Gushing arm assembly and dish washing machine

Abstract

The utility model relates to a spraying arm assembly and a dish-washing machine and belongs to the field of dish-washing machines. The spraying arm assembly comprises a liquid supply main arm, a spraying arm, a liquid supply pipe, a liquid supply pipe, a liquid supply pipe, a liquid supply pipe, a liquid supply pipe, a liquid supply pipe and a liquid supply pipe, and is characterized in that the liquid supply main arm is provided with a liquid supply cavity and a liquid outlet communicated with the liquid supply cavity; the limiting assembly is arranged on the liquid supply main arm and located at the liquid outlet; the spraying arm is provided with a liquid passing cavity, a first liquid spraying hole communicating with the liquid passing cavity is formed in the spraying arm, the spraying arm is arranged on the limiting assembly and can rotate relative to the limiting assembly, and the limiting assembly communicates with the liquid supply cavity and the liquid passing cavity. According to the spraying arm assembly, the limiting assembly communicates with the liquid supply cavity and the liquid passing cavity, and therefore precise control over liquid supply is achieved. The spraying arm is arranged on the limiting assembly and can rotate relative to the limiting assembly, the relative rotation design allows the spraying arm to freely move within a certain range, and the cleaning flexibility is improved.

Description

Technical Field

[0001] The utility model relates to the field of dishwashers, in particular to a spray arm assembly and a dishwasher. Background Art

[0002] At the current technical level, there are a series of problems with the installation structure between the main spray arm and the auxiliary spray arm of the dishwasher. First, the structure is relatively complex, which brings great difficulties to installation and maintenance. Secondly, the sealing effect of the installation structure is not ideal, which easily leads to water leakage and has an adverse effect on the normal operation of the dishwasher. Utility Model Content

[0003] Based on this, it is necessary to provide a spray arm assembly and a dishwasher to address the problems of relatively complex structure, difficult installation and maintenance.

[0004] A spray arm assembly, the spray arm assembly comprising: a liquid supply main arm, the liquid supply main arm is provided with a liquid supply cavity, the liquid supply main arm is provided with a liquid outlet connected to the liquid supply cavity; a limit assembly, the limit assembly is arranged on the liquid supply main arm and located at the liquid outlet; a spray arm, the spray arm is provided with a liquid passage cavity, the spray arm is provided with a first liquid spray hole connected to the liquid passage cavity, the spray arm is arranged on the limit assembly and can rotate relative to the limit assembly, and the limit assembly is respectively connected to the liquid supply cavity and the liquid passage cavity.

[0005] The present application discloses a spray arm assembly, which realizes the control of the liquid supply of the spray arm by providing a liquid supply cavity on the liquid supply main arm and connecting with the liquid outlet. The limit assembly is arranged on the liquid supply main arm, and the limit assembly is arranged at the liquid outlet. The limit assembly is connected with the liquid supply cavity and the liquid passage cavity respectively, so as to realize the precise control of the liquid supply and improve the accuracy and stability of the liquid spray. The spray arm is arranged on the limit assembly and can rotate relative to the limit assembly. This relative rotation design allows the spray arm to move freely within a certain range, which helps to adapt to different cleaning needs and improves the flexibility and applicability of cleaning. The spray arm is provided with a liquid passage cavity, and the spray arm can realize a more delicate and uniform liquid spray by connecting with the first liquid spray hole. The design of the liquid passage cavity helps to optimize the flow of liquid in the spray arm, ensure that better liquid spray performance can be obtained when the liquid is discharged from the first liquid spray hole, and improve the cleaning effect. The spray arm assembly disclosed in the present invention realizes the precise control of liquid supply and liquid spray, optimizes the liquid spray performance, and improves the accuracy and applicability of motion control, thereby improving the performance of the overall cleaning system.

[0006] In one embodiment, one of the limiting assembly and the liquid supply main arm is provided with a limiting convex rib, and the other of the limiting assembly and the liquid supply main arm is provided with a first limiting groove, and the limiting convex rib is inserted into the first limiting groove. The limiting convex rib is inserted into the first limiting groove, so that the spray arm can be accurately limited. The engagement of the limiting convex rib and the first limiting groove ensures the accuracy and reliability of the limit, and prevents the limiting assembly from unnecessary shaking or position change during use, thereby maintaining the stability of the spray arm during operation, helping to ensure a more consistent cleaning effect of the spray arm and improving the overall performance of the dishwasher.

[0007] In one embodiment, the material of the limit component is POM polyformaldehyde resin or PA polyamide, and the material of the liquid supply main arm and the spray arm is PP polypropylene material. POM polyformaldehyde resin, PA polyamide or PP polypropylene are all lightweight materials with good strength, and the hardness of POM polyformaldehyde resin or PA polyamide is higher than that of PP polypropylene. The limit component is made of nylon hard glue, while the liquid supply main arm and the spray arm are made of PP polypropylene. Compared with directly integrating the limit component and the liquid supply main arm into one piece, the combination of POM or PA materials with better durability can improve the strength of the overall structure of the limit component and the liquid supply main arm. At the same time, since the material of the limit component and the spray arm are different, the abnormal noise of the two can be reduced during rotation.

[0008] In one embodiment, the liquid supply main arm and the limit assembly are formed by secondary injection molding. Through secondary injection molding, the liquid supply main arm and the limit assembly can form a tightly integrated structure, which can ensure that the combination between the two components is more solid, reduce the gap between the components, reduce the possibility of friction and looseness between the parts, and help improve the overall stability and durability of the spray arm assembly. Since the liquid supply main arm and the limit assembly are completed at one time through secondary injection molding, the number of parts and assembly steps required in the assembly process are reduced. This helps to reduce the assembly cost on the dishwasher production line and improve production efficiency. Compared with directly molding the two into one, the use of a higher strength limit assembly and liquid supply main arm secondary injection molding can improve the overall structural strength and increase the service life.

[0009] In one embodiment, the limiting rib is an annular protrusion, and the first limiting groove is an annular groove. Since the limiting rib is an annular protrusion and the first limiting groove is an annular groove, this design enables the limiting assembly to perform a full-scale seal on the liquid supply main arm. The annular protrusion provides a larger contact area, and the cooperation with the annular groove enables the limiting assembly to obtain better stability in different positions, which helps to reduce shaking, improve the overall structural stability, and prevent the normal operation of the dishwasher from being affected by unstable movement.

[0010] In one embodiment, the limit assembly includes a limit base and a limit cover, the limit base is arranged on the liquid supply main arm, the limit base is provided with a liquid passage, the limit base is provided with a liquid outlet notch connected to the liquid passage, the spray arm is sleeved on the limit base, the liquid passage cavity of the spray arm is connected to the liquid outlet notch, the limit cover is arranged on the limit base, and the spray arm is clamped between the limit cover and the liquid supply main arm. By providing the liquid passage and the liquid outlet notch, a smooth passage is provided for the liquid, ensuring that the liquid in the liquid supply main arm can effectively flow to the liquid passage cavity of the spray arm, thereby ensuring the normal liquid supply of the spray arm assembly. The spray arm is sleeved on the limit base and clamped between the spray arm and the liquid supply main arm to form a stable assembly structure, which helps to ensure that the spray arm can be limited at a specified position during use and improves the accuracy of cleaning. Since the limit cover is arranged on the limit base and the spray arm is clamped between the limit cover and the liquid supply main arm, this structural design simplifies the assembly and disassembly process. Users can easily maintain, clean or replace the spray arm, which improves the maintainability of the equipment.

[0011] In one embodiment, the limiting base includes a connecting column and a limiting rib, the hole wall of the liquid outlet of the liquid supply main arm is provided with a first limiting groove, the limiting rib is arranged on the connecting column, the limiting rib extends into the first limiting groove, the connecting column is provided with the liquid passage, the connecting column is provided with the liquid outlet notch, and the spray arm is sleeved on the connecting column. The limiting rib extends into the first limiting groove, which ensures a firm connection between the limiting base and the liquid supply main arm, prevents swinging or deviation during use, helps to ensure that the liquid can accurately flow out of the liquid outlet, and improves the stability and performance of the dishwasher. The connecting column is provided with a liquid passage and a liquid outlet notch, which ensures that the liquid can flow unimpeded inside the limiting base. This helps to keep the liquid supply channel unobstructed, ensures that the spray arm can be fully supplied with liquid, and improves the cleaning effect of the dishwasher.

[0012] In one embodiment, the connecting column includes a first support ring, a rib, a second support ring and a stopper, the number of the ribs is multiple, the two ends of the multiple ribs are connected to the first support ring and the second support ring respectively, the multiple ribs are spaced to form the liquid outlet gap, the stopper is arranged on the second support ring, the stopper is limited by the stopper cover, and the stopper convex rib is arranged on the first support ring. The first support ring and the second support ring are connected by multiple ribs to form a connecting column with a stable structure, which ensures that the connecting column is not easy to deform or loosen during use, and enhances its overall stability. The intervals between the multiple ribs form a liquid outlet gap, through which the liquid can effectively flow from the connecting column to the liquid supply main arm, improve the uniformity of the liquid supply, and help improve the cleaning performance of the dishwasher. The stopper is arranged on the second support ring and is limited by the stopper cover. This design enables the stopper cover to stably limit the range of motion of the spray arm and facilitates the removal of the stopper cover.

[0013] In one embodiment, the limit cover includes a cover plate, a support column, a locking block and a convex rib, the support column is arranged on the cover plate, the locking block is arranged on the support column, the locking block is adapted to be installed with the connecting column, the convex rib is arranged on the support column, a second limit groove is provided on the connecting column, the convex rib is adapted to be installed with the second limit groove, and the convex rib can be inserted into the second limit groove or be removed from the second limit groove. Through the adaptive installation of the locking block combined with the connecting column, a reliable limit structure is formed, which helps to ensure that the spray arm maintains a stable position during use and improves the operating reliability of the dishwasher. Through the adaptation of the convex rib and the second limit groove, the limit cover can reliably limit the connecting column.

[0014] In one embodiment, a concave groove is provided on one side of the liquid supply main arm facing the spray arm, and the spray arm is at least partially located within the projection range of the concave groove. By providing the concave groove of the liquid supply main arm and allowing the spray arm to be located within the projection range of the concave groove, the height of the spray arm assembly as a whole can be effectively reduced, saving internal space.

[0015] In one embodiment, the spray arm is provided with a connecting through hole, and a portion of the stop assembly extends above the spray arm after passing through the connecting through hole. The spray arm is mounted on the liquid supply main arm, and a groove is provided on the portion of the spray arm mounted on the liquid supply main arm. The connecting through hole allows a portion of the stop assembly to pass through and extend above the spray arm, thereby improving the stability of the overall structure after connection. The spray arm is mounted on the liquid supply main arm, and the design of the groove makes the contact area between the spray arm and the liquid supply main arm smaller during the rotation process, effectively reducing the friction between the two during the relative rotation process.

[0016] In one embodiment, a pulse assembly is further included, wherein the pulse assembly includes a pulse baffle and a locking member, a second liquid spray hole is provided on the liquid supply main arm, the pulse baffle is rotatably arranged on the liquid supply main arm, the pulse baffle is arranged opposite to the second liquid spray hole, the locking member is arranged on the liquid supply main arm, and the pulse baffle is located between the locking member and the liquid supply main arm. The pulse baffle is arranged opposite to the second liquid spray hole on the liquid supply main arm, so that the pulse baffle can diffuse the water flow sprayed from the second liquid spray hole when moving, so that the water flow covers a wider area, and the cleaning efficiency and thoroughness are improved for food residues or stains that are difficult to clean due to the limited spray angle. The locking member is arranged on the liquid supply main arm, and the pulse baffle is located between the locking member and the liquid supply main arm, so that the locking member can limit the position of the pulse baffle, ensuring the stability and accuracy of the pulse spray.

[0017] In one embodiment, a first gap is formed between the spray arm and the liquid supply main arm, a second gap is formed between the spray arm and the limit assembly, the first gap is connected to the second gap, and the first gap is connected to the liquid outlet. The first gap is formed between the spray arm and the liquid supply main arm, and the second gap is formed between the spray arm and the limit assembly. The two gaps are connected to each other, and the first gap is also connected to the liquid outlet, which helps to form a water flow channel in the system, ensuring that the water flow can enter the gap between the spray arm, the liquid supply main arm and the limit assembly to form a water film, effectively reducing the friction during the rotation process.

[0018] In one embodiment, the liquid supply main arm includes a connecting base and a liquid supply shell, the liquid supply shell is arranged on the connecting base, the liquid supply shell can rotate relative to the connecting base, and the limit assembly is arranged on the liquid supply shell. The liquid supply main arm includes a connecting base and a liquid supply shell, wherein the liquid supply shell can rotate relative to the connecting base, and by rotating the liquid supply shell, the spray direction of the water flow can be flexibly changed to improve the coverage and effect of cleaning.

[0019] In one embodiment, the liquid supply housing includes a bottom housing component and an upper housing component, the upper housing component is arranged on the bottom housing component, the upper housing component and the bottom housing component enclose the liquid supply cavity, the upper housing component is provided with the liquid outlet, and the limiter component is arranged on the upper housing component. The liquid supply housing adopts a modular design of the bottom housing component and the upper housing component, making the entire liquid supply system easier to maintain. Users can more easily handle the individual parts of the bottom housing component and the upper housing component, such as cleaning or replacing the parts therein, thereby improving the maintainability of the dishwasher.

[0020] In one embodiment, the bottom shell assembly includes a connecting tube, a bottom shell and a stopper, the connecting tube and the stopper are both arranged on the bottom shell, the stopper is adjacent to the connecting tube, the connecting base is sleeved on the connecting tube and a portion of the connecting base is inserted between the stopper and the connecting tube. By sleeved the connecting base on the connecting tube and partially inserting the connecting base between the stopper and the connecting tube, a relatively stable connecting structure is formed, which helps to improve the overall structural stability of the liquid supply main arm, ensures that it is not easy to shake or fall off during use, thereby ensuring the reliable operation of the dishwasher.

[0021] In one embodiment, the upper shell assembly includes an upper shell body, a limiting ring and a limiting column, the limiting ring is arranged on the upper shell body, the liquid outlet is formed on the inner side of the limiting ring, the limiting assembly is arranged on the limiting ring, the limiting member is arranged on the upper shell body, and also includes a pulse assembly, and the pulse assembly is rotatably arranged on the limiting member. By arranging the limiting ring on the upper shell body, the liquid outlet is formed on the inner side thereof, and the limiting assembly cooperates on the limiting ring, the structure can be strengthened by the limiting ring, damage to the connection is avoided, and the service life of the product is extended. The pulse assembly is arranged on the limiting member, and the limiting member is arranged on the upper shell body, so that the pulse assembly can be rotated, providing a mechanism for generating a pulse effect when the dishwasher is running, which helps to enhance the cleaning force and improve the cleaning efficiency of the dishwasher.

[0022] The second aspect of the present application discloses a dishwasher, comprising: the above-mentioned spray arm assembly; a dishwasher main unit, the dishwasher main unit is provided with a cleaning cavity, and the spray arm assembly is arranged on the dishwasher main unit and located in the cleaning cavity.

[0023] The second aspect of the present application provides a dishwasher, wherein the spray arm assembly is arranged in a cleaning cavity in the dishwasher main body, and can more directly and comprehensively cover the cleaning area, thereby improving the cleaning effect of the dishwasher, ensuring that all areas in the cleaning cavity can be fully cleaned, avoiding dead corners, and improving the cleaning performance of the dishwasher. The combination of the spray arm assembly and the dishwasher main body makes the entire system more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a perspective view of a spray arm assembly;

[0025] Figure 2 is a first exploded view of the spray arm assembly;

[0026] Figure 3 is a second exploded view of the spray arm assembly;

[0027] Figure 4 is a cross-sectional view of a spray arm assembly;

[0028] Figure 5 An exploded view of a cross section of a spray arm assembly;

[0029] Figure 6 is a first stereogram of the limiting base;

[0030] Figure 7 is a second stereoscopic view of the limiting base;

[0031] Figure 8 A three-dimensional diagram of a limit cover;

[0032] Fig. 9 A cross-sectional view of the spray arm.

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

[0034] 1 liquid supply main arm, 11 connecting base, 12 liquid supply shell, 121 bottom shell assembly, 1211 connecting pipe, 1212 bottom shell, 1213 limiting member, 122 upper shell assembly, 1221 upper shell body, 1222 limiting ring, 1223 limiting column, 101 liquid supply cavity, 102 liquid outlet, 103 first limiting groove, 104 concave groove, 105 second liquid spray hole;

[0035] 2 limiting assembly, 21 limiting base, 211 connecting column, 2111 first support ring, 2112 rib, 2113 second support ring, 2114 limiting block, 212 limiting convex rib, 22 limiting cover, 221 cover plate, 222 support column, 223 locking block, 224 convex rib, 201 liquid passage, 202 liquid outlet notch, 203 second limiting groove;

[0036] 3 spray arm, 301 connecting through hole, 302 liquid cavity, 303 first spray hole, 304 groove;

[0037] 4 pulse assembly, 41 pulse baffle, 42 locking piece. DETAILED DESCRIPTION

[0038] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0039] In the following description, many specific details are set forth to facilitate 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 protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0040] The spray arm assembly and the dishwasher according to some embodiments of the present invention will be described below with reference to the accompanying drawings.

[0041] Example 1

[0042] like Figures 1 to 9 As shown, the present embodiment discloses a spray arm assembly, which includes: a liquid supply main arm 1, the liquid supply main arm 1 is provided with a liquid supply cavity 101, and a liquid outlet 102 connected to the liquid supply cavity 101 is opened on the liquid supply main arm 1; a limiting assembly 2, the limiting assembly 2 is arranged on the liquid supply main arm 1 and located at the liquid outlet 102; a spray arm 3, the spray arm 3 is provided with a liquid passage cavity 302, and a first liquid spray hole 303 connected to the liquid passage cavity 302 is opened on the spray arm 3, the spray arm 3 is arranged on the limiting assembly 2 and can rotate relative to the limiting assembly 2, and the limiting assembly 2 is respectively connected to the liquid supply cavity 101 and the liquid passage cavity 302.

[0043] The present application discloses a spray arm assembly, which realizes the control of the liquid supply to the spray arm 3 by providing a liquid supply cavity 101 on the liquid supply main arm 1 and communicating with the liquid outlet 102. The limit assembly 2 is arranged on the liquid supply main arm 1, and the limit assembly 2 is arranged at the liquid outlet 102. The limit assembly 2 is communicated with the liquid supply cavity 101 and the liquid passage cavity 302 respectively, thereby realizing the precise control of the liquid supply and improving the accuracy and stability of the liquid spray. The spray arm 3 is arranged on the limit assembly 2 and can rotate relative to the limit assembly 2. This relative rotation design allows the spray arm 3 to move freely within a certain range, which helps to adapt to different cleaning needs and improves the flexibility and applicability of cleaning. The spray arm 3 is provided with a liquid passage cavity 302, and by communicating with the first liquid spray hole 303, the spray arm 3 can realize a more delicate and uniform liquid spray. The design of the liquid passage cavity 302 helps to optimize the flow of liquid in the spray arm, ensure that better liquid spray performance can be obtained when liquid is discharged from the first liquid spray hole 303, and improve the cleaning effect. The spray arm assembly disclosed in the present invention realizes precise control of liquid supply and liquid spraying, optimizes liquid spraying performance, and simultaneously improves the accuracy and applicability of motion control, thereby improving the performance of the overall cleaning system.

[0044] like Figure 5 and Figure 6 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: one of the limiting assembly 2 and the liquid supply main arm 1 is provided with a limiting convex rib 212, and the other of the limiting assembly 2 and the liquid supply main arm 1 is provided with a first limiting groove 103, and the limiting convex rib 212 is inserted into the first limiting groove 103. By inserting the limiting convex rib 212 into the first limiting groove 103, the spray arm 3 can be accurately limited. By engaging the limiting convex rib 212 with the first limiting groove 103, the accuracy and reliability of the limit are ensured, and unnecessary shaking or position change of the limiting assembly 2 during use is prevented, thereby maintaining the stability of the spray arm 3 during operation, helping to ensure a more consistent cleaning effect of the spray arm 3 and improving the overall performance of the dishwasher.

[0045] In addition to the features of the above-mentioned embodiments, the present embodiment further defines that: the material of the limit component 2 is POM polyformaldehyde resin or PA polyamide, and the material of the liquid supply main arm 1 and the spray arm 3 is PP polypropylene material. POM polyformaldehyde resin, PA polyamide or PP polypropylene are all lightweight materials with good strength, and the hardness of POM polyformaldehyde resin or PA polyamide is higher than that of PP polypropylene. The limit component 2 is made of POM polyformaldehyde resin or PA polyamide, while the liquid supply main arm 1 and the spray arm 3 are made of PP polypropylene. Compared with directly integrally connecting the limit component 2 and the liquid supply main arm 1, the combination of POM or PA materials with better durability can improve the strength of the overall structure of the limit component 2 and the liquid supply main arm 1. At the same time, since the material of the limit component 2 and the spray arm 3 are different, the abnormal noise of the two can be reduced during the rotation process.

[0046] In addition to the features of the above-mentioned embodiments, the present embodiment further defines that: the liquid supply main arm 1 and the limit assembly 2 are formed by secondary injection molding. Through secondary injection molding, the liquid supply main arm 1 and the limit assembly 2 can form a tightly integrated structure, which can ensure that the combination between the two components is more firm, reduce the gap between the components, reduce the possibility of friction and looseness between the parts, and help improve the overall stability and durability of the spray arm assembly. Since the liquid supply main arm 1 and the limit assembly 2 are completed at one time through secondary injection molding, the number of parts and assembly steps required in the assembly process are reduced. This helps to reduce the assembly cost on the dishwasher production line and improve production efficiency. Compared with directly molding the two into one, the use of a higher strength limit assembly 2 and the liquid supply main arm 1 for secondary injection molding can improve the overall structural strength and increase the service life.

[0047] like Figure 5 and Figure 6 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the limiting rib 212 is an annular protrusion, and the first limiting groove 103 is an annular groove. Since the limiting rib 212 is an annular protrusion and the first limiting groove 103 is an annular groove, this design enables the limiting assembly 2 to perform a full 360-degree seal on the liquid supply main arm 1. The annular protrusion provides a larger contact area, and the cooperation with the annular groove enables the limiting assembly 2 to obtain better stability in different positions, which helps to reduce shaking, improve the overall structural stability, and prevent the normal operation of the dishwasher from being affected by unstable movement.

[0048] like Figure 3 and Figure 5As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the limit assembly 2 includes a limit base 21 and a limit cover 22, the limit base 21 is arranged on the liquid supply main arm 1, the limit base 21 is provided with a liquid passage 201, the limit base 21 is provided with a liquid outlet notch 202 connected with the liquid passage 201, the spray arm 3 is sleeved on the limit base 21, the liquid passage cavity 302 of the spray arm 3 is connected with the liquid outlet notch 202, the limit cover 22 is arranged on the limit base 21, and the spray arm 3 is sandwiched between the limit cover 22 and the liquid supply main arm 1. By providing the liquid passage 201 and the liquid outlet notch 202, a smooth passage is provided for the liquid, ensuring that the liquid in the liquid supply main arm 1 can effectively flow to the liquid passage cavity 302 of the spray arm 3, thereby ensuring the normal liquid supply of the spray arm assembly. The spray arm 3 is sleeved on the limiting base 21 and clamped between the spray arm 3 and the liquid supply main arm 1, forming a stable assembly structure, which helps to ensure that the spray arm 3 can be limited to a specified position during use, thereby improving the accuracy of cleaning. Since the limiting cover 22 is set on the limiting base 21, the spray arm 3 is clamped between the limiting cover 22 and the liquid supply main arm 1, and this structural design simplifies the assembly and disassembly process. The user can easily maintain, clean or replace the spray arm 3, which improves the maintainability of the equipment.

[0049] like Figure 6 and Figure 7 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the limiting base 21 includes a connecting column 211 and a limiting rib 212, the hole wall of the liquid outlet 102 of the liquid supply main arm 1 is provided with a first limiting groove 103, the limiting rib 212 is arranged on the connecting column 211, the limiting rib 212 extends into the first limiting groove 103, the connecting column 211 is provided with a liquid passage 201, the connecting column 211 is provided with a liquid outlet notch 202, and the spray arm 3 is sleeved on the connecting column 211. The limiting rib 212 extends into the first limiting groove 103, which ensures a firm connection between the limiting base 21 and the liquid supply main arm 1, prevents swinging or deflection during use, helps to ensure that the liquid can accurately flow out of the liquid outlet 102, and improves the stability and performance of the dishwasher. The connecting column 211 is provided with a liquid passage 201 and a liquid outlet notch 202, which ensures that the liquid can flow unimpeded inside the limiting base 21. This helps to keep the liquid supply channel unobstructed, ensures that the spray arm 3 can be adequately supplied with liquid, and improves the cleaning effect of the dishwasher.

[0050] like Figure 6 and Figure 7As shown, in addition to the features of the above embodiment, this embodiment further defines that: the connecting column 211 includes a first support ring 2111, ribs 2112, a second support ring 2113 and a stop block 2114, the number of ribs 2112 is multiple, the two ends of the multiple ribs 2112 are respectively connected to the first support ring 2111 and the second support ring 2113, the multiple ribs 2112 are arranged at intervals to form a liquid outlet gap 202, the stop block 2114 is arranged on the second support ring 2113, the stop block 2114 is limitedly matched with the stop cover 22, and the stop convex rib 212 is arranged on the first support ring 2111. The multiple ribs 2112 connect the first support ring 2111 and the second support ring 2113 to form a connecting column 211 with a stable structure, ensuring that the connecting column 211 is not easily deformed or loosened during use, thereby enhancing its overall stability. The intervals between the multiple ribs 2112 form liquid outlet gaps 202, through which the liquid can effectively flow from the connecting column 211 to the liquid supply main arm 1, thereby improving the uniformity of the liquid supply and helping to improve the cleaning performance of the dishwasher. The limit block 2114 is arranged on the second support ring 2113 and cooperates with the limit cover 22. This design enables the limit cover 22 to stably limit the range of motion of the spray arm 3 and facilitates the removal of the limit cover 22.

[0051] like Figure 8 As shown, in addition to the features of the above embodiment, this embodiment further defines that: the limit cover 22 includes a cover plate 221, a support column 222, a locking block 223 and a convex rib 224, the support column 222 is arranged on the cover plate 221, the locking block 223 is arranged on the support column 222, the locking block 223 is adapted and installed with the connecting column 211, the convex rib 224 is arranged on the support column 222, the connecting column 211 is provided with a second limit groove 203, the convex rib 224 is adapted with the second limit groove 203, and the convex rib 224 can be inserted into the second limit groove 203 or escaped from the second limit groove 203. Through the adaptive installation of the locking block 223 and the connection column 211, a reliable limit structure is formed, which helps to ensure that the spray arm 3 maintains a stable position during use, and improves the operating reliability of the dishwasher. Through the adaptation of the convex rib 224 and the second limit groove 203, the limit cover 22 can reliably limit the connection column 211.

[0052] like Figure 2 As shown, in addition to the features of the above embodiment, this embodiment further defines that: a concave groove 104 is provided on one side of the liquid supply main arm 1 facing the spray arm 3, and the spray arm 3 is at least partially located within the projection range of the concave groove 104. By providing the concave groove 104 of the liquid supply main arm 1 and allowing the spray arm 3 to be located within the projection range of the concave groove, the height of the entire spray arm assembly can be effectively reduced, saving internal space.

[0053] like Figure 4 and Fig. 9 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the spray arm 3 is provided with a connecting through hole 301, and a portion of the stopper assembly 2 extends above the spray arm 3 after passing through the connecting through hole 301, and the spray arm 3 is mounted on the liquid supply main arm 1, and a groove 304 is provided on the portion of the spray arm 3 mounted on the liquid supply main arm 1. The connecting through hole 301 allows a portion of the stopper assembly 2 to pass through and extend above the spray arm 3, thereby improving the stability of the overall structure after connection. The spray arm 3 is mounted on the liquid supply main arm 1, and the design of the groove 304 makes the spray arm 3 smaller in contact with the liquid supply main arm 1 during the rotation process, effectively reducing the friction between the two during the relative rotation process.

[0054] like Figure 2 and Figure 3 As shown, in addition to the features of the above-mentioned embodiment, this embodiment is further defined as follows: it also includes a pulse assembly 4, the pulse assembly 4 includes a pulse baffle 41 and a locking member 42, a second liquid spray hole 105 is provided on the liquid supply main arm 1, the pulse baffle 41 is rotatably arranged on the liquid supply main arm 1, the pulse baffle 41 and the second liquid spray hole 105 are arranged oppositely, the locking member 42 is arranged on the liquid supply main arm 1, and the pulse baffle 41 is located between the locking member 42 and the liquid supply main arm 1. The pulse baffle 41 and the second liquid spray hole 105 on the liquid supply main arm 1 are arranged oppositely, so that the pulse baffle 41 can diffuse the water flow sprayed from the second liquid spray hole 105 when moving, so that the water flow covers a wider area, and the cleaning efficiency and thoroughness are improved for food residues or stains that are difficult to clean due to the limited spray angle. The locking member 42 is arranged on the liquid supply main arm 1 , and the pulse baffle 41 is located between the locking member 42 and the liquid supply main arm 1 , so that the locking member 42 can limit the position of the pulse baffle 41 , thereby ensuring the stability and accuracy of the pulse injection.

[0055] In addition to the features of the above-mentioned embodiment, the present embodiment further defines that: a first gap is formed between the spray arm 3 and the liquid supply main arm 1, a second gap is formed between the spray arm 3 and the limiting assembly 2, the first gap and the second gap are connected, and the first gap is connected to the liquid outlet 102. The first gap is formed between the spray arm 3 and the liquid supply main arm 1, and the second gap is formed between the spray arm 3 and the limiting assembly 2. The two gaps are connected to each other, and the first gap is also connected to the liquid outlet 102, which helps to form a water flow channel in the system, ensuring that the water flow can enter the gap between the spray arm 3, the liquid supply main arm 1 and the limiting assembly 2 to form a water film, effectively reducing the friction during the rotation process.

[0056] like Figure 2 and Figure 3As shown, in addition to the features of the above embodiments, this embodiment further defines that: the liquid supply main arm 1 includes a connecting base 11 and a liquid supply housing 12, the liquid supply housing 12 is arranged on the connecting base 11, the liquid supply housing 12 can rotate relative to the connecting base 11, and the limit assembly 2 is arranged on the liquid supply housing 12. The liquid supply main arm 1 includes a connecting base 11 and a liquid supply housing 12, wherein the liquid supply housing 12 can rotate relative to the connecting base 11, and by rotating the liquid supply housing 12, the spray direction of the water flow can be flexibly changed to improve the coverage and effect of cleaning.

[0057] like Figure 2 and Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the liquid supply housing 12 includes a bottom housing assembly 121 and an upper housing assembly 122, the upper housing assembly 122 is arranged on the bottom housing assembly 121, the upper housing assembly 122 and the bottom housing assembly 121 are enclosed to form a liquid supply cavity 101, a liquid outlet 102 is provided on the upper housing assembly 122, and the limit assembly 2 is arranged on the upper housing assembly 122. The liquid supply housing 12 adopts a modular design of the bottom housing assembly 121 and the upper housing assembly 122, so that the entire liquid supply system is easier to maintain. Users can more easily handle the individual parts of the bottom housing assembly 121 and the upper housing assembly 122, such as cleaning or replacing the parts therein, thereby improving the maintainability of the dishwasher.

[0058] like Figure 2 and Figure 3 As shown, in addition to the features of the above-mentioned embodiments, this embodiment further defines that: the bottom shell assembly 121 includes a connecting pipe 1211, a bottom shell 1212 and a stopper 1213, the connecting pipe 1211 and the stopper 1213 are both arranged on the bottom shell 1212, the stopper 1213 is adjacent to the connecting pipe 1211, the connecting base 11 is sleeved on the connecting pipe 1211, and a portion of the connecting base 11 is inserted between the stopper 1213 and the connecting pipe 1211. By sleeved the connecting base 11 on the connecting pipe 1211 and partially inserting the stopper 1213 and the connecting pipe 1211, a relatively stable connecting structure is formed, which helps to improve the overall structural stability of the liquid supply main arm 1, ensures that it is not easy to shake or fall off during use, thereby ensuring the reliable operation of the dishwasher.

[0059] like Figure 2 and Figure 3As shown, in addition to the features of the above embodiments, this embodiment further defines that: the upper shell assembly 122 includes an upper shell body 1221, a limiting ring 1222 and a limiting column 1223, the limiting ring 1222 is arranged on the upper shell body 1221, the inner side of the limiting ring 1222 forms a liquid outlet 102, the limiting assembly 2 is arranged on the limiting ring 1222, the limiting member 1213 is arranged on the upper shell body 1221, and also includes a pulse assembly 4, which is rotatably arranged on the limiting member 1213. By arranging the limiting ring 1222 on the upper shell body 1221, the inner side of which forms the liquid outlet 102, and the limiting assembly 2 cooperates on the limiting ring 1222, the limiting ring 1222 can be used to strengthen the structure, avoid damage to the connection, and extend the service life of the product. The pulse assembly 4 is arranged on the limiter 1213, and the limiter 1213 is arranged on the upper shell body 1221, so that the pulse assembly 4 can rotate, providing a mechanism for generating a pulse effect when the dishwasher is running, which helps to enhance the cleaning force and improve the cleaning efficiency of the dishwasher.

[0060] Example 2

[0061] This embodiment discloses a dishwasher, comprising: the above-mentioned spray arm assembly; a dishwasher main body, the dishwasher main body is provided with a cleaning cavity, and the spray arm assembly is arranged on the dishwasher main body and located in the cleaning cavity.

[0062] The second aspect of the present application provides a dishwasher, in which a spray arm assembly is arranged in a cleaning cavity in the main body of the dishwasher, and can cover the cleaning area more directly and comprehensively, thereby improving the cleaning effect of the dishwasher, ensuring that all areas in the cleaning cavity can be fully cleaned, avoiding dead corners, and improving the cleaning performance of the dishwasher. The combination of the spray arm assembly and the main body of the dishwasher makes the entire system more compact. The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0063] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A spray arm assembly, characterized in that: The spray arm assembly comprises: A liquid supply main arm (1), wherein the liquid supply main arm (1) is provided with a liquid supply cavity (101), and the liquid supply main arm (1) is provided with a liquid outlet (102) which is in communication with the liquid supply cavity (101); A limit assembly (2), the limit assembly (2) being arranged on the liquid supply main arm (1) and located at the liquid outlet (102); A spray arm (3), wherein the spray arm (3) is provided with a liquid passage chamber (302), and a first liquid spray hole (303) is opened on the spray arm (3) and is connected to the liquid passage chamber (302). The spray arm (3) is arranged on the limit assembly (2) and can rotate relative to the limit assembly (2), and the limit assembly (2) is respectively connected to the liquid supply chamber (101) and the liquid passage chamber (302).

2. The spray arm assembly according to claim 1, characterized in that: One of the limiting assembly (2) and the liquid supply main arm (1) is provided with a limiting convex rib (212), and the other of the limiting assembly (2) and the liquid supply main arm (1) is provided with a first limiting groove (103), and the limiting convex rib (212) is inserted into the first limiting groove (103).

3. The spray arm assembly according to claim 1, characterized in that: The limiting component (2) is made of POM polyoxymethylene resin or PA polyamide, the liquid supply main arm (1) is made of PP polypropylene, and the liquid supply main arm (1) and the limiting component (2) are formed by secondary injection molding.

4. The spray arm assembly according to claim 1, characterized in that: The limiting assembly (2) comprises a limiting base (21) and a limiting cover (22); the limiting base (21) is arranged on the liquid supply main arm (1); the limiting base (21) is provided with a liquid passage (201); the limiting base (21) is provided with a liquid outlet notch (202) connected to the liquid passage (201); the spray arm (3) is sleeved on the limiting base (21); the liquid passage cavity (302) of the spray arm (3) is connected to the liquid outlet notch (202); the limiting cover (22) is arranged on the limiting base (21); and the spray arm (3) is clamped between the limiting cover (22) and the liquid supply main arm (1).

5. The spray arm assembly according to claim 4, characterized in that: The limiting base (21) comprises a connecting column (211) and a limiting convex rib (212); the hole wall of the liquid outlet (102) of the liquid supply main arm (1) is provided with a first limiting groove (103); the limiting convex rib (212) is arranged on the connecting column (211); the limiting convex rib (212) extends into the first limiting groove (103); the connecting column (211) is provided with the liquid passage (201); the connecting column (211) is provided with the liquid outlet notch (202); and the spray arm (3) is sleeved on the connecting column (211).

6. The spray arm assembly according to claim 5, characterized in that: The connecting column (211) comprises a first supporting ring (2111), a rib (2112), a second supporting ring (2113) and a limiting block (2114); the number of the ribs (2112) is multiple, and the two ends of the multiple ribs (2112) are respectively connected to the first supporting ring (2111) and the second supporting ring (2113); the multiple ribs (2112) are arranged at intervals to form the liquid outlet gap (202); the limiting block (2114) is arranged on the second supporting ring (2113); the limiting block (2114) is limitedly matched with the limiting cover (22); and the limiting convex rib (212) is arranged on the first supporting ring (2111); And / or the limiting cover (22) comprises a cover plate (221), a support column (222), a locking block (223) and a convex rib (224); the support column (222) is arranged on the cover plate (221); the locking block (223) is arranged on the support column (222); the locking block (223) is adapted to be installed with the connecting column (211); the convex rib (224) is arranged on the support column (222); a second limiting groove (203) is provided on the connecting column (211); the convex rib (224) is adapted to be installed with the second limiting groove (203); the convex rib (224) can be inserted into the second limiting groove (203) or be removed from the second limiting groove (203).

7. The spray arm assembly according to claim 1, characterized in that: A concave groove (104) is provided on one side of the liquid supply main arm (1) facing the spray arm (3), and the spray arm (3) is located within the projection range of the concave groove (104); And / or the spray arm (3) is provided with a connecting through hole (301), part of the limit assembly (2) passes through the connecting through hole (301) and extends above the spray arm (3), the spray arm (3) is mounted on the liquid supply main arm (1), and the part of the spray arm (3) mounted on the liquid supply main arm (1) is provided with a groove (304).

8. The spray arm assembly according to claim 1, characterized in that: A first gap is formed between the spray arm (3) and the liquid supply main arm (1), a second gap is formed between the spray arm (3) and the limit assembly (2), the first gap and the second gap are connected, and the first gap is connected to the liquid outlet (102).

9. The spray arm assembly according to claim 1, characterized in that: The invention also comprises a pulse assembly (4), wherein the pulse assembly (4) comprises a pulse baffle (41) and a locking member (42); a second liquid spray hole (105) is provided on the liquid supply main arm (1); the pulse baffle (41) is rotatably arranged on the liquid supply main arm (1); the pulse baffle (41) and the second liquid spray hole (105) are arranged opposite to each other; the locking member (42) is arranged on the liquid supply main arm (1); and the pulse baffle (41) is located between the locking member (42) and the liquid supply main arm (1).

10. A dishwasher, characterized in that: The dishwasher include: The spray arm assembly according to any one of claims 1 to 9; A dishwasher main unit is provided with a cleaning cavity, and the spray arm assembly is arranged on the dishwasher main unit and located in the cleaning cavity.

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