Lower spraying arm assembly and dish washing machine

Abstract

The utility model discloses a lower spraying arm assembly and a dish-washing machine, the dish-washing machine comprises an inner container and a heating pipe arranged on a bottom shell of the inner container, and the lower spraying arm assembly comprises a lower spraying arm and a heat insulation part; the lower spraying arm is used for being arranged above the heating pipe, and the lower spraying arm is a plastic part; the heat insulation part is connected with the lower spraying arm, covers part of the lower surface of the lower spraying arm and is used for being arranged opposite to the heating pipe in the vertical direction of the dish washing machine. According to the technical scheme, the heat insulation part is arranged and covers part of the lower surface of the lower spraying arm, and the heat insulation effect of the lower spraying arm can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and in particular to a lower spray arm assembly and a dishwasher. Background Art

[0002] With the continuous progress of society, people's demand for intelligent kitchen appliances is getting higher and higher. Dishwashers are very popular because of their good cleaning effect, multiple disinfection functions, and time-saving and labor-saving advantages. Dishwashers can reduce people's labor burden in modern life.

[0003] A dishwasher usually includes a spray arm and a heating tube. The spray arm sprays out washing water for cleaning dishes. The heating tube can quickly heat the washing water to a certain temperature to facilitate cleaning and disinfecting dishes. The heating tube can also help dry the dishes, reducing water stains and bacterial growth.

[0004] In related technologies, dishwashers use exposed heating tubes to achieve better heating and drying effects. However, the lower spray arm in the spray arm is usually arranged close to the heating tube at the bottom of the dishwasher. This makes the lower spray arm prone to deformation and aging due to long-term high-temperature baking. Utility Model Content

[0005] An embodiment of the present application provides a lower spray arm assembly and a dishwasher. By providing a heat insulating member and covering part of the lower surface of the lower spray arm, the problem of deformation and aging of the lower spray arm caused by high temperature baking during long-term use can be effectively improved.

[0006] In a first aspect, an embodiment of the present application provides a lower spray arm assembly, which includes a lower spray arm and a heat insulation member; the lower spray arm is used to be arranged above the heating tube, and the lower spray arm is a plastic member; the heat insulation member is connected to the lower spray arm, covering part of the lower surface of the lower spray arm, and is used to be arranged opposite to the heating tube along the up and down direction of the dishwasher.

[0007] In some embodiments, the heating tube is an annular heating tube, and the lower spray arm includes two water spray sections divided along its own rotation axis; two thermal insulation members are provided, and the two thermal insulation members are respectively provided on the two water spray sections, and are respectively used to cover two areas of the annular heating tube that are relatively arranged in the same radial direction.

[0008] In some embodiments, the lower spray arm further includes: an upper shell, provided with a water spray hole; and a lower shell, connected to the upper shell to form a water spray chamber connected to the upper shell and connected to the water spray hole; wherein the heat insulation member is connected to the lower shell and covers part of the lower surface of the lower spray arm.

[0009] In some embodiments, the thermal insulation member includes: an insulation portion, which covers a portion of the lower surface of the lower spray arm and is used to be arranged opposite to the heating pipe along the up and down directions of the dishwasher; two connecting portions, which are connected to opposite sides of the insulation portion in the width direction of the lower spray arm and extend upward from the opposite sides of the insulation portion, and the connecting portions are connected to the lower shell.

[0010] In some embodiments, the lower shell includes: a bottom plate, arranged opposite to the upper shell; and a surrounding plate, arranged around the bottom plate, the surrounding plate including two long side walls that are opposite and spaced apart along the width direction of the lower spray arm; wherein the heat insulation portion is attached to the lower surface of the bottom plate, and the two connecting portions are respectively connected to the two long side walls.

[0011] In some embodiments, the connecting portion is snap-fitted, screw-fitted, welded, or interference-fitted with the long side wall.

[0012] In some embodiments, each of the connecting parts includes: a flange connected to the insulation part at an angle; and a buckle connected to the side of the flange away from the insulation part; wherein the long side wall has a buckle groove for engaging with the buckle.

[0013] In some embodiments, the clip includes: a bending section, connected to the side of the flange away from the insulation part and bent relative to the insulation part to fit into the clip groove; and a limiting section, connected to the side of the bending section away from the flange, and along the length direction of the lower spray arm, the first dimension of the limiting section is larger than the second dimension of the clip groove, so that the limiting section cannot detach from the long side wall through the clip groove.

[0014] In some embodiments, a content receiving groove is provided on the inner surface of the long side wall, and the limiting section is provided in the content receiving groove.

[0015] In some embodiments, the lower shell is further provided with an external accommodating groove, which extends from the outer surface of one of the long side walls through the bottom plate to the outer surface of the other long side wall; the heat insulation part and the two flanges are at least partially accommodated in the external accommodating groove.

[0016] In some embodiments, in the depth direction of the outer accommodating groove, the heat insulating portion and the flange do not exceed the groove opening of the outer accommodating groove.

[0017] In some embodiments, each flange is provided with a plurality of the buckles arranged at intervals, and the plurality of the buckles are correspondingly snapped into the plurality of the buckle grooves.

[0018] In some embodiments, the heat insulating portion and the connecting portion are integral components.

[0019] In a second aspect, an embodiment of the present application provides a dishwasher, which includes a shell, an inner tank, a heating pipe and a lower spray arm assembly as described above; the inner tank is arranged in the shell; the heating pipe is arranged on the bottom shell of the inner tank; and the heat insulation component is arranged opposite to the heating pipe along the up and down direction of the dishwasher.

[0020] The lower spray arm assembly according to the embodiment of the present application includes a lower spray arm and a heat insulator. The lower spray arm is made of plastic. Compared with metal parts, its cost is lower, which helps reduce the production cost of the dishwasher. At the same time, it provides greater flexibility in the design and manufacturing process of the lower spray arm, allowing for a more diverse range of shapes and structures to suit different washing needs. The plastic part is also lighter and thinner, which can reduce the weight of the entire dishwasher and facilitate installation and movement. At the same time, as a plastic part, the lower spray arm generally generates less noise during operation than metal parts, which helps reduce the noise level of the dishwasher during the washing process, thereby providing users with a more comfortable user experience.

[0021] The heat insulation member is connected to the lower spray arm, covering part of the lower surface of the lower spray arm, and is used to be arranged opposite to the heating pipe in the up and down directions of the dishwasher. In this way, heat radiation can be reduced at the position where the lower spray arm and the heating pipe are relative to each other, thereby enhancing the heat insulation effect of the lower spray arm. The heat insulation member is arranged on part of the lower surface of the lower spray arm. Compared with completely covering the lower surface of the lower spray arm, it not only ensures the heat insulation of the lower spray arm, avoids the lower spray arm from being damaged by heat and melting, ensures the reliability and durability of the lower spray arm, but also reduces the production cost and maintenance cost of the lower spray arm assembly, thereby reducing the production cost of the dishwasher. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the structure of the dishwasher in this application;

[0024] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the lower spray arm assembly shown in FIG;

[0025] Figure 3 for Figure 2 Schematic diagram of the structure of the connection between the lower shell and the thermal insulation member in the lower spray arm assembly shown in;

[0026] Figure 4 for Figure 2 Schematic diagram of the lower shell structure of the lower spray arm shown in FIG;

[0027] Figure 5 for Figure 2 A schematic structural diagram of the thermal insulation component is shown in FIG.

[0028] Description of Figure Numbers:

[0029] 100. Lower spray arm assembly; 10. Lower spray arm; 11. Water spray section; 12. Upper shell; 121. Water spray hole; 13. Lower shell; 131. Bottom plate; 132. Enclosure; 1321. Long side wall; 1322. Buckle groove; 1323. Internal storage groove; 133. External storage groove; 14. Water spray chamber; 15. Water inlet; 20. Thermal insulation component; 21. Thermal insulation part; 22. Connecting part; 221. Flanged edge; 222. Buckle; 2221. Bending section; 2222. Limiting section; 200. Shell; 300. Inner tank; 400. Heating tube; 1000. Dishwasher.

[0030] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of this application clearer, the following part will further describe the embodiments of this application in detail with reference to the accompanying drawings.

[0032] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application, as detailed in the appended claims.

[0033] In the description of this application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0035] With the continuous progress of society, people's demand for intelligent kitchen appliances is getting higher and higher. Dishwashers are very popular because of their good cleaning effect, multiple disinfection functions, and time-saving and labor-saving advantages. Dishwashers can reduce people's labor burden in modern life.

[0036] A dishwasher usually includes a spray arm and a heating tube. The spray arm is used to spray washing water for cleaning dishes. The heating tube can quickly heat the washing water to a certain temperature. The heated water can dissolve detergent faster, improve the washing effect, and make it easier to clean and disinfect dishes. The heating tube can also help dry the dishes, reduce water stains and bacterial growth.

[0037] To achieve better heating and drying results, dishwashers employ exposed heating tubes. However, the lower spray arm is typically positioned close to the heating tubes at the bottom of the dishwasher, making it susceptible to deformation and aging due to prolonged high-temperature drying. Furthermore, the lower spray arm is typically made of metal to prevent damage from high-temperature radiation from the heating tubes. This increases cost and overall weight, and also limits the design options for the lower spray arm.

[0038] To resolve the above issues, please refer to Figures 1 to 3 This application proposes a lower spray arm assembly 100 for use in a dishwasher 1000. The dishwasher 1000 includes an inner container 300 and a heating pipe 400 disposed on the bottom shell of the inner container 300. The heating pipe 400 is an annular heating pipe, but may also be a strip heating pipe or a heating pipe of other shapes. In an embodiment of the present application, the lower spray arm assembly 100 includes a lower spray arm 10 and a heat insulating member 20.

[0039] The lower spray arm 10 is made of plastic, which is more cost-effective than metal, helping to reduce the production cost of the dishwasher 1000. It also provides greater flexibility in the design and manufacturing of the lower spray arm 100, allowing for a wider variety of shapes and structures to suit different washing needs. Furthermore, the plastic component is thinner and lighter, reducing the weight of the entire dishwasher 1000 and facilitating installation and movement. Furthermore, as a plastic component, the lower spray arm 100 generally produces less noise during operation than metal components, which helps reduce the noise level of the dishwasher 1000 during the wash cycle, thereby providing a more comfortable user experience.

[0040] However, the lower spray arm 10 is a plastic part, and its heat resistance is lower than that of metal parts. When the lower spray arm 10 is arranged above the heating pipe 400, it is easy to deform, age, or even be damaged due to the long-term high-temperature baking of the heating pipe 400 below. The technical solution of the present application is provided with a heat insulating member 20, which is connected to the lower spray arm 10, covers a portion of the lower surface of the lower spray arm 10, and is used to be arranged relative to the heating pipe 400 along the upper and lower directions of the dishwasher 1000. In this way, heat radiation can be reduced at the position where the lower spray arm 10 and the heating pipe 400 are relative, thereby enhancing the heat insulation effect of the lower spray arm 10. Moreover, the heat insulating member 20 is arranged on a portion of the lower surface of the lower spray arm 10, which, compared with completely covering the lower surface of the lower spray arm 10, not only ensures the heat insulation of the lower spray arm 10, prevents the lower spray arm 10 from being damaged by heat and melting, ensures the reliability and durability of the lower spray arm 10, but also can reduce the production cost and maintenance cost of the lower spray arm assembly 100, thereby reducing the production cost of the dishwasher 1000.

[0041] It should be noted that since the heating tube 400 is arranged below the lower spray arm 10, when the heating tube 400 generates heat, a heat radiation area will be formed on part of the lower surface of the lower spray arm 10, and since the heat is radially dissipated from the heating tube 400, the amount of heat received by each point on the lower surface of the lower spray arm 10 is also different. Therefore, the coverage area of ​​the thermal insulation member 20 on the lower surface of the lower spray arm 10 should be at least larger than the heat radiation area on the lower surface of the lower spray arm 10, that is, it can be equivalent to the heat radiation area, or it can be larger than the heat radiation area, or the thermal insulation member 20 completely covers the entire lower surface of the lower spray arm 10, to ensure that the thermal insulation member 20 can cover the heat radiation area on the lower surface of the lower spray arm 10 opposite to the heating tube 400.

[0042] Furthermore, the material of the thermal insulation member 20 may include but is not limited to metal, ceramic and other materials with good thermal insulation and heat resistance. In the embodiment of the present application, the thermal insulation member 20 is a metal member, which has a high melting point, good heat resistance and high thermal conductivity, and therefore has a better thermal insulation effect. It can more effectively distribute heat evenly and reduce local overheating, thereby better protecting the lower surface of the lower spray arm 10 opposite to the heating tube 400, avoiding heat damage, and improving the service life and reliability of the lower spray arm 10.

[0043] In some embodiments, the lower spray arm assembly 100 also includes a spray arm seat (not shown in the figure), which is connected to the bottom shell of the inner pot 300. The lower spray arm 10 is rotatably connected to the spray arm seat through a rotating shaft, so that the lower spray arm 10 can rotate relative to the bottom shell of the inner pot 300. The lower spray arm 10 includes two water spray sections 11 divided along its own rotating axis. With this arrangement, when the lower spray arm 10 rotates, the water spray section 11 can spray water from different angles, increase the cleaning coverage, ensure that all parts of the tableware can be rinsed by the water, and improve the cleaning effect.

[0044] Two thermal insulation members 20 are provided. In the embodiment of the present application, since the heating tube 400 is an annular heating tube 400, the projections of the two water spray sections 11 in the upper and lower directions of the dishwasher 1000 will partially overlap with the projections of the heating tube 400 in the upper and lower directions of the dishwasher 1000. The two thermal insulation members 20 are respectively provided on the two water spray sections 11, and are respectively used to cover the two areas of the annular heating tube 400 that are arranged opposite to each other in the same radial direction, further ensuring that the thermal insulation member 20 can cover the area of ​​the lower surface of the lower spray arm 10 that is opposite to the heating tube 400 along the upper and lower directions of the dishwasher 1000, thereby enhancing the thermal insulation effect of the lower spray arm 10.

[0045] In some embodiments, the lower spray arm 10 also includes an upper shell 12 and a lower shell 13. The upper shell 12 is provided with a water spray hole 121. The lower shell 13 is connected to the upper shell 12 to form a water spray chamber 14 connected to the water spray hole 121 with the upper shell 12. A water inlet 15 is also provided on the lower shell 13. The water inlet 15 can be connected to a water pump through a water supply pipe. The water flow can enter the water spray chamber 14 from the water inlet 15 and be sprayed out from the water spray hole 121 to realize water spray washing from bottom to top, and clean the tableware placed in the inner tank 300.

[0046] Specifically, a plurality of water spray holes 121 may be arranged at intervals in the length direction of the upper shell 12, and the plurality of water spray holes 121 may be of different sizes and shapes. For example, the shapes of the plurality of water spray holes 121 may be circular, triangular, diamond-shaped, etc., and the spacing between two adjacent water spray holes 121 may be the same, or of course may be different. This application does not impose any restrictions on this. The design of the plurality of water spray holes 121 increases the coverage area of ​​cleaning and reduces cleaning dead corners to achieve a more uniform and comprehensive water spray cleaning effect. At the same time, the spraying direction and strength of the plurality of water spray holes 121 may be adjusted according to the different tableware layouts and shapes in the inner tank 300 to adapt to different cleaning needs.

[0047] The upper shell 12 and the lower shell 13 can be an integrally formed structure. Of course, the upper shell 12 and the lower shell 13 can also be of a split design, and the two can be fixedly connected or detachably connected. The thermal insulation member 20 is connected to the lower shell 13 and covers a portion of the lower surface of the lower spray arm 10. During the manufacturing process, the position of the thermal insulation member 20 on the lower shell 13 can be determined in advance to ensure that the thermal insulation member 20 can completely cover the area of ​​the lower surface of the lower spray arm 10 opposite the heating tube 400, thereby ensuring the thermal insulation effect.

[0048] In some embodiments, the thermal insulation member 20 includes an insulating portion 21 and two connecting portions 22. The insulating portion 21 covers a portion of the lower surface of the lower spray arm 10 and is disposed opposite the heating pipe 400 along the vertical direction of the dishwasher 1000, thereby insulating the area of ​​the lower surface of the lower spray arm 10 opposite the heating pipe 400. The two connecting portions 22 are connected to opposite sides of the insulating portion 21 in the width direction of the lower spray arm 10 and extend upward from the opposite sides of the insulating portion 21. The connecting portions 22 are connected to the lower shell 13, ensuring the stability of the connection of the insulating portion 20 to the lower spray arm 10 and preventing the insulating portion 20 from separating from the lower spray arm 10 during operation, thereby affecting the thermal insulation effect.

[0049] The heat insulating portion 21 and the connecting portion 22 can be an integral component to reduce the number of connection points on the heat insulating member 20, thereby reducing the structural risk caused by unstable connection, ensuring the heat insulation effect, and simplifying the production process and reducing the complexity of assembly. In addition, the heat insulating portion and the connecting portion 22 are an integral component, which can also provide a smoother and more seamless appearance design, enhance the user's aesthetic experience, and reduce dead angles during cleaning, thereby improving ease of use. Of course, the heat insulating portion 21 and the connecting portion 22 can also be a split setting, and the connection between the two can include but is not limited to snap-on connection, screw connection, etc., and this application does not impose any restrictions on this.

[0050] In some embodiments, please refer to 1. Figure 2 and Figure 4 The lower shell 13 includes a bottom plate 131 and a surrounding plate 132. The bottom plate 131 is arranged opposite the upper shell 12, and the surrounding plate 132 is arranged around the bottom plate 131. The surrounding plate 132 includes two long side walls 1321 arranged opposite and spaced apart along the width direction of the lower spray arm 10. The heat insulation portion 21 is attached to the lower surface of the bottom plate 131 to ensure that it can cover the area on the lower surface of the lower spray arm 10 opposite the heating tube 400. The two connecting portions 22 are respectively connected to the two long side walls 1321 to ensure the stability of the connection of the heat insulation member 20 to the lower spray arm 10, thereby ensuring the thermal insulation effect.

[0051] The connecting portion 22 is snap-fitted, screwed, welded or interference-fitted with the long side wall 1321. For example, screw holes are correspondingly provided on the connecting portion 22 and the long side wall 1321, and the connecting parts are connected to the screw holes to fix the connecting portion 22 and the long side wall 1321; or, the spacing between the two connecting portions 22 is smaller than the spacing between the two long side walls 1321, so that the two connecting portions 22 can be interference-fitted with the two long side walls 1321, so that the two connecting portions 22 are stably connected to the long side wall 1321. The present application does not limit the connection form between the connecting portion 22 and the long side wall 1321.

[0052] In the embodiment of the present application, the connecting portion 22 is snap-fitted to the long side wall 1321, and each connecting portion 22 includes a flange 221 and a buckle 222. The flange 221 is connected to the insulation portion 21 at an angle, and the buckle 222 is connected to the side of the flange 221 away from the insulation portion 21, wherein the long side wall 1321 has a buckle groove 1322 snap-fitted to the buckle 222. During the installation process, the buckle 222 on the flange 221 can be snapped into the buckle groove 1322 of the long side wall 1321 from top to bottom. While the two are snap-fitted, the insulation portion 21 can also better cover the area where the bottom plate 131 and the heating tube 400 are relatively arranged, thereby ensuring the connection stability of the insulation component 20 while also ensuring the insulation effect of the insulation component 20.

[0053] In some embodiments, as Figure 1 and Figure 4 As shown, the lower shell 13 is further provided with an outer accommodating groove 133. The outer accommodating groove 133 extends from the outer surface of one long side wall 1321 through the bottom plate 131 to the outer surface of the other long side wall 1321. The heat insulating portion 21 and the two flanges 221 are at least partially accommodated within the outer accommodating groove 133. The groove wall of the outer accommodating groove 133 covers the area of ​​the lower surface of the lower spray arm 10 opposite the heating tube 400. This ensures that the heat insulating portion 21 of the heat insulating member 20 can cover the area of ​​the lower surface of the lower spray arm 10 opposite the heating tube 400, and prevents misalignment of the heat insulating member 20 during installation, thereby better ensuring the heat insulating effect of the heat insulating member 20.

[0054] In the process of installing the thermal insulation component 20 on the lower shell 13 of the lower spray arm 10, the thermal insulation part 21 can be first embedded in the outer accommodating groove 133 to realize the pre-installation of the thermal insulation component 20 on the lower shell 13 of the lower spray arm 10, and then the buckle 222 on the flange 221 is inserted into the buckle groove 1322 of the long side wall 1321. The thermal insulation component 20 can be limitedly connected with the lower shell 13 of the lower spray arm 10 in the up and down directions and the lateral directions of the lower spray arm assembly 100, thereby improving the connection stability of the thermal insulation component 20 on the lower shell 13, and can also simplify the installation steps, thereby reducing the production cost.

[0055] In the depth direction of the outer accommodating groove 133, the heat insulation part 21 and the flange 221 do not exceed the notch of the outer accommodating groove 133, so that the heat insulation part 21 and the flange 221 can form an integral structure with the outer surface of the lower shell 13, reducing the abruptness and making the appearance more neat and beautiful. The heat insulation part 21 and the flange 221 are accommodated in the notch of the outer accommodating groove 133, which can also reduce the risk of the heat insulation part 20 scratching the hands during installation and cleaning and maintenance, and can also reduce the space occupied by the heat insulation part 20 under the lower spray arm 10, thereby improving space utilization.

[0056] It should be noted that the lower shell 13 may not be provided with the external accommodating groove 133, but the heat insulating part 21 may be directly attached to the lower surface of the lower shell 13. At this time, in order to ensure that the heat insulating part 21 and the flange 221 do not scratch the hands, the heat insulating part 21 and the flange 221 may be deburred during the production process to ensure the smoothness of the heat insulating part 21 and the flange 221, as well as the structural integrity with the lower shell 13.

[0057] It can be understood that each flange 221 can be provided with multiple spaced apart clips 222, and the multiple clips 222 are snapped into the multiple clip grooves 1322 one by one. The structural form of the multiple clips 222 and the multiple clip grooves 1322 can provide a more uniform force distribution, reduce the stress on a single connection point, disperse stress concentration, avoid material fatigue or fracture caused by stress concentration, and provide a greater locking force, thereby enhancing the overall structural stability of the connection between the thermal insulation component 20 and the lower shell 13.

[0058] Specifically, such as Figure 4 and Figure 5 As shown, four clips 222 may be provided on the flange 221, wherein two clips 222 are spaced apart on one flange 221, and the other two clips 222 are oppositely and spaced apart on the other flange 221, and four clip grooves 1322 are also provided, and four clips 222 are provided relatively on the two long side walls 1321, so that the flange 221 and the long side wall 1321 can be relatively fixedly connected on both sides of the lower shell 13, thereby improving the connection strength and stability.

[0059] In some embodiments, the buckle 222 includes a bent section 2221 and a limiting section 2222. The bent section 2221 is connected to the side of the flange 221 away from the heat insulation portion 21 and is bent relative to the heat insulation portion 21 to snap into the buckle slot 1322. The bent section 2221 allows the buckle 222 to undergo a certain degree of elastic deformation during assembly to adapt to the position and shape of the buckle slot 1322, so that the buckle 222 can be connected to the buckle slot 1322 without the use of other fasteners, facilitating quick assembly and disassembly. The limiting section 2222 is connected to the side of the bent section 2221 away from the flange 221 to ensure that the buckle 222 is properly engaged with the buckle slot 1322. The relative displacement between the bent section 2221 and the wall of the buckle slot 1322 is limited, thereby stably maintaining its position, thereby improving the connection strength and stability, thereby ensuring that the heat insulation component 20 can be stably connected to the lower shell 13 of the lower spray arm 10 and ensuring the heat insulation effect.

[0060] Specifically, along the length of the lower spray arm 10, the first dimension of the limiting section 2222 is greater than the second dimension of the latching groove 1322. This prevents the limiting section 2222 from detaching from the long sidewall 1321 through the latching groove 1322, thereby improving the tightness of the connection and ensuring a stable connection between the buckle 222 and the latching groove 1322, thereby ensuring a good thermal insulation effect. The limiting section 2222 also blocks the latching groove 1322, preventing water in the spray chamber 14 from leaking out of the latching groove 1322 and causing insufficient water spray. It also prevents dirt from entering the spray chamber 14 through the latching groove 1322 and contaminating the wash water.

[0061] Furthermore, a content slot 1323 is provided on the inner surface of the long sidewall 1321, and the limiting section 2222 is disposed within the content slot 1323. This further limits the displacement of the bent section 2221 within the locking slot 1322, preventing the thermal insulation 20 from being displaced or dislodged due to external forces or the rotation of the lower spray arm 10. Furthermore, the provision of the content slot 1323 on the inner surface of the long sidewall 1321 further reduces the thickness of the spray chamber 14, thereby increasing its water storage capacity and reducing resistance to water flow within the spray chamber 14, thereby enhancing the spraying effect.

[0062] Please refer again Figure 1 The present application also proposes a dishwasher 1000, which includes a shell 200, an inner tank 300, a heating pipe 400 and a lower spray arm assembly 100. The specific structure of the lower spray arm assembly 100 refers to the above embodiment. Since the dishwasher 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0063] The dishwasher 1000 may also include an upper spray arm assembly (not shown in the figure), which is arranged on the upper shell 12 of the inner tank 300 and is arranged opposite to the lower spray arm assembly 100 in the upper and lower directions of the inner tank 300, thereby realizing an upper and lower interactive water flow design, forming a water flow network covering the entire dishwashing space in the inner tank 300, avoiding the existence of cleaning dead corners, and greatly improving the cleaning effect.

[0064] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0065] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A lower spray arm assembly, used in a dishwasher, comprising an inner container and a heating pipe arranged on a bottom shell of the inner container, characterized in that: The lower spray arm assembly comprises: A lower spray arm is used to be arranged above the heating tube, and the lower spray arm is a plastic part; The heat insulating member is connected to the lower spray arm, covers a portion of the lower surface of the lower spray arm, and is used to be arranged opposite to the heating pipe along the up and down direction of the dishwasher.

2. The lower spray arm assembly according to claim 1, wherein: The heating pipe is an annular heating pipe, and the lower spray arm includes two water spray sections divided along its own rotation axis; There are two heat insulating members, which are respectively arranged on the two water spraying sections and are used to cover two areas of the annular heating pipe that are arranged opposite to each other in the same radial direction.

3. The lower spray arm assembly according to claim 1, wherein: The lower spray arm also includes: The upper shell is provided with a water spray hole; and a lower shell connected to the upper shell to form a water spray cavity connected to the water spray hole; Wherein, the heat insulation component is connected to the lower shell and covers a portion of the lower surface of the lower spray arm.

4. The lower spray arm assembly according to claim 3, wherein: The thermal insulation element comprises: a heat insulating portion covering a portion of the lower surface of the lower spray arm and configured to be disposed opposite to the heating pipe in a vertical direction of the dishwasher; Two connecting parts are connected to two opposite sides of the heat insulating part in the width direction of the lower spray arm and extend upward from the two opposite sides of the heat insulating part. The connecting parts are connected to the lower shell.

5. The lower spray arm assembly according to claim 4, wherein: The lower shell comprises: a bottom plate, disposed opposite to the upper shell; and A panel is arranged around the bottom plate, and the panel includes two long side walls that are opposite to each other and spaced apart in the width direction of the lower spray arm; Wherein, the heat insulation part is attached to the lower surface of the bottom plate, and the two connecting parts are respectively connected to the two long side walls.

6. The lower spray arm assembly according to claim 5, wherein: The connecting portion is snap-fitted, screw-fitted, welded or interference-fitted with the long side wall.

7. The lower spray arm assembly according to claim 5, wherein: Each of the connecting parts comprises: A flange connected to the heat insulating portion at an angle; and a buckle connected to a side of the flange away from the heat insulation portion; Wherein, the long side wall has a buckle groove for engaging with the buckle.

8. The lower spray arm assembly according to claim 7, wherein: The buckle includes: a bending section connected to a side of the flange away from the heat insulating portion and bent relative to the heat insulating portion to snap into the buckle groove; and A limiting section is connected to the side of the bending section away from the flange, and along the length direction of the lower spray arm, the first dimension of the limiting section is larger than the second dimension of the buckle groove, so that the limiting section cannot detach from the long side wall through the buckle groove.

9. The lower spray arm assembly according to claim 8, wherein: A content placement groove is provided on the inner surface of the long side wall, and the limiting section is provided in the content placement groove.

10. The lower spray arm assembly according to claim 7, wherein: The lower shell is also provided with an outer accommodating groove, which extends from the outer surface of one of the long side walls through the bottom plate to the outer surface of the other long side wall; the heat insulation part and the two flanges are at least partially accommodated in the outer accommodating groove.

11. The lower spray arm assembly according to claim 10, wherein: In the depth direction of the outer accommodating groove, the heat insulating portion and the flange do not exceed the groove opening of the outer accommodating groove.

12. The lower spray arm assembly according to claim 7, wherein: Each flange is provided with a plurality of the buckles arranged at intervals, and the plurality of the buckles are correspondingly snapped into the plurality of the buckle grooves.

13. The lower spray arm assembly according to any one of claims 4 to 12, characterized in that: The heat insulating portion and the connecting portion are an integral component.

14. A dishwasher, characterized in that: include: case; An inner liner is disposed in the shell; A heating tube is provided on the bottom shell of the inner container; as well as In the lower spray arm assembly according to any one of claims 1 to 13, the heat insulating member is arranged opposite to the heating pipe in the up-down direction of the dishwasher.

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