A spray arm structure and a cleaning machine

Abstract

The utility model relates to cleaning equipment technical field, concretely relates to a spray arm structure and cleaning machine, including the intercommunication connecting pipeline and volute, in the first direction, the volute with the connecting pipeline set gradually, in the second direction perpendicular with the first direction, the volute includes the eddy zone and acceleration area of intercommunication in, the inside diameter of eddy zone is greater than the inside diameter of acceleration area, one side of volute is provided with the spout of the communication outside and acceleration area, the end part away from acceleration area of spout is provided with the flared end. In view of the deficiency existing in the prior art cleaning equipment, the utility model designs a spray arm structure with volute, the inner chamber of volute includes eddy zone, acceleration area and flared end, washing water can be supercharged when passing through volute, and after spraying, a larger cleaning area can be formed, thereby realizing better cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, specifically to a spray arm structure and a cleaning machine. Background Technology

[0002] In the field of kitchen equipment, cleaning equipment such as dishwashers and fruit and vegetable washers are widely used. The working principle of these cleaning devices is roughly to use the internal spray arm structure to rinse the internal objects, thereby achieving cleaning.

[0003] Taking a fruit and vegetable washing machine as an example, a fruit and vegetable washing machine is a special equipment for cleaning fruits and vegetables. It can effectively remove foreign objects and pesticide residues from fruits and vegetables. The spray arm is one of the most critical structures in the fruit and vegetable washing machine. It can spray washing water to all corners of the fruit and vegetable washing machine. The washing effect depends on the structure of the spray holes in the spray arm. At present, the spray hole structure in the existing fruit and vegetable washing machine spray arm is mostly straight. This water channel structure has the following shortcomings in specific applications: (1) The spray area of ​​washing water after passing through the spray hole is relatively narrow, the coverage area is small, and it is easy to have cleaning dead corners. (2) In order to achieve a good cleaning effect, multiple spray holes need to be added, but too many spray holes will lead to insufficient spray water pressure. Utility Model Content

[0004] To address the shortcomings of existing cleaning equipment, this utility model provides a spray arm structure and a cleaning machine. The spray arm structure is designed with a volute, and the inner cavity of the volute includes a vortex zone, an acceleration zone, and a flare. The washing water is pressurized as it flows through the volute, and forms a larger cleaning area after being sprayed out, thereby achieving a better cleaning effect.

[0005] The technical solution provided by this utility model is as follows: a spray arm structure, including a connecting pipe and a volute that are interconnected; in a first direction, the volute and the connecting pipe are arranged sequentially; in a second direction perpendicular to the first direction, the volute includes a vortex region and an acceleration region that are interconnected, the inner diameter of the vortex region is larger than the inner diameter of the acceleration region; a nozzle communicating with the outside and the acceleration region is provided on one side of the volute, and a flared end is provided at the end of the nozzle away from the acceleration region.

[0006] Optionally, at least a portion of the volute protrudes away from the nozzle to form a water storage area in the inner cavity of the volute, the water storage area being in communication with the vortex area.

[0007] Optionally, the inner wall of the volute includes a transition surface, through which the vortex region smoothly converges to the acceleration region.

[0008] Optionally, the ratio of the nozzle diameter to the inner diameter of the acceleration zone is 1:2.5~3.

[0009] Optionally, the inner wall of the connecting pipe is tangent to the vortex region.

[0010] Optionally, in the second direction, there is an angle between the nozzle and the axial centerline of the volute, the angle being 0° to 90°.

[0011] Optionally, the flare is a tapered surface with a cross-section that gradually increases in the direction away from the acceleration zone.

[0012] A cleaning machine comprising the aforementioned spray arm structure.

[0013] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: In view of the shortcomings of existing cleaning equipment, this utility model designs a spray arm structure with a volute. The inner cavity of the volute includes a vortex zone and an acceleration zone. When the washing water passes through the volute, it can be pressurized and sprayed out through the flared nozzle to form a larger cleaning area, thereby achieving a better cleaning effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a spray arm structure proposed in an embodiment of the present utility model.

[0015] Figure 2 This is one of the cross-sectional schematic diagrams of a spray arm structure proposed in an embodiment of this utility model.

[0016] Figure 3 This is a second cross-sectional schematic diagram of a spray arm structure proposed in an embodiment of this utility model. Detailed Implementation

[0017] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0018] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. The terms "first," "second," etc., used in this utility model are provided for the convenience of describing the technical solution of this utility model and have no specific limiting effect; they are all general terms and do not constitute a limitation on the technical solution of this utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contradict or conflict, all of which are within the scope of protection claimed by this utility model.

[0019] Example 1 Combined with appendix Figure 1 To be continued Figure 3 This embodiment proposes a spray arm structure, including a connecting pipe 1 and a volute 2 that are interconnected. In a first direction, the volute 2 and the connecting pipe 1 are arranged sequentially. In a second direction perpendicular to the first direction, the volute 2 includes an interconnected vortex region 21 and an acceleration region 22, with the inner diameter of the vortex region 21 being larger than the inner diameter of the acceleration region 22. A nozzle 20 communicating with the outside and the acceleration region 22 is provided on one side of the volute 2, and a flared end 201 is provided at the end of the nozzle 20 away from the acceleration region 22.

[0020] With attachment Figure 1Taking the orientation shown as an example, the first direction is the z-axis direction, and the second direction is the x-axis direction. The working principle of the spray arm structure in this embodiment is as follows: washing water enters from the connecting pipe 1 and flows to the volute 2, finally being sprayed out through the nozzle 20 on the side of the volute 2. During the flow of washing water through the volute 2, the vortex zone 21 enables the washing water to move in a high-speed circular motion along its interior, thereby forming a powerful vortex. Under the action of centrifugal force, the washing water forms an annular liquid film on the inner wall of the vortex zone 21. This annular liquid film flows towards the acceleration zone 22, which in turn accelerates the annular liquid film generated by the vortex zone 21, causing it to be sprayed out from the nozzle 20. Finally, the annular liquid film is sprayed from the flare 201 to the outside, forming a cone-shaped spray. This cone-shaped spray has a large spray area, thus achieving a good cleaning effect.

[0021] In a preferred embodiment, the inner wall of the connecting pipe 1 is connected to the vortex zone 21 in a tangential manner. The purpose is that when the washing water flows into the volute 2 from the connecting pipe 1, it can naturally flow along the inner wall of the volute 2, thereby making high-speed circular motion in the vortex zone 21 and forming a powerful vortex.

[0022] Furthermore, at least a portion of the volute 2 protrudes towards the side opposite to the nozzle 20 to form a water storage area 23 within the inner cavity of the volute 2, which communicates with the vortex area 21. The water storage area 23 ensures that the volute 2 is filled with washing water, thereby ensuring greater stability when the nozzle 20 sprays a cone-shaped mist.

[0023] Based on the aforementioned principles, it is clear that the washing water needs to flow from the vortex region 21 to the acceleration region 22, thus inevitably resulting in power loss along the flow path. To address this issue, in a preferred embodiment, the inner wall of the volute 2 further includes a transition surface 24, through which the vortex region 21 smoothly converges towards the acceleration region 22. Thus, the transition surface 24 ensures a smooth transition between the inner walls of the vortex region 21 and the acceleration region 22, thereby minimizing the power loss of the annular liquid film.

[0024] Furthermore, the washing water needs to be accelerated in the acceleration zone 22. The principle of the acceleration zone 22 is to change the liquid flow velocity by reducing the flow path; that is, the diameter of the inner wall of the acceleration zone 22 is smaller than the diameter of the inner wall of the vortex zone 21. Similarly, after being accelerated in the acceleration zone 22, the washing water is sprayed out from the nozzle 20. To ensure the spray pressure, the diameter of the nozzle 20 is generally smaller than the diameter of the acceleration zone 22. In a preferred embodiment, the ratio of the nozzle 20 diameter to the inner diameter of the acceleration zone 22 is 1:2.5~3. This ensures that the cone-shaped spray from the nozzle 20 has a certain pressure and flow velocity, thereby ensuring the cleaning effect.

[0025] Generally, the nozzle 20 is perpendicular to the side wall of the volute 2, which ensures that the ejected cone-shaped spray does not interfere with the spray arm structure itself. However, in other embodiments, the nozzle 20 can also be adjusted at an angle, that is, there can be an angle between the nozzle 20 and the axial centerline of the volute 2, with the angle being 0° to 90°.

[0026] In this implementation, with attachment Figure 3 Taking the orientation shown as an example, the included angle can be the included angle in the plane formed by the z-axis and x-axis. That is, the included angle at this time is actually the pitch angle of the nozzle 20, which is used to make the ejected cone spray have a specific pitch orientation.

[0027] Alternatively, the included angle can be the angle in the plane formed by the y-axis and x-axis, where the y-axis (i.e., the front-to-back direction) is perpendicular to the plane formed by the z-axis and x-axis. In this case, the included angle can be understood as the lateral deflection angle of the nozzle 20, which is used to give the ejected cone spray a specific lateral orientation.

[0028] Of course, it's understandable that the aforementioned different types of angles can coexist, allowing the sprayed cone to have specific orientations. When the sprayed cone has a specific orientation, it further avoids cleaning dead zones, resulting in a more thorough cleaning.

[0029] Furthermore, the end of the nozzle 20 is preferably provided with a flared end 201, which is a conical surface with a cross-section that gradually increases in the direction away from the acceleration zone 22. The flared end 201 can generally be achieved by chamfering, so that the washing water can be better diffused into a conical spray when it is sprayed from the nozzle 20, thereby ensuring the cleaning effect. Compared with the existing spray arm, it is not necessary to set multiple nozzles to obtain a larger spray area.

[0030] Example 2 Combined with appendix Figure 1 To be continued Figure 3 This embodiment proposes a cleaning machine, including a spray arm structure described in the technical solution of embodiment 1.

[0031] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A spray arm structure, characterized in that, It includes interconnected connecting pipes (1) and a volute (2); In the first direction, the volute (2) and the connecting pipe (1) are arranged sequentially; In a second direction perpendicular to the first direction, the volute (2) includes an interconnected vortex region (21) and an acceleration region (22), wherein the inner diameter of the vortex region (21) is larger than the inner diameter of the acceleration region (22). The volute (2) has a nozzle (20) on one side that connects to the outside and the acceleration zone (22), and the end of the nozzle (20) away from the acceleration zone (22) has a flared end (201).

2. The spray arm structure according to claim 1, characterized in that, At least a portion of the volute (2) protrudes away from the nozzle (20) to form a water storage area (23) in the inner cavity of the volute (2), the water storage area (23) being in communication with the vortex area (21).

3. The spray arm structure according to claim 1, characterized in that, The inner wall of the volute (2) includes a transition surface (24), and the vortex region (21) smoothly converges to the acceleration region (22) through the transition surface (24).

4. The spray arm structure according to claim 1, characterized in that, The ratio of the nozzle (20) diameter to the inner diameter of the acceleration zone (22) is 1:2.5~3.

5. The spray arm structure according to claim 1, characterized in that, The inner wall of the connecting pipe (1) is tangent to the vortex zone (21).

6. The spray arm structure according to claim 1, characterized in that, In the second direction, there is an angle between the nozzle (20) and the axial centerline of the volute (2), the angle being 0° to 90°.

7. The spray arm structure according to claim 1, characterized in that, The flare (201) is a tapered surface with a cross-section that gradually increases in the direction away from the acceleration zone (22).

8. A cleaning machine, characterized in that, Includes a spray arm structure as described in any one of claims 1-7.

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