Spraying arm for cleaning machine and cleaning machine

Abstract

The spraying arm comprises a body with a flow channel, the body is provided with a water inlet and a water outlet hole which are communicated with the flow channel, the edge of the water outlet hole extends outwards to form a nozzle for a water column to be ejected out, and the water column is provided with a water inlet and a water outlet hole which are communicated with the flow channel. And the side wall of the nozzle is locally penetrated inside and outside to form a notch for air to enter the nozzle and be mixed into the water column. According to the utility model, an air collection cavity layer does not need to be arranged, but the notch is directly formed in the side wall of the nozzle used for ejecting a water column, and in the jet flow process, external air is sucked into the water column through the notch along with the ejection of the water column, so that the water column carrying bubbles is generated, the structure is greatly simplified, the thickness of the spraying arm is reduced on the whole, and the production efficiency is improved. The occupied space of the spraying arm can be saved; and meanwhile, as a gas collection cavity layer is not needed, the spraying arm is more convenient to produce and manufacture, and the production cost is reduced.

Description

Technical Field

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

[0002] At present, dishwashers are widely used in home kitchens. The applicant's prior patent ZL202221538422.0 "Spray arm, water pump mechanism and cleaning machine" discloses a structure, which includes a body and a top plate, the body has a flow channel extending along the length direction of the body, the bottom wall of the body is provided with a water inlet connected to the flow channel, the top wall and / or the side wall are provided with a water spray hole, the top plate is arranged on the body and together with the body, a gas collecting chamber for storing gas is enclosed, the water spray holes are distributed in the area corresponding to the gas collecting chamber, the top plate is provided with nozzles corresponding to the water spray holes, and there is a gap between the upper end of the water spray hole and the lower end of the nozzle that can generate negative pressure during the water flow spraying process, the edge of the top plate is provided with a first surrounding edge extending downward, and correspondingly, the upper surface of the body is provided with a second surrounding edge extending upward, the first surrounding edge and the second surrounding edge are connected to each other to form a side wall enclosing the gas collecting chamber, and the side wall is provided with an air inlet for air to enter the gas collecting chamber.

[0003] The above-mentioned spray arm can be provided with an air collecting chamber layer and a flow channel layer arranged at intervals in the upper and lower parts, and can use the Venturi effect to absorb air into the water column during the jet process, so that the water column carries bubbles and improves the cleaning effect. However, the independent air collecting chamber layer makes the overall thickness of the spray arm larger, and it takes up more space; and this type of spray arm usually needs to fuse or weld three layers of wall materials together during production, which makes the production process more complicated and the production cost high. Utility Model Content

[0004] The first technical problem to be solved by the utility model is to provide a spray arm for a cleaning machine which can reduce the overall thickness and thus reduce the occupied space in view of the current status of the prior art.

[0005] The second technical problem to be solved by the utility model is to provide a spray arm for a cleaning machine which is easy to manufacture and thus reduces production costs in view of the current status of the prior art.

[0006] The third 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.

[0007] The technical solution adopted by the utility model to solve at least one of the above technical problems is:

[0008] A spray arm for a cleaning machine comprises a body with a flow channel, the body is provided with a water inlet and a water outlet connected to the flow channel, the edge of the water outlet extends outward to form a nozzle for ejecting a water column, and a part of the side wall of the nozzle penetrates inside and outside to form a gap for air to enter the nozzle and mix into the water column.

[0009] The utility model does not need to set up an air collecting chamber layer, but directly opens a gap on the side wall of the nozzle used to eject the water column. During the jetting process, as the water column is ejected, the outside air is sucked into the water column through the gap, thereby generating a water column carrying bubbles. The utility model greatly simplifies the structure and reduces the thickness of the spray arm as a whole, which is beneficial to saving the space occupied by the spray arm. At the same time, since there is no need to set up an air collecting chamber layer, the production and manufacturing of the spray arm is more convenient, which is beneficial to reducing production costs.

[0010] Preferably, the nozzle includes a first section and a second section connected along the water flow direction, the inner diameter of the first section is smaller than the inner diameter of the second section, and the notch is provided on the second section. With the above structure, it is convenient to provide a space for the water column ejected through the first section to mix with the air at the second section, so that the air can be mixed into the water column more evenly, thereby improving the bubble generation effect.

[0011] Preferably, a step surface arranged along the circumference of the nozzle is formed between the first section and the second section, the lower edge of the notch is arranged close to the step surface, and the notch is located above the step surface. Providing the notch here is conducive to further improving the gas mixing effect.

[0012] Preferably, the cross sections of the first section and the second section are coaxially arranged. This structure is conducive to maintaining the spray head and aeration effect of the water column.

[0013] Preferably, the inner diameter of the first section is r, the inner diameter of the second section is R, and R=(1.2-2)r.

[0014] In the utility model, the body includes an upper shell and a lower shell, the edges of the upper shell and the lower shell are welded together to enclose the flow channel, the water inlet is opened in the lower shell, and the water outlet is opened in the upper shell. The existing spray arm usually needs to weld or weld three layers of wall materials together during production, which has a relatively complex production process and high production cost. With the above structure, only the upper and lower shells need to be welded or welded, saving the upper wall material and a connection process, greatly reducing the production difficulty and manufacturing cost.

[0015] Preferably, a first convex rib extending downward is provided at the edge of the upper shell, and correspondingly, a second convex rib extending upward is provided at the edge of the lower shell, and the first convex rib and the second convex rib are butted against each other. This structure is conducive to improving the flow channel sealing of the spray arm.

[0016] Preferably, the lower surface of the upper shell is provided with a third rib extending downward near the edge, and correspondingly, the upper surface of the lower shell is provided with a fourth rib extending upward near the edge, and the third rib and the fourth rib are welded together. This structure is conducive to improving the flow channel sealing of the spray arm.

[0017] Preferably, the first convex rib and the second convex rib are butted against each other to enclose an outer ring, the third convex rib and the fourth convex rib are welded together to form an inner ring, and a sealed cavity is formed between the outer ring and the inner ring. This structure is conducive to further improving the flow channel sealing of the spray arm.

[0018] A cleaning machine comprises a box body and the spray arm, wherein the spray arm is rotatably arranged in the box body.

[0019] Compared with the prior art, the utility model has the following advantages: the utility model does not need to set up an air collecting chamber layer, but directly opens a gap on the side wall of the nozzle for ejecting a water column. During the jetting process, as the water column is ejected, the outside air is sucked into the water column through the gap, thereby generating a water column carrying bubbles. The utility model greatly simplifies the structure and reduces the thickness of the spray arm as a whole, which is beneficial to saving the space occupied by the spray arm. At the same time, since there is no need to set up an air collecting chamber layer, the production and manufacturing of the spray arm is more convenient, which is beneficial to reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the spray arm of an embodiment of the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the bottom structure;

[0022] Figure 3 A cross-sectional view of an embodiment of the utility model;

[0023] Figure 4 It is a partial cross-sectional view of an embodiment of the utility model. DETAILED DESCRIPTION

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

[0025] like Figures 1 to 4 As shown, the spray arm for a cleaning machine in this embodiment includes a main body 1 having a flow channel 11, the main body 1 is provided with a water inlet 12 and a water outlet 13 connected to the flow channel 11, the edge of the water outlet 13 extends outward to form a nozzle 14 for ejecting a water column, and a part of the side wall of the nozzle 14 penetrates inside and outside to form a notch 140 for air to enter the nozzle 14 and mix into the water column.

[0026] Specifically, the nozzle 14 includes a first section 141 and a second section 142 connected along the water flow direction, the inner diameter of the first section 141 is smaller than the inner diameter of the second section 142, and the notch 140 is provided on the second section 142. With the above structure, it is convenient to provide a space for the water column ejected through the first section 141 to mix with the air at the second section 142, so that the air can be mixed into the water column more evenly, thereby improving the bubble generation effect.

[0027] A step surface 143 arranged along the circumference of the nozzle 14 is formed between the first section 141 and the second section 142, and the lower edge of the notch 140 is arranged close to the step surface 143, and the notch 140 is located above the step surface 143. Providing the notch 140 here is conducive to further improving the gas mixing effect.

[0028] The inner diameter of the first section 141 is r, and the inner diameter of the second section 142 is R, where R = (1.2-2) r. The cross sections of the first section 141 and the second section 142 are coaxially arranged, and this structure is conducive to maintaining the spray head and aeration effect of the water column.

[0029] In this embodiment, the body 1 includes an upper shell 15 and a lower shell 16, the edges of the upper shell 15 and the lower shell 16 are welded together to enclose the flow channel 11, the water inlet 12 is opened in the central part of the lower shell 15, and the water outlet holes 13 are multiple and spaced apart on the upper shell 15. The existing spray arm usually needs to weld or weld three layers of wall materials together during production, and the production process is relatively complicated and the production cost is high. With the above structure, only the upper and lower shells need to be welded or welded, which saves the upper wall material and a connection process, and greatly reduces the production difficulty and manufacturing cost.

[0030] The edge of the upper shell 15 is provided with a first rib 151 extending downward, and correspondingly, the edge of the lower shell 16 is provided with a second rib 161 extending upward, and the first rib 151 and the second rib 161 are butted against each other. This structure is conducive to improving the flow channel sealing of the spray arm. The lower surface of the upper shell 15 is provided with a third rib 152 extending downward near the edge, and correspondingly, the upper surface of the lower shell 16 is provided with a fourth rib 162 extending upward near the edge, and the third rib 152 and the fourth rib 162 are welded together. This structure is conducive to improving the flow channel sealing of the spray arm.

[0031] The first convex rib 151 and the second convex rib 161 are connected to each other to form an outer circle, the third convex rib 152 and the fourth convex rib 162 are welded to form an inner circle, and a sealing cavity 17 is formed between the outer circle and the inner circle. This structure is conducive to further improving the flow channel sealing of the spray arm.

[0032] The cleaning machine of this embodiment includes a box body and the above-mentioned spray arm, which is rotatably arranged in the box body. The spray arm of this embodiment is circular, but in fact the shape of the spray arm is not limited to circular, and can be set into various shapes as needed; the spray arm of this embodiment can also be rotatably arranged on the main spray arm of the cleaning machine as an auxiliary spray arm.

[0033] The present embodiment does not need to set up an air collecting chamber layer, but directly opens a notch 140 on the side wall of the nozzle 14 for ejecting a water column. During the jetting process, as the water column is ejected, the outside air is sucked into the water column through the notch 140, thereby generating a water column carrying bubbles. The present embodiment greatly simplifies the structure and reduces the thickness of the spray arm as a whole, which is beneficial to saving the space occupied by the spray arm. At the same time, since there is no need to set up an air collecting chamber layer, the production and manufacturing of the spray arm is more convenient, which is beneficial to reducing production costs.

[0034] 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) having a flow channel (11), the body (1) being provided with a water inlet (12) and a water outlet (13) connected to the flow channel (11), characterized in that: The edge of the water outlet (13) extends outward to form a nozzle (14) for the water column to be ejected, and a part of the side wall of the nozzle (14) penetrates inside and outside to form a notch (140) for air to enter the nozzle (14) and mix into the water column.

2. The spray arm for a cleaning machine according to claim 1, characterized in that: The nozzle (14) comprises a first section (141) and a second section (142) connected along the water flow direction, the inner diameter of the first section (141) is smaller than the inner diameter of the second section (142), and the notch (140) is provided on the second section (142).

3. The spray arm for a cleaning machine according to claim 2, characterized in that: A step surface (143) arranged along the circumference of the nozzle (14) is formed between the first section (141) and the second section (142); the lower edge of the notch (140) is arranged close to the step surface (143); and the notch (140) is located above the step surface (143).

4. The spray arm for a cleaning machine according to claim 2, characterized in that: The first section (141) and the second section (142) are coaxially arranged in cross section.

5. The spray arm for a cleaning machine according to claim 2, characterized in that: The inner diameter of the first section (141) is r, and the inner diameter of the second section (142) is R, where R=(1.2 ~ 2)r.

6. The spray arm for a cleaning machine according to any one of claims 1 to 5, characterized in that: The main body (1) comprises an upper shell (15) and a lower shell (16); the edges of the upper shell (15) and the lower shell (16) are welded together to enclose the flow channel (11); the water inlet (12) is provided in the lower shell (16); and the water outlet (13) is provided in the upper shell (15).

7. The spray arm for a cleaning machine according to claim 6, characterized in that: A first convex rib (151) extending downward is provided at the edge of the upper shell (15), and correspondingly, a second convex rib (161) extending upward is provided at the edge of the lower shell (16), and the first convex rib (151) and the second convex rib (161) are butted against each other.

8. The spray arm for a cleaning machine according to claim 7, characterized in that: The lower surface of the upper shell (15) is provided with a third rib (152) extending downward near the edge, and correspondingly, the upper surface of the lower shell (16) is provided with a fourth rib (162) extending upward near the edge, and the third rib (152) and the fourth rib (162) are welded together.

9. The spray arm for a cleaning machine according to claim 8, characterized in that: The first convex rib (151) and the second convex rib (161) are butted against each other to enclose an outer ring, the third convex rib (152) and the fourth convex rib (162) are welded together to form an inner ring, and a sealed cavity (17) is formed between the outer ring and the inner ring.

10. A cleaning machine, comprising a housing, characterized in that: It also includes the spray arm described in any one of claims 1 to 9, wherein the spray arm is rotatably disposed in the box.

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