Spraying arm for cleaning machine, shelf assembly and cleaning machine

Abstract

The utility model relates to a spraying arm for a cleaning machine, a shelf assembly and the cleaning machine, the spraying arm is provided with a spraying hole, the central part of the spraying hole is provided with a central shaft, the side of the central shaft is sequentially provided with at least two blades along the circumferential direction of the central shaft, each blade extends from the inside of the spraying arm to the outside of the spraying arm along the circumferential direction of the central shaft; the rotating directions of all the blades are the same, so that when water flow is sprayed out of the spraying holes, water columns are diverged due to the flow guiding effect of the blades, and cleaning in a larger range is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cleaning machine for cleaning tableware and / or fruits and vegetables, and particularly relates to a spraying arm for a cleaning machine, a shelf assembly and the cleaning machine. BACKGROUND

[0002] With the improvement of living standards, users have higher and higher requirements for the loading capacity of the bowl basket of the dishwasher, and require that the bowl basket can hold more tableware. For example, a Chinese utility model patent with the patent number CN202321324742.0 (publication number CN219846438U) discloses a cleaning machine, which comprises a box body, a washing cavity with an open front side, a tableware rack assembly arranged in the washing cavity, and the tableware rack assembly comprises a top layer tableware rack, a middle layer tableware rack and a lower layer tableware rack arranged in sequence and spaced apart from top to bottom. The top layer tableware rack is used to hold cutlery such as knives, forks and chopsticks, and the middle layer tableware rack and the lower layer tableware rack are used to hold larger-sized tableware.

[0003] In addition, the patent designs the following waterway system for the three-layer tableware rack: an upper spraying arm is rotatably arranged above the top layer tableware rack, a first water spraying hole is formed in the bottom wall of the upper spraying arm; a middle spraying arm is rotatably arranged between the middle layer tableware rack and the lower layer tableware rack, a second water spraying hole is formed in the top wall of the middle spraying arm; and a lower spraying arm is rotatably arranged below the lower layer tableware rack, a third water spraying hole is formed in the top wall of the lower spraying arm.

[0004] The tableware on the top layer tableware rack is mainly cleaned by the upper spraying arm on the upper part thereof, and there is a problem of dispersed water force, weak washing intensity and poor cleaning effect.

[0005] In addition, the water spraying holes on the spraying arm are mostly straight holes, which can only spray in one direction, and the water column is relatively concentrated, so that a larger cleaning range cannot be formed. Although the second water spraying hole of the middle spraying arm in the patent is designed as a strip-shaped hole, the strip-shaped hole is only arranged on both sides of the circular hole, and the divergence range of the water flow is limited. SUMMARY

[0006] The first technical problem to be solved by the utility model is to provide a spraying arm for a cleaning machine with a large divergence range of water flow in view of the status quo of the prior art.

[0007] The second technical problem to be solved by the utility model is to provide a shelf assembly for a cleaning machine using the above spraying arm in view of the status quo of the prior art.

[0008] The third technical problem to be solved by the utility model is to provide a cleaning machine using the above shelf assembly in view of the status quo of the prior art.

[0009] The technical solution adopted by this utility model to solve the first technical problem mentioned above is: a spray arm for a cleaning machine, characterized in that the spray arm is provided with spray holes, the central part of the spray holes has a central shaft, and at least two blades are arranged sequentially along the circumference of the central shaft on the side of the central shaft, each blade extending from the inside of the spray arm to the outside of the spray arm along the circumference of the central shaft, and all blades have the same rotation direction.

[0010] To increase the spray range, there are multiple spray holes, with at least two of them arranged in a row along the axial direction of the spray arm to form a spray hole group. The spray hole group can be one set or at least two sets spaced apart along the circumference of the spray arm.

[0011] The technical solution adopted by this utility model to solve the second technical problem mentioned above is as follows: a shelf assembly for a spray arm used in a cleaning machine, characterized in that it includes a frame, wherein a first shelf and a second shelf are arranged sequentially in the left-right direction, the first shelf is higher than the second shelf and the two are connected, the spray arm extends in the front-back direction and is installed on the frame, the spray arm is located directly below the first shelf and next to the second shelf, and the spray holes face the first shelf and / or the second shelf.

[0012] To facilitate water supply to the spray arm, one end of the spray arm is open as the water inlet, and the other end is closed as the closed end. The front and rear side walls of the frame are provided with mounting holes. The two ends of the spray arm are respectively installed in the two mounting holes, and the mounting holes in which the water inlet is placed are connected to the wall thickness of the corresponding side wall so that the water supply pipe can be connected to the spray arm.

[0013] To prevent the spray arm from rotating circumferentially relative to the mounting hole, at least one side wall of the frame is provided with a groove next to the mounting hole, and the spray arm is provided with a block that can be fitted into the groove; or, at least one side wall of the frame is provided with a block next to the mounting hole, and the spray arm is provided with a groove into which the block can be fitted. The cooperation between the block and the groove serves to limit the displacement of the spray arm in the circumferential direction.

[0014] Preferably, the spray arm is rotatable about its axis, and the closed end of the spray arm is provided with a knob that is easy for the user to hold and rotate. The knob is fixed relative to the spray arm in the circumferential direction. By rotating the knob, the spray arm can be rotated to adjust the spray angle of the nozzles to suit the washing of different tableware.

[0015] To connect the knob and the spray arm, the closed end of the spray arm is provided with a socket, the knob is provided with a plug that can be inserted into the socket, and the plug and the socket are connected by a connecting structure.

[0016] To position the spray arm after it has rotated to its correct position, the mounting hole for placing the closed end of the spray arm also extends through the wall thickness of the corresponding side wall. The knob is located on the outside of the frame, and at least two protrusions are spaced apart along the circumference of the spray arm on the knob. At least two slots are evenly spaced along the circumference of the mounting hole on the side wall of the frame, allowing the protrusions to be detachably placed within them. When the protrusions are engaged in the slots, the knob will not rotate without external force, because the knob and the spray arm are fixed relative to each other in the circumferential direction, thus preventing the spray arm from rotating.

[0017] The technical solution adopted by this utility model to solve the third technical problem mentioned above is: a cleaning machine, characterized in that it includes a box and the above-mentioned shelf assembly, wherein a water supply pipe is provided in the box and the water supply pipe is connected to the spray arm.

[0018] To further improve the cleaning effect on tableware, an upper spray arm is also provided above the shelf, which is also connected to the water supply pipe. The upper spray arm and the spray arm work together, one above the other, to achieve a better cleaning effect on the tableware on the shelf.

[0019] Compared with the prior art, the advantages of this utility model are: 1. By setting a central shaft in the nozzle and setting spirally extending blades on the central shaft, the water jet is dispersed due to the guiding effect of the blades when it is sprayed out of the nozzle, thus achieving a wider cleaning range.

[0020] 2. This utility model directly installs a spray arm on the shelf and designs the shelf as a first shelf and a second shelf at different heights. The spray arm is located below the first shelf and beside the second shelf. In this way, the spray arm can rinse the tableware on the two shelves at close range, with strong rinsing intensity, concentrated water force, and good cleaning effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0022] Figure 2 for Figure 1 A partial structural diagram;

[0023] Figure 3 for Figure 2 A partial structural diagram;

[0024] Figure 4 for Figure 3 A schematic diagram of the structure of the shelving assembly;

[0025] Figure 5 for Figure 4 A schematic diagram of the structure of the spray arm;

[0026] Figure 6 forFigure 4 A schematic diagram of the decomposition process;

[0027] Figure 7 This is a schematic diagram of the shelf assembly of Embodiment 2 of this utility model;

[0028] Figure 8 for Figure 7 A schematic diagram of the decomposition process;

[0029] Figure 9 for Figure 7 A sectional view;

[0030] Figure 10 for Figure 9 A schematic diagram of the knob in the diagram. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0032] Example 1

[0033] like Figures 1 to 6 As shown, the cleaning machine of this preferred embodiment includes a housing 1 and a shelf assembly. The shelf assembly includes a frame 2, in which a first shelf 3 and a second shelf 4 are arranged sequentially in the left-right direction. The first shelf 3 is higher than the second shelf 4 and the two are connected. A spray arm 5 extending in the front-back direction is installed on the frame 2. The spray arm 5 is located directly below the first shelf 3 and next to the second shelf 4. The spray arm 5 has a spray hole 51 that communicates with its interior.

[0034] like Figure 5 As shown, the spray arm 5 is provided with a spray hole 51. The central part of the spray hole 51 has a central shaft 55. At least two blades 56 are arranged in sequence along the circumference of the central shaft 55. Each blade 56 extends from the inside of the spray arm 5 to the outside of the spray arm 5 along the circumference of the central shaft 55. All blades 56 have the same rotation direction, so that the water supply channel in the spray hole 51 extends in a spiral shape.

[0035] As can be seen, the flow channel of the nozzle 51 of this application extends in a spiral shape. When the water is sprayed out of the nozzle 51, the water column is dispersed due to the guiding effect of the blade 56, thus achieving a wider cleaning range.

[0036] like Figure 3 , 4 As shown in Figure 6, one end of the spray arm 5 is open as the water inlet, and the other end is closed as the closed end. Mounting holes 21 are provided on both the front and rear side walls of the frame 2. The two ends of the spray arm 5 are respectively installed in the two mounting holes 21, with the mounting hole 21, where the water inlet is placed, penetrating the wall thickness of the corresponding side wall. A water supply pipe 6 is provided in the housing 1, and the water supply pipe 6 partially extends into the mounting hole 21 and connects to the spray arm 5.

[0037] In this embodiment, the frame 2, the first shelf 3, and the second shelf 4 are all plastic parts with a certain deformation allowance, which allows the spray arm 5 to be installed on them.

[0038] To prevent the spray arm 5 from rotating circumferentially relative to the mounting hole 21, at least one side wall of the frame 2 is provided with a groove 22 beside the mounting hole 21, and the spray arm 5 is provided with a block 52 that can be fitted into the groove 22; alternatively, at least one side wall of the frame 2 is provided with a block 52 beside the mounting hole 21, and the spray arm 5 is provided with a groove 22 into which the block 52 can be fitted. The cooperation between the block 52 and the groove 22 serves to limit the displacement of the spray arm 5 in the circumferential direction.

[0039] There are multiple spray holes 51 facing the first shelf 3 and / or the second shelf 4. At least two of the spray holes 51 are arranged in a row along the axial direction of the spray arm 5 to form a spray hole group. In this embodiment, there is one spray hole group. Of course, there may also be at least two spray hole groups that are spaced apart along the circumference of the spray arm 5.

[0040] like Figure 2 As shown, an upper spray arm 7 is also provided above the frame 2. The upper spray arm 7 is also connected to the water supply pipe 6. The upper spray arm 7 can adopt the existing spray arm structure. The upper spray arm 7 and the spray arm 5 work together, one above the other, to achieve a good cleaning effect on the tableware on the shelf.

[0041] Example 2

[0042] like Figures 7 to 10 As shown, the difference between this embodiment and embodiment 1 is that the spray arm 5 in this embodiment can rotate around its axis.

[0043] The closed end of the spray arm 5 is equipped with a knob 8 that is easy for the user to hold and rotate. The knob 8 is fixed relative to the spray arm 5 in the circumferential direction. By rotating the knob 8, the spray arm 5 can be rotated to adjust the spray angle of the spray nozzle 51 to adapt to the cleaning of different tableware.

[0044] In this embodiment, the closed end of the spray arm 5 is provided with a socket 53, and the knob 8 is provided with a plug 81 that can be inserted into the socket 53. The plug 81 and the socket 53 are connected by a connecting structure. The connecting structure includes a fastener 54 and a fastener 82. The fastener 54 is provided in the socket 53, and the fastener 82 is provided on the plug 81. The fastener 54 is provided with a fastening groove 541 for the fastener to be fastened.

[0045] In this embodiment, the mounting hole 21, in which the closed end of the spray arm 5 is placed, also penetrates the wall thickness of the corresponding side wall. The knob 8 is located on the outside of the frame 2. In this embodiment, the knob 8 is located on the front side of the frame 2 for easy user operation. At least two protrusions 83 are evenly spaced along the circumference of the spray arm 5 on the knob 8. At least two slots 23 are evenly spaced along the circumference of the mounting hole 21 on the side wall of the frame 2. The slots 23 allow the protrusions 83 to be detachably placed inside them. Preferably, the number of slots 23 is greater than the number of protrusions 83. When the protrusions 83 are engaged in the slots 23, the knob 8 will not rotate without external force because the knob 8 and the spray arm 5 are fixed relative to each other in the circumference, so the spray arm 5 will not rotate.

[0046] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be set in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A spray arm for a cleaning machine, characterized in that, The spray arm (5) is provided with a spray hole (51), and the central part of the spray hole (51) has a central shaft (55). At least two blades (56) are arranged in sequence along the circumference of the central shaft (55) on the side of the central shaft (55). Each blade (56) extends from the inside of the spray arm (5) to the outside of the spray arm (5) along the circumference of the central shaft (55), and all blades (56) have the same rotation direction.

2. The spray arm according to claim 1, characterized in that: There are multiple spray holes (51), at least two of which are arranged in a row along the axial direction of the spray arm (5) to form a spray hole group. The spray hole group has one group or at least two groups spaced apart along the circumference of the spray arm (5).

3. A shelf assembly for a spray arm of a cleaning machine according to claim 1 or 2, characterized in that, Includes a frame (2), in which a first shelf (3) and a second shelf (4) are arranged sequentially in the left-right direction. The first shelf (3) is higher than the second shelf (4) and the two are connected. The spray arm (5) extends in the front-back direction and is installed on the frame (2). The spray arm (5) is located directly below the first shelf (3) and next to the second shelf (4). The spray hole (51) faces the first shelf (3) and / or the second shelf (4).

4. The shelf assembly according to claim 3, characterized in that: One end of the spray arm (5) is open as the water inlet, and the other end is closed as the closed end. The front and rear side walls of the frame (2) are provided with mounting holes (21). The two ends of the spray arm (5) are respectively installed in the two mounting holes (21). The mounting holes (21) in which the water inlet is placed are connected to the wall thickness of the corresponding side wall so that the water supply pipe (6) can be connected to the spray arm (5).

5. The shelf assembly according to claim 4, characterized in that: At least one side wall of the frame (2) is provided with a groove (22) next to the mounting hole (21), and the spray arm (5) is provided with a block (52) that can be embedded in the groove (22); or, at least one side wall of the frame (2) is provided with a block (52) next to the mounting hole (21), and the spray arm (5) is provided with a groove (22) into which the block (52) can be embedded.

6. The shelf assembly according to claim 4, characterized in that: The spray arm (5) can rotate around its axis. The closed end of the spray arm (5) is provided with a knob (8) that is easy for the user to hold and rotate. The knob (8) is fixed relative to the spray arm (5) in the circumferential direction.

7. The shelf assembly according to claim 6, characterized in that: The closed end of the spray arm (5) is provided with a socket (53), and the knob (8) is provided with a plug (81) that can be inserted into the socket (53), and the plug (81) and the socket (53) are connected by a connecting structure.

8. The shelf assembly according to claim 6, characterized in that: The mounting hole (21) in which the closed end of the spray arm (5) is placed also penetrates the wall thickness of the corresponding side wall. The knob (8) is located on the outside of the frame (2). At least two protrusions (83) are provided on the knob (8) at intervals along the circumference of the spray arm (5). At least two slots (23) are provided on the side wall of the frame (2) at even intervals along the circumference of the mounting hole (21). The slots (23) allow the protrusions (83) to be detachably placed inside.

9. A cleaning machine, characterized in that: Includes a housing (1) and a shelf assembly as described in any one of claims 3 to 8, wherein the housing (1) is provided with a water supply pipe (6) and the water supply pipe (6) is connected to a spray arm (5).

10. The cleaning machine according to claim 9, characterized in that: Above the frame (2) is an upper spray arm (7), which is also connected to the water supply pipe (6).

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