Water tank assembly and dishwasher

Abstract

Provided are a water tank assembly (100) and a dishwasher. The water tank assembly (100) comprises a water tank (3) and a heat exchange unit (44); the water tank (3) is provided with a water storage space (301) and a heat exchange space (302); the heat exchange unit (44) is arranged in the heat exchange space (302), a first heat exchange channel and a second heat exchange channel (3032) distributed spaced apart from each other are partitioned in the heat exchange space (302), the first heat exchange channel is communicated with the water storage space (301), and the second heat exchange channel (3032) works in conjunction with the first heat exchange channel in a heat exchange manner.

Description

Water tank assembly and dishwasher

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese patent application No. 202411220063.8, filed on August 30, 2024, entitled "Water Tank Assembly and Dishwasher", the entire contents of which are incorporated herein by reference.

[0003] This application claims priority to Chinese patent application No. 202422140848.6, filed on August 30, 2024, entitled "Water Tank Assembly and Dishwasher", the entire contents of which are incorporated herein by reference. Technical Field

[0004] This application relates to the field of kitchen appliance technology, and in particular to a water tank assembly and a dishwasher. Background Technology

[0005] In related technologies, dishwashers generally use electrically heated high-temperature hot water to wash dishes, and the wastewater after washing is directly discharged, thus wasting a lot of heat and increasing the energy consumption of the dishwasher. Summary of the Invention

[0006] One objective of this application is to provide a water tank assembly that incorporates a heat exchange space and a water storage space within the water tank, thereby enabling the heat exchange space to exchange heat with the water in the water storage space, thus improving heat exchange efficiency and energy efficiency.

[0007] Another object of this application is to provide a dishwasher including the aforementioned water tank assembly.

[0008] According to an embodiment of this application, a water tank assembly is used in a dishwasher. The water tank assembly includes: a water tank having a water storage space and a heat exchange space; and a heat exchange unit disposed in the heat exchange space, wherein a first heat exchange channel and a second heat exchange channel are spaced apart within the heat exchange space. The first heat exchange channel communicates with the water storage space, and the second heat exchange channel and the first heat exchange channel cooperate in heat exchange.

[0009] According to the water tank assembly of the present application embodiment, a heat exchange space and a water storage space are provided in the water tank, which can utilize the heat exchange space to exchange heat with the water in the water storage space, thereby improving heat exchange efficiency and energy efficiency.

[0010] In addition, the water tank assembly according to the above embodiments of this application may also have the following additional technical features:

[0011] In some embodiments, the water tank includes a main body and a partition, the partition connecting the main body and separating the water storage space and the heat exchange space within the main body.

[0012] In some embodiments, the main body includes a bottom shell and a cover plate, the bottom shell and the cover plate being distributed opposite to each other, and the separator being disposed between the bottom shell and the cover plate.

[0013] In some embodiments, the separator includes a first annular rib, the inner side of which forms the heat exchange space, and the water storage space is located on the outer side of the first annular rib.

[0014] In some embodiments, the separator further includes a second annular rib that surrounds the first annular rib and is spaced apart from the first annular rib.

[0015] In some embodiments, the separator further includes a plurality of connecting ribs disposed between the first annular rib and the second annular rib and connected to the first annular rib and the second annular rib, the plurality of connecting ribs being distributed around the first annular rib.

[0016] In some embodiments, the separator is integrally formed with the bottom shell.

[0017] In some embodiments, the cover plate is welded, bonded, or heat-fused to the separator.

[0018] In some embodiments, the heat exchange space includes a first diversion channel, a first confluence channel, and a heat exchange zone, wherein the heat exchange zone is disposed between the first diversion channel and the first confluence channel, the heat exchange unit is disposed in the heat exchange zone, and the first diversion channel and the first confluence channel are connected to the first heat exchange channel.

[0019] In some embodiments, the heat exchange unit includes a plurality of heat exchange tubes disposed in the heat exchange space, a first heat exchange channel is constructed inside the heat exchange tubes to connect the first diversion channel and the first confluence channel, and a second heat exchange channel is constructed outside the heat exchange tubes to cooperate with the first heat exchange channel in heat exchange.

[0020] In some embodiments, the water tank assembly further includes a first partition component and a second partition component, the first partition component and the second partition component being respectively disposed at both ends of the heat exchange zone, and the two ends of the plurality of heat exchange tubes respectively passing through the first partition component and the second partition component.

[0021] In some embodiments, the first diversion channel is located below the heat exchange zone, and the first confluence channel is located above the heat exchange zone.

[0022] In some embodiments, the heat exchange space is provided with a first inlet and a first outlet, the first inlet being connected to the first diversion channel and the first outlet being connected to the first confluence channel.

[0023] In some embodiments, the first water inlet is located on the lower side wall of the heat exchange space, and the first water outlet is located on the upper side wall of the heat exchange space.

[0024] In some embodiments, the heat exchange space is further provided with a second inlet and a second outlet, the second inlet and the second outlet being connected to the heat exchange zone.

[0025] In some embodiments, the second water inlet is located on the lower side wall of the heat exchange space, and the second water outlet is located on the upper side wall of the heat exchange space.

[0026] In some embodiments, the water tank is further provided with multiple flow paths and multiple water interface, at least a portion of the multiple water interface being connected to the multiple flow paths respectively, and the multiple flow paths including a heat exchange flow path connected to the first heat exchange channel or the second heat exchange channel.

[0027] In some embodiments, the heat exchange flow path includes a first flow path, the plurality of water interface includes a first interface and a second interface, one end of the first heat exchange channel is connected to the water storage space, one end of the first flow path is connected to the other end of the first heat exchange channel, the other end of the first flow path is connected to the first interface, and the second interface is connected to the water storage space.

[0028] In some embodiments, the first heat exchange channel extends in a vertical direction, the upper end of the first heat exchange channel is connected to the water storage space, the upper end of the first flow path is connected to the lower end of the first heat exchange channel, and the lower end of the first flow path is connected to the first interface.

[0029] In some embodiments, the second interface is connected to the lower end of the water storage space.

[0030] In some embodiments, the heat exchange flow path further includes a third flow path and a fourth flow path, and the plurality of water interface includes a third interface and a fourth interface. One end of the third flow path is connected to one end of the second heat exchange channel and the other end is connected to the third interface. One end of the fourth flow path is connected to the other end of the second heat exchange channel and the other end is connected to the fourth interface.

[0031] In some embodiments, the second heat exchange channel extends in a vertical direction, the lower end of the second heat exchange channel is connected to the third flow path, and the upper end of the second heat exchange channel is connected to the fourth flow path.

[0032] In some embodiments, the plurality of flow paths further includes a fifth flow path and a sixth flow path, wherein the lower end of the fifth flow path is connected to the second heat exchange channel, and the upper end of the fifth flow path extends to the upper part of the water tank and connects to the external space of the water tank; the upper end of the sixth flow path is connected to the upper end of the fifth flow path, and the lower end is connected to the fourth flow path.

[0033] In some embodiments, the heat exchange flow path includes a first flow path, a third flow path, and a fourth flow path, and the plurality of water interface interfaces include a first interface, a second interface, a third interface, and a fourth interface.

[0034] The first interface, the second interface, the third interface, and the fourth interface are arranged side by side at the lower end of the water tank.

[0035] In some embodiments, the first flow path, the third flow path, and the fourth flow path extend in a vertical direction, with the first flow path disposed between the third flow path and the fourth flow path.

[0036] In some embodiments, the plurality of water inlets are arranged at the lower end of the water tank along the width direction of the water tank.

[0037] In some embodiments, the heat exchange flow path includes a plurality of paths arranged side by side along the width direction of the water tank.

[0038] In some embodiments, the heat exchange flow path extends in a vertical direction, and the upper end of the heat exchange flow path is connected to the first heat exchange channel or the second heat exchange channel, and the lower end of the heat exchange flow path is connected to the corresponding water channel interface.

[0039] In some embodiments, the plurality of flow paths further includes a water inlet flow path, and the plurality of water path interfaces include a fifth interface and a sixth interface, with the two ends of the water inlet flow path connected to the fifth interface and the sixth interface, respectively.

[0040] A dishwasher according to an embodiment of this application includes: a water cup; the aforementioned water tank assembly, wherein the second heat exchange channel is connected to the water cup. Attached Figure Description

[0041] Figure 1 is a schematic diagram of a water tank according to an embodiment of this application.

[0042] Figure 2 is a magnified view of a portion of area A circled in Figure 1.

[0043] Figure 3 is an explosion diagram of a water tank according to an embodiment of this application.

[0044] Figure 4 is a schematic diagram of the flow path system of a dishwasher according to an embodiment of this application.

[0045] Reference numerals: Water tank assembly 100, water tank 3, water storage space 301, heat exchange space 302, heat exchange unit 44, main body 305, partition 306, bottom shell 3051, cover plate 3052, first annular rib 3061, second annular rib 3062, connecting rib 3063, first diversion channel 3071, second diversion channel 3072, first confluence channel 3073, second confluence channel 3074, first partition assembly 3081, second partition assembly 3082, first inlet 3091, second inlet 3092, first outlet 3093, second outlet 3094, first flow path 311, first interface 321, second interface 322, third flow path 313, fourth flow path 314, third interface 323, fourth interface 324, fifth flow path 315, sixth flow path 316, fifth interface 325, sixth interface 326, and so on. 7. Interface 327, 8. Interface 328, 2. Second channel 2, 4. Water tank inlet 4, 5. Inner tank connection port 5, 6. Cold water outlet 6, heat exchange space, 8. Water supply path 8, 11. Check valve 11, 12. Water inlet path 12, 13. Drainage anti-siphon structure 13, 14. Flow meter 14, 15. First pipe 16, 17. Drainage pipe 17, 18. Water inlet pipe 18, 19. Water softener 20, 21. First connection port 21, 22. First cold water pipe 23, 24. First switch valve 24, 25. Water distribution structure 25, 26. Water pump 26, 27. Second cold water pipe 28, 29. Water cup inlet 29, 30. Drain pump 30, 31. First hot water pipe 31, 32. Second switch valve 32, 33. Second hot water pipe 33, 34. Circulation pump 34, 35. Water distribution valve 35, 36. Water cup 36, 37. Lower spray arm 37, 38. Middle spray arm 38, 39. Upper spray arm 39, 40. Inner tank 40, 41. Fifth pipe 41, 42. Sixth pipe 42, 43. Anti-siphon device 43. Detailed Implementation

[0046] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0047] As shown in Figures 1 and 2, the water tank assembly 100 according to an embodiment of this application is used in a dishwasher. The water tank assembly 100 includes a water tank 3, which has a water storage space 301 and a heat exchange space 302. The water storage space 301 can be used for temporary water storage and can be used in the washing process of the dishwasher. The water stored in the water tank 3 can also be pre-treated to improve the washing efficiency of the dishwasher. For example, the water stored in the water tank 3 can be preheated to reduce the need to heat water during the washing process; or the waste heat generated during the washing process of the dishwasher can be collected to heat the water in the water tank 3 to achieve waste heat recovery. The water tank assembly 100 may also include a heat exchange unit 44, which is disposed in the heat exchange space 302 and is divided into a first heat exchange channel (not shown in the figure) and a second heat exchange channel 3032 within the heat exchange space 302. The first heat exchange channel and the second heat exchange channel 3032 are spaced apart. The first heat exchange channel is connected to the water storage space 301, and the second heat exchange channel 3032 is heat exchanged with the first heat exchange channel. The water in the water tank 3 can be heated by heat exchange between the first heat exchange channel and the second heat exchange channel 3032. The second heat exchange channel 3032 can be filled with wastewater from the dishwasher washing process or other types of water to heat the water in the water tank 3.

[0048] According to the water tank assembly 100 of this application embodiment, a heat exchange space 302 and a water storage space 301 are disposed in the water tank 3. The heat exchange space 302 can be used to exchange heat with the water in the water storage space 301, thereby improving heat exchange efficiency and energy efficiency. In addition, the water storage space 301 and the heat exchange space 302 of the water tank assembly 100 are integrated together, which can make full use of the heat of the fluid introduced into the second heat exchange channel 3032, thereby further improving heat exchange efficiency and heat recovery efficiency.

[0049] The water tank 3 in this application can have various different structures. For example, the water tank 3 can be configured to include a first shell and a second shell, with a hollow structure in the first shell and the second shell in the hollow structure. This application also provides some embodiments of the water tank 3, as shown in Figures 2 and 3. The water tank 3 includes a main body 305 and a partition 306. The partition 306 connects to the main body 305 and divides the main body 305 into a water storage space 301 and a heat exchange space 302. The partition 306 separates the water storage space 301 and the heat exchange space 302, facilitating the construction of both spaces within the water tank 3 and simplifying its structure. Furthermore, the partition 306 allows some of the heat lost from the heat exchange space 302 to be absorbed by the water in the water storage space 301, reducing heat loss and improving energy efficiency.

[0050] The main body 305 includes a bottom shell 3051 and a cover plate 3052, which are distributed relatively separately. A separator 306 is disposed between the bottom shell 3051 and the cover plate 3052. The separator 306 includes a first annular rib 3061. The inner side of the first annular rib 3061 forms a heat exchange space 302, and the water storage space 301 is disposed on the outer side of the first annular rib 3061. The first annular rib 3061 can form the peripheral wall of the heat exchange space 302, while the bottom shell 3051 and the cover plate 3052 can form the top and bottom walls of the heat exchange space 302. Thus, the heat exchange space 302 can be constructed by the bottom shell 3051, the cover plate 3052, and the first annular rib 3061, simplifying the structure of the water tank 3. Furthermore, the isolation provided by the first annular rib 3061 can improve the structural strength and stability of the water tank 3, prevent water from leaking from the heat exchange space 302 into the water storage space 301, and extend the service life of the water tank 3.

[0051] Optionally, the separator 306 further includes a second annular rib 3062, which surrounds the first annular rib 3061 and is spaced apart from it. The cooperation of the second annular rib 3062 and the first annular rib 3061 further improves the isolation effect between the heat exchange space 302 and the water storage space 301, preventing water leakage from the water tank 3 and improving the stability and structural strength of the water tank 3.

[0052] Furthermore, the separator 306 also includes a plurality of connecting ribs 3063, which are disposed between the first annular rib 3061 and the second annular rib 3062 and connected to the first annular rib 3061 and the second annular rib 3062. The plurality of connecting ribs 3063 are distributed around the first annular rib 3061. This can further improve the structural strength and stability of the water tank 3.

[0053] In some embodiments of this application, the partition 306 is integrally formed with the bottom shell 3051; and / or, the cover plate 3052 is welded, bonded, or heat-fused to the partition 306. This simplifies the structure of the water tank 3 and facilitates its manufacture and forming.

[0054] In some embodiments of this application, the heat exchange space 302 includes a first diversion channel 3071, a first confluence channel 3073, and a heat exchange zone (not shown in the figure, refer to the area between the first diversion channel 3071 and the first confluence channel 3073 in Figure 2). The heat exchange zone is located between the first diversion channel 3071 and the first confluence channel 3073, and the heat exchange unit 44 is located in the heat exchange zone. The first diversion channel 3071 and the first confluence channel 3073 are connected to a first heat exchange channel. A first type of fluid can be introduced into the first diversion channel 3071 and then flow into the first heat exchange channel through the first diversion channel 3071, thereby enabling the first type of fluid to be introduced into the first heat exchange channel stably and relatively uniformly. After heat exchange, the first type of fluid in the first heat exchange channel will be introduced into the first confluence channel 3073, and after converging in the first confluence channel 3073, it will be discharged from the heat exchange space 302. This enables heat exchange between the first and second fluids within the heat exchange section, improving the heat exchange effect and efficiency, avoiding a situation where more fluid is introduced into a localized area of ​​the heat exchange section while less fluid is introduced into other areas, and improving the uniformity of fluid flow.

[0055] The heat exchange unit 44 may include a plurality of heat exchange tubes 441, which are disposed in the heat exchange space 302. A first heat exchange channel is constructed inside the heat exchange tubes 441, connecting the first diversion channel 3071 and the first confluence channel 3073. A second heat exchange channel 3032 is constructed outside the heat exchange tubes 441 to cooperate with the first heat exchange channel in heat exchange. The heat exchange tubes 441 can be arranged at intervals along the width of the heat exchange space 302. A first heat exchange channel is constructed inside the heat exchange tubes 441. Multiple heat exchange tubes 441 form multiple first heat exchange channels. A second heat exchange channel 3032 can be constructed between adjacent heat exchange tubes 441 and / or between the heat exchange tubes 441 and the inner side of the heat exchange space 302. The first heat exchange channel and the second heat exchange channel 3032 can exchange heat through the tube wall of the heat exchange tubes 441. The heat exchange tubes 441 can be set as microchannel flat tubes, which can further improve the heat exchange efficiency between the first heat exchange channel and the second heat exchange channel 3032.

[0056] Optionally, the first heat exchange channel extends in the vertical direction, and the second heat exchange channel 3032 extends in the vertical direction. The first heat exchange channel and the second heat exchange channel 3032 are arranged side by side along the width direction of the heat exchanger 7.

[0057] Furthermore, the water tank assembly 100 also includes a first partition assembly 3081 and a second partition assembly 3082, which are respectively located at both ends of the heat exchange zone. The two ends of a plurality of heat exchange tubes 441 pass through the first partition assembly 3081 and the second partition assembly 3082, respectively. The first partition assembly 3081 and the second partition assembly 3082 can be used to separate the heat exchange zone, the first diversion channel 3071, and the first confluence channel 3073, so that the fluid can perform stable and effective heat exchange in the heat exchange zone, improving the efficiency and effect of heat exchange, and avoiding the mixing of fluids exchanging heat with each other.

[0058] Optionally, the first diversion channel 3071 is located below the heat exchange zone, and the first confluence channel 3073 is located above the heat exchange zone. The first type of fluid (water in the water tank) can be introduced into the heat exchange space 302 through the first diversion channel 3071, and enter the heat exchange zone along the heat exchange pipe 441 for heat exchange. After heat exchange, it is discharged from the heat exchange space 302 through the first confluence channel 3073 and enters the water storage space 301. This simplifies the structure of the water tank assembly 100 and improves the heat exchange effect on the fluid in the water storage space 301.

[0059] The heat exchange space 302 is provided with a first inlet 3091 and a first outlet 3093. The first inlet 3091 is connected to the first diversion channel 3071, and the first outlet 3093 is connected to the first confluence channel 3073. The first inlet 3091 is located on the lower side wall of the heat exchange space 302, and the first outlet 3093 is located on the upper side wall of the heat exchange space 302. This allows for convenient flow of fluid into and out of the heat exchange space 302.

[0060] The heat exchange space 302 is also provided with a second inlet 3092 and a second outlet 3094, which are connected to the heat exchange zone. The second inlet 3092 is located on the lower side wall of the heat exchange space 302, and the second outlet 3094 is located on the upper side wall of the heat exchange space 302. The second inlet 3092 can be located in the middle area of ​​the lower side wall of the heat exchange space 302, and the second outlet 3094 can be located in the middle area of ​​the upper side wall of the heat exchange space 302. The first inlet 3091 and the second inlet 3092 can be distributed along the width direction of the heat exchange space 302, and the second inlet 3092 and the second outlet 3094 can also be distributed along the width direction of the heat exchange space 302.

[0061] A second diversion channel 3072 and a second confluence channel 3074 can be respectively provided at both ends of the heat exchange zone. A second type of fluid can enter the second diversion channel 3072 and then flow into the second heat exchange channel 3032, thereby ensuring that the second type of fluid can be stably and relatively uniformly introduced into the second heat exchange channel 3032. Optionally, the first heat exchange channel and the second heat exchange channel 3032 are staggered along the width direction of the heat exchange space 302. The first diversion channel 3071 and the second diversion channel 3072 extend along the width direction and are distributed along the length direction of the heat exchange space 302. The first confluence channel 3073 and the second confluence channel 3074 extend along the width direction and are distributed along the length direction of the heat exchange space 302. This simplifies the structure within the heat exchange space 302 and improves the stability and structural strength of the water tank 3. The first dividing component 3081 can be disposed between the first diversion channel 3071 and the second diversion channel 3072, and the second dividing component 3082 can be disposed between the first confluence channel 3073 and the second confluence channel 3074.

[0062] Water can enter the first diversion channel 3071 through the first inlet 3091 and the second diversion channel 3072 through the second inlet 3092. The fluid collected in the first confluence channel 3073 can be discharged through the first outlet 3093, and the fluid collected in the second confluence channel 3074 can be discharged through the second outlet 3094. In conjunction with the above, the first inlet 3091, the second inlet 3092, the first outlet 3093, and the second outlet 3094 can be located on the separator 306, for example, by placing the first inlet 3091, the second inlet 3092, the first outlet 3093, and the second outlet 3094 on the aforementioned first annular rib 3061 and the second annular rib 3062.

[0063] In addition, the heat exchange zone is provided with a first protrusion 3076, which is located between the second diversion channel 3072 and the second confluence channel 3074. The first protrusion 3076 protrudes from the inner bottom surface of the second diversion channel 3072 and the inner bottom surface of the second confluence channel 3074. The heat exchange zone is also provided with a second protrusion 3077, which can be located on the first protrusion 3076 and protrude relative to the first protrusion 3076. The second protrusion 3077 can be configured to extend along the length direction of the heat exchange space 302, and heat exchange sub-regions are respectively constructed on both sides of the second protrusion 3077 along the width direction of the heat exchange space 302. The heat exchange unit 44 can include a first sub-unit and a second sub-unit, which are respectively located in the heat exchange sub-regions.

[0064] As shown in Figure 1, the water tank 3 is also provided with multiple flow paths and multiple water interface points. At least a portion of the multiple water interface points are connected to the multiple flow paths respectively. The multiple flow paths include heat exchange flow paths connected to the first heat exchange channel or the second heat exchange channel 3032. The water in the water tank 3 can exchange heat with the fluid in the second heat exchange channel 3032 when passing through the first heat exchange channel. The fluid in the second heat exchange channel 3032 can be wastewater with residual heat from the washing process, or other types of hot water. The heat exchange space 302 can be used to regulate the water temperature in the water tank 3. When the water in the water tank 3 needs to be used for washing, the preheated water improves the dishwasher's efficiency. Additionally, the second heat exchange channel 3032 can be connected to a water cup to utilize the residual heat from the washing process to heat the water in the water tank 3, further improving the dishwasher's energy efficiency.

[0065] The water tank 3 is equipped with a heat exchange space 302, which can realize heat exchange of the water stored in the water tank 3. By placing the heat exchange space 302 in the water tank 3, the integration of the dishwasher can be improved, making the dishwasher easier to assemble and maintain. In addition, by placing the heat exchange space 302 in the water tank 3, the piping of the water tank assembly 100 can be shortened, the heat exchange efficiency can be improved, and the leakage points can be reduced.

[0066] As shown in Figures 1 and 4, in some embodiments, the heat exchange flow path includes a first flow path 311, and multiple water interfaces including a first interface 321 and a second interface 322. One end of the first heat exchange channel is connected to the water storage space 301, and one end of the first flow path 311 is connected to the other end of the first heat exchange channel. In conjunction with the above, one end of the first heat exchange channel is connected to the water storage space 301 through a first outlet 3093, and the other end of the first heat exchange channel is connected to the first flow path 311 through a first inlet 3091. The other end of the first flow path 311 is connected to the first interface 321, and the second interface 322 is connected to the water storage space 301. During use, the water in the water tank 3 can be connected to the first heat exchange channel of the heat exchange space 302 through the first flow path 311, so as to utilize the heat exchange space 302 to achieve heat exchange of the water in the water tank 3. The dishwasher may also include a water pump, which can be connected to the first interface 321 and the second interface 322, thus connecting the water tank 3, the first flow path 311, the first heat exchange channel, and the water pump into a circulation loop.

[0067] The first heat exchange channel can be configured to extend vertically, with its upper end connected to the water storage space 301, the upper end of the first flow path 311 connected to the lower end of the first heat exchange channel, and the lower end of the first flow path 311 connected to the first interface 321. Additionally, the second interface 322 can be connected to the lower end of the water storage space 301. This simplifies the flow path and optimizes heat exchange efficiency and effectiveness.

[0068] As shown in Figures 1 and 4, in some embodiments, the heat exchange flow path further includes a third flow path 313 and a fourth flow path 314, and multiple water interfaces include a third interface 323 and a fourth interface 324. One end of the third flow path 313 is connected to one end of the second heat exchange channel 3032 and the other end is connected to the third interface 323. One end of the fourth flow path 314 is connected to the other end of the second heat exchange channel 3032 and the other end is connected to the fourth interface 324. In conjunction with the foregoing, one end of the second heat exchange channel 3032 is connected to the third flow path 313 through the second inlet 3092, and the other end of the first heat exchange channel is connected to the fourth interface 324 through the second outlet 3094. The third interface 323 and the fourth interface 324 can connect a water cup and a circulation pump to form a loop. For example, the outlet of the water cup is connected to the inlet of the circulation pump, the outlet of the circulation pump is connected to one of the third interface 323 and the fourth interface 324, and the other of the third interface 323 and the fourth interface 324 is connected to the inlet of the water cup, thus forming a fluid passage to utilize the water with residual heat in the water cup to heat the water in the water tank 3, thereby realizing the recovery of waste heat from the washing water. Optionally, the lower end of the second heat exchange channel 3032 is connected to the third flow path 313, and the upper end of the second heat exchange channel 3032 is connected to the fourth flow path 314. Optionally, the second heat exchange channel 3032 extends in the vertical direction.

[0069] Furthermore, the multiple flow paths also include a fifth flow path 315 and a sixth flow path 316. The lower end of the fifth flow path 315 is connected to the second heat exchange channel 3032, and the upper end of the fifth flow path 315 extends to the upper part of the water tank 3 and connects to the external space of the water tank 3. The upper end of the sixth flow path 316 is connected to the upper end of the fifth flow path 315, and the lower end is connected to the fourth flow path 314. Through the fifth flow path 315 and the sixth flow path 316, the air pressure balance inside and outside the fourth flow path 314 can be achieved, so as to facilitate the flow of fluid through the fourth flow path 314 and the passage in which the fourth flow path 314 is located. In addition, after the heat exchange is completed, the fluid in the fourth flow path 314 can be easily drained.

[0070] In some embodiments, the heat exchange flow path includes a first flow path 311, a third flow path 313, and a fourth flow path 314, and multiple water interface interfaces include a first interface 321, a second interface 322, a third interface 323, and a fourth interface 324. The first interface 321, the second interface 322, the third interface 323, and the fourth interface 324 are arranged side-by-side at the lower end of the water tank. The first flow path 311, the third flow path 313, and the fourth flow path 314 extend vertically, with the first flow path 311 located between the third flow path 313 and the fourth flow path 314. This can improve the heat exchange efficiency of the fluid flowing into the first heat exchange channel and the second heat exchange channel 3032, as well as improve heat recovery performance. Furthermore, before flowing into the first heat exchange channel, the fluid in the water tank can exchange heat with the first flow path 311 and the third flow path 313 and the fourth flow path 314 to further improve heat recovery performance.

[0071] In some embodiments, multiple water inlets are arranged along the width of the water tank at its lower end, facilitating connection of the water inlets to other components such as a water softener and simplifying dishwasher assembly. The heat exchange flow path includes multiple paths arranged side-by-side along the width of the water tank; and / or, the heat exchange flow path extends vertically, with its upper end connected to a first heat exchange channel or a second heat exchange channel 3032, and its lower end connected to the corresponding water inlet. This optimizes the water path layout, improves heat exchange efficiency, reduces energy consumption, and optimizes the flow channel arrangement of the water tank assembly 100.

[0072] As shown in Figures 1 and 4, in some embodiments, the multiple flow paths also include a water inlet flow path 12, and multiple water interface elements include a fifth interface 325 and a sixth interface 326. The two ends of the water inlet flow path 12 are respectively connected to the fifth interface 325 and the sixth interface 326. By integrating the water inlet flow path 12 into the water tank 3, the structure of the dishwasher can be simplified, facilitating the production and assembly of the dishwasher.

[0073] Additionally, the water tank assembly 100 may also include a one-way valve 11, which is located in the water inlet flow path 12 and configured to allow unidirectional flow from the fifth port 325 to the sixth port 326, thereby preventing siphoning in the water inlet flow path 12. Furthermore, the water tank assembly 100 may also include a flow meter 14, which can be connected in series with the water inlet flow path 12. Through the cooperation of the flow meter 14 and the inlet valve, a quantitative water supply can be achieved.

[0074] Optionally, the water inlet flow path 12 and the heat exchange flow path are respectively located on the left and right sides of the water storage space 301, which can optimize the distribution of the flow path in the water tank 3 and improve the stability of the dishwasher. In addition, the heat exchange space 302 and the heat exchange flow path can be located on the same side of the water storage space 301 in the left and right direction.

[0075] At least a portion of the water inlet flow path 12 is inclined towards the heat exchange flow path in a downward direction; and / or, at least a portion of the heat exchange flow path is inclined towards the water inlet flow path 12 in a downward direction. This allows multiple water inlets to be conveniently concentrated at the middle position of the lower end of the water tank 3, facilitating the connection between the water tank 3 and other structures via water inlets, thus simplifying the structure of the dishwasher.

[0076] For example, the dishwasher of this application may also include a water softener 20, which may include multiple water tank interfaces, and the multiple water tank interfaces are respectively connected to multiple water circuit interfaces. In this case, by bringing the lower ends of the heat exchange flow path and the water inlet flow path 12 closer to each other, the size of the multiple water circuit interfaces in the left and right directions can be reduced, so as to facilitate the connection between the water tank 3 and the water softener 20 and facilitate the assembly of the dishwasher.

[0077] As shown in Figures 1 and 4, in some embodiments, the multiple flow paths also include a water replenishment flow path 8, which is used to replenish water into the water tank 3. The multiple water interface also includes a seventh interface 327. One end of the water replenishment flow path 8 is located at the upper end of the water storage space 301 and connects to the water storage space 301. The other end of the water replenishment flow path 8 connects to the seventh interface 327. The water replenishment flow path 8 is located on the side of the water storage space 301 near the inlet flow path 12. This allows for convenient water supply to the water replenishment flow path 8 through the seventh interface 327, facilitating water replenishment to the water tank 3.

[0078] Optionally, the multiple water interfaces also include an eighth interface 328, which connects to the lower end of the water storage space 301. The water tank assembly 100 also includes a first switch valve for opening and closing the eighth interface. The eighth interface 328 can serve as the outlet of the water tank 3, facilitating the discharge of water from the water tank 3. For example, by opening the first switch valve, water from the water tank 3 can be discharged into the water cup 36 through the fourth interface 324 for use in a dishwasher.

[0079] In some embodiments, multiple water inlets are located at the lower end of the water tank 3 and arranged side-by-side in the left-right direction. This simplifies the structure of the water tank 3 and facilitates its connection with other structures. For example, multiple water inlets can be connected to the water softener 20, which can have multiple water tank inlets. This allows the multiple water inlets and water tank inlets to be connected correspondingly, achieving a stable connection between the water tank 3 and the water softener 20, simplifying the flow path distribution, and improving the stability of the dishwasher.

[0080] As shown in Figures 1 and 4, the dishwasher according to an embodiment of this application includes: a water cup 36; the aforementioned water tank assembly 100; and a second heat exchange channel 3032 connected to the water cup 36. Specifically, the washing water containing residual heat in the water cup 36 can be introduced into the second heat exchange channel 3032, while the first heat exchange channel is connected to the water storage space 301. This allows the washing water containing residual heat to heat the water in the water tank 3, achieving waste heat recovery and energy conservation and environmental protection.

[0081] In some embodiments, the dishwasher also includes a water softener 20, which is connected to the water tank assembly 100. Multiple flow paths include an inlet flow path 12, whose inlet is connected to a water source and whose outlet is connected to the water softener 20. The water softener 20 may have an inlet and a resin chamber. The inlet may be connected to a fifth interface 325, and the inlet of the resin chamber may be connected to a sixth interface 326. Additionally, the water softener 20 may have a water cup 36 interface for connecting to the inlet of the water cup 36, thereby allowing softened water to be introduced into the water cup 36.

[0082] Optionally, the water softener 20 has multiple channels and multiple water tank interfaces, with each water tank interface connected to a different channel, and each water tank interface correspondingly connected to a different water circuit interface. This improves the integration of the dishwasher and reduces potential leakage points.

[0083] The water cup 36 is used for temporary water storage and filtering of washing water. During the use of the dishwasher, the water used in the washing process can be stored in the water cup 36 for convenient centralized discharge of washing water and collection of washing residue. It also includes a water tank 3, which has a water storage space 301. The water storage space 301 can be used to store water, facilitating the operation of the dishwasher and thus improving washing efficiency and effectiveness. Additionally, it may include a washing chamber, which has a washing space for placing dishes to be washed. The water cup 36 can be placed at the bottom of the washing chamber and connected to the washing space.

[0084] Additionally, the dishwasher may include a first switching valve 24, one end of which is connected to the outlet of the water tank 3. The first switching valve 24 can be used to control the opening and closing of the outlet of the water tank 3. It also includes a water distribution structure 25, which has a first connection port 21, a second connection port, and a third connection port. The first connection port 21 connects to the other end of the first switching valve 24 and the water inlet path 12; the second connection port connects to the inlet of the water tank 3; and the third connection port connects to the inlet of the water cup 36. The water flow direction can be controlled by the sorting structure.

[0085] In addition, the water tank 3 in this application can be stacked on the side wall, bottom wall or top wall of the washing tank, etc.

[0086] As shown in Figures 1 and 4, in some embodiments, the dishwasher has at least two operating modes. The water distribution structure 25 is configured to selectively connect the first connection port 21 to the second and third connection ports according to the at least two operating modes. Thus, the operating modes of the dishwasher can be switched by adjusting the water distribution structure 25, facilitating the use of the dishwasher.

[0087] Optionally, the dishwasher in this application may include, but is not limited to, the following operating modes.

[0088] In some examples, the dishwasher has a first operating mode in which the first switch valve 24 is closed and the first connection port 21 and the second connection port are connected to replenish water to the water tank 3. In the first operating mode, after the water from the inlet flow path 12 reaches the first connection port 21, the water will flow to the second connection port, thereby replenishing water to the water tank 3. A water level sensor can be installed in the water tank 3 or a flow sensor can be installed in the inlet flow path 12. When the water level in the water tank 3 reaches the preset water level, the inlet flow path 12 will be closed, thus completing the replenishment of water to the water tank 3.

[0089] In some examples, the dishwasher also has a second operating mode. In this mode, the first switch valve 24 is closed, and the first connection port 21 and the third connection port are connected for replenishing water to the water cup 36. In this second operating mode, after the water from the inlet flow path 12 reaches the first connection port 21, the water will flow to the third connection port, thereby supplying water to the water cup 36. A flow sensor can be installed in the inlet flow path 12. When the water level in the water cup 36 reaches a preset level, the inlet flow path 12 will be closed, thus completing the water supply to the water cup 36.

[0090] In some examples, the dishwasher also has a third operating mode. In this mode, the first switch valve 24 is open, and the first connection port 21 and the third connection port are connected to supply water to the water cup 36 through the water tank 3. In the third operating mode, the water inlet path 12 is closed, and the water in the water tank 3 flows out from the outlet, passes through the first switch valve 24, flows to the first connection port 21, and then flows to the water cup 36 through the third connection port, thus supplying water to the water cup 36. When the water level in the water cup 36 reaches the preset water level, the first switch valve 24 can be closed, thereby completing the water supply to the water cup 36.

[0091] In some embodiments, the dishwasher also includes a water softener 20, which is connected between the water inlet path 12 and the first connection port 21 to supply softened water to the first connection port 21. By providing the water softener 20, softened water can be supplied to improve the washing efficiency and effect of the dishwasher. In addition, since the water softener 20 is located before the first connection port 21, it can supply softened water to the water tank 3 and the water cup 36, achieving full soft water washing.

[0092] In some embodiments, the water distribution structure 25 is installed in the water softener 20; and / or, at least a portion of the piping between the water distribution structure 25 and the water tank 3 is integrated into the water softener 20; and / or, at least a portion of the piping between the water distribution structure 25 and the water cup 36 is integrated into the water softener 20. This facilitates the integration of the water softener 20, simplifies the structure of the dishwasher, facilitates dishwasher maintenance, and optimizes the space utilization of the dishwasher.

[0093] In some embodiments, the water inlet path 12 is integrated into the water tank 3, the water tank 3 is connected to the water softener 20, and the water inlet path 12 communicates with the softened water flow channel within the water softener 20; and / or, the water softener 20 is provided with a water source interface, the water inlet path 12 is integrated into the water tank 3, the water tank 3 is connected to the water softener 20, and the water inlet path 12 communicates with the water source interface. The connection between the water tank 3 and the water softener 20 allows the flow path within the water tank 3 to communicate with the flow path within the water softener 20, facilitating component integration and dishwasher assembly, thereby improving the dishwasher's assembly efficiency and stability.

[0094] Optionally, the water tank 3 is provided with at least one water tank interface, and the water softener 20 is provided with at least one water softener 20 interface. The water tank 3 is connected to the water softener 20, and at least one water tank interface and at least one water softener 20 interface are mated. This simplifies the assembly structure of the water softener 20 and the water tank 3, thereby further simplifying the frame of the dishwasher.

[0095] Optionally, the dishwasher also includes a circulation pump 34 and a second switching valve 32. The inlet of the circulation pump 34 is connected to the outlet of the water cup 36, and the second switching valve 32 is connected between the outlet of the circulation pump 34 and the second heat exchange channel 3032, for connecting or disconnecting the second heat exchange channel 3032 from the outlet of the water cup 36. The circulation pump 34 can be used to pump washing water to achieve the washing of dishes in the dishwasher, while the second switching valve 32 can be used to control the direction of water flow. For example, by opening the second switching valve 32, the second heat exchange channel 3032 and the water cup 36 can be connected to achieve water circulation between the second heat exchange channel 3032 and the water cup 36; in addition, by closing the second switching valve 32, the water in the water cup 36 can be sent to the washing tank to achieve the washing of dishes and other items in the washing tank.

[0096] Optionally, the dishwasher in this application may include, but is not limited to, the following operating modes.

[0097] In some examples, the dishwasher also has a fourth operating mode. In this mode, the third connection port is disconnected from the first connection port 21, the circulation pump 34 operates, and the second switch valve 32 opens, allowing water from the water cup 36 to be sent to the second heat exchange channel 3032. In the fourth operating mode, the circulation pump 34 pumps water from the water cup 36 out of the pump 26. Because the second switch valve 32 is open, the water in the water cup 36 is sent to the second heat exchange channel 3032, where it exchanges heat with the water in the first heat exchange channel before being discharged. The water discharged from the second heat exchange channel 3032 is then sent to the inlet of the water cup 36. This achieves the purpose of using the waste heat from the water cup 36 to preheat the water in the hot water tank 3, improving the dishwasher's energy efficiency.

[0098] In some examples, the dishwasher also has a fifth operating mode. In this mode, the third connection port is connected to the first connection port 21, the circulation pump 34 reverses or stops, and the second switch valve 32 opens to flush the second heat exchange channel 3032. In this fifth operating mode, water from the inlet flow path 12 or the water tank 3 can be sent to the third connection port, and after passing through the third connection port, it is sent to the second heat exchange channel 3032. After passing through the second heat exchange channel 3032, it is sent to the water cup 36 through the second switch valve 32, thereby achieving reverse flushing of the second heat exchange channel 3032.

[0099] Optionally, a third switching valve can be installed between the third connection port and the inlet of the water cup 36. The third switching valve can be installed between the second heat exchange channel 3032 and the inlet of the water cup 36, thereby controlling the flow direction of the water delivered from the third connection port. In addition, a fourth switching valve can also be installed between the second heat exchange channel 3032 and the third connection port. The third and fourth switching valves can also be combined to form a reversing valve.

[0100] Optionally, a fifth switching valve can be provided between the circulating pump 34 and the water distribution valve 35. The fifth switching valve and the second switching valve 32 cooperate to control the water flow direction at the outlet of the circulating pump 34. In addition, the second switching valve 32 and the fifth switching valve can be combined to form a reversing valve.

[0101] To meet the needs of large-scale dishwashers, the heat exchange system of this application has a small overall size, simple structure, and does not occupy the space of the original inner tank 40 of the dishwasher. Moreover, the volume of the heat exchange space 302 in this application is much smaller than any heat exchange space 302 in the above-mentioned patent applications, and the heat exchange efficiency is greater than 90%. The auxiliary equipment and connecting pipes used in the heat exchange system of this application are simpler and easier to install.

[0102] Some specific embodiments of this application are described below with reference to the accompanying drawings.

[0103] Figure 4 shows a flow path system for a dishwasher, including at least one of the following: inner tank 40, water cup 36, water tank 3, water softener 20, water distribution structure 25, circulation pump 34, water pump 26, drain pump 2630, water distribution valve 35, inlet valve 19, drain valve, check valve 11, flow meter 14, first switch valve 24, and second switch valve 32.

[0104] The inner tank 40 has a washing space, within which at least one of a lower spray arm 37, a middle spray arm 38, and an upper spray arm 39 is provided. The lower spray arm 37, middle spray arm 38, and upper spray arm 39 are connected to a water distribution valve 35, which is connected to a circulation pump 34. The circulation pump 34 is connected to the outlet of a water cup 36. The water cup 36 is connected to the bottom of the inner tank 40 and communicates with the washing space. The water tank 3 has a water storage space 301 and an interface for connecting to the inner tank 40. The water tank 3 is an integrated device located on the side panel of the dishwasher. The water tank 3 has a water inlet path 12, with a flow meter 14 and a one-way valve 11 connected in series in the water inlet path 12. The one-way valve 11 ensures one-way flow of the water inlet path 12 and prevents siphoning. The heat exchange space 302 is mainly used for heat exchange between the cold water in the water tank 3 and the washing hot water. The water softener 20 is provided with an inlet channel and a soft water channel. The inlet channel is connected to an inlet valve 19 and communicates with the inlet of the inlet flow path 12. The inlet of the soft water channel is connected to the outlet of the inlet channel, and the outlet of the soft water channel is connected to the water distribution structure 25. The water distribution structure 25 has a first connection port 21, a second connection port, and a third connection port. The first connection port 21 is connected to the outlet of the soft water channel, the second connection port is connected to the inlet of the water tank 3, and the third connection port is connected to the water cup 36. A first switch valve 24 is connected between the first connection port 21 and the outlet of the water tank 3. The main function of the one-way valve 11 is to realize the one-way flow function of the water path and the air path, so as to ensure that the water flow can only flow in the direction of water inlet and cannot flow in reverse.

[0105] The water tank of this application integrates a flow path. The water tank is provided with a fourth flow path 314, which is a pipe for hot water to flow inside the water tank 3. The fourth flow path 314 can be connected to the fourth pipe 28 and is used to connect the heat exchange space 302 and the inlet of the water cup 36, so that the water in the heat exchange space 302 can enter the water cup 36 through the fourth flow path 314, the fourth pipe 28, and the inlet of the water cup 36. At this time, the second switch valve 32 and the water pump 26 can be low-voltage electrical appliances (low-voltage solenoid valve and low-voltage water pump 26). When water enters the water cup 36, the water flow will reverse through the fourth flow path 314 into the heat exchange space 302 and then through the first hot water pipe 31, the second switch valve 32, the second hot water pipe 33, and the circulation pump 34 into the water cup 36, completing the backwashing of the heat exchange space 302. The water tank is provided with a second channel 2, which is a venting / overflow connection channel for the water tank 3, used to connect the inner tank connection port and the upper space of the water tank 3. When the water level in the water tank 3 is too high, it can enter the inner tank 40 through the second channel 2 and the inner tank connection port 5. The inner tank 40 is an integral structure with the water tank 3. The water tank 3 is an integrated device that mainly integrates the fourth flow path 314, the second channel 2, the water tank inlet 4, the inner tank connection port 5, the cold water outlet 6, the water replenishment flow path 8, the third flow path 313, the first flow path 311, the one-way valve 11, the water inlet flow path 12, the drainage anti-siphon structure 13, the flow meter 14, and other structures. It is located on the side panel of the dishwasher. The water tank inlet 4 is the highest point of water inlet in the water tank 3 and is also the water inlet of the water tank 3. The inner tank connection port 5 is an integral structure with the water tank 3 and is mainly used to realize the interconnection between the water tank 3 and the inner tank 40. The cold water outlet 6 is the connection port between the water tank 3 and the heat exchange space 302 and is mainly used for the cold water in the heat exchange space 302 to enter the water tank 3.

[0106] The water supply path 8 is an inlet connection pipe integrated into the water tank 3, used to connect the water tank inlet 4 and the water distribution structure 25; the third flow path 313 is a hot water connection pipe integrated into the water tank 3, used to connect the heat exchange space 302 and the first hot water pipe 31; the first flow path 311 is integrated into the water tank 3, used to connect the heat exchange space 302 and the second cold water pipe 27; the one-way valve 11 mainly functions to realize the one-way conduction function of the water path and the air path, so as to ensure that the water flow can only enter the water softener 20 from the inlet flow path 12 and the first pipe 15, and cannot enter the inlet flow path 12 from the water softener 20 through the first pipe 15; the inlet flow path 12 is the connection pipe between the one-way valve 11 and the flow meter 14, integrated The water tank 3 is integrated with the anti-siphon drainage structure 13, which is a drainage and anti-siphon drainage structure. Its upper pipe extends to the top of the water tank 3 and connects with the anti-siphon device 43. It has internal pipes that connect with the drainage pipe 17 to achieve drainage. The flow meter 14 is mainly used to calculate the inlet water flow rate and can work with the inlet valve 19 to control the water intake of the dishwasher. It is integrated with the water tank 3. The first pipe 15 is a connecting pipe, mainly used to connect the inlet water flow path 12 and the water softener 20, and the flow meter 14 and the water softener 20. The second pipe 16 connects the water distribution structure 25 and the water replenishment flow path 8 to realize the water intake function of the water tank 3. The drainage pipe 17 is mainly used to drain the water cup 36 into the domestic sewage pipe. Pipe 18 is mainly used to connect the tap water inlet to the dishwasher; the inlet valve 19 is mainly used to control the opening and closing of the inlet pipe 18, and it is located on the inlet pipe 18, or it can be integrated into the water softener 20; the water softener 20 is mainly used to soften the tap water entering the dishwasher, and it is also an integrated device, mainly integrating components such as the inlet valve 19, the water distribution structure 25, and the water pump 26; the first connection port 21 is the inlet of the water distribution structure 25, and is mainly used to connect the water softener 20 and the water distribution structure 25; the first cold water pipe 22 is used to connect the water tank 3 and the water pump 26; the third pipe 23 is used to connect the water tank 3, the first switch valve 24, the water softener 20, and the first connection port 21; the first switch valve 24 is used to control The opening and closing of the third pipe 23 controls the water discharge from the water tank 3. When the water tank 3 discharges water, the first switch valve 24 opens, and the first connection port 21 in the water distribution structure 25 connects to the fourth pipe 28. Water flows from the water tank 3 through the first switch valve 24, the third pipe 23, the first connection port 21, the fourth pipe 28, and the inlet of the water cup 36 into the water cup 36. The water distribution structure 25 is mainly used to switch between the second water pipe 16 and the fourth pipe 28. When the water tank 3 needs to be filled with water, it can connect the first connection port 21 to the second pipe 16. When the water cup 36 needs to be filled with water, it can connect the first connection port 21 to the fourth pipe 28. It can be integrated into the water softener 20 or arranged separately.Water pump 26 is used to transport water from water tank 3 to heat exchange space 302 through first cold water pipe 22, second cold water pipe 27, and first flow path 311, and return to water tank 3 through cold water outlet 6, forming a cold water circulation. It can be integrated into water softener 20 to form a single structure, or it can be arranged independently. Second cold water pipe 27 connects water pump 26 and first flow path 311. Fourth pipe 28 connects second pipe 16 and inlet valve 19, and also connects third pipe 23 and inlet of water cup 36, allowing water to enter water cup 36. Inlet of water cup 36 connects to water cup 36 and serves as its inlet interface. Drain pump 30 transports water from water cup 36 to domestic sewage pipe through drainage anti-siphon structure 13 and drainage pipe 17. Drain pump 30 can also be used to directly transport water from water cup 36 to domestic sewage pipe.

[0107] The first hot water pipe 31 connects the second switch valve 32 and the third flow path 313 to deliver hot water. The second switch valve 32 controls the connection between the second switch valve 32 and the second hot water pipe 33. The second hot water pipe 33 connects the circulation pump 34 and the second switch valve 32. When the water distribution valve 35 is closed, opening the second switch valve 32 allows water to flow from the water cup 36, be pressurized by the circulation pump 34, and then flow through the second hot water pipe 33, the second switch valve 32, the first hot water pipe 31, the third flow path 313, the heat exchange space 302, and the fourth flow path 313. Water flows into water cup 36 through pipe 314 and fourth pipe 28, thus forming a hot water circulation; circulation pump 34 is used to transport and heat the fluid; water distribution valve 35 is used to switch water paths, which can control the water flow to enter the lower spray arm 37 / middle spray arm 38 / upper spray arm 39 separately, or can be completely closed; water cup 36 is mainly used to store / collect water in inner tank 40; lower spray arm 37 is used to achieve spray washing of lower spray arm 37; middle spray arm 38 is used to achieve spray washing of middle spray arm 38; upper spray arm 39 is used to achieve spray washing of upper spray arm 39; inner tank 40 is used for The structure forms the frame, enclosure, and support of the dishwasher; the fifth pipe 41 connects the second channel 2 and the anti-siphon device 43, and is connected to the sixth pipe 42 through the anti-siphon device 43, ultimately connecting the water tank 3, the inner tank connection port 5, and the fifth pipe 41 to the outside space, allowing gas in the inner tank 40 to enter the atmosphere through the inner tank connection port 5, the second channel 2, the fifth pipe 41, the anti-siphon device 43, and the sixth pipe 42. Furthermore, the position where the fifth pipe 41 connects to the anti-siphon device 43 is higher than the position where the fifth pipe 41 connects to the sixth pipe 42. The second channel 2 is connected at the following position; the sixth pipe 42 is used to connect the anti-siphon device 43 to the external space, and the position where the sixth pipe 42 connects to the anti-siphon device 43 is higher than the position where the anti-siphon device 43 connects to the drainage anti-siphon structure 13; the anti-siphon device 43 is used to connect the sixth pipe 42, the fifth pipe 41, and the drainage anti-siphon structure 13. The structure of the anti-siphon device 43 is equipped with a one-way valve device, which can ensure that the fluid in the drainage anti-siphon structure 13 will not enter the fifth pipe 41 and the sixth pipe 42 through the anti-siphon device 43.

[0108] As shown in Figure 4, the second channel 2 is connected to the inner tank connection port 5, the second channel 2 is connected to the fifth pipe 41, and the second channel 2 is connected to the water tank 3; the water tank 3 and the inner tank 40 are fixedly connected by screws, clips, screws, and the inner tank connection port 5, so that the inner tank connection port 5 and the inner tank 40 are interconnected, the water tank 3 is connected to the water tank inlet 4, the water tank 3 is connected to the cold water outlet 6, the water tank 3 is connected to the first cold water pipe 22, and the water tank 3 is connected to the third pipe 23; the shell of the heat exchange device and the water tank 3 are integrated into one structure through an integral molding process, and the whole is arranged vertically, with the outer side flush with the outer side of the water tank 3, and its upper and lower position is between the inner tank connection port 5 and the bottom of the water tank 3, and it is arranged on the right side of the water tank 3; the water tank inlet 4 is not connected to the fifth pipe 41, and the water tank inlet 4 is located above the fifth pipe 41; the third pipe 23 is connected to the first connection port 21; the water distribution structure 25 is arranged by screws. A water softener 20; a first switch valve 24 is arranged in the water tank 3 via a screw-on mechanism; a water pump 26 is arranged in the water softener 20 via a screw-on / screw mechanism; a fourth pipe 28 is arranged in the water cup 36 via a screw-on mechanism; a second switch valve 32 is arranged independently, or it can be arranged in the water softener 20 via a screw-on mechanism; the second pipe 16 and the third pipe 23 are not connected; the inlet pipe 18 and the drain pipe 17 are not connected; the drain pipe 17 is not connected to the first hot water pipe 31; the first hot water pipe 31 is not connected to the fourth pipe 28 and the second cold water pipe 27; a fifth pipe 41 is arranged in the water tank 3, which does not block the integrity of the water tank 3, and the fluid in the water tank 3 in the area above and below the fifth pipe 41 can still be connected; the sixth pipe 42, the anti-siphon device 43, and the drainage anti-siphon structure 13 form a structure that divides the water tank 3 into two parts, which are not connected; the anti-siphon device 43 is arranged on the water tank 3.

[0109] Its working process under ECO sequence is as follows: Process 1: Before the washing process starts, open the water inlet valve 19 and switch the water distribution structure 25 to connect the water softener 20 with the water distribution structure 25. Tap water enters the water softener 20 through the water inlet pipe 18, water inlet valve 19, flow meter 14, water inlet flow path 12, one-way valve 11, and first pipe 15 for softening treatment. Then, it enters the water tank 3 through the first connection port 21, water distribution structure 25, second pipe 16, water replenishment flow path 8, and water tank inlet 4. When the water volume reaches the set value (water volume range 2.9L-3.9L), close the water inlet valve 19, and the water tank 3 is filled with water. Process Two: When the main wash begins, water tank 3 is filled with water, the first switch valve 24 is opened, and the first connection port 21 in the water distribution structure 25 is connected to the fourth pipe 28. Water flows from water tank 3 through the first switch valve 24, the third pipe 23, the first connection port 21, the fourth pipe 28, and the inlet of water cup 36 into water cup 36. Water enters water cup 36 before the wash is complete, and then the first switch valve 24 is closed. 3-10 minutes before the main wash ends, the inlet valve 19 is opened, and the water distribution structure 25 is switched to allow the soft water to flow. The water heater 20 is connected to the water distribution structure 25 to replenish the water tank 3. When the preset water volume is reached, the inlet valve 19 is closed. The second switch valve 32 and the water pump 26 are opened, and the water distribution valve 35 is adjusted to the closed state, allowing the water from the washing pump to flow through the water cup 36, the second hot water pipe 33, the second switch valve 32, the first hot water pipe 31, and the third flow path 313 into the heat exchange space 302. Afterward, it returns to the water cup 36 through the fourth flow path 314 and the fourth pipe 28 to complete the washing hot water circulation. When the water pump 26 is turned on, the water from the water tank 3 will be transported to the heat exchange space 302 through the first cold water pipe 22, the water pump 26, the second cold water pipe 27, and the first flow path 311, and then return to the water tank 3 through the cold water outlet 6 to complete the cold water circulation of the water tank 3.The cold water circulation and hot water circulation exchange heat in the heat exchange space 302, transferring heat from the hot water circulation to the cold water circulation, and finally storing the heat in the water tank 3, thus completing the main wash sequence; Process 3: When the rinsing begins, the inlet valve 19 is opened, and the water distribution structure 25 is switched to connect the water softener 20 and the fourth pipe 28. Tap water passes through the inlet pipe 18, inlet valve 19, flow meter 14, inlet flow path 12, one-way valve 11, and first pipe 15 before entering the water softener 20 for softening treatment. After softening, it enters the water cup 36 through the first connection port 21, water distribution structure 25, fourth pipe 28, and the inlet of the water cup 36. After the water intake is complete, the power to the inlet valve 19 and the water distribution structure 25 is turned off, and the rinsing begins. Process 4: When the second rinse begins, the first switch valve 24 opens, and the water tank 3 begins to release water. The water flows through the third pipe 23, the first switch valve 24, the fourth pipe 28, and the inlet of the water cup 36 into the water cup 36. Water is introduced into the water cup 36 before the wash is completed. Then the first switch valve 24 is closed, and the second rinse begins until the wash is finished. When the drying begins, process 1 is repeated. Through the above process, some of the heat from the dishwasher during the washing process is transferred to the rinsing stage, thus reusing the dishwasher's heat. At the same time, the water tank 3 absorbs heat from the environment during the water storage stage at the beginning of the drying process, raising its internal water temperature to the ambient temperature. Therefore, it can reduce some of the heat energy consumed in the subsequent heating process, thus achieving energy saving.

[0110] During the operation of the dishwasher, when it drains water, the water flow is driven by the drain pump 30 and enters the sewage pipe through the drain anti-siphon structure 13 and the drain pipe 17. At this time, the one-way connection between the sixth pipe 42 and the anti-siphon device 43 can ensure the normal operation of the above process. When the water in the drain pipe 17 flows backward into the anti-siphon structure 13, the sixth pipe 42 comes into play, preventing the water in the drain pipe 17 from flowing backward into the anti-siphon structure 13. When the dishwasher is washing at high temperature, the inner tub 40 is connected to the outside space through the inner tub connection port 5, the second channel 2, the fifth pipe 41, the anti-siphon device 43, and the sixth pipe 42, which allows the pressure generated in the inner tub 40 due to high temperature to be released. Otherwise, the inner door of the dishwasher would be pushed open during high-temperature washing. In addition, the position where the fifth pipe 41 connects to the anti-siphon device 43 is higher than the position where the fifth pipe 41 connects to the second channel 2, which ensures that when there is too much water in the water tank 3, it can enter the inner tub 40 through the second channel 2 and the inner tub connection port 5, instead of entering the anti-siphon device 43 through the second channel 2 and the fifth pipe 41.

[0111] By testing a dishwasher with the above-mentioned heat exchange system and a conventional waste heat recovery dishwasher under the same operating conditions, it can be found that the heat exchange system of this application requires a shorter time to achieve the same temperature rise when the flow rate of the water pump 26 is increased.

[0112] This application discloses a heat exchange system for dishwasher energy saving, which has a more compact overall structure, a higher degree of integration, requires fewer connecting pipes, and reduces the tooling time. Furthermore, the heat exchange space 302 used in this dishwasher heat exchange system is extremely small, only 1 / 6 the size of a conventional heat exchange space 302, allowing for easier and more flexible placement within the dishwasher's water tank 3 or base.

[0113] The present application discloses a heat exchange system for energy saving in dishwashers, which can prevent backflow in the dishwasher drain pipe 17 and ensure that the dishwasher door will not open due to excessive pressure during high-temperature washing.

[0114] In this application, a similar heat exchange system design can be achieved by using a higher flow rate or a heat exchanger with a larger equivalent diameter. A similar heat exchange system design can also be achieved by using other processing methods to create the same type of microscale heat exchange structure. Using larger or more water tanks 3 may also achieve similar energy-saving effects.

[0115] In related technologies, the water storage tank and heat exchange system are connected through assembly, which presents assembly difficulties and a significant risk of leakage at the assembly point. Furthermore, due to the air gap between the water storage tank and the heat exchange components, heat loss occurs through the air during heat exchange, limiting the potential for further improvement in heat exchange efficiency. In this application, the heat exchange components and piping are integrated into the water storage tank, avoiding the leakage risks associated with assembly. Additionally, after integration, the entire component and piping exchange heat with the water in the storage tank through the sidewalls, absorbing any heat loss during the process and improving both heat exchange time and efficiency.

[0116] Specifically, tap water, after passing through the inlet valve, flows through the flow meter and check valve to the resin chamber of the water softener. The softened water then enters the storage space 301. The end of the water supply path is located at the top of the water tank, forming a check loop and releasing end pressure to prevent increased back pressure and slowed flow rate when the storage space 301 is full. The heat exchange unit 44 and its flow channels are integrated into the water tank. Hot water enters the heat exchange space 302 through the third flow path and returns to the water cup through the fourth flow path. The fourth flow path connects to the top of the water tank, forming a check loop to prevent leakage from the heat exchange space 302, thus preventing water from leaking directly back into the inner tank. Because the heat exchange components are directly integrated into the water tank, in addition to heat exchange within the components, heat exchange also occurs at the external location close to the water tank, accelerating the overall heat exchange process.

[0117] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0118] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0119] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0120] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0121] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0122] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A water tank assembly for a dishwasher, the water tank assembly comprising: A water tank, which has a water storage space and a heat exchange space; A heat exchange unit is provided in the heat exchange space, and the heat exchange space is divided into a first heat exchange channel and a second heat exchange channel that are spaced apart. The first heat exchange channel is connected to the water storage space, and the second heat exchange channel is in heat exchange cooperation with the first heat exchange channel.

2. The water tank assembly according to claim 1, wherein, The water tank includes a main body and a partition. The partition is connected to the main body and separates the water storage space and the heat exchange space within the main body.

3. The water tank assembly according to claim 2, wherein, The main body includes a bottom shell and a cover plate, which are distributed opposite to each other. A separator is disposed between the bottom shell and the cover plate. The separator includes a first annular rib, the inner side of which forms the heat exchange space, and the water storage space is disposed on the outer side of the first annular rib.

4. The water tank assembly according to claim 3, wherein, The separator further includes a second annular rib, which surrounds the first annular rib and is spaced apart from the first annular rib. The separator also includes a plurality of connecting ribs, which are disposed between the first annular rib and the second annular rib and connected to the first annular rib and the second annular rib, and the plurality of connecting ribs are distributed around the first annular rib.

5. The water tank assembly according to claim 3 or 4, wherein, The partition is integrally formed with the bottom shell; and / or the cover plate is welded, bonded or heat-fused to the partition.

6. The water tank assembly according to any one of claims 1-5, wherein, The heat exchange space includes a first diversion channel, a first confluence channel, and a heat exchange zone. The heat exchange zone is located between the first diversion channel and the first confluence channel. The heat exchange unit is located in the heat exchange zone. The first diversion channel and the first confluence channel are connected to the first heat exchange channel.

7. The water tank assembly according to claim 6, wherein, The heat exchange unit includes multiple heat exchange tubes, which are disposed in the heat exchange space. A first heat exchange channel is constructed inside the heat exchange tubes, connecting the first diversion channel and the first confluence channel. A second heat exchange channel is constructed outside the heat exchange tubes to cooperate with the first heat exchange channel in heat exchange.

8. The water tank assembly according to claim 7, wherein, The water tank assembly further includes a first partition component and a second partition component, which are respectively located at both ends of the heat exchange zone, and the two ends of the plurality of heat exchange tubes are respectively inserted through the first partition component and the second partition component.

9. The water tank assembly according to any one of claims 6-8, wherein, The first diversion channel is located below the heat exchange zone, and the first confluence channel is located above the heat exchange zone; And / or, the heat exchange space is provided with a first water inlet and a first water outlet, the first water inlet is connected to the first diversion channel, the first water outlet is connected to the first confluence channel, the first water inlet is located on the lower side wall of the heat exchange space, and the first water outlet is located on the upper side wall of the heat exchange space. And / or, the heat exchange space is further provided with a second water inlet and a second water outlet, the second water inlet and the second water outlet are connected to the heat exchange zone, the second water inlet is provided on the lower side wall of the heat exchange space, and the second water outlet is provided on the upper side wall of the heat exchange space.

10. The water tank assembly according to any one of claims 1-9, wherein, The water tank is also provided with multiple flow paths and multiple water interface, at least a portion of the multiple water interface is connected to the multiple flow paths respectively, and the multiple flow paths include heat exchange flow paths connected to the first heat exchange channel or the second heat exchange channel.

11. The water tank assembly according to claim 10, wherein, The heat exchange flow path includes a first flow path, and the plurality of water interface includes a first interface and a second interface. One end of the first heat exchange channel is connected to the water storage space, one end of the first flow path is connected to the other end of the first heat exchange channel, the other end of the first flow path is connected to the first interface, and the second interface is connected to the water storage space.

12. The water tank assembly according to claim 11, wherein, The first heat exchange channel extends in the vertical direction, the upper end of the first heat exchange channel is connected to the water storage space, the upper end of the first flow path is connected to the lower end of the first heat exchange channel, and the lower end of the first heat exchange channel is connected to the first interface. The second interface is connected to the lower end of the water storage space.

13. The water tank assembly according to any one of claims 10-12, wherein, The heat exchange flow path further includes a third flow path and a fourth flow path, and the plurality of water interface includes a third interface and a fourth interface. One end of the third flow path is connected to one end of the second heat exchange channel and the other end is connected to the third interface. One end of the fourth flow path is connected to the other end of the second heat exchange channel and the other end is connected to the fourth interface.

14. The water tank assembly according to claim 13, wherein, The second heat exchange channel extends vertically, with its lower end connected to the third flow path and its upper end connected to the fourth flow path; and / or, the plurality of flow paths further include a fifth flow path and a sixth flow path, with the lower end of the fifth flow path connected to the second heat exchange channel and its upper end extending to the upper part of the water tank and connecting to the external space of the water tank, the upper end of the sixth flow path connected to the upper end of the fifth flow path, and its lower end connected to the fourth flow path.

15. The water tank assembly according to claim 10, wherein, The heat exchange flow path includes a first flow path, a third flow path, and a fourth flow path, and the multiple water interface includes a first interface, a second interface, a third interface, and a fourth interface. The first interface, the second interface, the third interface, and the fourth interface are arranged side by side at the lower end of the water tank; the first flow path, the third flow path, and the fourth flow path extend in the vertical direction, with the first flow path located between the third flow path and the fourth flow path.

16. The water tank assembly according to any one of claims 10-15, wherein, The plurality of water inlets are arranged at the lower end of the water tank along the width direction of the water tank; and / or, the heat exchange flow path includes a plurality of them arranged side by side along the width direction of the water tank; and / or, the heat exchange flow path extends in the vertical direction, and the upper end of the heat exchange flow path is connected to the first heat exchange channel or the second heat exchange channel, and the lower end of the heat exchange flow path is connected to the corresponding water inlet; and / or, the plurality of flow paths also includes a water inlet flow path, the plurality of water inlets include a fifth interface and a sixth interface, and the two ends of the water inlet flow path are respectively connected to the fifth interface and the sixth interface.

17. A dishwasher, comprising: Water cup; The water tank assembly according to any one of claims 1-16, wherein the second heat exchange channel is connected to the water cup.

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