Drying device of a dishwasher and dishwasher

Abstract

The application relates to a drying device of a dish washing machine and the dish washing machine, the device comprising an inner container, a hot air assembly and a spray arm assembly arranged on the inner container, the inner container being provided with a washing cavity, the hot air assembly being configured to blow hot air into the washing cavity; the spray arm assembly comprising a lower spray arm and a driving assembly, the lower spray arm being distributed on the inner side of the bottom of the inner container, and the driving assembly distributed on the outer side of the bottom of the inner container being in transmission connection with the lower spray arm to drive the lower spray arm to rotate in the washing cavity. Through the rotation of the lower spray arm in the washing cavity, not only can multi-directional cleaning angles be obtained by rotating the lower spray arm during the cleaning process, but also the air direction of the hot air delivered into the washing cavity by the hot air assembly can be changed through the rotating mode of the lower spray arm during the drying process, so that the hot air is uniformly diffused to all directions of the washing cavity, the drying effect is improved, and the washing cavity space of the inner container is not additionally occupied.

Description

Technical Field

[0001] This application relates to the field of dishwasher technology, and more particularly to a drying device for a dishwasher and a dishwasher. Background Technology

[0002] Traditional dishwasher drying methods generally fall into two categories: the first utilizes residual heat from inside the dishwasher for drying, and the second uses a combination of a heating module and a fan. The first method, using residual heat, doesn't require additional parts, but it necessitates heating the final wash cycle to a very high temperature to effectively utilize this heat, significantly impacting the overall energy consumption. In today's market, where energy efficiency is increasingly prioritized, the heating module and fan method can significantly improve the drying effect of the dishes inside the dishwasher with only a slight increase in overall energy consumption. Therefore, more and more dishwashers on the market are adopting this drying method.

[0003] While the drying method that combines heating modules and fans can improve the drying effect of tableware with only a slight increase in energy consumption, the large size of the inner liner makes it difficult to distribute the hot air entering the inner liner evenly to every part of the inner liner. This results in uneven heat distribution inside the inner liner, which affects the drying effect. Utility Model Content

[0004] Therefore, it is necessary to provide a drying device and dishwasher to address the problem of uneven heat distribution inside the inner drum during the drying process in existing dishwashers.

[0005] The first aspect of this application provides a drying apparatus for a dishwasher, the apparatus comprising an inner tub and a hot air assembly and a spray arm assembly disposed on the inner tub, characterized in that...

[0006] The inner tank has a washing chamber, and the hot air assembly is configured to blow hot air into the washing chamber.

[0007] The spray arm assembly includes a lower spray arm and a drive assembly. The lower spray arm is distributed on the inner side of the bottom of the inner tank, and the drive assembly, distributed on the outer side of the bottom of the inner tank, is connected to the lower spray arm to drive the lower spray arm to rotate in the washing chamber.

[0008] In one embodiment, the air outlet of the hot air assembly extends into the washing chamber, and the connection between the hot air assembly and the washing chamber is distributed on the bottom side of the inner tank.

[0009] The air outlet of the hot air assembly is at a lower level on the inner liner than the lower spray arm is on the inner liner.

[0010] or,

[0011] The air outlet of the hot air assembly is projected in the horizontal direction of the inner liner in at least part of the area of ​​the lower spray arm.

[0012] In one embodiment, an air inlet is provided on the bottom side of the inner liner, and the air inlet is connected to the air outlet of the hot air assembly;

[0013] The horizontal height of the air inlet on the inner liner is lower than the horizontal height of the lower spray arm on the inner liner;

[0014] or,

[0015] The projection of the air inlet in the horizontal direction of the inner liner falls at least partially within the range of the lower spray arm.

[0016] In one embodiment, a first mounting port is provided on the bottom side of the inner tank, and the hot air assembly includes a hot air duct and a fan and a heating element disposed on the hot air duct. At least one end of the hot air duct with an air outlet passes through the first mounting port and extends into the washing chamber.

[0017] In one embodiment, a first sealing ring is also provided between the hot air duct and the first mounting port.

[0018] In one embodiment, the hot air duct includes a duct body and an air guide shroud. The air guide shroud has an air outlet for the hot air duct. The air guide shroud is distributed inside the washing chamber, and the duct body is distributed outside the washing chamber. The air guide shroud and the duct body are connected by bolts.

[0019] And / or,

[0020] The hot air duct has an overall L-shaped cross-section and is distributed on the side of the middle plate of the inner liner.

[0021] In one embodiment, the spray arm assembly further includes a fixed bracket, the drive assembly is disposed on the fixed bracket, the fixed bracket has a liquid guiding cavity and an inlet and an outlet communicating with the liquid guiding cavity, a rotating shaft is rotatably disposed on the fixed bracket, the rotating shaft has a groove structure with open ends, the two ends of the groove structure are respectively connected to the outlet and the lower spray arm, and the rotating shaft is respectively connected to the output end of the drive assembly and the lower spray arm.

[0022] In one embodiment, the drive assembly includes a drive motor and a reduction gear set disposed on the fixed bracket. The rotating shaft is provided with teeth. The input end of the reduction gear set is connected to the output end of the drive motor, and the output end of the reduction gear set is meshed with the teeth on the rotating shaft.

[0023] In one embodiment, a second mounting port is provided at the bottom of the inner liner, and a cover plate is provided between the lower spray arm and the fixed bracket. The cover plate is distributed on the second mounting port, and a first through hole is provided on the cover plate. The rotating shaft passes through the second mounting port and the first through hole in sequence and is connected to the lower spray arm. The cover plate covers the reduction gear set, and the cover plate is connected to the fixed bracket and / or the inner liner.

[0024] In one embodiment, the lower spray arm includes a spray arm body and a connecting shaft. The connecting shaft is a hollow columnar structure with openings at both ends. One end of the columnar structure is connected to the spray arm body, and the other end is inserted into the rotating shaft and engaged with the rotating shaft.

[0025] A dishwasher is provided in the second aspect of this application, including the drying apparatus described in any of the above claims.

[0026] The drying device and dishwasher of the dishwasher in the above embodiments have at least the following beneficial effects:

[0027] This application provides a dishwasher, in which a hot air assembly and a spray arm assembly are respectively provided on the inner tub. The hot air assembly is configured to deliver hot air to the washing chamber to achieve the function of drying the washing chamber. The spray arm assembly includes a lower spray arm and a drive assembly, which are respectively installed on the inner and outer sides of the bottom of the inner tub. The lower spray arm is connected to the drive assembly through a transmission. The drive assembly drives the lower spray arm to rotate in the washing chamber. Not only can the lower spray arm be rotated to obtain a multi-directional washing angle during the washing process, but also the direction of the hot air delivered into the washing chamber by the hot air assembly can be changed during the drying process, so that the hot air is evenly diffused to all directions of the washing chamber, improving the drying effect, and without occupying additional washing chamber space in the inner tub. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the drying device in one embodiment;

[0029] Figure 2 This is an exploded view of a portion of the drying apparatus in one embodiment;

[0030] Figure 3 A cross-section of the drying apparatus in one embodiment. Figure 1 ;

[0031] Figure 4 A cross-section of the drying apparatus in one embodiment. Figure 2 ;

[0032] Figure 5 This is a schematic diagram illustrating the change in the direction of hot air in the washing chamber when the spray arm rotates, according to one embodiment. Figure 1 ;

[0033] Figure 6 This is a schematic diagram illustrating the change in the direction of hot air in the washing chamber when the spray arm rotates, according to one embodiment. Figure 2 ;

[0034] Figure 7 This is a schematic diagram illustrating the change in the direction of hot air in the washing chamber when the spray arm rotates, according to one embodiment. Figure 3 ;

[0035] Figure 8 This is a schematic diagram illustrating the change in the direction of hot air in the washing chamber when the spray arm rotates, according to one embodiment. Figure 4 ;

[0036] Figure 9 This is a schematic diagram of the lower spray arm assembly in one embodiment. Figure 1 ;

[0037] Figure 10 This is a schematic diagram of the lower spray arm assembly in one embodiment. Figure 2 .

[0038] Figure label:

[0039] 10 Inner liner, 11 Top plate, 12 Bottom plate, 13 Back plate, 14 Middle plate, 101 Washing chamber, 102 First mounting port, 103 Second mounting port;

[0040] 20 Hot air assembly, 21 Hot air duct, 211 Duct body, 212 Air guide cover, 213 First sealing ring, 201 Air outlet;

[0041] 30 Spray arm assembly, 31 Lower spray arm, 32 Drive assembly, 33 Fixed bracket, 34 Rotating shaft, 35 Cover plate, 311 Spray arm body, 312 Connecting shaft, 321 Drive motor, 322 Reduction gear set, 3221 Drive gear, 3222 Secondary gear, 341 Tooth, 301 Liquid guiding chamber, 302 Water inlet, 303 Water outlet, 304 First through hole. Detailed Implementation

[0042] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0043] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate for the embodiments of this application described herein.

[0044] like Figure 1-10 As shown, this embodiment provides a drying device for a dishwasher, including an inner tub 10 and a hot air assembly 20 and a spray arm assembly 30 disposed on the inner tub 10.

[0045] The inner tank 10 has a washing chamber 101, and the hot air assembly 20 is configured to blow hot air into the washing chamber 101.

[0046] The spray arm assembly 30 includes a lower spray arm 31 and a drive assembly 32. The lower spray arm 31 is located on the inner side of the bottom of the inner tank 10, and the drive assembly 32, located on the outer side of the bottom of the inner tank 10, is connected to the lower spray arm 31 to drive the lower spray arm 31 to rotate within the washing chamber 101.

[0047] This application discloses a dishwasher in which a hot air assembly 20 and a spray arm assembly 30 are respectively provided on the inner tub 10. The hot air assembly 20 is configured to deliver hot air to the washing chamber 101 to achieve the function of drying the washing chamber 101. The spray arm assembly 30 includes a lower spray arm 31 and a drive assembly 32. The lower spray arm 31 and the drive assembly 32 are respectively installed on the inner and outer sides of the bottom of the inner tub 10. The lower spray arm 31 is connected to the drive assembly 32 through transmission. The drive assembly 32 drives the lower spray arm 31 to rotate in the washing chamber 101. Not only can the lower spray arm 31 be rotated to obtain a multi-directional cleaning angle during the washing process, but also the direction of the hot air delivered into the washing chamber 101 by the hot air assembly 20 can be changed during the drying process, so that the hot air is evenly diffused to all directions of the washing chamber 101, improving the drying effect, and without occupying additional space in the washing chamber 101 of the inner tub 10.

[0048] The inner liner 10 can be a frame structure with an opening on one side, and a washing chamber 101 for washing tableware is formed in the frame structure. The frame structure can include a top plate 11, a bottom plate 12, a back plate 13, and middle plates 14 on the left and right sides.

[0049] The hot air assembly 20 can deliver hot air into the washing chamber 101 to achieve a drying effect within the washing chamber 101. For example, the hot air assembly 20 may include a fan, a heating element, and a hot air duct 21. The hot air duct 21 is connected to the washing chamber 101. The fan draws outside air into the hot air duct 21 and transfers heat to the heating element to deliver hot air into the washing chamber 101.

[0050] The spray arm assembly 30 may include a lower spray arm 31 and a drive assembly 32. The lower spray arm 31 can be connected to the dishwasher's liquid delivery system and spray cleaning liquid onto the dishes in the washing chamber 101 through multiple spray holes on the lower spray arm 31. The drive assembly 32 can be used to drive the lower spray arm 31 to rotate within the washing chamber 101. This not only allows for multi-directional cleaning angles during the washing process but also changes the direction of the hot air delivered into the washing chamber 101 by rotating the lower spray arm 31 during the drying process.

[0051] It should be noted that the spray arm assembly 30 may also include a middle spray arm and / or an upper spray arm. The middle spray arm or the upper spray arm may be coaxially rotatably connected to the lower spray arm 31, or the middle spray arm or the upper spray arm may be respectively connected to the drive assembly 32 for transmission.

[0052] like Figures 2 to 4 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the air outlet 201 of the hot air assembly 20 extends into the washing chamber 101, and the connection between the hot air assembly 20 and the washing chamber 101 is distributed on the bottom side of the inner tank 10.

[0053] The air outlet 201 of the hot air assembly 20 is at a lower horizontal height on the inner liner 10 than the lower spray arm 31 is at a lower horizontal height on the inner liner 10.

[0054] or,

[0055] The projection of the air outlet 201 of the hot air assembly 20 onto the inner liner 10 in the horizontal direction at least partially falls within the range of the lower spray arm 31.

[0056] The above embodiment further defines that the air outlet 201 of the hot air assembly 20 is distributed on the bottom side of the washing chamber 101. When the hot air assembly 20 sends hot air into the washing chamber 101, the hot air first gathers in a certain area at the bottom of the washing chamber 101. The horizontal height of the air outlet 201 of the hot air assembly 20 on the inner tank 10 is lower than the horizontal height of the lower spray arm 31 on the inner tank 10, or the projection of the air outlet 201 of the hot air assembly 20 on the inner tank 10 in the horizontal direction at least partially falls within the range of the lower spray arm 31. When the lower spray arm 31 rotates in the washing chamber 101 under the action of the driving assembly 32, the hot air directly contacts the surface of the lower spray arm 31, thereby changing the direction of the hot air. Combined with the upward floating characteristic of the hot air in the washing chamber 101, the hot air is diffused to all directions of the washing chamber 101, solving the problem of uneven heat distribution in the washing chamber 101.

[0057] The outlet 201 of the hot air assembly 20 can extend into the washing chamber 101, directly outputting hot air to the washing chamber 101. The connection between the hot air assembly 20 and the washing chamber 101 can be distributed on the bottom side of the inner tank 10, so that the hot air delivered from the hot air assembly 20 is first distributed to the bottom of the washing chamber 101. Due to the low density of hot air, the hot air is subjected to an upward buoyancy within the washing chamber 101, thereby diffusing the hot air to the top of the washing chamber 101. In addition, by distributing the outlet 201 of the hot air assembly 20 at a horizontal height lower than that of the lower spray arm 31 in the washing chamber 101, or by ensuring that the projection of the outlet 201 of the hot air assembly 20 in the horizontal direction of the inner tank 10 at least partially falls within the range of the lower spray arm 31, the surface of the lower spray arm 31 directly contacts the hot air during rotation, thereby driving a change in the direction of the hot air.

[0058] In addition to the features of the above embodiments, this embodiment further specifies that: an air inlet is provided on the bottom side of the inner liner 10, and the air inlet is connected to the air outlet 201 of the hot air assembly 20;

[0059] The horizontal height of the air inlet on the inner liner 10 is lower than the horizontal height of the lower spray arm 31 on the inner liner 10;

[0060] or,

[0061] The projection of the air inlet in the horizontal direction of the inner liner 10 falls at least partially within the range of the lower spray arm 31.

[0062] Unlike the embodiments described above, the hot air delivered by the hot air assembly 20 needs to be transported into the washing chamber 101 through the air inlet on the inner tank 10. Since the horizontal height of the air inlet on the inner tank 10 is lower than the horizontal height of the lower spray arm 31 on the inner tank 10, or the projection of the air inlet on the horizontal direction of the inner tank 10 at least partially falls within the range of the lower spray arm 31, the surface of the lower spray arm 31 directly contacts the hot air during the rotation process, thereby driving the change of the airflow direction of the hot air. Combined with the upward floating characteristic of the hot air in the washing chamber 101, the hot air is diffused to all directions of the washing chamber 101, thus solving the problem of uneven heat distribution in the washing chamber 101.

[0063] It should be noted that the air inlet is connected to the air outlet 201 of the hot air assembly 20. This connection can be achieved by using the hot air duct 21 of the hot air assembly 20 to connect to the inner tank 10 via bolts, clips, or other means, and by inserting the air outlet 201 of the hot air duct 21 into the air inlet on the inner tank 10. Additionally, a guide plate can be provided at the air inlet on the inner tank 10. This guide plate can divide the hot air from the air inlet into multiple segments, allowing the hot air to be delivered into the washing chamber 101 from different horizontal directions.

[0064] like Figures 2 to 4As shown, in addition to the features of the above embodiments, this embodiment further specifies that: a first mounting port 102 is provided on the bottom side of the inner liner 10, the hot air assembly 20 includes a hot air duct 21 and a fan and a heating element disposed on the hot air duct 21, and one end of the hot air duct 21 with an air outlet 201 at least partially penetrates the first mounting port 102 and extends into the washing chamber 101.

[0065] Specifically, a first mounting port 102 for installing a hot air duct 21 is provided on the bottom side of the inner liner 10. By inserting one end of the hot air duct 21 with an air outlet 201 into the first mounting port 102, at least a portion of the hot air duct 21 extends into the washing chamber 101, so that the air outlet 201 of the hot air duct 21 is connected to the washing chamber 101.

[0066] The fan can be located at one end of the hot air duct 21 near the air inlet, and the heating element can be distributed along the length of the hot air duct 21. The fan draws in air at the air inlet of the hot air duct 21 and transmits it along the path of the hot air duct 21, and transfers heat with the heat generated by the heating element, thereby forming hot air and delivering it into the washing chamber 101.

[0067] like Figure 2 and Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: a first sealing ring 213 is also provided between the hot air duct 21 and the first mounting port 102, which is used to seal the gap between the hot air duct 21 and the first mounting port 102, so as to prevent the hot air in the washing chamber 101 from escaping the washing chamber 101 through the gap between the two, and to ensure the drying effect.

[0068] like Figures 2 to 4 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the hot air duct 21 includes a duct body 211 and a guide hood 212. The guide hood 212 is provided with an air outlet 201 of the hot air duct 21. The guide hood 212 is distributed inside the washing chamber 101, and the duct body 211 is distributed outside the washing chamber 101. The guide hood 212 and the duct body 211 are connected by bolts.

[0069] The air duct body 211 may be provided with a threaded hole, and the air duct body 211 is provided with a second through hole corresponding to the position of the threaded hole.

[0070] Based on the first mounting port 102 opened on the inner liner 10, bolts at least partially pass through the second through hole, the first mounting port 102, and the threaded hole on the air guide shroud 212 to achieve a threaded connection, thereby realizing a reliable connection between the air guide shroud 212 and the air duct body 211. The hot air discharged from the air duct body 211 is transported to the washing chamber 101 through the air guide shroud 212. In addition, a guide plate can be set on the air guide shroud 212 to divide the air outlet 201 of the hot air assembly 20 into multiple air outlets in different directions, thereby dividing the hot air into multiple segments on the air guide shroud 212 so that the hot air is sent into the washing chamber 101 from different directions at a horizontal position.

[0071] It should be noted that the first sealing ring 213 can be set between the air duct body 211 and the first mounting port 102. Since the air duct body 211 and the air guide cover 212 are connected by bolts and threaded holes, the first sealing ring 213 can seal the gap between the air guide cover 212, the first mounting port 102 and the air duct body 211.

[0072] like Figures 2 to 4 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the cross-section of the hot air duct 21 is generally L-shaped and is distributed on the side of the middle plate 14 of the inner liner 10.

[0073] The above embodiment further defines the L-shaped hot air duct 21 as being distributed on the side of the middle plate 14 of the inner tank 10, which can provide a reasonable design for the hot air duct 21 in the dishwasher and avoid increasing the size of the dishwasher.

[0074] The hot air duct 21 can have an L-shaped cross section. The horizontal part of the hot air duct 21 is inserted into the washing chamber 101 through the first mounting port 102, and the vertical part of the hot air duct 21 can be attached to the side of the middle plate 14 of the inner tank 10.

[0075] like Figures 2 to 4 , Figure 9 and Figure 10 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the spray arm assembly 30 also includes a fixed bracket 33, the drive assembly 32 is disposed on the fixed bracket 33, the fixed bracket 33 has a liquid guiding cavity 301 and an inlet 302 and an outlet 303 communicating with the liquid guiding cavity 301, a rotating shaft 34 is rotatably disposed on the fixed bracket 33, the inside of the rotating shaft 34 is a groove structure with openings at both ends, the two ends of the groove structure are respectively connected to the outlet 303 and the lower spray arm 31, and the rotating shaft 34 is respectively connected to the output end of the drive assembly 32 and the lower spray arm 31.

[0076] The above embodiment further defines the internal structure of the rotating shaft 34 as a tank structure with openings at both ends. The two openings of the rotating shaft 34 are respectively connected to the water outlet 303 of the liquid guiding cavity 301 and the lower spray arm 31, so that the liquid guiding cavity 301 is connected to the lower spray arm 31 through the rotating shaft 34. Then, the rotating shaft 34 is connected to the output end of the drive assembly 32 and the lower spray arm 31 through transmission. The drive assembly 32 can drive the rotating shaft 34 to rotate relative to the fixed bracket 33, thereby driving the lower spray arm 31 to rotate in the washing chamber 101. Thus, during the washing process, the rotation of the lower spray arm 31 can spray the cleaning liquid in all directions of the washing chamber 101. During the drying process, the rotation of the lower spray arm 31 can change the direction of the hot air entering the washing chamber 101.

[0077] The fixed bracket 33 may form a liquid guiding cavity 301 and an inlet 302 and an outlet 303 connected to the liquid guiding cavity 301. The inlet 302 can be connected to the liquid delivery system of the dishwasher. The liquid delivery system of the dishwasher delivers cleaning liquid into the liquid guiding cavity 301 through the inlet 302, and delivers the cleaning liquid to the rotating shaft 34 through the outlet 303.

[0078] The rotating shaft 34 can be a tank structure with openings at both ends. The two openings of this tank structure are respectively connected to the outlet 303 of the liquid guiding chamber 301 and the lower spray arm 31. The cleaning fluid discharged from the outlet 303 is transported to the lower spray arm 31 through the tank structure in the rotating shaft 34. Specifically, the rotating shaft 34 is rotatably mounted on the fixed bracket 33. The rotating shaft 34 can rotate relative to the fixed bracket 33 under the action of external force. Since the rotating shaft 34 is connected to the output end of the drive assembly 32 and the lower spray arm 31, when the drive assembly 32 is running, it can drive the rotating shaft 34 to rotate. At the same time, the rotating shaft 34 drives the lower spray arm 31 to rotate.

[0079] like Figure 9 and Figure 10 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the drive assembly 32 includes a drive motor 321 and a reduction gear set 322 disposed on the fixed bracket 33, the rotating shaft 34 is provided with teeth 341, the input end of the reduction gear set 322 is connected to the output end of the drive motor 321, and the output end of the reduction gear set 322 is meshed with the teeth 341 on the rotating shaft 34.

[0080] The above embodiment further specifies that the drive motor 321 drives the rotating shaft 34 to rotate relative to the fixed bracket 33 through the reduction gear set 322. This can reduce the high speed of the motor proportionally according to the reduction ratio, while amplifying the output torque of the motor proportionally according to the reduction ratio. This allows the relatively compact drive motor 321 to easily drive the lower spray arm 31 to rotate within the washing chamber 101, which not only reduces costs but also reduces the space occupied by the drive assembly 32 in the dishwasher.

[0081] The rotating shaft 34 has teeth 341 on its surface. By directly machining the teeth 341 onto the rotating shaft 34, it functions like a large gear, eliminating the need for an additional output shaft, coupling, or transmission mechanism to connect the output end of the reduction gear set 322 to the rotating shaft 34. This simplifies the structure, reduces costs, minimizes gaps or elastic deformation caused by intermediate connections, and improves the system's rigidity and precision. Furthermore, the reduction gear set 322 may include a drive gear 3221 and a secondary gear 3222. The drive gear 3221 and secondary gear 3222 are rotatably mounted on the fixed bracket 33. The drive gear 3221 is connected to the output end of the drive motor 321 and meshes with the secondary gear 3222. The secondary gear meshes with the teeth 341 of the rotating shaft 34. The drive motor 321 drives the rotating shaft 34 to rotate relative to the fixed bracket 33 by sequentially driving the drive gear 3221 and the secondary gear 3222. It should be noted that in other embodiments, the reduction gear set 322 may also include a third-stage gear, a fourth-stage gear, or a multi-stage gear.

[0082] like Figure 2 and Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: a second mounting port 103 is provided at the bottom of the inner liner 10, a cover plate 35 is provided between the lower spray arm 31 and the fixed bracket 33, the cover plate 35 is distributed on the second mounting port 103, a first through hole 304 is provided on the cover plate 35, the rotating shaft 34 passes through the second mounting port 103 and the first through hole 304 in sequence and is connected to the lower spray arm 31, the cover plate 35 covers the reduction gear set 322, and the cover plate 35 is connected to the fixed bracket 33 and / or the inner liner 10.

[0083] The cover plate 35 can be installed at the second mounting port 103 on the washing chamber 101, and the cover plate 35 can cover the fixed bracket 33 to cover the reduction gear set 322, preventing the cleaning fluid in the washing chamber 101 from flowing through the second mounting port 103 to the fixed bracket 33, thereby preventing damage to the drive motor 321 or the reduction gear set 322. In addition, a second sealing ring can be provided between the cover plate 35 and the second mounting port 103 to seal the gap between the cover plate 35, the second mounting port 103 and the fixed bracket 33, thereby improving the sealing performance.

[0084] It should be noted that the cover plate 35 and the fixed bracket 33 can be detachably connected by means of threaded connection, snap fastener, bolt, etc.

[0085] like Figures 2 to 4As shown, in addition to the features of the above embodiments, this embodiment further defines that: the lower spray arm 31 includes a spray arm body 311 and a connecting shaft 312. The connecting shaft 312 is a hollow columnar structure with openings at both ends. One end of the columnar structure is connected to the spray arm body 311, and the other end is inserted into the rotating shaft 34 and engaged with the rotating shaft 34.

[0086] The spray arm body 311 can be horizontally mounted on the washing chamber 101. The spray arm body 311 has a liquid distribution channel inside and multiple spaced spray holes on its surface. Cleaning liquid, delivered into the liquid distribution channel via the liquid guiding chamber 301, is sprayed onto the tableware through these spray holes. Based on the internal groove structure of the rotating shaft 34 (open at both ends), the columnar connecting shaft 312 can be inserted into the groove structure of the rotating shaft 34. A snap-fit ​​structure is formed between the connecting shaft 312 and the rotating shaft 34, thereby achieving a transmission connection between them. For example, a limiting groove is provided on the rotating shaft 34, and a limiting block is provided on the surface of the connecting shaft 312. During the insertion of the connecting shaft 312 into the groove structure of the rotating shaft 34, the limiting block inserts into the limiting groove to achieve the snap-fit ​​between the rotating shaft 34 and the connecting shaft 312.

[0087] This embodiment provides a dishwasher, including the drying device described above.

[0088] The above embodiments merely illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A drying device for a dishwasher, characterized in that, Including an inner liner (10) and a hot air assembly (20) and a spray arm assembly (30) disposed on the inner liner (10), characterized in that, The inner liner (10) has a washing chamber (101), and the hot air assembly (20) is configured to blow hot air into the washing chamber (101); The spray arm assembly (30) includes a lower spray arm (31) and a drive assembly (32). The lower spray arm (31) is distributed on the inner side of the bottom of the inner tank (10). The drive assembly (32) distributed on the outer side of the bottom of the inner tank (10) is connected to the lower spray arm (31) to drive the lower spray arm (31) to rotate in the washing chamber (101).

2. The drying device of the dishwasher according to claim 1, characterized in that, The air outlet (201) of the hot air assembly (20) extends into the washing chamber (101), and the connection between the hot air assembly (20) and the washing chamber (101) is distributed on the bottom side of the inner tank (10). The air outlet (201) of the hot air assembly (20) is at a lower horizontal height on the inner liner (10) than the lower spray arm (31) is at a lower horizontal height on the inner liner (10); or, The projection of the air outlet (201) of the hot air assembly (20) in the horizontal direction of the inner liner (10) at least partially falls within the range of the lower spray arm (31).

3. The drying device for a dishwasher according to claim 1, characterized in that, An air inlet is provided on the bottom side of the inner liner (10), and the air inlet is connected to the air outlet (201) of the hot air assembly (20); The horizontal height of the air inlet on the inner liner (10) is lower than the horizontal height of the lower spray arm (31) on the inner liner (10); or, The projection of the air inlet in the horizontal direction of the inner liner (10) falls at least partially within the range of the lower spray arm (31).

4. The drying device of the dishwasher according to claim 2, characterized in that, The inner liner (10) has a first mounting port (102) on its bottom side. The hot air assembly (20) includes a hot air duct (21) and a fan and a heating element disposed on the hot air duct (21). At least one end of the hot air duct (21) with an air outlet (201) passes through the first mounting port (102) and extends into the washing chamber (101).

5. The drying apparatus of the dishwasher according to claim 4, characterized in that, The hot air duct (21) includes a duct body (211) and an air guide shroud (212). The air guide shroud (212) has an air outlet (201) of the hot air duct (21). The air guide shroud (212) is located inside the washing chamber (101), and the duct body (211) is located outside the washing chamber (101). The air guide shroud (212) and the duct body (211) are connected by bolts. And / or, The hot air duct (21) has an overall L-shaped cross-section and is distributed on the side of the middle plate (14) of the inner liner (10).

6. The drying apparatus of the dishwasher according to any one of claims 1 to 5, characterized in that, The spray arm assembly (30) also includes a fixed bracket (33), and the drive assembly (32) is disposed on the fixed bracket (33). The fixed bracket (33) has a liquid guiding cavity (301) and an inlet (302) and an outlet (303) communicating with the liquid guiding cavity (301). A rotating shaft (34) is rotatably disposed on the fixed bracket (33). The rotating shaft (34) has a groove structure with open ends. The two ends of the groove structure are respectively connected to the outlet (303) and the lower spray arm (31), and the rotating shaft (34) is connected to the output end of the drive assembly (32) and the lower spray arm (31) respectively.

7. The drying apparatus of the dishwasher according to claim 6, characterized in that, The drive assembly (32) includes a drive motor (321) and a reduction gear set (322) disposed on the fixed bracket (33). The rotating shaft (34) is provided with teeth (341). The input end of the reduction gear set (322) is connected to the output end of the drive motor (321), and the output end of the reduction gear set (322) is meshed with the teeth (341) on the rotating shaft (34).

8. The drying apparatus of the dishwasher according to claim 7, characterized in that, The bottom of the inner liner (10) is provided with a second mounting port (103). A cover plate (35) is provided between the lower spray arm (31) and the fixed bracket (33). The cover plate (35) is distributed on the second mounting port (103). A first through hole (304) is provided on the cover plate (35). The rotating shaft (34) passes through the second mounting port (103) and the first through hole (304) in sequence and is connected to the lower spray arm (31). The cover plate (35) covers the reduction gear set (322) and is connected to the fixed bracket (33) and / or the inner liner (10).

9. The drying apparatus of the dishwasher according to claim 6, characterized in that, The lower spray arm (31) includes a spray arm body (311) and a connecting shaft (312). The connecting shaft (312) is a hollow columnar structure with openings at both ends. One end of the columnar structure is connected to the spray arm body (311), and the other end is inserted into the rotating shaft (34) and engaged with the rotating shaft (34).

10. A dishwasher, characterized in that, The drying apparatus includes any one of claims 1-9.

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