Spraying arm for cleaning machine and cleaning machine

Abstract

The utility model relates to a spraying arm for a cleaning machine, which comprises a body and a disc-shaped nozzle arranged on the body, at least two first spraying holes and at least two second spraying holes are arranged on the side wall of the nozzle, the two first spraying holes are symmetrically arranged in the circumferential direction of the nozzle and vertically extend, and the second spraying holes are symmetrically arranged in the circumferential direction of the nozzle and vertically extend. The two second spraying holes are symmetrically formed in the circumferential direction of the nozzle and obliquely extend, and the inclination directions of the two second spraying holes are opposite. The two sets of spraying holes which are obliquely arranged provide autorotation driving force for the nozzle through water flow viscous force, the spraying directions of the two sets of spraying holes are different, a larger spraying coverage range can be provided, and stronger impact force can be provided for a specific range so that the cleaning effect can be improved; the vertically-arranged spraying holes and the obliquely-arranged spraying holes are matched together, the resultant force and torque borne by the nozzle in the horizontal plane can be better balanced, and therefore it is guaranteed that the nozzle can rotate smoothly and stably, the clamping stagnation and abrasion problems are eliminated, and the cleaning effect is further improved.

Description

Technical Field

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

[0002] As people's living standards improve, dishwashers have gradually become a common appliance in the kitchen. Dishwashers are generally provided with a spray arm that sprays upward and a water pumping mechanism for pumping water from the bottom of the cabinet to the spray arm, thereby continuously completing the water circulation and washing the dishes above the spray arm.

[0003] The applicant's prior patent ZL 202322079259.7 "Spray arm for cleaning machine and cleaning machine" discloses a structure, in which the spray arm includes a main body extending along the length direction, the interior of the main body is hollow to form a flow channel, the bottom wall of the main body is provided with a water inlet connected to the flow channel, the top wall of the main body is provided with a plurality of spray holes arranged at intervals and connected to the flow channel, the top wall of the main body is provided with a water outlet arranged near the end, and a nozzle that can rotate relative to the main body is rotatably connected to the water outlet, and the nozzle is provided with at least two spray holes.

[0004] In the above solution, when the spray arm rotates, the nozzle can rotate with it and can also rotate on its own, so as to spray the outer periphery of the bowl basket and the inner wall of the washing chamber to eliminate the cleaning dead corners and improve the cleaning effect. However, when the nozzle rotates relative to the spray arm body, it is easy to cause the speed to be unstable and stuck due to the unbalanced impact force of the water flow in all directions, which will not only cause wear on the connection between the nozzle and the body, but also cause the water flow sprayed by the nozzle to fail to fully reach the set area, affecting the cleaning effect.

[0005] Therefore, further improvements are needed for the spray arm structure currently used in cleaning machines. Utility Model Content

[0006] The first technical problem to be solved by the utility model is to provide a spray arm for a cleaning machine which can effectively avoid jamming and wear and improve the cleaning effect in view of the current status of the prior art.

[0007] The second technical problem to be solved by the utility model is to provide a cleaning machine using the above-mentioned spray arm in view of the current status of the prior art.

[0008] The technical solution adopted by the utility model to solve the above technical problems is:

[0009] A spray arm for a cleaning machine comprises a body and a disc-shaped nozzle arranged on the body, a first spray hole and a second spray hole are opened on the side wall of the nozzle, the first spray holes are at least two, the two first spray holes are symmetrically arranged in the circumferential direction of the nozzle and extend vertically, the second spray holes are at least two, the two second spray holes are symmetrically arranged in the circumferential direction of the nozzle and extend obliquely, and the inclination directions of the two second spray holes are opposite.

[0010] The utility model sets the two spray holes of the nozzle as vertical spray holes and the other two spray holes as inclined spray holes. The two groups of inclined spray holes provide the nozzle with self-rotation driving force through the viscosity of water flow, and the spray directions of the two groups of spray holes are different, which can provide a larger spray coverage range and provide a stronger impact force for a specific range to improve the cleaning effect; at the same time, the vertically arranged spray holes and the inclinedly arranged spray holes cooperate together to better balance the resultant force and torque exerted on the nozzle in the horizontal plane, thereby ensuring that the nozzle can rotate smoothly and stably, eliminating the problems of sticking and wear, stabilizing the spray range of the nozzle, and further improving the cleaning effect.

[0011] Preferably, the spray direction of the first spray hole is arranged perpendicular to the side wall of the nozzle. The first spray hole is mainly used to balance the force of the nozzle in the horizontal plane. The vertically arranged first spray hole has the ultimate balancing force.

[0012] Preferably, the nozzle side wall has a first ring line and a second ring line arranged along the circumferential direction, the radius of the first ring line is R, the radius of the second ring line is r, R>r, the first spray hole and the second spray hole are arranged on the same or different ring lines, and each of the first spray holes is located on the same ring line, and each of the second spray holes is located on the same ring line. With such a structure, the spray range can be expanded and the cleaning effect can be improved.

[0013] Preferably, the first spray hole is located on the first loop line, and the second spray hole is located on the second loop line. The vertical water column is arranged sideways to directly flush the area outside the washing chamber, further improving the cleaning effect.

[0014] As an improvement, a barrier arm that bends upward and can block the first spray hole on the first loop line is provided at the side edge of the body. Preferably, the barrier arm is formed into an L-shaped structure, the vertical portion of the L-shaped structure extends upward from the edge of the body, and the horizontal portion of the L-shaped structure is located above the top wall of the nozzle and extends toward the center of the nozzle to at least cover the inner edge of the first spray hole. When the nozzle is rotated until the barrier arm is aligned with the first spray hole, the barrier arm can be used to instantly block the water output of the first spray hole, so that the nozzle rotation speed also fluctuates regularly, thereby improving the richness of the cleaning mode to meet the needs of cleaning more cleaning areas.

[0015] Preferably, an axis L is formed between the two first spray holes, and the two second spray holes are symmetrically arranged on both sides of the axis L. The acute angle between the axis of the second spray hole and the axis L is 30 to 50 degrees, and the acute angle between the axis of the second spray hole and the horizontal plane is 60 to 80 degrees. The above structure, combined with the vertically arranged first spray holes, theoretically ensures that the resultant force of the nozzle in the horizontal plane is 0 and the torque around the two axes of the horizontal plane is 0, thereby eliminating the nozzle jam problem.

[0016] A cleaning machine comprises a box body, a concave water return area is arranged at the bottom of the box body, the top of the water return area is covered with a filter plate, and also comprises the above-mentioned spray arm, which is rotatably arranged on the filter plate and connected to the water return area through a water pump mechanism.

[0017] Compared with the prior art, the advantages of the utility model are: the utility model sets the two spray holes of the nozzle as vertical spray holes and the two spray holes as inclined spray holes, and the two groups of spray holes arranged obliquely provide the nozzle with self-rotation driving force through the viscosity of the water flow, and the spray directions of the two groups of spray holes are different, which can provide a larger spray coverage range and provide a stronger impact force for a specific range to improve the cleaning effect; at the same time, the vertically arranged spray holes and the inclinedly arranged spray holes work together to better balance the resultant force and torque exerted on the nozzle in the horizontal plane, thereby ensuring that the nozzle can rotate smoothly and steadily, eliminating the problems of jamming and wear, stabilizing the spray range of the nozzle, and further improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the spray arm of an embodiment of the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the bottom structure;

[0020] Figure 3 for Figure 1 A partial cross-sectional view of

[0021] Figure 4 This is a schematic diagram of the structure of the nozzle of the utility model embodiment;

[0022] Figure 5 for Figure 4 A top view of

[0023] Figure 6 for Figure 4 Side view of. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] like Figures 1 to 6As shown, the spray arm for the washing machine of this embodiment includes a body 1 extending in the length direction, and the body 1 is hollow inside to form a flow channel 12, and the flow channel 12 also extends in the length direction of the body 1. A water inlet 13 connected to the flow channel is opened in the central part of the bottom wall of the body 1, and a plurality of spray holes 14 arranged at intervals and connected to the flow channel are opened on the top wall of the body 1. A water outlet 15 arranged near the end is opened on the top wall of the body 1, and a nozzle 2 that can rotate relative to the body 1 is rotatably connected to the water outlet 15, and a spray hole is opened on the nozzle 2. The nozzle 2 is located at the end of the spray arm, and while rotating with the spray arm, it can also rotate by itself, so as to spray the outer periphery of the bowl basket and the inner wall of the washing chamber, so as to further eliminate the cleaning dead corners and improve the cleaning effect.

[0026] The nozzle 2 of this embodiment is disc-shaped, and a first spray hole 21 and a second spray hole 22 are opened on the side wall of the nozzle 2. There are two first spray holes 21, which are symmetrically arranged in the circumferential direction of the nozzle 2 and extend vertically. There are two second spray holes 22, which are symmetrically arranged in the circumferential direction of the nozzle 2 and extend obliquely, and the inclination directions of the two second spray holes 22 are opposite.

[0027] The spray direction of the first spray hole 21 is arranged perpendicular to the side wall (the top wall in this embodiment) of the nozzle 2. The first spray hole 21 is mainly used to balance the force of the nozzle 2 in the horizontal plane. The vertically arranged first spray hole 21 has the ultimate balancing force.

[0028] The side wall of the nozzle 2 has a first loop line m and a second loop line n arranged in the circumferential direction. The radius of the first loop line m is R, and the radius of the second loop line n is r, R>r. The first spray hole 21 and the second spray hole 22 are arranged on the same or different loop lines, and each first spray hole 21 is located on the same loop line, and each second spray hole 22 is located on the same loop line. With such a structure, the spray range can be expanded and the cleaning effect can be improved. The first spray hole 21 of this embodiment is located on the first loop line m, and the second spray hole 22 is located on the second loop line n. The vertical water column is arranged sideways, and it can be directly sprayed to the area outside the washing chamber, further improving the cleaning effect.

[0029] In this embodiment, a barrier arm 11 is provided at the side edge of the body 1, which is bent upward and can block the first spray hole 21 on the first loop line m. The barrier arm 11 is formed into an L-shaped structure, and the vertical portion 111 of the L-shaped structure extends upward from the edge of the body 1, and the horizontal portion 112 of the L-shaped structure is located on the top wall of the nozzle 2 and extends toward the center of the nozzle 2 to at least cover the inner edge of the first spray hole 21. When the nozzle 2 rotates until the barrier arm 11 is aligned with the first spray hole 21, the barrier arm 11 can be used to instantly block the water output of the first spray hole 21, so that the rotation speed of the nozzle 2 also fluctuates regularly, thereby improving the richness of the cleaning mode to meet the cleaning needs of more cleaning areas.

[0030] An axis L is formed between the two first spray holes 21, and the two second spray holes 22 are symmetrically arranged on both sides of the axis L. The acute angle between the axis of the second spray hole 22 and the axis L is 30 to 50 degrees, and the acute angle between the axis of the second spray hole 22 and the horizontal plane is 60 to 80 degrees. The above structure, combined with the vertically arranged first spray holes 21, theoretically ensures that the resultant force of the nozzle 2 in the horizontal plane is 0 and the moment around the two axes of the horizontal plane is 0, thereby eliminating the problem of nozzle 2 being stuck.

[0031] The cleaning machine of this embodiment includes a box body, a concave water return area is provided at the bottom of the box body, the top of the water return area is covered with a filter plate, and also includes the above-mentioned spray arm, which is rotatably provided on the filter plate and is connected to the water return area through a water pump mechanism. A slag collection basket for collecting slag during the cleaning process is also provided, the lower part of the slag collection basket is accommodated in the water return area, the top of the slag collection basket has a slag collection port exposed from the filter plate, and the slag collection port is arranged in the upper and lower directions corresponding to the inner side of the third spray hole and the slag sweeping hole, so as to facilitate slag collection.

[0032] In this embodiment, the two spray holes of the nozzle 2 are set as vertical spray holes and the two spray holes are set as inclined spray holes. The two groups of spray holes arranged obliquely provide the nozzle with self-rotation driving force through the viscosity of the water flow, and the spray directions of the two groups of spray holes are different, which can provide a larger spray coverage range and provide a stronger impact force for a specific range to improve the cleaning effect; at the same time, the vertically arranged spray holes and the inclinedly arranged spray holes work together to better balance the resultant force and torque exerted on the nozzle in the horizontal plane, thereby ensuring that the nozzle can rotate smoothly and stably, eliminating the problems of jamming and wear, stabilizing the spray range of the nozzle, and further improving the cleaning effect.

[0033] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A spray arm for a cleaning machine, comprising a body (1) and a nozzle (2) in the shape of a disc arranged on the body (1), characterized in that: A first spray hole (21) and a second spray hole (22) are provided on the side wall of the nozzle (2), the number of the first spray holes (21) being at least two, the two first spray holes (21) being symmetrically arranged in the circumferential direction of the nozzle (2) and extending vertically, the number of the second spray holes (22) being at least two, the two second spray holes (22) being symmetrically arranged in the circumferential direction of the nozzle (2) and extending obliquely, and the inclination directions of the two second spray holes (22) being opposite.

2. The spray arm for a cleaning machine according to claim 1, characterized in that: The spraying direction of the first spray hole (21) is arranged perpendicular to the side wall of the nozzle (2).

3. The spray arm for a cleaning machine according to claim 1, characterized in that: The side wall of the nozzle (2) has a first ring line (m) and a second ring line (n) arranged in a circumferential direction, the radius of the first ring line (m) is R, the radius of the second ring line (n) is r, R>r, the first spray holes (21) and the second spray holes (22) are arranged on the same or different ring lines, and each of the first spray holes (21) is located on the same ring line, and each of the second spray holes (22) is located on the same ring line.

4. The spray arm for a cleaning machine according to claim 3, characterized in that: The first spray hole (21) is located on a first loop line (m), and the second spray hole (22) is located on a second loop line (n).

5. The spray arm for a cleaning machine according to claim 4, characterized in that: A blocking arm (11) is provided at the side edge of the body (1) and is bent upward and can shield the first spray hole (21) on the first loop line (m).

6. The spray arm for a cleaning machine according to claim 5, characterized in that: The barrier arm (11) is formed into an L-shaped structure, the vertical portion (111) of the L-shaped structure extending upward from the edge of the body (1), and the transverse portion (112) of the L-shaped structure being located above the top wall of the nozzle (2) and extending toward the center of the nozzle (2) to at least cover the inner edge of the first spray hole (21).

7. The spray arm for a cleaning machine according to any one of claims 1 to 6, characterized in that: An axis L is formed between the two first spray holes (21), and the two second spray holes (22) are symmetrically arranged on both sides of the axis L.

8. The spray arm for a cleaning machine according to claim 7, characterized in that: The acute angle formed between the axis line of the second spray hole (22) and the axis L is 30 to 50 degrees.

9. The spray arm for a cleaning machine according to any one of claims 1 to 6, characterized in that: The acute angle formed between the axis of the second spray hole (22) and the horizontal plane is 60 to 80 degrees.

10. A cleaning machine, comprising a box, wherein a concave water return area is provided at the bottom of the box, and a filter plate is covered on the top of the water return area, characterized in that: It also comprises a spray arm according to any one of claims 1 to 9, wherein the spray arm is rotatably disposed on the filter plate and is connected to the water return area through a water pump mechanism.

Images