Spraying arm for cleaning machine and cleaning machine
By setting a limiting part and connecting it to the top cover in the spray arm structure, combined with an L-shaped water seal structure, the problems of spray arm jamming and leakage are solved, achieving stable rotation and low leakage flow, thus improving the cleaning efficiency of the dishwasher.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO FOTILE KITCHEN WARE CO LTD
- Filing Date
- 2025-04-01
- Publication Date
- 2026-04-10
AI Technical Summary
Existing dishwasher spray arms suffer from problems such as jamming, unstable rotation speed, and large leakage loss. In particular, the auxiliary spray arm is prone to jamming due to residue entering the clip gap. The rotating power arm is short and lightweight, which leads to changes or stagnation in rotation speed, and there is also a large leakage at the installation gap.
Design a spray arm structure in which the main spray arm and the auxiliary spray arm are connected by a limiting part and a top cover. The water flow smoothly transitions from the vertical direction to the horizontal direction. There is no water flow pressure in the vertical direction of the auxiliary spray arm, which reduces rotational friction. The L-shaped water seal structure prevents leakage. The protrusion and shallow groove design buffers the leakage, ensuring rotational stability and reducing leakage flow.
It effectively avoids jamming of the spray arm, improves rotational stability, reduces leakage flow, enhances hydraulic efficiency, prevents water leakage, and ensures smooth rotation of the spray arm.
Smart Images
Figure CN224099298U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a dish washer technical field, specifically point to a kind of for cleaning machine's spray arm and cleaning machine. BACKGROUND
[0002] The structural mode of the existing dish washer spray arm is various, wherein, the planetary spray arm is a common structure.
[0003] The installation mode of main spray arm and planetary spray arm (i.e. secondary spray arm) is very important. Most of the existing ones are connected by buckle. This connection mode has several problems:
[0004] (1) the secondary spray arm is easy to be stuck, since the installation matching surface of main spray arm and secondary spray arm is vertical surface, which is in the water flow transmission path, residue is easy to enter the gap, so as to stick the secondary spray arm, resulting in not rotating;
[0005] (2) the rotation speed of secondary spray arm is unstable, the power of secondary spray arm rotation mainly comes from the counteracting force of spray hole to overcome the friction resistance of buckle. Since the volume of secondary spray arm is small and the weight is light, the rotating arm is short, therefore, the slight residue entering the buckle surface will cause the change of rotation speed or even stagnation;
[0006] (3) the leakage loss is relatively large, since the installation gap is in the same direction with water flow, the leakage at the gap is relatively large. INVENTION CONTENTS
[0007] The first technical problem to be solved by the utility model is to provide a spray arm for cleaning machine, which can effectively avoid sticking, provide rotation stability and reduce leakage, aiming at the current situation of the prior art.
[0008] The second technical problem to be solved by the utility model is to provide a cleaning machine applying the above spray arm, aiming at the current situation of the prior art.
[0009] The technical scheme adopted by the utility model to solve at least one of the above technical problems is:
[0010] A spray arm for cleaning machine, comprising a main spray arm and a secondary spray arm, a water outlet is formed on the main spray arm, the secondary spray arm is rotationally connected at the water outlet, a convex edge extending upward is arranged at the edge of the water outlet, a water inlet is formed on the bottom wall of the secondary spray arm, the water inlet is sleeved outside the convex edge, the convex edge is provided with a limiting part extending upward and penetrating through the top wall of the secondary spray arm, and a top cover is arranged at the top of the secondary spray arm, which can constrain the limiting part and the secondary spray arm together.
[0011] With the above structure, when water flows from the main spray arm into the auxiliary spray arm, the water flow is smoothly transferred from the up-down direction to the horizontal direction, and the auxiliary spray arm is not subjected to water flow pressure in the up-down direction, so that the rotation friction of the auxiliary spray arm can be effectively reduced, and the auxiliary spray arm can be stably rotated to avoid being stuck; at the same time, the auxiliary spray arm is not subjected to water flow pressure in the up-down direction, which is also conducive to reducing the leakage flow.
[0012] Preferably, the upper surface of the main spray arm is formed with a boss arranged around the periphery of the convex edge, and the lower surface of the auxiliary spray arm abuts against the boss. With such a structure, the lower surface of the auxiliary spray arm is rotationally matched with the boss, which is conducive to improving the rotation stability of the auxiliary spray arm.
[0013] Preferably, the lower surface of the auxiliary spray arm is provided with a convex block arranged around the periphery of the water inlet, and the convex block is rotationally supported on the boss. This structure can reduce the rotation matching surface, reduce the friction resistance, and improve the rotation smoothness of the auxiliary spray arm.
[0014] Preferably, the convex block is a plurality of convex blocks and is arranged at intervals around the water inlet, and a drainage gap is formed between the adjacent two convex blocks. This structure has a certain water pressure leakage buffer, which is conducive to further balancing the pressure and avoiding the auxiliary spray arm from being stuck and rotating stably.
[0015] Preferably, the lower surface of the auxiliary spray arm is provided with a shallow groove arranged around the water inlet and surrounding the convex block, the drainage gap is surrounded in the shallow groove, and the bottom of the convex block protrudes below the shallow groove. The shallow groove surrounds the drainage gap, which can store and buffer the leaked water flow, so as to further reduce the leakage flow.
[0016] Preferably, the top of the convex edge is substantially flush with the lower surface of the flow channel of the auxiliary spray arm. With such a structure, when water flows from the main spray arm into the auxiliary spray arm, the water flow is more smoothly transferred from the up-down direction to the horizontal direction.
[0017] Preferably, the limiting part comprises a connecting rib extending upward from the top of the convex edge, an upper cover located at the top of the connecting rib, and a limiting sleeve provided at the top of the upper cover, the top wall of the auxiliary spray arm is provided with a fitting opening, the upper cover is rotationally covered below the fitting opening, and the limiting sleeve is fitted and connected with the upper cover of the auxiliary spray arm through the fitting opening. With the above structure, assembly and connection are facilitated.
[0018] Preferably, the inner top surface of the auxiliary spray arm is provided with a fitting groove for rotationally clamping the upper cover. With such a structure, from the cross section, the upper cover and the top wall of the auxiliary spray arm form a water seal in L-shaped structure, which can effectively prevent water flow from leaking at this position and improve the water efficiency.
[0019] Preferably, the lower surface of the upper cover is arranged corresponding to the water outlet and is provided with a flow guide cone gradually protruding from the edge to the center to the water outlet direction.
[0020] Preferably, the side of the limiting sleeve is provided with a bayonet, and the lower surface of the top cover is provided with a downward extending clamping leg capable of being inserted into the limiting sleeve and matched with the bayonet. This structure facilitates the detachable assembly of the limiting sleeve and the top cover, facilitating disassembly.
[0021] A cleaning machine comprises a box body, and further comprises the above-mentioned spray arm which is rotatably arranged in the box body.
[0022] Compared with the prior art, the utility model has the advantages that: the utility model discloses through set up limiting portion and top cover with the secondary spray arm rotatory connection in the water outlet place of main spray arm, when water current enters the secondary spray arm from main spray arm, from up and down direction steady transition to horizontal direction, the up and down direction of secondary spray arm has no water current pressure, can effectively reduce the rotation friction of secondary spray arm, makes the secondary spray arm can steady rotation, to avoid the card and set, simultaneously, the up and down direction of secondary spray arm has no water current pressure, also is favorable for reducing the discharge capacity. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is the structure schematic view of the spray arm of the utility model embodiment;
[0024] Figure 2 It is the partial exploded view of Figure 1 ;
[0025] Figure 3 It is the local enlarged view of Figure 2 ;
[0026] Figure 4 It is another angle view of Figure 3 ;
[0027] Figure 5 It is the assembly drawing of main spray arm and secondary spray arm in the utility model embodiment. DETAILED DESCRIPTION
[0028] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent, obvious and easy to understand, the specific embodiments of the utility model are described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the following disclosed specific embodiments.
[0029] In the description of the utility model, it is understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0030] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, if the term "multiple" appears, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.
[0031] In the utility model, unless otherwise specifically defined and limited, if the terms "mounting", "connection", "connection", "fixing" and the like appear, these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0032] In the utility model, unless otherwise specifically defined and limited, if the first feature appears "on" or "under" the second feature and the like, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0033] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this invention are for illustrative purposes only and do not represent the only possible implementation.
[0034] like Figures 1 to 5 As shown, the spray arm used in this embodiment for the cleaning machine includes a main spray arm 1 and a secondary spray arm 2. The main spray arm 1 has a body extending along the length direction. The interior of the main spray arm 1 is hollow to form a flow channel. The upper surface of the main spray arm 1 is provided with a plurality of spray holes that communicate with the flow channel.
[0035] The main spray arm 1 has an outlet 11 on its upper surface. In this embodiment, the outlet 11 is located near the end of the main spray arm 1. The auxiliary spray arm 2 is rotatably connected to the outlet 11. The edge of the outlet 11 has an upwardly extending flange 12. The bottom wall of the auxiliary spray arm 2 has an inlet 21 that fits over the flange 12. The flange 12 has a limiting part 100 that extends upward and passes through the top wall of the auxiliary spray arm 2. The top of the auxiliary spray arm 2 has a top cover 3 that can rotatably constrain the limiting part and the auxiliary spray arm 2 together. The top of the auxiliary spray arm 2 also has spray holes.
[0036] With the above structure, when the water flows from the main spray arm 1 into the auxiliary spray arm 2, it smoothly transitions from the vertical direction to the horizontal direction. There is no water flow pressure in the vertical direction of the auxiliary spray arm 2, which can effectively reduce the rotational friction of the auxiliary spray arm 2 and allow the auxiliary spray arm 2 to rotate stably to avoid jamming. At the same time, the absence of water flow pressure in the vertical direction of the auxiliary spray arm 2 also helps to reduce the discharge flow.
[0037] The upper surface of the main spray arm 1 has a boss 13 arranged around the periphery of the raised edge 12, and the lower surface of the auxiliary spray arm 2 abuts against the boss 13. With this structure, the lower surface of the auxiliary spray arm 2 rotates with the boss 13, which helps to improve the rotational stability of the auxiliary spray arm 2.
[0038] The lower surface of the auxiliary spray arm 2 is provided with protrusions 22 arranged around the periphery of the water inlet 21, and these protrusions 22 are rotatably supported on the boss 13. This structure can reduce the rotational mating surface, reduce frictional resistance, and improve the smoothness of rotation of the auxiliary spray arm 2.
[0039] Multiple protrusions 22 are arranged at intervals around the water inlet 21, and a drainage gap 23 is formed between adjacent protrusions 22. This structure provides a certain water pressure leakage buffer, which helps to further balance the pressure, prevent the auxiliary spray arm 2 from getting stuck, and ensure stable rotation.
[0040] The lower surface of the sub-spraying arm 2 is provided with a shallow groove 24 arranged around the water inlet 21 and surrounding the protrusion 22, the water leakage gap 23 is surrounded in the shallow groove 24, and the bottom of the protrusion 22 protrudes below the shallow groove 24. The above-mentioned shallow groove 24 surrounds the water leakage gap 23, can store and buffer the leaked water flow, and further reduces the leakage amount.
[0041] The top of the protruding edge 12 is substantially flush with the lower surface of the flow channel of the sub-spraying arm 2. With such a structure, when the water flow enters the sub-spraying arm 2 from the main spraying arm 1, it smoothly and stably transitions from the up-down direction to the horizontal direction.
[0042] The limiting part includes a connecting rib 14 extending upward from the top of the protruding edge 12, an upper cover 15 located at the top of the connecting rib 14, and a limiting sleeve 16 provided at the top of the upper cover 15. The top wall of the sub-spraying arm 2 is provided with a fitting opening 25, the upper cover 15 is rotatably covered below the fitting opening 25, and the limiting sleeve 16 passes through the fitting opening 25 and is connected with the top cover 3 above the sub-spraying arm 2. The above-mentioned structure is convenient for assembly and connection.
[0043] The inner top surface of the sub-spraying arm 2 is provided with a fitting groove 26 for rotatably clamping the upper cover 15. With such a structure, from the cross section, the upper cover 15 and the top wall of the sub-spraying arm 2 form an L-shaped water seal, which can effectively prevent water flow leakage and improve water efficiency.
[0044] The lower surface of the upper cover 15 is arranged corresponding to the water outlet 11 and is provided with a flow guide cone 151 gradually protruding from the edge to the center to the water outlet 11. This structure is conducive to guiding the water flow and reducing water loss.
[0045] The side of the limiting sleeve 16 is provided with a bayonet 161, and correspondingly, the lower surface of the top cover 3 is provided with a clamping leg 31 extending downward and capable of being inserted into the limiting sleeve 16 and connected with the bayonet 161. This structure is convenient for detachable assembly of the limiting sleeve 16 and the top cover 3, and facilitates disassembly.
[0046] In the embodiment, the limiting part and the top cover 3 are arranged to rotatably connect the sub-spraying arm 2 to the water outlet 11 of the main spraying arm 1. When the water flow enters the sub-spraying arm 2 from the main spraying arm 1, it smoothly and stably transitions from the up-down direction to the horizontal direction, and there is no water flow pressure in the up-down direction of the sub-spraying arm 2, which can effectively reduce the rotating friction of the sub-spraying arm 2, so that the sub-spraying arm 2 can stably rotate to avoid clamping. At the same time, the water flow pressure in the up-down direction of the sub-spraying arm 2 is also conducive to reducing the leakage amount. In addition, the L-shaped water seal structure of the overlapping joint of the main spraying arm 1 and the sub-spraying arm 2 can effectively prevent water flow leakage and improve water efficiency. Finally, the rotating gap of the sub-spraying arm 2 is designed at 90 degrees to the water flow direction, which can effectively prevent residues from being clamped into the rotating gap and causing the sub-spraying arm 2 to be blocked.
[0047] The cleaning machine of the embodiment comprises a box body and the spray arm which is rotatably arranged in the box body.
[0048] The technical features of the above embodiments can be combined arbitrarily, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.
[0049] The above embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as a limitation on the patent application range. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.
Claims
1. A spray arm for a cleaning machine, comprising a main spray arm (1) and a secondary spray arm (2), wherein the main spray arm (1) has a water outlet (11), and the secondary spray arm (2) is rotatably connected to the water outlet (11), characterized in that: The edge of the water outlet (11) is provided with a convex edge (12) extending upward, the bottom wall of the auxiliary spray arm (2) is provided with a water inlet (21) sleeved outside the convex edge (12), the convex edge (12) is provided with a limiting part extending upward and penetrating through the top wall of the auxiliary spray arm (2), and the top of the auxiliary spray arm (2) is provided with a top cover (3) capable of restricting the limiting part and the auxiliary spray arm (2) together.
2. A spray arm for a washing machine according to claim 1, characterized in that: The upper surface of the main spray arm (1) is formed with a boss (13) arranged around the periphery of the convex edge (12), and the lower surface of the auxiliary spray arm (2) abuts against the boss (13).
3. A spray arm for a washing machine according to claim 2, characterised in that: The lower surface of the auxiliary spray arm (2) is provided with a convex block (22) arranged around the periphery of the water inlet (21), and the convex block (22) is rotationally supported on the boss (13).
4. A spray arm for a washing machine according to claim 3, characterised in that: The convex block (22) is a plurality of convex blocks arranged at intervals around the water inlet (21), and a drainage gap (23) is formed between adjacent two convex blocks (22).
5. A spray arm for a washing machine according to claim 4, characterised in that: The lower surface of the auxiliary spray arm (2) is provided with a shallow groove (24) arranged around the water inlet (21) and surrounding the convex block (22), the drainage gap (23) is surrounded in the shallow groove (24), and the bottom of the convex block (22) protrudes below the shallow groove (24).
6. A spray arm for a washing machine according to any one of claims 1 to 5, characterised in that: The top of the convex edge (12) is substantially flush with the lower surface of the flow channel of the auxiliary spray arm (2).
7. A spray arm for a washing machine according to any one of claims 1 to 5, characterised in that: The limiting part comprises a connecting rib (14) extending upward from the top of the convex edge (12), an upper cover (15) located at the top of the connecting rib (14), and a limiting sleeve (16) provided at the top of the upper cover (15), the top wall of the auxiliary spray arm (2) is provided with a fitting opening (25), the upper cover (15) is rotationally covered below the fitting opening (25), and the limiting sleeve (16) penetrates through the fitting opening (25) and is connected with the top cover (3) above the auxiliary spray arm (2).
8. A spray arm for a washing machine according to claim 7, characterised in that: The inner top surface of the auxiliary spray arm (2) is provided with a fitting groove (26) for rotationally clamping the upper cover (15) therein.
9. The spray arm for a washing machine according to claim 7, characterized in that: The lower surface of the upper cover (15) is arranged corresponding to the water outlet (11) and provided with a flow guide cone (151) protruding from the edge to the center to the water outlet (11), and the side of the limiting sleeve (16) is provided with a bayonet (161), and correspondingly, the lower surface of the top cover (3) is provided with a clamping leg (31) extending downward and capable of being inserted into the limiting sleeve (16) and connected with the bayonet (161).
10. A cleaning machine comprising a housing, characterised in that: The shower arm of any one of claims 1-9 is further included, and the shower arm is rotationally arranged in the box.