Spraying shell and spraying arm structure

Abstract

The utility model relates to a spraying shell and a spraying arm structure, and belongs to the field of household appliances. The utility model relates to an injection shell, which is characterized by comprising a water inlet shell, a water outlet shell and a water outlet shell, the water inlet shell is arranged on the lower spraying arm shell, and the lower spraying arm shell is provided with a water inlet; the upper spraying arm shell is arranged on the lower spraying arm shell, the upper spraying arm shell and the lower spraying arm shell define a spraying cavity, the upper spraying arm shell is provided with a first spraying hole and a second spraying hole which are communicated with the spraying cavity, the water inlet channel, the water inlet and the spraying cavity are sequentially communicated, and the sectional area of the first spraying hole is smaller than that of the second spraying hole. According to the spraying shell, when water flows into a first spraying hole and a second spraying hole, the water flow speed can be remarkably increased, then a water column is sprayed at a higher speed and powerfully acts on the surface of an object to be cleaned, the cleaning task is efficiently completed, and the cleaning ratio is remarkably increased.

Description

Technical Field

[0001] This utility model relates to the field of household appliances, and in particular to a spray housing and spray arm structure. Background Technology

[0002] In existing technology, the spray nozzles of dishwashers lack a pressurization structure, resulting in low water pressure when the water is sprayed from the nozzles. This low pressure makes it difficult to effectively remove food residue or stubborn grease when washing dishes. To achieve better cleaning results, it may be necessary to extend the dishwasher's cleaning cycle or increase the number of washes. This leads to longer dishwasher operating times, increased water and electricity consumption, and increased waste of energy and water resources. Utility Model Content

[0003] Therefore, it is necessary to provide a spray housing and spray arm structure to address the issue that the spray holes in the spray arm structure of the dishwasher lack a pressurization structure.

[0004] A spray housing includes: a water inlet housing with a water inlet channel; a lower spray arm housing with the water inlet housing disposed on the lower spray arm housing and having a water inlet; and an upper spray arm housing disposed on the lower spray arm housing and the two together forming a spray cavity. The upper spray arm housing has a first spray hole and a second spray hole communicating with the spray cavity. The water inlet channel, the water inlet, and the spray cavity are sequentially connected. The cross-sectional area of ​​the first spray hole is smaller than the cross-sectional area of ​​the second spray hole.

[0005] The above-disclosed spray housing forms a spray chamber by fitting an upper spray arm housing and a lower spray arm housing together. Water can enter from the water inlet channel of the water inlet housing and then enter the spray chamber through the water inlet. Because the cross-sectional area of ​​the first and second spray holes is much smaller than that of the spray chamber, according to the principles of fluid mechanics and the Venturi principle, when the water flows from the spray chamber with a larger cross-sectional area to the first and second spray holes with a smaller cross-sectional area, the water flow velocity will increase significantly, thus allowing the water column to be sprayed at a faster speed and forcefully act on the surface of the object to be cleaned. As the water flow velocity increases, the water jet pressure also increases simultaneously. The high-pressure water flow has a stronger penetrating ability, which can penetrate into the tiny gaps between dirt and the object being cleaned, effectively removing stubborn stains, greatly improving the depth and comprehensiveness of cleaning, and ensuring a more thorough cleaning. In addition, the upper spray arm housing is provided with multiple first and second spray holes, forming a distributed layout. Numerous dispersed first and second jet nozzles allow water to cover a large area to be cleaned from multiple directions, effectively increasing the contact area between water and dirt and eliminating cleaning dead spots. Simultaneously, the cross-sectional area of ​​the first jet nozzle is smaller than that of the second jet nozzle, creating water flows with varying cleaning power suitable for various cleaning scenarios. The larger cross-sectional area of ​​the second jet nozzle drives the rotation of the spray housing and cleans tableware, while the smaller cross-sectional area of ​​the first jet nozzle provides powerful cleaning, allowing the water jet to be sprayed at a faster speed and forcefully act on the surface of the object to be cleaned. The faster spray speed, stronger spray pressure, and wider contact area between water and dirt work together to provide a more powerful rinsing force. Whether it's sticky grease, dried food residue, or fine dust particles, they can all be quickly removed from the object under this powerful rinsing, efficiently completing the cleaning task, significantly improving the cleaning ratio, and creating a superior cleaning experience for users.

[0006] In one embodiment, the cross-sectional area of ​​the first spray orifice gradually decreases along the direction away from the lower spray arm housing. By gradually reducing the cross-sectional area of ​​the first spray orifice along the direction away from the lower spray arm housing, according to the Venturi principle, the water flow velocity gradually increases as the cross-sectional area decreases, and the pressure increases accordingly. The further away from the lower spray arm housing the water flow is, the higher the pressure it can exert on the dirt, effectively cleaning areas that are far from the water source, difficult to clean, or crevices and curved surfaces, ensuring consistent cleaning results.

[0007] In one embodiment, the cross-sectional area of ​​the second spray orifice gradually decreases along the direction away from the lower spray arm housing. By gradually reducing the cross-sectional area of ​​the second spray orifice away from the lower spray arm housing, according to the Venturi principle, the water flow velocity gradually increases as the cross-sectional area decreases, and the pressure correspondingly increases. The further away from the lower spray arm housing the water flow is, the higher the pressure it can exert on the dirt, addressing areas that are far from the water source and difficult to clean, ensuring consistent cleaning results. This also avoids the high-energy-consumption mode of continuous high-pressure water supply, rationally distributing water pressure according to the cleaning process, ensuring cleaning quality while achieving efficient energy utilization, reducing operating costs, and improving the cost-effectiveness of the equipment.

[0008] In one embodiment, there are multiple first spray holes, which spiral outwards from the rotation center of the upper spray arm housing in a direction opposite to the rotation direction of the spray housing. By spiraling outwards from the upper spray arm housing, the coverage of the water flow is greatly expanded. Compared to conventional uniformly distributed spray holes, this spiral layout allows the water flow to cover the area to be cleaned in a dynamic and thorough manner, based on the rotation characteristics of the spray housing, achieving comprehensive coverage from the center to the edge and effectively reducing the possibility of cleaning blind spots. On the other hand, the arrangement direction of the first spray holes is opposite to the rotation direction of the spray housing. This design allows the water flow to gain additional impact power on top of its original jetting force due to the relative motion with the rotation of the housing, thereby enhancing its ability to remove various types of stains. Whether it is stubborn oil stains or residue on complex surface structures, the water flow can remove them more efficiently with stronger impact force. The spiral-shaped diffused nozzles make the contact process between water and dirt more three-dimensional and multi-dimensional, impacting dirt from all directions and angles, effectively improving the cleaning ratio, thereby meeting users' pursuit of high-quality cleaning results and bringing a better cleaning experience.

[0009] In one embodiment, the upper spray arm housing includes an upper spray shell assembly and an upper spray sidewall. The upper spray shell assembly is disposed on the upper spray sidewall, and the upper spray sidewall is disposed on the lower spray arm housing. The upper spray shell assembly is provided with first spray holes and second spray holes, and the number of first spray holes and second spray holes is multiple. By disposing the upper spray shell assembly on the upper spray sidewall, and the upper spray sidewall on the lower spray arm housing, the structure of the upper spray arm housing is stably supported. Numerous first and second spray holes enable precise and large-area cleaning operations. During the cleaning process, multiple spray holes work simultaneously, spraying water from different directions to fully cover the object to be cleaned, avoiding any missed areas and greatly increasing the coverage of a single cleaning, ensuring thorough cleaning without any blind spots. Simultaneously, the multi-spray hole layout allows for flexible adjustment of the water pressure and flow rate of each hole according to cleaning needs, adapting to different stain conditions and efficiently removing various stubborn dirt.

[0010] In one embodiment, the upper spray shell assembly includes an upper spray shell body and spray columns. The upper spray shell body is disposed on the upper spray sidewall and has multiple first spray holes and multiple mounting holes. Multiple spray columns are disposed on the upper spray shell body and correspondingly positioned at the mounting holes. Each spray column has a second spray hole. By directly connecting the upper spray shell body to the upper spray sidewall, a stable and reliable support foundation is provided for the entire assembly, ensuring that a precise spray angle is maintained even under high-speed rotation and strong water flow impact, thus guaranteeing the stability of the cleaning effect. The multiple first spray holes on the upper spray shell body, combined with the second spray holes of the spray columns, spray water onto dishes from all directions, achieving large-area coverage without dead corners. Furthermore, the water flow parameters of each hole can be intelligently adjusted according to the distribution and stubbornness of the stains, ensuring precise and efficient removal of oil, food residue, and dust. Multiple mounting holes, combined with a corresponding number of jet columns, allow the jet columns to function as independent water flow enhancement units. This further refines the direction of water jets, enabling thorough cleaning of hard-to-reach areas such as crevices and gaps, greatly improving the precision of cleaning and meeting ever-evolving cleaning needs. This continuously creates an exceptional cleaning experience for users.

[0011] In one embodiment, multiple spray columns are evenly distributed on both sides of the upper spray shell body, with the orientation of the multiple spray columns on both sides opposite to the rotation direction of the upper spray sidewall. By evenly distributing multiple spray columns on both sides of the upper spray shell body, and their orientation being opposite to the rotation direction of the upper spray sidewall, the spray columns on both sides spray strictly in a predetermined direction during equipment operation, achieving precise control of the water flow spray path. This ensures that every part of the side of the object being cleaned, whether it is a concave area or a convex part, can be evenly covered by the water flow, completely eliminating the blind spots that were previously prone to occur in side cleaning, and comprehensively expanding the overall cleaning range, making the cleaning work more comprehensive and without dead angles. At the same time, the cross-sectional area of ​​the second spray hole on the spray column is much smaller than the cross-sectional area of ​​the spray chamber. According to the principles of fluid mechanics and the Venturi principle, when the water flow rushes into the second spray hole from the spray chamber with a larger cross-sectional area, the flow velocity will increase sharply due to the sudden contraction of space, and the water pressure will also increase rapidly. In this way, the high-speed water jet from the second nozzle, carrying a powerful impact, directly targets the stains. For stubborn dirt clinging tightly to crevices, crevices, and minute surface details, its powerful force effectively removes it. This not only greatly enhances the precision of cleaning, reaching previously inaccessible corners, but also significantly improves the overall cleaning effect, providing a strong guarantee for efficient cleaning.

[0012] In one embodiment, the upper spray shell and the spray column are integrally formed. By integrally forming the upper spray shell and the spray column, the overall structural integrity is greatly improved. Under the high-speed rotation of the equipment and the strong impact of the water flow, there is no risk of loosening of the connection gaps or separation of parts, ensuring the stability and continuity of the cleaning process and effectively avoiding water spray deviation caused by structural loosening. At the same time, the integral forming simplifies the production process, reduces the number of parts assembly steps, lowers production costs while improving production efficiency, and facilitates mass production and market promotion of the product.

[0013] In one embodiment, the upper spray shell assembly and the upper spray sidewall are integrally formed. By integrally forming the upper spray shell assembly and the upper spray sidewall, they can withstand greater water flow impact and vibration during equipment operation, ensuring smooth cleaning operations and preventing uneven water spraying or leakage due to loose connections, thus greatly improving the reliability of the cleaning effect. Simultaneously, the production process is optimized, reducing assembly steps, saving labor and material costs, accelerating production, and facilitating rapid product launches and enhanced market competitiveness.

[0014] In one embodiment, the water inlet housing and the lower spray arm housing are integrally formed. By integrally forming the water inlet housing and the lower spray arm housing, the high-frequency impact of water flow can be effectively resisted. Even in complex and variable water pressure environments, it remains stable, eliminating the risk of cracking and leakage due to weak connections. This ensures stable operation of the cleaning process and consistent cleaning results. The convenience of later maintenance is significantly improved, eliminating the need for frequent inspection and maintenance of the connection points, reducing the probability of failure, and decreasing repair time and costs, providing users with a more durable and high-quality user experience.

[0015] In one embodiment, the spray column is angled. By angled, the water jet direction is no longer limited to a single plane, allowing it to reach areas that are difficult to access with conventional vertical sprays, such as the concave sides or curved backs of the object being cleaned. This significantly expands the overall cleaning coverage, reduces blind spots, and improves the thoroughness of the cleaning. Simultaneously, the angled water jet forms an angle with the surface to be cleaned, resulting in a more diverse distribution of impact force compared to vertical water flow. This provides a dual peeling effect on stains, both laterally and longitudinally, and is particularly effective at removing stubborn oil stains and dried residue, enhancing cleaning power.

[0016] In one embodiment, the upper spray sidewall includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall. The first, second, third, and fourth sidewalls are sequentially and tangentially connected and all are disposed on the upper spray shell assembly. The first and third sidewalls are each formed by two arc-shaped segments with different opening directions connected tangentially. The first, second, third, and fourth sidewalls are integrally formed. By sequentially and tangentially connecting the sidewalls and integrally forming them, the overall mechanical strength is greatly enhanced. Facing the centrifugal force generated during high-speed rotation and the continuous impact of water flow, this integrated structure prevents cracking at connection seams or displacement of components, ensuring the stable operation of the upper spray arm shell, ensuring accurate cleaning, and maintaining consistently high-efficiency cleaning results. From a water flow guiding perspective, the first and third sidewalls are tangentially connected by arc-shaped segments with openings at both ends in different directions. This cleverly guides the water flow to change direction, allowing it to naturally change course along the arc of the sidewalls. Combined with multiple first and second spray holes, this provides multi-directional and multi-angle water spray. The arc-shaped sidewalls with openings in different directions allow the water flow to reach every corner during its turning, while the numerous spray holes ensure even water coverage. These two elements work synergistically to achieve comprehensive and thorough cleaning of the area, greatly improving the cleaning effect and removing all kinds of stubborn stains. In the manufacturing process, the one-piece molding reduces assembly steps, lowers costs, improves efficiency, and facilitates rapid mass production. The simple structure also makes subsequent maintenance much easier, reducing time costs and continuously optimizing the user experience.

[0017] In one embodiment, the lower spray arm housing includes a lower spray base shell and a lower spray sidewall. The lower spray sidewall is disposed on the lower spray base shell, and the water inlet shell is disposed on the lower spray base shell, with the lower spray base shell having the water inlet. By mounting the lower spray sidewall on the lower spray base shell, the two fit together tightly, constructing a stable support structure. During equipment operation, even when facing the strong impact of water flow and vibrations caused by high-speed rotation, the stability of the lower spray arm housing can be ensured, making the water inlet position fixed and ensuring smooth and unobstructed water intake, providing a stable water supply for the entire cleaning process. Furthermore, the water inlet shell is directly disposed on the lower spray base shell, reducing unnecessary connecting parts and allowing water to quickly enter the spray chamber from the water inlet channel of the water inlet shell, supporting the efficient operation of the spray shell.

[0018] In one embodiment, the lower spray sidewall is arc-shaped, and the upper spray arm housing is arc-shaped, with the arc-shaped segments of the lower spray sidewall and the upper spray arm housing matched. By matching the arc-shaped segments of the lower spray sidewall and the upper spray arm housing, on the one hand, the two fit tightly together, resulting in a smoother overall appearance and a more natural transition in the internal water flow channels. This prevents turbulence and disturbances caused by structural abruptness during the water flow from the lower spray arm housing to the upper spray arm housing, ensuring stable water delivery and preventing energy loss. This, in turn, guarantees uniform water flow intensity from each spray nozzle. Both the first spray nozzle on the upper spray arm housing and the second spray nozzle on the spray column function reliably and precisely impact every corner of the object to be cleaned, thoroughly removing stains and improving the stability and continuity of the cleaning process. On the other hand, the precisely matched arc-shaped segments optimize space utilization, reduce unnecessary gaps, and make the overall equipment more compact, comprehensively improving the user experience.

[0019] In one embodiment, the lower spray base shell and the lower spray sidewall are integrally formed. By integrally forming the lower spray base shell and the lower spray sidewall, the overall strength of the lower spray arm housing is significantly enhanced. Facing the strong centrifugal force from high-speed rotation and the continuous impact of water flow, there is no risk of cracking at the connection seams, ensuring stable operation of the spray device and providing a solid foundation for precise cleaning. Simultaneously, when water enters the lower spray base shell, it can smoothly diffuse from all sides of the lower spray base shell to the lower spray sidewall, thereby driving the spray housing to rotate efficiently, making the cleaning process uniform and effective.

[0020] The second aspect of this application discloses a spray arm structure, which includes: the above-mentioned spray housing; a connector disposed on the spray housing and used for connecting to an external structure; and an air inlet sleeve disposed on the spray housing and located between the connector and the spray housing.

[0021] The second aspect disclosed above discloses a spray arm structure for a dishwasher. By setting a connector for connection to an external structure on the spray housing, and clamping an air intake sleeve between the connector and the spray housing, on the one hand, the connector is directly connected to the spray housing, providing a reliable fixed support for the air intake sleeve. Even when the equipment is running at high speed and subjected to water flow impact, the three are tightly connected without displacement or loosening, ensuring the coordinated stability of the air intake and water spray system and ensuring stable progress of the cleaning operation. On the other hand, the air intake sleeve, located between the connector and the spray housing, can accurately introduce external air, which is fully mixed with the water flow and then sprayed out from the spray hole, forming an atomized effect of gas-liquid mixed flow. This not only increases the impact force of the water flow, resulting in better rinsing of stubborn stains, but also has a wider coverage area for the atomized effect, reaching deep into cleaning areas of various complex shapes, thus improving overall cleaning efficiency. Attached Figure Description

[0022] Figure 1 This is a first perspective view of the spray arm structure;

[0023] Figure 2 This is a second perspective view of the spray arm structure;

[0024] Figure 3 for Figure 2 A magnified view of a portion of region A;

[0025] Figure 4 This is a cross-sectional view of the injection casing;

[0026] Figure 5 for Figure 4 A magnified view of a portion of region B;

[0027] Figure 6 A perspective view of the water inlet housing and the lower spray arm housing;

[0028] Figure 7 This is a first perspective view of the upper spray arm housing;

[0029] Figure 8 This is a second perspective view of the upper spray arm housing;

[0030] Figure 9 for Figure 8 A magnified view of a portion of region C;

[0031] Figure 10 This is a cross-sectional view of the upper spray arm housing;

[0032] Figure 11 for Figure 10 A magnified view of a portion of region D.

[0033] The correspondence between the reference numerals and the component names is as follows:

[0034] 1. Water inlet shell; 101. Water inlet channel;

[0035] 2. Lower spray arm housing, 21. Lower spray bottom housing, 22. Lower spray side wall, 201. Water inlet;

[0036] 3 Upper spray arm housing, 31 Upper spray housing assembly, 311 Upper spray housing body, 312 Spray column, 32 Upper spray sidewall, 321 First sidewall, 322 Second sidewall, 323 Third sidewall, 324 Fourth sidewall, 301 Spray chamber, 302 First spray hole, 303 Mounting hole, 304 Second spray hole. Detailed Implementation

[0037] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0038] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0039] The spray housing and spray arm structures of some embodiments of the present invention are described below with reference to the accompanying drawings.

[0040] Example 1

[0041] like Figures 1 to 11 As shown, this embodiment discloses a spray housing, including: a water inlet housing 1, which includes a water inlet channel 101; a lower spray arm housing 2, which is disposed on the lower spray arm housing 2 and has a water inlet 201; and an upper spray arm housing 3, which is disposed on the lower spray arm housing 2 and the two together form a spray cavity 301. The upper spray arm housing 3 has a first spray hole 302 and a second spray hole 304 that communicate with the spray cavity 301. The water inlet channel 101, the water inlet 201, and the spray cavity 301 are connected in sequence. The cross-sectional area of ​​the first spray hole 302 is smaller than the cross-sectional area of ​​the second spray hole 304.

[0042] This application discloses a spray housing. By fitting the upper spray arm housing 3 and the lower spray arm housing 2 together to form a spray chamber 301, water can enter from the water inlet channel 101 of the water inlet housing 1 and then from the water inlet 201 into the spray chamber 301. Because the cross-sectional areas of the first spray hole 302 and the second spray hole 304 are much smaller than the cross-sectional area of ​​the spray chamber 301, according to fluid mechanics principles and the Venturi principle, when the water flows from the larger cross-sectional area of ​​the spray chamber 301 to the smaller cross-sectional areas of the first spray hole 302 and the second spray hole 304, the water flow velocity will significantly increase, allowing the water column to be sprayed at a faster speed and forcefully act on the surface of the object to be cleaned. As the water flow velocity increases, the water jet pressure also increases simultaneously. The high-pressure water flow has stronger penetrating power, capable of reaching deep into the tiny gaps between dirt and the object being cleaned, effectively removing stubborn stains, greatly improving the depth and comprehensiveness of cleaning, and ensuring a more thorough cleaning. Furthermore, the upper spray arm housing 3 is equipped with multiple first spray holes 302 and second spray holes 304, forming a distributed layout. The numerous dispersed first spray holes 302 and second spray holes 304 allow water to cover a large area to be cleaned from multiple directions, effectively increasing the contact area between water and dirt and eliminating cleaning dead zones. Simultaneously, the cross-sectional area of ​​the first spray holes 302 is smaller than that of the second spray holes 304, resulting in water flows with varying cleaning power, suitable for various cleaning scenarios. The larger cross-sectional area of ​​the second spray holes 304 is used to drive the spray housing to rotate and clean tableware, while the smaller cross-sectional area of ​​the first spray holes 302 is used for powerful cleaning, allowing the water jet to spray at a faster speed and forcefully act on the surface of the object to be cleaned. The faster spray speed, stronger spray pressure, and wider contact area between water and dirt work together to give the water flow a stronger rinsing force. Whether it's sticky grease, dried food residue, or fine dust particles, this powerful rinse can quickly remove them from the object being cleaned, efficiently completing the cleaning task, significantly improving the washing ratio, and creating a superior cleaning experience for users.

[0043] like Figure 10 and Figure 11 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the cross-sectional area of ​​the first spray hole 302 gradually decreases along the direction away from the lower spray arm housing 2. By gradually reducing the cross-sectional area of ​​the first spray hole 302 along the direction away from the lower spray arm housing 2, according to the Venturi principle, as the water flows through the spray hole, the flow velocity gradually increases and the pressure correspondingly increases. The further away from the lower spray arm housing 2 the water flow is, the higher the pressure it can impact the stains, effectively cleaning areas that are far from the water source and difficult to clean, or crevices and curved surfaces, ensuring consistent cleaning results.

[0044] like Figure 10 and Figure 11As shown, in addition to the features of the above embodiments, this embodiment further specifies that the cross-sectional area of ​​the second spray hole 304 gradually decreases along the direction away from the lower spray arm housing 2. By gradually reducing the cross-sectional area of ​​the second spray hole 304 along the direction away from the lower spray arm housing 2, according to the Venturi principle, as the water flows through the spray hole, the flow velocity gradually increases and the pressure correspondingly increases. The further away from the lower spray arm housing 2 the water flow is, the higher the pressure it can impact the stains, addressing areas that are far from the water source and difficult to clean, ensuring consistent cleaning results. It also avoids the high-energy-consumption mode of continuous high-pressure water supply, rationally distributing water pressure according to the cleaning process, ensuring cleaning quality while achieving efficient energy utilization, reducing operating costs, and improving the cost-effectiveness of the equipment.

[0045] like Figure 2 and Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the number of first spray holes 302 is multiple, and the multiple first spray holes 302 are spirally diffused to both sides in the opposite direction to the rotation direction of the spray housing, starting from the rotation center of the upper spray arm housing 3. By spirally diffusing the multiple first spray holes 302 to both sides of the upper spray arm housing 3, the coverage of the water flow is greatly expanded. Compared with the conventional uniformly distributed spray hole form, this spiral layout can, according to the rotation characteristics of the spray housing, allow the water flow to cover the area to be cleaned in a dynamic and dead-angle-free mode, achieving full coverage from the center to the edge, and effectively reducing the possibility of cleaning blind spots. On the other hand, the arrangement direction of the first spray holes 302 is opposite to the rotation direction of the spray housing. This design allows the water flow to obtain additional impact bonus on the basis of its original spray power due to the relative motion with the rotation of the housing, thereby enhancing the ability to remove various stains. Whether it is stubborn oil stains or residues on complex surface structures, the water flow can remove them more efficiently with stronger impact force. The spiral-shaped diffused nozzles make the contact process between water and dirt more three-dimensional and multi-dimensional, impacting dirt from all directions and angles, effectively improving the cleaning ratio, thereby meeting users' pursuit of high-quality cleaning results and bringing a better cleaning experience.

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 7 Figure 8 and Figure 9As shown, in addition to the features of the above embodiments, this embodiment further defines: the upper spray arm housing 3 includes an upper spray shell assembly 31 and an upper spray sidewall 32. The upper spray shell assembly 31 is disposed on the upper spray sidewall 32, and the upper spray sidewall 32 is disposed on the lower spray arm housing 2. The upper spray shell assembly 31 is provided with a first spray hole 302 and a second spray hole 304, and the number of first spray holes 302 and second spray holes 304 is multiple. By disposing the upper spray shell assembly 31 on the upper spray sidewall 32 and the upper spray sidewall 32 on the lower spray arm housing 2, the structure of the upper spray arm housing 3 is stably supported. The numerous first spray holes 302 and second spray holes 304 enable refined and large-area cleaning operations. During the cleaning process, multiple spray holes work simultaneously, spraying water from different directions to fully cover the object to be cleaned, avoiding any water leakage areas, greatly improving the coverage of a single cleaning, and ensuring thorough cleaning without any dead corners. Meanwhile, the multi-jet nozzle layout allows for flexible adjustment of water pressure and flow rate in each nozzle according to cleaning needs, adapting to different stain conditions and effectively removing various stubborn dirt.

[0047] like Figure 2 , Figure 3 , Figure 8 and Figure 9 As shown, in addition to the features of the above embodiments, this embodiment further defines: the upper spray shell assembly 31 includes an upper spray shell body 311 and spray columns 312. The upper spray shell body 311 is disposed on the upper spray sidewall 32. The upper spray shell body 311 is provided with a plurality of first spray holes 302 and a plurality of mounting holes 303. The number of spray columns 312 is plurality of, and the plurality of spray columns 312 are disposed on the upper spray shell body 311 and are correspondingly disposed at the plurality of mounting holes 303. The spray columns 312 are provided with second spray holes 304. By directly connecting the upper spray shell body 311 to the upper spray sidewall 32, a stable and reliable support foundation is provided for the entire assembly, ensuring that a precise spray angle can still be maintained under high-speed rotation and strong water flow impact, thus ensuring the stability of the cleaning effect. Multiple first spray holes 302 on the upper spray housing 311, combined with second spray holes 304 on the spray columns 312, provide all-around water spray to the dishes, achieving large-area coverage without dead corners. Furthermore, the system intelligently adjusts the water flow parameters of each hole based on the distribution and stubbornness of the stains, ensuring precise and efficient removal of oil, food residue, and dust. Multiple mounting holes 303, paired with a corresponding number of spray columns 312, allow each spray column 312 to function as an independent water flow enhancement unit, further refining the water spray direction and deeply cleaning hard-to-reach areas such as crevices and recesses. This significantly improves cleaning precision, meeting ever-evolving cleaning needs and continuously creating an exceptional cleaning experience for users.

[0048] like Figure 8 and Figure 9As shown, in addition to the features of the above embodiments, this embodiment further specifies that: multiple spray columns 312 are evenly distributed on both sides of the upper spray shell body 311, and the orientation of the multiple spray columns 312 on both sides is opposite to the rotation direction of the upper spray sidewall 32. By evenly distributing multiple spray columns 312 on both sides of the upper spray shell body 311, and their orientation being opposite to the rotation direction of the upper spray sidewall 32, the spray columns 312 on both sides spray strictly in a predetermined direction during equipment operation, achieving precise control of the water flow spray path. This ensures that every part of the side of the object being cleaned, whether it is a concave area or a protruding part, can be evenly covered by the water flow, completely eliminating the blind spots in side cleaning that were previously prone to occur, comprehensively expanding the overall cleaning range, and making the cleaning work more comprehensive and without dead angles. Meanwhile, the cross-sectional area of ​​the second spray hole 304 on the spray column 312 is much smaller than that of the spray chamber 301. Based on fluid dynamics and the Venturi principle, when water flows from the larger spray chamber 301 into the second spray hole 304, the flow velocity increases dramatically due to the sudden contraction of space, and the water pressure also increases rapidly. As a result, the high-speed water jet from the second spray hole 304, carrying a strong impact, directly targets the stains. For stubborn dirt tightly adhering to crevices, gaps, and fine details on surfaces, it can be effectively removed with its powerful force. This not only greatly improves the precision of cleaning, reaching previously inaccessible corners, but also significantly enhances the overall cleaning effect, providing a strong guarantee for efficient cleaning.

[0049] like Figure 8 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the upper spray shell body 311 and the spray column 312 are integrally formed. By integrally forming the upper spray shell body 311 and the spray column 312, the overall structural integrity is greatly improved. Under the high-speed rotation of the equipment and the strong impact of the water flow, there is no risk of loosening of the connection gaps or separation of parts, ensuring the stability and continuity of the cleaning process and effectively avoiding water flow spray deviation caused by structural loosening. At the same time, integral forming simplifies the production process, reduces the number of parts assembly steps, reduces production costs while improving production efficiency, and facilitates mass production and market promotion of products.

[0050] like Figure 7As shown, in addition to the features of the above embodiments, this embodiment further specifies that the upper spray shell assembly 31 and the upper spray sidewall 32 are integrally formed. By integrally forming the upper spray shell assembly 31 and the upper spray sidewall 32, it can withstand greater water flow impact and vibration during equipment operation, ensuring stable cleaning operations and preventing uneven water spraying or leakage problems due to loose connection between the two, greatly improving the reliability of the cleaning effect. At the same time, the production process is optimized, reducing assembly steps, saving labor and material costs, accelerating the production pace, helping products to be quickly launched to the market, and enhancing market competitiveness.

[0051] like Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the water inlet housing 1 and the lower spray arm housing 2 are integrally formed. By integrally forming the water inlet housing 1 and the lower spray arm housing 2, the high-frequency impact of water flow can be effectively resisted. Even in complex and variable water pressure environments, it remains stable, eliminating the risk of cracking and leakage due to weak connection points, ensuring stable operation of the cleaning process, and guaranteeing consistent cleaning results. The convenience of later maintenance is significantly improved, eliminating the need for frequent inspection and maintenance of connection points, reducing the probability of failure, and decreasing repair time and cost, providing users with a more durable and high-quality user experience.

[0052] like Figure 8 and Figure 9 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the spray column 312 is inclined. By inclinedly setting the spray column 312, the water jet direction is no longer limited to a single plane, and can cover areas that are difficult to reach with conventional vertical spraying, such as the concave sides of the object being cleaned, the back with a certain curvature, etc., greatly expanding the overall cleaning coverage, reducing cleaning dead corners, and improving the comprehensiveness of cleaning. At the same time, the inclined spray water forms a certain angle with the surface to be cleaned, and compared with vertical water flow, the decomposition direction of the impact force is more diverse, producing a dual peeling effect on stains in both the lateral and longitudinal directions. Especially for strongly adhesive oil stains and dried residues, it can wash them off more efficiently, enhancing the cleaning ability.

[0053] like Figure 7 and Figure 8As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the upper spray sidewall 32 includes a first sidewall 321, a second sidewall 322, a third sidewall 323, and a fourth sidewall 324. The first sidewall 321, the second sidewall 322, the third sidewall 323, and the fourth sidewall 324 are sequentially tangentially connected and all disposed on the upper spray shell assembly 31. The first sidewall 321 and the third sidewall 323 are each formed by two arc-shaped segments with different opening directions connected tangentially. The first sidewall 321, the second sidewall 322, the third sidewall 323, and the fourth sidewall 324 are integrally formed. By sequentially connecting the sidewalls tangentially and integrally forming them, the overall mechanical strength is greatly enhanced. Facing the centrifugal force generated during high-speed rotation and the continuous impact of water flow, this integrated structure will not experience cracking of connection gaps or displacement of components, ensuring the stable operation of the upper spray arm shell, ensuring accurate cleaning process, and maintaining a consistently high-efficiency cleaning effect. From the perspective of water flow guidance, the first sidewall 321 and the third sidewall 323 are tangentially connected by arc-shaped segments with different opening directions at both ends. This cleverly guides the water flow to change direction, allowing it to naturally turn along the arc of the sidewall. Combined with multiple first spray holes 302 and second spray holes 304, water is sprayed from multiple directions and angles. The arc-shaped sidewalls with openings in different directions allow the water flow to reach every corner during its turning, while the numerous spray holes ensure even water coverage. These two elements complement each other, achieving a comprehensive and thorough cleaning of the area, greatly improving the cleaning effect and removing all kinds of stubborn stains. In the manufacturing process, the one-piece molding reduces assembly steps, lowers costs, improves efficiency, and facilitates rapid mass production. Subsequent maintenance is also significantly more convenient due to the simple structure, reducing time costs and continuously optimizing the user experience.

[0054] like Figure 1 and Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further defines: the lower spray arm housing 2 includes a lower spray bottom housing 21 and a lower spray sidewall 22. The lower spray sidewall 22 is disposed on the lower spray bottom housing 21, and the water inlet housing 1 is disposed on the lower spray bottom housing 21. The lower spray bottom housing 21 is provided with a water inlet 201. By installing the lower spray sidewall 22 on the lower spray bottom housing 21, the two fit together tightly to form a stable support structure. During equipment operation, even when facing the strong impact of water flow and the vibration caused by high-speed rotation, the stability of the lower spray arm housing 2 can be guaranteed, making the water inlet position fixed and ensuring smooth and unobstructed water intake, providing a stable water supply for the entire cleaning process. Secondly, the water inlet housing 1 is directly disposed on the lower spray bottom housing 21, reducing unnecessary connecting parts, allowing water to quickly enter the spray chamber 301 from the water inlet channel 101 of the water inlet housing 1, providing support for the efficient operation of the spray housing.

[0055] like Figure 1 , Figure 2 and Figure 6As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the lower spray sidewall 22 is arc-shaped, the upper spray arm housing 3 is arc-shaped, and the arc-shaped segment of the lower spray sidewall 22 matches the arc-shaped segment of the upper spray arm housing 3. By matching the arc-shaped segment of the lower spray sidewall 22 with the arc-shaped segment of the upper spray arm housing 3, on the one hand, in terms of structural fit, the two fit tightly, making the appearance lines of the entire spray device smoother, the internal water flow channel transition naturally, and the water flow from the lower spray arm housing 2 to the upper spray arm housing 3 will not cause turbulence or disturbance due to structural abruptness, ensuring stable water delivery and no energy loss, thereby ensuring that the water flow from each spray hole is uniform in intensity. Both the first spray hole 302 on the upper spray arm housing 3 and the second spray hole 304 on the spray column 312 can function stably, accurately impacting every corner of the object to be cleaned, thoroughly removing stains, and improving the stability and continuity of cleaning. On the other hand, precisely matched arc segments help optimize space utilization, reduce unnecessary gaps, make the overall equipment more compact, and comprehensively improve the user experience.

[0056] like Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the lower spray base shell 21 and the lower spray sidewall 22 are integrally formed. By integrally forming the lower spray base shell 21 and the lower spray sidewall 22, the overall strength of the lower spray arm shell 2 is greatly enhanced. Facing the strong centrifugal force brought by high-speed rotation and the continuous impact of water flow, there is no risk of cracking at the connection seams, ensuring stable operation of the spray device and providing a solid foundation for precise cleaning. Simultaneously, when water flows into the lower spray base shell 21, it can smoothly diffuse from the periphery of the lower spray base shell 21 to the lower spray sidewall 22, thereby driving the spray shell to rotate efficiently, making the cleaning process uniform and effective.

[0057] Example 2

[0058] like Figures 1 to 11 As shown, this embodiment discloses a spray arm structure, including: the above-mentioned spray housing; a connector disposed on the spray housing and used for connecting with an external structure; and an air inlet sleeve disposed on the spray housing and located between the connector and the spray housing.

[0059] The second aspect of this application discloses a spray arm structure for a dishwasher. By placing a connector for connection to an external structure on the spray housing, and clamping an air intake sleeve between the connector and the spray housing, the connector and spray housing are directly connected, providing a reliable fixed support for the air intake sleeve. Even when the equipment operates at high speed and is subjected to water flow impact, the three are tightly connected without displacement or loosening, ensuring the coordinated stability of the air intake and water spray systems and ensuring stable cleaning operation. Furthermore, the air intake sleeve, positioned between the connector and the spray housing, can precisely introduce external air, which is then fully mixed with the water flow and sprayed out from the spray nozzle, forming an atomized air-liquid mixture. This not only increases the impact force of the water flow, resulting in better rinsing of stubborn stains, but also provides a wider atomization coverage area, reaching various complex-shaped cleaning areas and improving overall cleaning efficiency.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A jet housing, characterized in that The spray shell comprises: a water inlet shell (1) comprising a water inlet channel (101); a lower spray arm shell (2) on which the water inlet shell (1) is arranged, the lower spray arm shell (2) being provided with a water inlet opening (201); an upper spray arm shell (3) arranged on the lower spray arm shell (2) and enclosing a spray cavity (301) with the lower spray arm shell (2), the upper spray arm shell (3) being provided with a first spray hole (302) and a second spray hole (304) in communication with the spray cavity (301), the water inlet channel (101), the water inlet opening (201) and the spray cavity (301) being in sequence communication, and the cross-sectional area of the first spray hole (302) being smaller than that of the second spray hole (304).

2. The spray shell according to claim 1, wherein: the cross-sectional area of the first spray hole (302) gradually decreases in a direction away from the lower spray arm shell (2); and / or the cross-sectional area of the second spray hole (304) gradually decreases in a direction away from the lower spray arm shell (2). The number of the first spray holes (302) is multiple, and the multiple first spray holes (302) are spirally spread to both sides in a direction opposite to the rotation direction of the spray shell from the center of rotation of the upper spray arm shell (3).

3. The jet housing of claim 1, wherein, The upper spray arm shell (3) comprises an upper spray shell assembly (31) and an upper spray side wall (32), the upper spray shell assembly (31) is arranged on the upper spray side wall (32), the upper spray side wall (32) is arranged on the lower spray arm shell (2), the upper spray shell assembly (31) is provided with the first spray hole (302) and the second spray hole (304), and the number of the first spray hole (302) and the second spray hole (304) is multiple.

4. The jet housing of claim 1, wherein, The upper spray shell assembly (31) comprises an upper spray shell body (311) and a spray column (312), the upper spray shell body (311) is arranged on the upper spray side wall (32), the upper spray shell body (311) is provided with multiple first spray holes (302) and multiple mounting holes (303), the number of the spray column (312) is multiple, the multiple spray columns (312) are arranged on the upper spray shell body (311) and are arranged one by one at the multiple mounting holes (303), and the spray column (312) is provided with the second spray hole (304).

5. The jet housing of claim 4, wherein, The multiple spray columns (312) are evenly arranged on both sides of the upper spray shell body (311), and the directions of the multiple spray columns (312) on both sides are opposite to the rotation direction of the upper spray side wall (32).

6. The jet housing of claim 5, wherein, 7. The spray shell according to claim 5, wherein: the upper spray shell body (311) and the spray column (312) are integrally formed; and / or the upper spray shell assembly (31) and the upper spray side wall (32) are integrally formed. ​ And / or the water inlet shell (1) and the lower spray arm shell (2) are integrally formed; And / or the spray column (312) is obliquely arranged; And / or the upper spray sidewall (32) comprises a first sidewall (321), a second sidewall (322), a third sidewall (323) and a fourth sidewall (324), the first sidewall (321), the second sidewall (322), the third sidewall (323) and the fourth sidewall (324) are tangentially connected in sequence and are arranged on the upper spray shell assembly (31), the first sidewall (321) and the third sidewall (323) are tangentially connected by two arc segments with different opening directions, and the first sidewall (321), the second sidewall (322), the third sidewall (323) and the fourth sidewall (324) are integrally formed.

8. The jet housing of claim 1, wherein, The lower spray arm shell (2) comprises a lower spray bottom shell (21) and a lower spray sidewall (22), the lower spray sidewall (22) is arranged on the lower spray bottom shell (21), the water inlet shell (1) is arranged on the lower spray bottom shell (21), and the lower spray bottom shell (21) is provided with the water inlet (201).

9. The spray shell according to claim 8, wherein, The lower spray sidewall (22) is arc-shaped, the upper spray arm shell (3) is arc-shaped, and the arc-shaped segment of the lower spray sidewall (22) is arranged in matching with the arc-shaped segment of the upper spray arm shell (3); And / or the lower spray bottom shell (21) and the lower spray sidewall (22) are integrally formed.

10. A spray arm structure characterized by, The spray arm structure comprises: The spray shell according to any one of claims 1 to 9; A connecting piece arranged on the spray shell, the connecting piece being used for connecting with an external structure; An air inlet sleeve arranged on the spray shell and located between the connecting piece and the spray shell.

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