Cleaning machine

Abstract

The utility model relates to a cleaning machine which comprises a box body and a top-layer spraying arm, the top-layer spraying arm is restrained on the inner top wall of the box body and is provided with a rotating disc capable of scattering water flow in all directions, and the water outlet end of a water pipe is located on the side portion of the rotating disc and used for spraying outlet water to the rotating disc. And a speed control structure capable of changing the rotating speed of the rotating disc along with the change of water pressure is arranged in the top spraying arm. The top-layer spraying arm is transformed into a structure capable of scattering water flow in all directions, after the water flow is sprayed to the rotating disc through the water outlet end of the water pipe, the rotating disc rotates under the impact of the water flow, the rotating speed of the rotating disc is increased along with increase of water pressure and decreased along with decrease of the water pressure under the limitation of the speed-controlled structure in the rotating process, and no matter the rotating speed is increased or decreased, the rotating speed is reduced. The rotating speed of the top spraying arm can be kept stable under the buffering effect provided by the speed control structure, so that the problems that the rotating speed of the top spraying arm is high and low and the top spraying arm is stuck irregularly are solved, the uniform and stable spraying state is kept, and the cleaning effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a washing machine for washing tableware, fruits and vegetables. Background Art

[0002] Currently, dishwashers with larger capacities are generally provided with multiple layers of spray arms.

[0003] For example, the Chinese utility model patent "Water Flow System for Cleaning Machine and Cleaning Machine" (Application No.: CN202321315257.7), with authorization publication number CN219846437U, discloses a structure with a bottom spray arm, a middle spray arm, and a top spray arm, each of which is pumped by a single water pump located at the bottom of the housing. Because pressure is lost during the upward flow of water, insufficient water pressure may occur in the top spray arm. Since the rotation of the spray arm is driven by the viscosity of the water flow, this can cause the top spray arm to become stuck or experience unstable rotation speed, affecting the cleaning effect.

[0004] Therefore, for current cleaning machine, further improvement remains to be done. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a cleaning machine which can adjust the rotation speed according to the water pressure so as to maintain the rotation stability and thus improve the cleaning effect in view of the current status of the existing technology.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] A cleaning machine comprises a box body and a top-level spray arm, wherein a return water area is provided at the bottom of the box body, the top-level spray arm is arranged in the box body and located at the top of the box body, the top-level spray arm is connected to the return water area through a water pipe and a water pump, the top-level spray arm is constrained on the top wall of the box body and is provided with a rotating disk capable of breaking up the water flow in all directions, the water outlet end of the water pipe is located on the side of the rotating disk and is used to spray the outlet water toward the rotating disk, and the top-level spray arm is provided with a speed control structure capable of changing the rotation speed of the rotating disk as the water pressure changes.

[0008] The utility model transforms the top-layer spray arm into a structure that can disperse the water flow in all directions. After the water flow is sprayed to the rotating disk through the water outlet end of the water pipe, the rotating disk rotates under the impact of the water flow. During the rotation process, it is restricted by the speed control structure. The speed will increase with the increase of water pressure and decrease with the decrease of water pressure. Regardless of whether the speed increases or decreases, a relatively stable speed will be maintained under the buffering effect provided by the speed control structure, so as to avoid the problem of the top-layer spray arm speed being fast or slow and getting stuck from time to time, thereby maintaining a uniform and stable spraying state and improving the cleaning effect.

[0009] Preferably, the top-level spray arm includes a base constrained to the top wall of the housing, with the rotating disk rotatably mounted below the base. The contact surface between the rotating disk and the base forms a structure that creates a stepped friction fit as the two rotate relative to each other, which is the aforementioned speed control mechanism. With this structure, the rotating disk forms a stepped friction fit during its rotation, generating a vibration feedback each time the rotating disk passes over a small step area, thereby balancing the rotating disk's rotational speed and maintaining a relatively stable rotational speed.

[0010] Preferably, the top of the rotating disk is formed with a first contact surface, and the base is correspondingly formed with a second contact surface that cooperates with the first contact surface. The top spray arm further includes an elastic member that enables the rotating disk to continuously move upward so that the first contact surface and the second contact surface are always in contact. The provision of the elastic member ensures that there is always frictional engagement between the rotating disk and the base when the step is formed, thereby achieving a speed control effect.

[0011] Preferably, the base has a mounting sleeve extending downward from the top wall of the housing. A plug-in portion is formed in the center of the rotating disk and rotatably inserts into the mounting sleeve. The first contact surface is located on the top wall of the plug-in portion, and the second contact surface is located on the top wall of the inner cavity formed by the mounting sleeve. This structure facilitates assembly and connection between the rotating disk and the base, and forms a stable mating relationship.

[0012] Preferably, the first contact surface is provided with a first gear ring arranged along its circumference, and the second contact surface is provided with a second gear ring arranged along its circumference and capable of rotating with the first gear ring to form a stepped friction feedback. This structure facilitates the formation of a stepped friction fit.

[0013] Preferably, the lower portion of the plug-in connector is positioned below the mounting sleeve. Extension arms are spaced circumferentially around the outer periphery of the lower portion of the plug-in connector. These extension arms correspond to the outlet end of the water pipe and are used to disperse the water flow in all directions and transmit water pressure to the speed control structure. This structure facilitates the extension arms to disperse the water flow in all directions, expanding the spray range and eliminating blind spots. Simultaneously, the extension arms transmit water pressure to the speed control structure, thereby balancing and stabilizing the rotation of the rotating disk and preventing issues such as the rotating disk speed fluctuating or becoming stuck.

[0014] Preferably, the plug-in portion defines a receiving cavity extending upward from the bottom wall. The base assembly assembly includes a connecting post extending downward from a central portion, passing through the top of the plug-in portion, and positioned within the receiving cavity. The elastic member is disposed within the receiving cavity and is connected to the connecting post and the cavity's top wall, respectively. Preferably, an end cap is provided at the lower end of the connecting post, and the elastic member is sleeved around the outer periphery of the connecting post, with the upper end of the elastic member abutting against the cavity's top wall and the lower end abutting against the end cap. This structure facilitates installation of the elastic member.

[0015] Preferably, the water pipe includes a lower portion extending upward from the return water area, close to the bottom wall and inner side wall of the box body, and an upper portion extending close to the top wall of the box body after bending at the top edge of the box body. The opening at the upper end of the water pipe forms the water outlet, and the center of the water pipe opening is offset relative to the axis of the rotating disk. This structure ensures that water sprayed from the water pipe can always drive the rotating disk to rotate.

[0016] Preferably, the present invention also includes a bottom spray arm and a middle spray arm. The bottom spray arm is located at the bottom of the box and close to the return water area, while the middle spray arm is located in the middle of the box and connected to the water pipe via a water pipe. This structure is conducive to expanding the cleaning range, eliminating blind spots, and improving the cleaning effect.

[0017] Compared with the prior art, the advantages of the present invention are: the present invention transforms the top-level spray arm into a structure that can disperse the water flow in all directions. After the water flow is sprayed to the rotating disk through the water outlet end of the water pipe, the rotating disk rotates under the impact of the water flow. During the rotation process, it is restricted by the speed control structure. The speed will increase with the increase of water pressure and decrease with the decrease of water pressure. Regardless of whether the speed increases or decreases, a relatively stable speed will be maintained under the buffering effect provided by the speed control structure, so as to avoid the problem of the top-level spray arm speed being fast or slow and getting stuck from time to time, thereby maintaining a uniform and stable spraying state and improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a partial structural diagram of an embodiment of the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram from another angle;

[0020] Figure 3 This is a schematic diagram of the top spray arm in an embodiment of the present utility model;

[0021] Figure 4 for Figure 3 Exploded view of

[0022] Figure 5 for Figure 4 Schematic diagram from another angle;

[0023] Figure 6 for Figure 3 sectional view of . DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0025] like Figure 1 As shown in Figures 6 to 7, the cleaning machine of this embodiment includes a housing 1 and a top-level spray arm 2. A return water area 11 is provided at the bottom of the housing 1. The top-level spray arm 2 is provided in the housing 1 and is located at the top of the housing 1. The top-level spray arm 2 is connected to the return water area 11 through a water pipe 3 and a water pump (not shown in the figure). The top-level spray arm 2 is constrained on the top wall of the housing 1 and is provided with a rotating disk 21 that can disperse the water flow in all directions. The water outlet end of the water pipe 3 is located on the side of the rotating disk 21 and is used to spray the outlet water toward the rotating disk 21. The top-level spray arm 2 is provided with a speed control structure that can change the rotation speed of the rotating disk 21 with changes in water pressure.

[0026] The top-level spray arm 2 includes a base 22 constrained to the inner top wall of the housing 1. A rotating disc 21 is rotatably mounted below this base 22. The contact surface between the rotating disc 21 and the base 22 forms a stepped friction fit as the two rotate relative to each other, a speed control mechanism. This structure creates a stepped friction fit a during the rotation of the rotating disc 21. Each time the rotating disc 21 passes a small step, a vibration feedback is generated, thereby balancing the rotational speed of the rotating disc 21 and maintaining a relatively stable rotational speed.

[0027] The top of the rotating disk 21 is formed with a first contact surface 211. Accordingly, the base 22 is formed with a second contact surface 221 that mates with the first contact surface 211. The top spray arm 2 also includes an elastic member 23 that enables the rotating disk 21 to continuously move upward, thereby maintaining contact between the first contact surface 211 and the second contact surface 221. The elastic member 23 ensures a constant friction fit between the rotating disk 21 and the base, thus controlling the speed.

[0028] The base 22 includes a mounting sleeve 222 extending downward from the inner top wall of the housing 1. A plug-in portion 212 is formed in the center of the rotating disk 21 and rotatably inserted into the mounting sleeve 222. The first contact surface 211 is located on the top wall of the plug-in portion 212, and the second contact surface 221 is located on the top wall of the inner cavity formed by the mounting sleeve 222. This structure facilitates assembly and connection between the rotating disk 21 and the base 22, forming a stable fit.

[0029] The first contact surface 211 is provided with a first gear ring arranged along its circumference, and the second contact surface 221 is provided with a second gear ring arranged along its circumference and capable of rotating with the first gear ring to form a stepped friction feedback. This structure facilitates the formation of stepped friction fit.

[0030] The lower portion of the plug-in portion 212 is positioned below the mounting sleeve 222. The outer periphery of the lower portion of the plug-in portion 212 is provided with circumferentially spaced extension arms 213. These extension arms 213 correspond to the outlet end of the water pipe 3 and are used to disperse the water flow in all directions and transmit the water pressure to the speed control structure. This structure facilitates the extension arms 213 to disperse the water flow in all directions, expanding the spray range and eliminating blind spots. At the same time, it transmits the water pressure to the control structure, thereby balancing and stabilizing the rotation of the rotating disk 21 and preventing the rotating disk 21 from rotating at different speeds or becoming stuck.

[0031] The plug-in portion 212 defines a receiving cavity 214 extending upward from the bottom wall. The base assembly sleeve 222 includes a connecting post 223 extending downward from the center, passing through the top of the plug-in portion 212, and positioned within the receiving cavity 214. The elastic member 23 is disposed within the receiving cavity 214 and connected to the connecting post 223 and the top wall of the receiving cavity 214, respectively. The lower end of the connecting post 223 is provided with an end cap 24, which can be screwed to the bottom of the connecting post 223. The elastic member 23 is sleeved around the outer periphery of the connecting post 223, with its upper end abutting against the inner top wall of the receiving cavity 214 and its lower end abutting against the end cap 24. This structure facilitates installation of the elastic member 23.

[0032] The water pipe 3 comprises a lower portion extending upward from the return water area 11, close to the inner bottom and inner side walls of the housing 1, and an upper portion extending close to the inner top wall of the housing 1 after bending at the top edge of the housing 1. The upper end of the water pipe 3 is open to form the water outlet, and the center of the opening of the water pipe 3 is offset relative to the axis of the rotating disk 21. This structure ensures that the water sprayed from the water pipe 3 can always drive the rotating disk 21 to rotate.

[0033] This embodiment also includes a bottom spray arm 4 and a middle spray arm 5. The bottom spray arm 4 is located at the bottom of the tank 1 and is arranged near the return water area 11. The middle spray arm 5 is located in the middle of the tank 1 and is connected to the water pipe 3 through a water pipe 51. This structure is conducive to expanding the cleaning range, eliminating blind spots in cleaning, and improving the cleaning effect.

[0034] In this embodiment, the top-level spray arm 2 is transformed into a structure that can disperse the water flow in all directions. After the water flow is sprayed onto the rotating disk 21 through the water outlet end of the water pipe 3, the rotating disk 21 rotates under the impact of the water flow. During the rotation process, it is restricted by the speed control structure. The speed will increase with the increase of water pressure and decrease with the decrease of water pressure. Regardless of whether the speed increases or decreases, a relatively stable speed will be maintained under the buffering effect provided by the speed control structure, so as to avoid the problem of the top-level spray arm 2 rotating at different times and getting stuck at irregular intervals, thereby maintaining a uniform and stable spraying state and improving the cleaning effect.

[0035] In the specification and claims of the present invention, directional terms such as "front," "back," "up," "down," "left," "right," "side," "top," and "bottom" are used to describe various exemplary structural parts and components of the present invention. However, these terms are used herein for convenience of description only and are based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different orientations, these directional terms are intended for illustrative purposes only and should not be construed as limiting. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A cleaning machine, comprising a housing (1) and a top-level spray arm (2), wherein a return water area (11) is provided at the bottom of the housing (1), the top-level spray arm (2) is provided in the housing (1) and is located at the top of the housing (1), and the top-level spray arm (2) is connected to the return water area (11) through a water pipe (3) and a water pump, characterized in that: The top-layer spray arm (2) is constrained on the top wall of the box (1) and is provided with a rotating disk (21) capable of breaking up the water flow in all directions. The water outlet end of the water pipe (3) is located on the side of the rotating disk (21) and is used to spray the outlet water toward the rotating disk (21). The top-layer spray arm (2) is provided with a speed control structure capable of changing the rotation speed of the rotating disk (21) as the water pressure changes.

2. The cleaning machine according to claim 1, characterized in that: The top-layer spray arm (2) includes a base (22) constrained on the inner top wall of the box body (1), and the rotating disk (21) is rotatably arranged at the lower part of the base (22). The contact surface of the rotating disk (21) and the base (22) forms a structure that can perform step-type friction cooperation as the two rotate relative to each other, and this structure is the speed control structure.

3. The cleaning machine according to claim 2, characterized in that: The top of the rotating disk (21) is formed with a first contact surface (211), and correspondingly, the base (22) is formed with a second contact surface (221) that matches the first contact surface (211). The top-layer spray arm (2) further includes an elastic member (23) that enables the rotating disk (21) to always move upward, thereby always maintaining a contact state between the first contact surface (211) and the second contact surface (221).

4. The cleaning machine according to claim 3, characterized in that: The base (22) has a mounting sleeve (222) extending downward from the inner top wall of the box body (1); a plug-in portion (212) rotatably inserted into the mounting sleeve (222) is formed at the central portion of the rotating disk (21); the first contact surface (211) is located on the top wall of the plug-in portion (212); and the second contact surface (221) is located on the top wall of the inner cavity formed by the mounting sleeve (222).

5. The cleaning machine according to claim 3, characterized in that: The first contact surface (211) is provided with a first gear ring arranged along its circumference, and the second contact surface (221) is provided with a second gear ring arranged along its circumference and capable of rotating with the first gear ring to form a stepped friction feedback.

6. The cleaning machine according to claim 4, characterized in that: The lower portion of the plug-in portion (212) is located below the assembly sleeve (222). The outer periphery of the lower portion of the plug-in portion (212) is provided with extension arms (213) arranged at intervals along the circumferential direction. The extension arms (213) are arranged corresponding to the water outlet end of the water pipe (3). The extension arms (213) are used to disperse the water flow in all directions and transmit the water pressure to the speed control structure.

7. The cleaning machine according to claim 4, characterized in that: The plug-in portion (212) is provided with a receiving cavity (214) extending upward from the bottom wall, and the assembly sleeve (222) of the base (22) is provided with a connecting column (223) extending downward from the central portion and passing through the top of the plug-in portion (212) and located in the receiving cavity (214). The elastic member (23) is provided in the receiving cavity (214) and is respectively connected to the connecting column (223) and the top wall of the receiving cavity (214).

8. The cleaning machine according to claim 7, characterized in that: The lower end of the connecting column (223) is provided with an end cap (24), and the elastic member (23) is sleeved on the outer periphery of the connecting column (223). The upper end of the elastic member (23) abuts against the inner top wall of the accommodating cavity (214), and the lower end abuts against the end cap (24).

9. The cleaning machine according to any one of claims 1 to 8, characterized in that: The water pipe (3) comprises a lower portion extending upward from the return water area (11) close to the inner bottom wall and inner side wall of the box body (1), and an upper portion extending close to the inner top wall of the box body (1) after being bent at the top edge of the box body (1). The end opening (30) of the upper portion of the water pipe (3) forms the water outlet end, and the center of the end opening (30) of the water pipe (3) is offset relative to the axis of the rotating disk (21).

10. The cleaning machine according to any one of claims 1 to 8, characterized in that: It also includes a bottom spray arm (4) and a middle spray arm (5), wherein the bottom spray arm (4) is arranged at the lower part of the box body (1) and close to the return water area (11), and the middle spray arm (5) is arranged in the middle part of the box body (1) and is connected to the water pipe (3) through the water guide pipe (51).

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