Spraying arm and dish washing machine

Abstract

The utility model discloses a gushing arm which is installed at the corner of an inner container of a dish washing machine, the gushing arm is provided with at least three branch gushing arms which are communicated with one another, each branch gushing arm is provided with a spraying hole, the gushing arm comprises an upper cover and a lower cover, the spraying holes are formed in the upper cover, the lower cover is provided with a rotating shaft, and the rotating shaft is connected with the spraying arm. The rotating shaft is rotatably connected with the inner container, the interior of the rotating shaft is hollow to form a water inlet, the upper cover and the lower cover are closed to form a hollow flow channel, the flow channel is communicated with the water inlet, and the spraying holes are communicated with the flow channel.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, and in particular to a spray arm and a dishwasher. Background Art

[0002] Dishwashers are automated devices that automatically clean bowls, chopsticks, plates, dishes and other tableware. As people's living standards improve, dishwashers are used by more and more families. They can reduce the labor intensity of users, improve work efficiency, enhance cleanliness and hygiene, and satisfy users' comfortable living experience. For dishwashers, the spray arm is its core component, which directly affects the cleaning efficiency and cleaning effect of water washing tableware.

[0003] The spray arm of the existing dishwasher is installed in the middle of the inner tank, especially the lower spray arm, which is generally installed in the middle of the bottom of the inner tank, so as to spray cleaning liquid all around to clean the tableware. For example, the dishwasher disclosed in CN201510227820.9 adopts a spray arm installed in the middle of the bottom of the inner tank, and the spray arm can expand the spray range by rotating to form a circular cleaning area. The inner tank is generally a box-type design, and most bowl baskets are square. The bowl basket is installed in the inner tank through a guide rail, and the lower spray arm is located below the bowl basket. When washing, the tableware near the middle of the inner tank is within the spray range of the spray arm, and the cleaning effect is better. However, the tableware in the corner of the bowl basket is located near the corner of the inner tank, and the spray arm is prone to cleaning dead corners during the spray cleaning process, which leads to poor cleaning effect of the tableware located in the corner. Utility Model Content

[0004] One of the purposes of the utility model is to provide a spray arm and a dishwasher, so as to solve the problem that the existing dishwashers are prone to have cleaning dead corners.

[0005] The utility model can realize a spray arm mechanism through the following technical solutions:

[0006] A spray arm is installed at a corner of an inner tank of a dishwasher, the spray arm is provided with at least three branch spray arms which are interconnected, each branch spray arm is provided with a spray hole, the spray arm comprises an upper cover and a lower cover, the spray hole is opened in the upper cover, the lower cover is provided with a rotating shaft, the rotating shaft is rotatably connected to the inner tank, the interior of the rotating shaft is hollow to form a water inlet, the upper cover and the lower cover are covered to form a hollow flow channel, the flow channel is connected to the water inlet, and the spray hole is connected to the flow channel.

[0007] In one embodiment, a first guide wall is provided on the outer periphery of the injection hole, and the first guide wall is provided on the inner surface of the upper cover.

[0008] In one embodiment, a second guide wall is provided on the outer periphery of the injection hole, and the second guide wall is provided on the outer surface of the upper cover.

[0009] In one embodiment, the second guide wall is in an oblique shape, and a groove is provided on the outer surface of the upper cover, and the groove is connected to the lowest point of the second guide wall.

[0010] In one embodiment, the upper cover is provided with an upper guide groove, and the lower cover is provided with a lower guide groove and a reinforcing rib. The upper guide groove and the lower guide groove are combined to form the flow channel. The reinforcing rib is located on one side of the lower guide groove. When the upper cover and the lower cover are combined, the reinforcing rib is buckled with the upper cover.

[0011] In one embodiment, the spray arm further comprises an outer shell, which is detachably mounted on the top of the upper cover and is located at the intersection of the branch spray arms.

[0012] In one embodiment, the outer shell is provided with a plurality of claws, the side wall of the upper cover is provided with a plurality of slots, and the claws are locked in the slots.

[0013] The utility model provides a dishwasher, comprising the spray arm and the base described above, wherein the base is provided with a water inlet pipe, the water inlet pipe is connected to a washing pump, the base is arranged at the bottom of the inner tank, the rotating shaft is rotatably connected to the base, and the water inlet is communicated with the water inlet pipe.

[0014] In one embodiment, the base includes a clamping ring and a base body, the clamping ring is provided with a limiting plate, the clamping ring is clamped on the top of the base body through the limiting plate, the base body is provided with a hollow inner cavity, the hollow inner cavity is connected with the water inlet pipe, the rotating shaft is provided with a buckle part, when the rotating shaft is inserted into the hollow inner cavity, the buckle part abuts against the limiting plate, so that the rotating shaft and the base body are rotatably connected.

[0015] In one embodiment, the base body is provided with a limiting boss, and the bottom end of the rotating shaft abuts against the boss.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a spray arm with multiple branch spray arms, each branch spray arm is provided with a spray hole, connected to the bottom of the inner tank through a rotating shaft, water sprayed from the spray hole provides driving force for the spray arm, so that the spray arm rotates to form a plurality of water flows to wash the dishes alternately, and when installed at the bottom of the inner tank of the dishwasher, the washing effect of the dishes located in the corner can be improved. The spray arm and the inner tank are installed on a base with a water inlet pipe, which has a simple structure and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the utility model in which the spray arm is installed in the inner tank of a dishwasher;

[0019] Figure 2 yes Figure 1 A cross-sectional view of the spray arm shown installed in the inner tank of a dishwasher;

[0020] Figure 3 yes Figure 2 The spray arm shown is installed in the cross-sectional view of the dishwasher tank, section A is enlarged schematic diagram;

[0021] Figure 4 yes Figure 1 An exploded schematic diagram of the spray arm and the mounting structure in the dishwasher, including the spray arm;

[0022] Figure 5 It is a cross-sectional view of the spray arm of the utility model;

[0023] Figure 6 It is an exploded schematic diagram of the spray arm of the utility model;

[0024] Figure 7 This is a schematic diagram of the upper cover of the spray arm of the utility model from the first perspective;

[0025] Figure 8 It is a schematic diagram of the second viewing angle of the spray arm upper cover of the utility model.

[0026] Markings in the figure: 1. liner; 2. spray arm; 21. branch spray arm; 211. spray hole; 212. intersection; 22. upper cover; 221. first guide wall; 222. second guide wall; 223. groove; 224. upper guide groove; 225. slot; 226. block; 23. lower cover; 231. shaft; 2311. water inlet; 2312. buckle; 232. lower guide groove; 233. reinforcing rib; 24. flow channel; 25. outer shell; 251. claw; 3. base; 31. water inlet pipe; 32. snap ring; 321. limit plate; 322. screw hole; 33. base body; 331. hollow inner cavity; 332. limit boss; 333. screw column; 34. gasket; 341. through hole; 35. screw. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-8 The utility model provides a spray arm 2, which is installed at two corners of the inner tank 1 of the dishwasher. The spray arm 2 is provided with at least three branch spray arms 21 that are interconnected. Each of the branch spray arms 21 is provided with a spray hole 211, and washing water is sprayed from the spray hole 211 to wash the dishes. The branch spray arms 21 can be provided in three or more numbers, and are not limited here. In the present embodiment, the branch spray arms 21 are provided in three numbers, and the angles between the three branch spray arms 21 are the same, and the spray hole 211 is provided at one end of the branch spray arm 21. Specifically, the spray arm 2 includes an upper cover 22 and a lower cover 23, the spray hole 221 is provided in the upper cover 22, and the lower cover 23 is provided with a rotating shaft 231, and the rotating shaft 231 is rotatably connected to the inner tank 1. The interior of the rotating shaft 231 is hollow to form a water inlet 2311, and the upper cover 22 and the lower cover 23 are covered to form a hollow flow channel 24. The flow channel 24 is connected to the water inlet 231, and the injection hole 21 is connected to the flow channel 24. The washing water flows into the flow channel 24 from the water inlet 2311 and is then injected from the injection hole 211. The water injected from the injection hole 211 can act as a driving force for the spray arm 2, so that the rotating shaft 231 rotates around the bottom of the inner tank 1. At this time, the washing water injected from the injection hole 211 can also wash the dishes alternately, thereby improving the washing effect of the dishes in the corners of the bowl basket.

[0030] See also Figure 6-8The outer periphery of the injection hole 211 is provided with a first guide wall 221, and the first guide wall 221 is provided on the inner surface of the upper cover 22. The first guide wall 221 has a guiding effect on the water flow, and can reduce the resistance of the washing water flowing from the flow channel 24 into the injection hole 211. In this embodiment, the outer periphery of the injection hole 211 is further provided with a stopper 226, and the position of the stopper 226 is opposite to the first guide wall 221. It can be understood that the stopper 226 is located on one side of the outer periphery of the injection hole 211, and the stopper 226 is located on the other side of the outer periphery of the injection hole 211, so that the water flow is more concentrated from the guide wall 221 to the injection hole 211, and the impact of the water flow when it is sprayed is improved.

[0031] The outer periphery of the injection hole 211 is also provided with a second guide wall 222, and the second guide wall 222 is provided on the outer surface of the upper cover 22. In this embodiment, the first guide wall 221 and the inner surface of the upper cover 22 are in an arc transition, and an arc transition is also provided between the first guide wall 221 and the second guide wall 222, so as to further reduce the obstruction force during the flow of washing water.

[0032] More specifically, the second guide wall 222 is in an oblique shape, and a groove 223 is provided on the outer surface of the upper cover 22, and the groove 223 is connected to the lowest point of the second guide wall 222. The oblique second guide wall 222 can adjust the spray angle of the washing water. In this embodiment, the spray arm 2 is provided with three spray holes 211, and the three guide walls 222 have different oblique directions, which can increase the spray range of the washing water and further improve the washing effect.

[0033] For further information, please refer to 5, 6 and Figure 8 The upper cover 22 is provided with an upper guide groove 224, and the lower cover 23 is provided with a lower guide groove 232 and a reinforcing rib 233. The upper guide groove 224 and the lower guide groove 232 are overlapped to form the flow channel 24. The reinforcing rib 233 is located on one side of the lower guide groove 232. When the upper cover 22 and the lower cover 23 are overlapped, the reinforcing rib 233 is buckled with the upper cover 22 to support the upper cover 22.

[0034] For further information, see Figure 6 and Figure 7 The spray arm 2 further includes an outer shell 25, which is detachably mounted on the top of the upper cover 22 and is located at the intersection 212 of the three branch spray arms 21. The outer shell 25 increases the weight of the entire spray arm 2, making the spray arm 2 more stable when rotating. Specifically, the outer shell 25 is provided with a plurality of claws 251, and the side wall of the upper cover 22 is provided with a plurality of slots 225, and the claws 251 are clamped in the slots 225, so that the outer shell 25 is installed on the top of the upper cover 22.

[0035] The utility model also provides a dishwasher, please refer to 1-5, the dishwasher includes the above-mentioned spray arm 2 and base 3, the base 3 is provided with a water inlet pipe 31, the water inlet pipe 31 is connected to the washing pump, the base 3 is arranged at the bottom of the inner tank 1, the rotating shaft 231 is rotatably connected to the base 3, and the water inlet 2311 is connected to the water inlet pipe 31, so that the spray arm 2 is rotatably installed at the bottom of the inner tank 1, and the washing water is transported to the water inlet pipe 31 by the washing pump, and flows into the flow channel 24 through the water inlet 2311.

[0036] Further, the base 3 includes a clamping ring 32 and a base body 33, the clamping ring 32 is provided with a limiting plate 321, and the clamping ring 32 is clamped at the top of the base body 33 through the limiting plate 321. In this embodiment, a through hole is provided in the middle of the clamping ring 32, and the limiting plate 321 extends along the inner wall of the through hole toward the bottom of the clamping ring 32 and is cylindrical, so that the limiting plate 321 can be directly clamped at the top of the base body 33. The base body 33 is provided with a hollow inner cavity 331, and the hollow inner cavity 331 is connected to the water inlet pipe 31. The rotating shaft 231 is provided with a snap portion 2312. When installing the spray arm 2 shown in this embodiment, the snap ring 32 is first clamped on the top of the base body 33, and then the rotating shaft 231 of the spray arm 2 is inserted into the hollow inner cavity 331 of the base body 33. At this time, the snap portion 2312 is abutted against the limiting plate 321, and the rotating shaft 231 is rotatably connected to the base body 33.

[0037] Furthermore, the base body 33 is provided with a limiting boss 332 , and when the rotating shaft 231 is inserted into the hollow inner cavity 331 , the bottom end of the rotating shaft 231 abuts against the limiting boss 332 , further limiting the rotating shaft 231 .

[0038] Please refer to Figure 3 and Figure 4 In order to make the spray arm 2 more stably installed at the bottom of the inner tank 1, the base body 33 is provided with a plurality of screw columns 333, the clamping ring 32 is provided with a plurality of screw holes 322, the screw holes 322 match the screw columns 333, and a gasket 34 is further provided between the clamping ring 32 and the base body 33, and the corresponding gasket 34 is provided with a through hole 431. The gasket 34 is installed on the base body 33, and then the clamping ring 32 is clamped on the base body 33, and the clamping ring 32 and the base body 33 are fixed together by screws 35 passing through the screw holes 322 and the screw columns 333, and then the rotating shaft 231 is clamped in the hollow inner cavity 331. The spray arm 2 of this embodiment is installed between the inner tank 1 by the base 3, which has a simple structure and is easy to install. When the spray arm 2 needs to be replaced and repaired, the spray arm 2 can be directly taken out.

[0039] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A spray arm installed at a corner of a dishwasher tank, characterized in that: The spray arm is provided with at least three branch spray arms interconnected with each other, each branch spray arm is provided with a spray hole; the spray arm comprises an upper cover and a lower cover, the spray hole is opened in the upper cover, the lower cover is provided with a rotating shaft, the rotating shaft is rotatably connected to the inner tank, the interior of the rotating shaft is hollow to form a water inlet, the upper cover and the lower cover are covered to form a hollow flow channel, the flow channel is connected with the water inlet, and the spray hole is connected with the flow channel.

2. A spray arm according to claim 1, characterized in that: A first flow guide wall is arranged on the outer periphery of the injection hole, and the first flow guide wall is arranged on the inner surface of the upper cover.

3. A spray arm according to claim 1, characterized in that: A second flow guide wall is disposed on the outer periphery of the injection hole, and the second flow guide wall is disposed on the outer surface of the upper cover.

4. A spray arm according to claim 3, characterized in that: The second guide wall is in an oblique shape, and a groove is provided on the outer surface of the upper cover, and the groove is connected to the lowest point of the guide wall.

5. A spray arm according to claim 1, characterized in that: The upper cover is provided with an upper guide groove, and the lower cover is provided with a lower guide groove and a reinforcing rib. The upper guide groove and the lower guide groove are covered to form the flow channel. The reinforcing rib is located on one side of the lower guide groove. When the upper cover and the lower cover are covered, the reinforcing rib is buckled with the upper cover.

6. A spray arm according to claim 1, characterized in that: The spray arm further comprises an outer shell, which is detachably mounted on the top of the upper cover and is located at the intersection of the branch spray arms.

7. A spray arm according to claim 6, characterized in that: The outer shell is provided with a plurality of claws, and the side of the upper cover is provided with a plurality of slots, and the claws are locked in the slots.

8. A dishwasher, comprising the spray arm according to any one of claims 1 to 7, and The base is characterized in that The base is provided with a water inlet pipe, the water inlet pipe is connected to the washing pump, the base is arranged at the bottom of the inner tank, the rotating shaft is rotatably connected to the base, and the water inlet is communicated with the water inlet pipe.

9. A dishwasher according to claim 8, characterized in that: The base includes a clamping ring and a base body, the clamping ring is provided with a limiting plate, and the clamping ring is clamped on the top of the base body through the limiting plate; the base body is provided with a hollow inner cavity, and the hollow inner cavity is connected with the water inlet pipe; the rotating shaft is provided with a buckle part, and when the rotating shaft is inserted into the hollow inner cavity, the buckle part abuts against the limiting plate, so that the rotating shaft and the base body are rotatably connected.

10. A dishwasher according to claim 9, characterized in that: The base body is provided with a limiting boss, and the bottom end of the rotating shaft abuts against the boss.

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