Spraying structure and dish washing machine
The problem of poor sealing of the water pipe in the dishwasher was solved by the one-piece molded sealing component, which improved the sealing effect and stabilized the water flow, thus improving the spraying effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO HAIER DISHWASHER
- Filing Date
- 2025-04-09
- Publication Date
- 2026-05-08
AI Technical Summary
The sealing structure of the rear and middle water inlet pipes in existing dishwashers has loosening and leakage problems, which affects the water flow pressure and spray effect.
The integrated sealing assembly, including a sealing frame and a sealing ring, enhances connection stability through clamping parts and guide cones, and allows for water flow regulation and sealing flexibility through multiple through holes and baffles.
It improves the sealing effect between pipes, prevents leakage, ensures stable water flow, and enhances the spraying effect of the dishwasher.
Smart Images
Figure CN224206776U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of dishwasher technology, specifically providing a spray structure and a dishwasher. Background Technology
[0002] The rear water inlet pipe of a dishwasher usually refers to the water inlet pipe located at the rear of the dishwasher. Its inlet end is connected to an external water source, and its main function is to introduce external water into the dishwasher. The middle water inlet pipe of the dishwasher refers to the water outlet pipe located in the middle of the dishwasher and connected to the rear water inlet pipe. It plays a role in transferring and distributing water flow inside the dishwasher, guiding the water flow to the water inlet pipe at the spray arm.
[0003] However, there are currently some problems with the sealing connection between the rear water inlet pipe and the central water inlet pipe. Most existing sealing structures are of a split type. Because the seal consists of multiple separate components, each component needs to be precisely positioned and installed during installation. This not only increases installation time and difficulty but also places higher demands on the technical skills of the installers. Furthermore, during long-term use, the connections between the various components of the split-type seal are prone to loosening or displacement, significantly reducing the sealing effect. If the seal is not tight, the water pressure entering the spray arm may be insufficient, weakening the water jet force and affecting the cleaning impact.
[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Utility Model Content
[0005] This application aims to solve the aforementioned technical problem, namely, to resolve the issue that the rear and middle water inlet pipes of existing dishwashers are not properly sealed, leading to water leakage and thus affecting water pressure and spraying effect.
[0006] In a first aspect, this application provides a spray structure, comprising:
[0007] first tube body;
[0008] The second tube is connected to the first tube.
[0009] A sealing assembly is disposed at the connection between the first tube body and the second tube body. The sealing assembly includes a sealing frame and a sealing ring disposed on the sealing frame. The sealing frame and the sealing ring are integrally formed. The first tube body passes through the sealing ring and communicates with the second tube body.
[0010] When the above technical solution is adopted, the spray structure uses an integrally molded sealing component to seal between the pipes. Compared with the traditional assembly method, it can avoid the gaps and loosening problems that may occur in the traditional assembly method, improve the sealing effect between the pipes, and ensure that there is no leakage during water flow.
[0011] Optionally, the sealing ring includes a clamping portion, and the outer peripheral wall of the first tube body abuts against the clamping portion.
[0012] When the above technical solution is adopted, the clamping part can generate a clamping force on the first tube when the first tube body passes through, so that the connection between the first tube body and the sealing ring is tighter and more stable.
[0013] Optionally, the inner diameter of the clamping part gradually decreases toward the side where the second tube is located.
[0014] When the above technical solution is adopted, the inner diameter of the clamping part is continuously tapered towards the second tube body along the insertion direction of the first tube body, forming a guide cone surface. This guide cone surface can guide the first tube body when inserting the sealing ring and make the insertion process smoother. At the same time, it can also provide radial clamping force, making the connection between the first tube body and the sealing ring tighter and more stable.
[0015] Optionally, the sealing frame is provided with a plurality of through holes, and each through hole corresponds to a sealing ring. The sealing assembly further includes:
[0016] A sealing element is connected between the second pipe body and the sealing frame to seal the connection between the sealing frame and the second pipe body. The sealing element includes a baffle plate, which closes the through hole in its natural state and can rotate relative to the sealing element to open the through hole under the action of external force.
[0017] By adopting the above technical solution, the height of the second tube can be adjusted by setting multiple through holes in the sealing component and closing or opening the through holes by a baffle plate.
[0018] Optionally, the sealing ring abuts against the sealing element.
[0019] When the above technical solution is adopted, the baffle plate can be pressed tightly against the sealing ring under the action of water pressure to prevent water from overflowing from there.
[0020] Optionally, the sealing ring has an inclined surface near the end of the sealing member, and the water baffle is in contact with the inclined surface.
[0021] When the above technical solution is adopted, the pressure distribution in the contact area between the inclined surface and the baffle is more uniform compared with the traditional planar contact method, which avoids the stress concentration phenomenon that may occur when the planar contact occurs, thereby reducing the risk of seal failure caused by excessive local pressure.
[0022] Optionally, the sealing frame is provided with a snap-fit groove, and the sealing element is provided with a snap-fit protrusion, the snap-fit protrusion snapping into the snap-fit groove.
[0023] With the above technical solution, the connection between the seal and the sealing frame is more convenient and stable.
[0024] Optionally, the sealing ring is made of an elastic material.
[0025] When the above technical solution is adopted, the sealing ring can fit tightly against the contact surface due to its elasticity when it is used with other components. When subjected to a certain pressure, the sealing ring made of elastic material will deform and fill the tiny gaps between the contact surfaces, thereby effectively preventing water leakage.
[0026] Optionally, the second tube body is provided with an annular groove, and the sealing component is disposed in the annular groove.
[0027] By adopting the above technical solution, the sealing components are prevented from shifting under the impact of water flow, ensuring that the first pipe and the second pipe always maintain a good connection, avoiding seal failure due to vibration or displacement, thereby further improving the sealing performance of the connection between the first pipe and the second pipe.
[0028] In a second aspect, this application provides a dishwasher including a spray structure as described in any one of the first aspects.
[0029] The dishwasher provided in this application is equipped with the aforementioned spray structure. Because this spray structure has significant features and advantages such as preventing leakage and providing good sealing, the water flow in the dishwasher's water inlet pipe can be delivered more stably, thereby improving the dishwasher's spraying effect. Attached Figure Description
[0030] The preferred embodiments of this application are described below with reference to the accompanying drawings, in which:
[0031] Figure 1 This is a partial structural schematic diagram of a spray structure according to an embodiment of this application;
[0032] Figure 2 yes Figure 1 A schematic cross-sectional view of the structure at point C.
[0033] Figure 3 This is an exploded structural diagram of a sealing assembly according to an embodiment of this application;
[0034] Figure 4 This is a partial structural schematic diagram of the second tube body according to an embodiment of this application;
[0035] Figure 5 This is a partial structural schematic diagram of a sealing assembly according to an embodiment of this application.
[0036] List of reference numerals in the attached diagram:
[0037] 1-First tube body, 2-Second tube body, 20-Annular groove, 3-Sealing component, 31-Sealing frame, 310-Through hole, 3101-First through hole, 3102-Second through hole, 311-Snap-fit groove, 32-Sealing ring, 321-Clamping part, 322-Inclined surface, 33-Sealing element, 331-Water baffle, 3311-First water baffle, 3312-Second water baffle, 332-Snap-fit protrusion. Detailed Implementation
[0038] Preferred embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.
[0039] It should be noted that in the description of this application, terms such as "upper," "lower," "left," "right," "inner," and "outer," which indicate direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. These terms are used merely for ease of description and do not indicate or imply that the relevant device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, ordinal numbers such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0040] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0041] Please refer to Figure 1 The diagram shows a partial structural schematic of a spray structure according to an embodiment of the present application. The spray structure includes a first pipe body 1 and a second pipe body 2 connected to the first pipe body 1. The first pipe body 1 and the second pipe body 2 are sealed together by a sealing component 3.
[0042] Specifically, please refer to Figure 2 and Figure 3 The sealing assembly 3 consists of a sealing frame 31 and a sealing ring 32. The sealing frame 31, serving as the supporting frame for the entire sealing assembly 3, is generally made of a material with high hardness, such as hard plastic or metal alloy, to ensure that it will not deform during long-term use. The sealing ring 32 is the core component for achieving the sealing function and is typically made of rubber material with good elasticity and sealing performance.
[0043] Furthermore, the sealing ring 32 is embedded within the sealing frame 31, and the sealing frame 31 and the sealing ring 32 are manufactured using an integral molding process, such as through an "insert molding process". In this process, the pre-made sealing frame 31 is placed into the mold as an insert, and then the material for making the sealing ring 32 is injected, so that it is tightly bonded to the sealing frame 31 and formed within the mold.
[0044] This process not only makes the connection between the sealing ring 32 and the sealing frame 31 more secure and tighter, avoiding the gaps and loosening problems that may occur in traditional assembly methods, but also greatly improves the overall sealing effect of the sealing assembly 3, ensuring that there will be no leakage during water flow.
[0045] In one feasible approach, refer to Figure 4 The second pipe body 2 is provided with an annular groove 20 at the end near the first pipe body 1. The sealing component 3 is embedded in the annular groove 20, and the outer periphery of the sealing component 3 is in contact with the inner wall of the annular groove 20. This can prevent the sealing component 3 from being displaced under the impact of water flow, ensuring that the first pipe body 1 and the second pipe body 2 always maintain a good connection state, avoiding sealing failure due to vibration or displacement, thereby further improving the sealing performance of the connection between the first pipe body 1 and the second pipe body 2.
[0046] In one implementation, the sealing frame 31 is provided with a groove. When using the insert injection molding process, the sealing frame 31 is accurately placed in the mold cavity, and then molten rubber or soft plastic injection molding material is injected into the mold. When the material is filled, it forms a protrusion corresponding to the groove. After cooling and solidification, it is demolded.
[0047] During the injection molding process, the groove provides a specific molding space for the injection molding material. This not only facilitates the smooth implementation of the injection molding process and enables the precise molding of the interlocking structure between the sealing frame 31 and the sealing element 33, enhancing the stability and reliability of their connection, but also increases the contact area between the sealing frame 31 and the injection molding material, improving the bonding force between them. This helps to achieve a tighter and stronger integrated molding effect, further improving the sealing performance of the product.
[0048] In one embodiment, please continue to refer to Figure 2 and 3 The first tube 1 passes through the sealing ring 32 and communicates with the second tube 2. Furthermore, the sealing ring 32 is provided with a clamping part 321, which is used to generate a clamping force on the first tube 1 when it passes through, so as to make the connection between the first tube 1 and the sealing ring 32 tighter and more stable.
[0049] Reference Figure 5The clamping part 321 is specifically connected to the annular cylinder inside the sealing ring 32. A gap is formed between the outer wall of the annular cylinder and the inner wall of the sealing ring 32, which provides space for the deformation of the annular cylinder. When the first tube 1 is inserted, the annular cylinder can deform within this space and generate a clamping force on the first tube 1.
[0050] Furthermore, the inner diameter of the annular cylinder is continuously tapering towards the second tube 2 along the insertion direction of the first tube 1, forming a guide cone surface. This guide cone surface can guide the first tube 1 when inserting the sealing ring 32 and make the insertion process smoother. At the same time, it can also provide radial clamping force, making the connection between the first tube 1 and the sealing ring 32 tighter and more stable.
[0051] In one specific embodiment, the rear water inlet pipe of the dishwasher is defined as the first pipe body 1, and the middle water inlet pipe is defined as the second pipe body 2.
[0052] To allow for flexible adjustment of the height of the central water inlet pipe, a longitudinally adjustable water inlet chamber is provided at the water inlet end of the central water inlet pipe. Specifically, the water inlet chamber extends along the height of the dishwasher, vertically penetrating the water inlet end of the central water inlet pipe, and the chamber is a long and narrow channel with a rectangular cross-section.
[0053] Furthermore, the sealing frame 31 is provided with a plurality of through holes 310 arranged along the height direction. For ease of explanation, this embodiment uses two through holes as an example. These two through holes are defined as the first through hole 3101 and the second through hole 3102, respectively, to correspond to different water flow paths. Each through hole 310 is embedded with an independent sealing ring 32.
[0054] Furthermore, a sealing element 33 is connected to the water outlet side of the sealing frame 31 near the middle water inlet pipe. The main body of the sealing element 33 covers the area of the through hole 310. An elastic baffle 331 is integrated on the sealing element 33. Each baffle 331 is directly opposite a through hole 310 and can be covered or removed from the hole by relative rotation.
[0055] In one possible implementation, the sealing frame 31 is provided with a snap-fit groove 311, and the sealing element 33 is provided with a snap-fit protrusion 332. The snap-fit protrusion 332 snaps into the snap-fit groove 311 to achieve the connection between the two.
[0056] Furthermore, to facilitate connection with the central water inlet pipe, a connecting pipe is also provided on the rear water inlet pipe, which extends toward the central water inlet pipe.
[0057] The connecting pipe can be inserted into either the first through hole 3101 or the second through hole 3102 according to the height adjustment requirements: for example, the first through hole 3101 of the middle spray pipe is aligned with the connecting pipe, the connecting pipe passes through the first through hole 3101 and pushes open the corresponding baffle 331 and is then inserted into the bottom of the water inlet chamber to establish a low-level water passage; or, the second through hole 3102 of the middle spray pipe is aligned with the connecting pipe, the connecting pipe passes through the second through hole 3102 and pushes open the corresponding baffle 331 and extends to the upper part of the water inlet chamber to form a high-level communication path.
[0058] By setting two through holes 310 at the top and bottom of the sealing component 3, and by using the connection pipe in conjunction with different through holes 310, the height of the middle water inlet pipe can be adjusted conveniently and efficiently, enabling the dishwasher to adapt to different application scenarios.
[0059] In one embodiment, reference Figure 2 In the diagram, point A indicates the situation when the first baffle plate 3311 opens the first through hole 3101. At this time, the middle water inlet pipe is in a low position, and the connecting pipe pushes the first baffle plate 3311 open to allow water to enter the middle water inlet pipe. Point B in the diagram indicates the situation when the second baffle plate 3312 closes the second through hole 3102. At this time, the second baffle plate 3312 is pressed against the sealing ring 32 under the action of water pressure to prevent water from overflowing from this point.
[0060] In one embodiment, to further optimize the synergistic sealing between the sealing ring 32 and the baffle plate 331, the sealing ring 32 extends out of the through hole 310 and abuts against the sealing member 33, and the end of the sealing ring 32 near the sealing member 33 is designed as an inclined surface 322. Correspondingly, the surface of the sealing member 33 facing the sealing ring 32 is designed as an arc-shaped surface that can cooperate with the inclined surface 322.
[0061] When the baffle 331 is closed, the inclined surface 322 and the arc-shaped surface form a progressive contact area. Compared with the traditional planar mating method, the contact between the inclined surface 322 and the arc-shaped surface can make the pressure distribution more uniform, avoid the stress concentration phenomenon that may occur when the planar contact occurs, and thus reduce the risk of sealing failure caused by excessive local pressure.
[0062] The dishwasher provided in this application is equipped with the aforementioned spray structure. Because this spray structure has significant features and advantages such as preventing leakage and providing good sealing, the water flow in the dishwasher's water inlet pipe can be delivered more stably, thereby improving the dishwasher's spraying effect.
[0063] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.
Claims
1. A spray structure, characterized in that, include: first tube body(1); The second tube (2) is connected to the first tube (1); A sealing assembly (3) is disposed at the connection between the first tube body (1) and the second tube body (2). The sealing assembly (3) includes a sealing frame (31) and a sealing ring (32) disposed on the sealing frame (31). The sealing frame (31) and the sealing ring (32) are integrally formed. The first tube body (1) passes through the sealing ring (32) and communicates with the second tube body (2).
2. The spray structure according to claim 1, characterized in that, The sealing ring (32) includes a clamping part (321), and the outer peripheral wall of the first tube (1) abuts against the clamping part (321).
3. The spray structure according to claim 2, characterized in that, The inner diameter of the clamping part (321) gradually decreases toward the side where the second tube (2) is located.
4. The spray structure according to claim 2, characterized in that, The sealing frame (31) is provided with a plurality of through holes (310), and each through hole (310) is provided with a corresponding sealing ring (32). The sealing assembly (3) further includes: A sealing element (33) is connected between the second pipe body (2) and the sealing frame (31) to seal the connection between the sealing frame (31) and the second pipe body (2). The sealing element (33) includes a baffle plate (331), which closes the through hole (310) in its natural state and can rotate relative to the sealing element (33) under external force to open the through hole (310).
5. The spray structure according to claim 4, characterized in that, The sealing ring (32) abuts against the sealing element (33).
6. The spray structure according to claim 5, characterized in that, The sealing ring (32) has an inclined surface (322) at the end near the sealing member (33), and the water baffle (331) is in contact with the inclined surface (322).
7. The spray structure according to claim 4, characterized in that, The sealing frame (31) is provided with a snap-fit groove (311), and the sealing element (33) is provided with a snap-fit protrusion (332), which snaps into the snap-fit groove (311).
8. The spray structure according to claim 1, characterized in that, The sealing ring (32) is made of an elastic material.
9. The spray structure according to any one of claims 1 to 8, characterized in that, The second tube body (2) is provided with an annular groove (20), and the sealing component (3) is disposed in the annular groove (20).
10. A dishwasher, characterized in that, Includes the spray structure as described in any one of claims 1 to 9.