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, a first nozzle arranged close to the first end of the body and a second nozzle arranged close to the second end of the body are arranged at the top of the body, and spraying holes for spraying water flow are formed in the side walls of the first nozzle and the second nozzle. And the hole diameter of the spray hole in the first spray nozzle is larger than that of the spray hole in the second spray nozzle. The first nozzle and the second nozzle which are respectively arranged close to the two ends of the body are arranged on the body, the spraying holes in the nozzles rotate along with the body and rotate automatically, the cleaning area can be enlarged, meanwhile, the hole diameter of the spraying holes in the first nozzle is larger than that of the spraying holes in the second nozzle, different water outlet amounts of the two nozzles are controlled, and the cleaning effect is improved. And the rotating speed and the jet flow height of the nozzles can be controlled through different water outlet amounts, so that the spraying arm body and the nozzles at the two ends of the spraying arm body can give consideration to a larger cleaning area and cleaning strength, and the overall cleaning effect is 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 accordingly and can also rotate by itself, 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, since the nozzle rotates at a constant speed relative to the spray arm body, the water flow sprayed by each nozzle has the same tendency, and cannot fully cover the area to be cleaned, 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 cover a larger cleaning area and thus 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 at least one of 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, wherein a first nozzle arranged near a first end thereof and a second nozzle arranged near a second end thereof are arranged on the top of the body, spray holes for spraying water flow are provided on the side walls of the first nozzle and the second nozzle, and the aperture of the spray hole on the first nozzle is larger than the aperture of the spray hole on the second nozzle.

[0010] The utility model is provided with a first nozzle and a second nozzle respectively arranged near two ends thereof on a main body, and the spray holes on each nozzle rotate along with the main body and rotate on its own, so as to expand the cleaning area. At the same time, the aperture of the spray hole on the first nozzle is larger than the aperture of the spray hole on the second nozzle, which not only controls the different water outputs of the two nozzles, but also controls the rotation speed and jet height of the nozzles through the difference in water output, so that the spray arm main body and the nozzles at both ends thereof can take into account a larger cleaning area and cleaning intensity, thereby improving the overall cleaning effect.

[0011] Preferably, the first nozzle is provided with a first spray hole, the second nozzle is provided with a second spray hole, the aperture of the first spray hole is R, the aperture of the second spray hole is r, and R = (1.05-1.2)r. More preferably, R = 1.1r. With the above structure, on the premise that the number of the first spray hole and the second spray hole is the same, it is convenient to adjust the spray water volume, spray height and rotation speed of the first nozzle and the second nozzle as needed, so as to further adapt to different cleaning needs.

[0012] Preferably, the number of the first spray holes is equal to the number of the second spray holes, there are at least two first spray holes / second spray holes, which are arranged at intervals and extend obliquely in the circumferential direction of the corresponding nozzle, and the inclination trend of each first spray hole / second spray hole in the circumferential direction of the nozzle is consistent. The above structure is conducive to making the nozzle rotate more stably relative to the body.

[0013] Preferably, there are four first spray holes / second spray holes, two of which form an axis L, and the other two first spray holes / second spray holes are symmetrically arranged on both sides of the axis L and form an acute angle of 5 to 10 degrees with the axis L. The acute angle between the axis of the first spray hole / second spray hole and the horizontal plane is 35 to 55 degrees. The above structure 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.

[0014] In order to facilitate assembly, a water outlet is provided on the top wall of the main body, and a water inlet sleeve extending downward and rotatably connected to the water outlet is provided on the bottom wall of the nozzle.

[0015] Preferably, the lower end of the water inlet sleeve is provided with a clamping edge that can be clamped and limited with the top wall of the main body, and the outer surface of the water inlet sleeve is provided with a limiting groove for clamping the edge of the water outlet therein, and the limiting groove is rotatably matched with the edge of the water outlet of the main body. The above structure is conducive to improving the rotational sealing between the nozzle and the main body to avoid water leakage while improving the rotational stability of the nozzle.

[0016] As an improvement, the outer wall of the water inlet sleeve in the limiting groove is provided with elastic ribs arranged along the circumferential direction and capable of elastic sealing and rotational cooperation with the inner wall of the water outlet. The water inlet sleeve can be made of hard plastic integrally formed with the nozzle, while the elastic ribs are made of silicone material with better elasticity and softness. The elastic ribs can be welded in the limiting groove. The above structure can further improve the sealing between the nozzle and the water outlet and avoid water leakage. At the same time, the elastic force of the elastic ribs can be used to balance and self-regulate the force on the circumferential direction of the nozzle, thereby improving the rotation stability of the nozzle and avoiding jamming.

[0017] 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.

[0018] Compared with the prior art, the utility model has the following advantages: the utility model is provided with a first nozzle and a second nozzle respectively arranged near the two ends of the main body, and the spray holes on each nozzle rotate with the main body and rotate on its own, so as to expand the cleaning area. At the same time, the aperture of the spray hole on the first nozzle is larger than the aperture of the spray hole on the second nozzle, which not only controls the different water outputs of the two nozzles, but also controls the rotation speed and jet height of the nozzles through the difference in water output, so that the spray arm main body and the nozzles at both ends of the spray arm can take into account a larger cleaning area and cleaning intensity, thereby improving the overall cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the spray arm of an embodiment of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the bottom structure;

[0021] Figure 3 for Figure 1 A partial cross-sectional view of

[0022] Figure 4 This is a schematic diagram of the structure of the nozzle of the utility model embodiment;

[0023] Figure 5 for Figure 4 A top view of

[0024] Figure 6 for Figure 4 Side view of. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 6As shown, the spray arm for the washing machine of this embodiment includes a main body 1 extending in the length direction, and the main body 1 is hollow inside to form a flow channel 12, and the flow channel 12 also extends in the length direction of the main body 1. A water inlet 13 connected to the flow channel is opened in the central part of the bottom wall of the main 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 main body 1. A water outlet 15 arranged near the end is opened on the top wall of the main body 1, and a nozzle that can rotate relative to the main body 1 is rotatably connected to the water outlet 15, and a spray hole is opened on the nozzle. The nozzle 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.

[0027] The nozzle of this embodiment is disc-shaped, and the top of the body 1 is provided with a first nozzle 21 arranged near the first end thereof and a second nozzle 22 arranged near the second end thereof, and the side walls of the first nozzle 21 and the second nozzle 22 both begin to have spray holes for water flow spraying, and the aperture of the spray hole on the first nozzle 21 is larger than the aperture of the spray hole on the second nozzle 22. The aperture of the spray hole on the first nozzle 21 is larger than the aperture of the spray hole on the second nozzle 22, which not only controls the different water output of the two nozzles, but also controls the rotation speed and jet height of the nozzles through the different water output, so that the spray arm body and the nozzles at both ends can take into account a larger cleaning area and cleaning intensity, thereby improving the overall cleaning effect.

[0028] The first nozzle 21 is provided with a first spray hole 211, and the second nozzle 22 is provided with a second spray hole 221. The aperture of the first spray hole 211 is R, and the aperture of the second spray hole 221 is r, R = (1.05-1.2) r, preferably R = 1.1 r. With the above structure, on the premise that the number of the first spray hole 211 and the second spray hole 221 is the same, it is convenient to adjust the spray water volume, spray height and rotation speed of the first nozzle 21 and the second nozzle 22 as needed, so as to further meet different cleaning needs.

[0029] The number of the first spray holes 211 is equal to the number of the second spray holes 221. There are four first spray holes 211 and four second spray holes 221, which are arranged at intervals and extend obliquely in the circumferential direction of the corresponding nozzles. The first spray holes 211 and the second spray holes 221 have the same inclination trend in the circumferential direction of the nozzles. The above structure is conducive to making the nozzle rotate more stably relative to the body.

[0030] An axis L is formed between the two first spray holes 211 and the second spray holes 221. The other two first spray holes 211 and the second spray holes 221 are symmetrically arranged on both sides of the axis L and the acute angle a formed with the axis L is 5 to 10 degrees. The acute angle b formed between the axis center line of the first spray hole 211 and the second spray hole 221 and the horizontal plane is 35 to 55 degrees. The above structure 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 jamming problem.

[0031] In order to facilitate assembly, a water outlet 15 is provided on the top wall of the body 1, and a water inlet sleeve 16 is provided on the bottom wall of the nozzle, which extends downward and is rotatably connected to the water outlet 15. The lower end of the water inlet sleeve 16 is provided with a clamping edge 161 that can be clamped and limited with the inner top wall of the body 1, and the outer surface of the water inlet sleeve 16 is provided with a limiting groove 162 for clamping the edge of the water outlet 15 therein, and the limiting groove 162 is rotatably matched with the edge of the water outlet 15 of the body 1. The above structure is conducive to improving the rotational sealing between the nozzle and the body 1 to avoid water leakage while improving the rotational stability of the nozzle.

[0032] The outer wall of the water inlet sleeve 16 within the limiting groove 162 is provided with elastic ribs 163 arranged along the circumferential direction and capable of elastic sealing and rotational cooperation with the inner wall of the water outlet 15. The water inlet sleeve 16 can be made of hard plastic integrally formed with the nozzle, while the elastic ribs are made of silicone material with better elasticity and softness. The elastic ribs 163 can be welded within the limiting groove 162. With the above structure, while further improving the sealing between the nozzle and the water outlet 15 and avoiding water leakage, the elastic force of the elastic ribs can be used to balance and self-regulate the force on the circumferential direction of the nozzle, thereby improving the rotation stability of the nozzle and avoiding jamming.

[0033] 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.

[0034] In this embodiment, a first nozzle 21 and a second nozzle 22 are respectively arranged near the two ends of the main body 1. The spray holes on each nozzle rotate with the main body 1 and rotate on its own, which can expand the cleaning area. At the same time, the aperture of the spray hole on the first nozzle 21 is larger than the aperture of the spray hole on the second nozzle 21. This not only controls the different water outputs of the two nozzles, but also controls the rotation speed and jet height of the nozzles through the different water outputs, so that the spray arm main body and the nozzles at both ends can take into account a larger cleaning area and cleaning intensity, thereby improving the overall cleaning effect.

[0035] 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 arranged on the body (1) in a disc shape, characterized in that: The top of the body (1) is provided with a first nozzle (21) arranged near its first end and a second nozzle (22) arranged near its second end, and the side walls of the first nozzle (21) and the second nozzle (22) both have spray holes for spraying water, and the diameter of the spray hole on the first nozzle (21) is larger than the diameter of the spray hole on the second nozzle (22).

2. The spray arm for a cleaning machine according to claim 1, characterized in that: The first nozzle (21) is provided with a first spray hole (211), and the second nozzle (22) is provided with a second spray hole (221); the aperture of the first spray hole (211) is R, and the aperture of the second spray hole (221) is r, where R=(1.05-1.2)r.

3. The spray arm for a cleaning machine according to claim 2, characterized in that: R＝1.1r。 4. The spray arm for a cleaning machine according to claim 2, characterized in that: The number of the first spray holes (211) is equal to the number of the second spray holes (221); there are at least two of the first spray holes (211) / the second spray holes (221), which are arranged at intervals and extend obliquely in the circumferential direction of the corresponding nozzle; and the inclination trends of the first spray holes (211) / the second spray holes (221) in the circumferential direction of the nozzle are consistent.

5. The spray arm for a cleaning machine according to claim 2, characterized in that: There are four first spray holes (211) / second spray holes (221), and an axis L is formed between two of the first spray holes (211) / second spray holes (221). The other two first spray holes (211) / second spray holes (221) are symmetrically arranged on both sides of the axis L and form an acute angle of 5 to 10 degrees with the axis L.

6. The spray arm for a cleaning machine according to claim 5, characterized in that: The acute angle formed between the axis of the first spray hole (211) / the second spray hole (221) and the horizontal plane is 35 to 55 degrees.

7. The spray arm for a cleaning machine according to any one of claims 1 to 6, characterized in that: A water outlet (15) is provided on the top wall of the body (1), and a water inlet sleeve (16) extending downward and rotatably connected to the water outlet (15) is provided on the bottom wall of the nozzle.

8. The spray arm for a cleaning machine according to claim 7, characterized in that: The lower end of the water inlet sleeve (16) is provided with a clamping edge (161) capable of clamping and limiting with the inner top wall of the main body (1), and the outer surface of the water inlet sleeve (16) is provided with a limiting groove (162) for clamping the edge of the water outlet (15) therein, and the limiting groove (162) is rotatably matched with the edge of the water outlet (15) of the main body (1).

9. The spray arm for a cleaning machine according to claim 8, characterized in that: The outer wall of the water inlet sleeve (16) within the limiting groove (162) is provided with elastic ribs (163) arranged along the circumferential direction and capable of elastically sealing and rotatably cooperating with the inner wall of the water outlet (15).

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.

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