Spraying arm mechanism and dish washing machine

Abstract

The utility model discloses a gushing arm mechanism which comprises a gushing arm and a water retaining piece, the gushing arm is provided with a hollow inner cavity, the gushing arm is provided with a water inlet communicated with the hollow inner cavity and a plurality of spraying holes, the water retaining piece is rotatably connected with the gushing arm, the spraying holes are located below the water retaining piece, and when the spraying holes spray water, the gushing arm is provided with a water inlet communicated with the hollow inner cavity. And the water flow impacts the water retaining piece, so that the water retaining piece rotates. According to the spraying arm mechanism, the rotatable water retaining piece is arranged on the spraying arm, water flow sprayed out of the spraying holes impacts the water retaining piece, the water retaining piece rotates relative to the spraying arm and scatters the water flow, the water flow is sprayed farther, the spraying range is larger, and therefore the cleaning effect of the dish washing machine is improved, and all-directional cleaning is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, and in particular to a spray arm mechanism 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 also used by more and more families. They can reduce the labor intensity of users, improve work efficiency, enhance cleanliness and hygiene, and meet the user's comfortable life experience. For dishwashers, the spray arm mechanism is its core component, which directly affects the cleaning efficiency and cleaning effect of water washing tableware.

[0003] Conventional dishwashers achieve cleaning by setting a number of water outlet holes on the spray arm, and washing water flows in from the water inlet of the spray arm, sprays out through the water outlet holes, and sprays onto the tableware. In general, in order to increase the spray range of the spray arm, the spray arm is rotated in the inner tank. For example, the publication number CN1113491492A discloses a spray arm assembly, including a spray arm and a spray arm seat, the spray arm seat has a through channel, the water inlet pipe of the spray arm is inserted into the channel and rotated, the channel has a plurality of hooks extending upward, the outer wall of the water inlet pipe is provided with an annular boss, and the annular boss is limited by the hook, the power of the spray arm comes from the water entering from the water inlet pipe, spraying through the nozzle on the spray arm, and the rotation of the spray arm is controlled by the spray direction during the spraying process. The spray arm has the advantage of easy installation, but the water outlet hole of this spray arm is directly on the outside of the spray arm, and the washing water is directly sprayed from the water outlet hole onto the tableware, resulting in a small spray range of the water outlet hole and a general cleaning effect. Therefore, a cleaning spray arm mechanism and a dishwasher are provided to solve the problem that the spray arm mechanism of the existing dishwasher has a small spray range and a general cleaning effect. Utility Model Content

[0004] One of the purposes of the utility model is to provide a spray arm mechanism and a dishwasher, so as to solve the problem that the spray arm mechanism of the existing dishwasher has a small spray range and a general cleaning effect.

[0005] The spray arm mechanism and dishwasher of the utility model can be realized by the following technical solutions:

[0006] A spray arm mechanism comprises a spray arm and a water retaining member, wherein the spray arm has a hollow inner cavity, the spray arm is provided with a water inlet connected to the hollow inner cavity, and a plurality of spray holes, the water retaining member is rotatably connected to the spray arm, the spray holes are located below the water retaining member, and when water is sprayed out of the spray holes, the water flow impacts the water retaining member, causing the water retaining member to rotate.

[0007] In one embodiment, the water retaining member is provided with a plurality of blades, the blades are opposite to the spray holes, and the water sprayed from the spray holes is sprayed onto the blades.

[0008] In one embodiment, the blade is provided with an arc segment, and the arc segment corresponds to the position of the injection hole.

[0009] In one embodiment, the injection hole is provided with a guide wall, and the guide wall is in an oblique shape.

[0010] In one embodiment, the guide wall is perpendicular to the surface of the spray arm.

[0011] In one embodiment, a plurality of the blades are arranged in a ring along the axis of the water retaining member, the water retaining member is provided with an annular reinforcement rib, and one end of the blade is connected to the annular reinforcement rib.

[0012] In one embodiment, a support seat is provided on the spray arm, and the water retaining member is rotatably connected to the support seat.

[0013] In one embodiment, a fixing member is further included, wherein the water retaining member is sleeved on the outer wall of the support seat, and one end of the fixing member is inserted into the support seat.

[0014] In one embodiment, the fixing member is provided with a connecting portion and a limiting portion, the connecting portion is provided with a thread and is connected to the inner wall of the support seat via the thread, and the limiting portion has a size larger than an inner diameter of the through hole.

[0015] The utility model also provides a dishwasher, comprising an inner container and the above-mentioned spray arm mechanism, wherein the spray arm mechanism is arranged inside the inner container.

[0016] Compared with the prior art, the cleaning spray arm mechanism and dishwasher of the utility model have the following beneficial effects:

[0017] The spray arm mechanism of the utility model is provided with a rotatable water retaining member on the spray arm, and the water flow sprayed from the spray hole impacts the water retaining member, and the water retaining member rotates relative to the spray arm to break up and reflect the water flow, so that the water flow is sprayed farther and the spray range is larger, thereby improving the cleaning effect of the dishwasher and realizing all-round cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 This is a first structural schematic diagram of a spray arm mechanism of the utility model;

[0020] Figure 2 yes Figure 1 The exploded structure diagram of the spray arm mechanism of the utility model is shown;

[0021] Figure 3 yes Figure 1 A schematic diagram of a part A of the spray arm mechanism of the utility model is shown;

[0022] Figure 4 yes Figure 1 A cross-sectional view of the spray arm mechanism of the utility model is shown;

[0023] Figure 5 yes Figure 4 A partial schematic diagram B of the spray arm mechanism of the utility model is shown;

[0024] Figure 6 This is a second structural schematic diagram of a spray arm mechanism of the utility model;

[0025] Figure 7 yes Figure 6 A cross-sectional view of the spray arm mechanism of the utility model is shown;

[0026] Figure 8 yes Figure 7 A partial C schematic diagram of the spray arm mechanism of the utility model shown;

[0027] Fig. 9 The utility model is a structural schematic diagram of a dishwasher.

[0028] Indications in the figure: 10, inner tank; 20, spray arm mechanism; 210, spray arm; 211, water inlet; 212, spray hole; 2121, guide wall; 213, support seat; 214, hollow inner cavity; 215, upper cover; 216, lower cover; 217, water inlet pipe; 220, water retaining member; 221, blade; 2211, arc segment; 2212, annular reinforcement rib; 2213, straight segment; 222, through hole; 230, fixing member; 231, connecting portion; 232, limiting portion. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] See also Figure 1-9 The present embodiment discloses a spray arm mechanism 20, including a spray arm 210 and a water retaining member 220. The spray arm 210 has a hollow inner cavity 214. The spray arm 210 is provided with a water inlet 211 connected to the hollow inner cavity 214, and a plurality of spray holes 212. Washing water enters the hollow inner cavity 214 of the spray arm 210 from the water inlet 211, and is sprayed from the spray holes 212 to wash the dishes. The water retaining member 220 is rotatably connected to the spray arm 210. The spray holes 212 are located below the water retaining member 220. When the spray holes 212 spray water, the water flow impacts the water retaining member 220, and the water flow generates thrust to rotate the water retaining member 220. The rotation of the water retaining member 220 scatters and reflects the water flow, so that the water flow is sprayed farther, which can increase the spray range, thereby improving the cleaning effect of the dishwasher and achieving all-round cleaning.

[0032] For further information, see Figure 1-8 The water retaining member 220 is provided with a plurality of blades 221, and the blades 221 are opposite to the injection hole 212. The water sprayed from the injection hole 212 is sprayed onto the blades 221, generating a driving force on the blades 221, thereby causing the water retaining member 220 to rotate relative to the spray arm 210. During the rotation, the blades 221 break up the water flow and reflect it upward, thereby increasing the spraying range of the water flow.

[0033] For further information, see Figure 2 , 4 , 5 and Figure 8, the spray arm 210 is provided with a support seat 213, and the water retaining member 220 is rotatably connected to the support seat 213. There are various ways to realize the rotatable connection between the water retaining member 220 and the support seat 213, and a snap-on structure can be adopted, or the water retaining member 220 can be directly sleeved on the support seat 213. For example, a plurality of protrusions are provided on the inner wall of the support seat 213, and a step surface matching the protrusions is provided on the water retaining member 220. One end of the water retaining member 220 is inserted into the support seat 213 so that the protrusions are engaged on the step surface. When the water retaining member 220 rotates, the protrusions can slide relative to the step surface. In this embodiment, a through hole 222 is provided in the middle of the water retaining member 220, and the support seat 213 is set to a cylindrical shape with a hollow inner wall. The water retaining member 220 is directly sleeved on the outer wall of the support seat 213 through the through hole 222, so that the water retaining member 220 can rotate relative to the support seat 213.

[0034] For further information, see Figure 3 , 5 , 6 and Figure 8 The spray arm mechanism 20 of this embodiment further includes a fixing member 230. When the water retaining member 220 is sleeved on the support seat 213, one end of the fixing member 230 is inserted into the support seat 213 to limit and fix the water retaining member 220 to prevent the water retaining member 220 from being separated from the support seat 213 due to excessive centrifugal force during the rotation process when the water flow impact is too large. Specifically, the fixing member 230 is provided with a connecting portion 231 and a limiting portion 232. The connecting portion 231 is provided with a thread 2311. The inner wall of the support seat 213 may also be provided with a thread. The fixing member 230 is detachably connected to the inner wall of the support seat 213 through the thread 2311. The limiting portion 232 is located at one end of the fixing member 230. The size of the limiting portion 232 is larger than the inner diameter of the through hole 222, so that the water retaining member 220 can be limited on the support seat 213 to prevent the water retaining member 220 from being separated from the fixing member 230 during the rotation process.

[0035] For further information, see Figure 3 , 5 and Figure 8, the blade 221 is provided with an arc segment 2211, and the arc segment 2211 corresponds to the position of the injection hole 212. The arc segment 2211 can be arranged in the middle or one end of the blade 221. When the arc segment 2211 is arranged in the middle of the blade 221, straight segments 2213 are arranged at both ends of the blade 221, and the straight segments 2213 are connected to the arc segment 2211; when the arc segment 2211 is arranged at one end of the blade 221, the other end of the blade 221 is provided with a straight segment 2213, and the straight segment 2211 is connected to the extension of the through hole 222. In a specific implementation, a chamfer is arranged at the connection between the two to reduce the resistance of the blade 221 during the rotation of the water retaining member 220. In this embodiment, by the arc segment 2211 corresponding to the injection hole 212 , the water flow injected from the injection hole 212 can more directly impact the blade 221 , thereby generating a greater impact force, which is more conducive to the rotation of the water retaining member 220 .

[0036] The injection hole 212 is provided with a guide wall 2121, and the guide wall 2121 is in an oblique shape. The guide wall 2121 has a guiding function, which can make the impact force of the water flow sprayed from the injection hole 212 greater. The guide wall 212 is set in an oblique shape, and the water flow spray angle can be adjusted so that the sprayed water flow faces the blade 221. The guide wall 2121 is perpendicular to the surface of the spray arm 210. In this embodiment, the guide wall 2121 can also be set to be perpendicular to the inner wall of the spray arm 210.

[0037] For further information, see Figure 6-8 The water retaining member 220 is configured to be circular, and a plurality of the blades 221 are arranged in a ring along the axis of the water retaining member 220. The water retaining member 220 is provided with an annular reinforcement rib 2212, and one end of the blade 221 is connected to the annular reinforcement rib 2212, so as to improve the stability of the blade 221 in the water retaining member 220 and prevent the blade 221 from rotating and deforming when the water flow impact is too large.

[0038] The utility model further provides a dishwasher, comprising the above-mentioned spray arm mechanism 20, wherein the spray arm mechanism 20 is arranged inside the inner container 10. In this embodiment, the spray arm mechanism 20 can be installed at different positions of the inner container 10.

[0039] See also Figure 1 and Fig. 9The first spray arm mechanism of this embodiment can be set as the middle spray arm of the dishwasher, installed on the upper part or side wall of the inner tank 10 of the dishwasher, and the spray arm 210 is composed of an upper cover 215 and a lower cover 216, and the upper cover 215 and the lower cover 216 enclose the hollow inner cavity 214. The water inlet 211 is set on the upper cover 215, and a plurality of spray holes 212 are opened on the upper cover 215. The upper cover 215 is provided with a support seat 213, and the water retaining member 220 is rotatably installed on the support seat 213.

[0040] See also Figure 6-9 The second spray arm mechanism of this embodiment is installed at the bottom of the inner tank 10 of the dishwasher, and is directly connected to the water circuit of the dishwasher. It can spray washing water upward from the inner tank 10 to wash the dishes. The spray arm 210 is composed of an upper cover 215 and a lower cover 216. The upper cover 215 and the lower cover 216 enclose the hollow inner cavity 214. The water inlet 211 is arranged on the lower cover 216. The water inlet 211 is connected to the water inlet pipe 217. The water inlet pipe 217 is provided with a snap-fit ​​part, which is clamped at the bottom of the inner tank 10 and communicated with the water circuit of the dishwasher. The upper cover 215 is provided with a plurality of spray holes 212, and the water stopper 220 is rotatably installed on the upper cover 215.

[0041] 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.

[0042] 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 mechanism, characterized in that: It includes a spray arm and a water retaining member; the spray arm has a hollow inner cavity, the spray arm is provided with a water inlet connected to the hollow inner cavity, and a plurality of spray holes; the water retaining member is rotatably connected to the spray arm, the spray holes are located below the water retaining member, and when the spray holes spray water, the water flow impacts the water retaining member, causing the water retaining member to rotate.

2. A spray arm mechanism according to claim 1, characterized in that: The water retaining member is provided with a plurality of blades, the blades are opposite to the spray holes, and the water sprayed from the spray holes is sprayed onto the blades.

3. A spray arm mechanism according to claim 2, characterized in that: The blade is provided with an arc segment, and the arc segment corresponds to the position of the injection hole.

4. A spray arm mechanism according to any one of claims 1 to 3, characterized in that: The injection hole is provided with a guide wall, and the guide wall is in an oblique shape.

5. A spray arm mechanism according to claim 4, characterized in that: The guide wall is perpendicular to the surface of the spray arm.

6. A spray arm mechanism according to claim 2, characterized in that: A plurality of blades are arranged in a ring along the axis of the water retaining member, the water retaining member is provided with a ring-shaped reinforcing rib, and one end of the blade is connected to the ring-shaped reinforcing rib.

7. A spray arm mechanism according to claim 1, characterized in that: A support seat is provided on the spray arm, and the water retaining member is rotatably connected to the support seat.

8. A spray arm mechanism according to claim 7, characterized in that: It also includes a fixing piece, a through hole is provided in the middle of the water blocking piece, which is sleeved on the outer wall of the support seat, and one end of the fixing piece is inserted into the support seat.

9. A spray arm mechanism according to claim 8, characterized in that: The fixing member is provided with a connecting portion and a limiting portion, the connecting portion is provided with a thread and is connected to the inner wall of the support seat via the thread, and the limiting portion has a size larger than the inner diameter of the through hole.

10. A dishwasher, characterized in that: It comprises an inner shell and a spray arm mechanism as described in any one of claims 1 to 9, wherein the spray arm mechanism is arranged inside the inner shell.

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