Spraying arm of dish washing machine and dish washing machine

Abstract

The utility model provides a dish-washing machine spraying arm and a dish-washing machine, and belongs to the technical field of household appliances. The spraying arm of the dish washing machine comprises a spraying arm main body and a spraying hole body, a spraying hole is formed in the spraying hole body; an opening is formed in the upper side of the spraying arm body, and the spraying hole body is clamped to the opening in a matched mode, so that a spraying arm inner cavity is defined by the spraying arm body and the spraying hole body. The spraying arm main body and the spraying hole body are matched and clamped, so that the spraying hole body can be conveniently and quickly disassembled, a user can easily clean the spraying hole, food residues and water scales are prevented from being accumulated, the spraying efficiency is maintained, and the service life of the dish washing machine is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a dishwasher spray arm and a dishwasher provided with the spray arm. Background Art

[0002] With the advancement of technology and the accelerated pace of life, dishwashers, as a representative product of home appliances, are becoming increasingly popular in thousands of households, shouldering the important task of freeing hands and improving the quality of life. The working principle of dishwashers mainly relies on the spray arm system to spray water efficiently and evenly to achieve the purpose of quickly washing dishes. However, the existing dishwasher spray arm design still faces several challenges, which limits its performance optimization.

[0003] Traditional spray arm designs usually adopt integrated molding. Although this structure has the advantage of simple manufacturing, it has exposed many disadvantages in actual application. First, the internal space of the spray arm is limited, and the water spray hole is small. Once foreign objects such as food residues enter, it is extremely difficult to clean. Over time, it will clog the spray hole, affecting the spray effect and reducing the cleaning efficiency. Secondly, because the material is mostly hard plastic, it is easy to age and crack after being impacted by high-pressure water for a long time, shortening the service life. Furthermore, the fixed structure of the spray arm is inconvenient to disassemble, and it is difficult for users to maintain it by themselves. Once a failure occurs, professional intervention is often required, which increases the maintenance cost and inconvenience. Utility Model Content

[0004] In view of the above problems, the utility model provides a dishwasher spray arm which is easy to disassemble and maintain and does not affect the structural strength and sealing performance of the spray arm.

[0005] A first aspect provides a dishwasher spray arm, comprising: a spray arm body and a spray hole body;

[0006] The spray hole body is provided with a spray hole;

[0007] An opening is arranged on the upper side of the spray arm body, and the spray hole body is adapted to be snap-fitted at the opening, so that the spray arm body and the spray hole body are enclosed to form a spray arm inner cavity.

[0008] Furthermore, the nozzle body is made of elastic material.

[0009] Furthermore, a clamping groove adapted to the opening is provided on the circumference of the spray hole body;

[0010] The clamping connection between the spray hole body and the spray arm body is achieved through the adaption clamping connection between the clamping groove and the opening.

[0011] Furthermore, it also includes a support body, which is arranged at the opening, connected to the spray arm body, and abuts against the inner side of the spray hole body.

[0012] Furthermore, the support body is multiple,

[0013] A plurality of the supporting bodies are arranged at intervals.

[0014] Further, the support body includes a support stop and a support boss;

[0015] The two ends of the support stop are respectively fixedly connected to the edges of the opening;

[0016] The support boss is disposed on a side of the support stop close to the spray hole body, so that the support boss abuts against the spray hole body.

[0017] Furthermore, the supporting boss is arranged in the middle of the supporting position.

[0018] Furthermore, the supporting boss and the injection hole are arranged in a staggered manner.

[0019] Further, the spray arm body includes a first spray arm body and a second spray arm body that are fixedly connected;

[0020] The first spray arm body is located above the second spray arm body, and the opening is arranged on the first spray arm body;

[0021] The first spray arm body is adapted and snap-fitted with the spray hole body, so that the first spray arm body, the second spray arm body and the spray hole body are enclosed to form a spray arm inner cavity.

[0022] Furthermore, the first spray arm body and the second spray arm body are fixed by hot plate welding.

[0023] A second aspect provides a dishwasher, comprising a dishwasher spray arm as described in any of the above technical solutions.

[0024] The embodiments of the present invention have the following advantages or beneficial effects:

[0025] 1. The spray hole body is made of elastic material. The adapter card design between the spray arm body and the spray hole body allows the spray hole body to be disassembled conveniently and quickly. Users can easily clean the spray hole to avoid the accumulation of food residues and scale, maintain the spray efficiency, and extend the service life of the dishwasher.

[0026] 2. The snap-on design between the spray hole body and the spray arm body allows the spray arm body to be quickly adjusted or replaced according to different dishwasher models and needs, increasing the versatility and adaptability of the design.

[0027] 3. The split design of the spray arm body (the combination of the first spray arm body and the second spray arm body), combined with hot plate welding fixation, not only simplifies the production and assembly process, but also facilitates precise adjustment and replacement, thereby improving production flexibility and efficiency.

[0028] 4. The clip-on structure cooperates with the layout of the support body to ensure the sealing performance of the dishwasher spray arm after assembly, effectively avoiding water leakage that may occur during the cleaning process, protecting other parts of the dishwasher, reducing potential electrical safety risks, and also improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and other features and advantages of the present invention will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

[0030] Figure 1 is a schematic structural diagram of a spray arm of a dishwasher according to an exemplary embodiment;

[0031] Figure 2 is a schematic diagram of a spray arm main structure of a spray arm of a dishwasher according to an exemplary embodiment;

[0032] Figure 3 yes Figure 2 A magnified view of part A in FIG.

[0033] Figure 4 is a schematic diagram showing the structure of a spray hole body of a spray arm of a dishwasher according to an exemplary embodiment;

[0034] Figure 5 is a schematic diagram showing a partial structure of a spray hole body of a spray arm of a dishwasher according to an exemplary embodiment;

[0035] Figure 6 yes Figure 5 A magnified view of part B in FIG.

[0036] Figure 7 is a cross-sectional view of a spray arm of a dishwasher according to an exemplary embodiment Figure 1 ;

[0037] Figure 8 is a cross-sectional view of a spray arm of a dishwasher according to an exemplary embodiment Figure 2 ;

[0038] Fig. 9 yes Figure 8 Enlarged view of section C in .

[0039] The reference numerals are described as follows:

[0040] 1. Spray arm body; 2. Spray hole body; 3. Spray hole; 4. Opening; 5. Snap-in groove; 6. Support body;

[0041] 11. First spray arm body; 12. Second spray arm body;

[0042] 61. Supporting gear position; 62. Supporting boss. DETAILED DESCRIPTION

[0043] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0044] The terms "a", "an", "the", and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0045] Figure 1 is a schematic structural diagram of a spray arm of a dishwasher according to an exemplary embodiment; Figure 2 is a schematic diagram of a spray arm main structure of a spray arm of a dishwasher according to an exemplary embodiment;

[0046] Figure 3 yes Figure 2 A magnified view of part A in FIG. Figure 4 is a schematic diagram showing the structure of a spray hole body of a spray arm of a dishwasher according to an exemplary embodiment; Figure 5 is a schematic diagram showing a partial structure of a spray hole body of a spray arm of a dishwasher according to an exemplary embodiment; Figure 6 This is an enlarged view of part B in 5; Figure 7 is a cross-sectional view of a spray arm of a dishwasher according to an exemplary embodiment Figure 1 ; Figure 8 is a cross-sectional view of a spray arm of a dishwasher according to an exemplary embodiment Figure 2 ; Fig. 9 This is an enlarged view of part C in 8. The above schematic diagram is not intended to be the actual scale of the actual product.

[0047] like Figures 1 to 9 As shown, a dishwasher spray arm of an embodiment of the utility model comprises: a spray arm body 1 and a spray hole body 2; a spray hole 3 is arranged on the spray hole body 2; an opening 4 is arranged on the upper side of the spray arm body 1, and the spray hole body 2 is adapted to be snapped into the opening 4, so that the spray arm body 1 and the spray hole body 2 are enclosed to form a spray arm inner cavity.

[0048] The spray arm body 1 serves as a water flow diversion system, responsible for evenly distributing the high-pressure water flow pumped from the dishwasher to the spray hole body 2, ensuring that each spray hole 3 can spray efficiently to achieve a comprehensive cleaning effect.

[0049] The spray arm body 1 is usually made of high temperature resistant and chemical corrosion resistant engineering plastics, such as ABS or PP materials. These materials have good mechanical strength and can work stably for a long time under high temperature and high pressure environments, while remaining lightweight and easy to produce and process and user operation.

[0050] The spray body 2 is made of elastic material, which is an important innovation. The use of elastic materials (such as rubber or specific polymer materials) makes the spray body 2 have better durability and impact resistance. The elastic property means that even if it is subjected to long-term impact of high-pressure water flow, the spray body 2 can maintain good shape recovery ability, reduce deformation or damage caused by material fatigue, and extend the service life. At the same time, the use of elastic materials also provides sufficient flexibility for the spray body 2, which is convenient for users to disassemble and install, and convenient for daily maintenance and cleaning.

[0051] The spray hole body 2 is provided with spray holes 3, which are the outlets of the water flow. When designing, they are carefully arranged according to the spray efficiency and cleaning requirements to ensure that the water flow can be sprayed evenly and forcefully onto the surface of the tableware to achieve the best cleaning effect. The size, number and layout of the spray holes 3 are all precisely calculated and experimentally verified to balance the coverage and impact of the water flow to adapt to tableware of different types and degrees of dirtiness.

[0052] The spray hole body 2 is connected to the spray arm body 1 by means of an adapter and a snap-fit ​​design, which allows the spray hole body 2 to be quickly and conveniently combined with or separated from the spray arm body 1. The snap-fit ​​design of the spray arm body 1 and the spray hole body 2 allows the user to easily disassemble the spray hole body 2 for cleaning, effectively avoiding the accumulation of food residues and scale, avoiding clogging and the problem of difficult cleaning in the traditional integrated design, and extending the service life of the dishwasher. It also enhances the maintainability and replaceability of the spray arm structure.

[0053] The design of the spray hole body 2 combines multiple advantages such as easy disassembly and assembly, efficient cleaning, stable structure and good sealing, which significantly improves the user experience of the dishwasher. In addition, the versatility and adaptability of the design also provide convenience for dishwashers of different models and needs, improving production efficiency and flexibility. In short, the design innovation of the spray hole body 2 is the key to improving the performance of the dishwasher and the user experience.

[0054] In one embodiment, an opening 4 is provided on the upper side of the spray arm body 1; a snap-in groove 5 adapted to the opening 4 is provided circumferentially of the spray hole body 2; the spray hole body 2 and the spray arm body 1 are snap-fitted by the adapted snap-fitting of the snap-in groove 5 and the opening 4.

[0055] The position and size of the opening 4 are carefully designed to ensure the convenience of installation and to ensure that the structural strength of the spray arm body 1 is not affected.

[0056] The edge of the spray hole body 2 is specially provided with a snap-in groove 5 matching the opening 4 of the spray arm body 1. The design of the snap-in groove 5 ensures that the spray hole body 2 can be tightly and firmly connected to the spray arm body 1 to form a stable interface, thereby avoiding loosening or falling off due to water pressure shock during cleaning.

[0057] The spray hole body 2 is adapted and snap-fitted with the opening 4 of the spray arm body 1 through the snap-fit ​​groove 5 on its edge. This means that the spray hole body 2 can be accurately embedded in the opening 4 of the spray arm body 1 and is fixed by the snap-fit ​​structure without the need for additional fasteners such as screws or clips. This design not only simplifies the installation process, but also makes it easy for users to quickly disassemble the spray hole body 2 for cleaning or replacement when necessary, effectively solving the blockage problem caused by the difficulty in cleaning the spray hole 3 in traditional designs.

[0058] The clamping design of the spray arm body 1 and the spray hole body 2 reflects the dual consideration of user convenience and product durability. It not only simplifies the maintenance process and prolongs the service life of the dishwasher, but also improves the overall sealing and cleaning efficiency of the spray arm through the optimized structural design, avoids potential water leakage and other problems, and ensures the safety and reliability of the dishwasher operation.

[0059] In one embodiment, the spray arm body 1 includes a first spray arm body 11 and a second spray arm body 12; the first spray arm body 11 is fixedly connected to the second spray arm body 12. The first spray arm body 11 is located above the second spray arm body 12, and the opening 4 is provided on the first spray arm body 11. The first spray arm body 11 is adapted to be snap-fitted with the spray hole body 2, so that the first spray arm body 11, the second spray arm body 12 and the spray hole body 2 are enclosed to form a spray arm inner cavity.

[0060] The first spray arm body 11 and the second spray arm body 12 are fixed by hot plate welding.

[0061] The spray arm body 1 adopts a split design, consisting of a first spray arm body 11 and a second spray arm body 12. This design makes production and manufacturing more flexible and facilitates assembly and quality control in large-scale production. The split design is also conducive to logistics and transportation, because the split parts are easier to carry and store than the integral structure.

[0062] The first spray arm body 11 and the second spray arm body 12 are connected in a fixed manner to ensure that the two form a stable whole. This connection method is crucial for the spray arm to withstand the impact of high-pressure water flow during operation. It can maintain the structural strength of the spray arm and avoid separation or deformation caused by vibration or water pressure during the cleaning process.

[0063] The first spray arm body 11 and the second spray arm body 12 are fixed by a hot plate welding process.

[0064] Hot plate welding is a welding technology widely used for plastic materials, especially thermoplastics such as polypropylene PP, polyethylene PE, polycarbonate PC, ABS (acrylonitrile-butadiene-styrene copolymer), etc. This welding method melts and combines the plastic materials by heating to form a strong and durable weld. This process ensures a high-strength connection of the spray arm body 1, good durability, and good sealing of the welding part, effectively preventing water leakage during the cleaning process.

[0065] Since the first spray arm body 11 and the second spray arm body 12 are fixed by hot plate welding, the material of the first spray arm body 11 and the second spray arm body 12 should be thermoplastic. Specifically, it may be one of the materials mentioned above, or other plastic materials with similar hot melt properties. These materials are selected not only because they are suitable for hot plate welding process, but also because they usually have good chemical corrosion resistance, wear resistance and certain mechanical strength, which are particularly important for dishwasher spray arms, and can ensure structural stability and functional reliability in high temperature, humidity and long-term contact with detergent environment.

[0066] The material of the first spray arm body 11 and the second spray arm body 12 is likely to be polycarbonate PC, because it has good transparency and impact resistance, and can withstand the high temperature and high pressure water environment when the dishwasher is in operation; or ABS, because it combines good hardness, toughness, chemical resistance and processability, and is often used in the housing and structural parts of home appliances. Other possibilities include polypropylene PP with good heat resistance or polyethylene PE with excellent electrical insulation and weather resistance, depending on the manufacturer's requirements for specific performance indicators such as cost, strength, and transparency.

[0067] In one embodiment, a support body 6 is further included. The support body 6 is disposed at the opening 4 , connected to the spray arm body 1 , and abuts against the inner side of the spray hole body 2 .

[0068] The support body 6 is arranged at the opening 4 of the spray arm body 1 and connected thereto, which can effectively enhance the stability of the connection between the spray hole body 2 and the spray arm body 1. Especially under the high-speed rotation of the spray arm and the impact of high-pressure water flow, the support body 6 can prevent the spray hole body 2 from being displaced or falling off due to external force, thereby ensuring the continuity and reliability of the spray arm operation.

[0069] The close contact between the support body 6 and the spray hole body 2 reduces the damage of the spray arm body 1 caused by vibration or collision during use, and prevents the spray hole body 2 from being deformed during the cleaning process. The water pressure inside the dishwasher is ensured to be stable, the cleaning efficiency is improved, and water is prevented from leaking to the outside of the dishwasher, protecting the electronic components and other parts of the dishwasher from water damage.

[0070] When the spray arm is working, a higher local pressure will be generated at the spray hole 3. The existence of the support body 6 can disperse this part of the pressure to avoid stress concentration at a certain point, thereby extending the service life of the spray arm and reducing material fatigue or damage caused by excessive pressure.

[0071] There are multiple supports 6, and the multiple supports 6 are arranged at intervals. The design of the supports 6 arranged at intervals takes into account the convenience of later maintenance. When it is necessary to clean the inside of the spray arm, the user can easily check and clean the area around each support 6 and the inner cavity of the spray arm to prevent the accumulation of impurities such as food residues and scale, keep the spray hole 3 unobstructed, and ensure the long-term and efficient operation of the spray arm.

[0072] In another embodiment, the support body 6 includes a support stop 61 and a support boss 62; both ends of the support stop 61 are fixedly connected to the edges of the opening 4 respectively; a support boss 62 is provided on one side of the support stop 61 close to the spray hole body 2, so that the support boss 62 abuts against the spray hole body 2.

[0073] The support stop 61 is designed as a strip structure with a certain length and width, with both ends fixed to the edges of the opening 4 of the spray arm body 1, and its function is to provide a stable support platform to ensure that the support body 6 can be firmly installed in the predetermined position.

[0074] The support boss 62 is located on the side of the support stop 61 facing the nozzle body 2 and is usually a small protruding structure. Its shape is designed according to the contour and contact surface of the nozzle body 2 to ensure that it fits completely with the surface of the nozzle body 2, thereby achieving the purpose of support and sealing.

[0075] The support body 6 is usually made of a material compatible with the spray arm body 1 to ensure good connection and durability between the two. The most commonly used manufacturing process is injection molding. This method can accurately replicate the shape of the designed mold, ensure the dimensional accuracy and surface finish of the support body 6, and is also convenient for mass production.

[0076] The support boss 62 is arranged in the middle of the support stop 61. The support boss 62 in the middle position is easy to be in close contact with the spray hole body 2.

[0077] The support boss 62 is staggered with the spray hole 3 to avoid directly blocking the water flow, ensuring that the water flow will not directly hit the support boss 62 when passing through the spray hole 3, thereby avoiding the change of water flow direction and energy loss, ensuring the linearity and strength of the water flow spray, and improving the cleaning efficiency.

[0078] A dishwasher according to an embodiment of the utility model comprises the dishwasher spray arm as described in any of the above embodiments.

[0079] In addition to the spray arm structure described in the above embodiment, it also includes a variety of key components and systems that work together to complete the automatic cleaning task of tableware. The following are some basic components of the dishwasher and their brief descriptions:

[0080] Water tank and pump system: The dishwasher has a built-in water tank to store the water needed for washing and rinsing. The pump system includes a water supply pump and a drainage pump. The former is responsible for pressurizing the water in the water tank and spraying it onto the dishes through the spray arm system, while the latter is responsible for discharging the wastewater after washing.

[0081] Control panel: Usually located on the front of the dishwasher, it allows users to set parameters such as the washing program, temperature, drying mode, etc. Modern dishwashers mostly use electronic control panels with clear displays and easy operation.

[0082] Washing chamber: The main chamber of the dishwasher, divided into two or more layers of racks, used to place dishes to be washed. The interior is usually equipped with adjustable baskets or racks to accommodate different sizes and types of dishes.

[0083] Filtration system: Located at the bottom of the cleaning chamber, it is used to collect food residues and fine particles to prevent these substances from recirculating into the injection system, ensuring the water quality is clean. It is also a key part of maintaining the cleanliness of the dishwasher.

[0084] Heating element: used to heat the water for washing and rinsing. High temperature water can break down grease more effectively, improve the cleaning effect, and also help to dry dishes quickly.

[0085] Door and seal: The dishwasher door is designed with a seal to ensure water tightness during the cleaning process and prevent water vapor from leaking out.

[0086] Drying system: Some high-end dishwasher models will be equipped with a drying system, which may use hot air drying, condensation drying or automatic door drying to ensure that the dishes are dry.

[0087] Sensors and controllers: used to monitor and control the temperature, water level, cleaning cycle, etc. inside the dishwasher to ensure that the cleaning program is accurately executed according to preset parameters.

[0088] Spray arm rotation mechanism: In addition to the spray arm itself, the dishwasher also contains a motor or mechanical device that drives the spray arm to rotate, ensuring that the spray arm can fully cover the tableware in every corner of the chamber during the cleaning process.

[0089] These components work together to ensure that the dishwasher can efficiently and automatically complete the washing, rinsing and drying processes of dishes, providing users with a convenient user experience.

[0090] In the embodiments of the present invention, the term "multiple" refers to two or more than two, unless otherwise clearly defined. The terms "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0091] In the description of the embodiments of the present invention, it is necessary to understand that the terms "upper" and "lower" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the embodiments of the present invention.

[0092] In the description of this specification, the description of the terms "one embodiment", "a preferred embodiment", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0093] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dishwasher spray arm, characterized in that: include: A spray arm body (1) and a spray hole body (2); The spray hole body (2) is provided with a spray hole (3); An opening (4) is provided on the upper side of the spray arm body (1), and the spray hole body (2) is adapted to be snap-fitted to the opening (4), so that the spray arm body (1) and the spray hole body (2) enclose an inner cavity of the spray arm.

2. A dishwasher spray arm according to claim 1, characterized in that: The spray hole body (2) is made of elastic material.

3. A dishwasher spray arm according to claim 1 or 2, characterized in that: The circumferential edge of the spray hole body (2) is provided with a snap-in groove (5) adapted to the opening (4); The spout hole body (2) and the spray arm body (1) are spouted together by the adaption and spouting of the spouting groove (5) and the opening (4).

4. A dishwasher spray arm according to claim 3, characterized in that: It also comprises a support body (6), which is arranged at the opening (4), connected to the spray arm body (1), and abuts against the inner side of the spray hole body (2).

5. A dishwasher spray arm according to claim 4, characterized in that: There are a plurality of support bodies (6), and the plurality of support bodies (6) are arranged at intervals.

6. A dishwasher spray arm according to claim 4, characterized in that: The support body (6) comprises a support stop (61) and a support boss (62); The two ends of the support stop (61) are respectively fixedly connected to the edges of the opening (4); The support boss (62) is provided on a side of the support stop (61) close to the spray hole body (2), so that the support boss (62) abuts against the spray hole body (2).

7. A dishwasher spray arm according to claim 6, characterized in that: The supporting boss (62) is arranged in the middle of the supporting stop (61).

8. A dishwasher spray arm according to claim 6, characterized in that: The supporting boss (62) and the injection hole (3) are arranged in a staggered manner.

9. A dishwasher spray arm according to claim 1 or 2, characterized in that: The spray arm body (1) comprises a first spray arm body (11) and a second spray arm body (12) which are fixedly connected; The first spray arm body (11) is located above the second spray arm body (12), and the opening (4) is arranged on the first spray arm body (11); The first spray arm body (11) is adapted to be snap-fitted with the spray hole body (2), so that the first spray arm body (11), the second spray arm body (12) and the spray hole body (2) enclose a spray arm inner cavity.

10. A dishwasher spray arm according to claim 9, characterized in that: The first spray arm body (11) and the second spray arm body (12) are fixed by hot plate welding.

11. A dishwasher, characterized in that: It comprises the dishwasher spray arm as claimed in any one of claims 1 to 10.

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