Spraying arm mechanism for dish washing machine

Abstract

The utility model relates to the technical field of dish washing machines, in particular to a spraying arm mechanism for a dish washing machine, the spraying arm mechanism for the dish washing machine comprises a main spraying arm, the main spraying arm is rotatably connected to the bottom of an inner container, and an auxiliary spraying assembly and at least one spraying assembly are rotatably connected to the main spraying arm; the auxiliary spraying assembly comprises two auxiliary spraying arms, each auxiliary spraying arm is provided with a plurality of first spraying holes, the main spraying arm is provided with at least one first water spraying hole, the spraying assembly is arranged above the first water spraying holes, the spraying assembly is provided with a spraying part, and water of the first water spraying holes flows out of the spraying part; the two auxiliary spraying arms are arranged at the two ends of the main spraying arm correspondingly, and the spraying assembly is arranged between the two auxiliary spraying arms.

Description

Technical Field

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

[0002] With the development of society and the advancement of technology, people's requirements for life are getting higher and higher. More and more families have begun to use dishwashers to wash kitchen utensils, reducing people's housework burden. The working principle of a dishwasher is generally to add water to the inner tank of the machine, heat it, add detergent, and then use the washing pump to pump water into the spray pipe for washing. After washing, the water is discharged through the drainage pump.

[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 first 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 first water spray hole of the middle spray arm is also set downward to wash the tableware in the upper bowl basket.

[0004] The Chinese patent No. 202321631269.0 discloses a lower spray arm assembly for a dishwasher, including: a lower spray arm body, which is arranged in the dishwasher, and the lower spray arm body includes a water diverter valve, a rotating member and a spray arm, the rotating member is connected between the water diverter valve and the spray arm, the water diverter valve supplies water to the spray arm, and the spray arm is rotated and sprayed by the rotating member, and the water diverter valve, the rotating member and the spray arm are arranged, and the rotating member is installed between the water diverter valve and the spray arm, the water diverter valve supplies water to the spray arm, and controls the spray arm to rotate and spray water through the reverse thrust of the water and the rotating member, and after the water diverter valve is closed, the spray arm stops spraying water and stops rotating at the same time. The spray arm in the above patent is in the shape of a "one", and the spray range of the tableware in the bowl basket is limited, which affects its cleaning effect. Utility Model Content

[0005] In view of the deficiencies and problems in the prior art, the present invention provides a spray arm mechanism for a dishwasher, which has a wide spray range and good cleaning effect.

[0006] The technical solution adopted by the present disclosure to solve the above technical problems is: a spray arm mechanism for a dishwasher, including a main spray arm, the main spray arm is rotatably connected to the bottom of an inner tank, an auxiliary spray assembly and at least one injection assembly are rotatably connected to the main spray arm, the auxiliary spray assembly includes two auxiliary spray arms, the auxiliary spray arms are provided with a plurality of first spray holes, the main spray arm is provided with at least one first water spray hole, the injection assembly is provided above the first water spray hole, the injection assembly is provided with a injection part, and water from the first water spray hole flows out from the injection part.

[0007] As a preferred embodiment, two auxiliary spray arms are respectively arranged at two ends of the main spray arm, and the spray assembly is arranged between the two auxiliary spray arms.

[0008] As a preferred embodiment, the injection assembly is an impeller, the impeller is provided with a plurality of first blades, and the injection portion is a hollow structure formed between the first blades.

[0009] As a preferred embodiment, the first blade is provided with a concave, and the first water spray hole is arranged on the movement path of the concave.

[0010] As a preferred embodiment, the first blade is inclined, the side of the impeller close to the main spray arm is the first side, the side away from the main spray arm is the second side, the opening recessed on the first side is the first opening, the opening recessed on the second side is the second opening, and the first opening is larger than the second opening.

[0011] As a preferred embodiment, the first water spray hole includes a first spray hole and a second spray hole, the opening angle of the first spray hole is different from the opening angle of the second spray hole, and each impeller corresponds to a first spray hole and a second spray hole.

[0012] As a preferred embodiment, a first mounting hole and a connecting piece are provided between the first spray hole and the second spray hole, the spray assembly is provided with a second mounting hole, the connecting piece passes through the second mounting hole and the first mounting hole in sequence, and the impeller is installed on the main spray arm.

[0013] As a preferred embodiment, the auxiliary spray arm is provided with three second blades, the first spray holes are provided on the second blades, at least one first spray hole is provided on each second blade, and the opening directions of each first spray hole are different.

[0014] As a preferred embodiment, the main spray arm includes an upper shell and a lower shell that are detachably connected, the injection assembly and the auxiliary spray arm are arranged on the upper shell, and a water inlet channel is formed after the lower shell and the upper shell are connected. The water inlet channel is connected to the first water spray hole, and two through holes are arranged on the upper shell, and the two through holes are respectively connected to the water inlet channel, and the auxiliary spray arm is connected to the through holes.

[0015] As a preferred embodiment, the lower shell is provided with at least two second water spray holes, and the second water spray holes are connected to the water inlet channel.

[0016] Compared with existing products, since the auxiliary spray assembly and at least one spray assembly are rotatably connected to the main spray arm, the auxiliary spray assembly includes two auxiliary spray arms, which expands the spray range of the original main spray arm; since the main spray arm is rotatably connected to the bottom of the inner tank, and the spray assembly and the auxiliary spray arm are rotatably connected to the main spray arm, during the cleaning process, the main spray arm rotates to ensure that the tableware in the entire bowl basket is widely rinsed. On this basis, the spray assembly and the auxiliary spray arm rotate separately during the cleaning process, which further increases the rinsing range. At the same time, spraying and rotating at the same time can also increase the rinsing intensity of stains on the tableware, thereby achieving a better cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 is a schematic diagram of the structure of the spray arm mechanism disclosed in the present invention installed on a dishwasher;

[0019] Figure 2 This is one of the structural schematic diagrams of a spray arm mechanism for a dishwasher disclosed in the present invention;

[0020] Figure 3 This disclosure Figure 2 A partial enlarged view of the middle A;

[0021] Figure 4 This is the second structural schematic diagram of a spray arm mechanism for a dishwasher disclosed in the present invention;

[0022] Figure 5 This disclosure Figure 4 A partial enlarged view of point B in the middle;

[0023] Figure 6 is a schematic diagram of the structure of the injection assembly disclosed herein;

[0024] Figure 7 This is the third structural schematic diagram of a spray arm mechanism for a dishwasher disclosed in the present invention.

[0025] Description of reference numerals:

[0026] 1. Main spray arm; 2. Auxiliary spray arm; 3. Spray assembly; 4. First spray hole; 5. First blade; 6. Hollow structure; 7. Concave; 8. Connector; 9. First spray hole; 10. Second spray hole; 11. First mounting hole; 12. Second mounting hole; 13. Second spray hole. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] Please see Figure 1 As shown, a spray arm mechanism for a dishwasher comprises a main spray arm 1, which is rotatably connected to the bottom of an inner tank, and an auxiliary spray assembly and two spray assemblies 3 are rotatably connected to the main spray arm 1, and the auxiliary spray assembly comprises two auxiliary spray arms 2, and a plurality of first spray holes 4 are arranged on the auxiliary spray arm 2, and the main spray arm 1 is provided with at least one first water spray hole, and the spray assembly 3 is arranged above the first water spray hole, and a spray part is arranged on the spray assembly 3, and water from the first water spray hole flows out from the spray part. Specifically, the main spray arm 1 is in the shape of a "one", and the auxiliary spray assembly and the two spray assemblies 3 are arranged along the length direction of the main spray arm 1. The main spray arm 1 can rotate relative to the inner tank, and the auxiliary spray assembly and the two spray assemblies 3 can rotate relative to the main spray arm 1, so that it is more flexible when spraying, and the flushing range of the auxiliary spray assembly and the spray assembly 3 is greatly expanded. In addition, the auxiliary spray assembly and the spray assembly 3 rotate while spraying, which also makes the cleaning effect better and the decontamination ability stronger.

[0030] Please also see Figure 2As shown, further, two auxiliary spray arms 2 are respectively arranged at two ends of the main spray arm 1, and two spray assemblies 3 are arranged between the two auxiliary spray arms 2. The auxiliary spray arms 2 and the spray assemblies 3 are symmetrically arranged on the main spray arm 1. Since the main spray arm 1 not only has to withstand the gravity of the auxiliary spray arms 2, the spray assemblies 3 and water when working, but also has to withstand the force of the auxiliary spray arms 2 and the spray assemblies 3 when they rotate and the thrust of water and other forces, the auxiliary spray arms 2 and the spray assemblies 3 are symmetrically arranged on the main spray arm 1, which can make the force on the main spray arm 1 more balanced, so that the operation is more stable.

[0031] For further information, see Figure 2 and Figure 6 As shown, the spray assembly 3 is an impeller, and the impeller is provided with a plurality of first blades 5, and the spray portion is a hollow structure 6 formed between the first blades 5. Specifically, the first blade 5 is provided with a concave 7, and the first water spray hole is arranged on the movement path of the concave 7, so that the water sprayed from the first water spray hole can hit the first blade 5, causing the impeller to rotate, so that the impeller can spray the tableware while rotating. Preferably, the first blade 5 is arranged obliquely, the side of the impeller close to the main spray arm 1 is the first side, and the side away from the main spray arm 1 is the second side, the opening of the concave 7 on the first side is the first opening, and the opening of the concave 7 on the second side is the second opening, the first opening is larger than the second opening, so that the concave 7 is roughly truncated, and such an arrangement makes the first water spray hole located directly below the concave 7, so that part of the water from the first water spray hole hits the concave 7 to rotate the impeller, and part of the water is sprayed obliquely upward to wash the tableware in the bowl basket.

[0032] Please see Figures 4 to 6 As shown, in particular, the first water spray hole includes a first spray hole 9 and a second spray hole 10, the opening angle of the first spray hole 9 is different from the opening angle of the second spray hole 10, and each impeller corresponds to a first spray hole 9 and a second spray hole 10. Specifically, the impeller is disc-shaped, and the first spray hole 9 and the second spray hole 10 are arranged on the diameter of the circle and are symmetrical about the center of the circle. When the first water spray hole collides with the concave 7, the impeller will generate power. The first spray hole 9 and the second spray hole 10 are set to balance the force on the impeller and prevent the impeller from shaking when hit by water, thereby affecting normal spraying. The opening angle of the first spray hole 9 and the opening angle of the second spray hole 10 must match the concave 7. The directions of the concave 7 on both sides of the impeller diameter are different, and the opening angles of the first spray hole 9 and the second spray hole 10 are also different, so as to ensure that the first spray hole 9 and the second spray hole 10 are located on the movement path of the concave 7.

[0033] like Figure 5As shown, in one embodiment of the present disclosure, a first mounting hole 11 and a connecting member 8 are provided between the first spray hole 9 and the second spray hole 10, the injection assembly 3 is provided with a second mounting hole 12, and the connecting member 8 passes through the second mounting hole 12 and the first mounting hole 11 in sequence to install the impeller on the main spray arm 1. Specifically, the connecting member 8 is a bolt.

[0034] Please see Figure 2 and Figure 3 As shown, in one embodiment of the present disclosure, the auxiliary spray arm 2 is a three-pronged type, and the auxiliary spray arm 2 is provided with three second blades. The first spray hole 4 is provided on the second blade, and at least one first spray hole 4 is provided on each second blade. The opening direction of each first spray hole 4 is different. This is to ensure that tableware in all directions in the bowl basket can be rinsed, thereby expanding the cleaning range.

[0035] like Figure 7 As shown, in one embodiment of the present disclosure, the main spray arm 1 includes a detachably connected upper shell and a lower shell (in a conventional connection mode), the spray assembly 3 and the auxiliary spray arm 2 are arranged on the upper shell, and a water inlet channel is formed after the lower shell and the upper shell are connected, and the water inlet channel is connected to the first water spray hole, and two through holes are arranged on the upper shell, and the two through holes are respectively connected to the water inlet channel, and the auxiliary spray arm 2 is connected to the through holes, and the water in the water inlet channel is drawn out from the water cup under the action of the washing pump, and the water enters the water inlet channel and then enters the through hole and the first water spray hole respectively, and the water enters the auxiliary spray arm 2 through the through hole and is sprayed from the first spray hole 4, and the water enters the spray assembly 3 through the first water spray hole and is sprayed from the spray part. The two ends of the lower shell are respectively provided with second water spray holes 13, and the second water spray hole 13 is connected to the water inlet channel, and the opening of the second water spray hole 13 faces downward, and the water in the water inlet channel is sprayed from the second water spray hole 13 and sprayed to the bottom of the inner tank, so that the main spray arm 1 generates power rotation.

[0036] 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 for a dishwasher, characterized in that: The invention comprises a main spray arm (1), wherein the main spray arm (1) is rotatably connected to the bottom of an inner container, and an auxiliary spray assembly and at least one spray assembly (3) are rotatably connected to the main spray arm (1), wherein the auxiliary spray assembly comprises two auxiliary spray arms (2), wherein the auxiliary spray arms (2) are provided with a plurality of first spray holes (4), wherein the main spray arm (1) is provided with at least one first water spray hole, wherein the spray assembly (3) is provided above the first water spray hole, and wherein a spray portion is provided on the spray assembly (3), and water from the first water spray hole flows out from the spray portion.

2. The spray arm mechanism for a dishwasher according to claim 1, characterized in that: The two auxiliary spray arms (2) are respectively arranged at the two ends of the main spray arm (1), and the spray assembly (3) is arranged between the two auxiliary spray arms (2).

3. The spray arm mechanism for a dishwasher according to claim 1, characterized in that: The injection assembly (3) is an impeller, the impeller is provided with a plurality of first blades (5), and the injection portion is a hollow structure (6) formed between the first blades (5).

4. The spray arm mechanism for a dishwasher according to claim 3, characterized in that: The first blade (5) is provided with an inner recess (7), and the first water spray hole is arranged on the movement path of the inner recess (7).

5. The spray arm mechanism for a dishwasher according to claim 4, characterized in that: The first blade (5) is arranged obliquely, the side of the impeller close to the main spray arm (1) is the first side, the side away from the main spray arm (1) is the second side, the opening of the recess (7) on the first side is the first opening, the opening of the recess (7) on the second side is the second opening, and the first opening is larger than the second opening.

6. The spray arm mechanism for a dishwasher according to claim 3, characterized in that: The first water spray hole comprises a first spray hole (9) and a second spray hole (10); the opening angle of the first spray hole (9) and the opening angle of the second spray hole (10) are different; each impeller corresponds to a first spray hole (9) and a second spray hole (10).

7. The spray arm mechanism for a dishwasher according to claim 6, characterized in that: A first mounting hole (11) and a connecting piece (8) are provided between the first spray hole (9) and the second spray hole (10), the spray assembly (3) is provided with a second mounting hole (12), the connecting piece (8) passes through the second mounting hole (12) and the first mounting hole (11) in sequence, and the impeller is installed on the main spray arm (1).

8. The spray arm mechanism for a dishwasher according to claim 1, characterized in that: The auxiliary spray arm (2) is provided with three second blades, the first spray holes (4) are provided on the second blades, at least one first spray hole (4) is provided on each second blade, and the opening directions of each first spray hole (4) are different.

9. The spray arm mechanism for a dishwasher according to claim 1, characterized in that: The main spray arm (1) comprises an upper shell and a lower shell that are detachably connected, the spray assembly (3) and the auxiliary spray arm (2) are arranged on the upper shell, and a water inlet channel is formed after the lower shell and the upper shell are connected, and the water inlet channel is connected to the first water spray hole, and two through holes are arranged on the upper shell, and the two through holes are respectively connected to the water inlet channel, and the auxiliary spray arm (2) is connected to the through holes.

10. The spray arm mechanism for a dishwasher according to claim 9, characterized in that: The lower shell is provided with at least two second water spray holes (13), and the second water spray holes (13) are communicated with the water inlet channel.

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