Spraying arm for cleaning machine and cleaning machine

Abstract

The utility model relates to a spraying arm for a cleaning machine and the cleaning machine, the spraying arm comprises a body, the body is internally provided with a water collecting cavity and a gas collecting cavity located above the water collecting cavity, the bottom wall of the body is provided with a water inlet communicated with the water collecting cavity, and the top wall of the body is provided with a nozzle communicated with the gas collecting cavity. The water collecting cavity is communicated with the gas collecting cavity through a spraying hole, a water outlet hole communicated with the gas collecting cavity is formed in the position, corresponding to the gas collecting cavity, of the side wall of the body, and the water outlet hole is located on the lower portion of the gas collecting cavity. When the spraying arm rotates, water in the gas collecting cavity is dispersed by centrifugal force along with rotation of the spraying arm, flows to the peripheral edge and then flows out of the water outlet holes, no residual water exists in the gas collecting cavity, and the sanitation problem caused by water remaining in the spraying arm is prevented.

Description

Technical Field

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

[0002] As people's living standards continue to improve, dishwashers, as a kitchen appliance, are increasingly entering households. Currently, dishwashers on the market are generally divided into three types: desktop, cabinet, and tank. Among them, desktop dishwashers are integrated independent structures and are generally placed on the table for use; cabinet dishwashers are also independent structures, but need to be embedded in the cabinet for use; tank dishwashers are combined with the sink and are generally installed in the kitchen cabinet for use.

[0003] The various forms of dishwashers mentioned above generally use a water pump to lift water and spray it onto the dishes in the cleaning space through a spray arm to achieve the cleaning effect. For example, the Chinese utility model patent with patent number CN202120988557.6 (publication number CN216776997U) discloses "Spray arm for cleaning machine and cleaning machine using the spray arm". The spray arm includes a body, which has a flow channel extending along the length of the body. The bottom wall of the body is provided with a water inlet connected to the flow channel, and the top wall is provided with a water spray hole. A plurality of water spray holes corresponding to the corresponding flow channel are respectively arranged on both sides of the water inlet, and the inner diameters of at least some of the water spray holes are unequal; an air filling structure is arranged on the top of the spray arm. A top plate is provided on the top of the main body, and the bottom wall of the top plate and the top wall of the main body together enclose an air collecting chamber for storing gas, the water spray holes are distributed in an area corresponding to the air collecting chamber, the nozzles are provided on the top plate and arranged 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, and the gap constitutes the air suction area, and the top plate, the air collecting chamber and the nozzle together constitute the aeration structure.

[0004] However, water is likely to remain in the air collecting chamber, and the water may be mixed with garbage. If the water is not drained clean, it may contaminate the spray arm and cause the spray arm to produce odor. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide a spray arm for a cleaning machine which is convenient for a gas collecting chamber to drain water in view of the current status of the prior art.

[0006] 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.

[0007] The technical solution adopted by the utility model to solve the first technical problem mentioned above is: a spray arm for a cleaning machine, comprising a main body, wherein the main body has a water collecting chamber and an air collecting chamber located above the water collecting chamber, a water inlet connected to the water collecting chamber is provided on the bottom wall of the main body, a nozzle connected to the air collecting chamber is provided on the top wall of the main body, the water collecting chamber and the air collecting chamber are connected through a spray hole, and it is characterized in that: a water outlet connected to the air collecting chamber is provided on the side wall of the main body at a position corresponding to the air collecting chamber, and the water outlet is located at the lower part of the air collecting chamber.

[0008] In order to facilitate water to flow toward the water outlet, the bottom wall of the air collecting cavity is inclined downward from the center to the edge, so that the bottom wall of the air collecting cavity can also play a role in guiding water, and water will flow toward the water outlet along the inclined surface.

[0009] In order to further facilitate water to flow to the water outlet, a guide rib is provided on the bottom wall of the air collecting cavity, and the end of the guide rib is connected to the side wall of the body and is located at the water outlet, so that water will flow along the guide rib to the water outlet.

[0010] In order to allow the air flow to enter the air collecting chamber and mix with the water flow, the spray hole and the nozzle are arranged correspondingly, and there is a gap between the upper end of the spray hole and the lower end of the nozzle, and the gap constitutes an air suction area. The water outlet hole also serves as an air inlet hole. The structure is simple and compact. The water outlet hole can discharge the water in the air collecting chamber to achieve no residual water in the air collecting chamber, and secondly, it plays the role of air intake.

[0011] In order to prevent water from remaining on the top wall of the body and allow water to flow away quickly from the top wall of the body, the top wall of the body is inclined downward from the center to the edge, and the top wall of the body plays a role in guiding water, allowing water to flow downward under the action of gravity.

[0012] Specifically, the main body is strip-shaped, and a convex rib extending along the length direction of the main body is formed on the top wall surface of the main body, and the convex rib separates the top wall surface of the main body along the width direction. The wall surface on the main body between the convex rib and the long side of the top wall of the main body is inclined downward from the convex rib to the long side of the top wall of the main body to form a first inclined surface, and water flows along the first inclined surface under the action of gravity.

[0013] In order to improve the aesthetics of the spray arm, the cross-sections of the two end walls of the body are arc-shaped surfaces that arch away from the central part of the body.

[0014] In order to further enable water to flow away quickly from the top wall of the body, there is a gap between the two ends of the convex rib and the end wall of the body on the corresponding side, and the top wall surface of the body adjacent to the two ends is inclined downward from the two ends of the convex rib toward the end wall of the body on the corresponding side to form a second inclined surface. In this way, water can also flow along the second inclined surface.

[0015] In order to ensure that there is no residual water in the water collecting chamber when the spray arm is not in use, the water inlet is arranged in the middle of the main body, and the bottom wall of the water collecting chamber is inclined downward from the edge of the water collecting chamber to the water inlet to form a third inclined surface, so that water flows along the third inclined surface to the water inlet and is discharged from the water collecting chamber.

[0016] In order to further make the water flow toward the water inlet and achieve no residual water in the water collecting chamber, a guide strip extending from the edge of the water collecting chamber toward the water inlet is provided on the bottom wall of the water collecting chamber, and the guide strip plays a role in guiding the water.

[0017] Preferably, a residue sweeping hole connected to the water collecting chamber is provided on the bottom wall of the main body so as to sweep away residues in a special position in the washing chamber.

[0018] In order to form the above-mentioned water collecting chamber and air collecting chamber, the main body includes an upper shell, a middle shell and a lower shell which are arranged and connected in sequence from top to bottom, the upper shell and the middle shell form the air collecting chamber, the middle shell and the lower shell form the water collecting chamber, the nozzle is arranged on the top wall of the upper shell, the water inlet is arranged on the bottom wall of the lower shell, the spray hole is arranged on the bottom wall of the middle shell, and the water outlet is located at the bottom of the side wall of the middle shell.

[0019] Preferably, there are a plurality of water outlet holes, which are sequentially spaced apart along the circumference of the side wall of the middle shell, so that the drainage rate is high.

[0020] The technical solution adopted by the utility model to solve the second technical problem is: a cleaning machine, characterized in that it includes a box body with a washing chamber and the above-mentioned spray arm, and the spray arm is arranged in the washing chamber.

[0021] Compared with the prior art, the utility model has the following advantages: the utility model provides an air outlet connected to the air collecting chamber on the main body. When the spray arm rotates, the water in the air collecting chamber is dispersed by centrifugal force as the spray arm rotates, flows to the edges on all sides, and then flows out from the water outlet, so that there is no residual water in the air collecting chamber, preventing water from remaining in the spray arm and causing hygiene problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0023] Figure 2 for Figure 1 A cross-sectional view of

[0024] Figure 3 for Figure 1 Schematic diagram of the decomposition. DETAILED DESCRIPTION

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

[0026] like Figures 1 to 3As shown, the cleaning machine of this preferred embodiment includes a box body and a spray arm. The box body has a washing chamber, and the spray arm is arranged in the washing chamber. This is the prior art and will not be described in detail here.

[0027] The spray arm includes a main body 1, which has a water collecting chamber 11 and an air collecting chamber 12 located above the water collecting chamber 11. A water inlet 13 connected to the water collecting chamber 11 is provided on the bottom wall of the main body 1, and a nozzle 14 connected to the air collecting chamber 12 is provided on the top wall of the main body 1. The water collecting chamber 11 and the air collecting chamber 12 are connected through a spray hole 15. A water outlet hole 16 is provided on the side wall of the main body 1 at a position corresponding to the air collecting chamber 12. The water outlet hole 16 is located at the lower part of the air collecting chamber 12, and the water outlet hole 16 is connected to the air collecting chamber 12.

[0028] In this embodiment, the main body 1 includes an upper shell 2, a middle shell 3 and a lower shell 4 which are arranged and connected in sequence from top to bottom. The upper shell 2 and the middle shell 3 form an air collecting chamber 12, and the middle shell 3 and the lower shell 4 form a water collecting chamber 11. The nozzle 14 is arranged on the top wall of the upper shell 2, the water inlet 13 is arranged on the bottom wall of the lower shell 4, the spray hole 15 is arranged on the bottom wall of the middle shell 3, and the water outlet 16 is located at the bottom of the side wall of the middle shell 3. When the spray arm rotates, the water in the air collecting chamber 12 is dispersed by centrifugal force as the spray arm rotates, flows to the surrounding edges, and then flows out from the water outlet 16, so that there is no residual water in the air collecting chamber 12, and water is prevented from remaining in the spray arm to cause hygiene problems. There are multiple water outlet holes 16, which are arranged in sequence along the circumferential direction of the side wall of the middle shell 3, so that the drainage rate is high.

[0029] The spray hole 15 and the nozzle 14 are arranged correspondingly, and there is a gap between the upper end of the spray hole 15 and the lower end of the nozzle 14, and the gap constitutes an air suction area. This is the prior art; in the present embodiment, the water outlet hole 16 also serves as an air inlet hole. On the one hand, it can discharge the water in the air collecting chamber 12 to achieve no residual water in the air collecting chamber 12. On the other hand, it plays the role of air intake, so that the air flow enters the air collecting chamber 12 and mixes with the water flow to form a cavitation water column, which has a good cleaning effect.

[0030] The top wall of the main body 1 slopes downward from the center to the edge, and the top wall of the main body 1 plays a role in guiding water, allowing water to flow downward under the action of gravity, preventing water from remaining on the top wall of the main body 1, so that water can flow away quickly from the top wall of the main body 1.

[0031] Specifically, the main body 1 is strip-shaped, and a convex rib 21 extending along the length direction of the main body 1 is formed on the top wall surface of the main body 1 (i.e., the top wall surface of the upper shell 2), and the convex rib 21 separates the top wall surface of the main body 1 along the width direction. The wall surface on the main body 1 located between the convex rib 21 and the long side of the top wall of the main body 1 is a first inclined surface 22. The first inclined surface 22 is inclined downward from the convex rib 21 to the long side of the top wall of the main body 1, and water flows along the first inclined surface 22 under the action of gravity.

[0032] The cross-section of the two end walls of the body 1 is an arcuate surface 17 that arches away from the central part of the body 1, so that the spray arm has a good appearance. There is a gap between the two ends of the rib 21 and the end wall of the body 1 on the corresponding side. The top wall surface of the body 1 near the two ends is a second inclined surface 23, and the second inclined surface 23 is inclined downward from the two ends of the rib 21 toward the end wall on the corresponding side of the body 1. In this way, water can also flow along the second inclined surface 23, so that the water quickly flows away from the top wall of the body 1.

[0033] The bottom wall of the air collecting chamber 12 slopes downward from the center to the edge, and water flows along the slope toward the water outlet 16. The specific inclination of the bottom wall of the air collecting chamber 12 and the inclination of the top wall of the body 1 are not repeated here.

[0034] In order to further facilitate water to flow to the water outlet 16, a guide rib 5 is provided on the bottom wall of the air collecting chamber 12. The end of the guide rib 5 is connected to the side wall of the main body 1 and is located at the water outlet 16, so that water will flow along the guide rib 5 to the water outlet 16.

[0035] The water inlet 13 is arranged in the middle part of the main body 1, and the bottom wall surface of the water collecting chamber 11 (that is, the upper surface of the bottom wall of the lower shell 4) is inclined downward from the edge of the water collecting chamber 11 to the water inlet 13 to form a third inclined surface 41, so that when the spray arm is not in use, water flows along the third inclined surface 41 to the water inlet 13, and is discharged from the water collecting chamber 11, so that there is no residual water in the water collecting chamber 11; more preferably, a guide strip 42 is provided on the bottom wall surface of the water collecting chamber 11, which extends from the edge of the water collecting chamber 11 toward the water inlet 13, and the guide strip 42 has a function of guiding water.

[0036] In addition, a residue sweeping hole 43 communicating with the water collecting chamber 11 is provided on the bottom wall of the main body 1 (ie, the bottom wall of the lower shell 4) to sweep away residues in a specific position in the washing chamber.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration 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.

[0038] The "fluid communication" referred to in the present invention refers to the spatial position relationship between two parts or parts (hereinafter collectively referred to as the first part and the second part), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, duct, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A spray arm for a cleaning machine, comprising a body (1), wherein the body (1) has a water collecting chamber (11) and an air collecting chamber (12) located above the water collecting chamber (11), a water inlet (13) connected to the water collecting chamber (11) is provided on the bottom wall of the body (1), a nozzle (14) connected to the air collecting chamber (12) is provided on the top wall of the body (1), the water collecting chamber (11) and the air collecting chamber (12) are connected via a spray hole (15), and the characteristics are: A water outlet hole (16) connected to the gas collecting cavity (12) is provided on the side wall of the body (1) at a position corresponding to the gas collecting cavity (12); the water outlet hole (16) is located at the lower part of the gas collecting cavity (12).

2. The spray arm according to claim 1, characterized in that: The bottom wall surface of the gas collecting cavity (12) slopes downward from the center to the edge.

3. The spray arm according to claim 2, characterized in that: A flow guiding rib (5) is provided on the bottom wall of the gas collecting cavity (12), and the end of the flow guiding rib (5) is connected to the side wall of the body (1) and is located at the water outlet hole (16).

4. The spray arm according to claim 1, characterized in that: The spray hole (15) and the nozzle (14) are arranged correspondingly, and there is a gap between the upper end of the spray hole (15) and the lower end of the nozzle (14), and the gap constitutes an air suction area. The water outlet hole (16) also serves as an air inlet hole.

5. The spray arm according to claim 1, characterized in that: The top wall surface of the main body (1) slopes downward from the center to the edge.

6. The spray arm according to claim 5, characterized in that: The body (1) is strip-shaped, and a convex rib (21) extending along the length direction of the body (1) is formed on the top wall surface of the body (1), and the convex rib (21) divides the top wall surface of the body (1) along the width direction. The wall surface of the body (1) between the convex rib (21) and the long side of the top wall of the body (1) is inclined downward from the convex rib (21) to the long side of the top wall of the body (1) to form a first inclined surface (22).

7. The spray arm according to claim 6, characterized in that: The cross-sections of the two end walls of the main body (1) are arcuate surfaces (17) that arch toward a central portion away from the main body (1).

8. The spray arm according to claim 7, characterized in that: There is a distance between the two ends of the convex rib (21) and the end wall of the body (1) on the corresponding side, and the top wall surface of the body (1) adjacent to the two ends is inclined downward from the two ends of the convex rib (21) toward the end wall on the corresponding side of the body (1) to form a second inclined surface (23).

9. The spray arm according to any one of claims 1 to 8, characterized in that: The bottom wall surface of the water collecting chamber (11) slopes downward from the edge of the water collecting chamber (11) toward the water inlet (13) to form a third inclined surface (41).

10. The spray arm according to claim 9, characterized in that: A guide strip (42) extending from the edge of the water collecting chamber (11) towards the water inlet (13) is provided on the bottom wall surface of the water collecting chamber (11).

11. The spray arm according to any one of claims 1 to 8, characterized in that: The bottom wall of the body (1) is provided with a slag sweeping hole (43) which is in communication with the water collecting chamber (11).

12. The spray arm according to any one of claims 1 to 8, characterized in that: The body (1) comprises an upper shell (2), a middle shell (3) and a lower shell (4) which are arranged in sequence and connected from top to bottom; the upper shell (2) and the middle shell (3) form the air collecting chamber (12); the middle shell (3) and the lower shell (4) form the water collecting chamber (11); the nozzle (14) is arranged on the top wall of the upper shell (2); the water inlet (13) is arranged on the bottom wall of the lower shell (4); the spray hole (15) is arranged on the bottom wall of the middle shell (3); and the water outlet hole (16) is located at the bottom of the side wall of the middle shell (3).

13. The spray arm according to claim 12, characterized in that: There are a plurality of water outlet holes (16), which are arranged in sequence and at intervals along the circumferential direction of the side wall of the middle shell (3).

14. A cleaning machine, characterized in that: The invention comprises a box body having a washing chamber and a spray arm as claimed in any one of claims 1 to 13, wherein the spray arm is arranged in the washing chamber.

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