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 spraying arm main body, the spraying arm main body is provided with a plurality of water spraying holes, the spraying arm main body is also provided with a water outlet, the water outlet is connected with a nozzle capable of rotating relative to the spraying arm main body, the nozzle is provided with a spraying hole, and the spraying hole is communicated with the spraying arm main body. A top cover capable of rotating relative to the nozzle is arranged at the top of the nozzle, and water passing holes which are arranged corresponding to the spraying holes and can rotate along with the top cover to adjust the alignment degree with the spraying holes are formed in the top cover. When tableware to be cleaned is severely dirty, the water flow passing area can be reduced by reducing the alignment degree of the water passing holes and the spraying holes, the water flow intensity and the impact force to pollutants are increased, and the cleaning effect is improved. When the dirt degree of tableware is small, the water flow passing area can be increased, dirt on the surfaces of bowls and dishes can be rapidly cleaned, the cleaning efficiency is improved, the cleaning effect and the cleaning efficiency can be well balanced according to the dirt degree of the tableware, energy is saved, and consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, specifically to a spray arm for a cleaning machine and a cleaning machine. Background Technology

[0002] Dishwashers typically include a spray arm that rinses dishes or fruits and vegetables by spraying water jets. For example, Chinese patents CN204813755U ("Dishwasher Spray Arm Base, Dishwasher Spray Arm Device and Dishwasher") and CN209932651U ("A Spray Arm for a Cleaning Machine") disclose the corresponding spray arm structures.

[0003] The applicant's prior patent ZL202223362585.0, "Spray Arm for Cleaning Machine and Cleaning Machine," discloses a structure comprising a spray arm body with multiple spray holes and a water outlet. A nozzle, rotatable relative to the spray arm body, is connected to the water outlet and has spray holes. This spray arm structure, with its nozzle rotating with and relative to the spray arm, helps eliminate cleaning dead zones and improves cleaning effectiveness.

[0004] However, the water flow intensity sprayed by existing spray arms is usually set by the factory and cannot be changed according to the specific cleaning needs of the object to be cleaned, thus failing to balance the cleaning effect and cleaning efficiency well. Utility Model Content

[0005] The first technical problem to be solved by this utility model is to provide a spray arm for a cleaning machine that can adjust the water flow intensity according to the needs of the object to be cleaned, thereby better balancing the cleaning effect and cleaning efficiency, in light of the current state of the technology.

[0006] The second technical problem to be solved by this utility model is to provide a cleaning machine with the above-mentioned spray arm, in view of the current situation of the prior art.

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

[0008] A spray arm for a cleaning machine includes a spray arm body with multiple spray holes and a water outlet. A nozzle that can rotate relative to the spray arm body is connected to the water outlet. The nozzle has spray holes, and a top cover that can rotate relative to the nozzle is provided on the top of the nozzle. The top cover has water passage holes that are arranged corresponding to the spray holes and whose alignment with the spray holes can be adjusted as the top cover rotates.

[0009] Preferably, both the spray nozzle and the water passage are elongated holes extending circumferentially along the nozzle. The alignment between the water passage and the spray nozzle increases or decreases as the top cover rotates. Correspondingly, the water passage and the spray nozzle together constrain the flow area of ​​the sprayed water column. Using this structure, the flow area can be controlled within a more reasonable range to meet more cleaning needs.

[0010] Preferably, the upper surface of the nozzle is provided with a raised edge extending upward along the edge of the spray hole, the upper edge of which abuts against the lower surface of the top cover. With this structure, the raised edge allows water to flow only axially between the water passage and the spray hole, preventing radial leakage.

[0011] Preferably, the spray holes are multiple and arranged circumferentially on the upper surface of the nozzle, and the water passage holes correspond one-to-one with the spray holes. This structure increases the spray range of the nozzle, eliminates cleaning dead zones, and improves the cleaning effect.

[0012] Preferably, the top cover has a downwardly extending rim that is rotatably constrained to the outer peripheral wall of the nozzle. More preferably, the outer peripheral wall of the nozzle has a protruding clip, and correspondingly, the rim has a circumferentially extending slot for the protruding clip to slide and engage. Even more preferably, the length of the slot in the circumferential direction of the rim is not less than the length of the nozzle orifice in the circumferential direction of the nozzle. This structure facilitates manual rotation of the top cover to adjust the flow area of ​​the nozzle, makes connection between the top cover and the nozzle convenient, and also facilitates user operation.

[0013] Preferably, the inner surface of the rim is provided with vertically extending ribs, which are multiple in number and spaced apart around the circumference of the rim. The inner edge of the ribs frictionally engages with the outer peripheral wall of the nozzle. This structure improves the assembly reliability between the top cover and the nozzle, and enhances the stability of their relative rotation.

[0014] Preferably, the top of the spray arm body is provided with an air collecting chamber that surrounds the spray holes, thereby supplying gas to the spray holes to form a jet of water containing bubbles. The spray arm body has relative length and width directions, and the nozzle is located at the end of the spray arm body. The air collecting chamber extends from the center of the spray arm body towards the end and is located inside the nozzle. With the above structure, the end of the air collecting chamber and the outer end wall of the spray arm body form a semi-enclosed structure for the nozzle, which is beneficial to improving the rotational stability of the nozzle.

[0015] A cleaning machine includes a housing with a recessed return water area at the bottom and a filter plate covering the top of the return water area. It also includes the aforementioned spray arm, which is rotatably mounted on the filter plate and connected to the return water area via a pumping mechanism.

[0016] Compared with the prior art, the advantages of this utility model are as follows: This utility model has a top cover that can rotate relative to the nozzle. Rotating the top cover can adjust the alignment between the water passage hole and the spray hole, thereby controlling the flow area of ​​the nozzle spray. When the tableware to be cleaned is heavily soiled, the alignment between the water passage hole and the spray hole can be reduced to decrease the water flow area, increase the water flow intensity and the impact force on the contaminants, and improve the cleaning effect. When the tableware is less soiled, the water flow area can be increased to quickly clean the surface of the dishes and improve the cleaning efficiency. This utility model can effectively balance the cleaning effect and cleaning efficiency according to the degree of soiling of the tableware, saving energy and reducing consumption. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the spray arm in an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A sectional view;

[0019] Figure 3 for Figure 1 Exploded view;

[0020] Figure 4 The figure shows a schematic diagram of the top cover in an embodiment of this utility model. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1-4 As shown, the spray arm for the cleaning machine in this embodiment includes a spray arm body 1. A flow channel 10 extending along the length direction is formed inside the spray arm body 1. A water inlet 101 communicating with the flow channel is opened at the bottom of the spray arm body 1, and a plurality of water spray holes 11 are opened at the top. The spray arm body 1 also has a water outlet 12 arranged near the end. A nozzle 2 that can rotate relative to the spray arm body 1 is connected to the water outlet 12. The nozzle 2 is disc-shaped and has spray holes 21. A top cover 3 that can rotate relative to the nozzle 2 is provided on the top of the nozzle 2. A water passage hole 31 is opened on the top cover 3 corresponding to the spray holes 21 and can be adjusted to be aligned with the spray holes 21 as the top cover 3 rotates.

[0023] Both the spray nozzle 21 and the water passage 31 are elongated holes extending circumferentially along the nozzle 2. The alignment of the water passage 31 with the spray nozzle 21 increases or decreases as the top cover 3 rotates. Correspondingly, the water passage 31 and the spray nozzle 21 together constrain the flow area of ​​the sprayed water column. With the above structure, the flow area can be controlled within a more reasonable range to meet more cleaning needs.

[0024] The upper surface of the nozzle 2 is provided with a raised edge 22 extending upward along the edge of the spray hole 21, and the upper edge of the raised edge 22 abuts against the lower surface of the top cover 3. With the above structure, the raised edge 22 allows water to be transmitted axially between the water passage hole 31 and the spray hole 21, thus preventing water leakage in the radial direction.

[0025] Multiple spray holes 21 are arranged circumferentially on the upper surface of the nozzle 2, and water passage holes 31 correspond one-to-one with the spray holes 21. This structure increases the spray range of the nozzle 2, eliminates cleaning dead zones, and improves the cleaning effect.

[0026] The top cover 3 has a downwardly extending rim 32, which is rotatably constrained to the outer peripheral wall of the nozzle 2. The outer peripheral wall of the nozzle 2 has a protruding clip 23, and correspondingly, the rim 32 has a circumferentially extending slot 321 for the protruding clip 23 to slide and engage. The length of the slot 321 in the circumferential direction of the rim 32 is not less than the length of the nozzle orifice 21 in the circumferential direction of the nozzle 2. This structure facilitates manual rotation of the top cover 3 to adjust the flow area of ​​the nozzle 2, makes connection between the top cover 3 and the nozzle 2 convenient, and also facilitates user operation.

[0027] The inner surface of the rim 32 is provided with vertically extending ribs 322. There are multiple ribs 322, which are spaced apart around the circumference of the rim 32. The inner edge of the ribs 322 is in frictional engagement with the outer peripheral wall of the nozzle 2. This structure can improve the assembly reliability between the top cover 3 and the nozzle 2 and improve the stability of their relative rotation.

[0028] The top of the spray arm body 1 is provided with an air collecting chamber 13 that surrounds the water spray holes 11, thereby supplying gas to the water spray holes 11 to form a jet of water containing bubbles. A top plate 15 is provided on the top wall of the spray arm body 1 at intervals therebetween. The air collecting chamber 13 is enclosed between the top plate and the upper surface of the spray arm body 1. Jet holes corresponding to the water spray holes 11 are formed on the top plate, creating a first gap between the jet holes and the water spray holes, allowing air to be drawn into the jet of water in a jetting state. The spray arm body 1 has relative length and width directions. The nozzle 2 is located at the end of the spray arm body 1, and the air collecting chamber 13 extends from the center of the spray arm body 1 towards the end and is located inside the nozzle 2. With this structure, the end of the air collecting chamber 13 and the outer end wall of the spray arm body 1 form a semi-enclosed structure for the nozzle 2, which is beneficial for improving the rotational stability of the nozzle 2.

[0029] The cleaning machine of this embodiment includes a housing with a recessed return water area at the bottom. The top of the return water area is covered by a filter plate. It also includes the aforementioned spray arm, which is rotatably mounted on the filter plate and connected to the return water area via a pumping mechanism.

[0030] In this embodiment, a top cover 3 that can rotate relative to the nozzle 2 is provided on the top of the nozzle 2. Rotating the top cover 3 can adjust the alignment between the water passage hole 31 and the spray hole 21, thereby controlling the flow area of ​​the nozzle 2. When the tableware to be cleaned is heavily soiled, the alignment between the water passage hole 31 and the spray hole 21 can be reduced to decrease the water flow area, increase the water flow intensity and the impact force on the contaminants, and improve the cleaning effect. When the tableware is less soiled, the water flow area can be increased to quickly clean the surface of the dishes and improve the cleaning efficiency. This embodiment can effectively balance the cleaning effect and cleaning efficiency according to the degree of soiling of the tableware, saving energy and reducing consumption.

[0031] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only 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, comprising a spray arm body having a plurality of spray holes, and a water outlet connected to the spray arm body, the water outlet being a nozzle rotatable relative to the spray arm body, the nozzle having spray holes, characterized in that: The nozzle is provided with a top cover that can rotate relative to the nozzle. The top cover has water passage holes that are arranged with corresponding spray holes and whose alignment with the spray holes can be adjusted as the top cover rotates.

2. The spray arm for a cleaning machine according to claim 1, characterized in that: Both the spray hole and the water passage hole are elongated holes extending circumferentially along the nozzle. The alignment between the water passage hole and the spray hole increases or decreases as the top cover rotates. Correspondingly, the water passage hole and the spray hole together constrain the flow area of ​​the sprayed water column.

3. The spray arm for a cleaning machine according to claim 2, characterized in that: The upper surface of the nozzle is provided with a raised edge extending upward along the edge of the nozzle hole, and the upper edge of the raised edge abuts against the lower surface of the top cover.

4. The spray arm for a cleaning machine according to claim 2, characterized in that: The nozzle has multiple spray holes arranged circumferentially on the upper surface of the nozzle, and the water passage holes correspond one-to-one with the spray holes.

5. The spray arm for a cleaning machine according to any one of claims 1 to 4, characterized in that: The top cover has a downwardly extending rim that is rotatably constrained to the outer peripheral wall of the nozzle.

6. The spray arm for a cleaning machine according to claim 5, characterized in that: The outer peripheral wall of the nozzle is provided with a protruding clip, and correspondingly, the perimeter is provided with a slot that extends circumferentially and allows the protruding clip to slide and engage therein.

7. The spray arm for a cleaning machine according to claim 6, characterized in that: The length of the bayonet in the circumferential direction of the perimeter is not less than the length of the nozzle in the circumferential direction of the spray hole.

8. The spray arm for a cleaning machine according to claim 5, characterized in that: The inner surface of the rim is provided with vertically extending ribs, which are multiple in number and spaced apart around the rim. The inner edge of the ribs is in frictional engagement with the outer peripheral wall of the nozzle.

9. The spray arm for a cleaning machine according to any one of claims 1 to 4, characterized in that: The top of the spray arm body is provided with an air collection chamber that surrounds the water spray hole, thereby supplying gas to the water spray hole to form a jet of water with bubbles. The spray arm body has relative length and width directions. The nozzle is located at the end of the spray arm body. The air collection chamber extends from the center of the spray arm body to the end and is located inside the nozzle.

10. A cleaning machine, comprising a housing, wherein a recessed water return area is provided at the bottom of the housing, and a filter plate is covered on top of the water return area, characterized in that: It also includes a spray arm as described in any one of claims 1 to 9, wherein the spray arm is rotatably mounted on the filter plate and is connected to the return water area via a pumping mechanism.

Images