Spraying arm of dish washing machine

Abstract

The utility model relates to a dish-washing machine spraying arm which comprises a spraying arm body, two ends of the spraying arm are rotatably connected with extension arms, the extension arms are communicated with an inner cavity of the spraying arm body, spraying holes are formed in the extension arms, a hydraulic rotating mechanism is arranged in the spraying arm body, and the hydraulic rotating mechanism is used for driving the extension arms to rotate. According to the structure, the extension arm can rotate in the rotating process of the spraying arm body, so that the spraying range of water flow covers the four corner areas of the inner cavity of the dish washing machine, the water flow can clean tableware located in the four corner areas, and the cleaning effect is improved.

Description

Technical Field

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

[0002] At present, when washing dishes, the spray arm in most dishwashers rotates around the central axis of the spray arm mounting base, and the spray trajectory is circular. However, the cross-sectional shape of the inner cavity of existing dishwashers is usually square, so the four corners of the inner tank are farther away from the spray trajectory of the spray arm, so there will be cleaning dead corners at the four corners, resulting in the dishes at the four corners not being cleaned properly. Utility Model Content

[0003] The utility model provides a dishwasher spray arm, which solves the above problems existing in the use process of the prior art.

[0004] The technical solution of the utility model is implemented as follows: a dishwasher spray arm, including a spray arm body, both ends of the spray arm are rotatably connected with extension arms, the extension arm is communicated with the inner cavity of the spray arm body, a spray hole is opened on the extension arm, and a hydraulic rotation mechanism is arranged between the spray arm body and the extension arm.

[0005] The utility model is further configured as follows: the spray hole is eccentrically arranged compared to the rotation center of the extension arm.

[0006] The utility model is further configured as follows: the hydraulic rotating mechanism includes a rotating shaft and a paddle, the rotating shaft is fixedly arranged on the inner cavity of the extension arm and extends downward into the inner cavity of the spray arm body, and the paddle is arranged in the inner cavity of the spray arm body and fixedly arranged outside the rotating shaft.

[0007] The utility model is further configured as follows: a plurality of blades are provided and distributed on the outer side of the rotating shaft along the circumferential direction.

[0008] The utility model is further configured as follows: the paddle blade is an arc-shaped blade.

[0009] The utility model is further configured as follows: the cross section of the spray hole is gradually reduced from bottom to top.

[0010] The utility model is further configured as follows: a vertical rod is fixedly arranged in the inner cavity of the extension arm, and the vertical rod is arranged just below the spray hole and extends upward.

[0011] In summary, the beneficial effects of the present invention are:

[0012] 1. In this structure, the extension arm can also rotate during the rotation of the spray arm body, so that the spray range of the water flow covers the four corners of the inner cavity of the dishwasher, and the water flow can clean the tableware located in the four corners, thereby improving the cleaning effect.

[0013] 2. When water flows in the inner cavity of the spray arm body, the water flow can push the blade to rotate, thereby driving the extension arm to rotate.

[0014] 3. When the extension arm is against the inner wall of the dishwasher and cannot rotate temporarily, even if the blade cannot rotate, water can still flow into the extension arm and spray out from the spray holes on the extension arm.

[0015] 4. The shape of the spray hole and the vertical rod can speed up the flow of water out of the spray hole, so that the water flow can impact the surface of the tableware with force, improving the cleaning effect.

[0016] 5. The arc-shaped blades can make the extension arm rotate in a certain direction, which is helpful to control the direction of water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a top view of the utility model;

[0020] Figure 3 for Figure 2 Schematic diagram of the cross-section structure in the AA direction;

[0021] Figure 4 for Figure 3 A local enlarged schematic diagram of the middle A;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the extension arm in the utility model.

[0023] Reference numerals in the figure: 1 spray arm body, 2 extension arm, 21 spray hole, 22 rotating shaft, 23 paddle, 24 upright pole. DETAILED DESCRIPTION

[0024] The following will be combined with the attached embodiment of the utility model Figure 1-5, clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example:

[0026] like Figures 1 to 5 As shown, the utility model discloses a dishwasher spray arm, comprising a spray arm body (1), both ends of the spray arm body 1 are rotatably connected to extension arms (2), and the inner cavity of the extension arm (2) is communicated with the inner cavity of the spray arm body 1, and at the same time, a spray hole (21) is eccentrically opened on the extension arm (2).

[0027] A hydraulic rotating mechanism is arranged between the spray arm body 1 and the extension arm (2), and the hydraulic rotating mechanism specifically comprises a rotating shaft (22) and a paddle (23), wherein the rotating shaft (22) is fixedly arranged on the inner cavity of the extension arm (2) and extends downward into the inner cavity of the spray arm body 1, and a plurality of paddles (23) are arranged and are located in the inner cavity of the spray arm body (1). In this structure, the paddles (23) are fixedly connected to the outer side wall of the rotating shaft (22) along the circumferential direction, and the paddles (23) are arc-shaped.

[0028] The working principle of the above structure is as follows: when water flows into the spray arm body (1), the water flows toward the two ends of the spray arm body (1), and at this time, the paddle (23) drives the rotating shaft (22) to rotate under the impetus of the water flow, thereby causing the extension arm (2) to rotate. While the extension arm (2) rotates, the water flows out from the spray hole (21) on the extension arm (2), and at this time, the water flows can continue to form a circular trajectory on both sides of the spray arm body (1), so that the cleaning range of the spray arm body (1) can be further expanded to cover the four corners of the dishwasher. Since the paddle (23) only drives the extension arm (2) to rotate with the help of the water flow and does not block the water flow, even if the extension arm (2) is in contact with the inner wall of the dishwasher during the process of following the movement of the spray arm body (1), so that the extension arm (2) can only rotate within a small range, this phenomenon will not cause the paddle (23) to prevent the water from flowing out from the spray hole (21) on the extension arm (2).

[0029] In order to further increase the impact force of the water flow on the tableware, the cross-section of the spray hole (21) is gradually reduced from bottom to top, and a vertical rod (24) is fixedly arranged in the inner cavity of the extension arm (2). The vertical rod (24) is arranged directly below the spray hole (21) and extends upward. This structure is mainly used to reduce the flow area of ​​the water flow near the spray hole (21). Under the condition of constant water pressure, the reduction of the flow area is conducive to increasing the flow speed of the water flow.

[0030] It should also be pointed out that the terms used in the present invention, such as "front", "rear", "vertical", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dishwasher spray arm, comprising a spray arm body (1), characterized in that: Both ends of the spray arm are rotatably connected to an extension arm (2), the extension arm (2) is communicated with the inner cavity of the spray arm body (1), a spray hole (21) is provided on the extension arm (2), a hydraulic rotation mechanism is provided in the spray arm body (1), the hydraulic rotation mechanism is used to drive the extension arm (2) to rotate, the spray hole (21) is eccentrically arranged relative to the rotation center of the extension arm (2), the hydraulic rotation mechanism comprises a rotating shaft (22) and a paddle (23), the rotating shaft (22) is fixedly arranged on the inner cavity of the extension arm (2) and extends downward into the inner cavity of the spray arm body (1), the paddle (23) is arranged in the inner cavity of the spray arm body (1) and is fixedly connected to the outer wall of the rotating shaft (22).

2. A dishwasher spray arm according to claim 1, characterized in that: A plurality of the paddles (23) are provided and distributed along the circumferential direction on the outside of the rotating shaft (22).

3. A dishwasher spray arm according to claim 2, characterized in that: The paddle blade (23) is an arc-shaped blade.

4. A dishwasher spray arm according to claim 1, characterized in that: The cross section of the spray hole (21) is gradually reduced from bottom to top.

5. A dishwasher spray arm according to claim 1, characterized in that: A vertical rod (24) is fixedly arranged in the inner cavity of the extension arm (2); the vertical rod (24) is arranged directly below the spray hole (21) and extends upwards.

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