Water tank assembly and dish washing machine

Abstract

The utility model discloses a water tank assembly and a dish-washing machine, the water tank assembly comprises a water tank, a heat exchanger, a water pump and a water pump, the water tank is provided with a water storage space and a heat exchange space; the heat exchange unit is arranged in the heat exchange space, a first heat exchange channel and a second heat exchange channel which are distributed in a spaced mode are divided in the heat exchange space, the first heat exchange channel communicates with the water storage space, and the second heat exchange channel is matched with the first heat exchange channel in a heat exchange mode. According to the water tank assembly, the heat exchange space and the water storage space are arranged in the water tank, heat exchange of water in the water storage space can be achieved through the heat exchange space, and the heat exchange efficiency and the energy efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, and particularly relates to a water tank assembly and a dishwasher. Background Art

[0002] In the related art, dishwashers generally use electric heating to wash dishes with high-temperature hot water, and the wastewater after washing is directly drained, thus wasting a large amount of heat and increasing the energy consumption of the dishwasher. Summary of the Utility Model

[0003] An object of the utility model is to provide a water tank assembly, which has a heat exchange space and a water storage space in the water tank, and the heat exchange space can be used to exchange heat for the water in the water storage space, so as to improve the heat exchange efficiency and energy efficiency.

[0004] Another object of the utility model is to provide a dishwasher, which includes the aforementioned water tank assembly.

[0005] The water tank assembly according to an embodiment of the utility model is used for a dishwasher, and the water tank assembly includes: a water tank, which has a water storage space and a heat exchange space; a heat exchange unit, which is arranged in the heat exchange space and separates a first heat exchange channel and a second heat exchange channel which are distributed at intervals in the heat exchange space, the first heat exchange channel communicates with the water storage space, and the second heat exchange channel exchanges heat with the first heat exchange channel.

[0006] The water tank assembly according to an embodiment of the utility model has a heat exchange space and a water storage space in the water tank, and the heat exchange space can be used to exchange heat for the water in the water storage space, so as to improve the heat exchange efficiency and energy efficiency.

[0007] In addition, the water tank assembly according to the above embodiment of the utility model may further have the following additional technical features:

[0008] In some embodiments, the water tank includes a main body part and a partition member, the partition member is connected to the main body part and separates the water storage space and the heat exchange space in the main body part.

[0009] In some embodiments, the main body part includes a bottom shell and a cover plate, the bottom shell and the cover plate are distributed relatively, the partition member is arranged between the bottom shell and the cover plate, the partition member includes a first annular rib, the inner side of the first annular rib is configured as the heat exchange space, and the water storage space is arranged outside the first annular rib.

[0010] In some embodiments, the partition member further includes a second annular rib, the second annular rib surrounds the first annular rib, and the second annular rib is spaced apart from the first annular rib;

[0011] The separator further includes a plurality of connecting ribs, the plurality of connecting ribs are disposed between the first annular rib and the second annular rib, and are connected to the first annular rib and the second annular rib, and the plurality of connecting ribs are distributed around the first annular rib.

[0012] In some embodiments, the separator is integrally formed with the bottom case; and / or, the cover plate is welded, bonded or heat-melted to the separator.

[0013] In some embodiments, the heat exchange space includes a first flow dividing groove, a first flow collecting groove and a heat exchange area, the heat exchange area is disposed between the first flow dividing groove and the first flow collecting groove, the heat exchange unit is disposed in the heat exchange area, and the first flow dividing groove and the first flow collecting groove communicate with the first heat exchange channel.

[0014] In some embodiments, the heat exchange unit includes a plurality of heat exchange tubes, the plurality of heat exchange tubes are disposed in the heat exchange space, a first heat exchange channel communicating with the first flow dividing groove and the first flow collecting groove is constructed inside the heat exchange tubes, and a second heat exchange channel for heat exchange cooperation with the first heat exchange channel is constructed outside the heat exchange tubes.

[0015] In some embodiments, the water tank assembly further includes a first separating assembly and a second separating assembly, the first separating assembly and the second separating assembly are respectively disposed at two ends of the heat exchange area, and two ends of the plurality of heat exchange tubes respectively penetrate through the first separating assembly and the second separating assembly.

[0016] In some embodiments, the first flow dividing groove is disposed below the heat exchange area, and the first flow collecting groove is disposed above the heat exchange area;

[0017] and / or, the heat exchange space is provided with a first water inlet and a first water outlet, the first water inlet communicates with the first flow dividing groove, the first water outlet communicates with the first flow collecting groove, the first water inlet is disposed on the lower side wall of the heat exchange space, and the first water outlet is disposed on the upper side wall of the heat exchange space;

[0018] 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 communicate with the heat exchange area, the second water inlet is disposed on the lower side wall of the heat exchange space, and the second water outlet is disposed on the upper side wall of the heat exchange space.

[0019] In some embodiments, the water tank is further provided with a plurality of flow paths and a plurality of water path interfaces, at least a part of the plurality of water path interfaces are respectively communicated with the plurality of flow paths, and the plurality of flow paths include heat exchange flow paths communicated with the first heat exchange channel or the second heat exchange channel.

[0020] In some embodiments, the heat exchange flow path includes a first flow path, the plurality of water path interfaces include a first interface and a second interface, one end of the first heat exchange channel communicates with the water storage space, one end of the first flow path communicates with the other end of the first heat exchange channel, the other end of the first flow path communicates with the first interface, and the second interface communicates with the water storage space.

[0021] In some embodiments, the first heat exchange channel extends in the vertical direction, the upper end of the first heat exchange channel communicates with the water storage space, the upper end of the first flow path communicates with the lower end of the first heat exchange channel, and the lower end communicates with the first interface;

[0022] The second interface communicates with the lower end of the water storage space.

[0023] In some embodiments, the heat exchange flow path further includes a third flow path and a fourth flow path, the plurality of water path interfaces include a third interface and a fourth interface, one end of the third flow path communicates with one end of the second heat exchange channel and the other end communicates with the third interface, and one end of the fourth flow path communicates with the other end of the second heat exchange channel and the other end communicates with the fourth interface.

[0024] In some embodiments, the second heat exchange channel extends in the vertical direction, the lower end of the second heat exchange channel communicates with the third flow path, and the upper end of the second heat exchange channel communicates with the fourth flow path; and / or, the plurality of flow paths further include a fifth flow path and a sixth flow path, the lower end of the fifth flow path communicates with the second heat exchange channel, and the upper end extends to the upper part of the water tank and communicates with the external space of the water tank, the upper end of the sixth flow path communicates with the upper end of the fifth flow path, and the lower end communicates with the fourth flow path.

[0025] In some embodiments, the heat exchange flow path includes a first flow path, a third flow path and a fourth flow path, the plurality of water path interfaces include a first interface, a second interface, a third interface and a fourth interface,

[0026] wherein, 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, and the first flow path is arranged between the third flow path and the fourth flow path.

[0027] In some embodiments, the plurality of waterway interfaces are arranged at the lower end of the water tank along the width direction of the water tank; and / or, the heat exchange flow paths include a plurality of heat exchange flow paths arranged side by side along the width direction of the water tank; and / or, the heat exchange flow paths extend in the up and down direction, and the upper end of the heat exchange flow path communicates with the first heat exchange channel or the second heat exchange channel, and the lower end communicates with the corresponding waterway interface; and / or, the plurality of flow paths further include a water inlet flow path, the plurality of waterway interfaces include a fifth interface and a sixth interface, and both ends of the water inlet flow path are respectively connected to the fifth interface and the sixth interface.

[0028] The dishwasher according to an embodiment of the present invention includes: a water cup; the aforementioned water tank assembly, and the second heat exchange channel communicates with the water cup. Description of the Drawings

[0029] Figure 1 It is a schematic diagram of a water tank according to an embodiment of the present invention.

[0030] Figure 2 is Figure 1 A partial enlarged schematic diagram of the area of circle A in

[0031] Figure 3 It is an exploded schematic diagram of a water tank according to an embodiment of the present invention.

[0032] Figure 4 It is a schematic diagram of a flow path system of a dishwasher according to an embodiment of the present invention.

[0033] Reference Signs:

[0034] Water tank assembly 100, water tank 3, water storage space 301, heat exchange space 302, heat exchange unit 44, main body 305, partition member 306, bottom shell 3051, cover plate 3052, first annular rib 3061, second annular rib 3062, connecting rib 3063, first diversion groove 3071, second diversion groove 3072, first confluence groove 3073, second confluence groove 3074, first partition assembly 3081, second partition assembly 3082, first water inlet 3091, second water inlet 3092, first water outlet 3093, second water 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, seventh interface 327, eighth interface 328, second channel 2, water tank water inlet 4, inner tank connection port 5, cold water outlet 6, heat exchange space, make-up water flow path 8, one-way valve 11, water inlet flow path 12, drainage anti-siphon structure 13, flow meter 14, first pipe 15, second pipe 16, drainage pipe 17, water inlet pipe 18, water inlet valve 19, water softener 20, first connection port 21, first cold water pipe 22, third pipe 23, first on-off valve 24, water distribution structure 25, water pump 26, second cold water pipe 27, fourth pipe 28, inlet of water cup 29, drainage pump 30, first hot water pipe 31, second on-off valve 32, second hot water pipe 33, circulation pump 34, water distribution valve 35, water cup 36, lower spray arm 37, middle spray arm 38, upper spray arm 39, inner tank 40, fifth pipe 41, sixth pipe 42, anti-siphon device 43. Detailed implementation mode

[0035] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where 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 drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0036] As Figure 1 and Figure 2, the water tank assembly 100 according to an embodiment of the present utility model is used for a dishwasher. The water tank assembly 100 includes: a water tank 3. The water tank 3 has a water storage space 301 and a heat exchange space 302. The water storage space 301 can be used for temporarily storing water and can be used for 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 pre-heated in advance to reduce the time for heating 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 further include a heat exchange unit 44. The heat exchange unit 44 is disposed in the heat exchange space 302 and partitions a first heat exchange channel (not shown in the figure) and a second heat exchange channel 3032 in the heat exchange space 302. The first heat exchange channel and the second heat exchange channel 3032 are distributed at intervals. The first heat exchange channel communicates with the water storage space 301, and the second heat exchange channel 3032 exchanges heat with the first heat exchange channel. The heat exchange between the first heat exchange channel and the second heat exchange channel 3032 can be used to exchange heat of the water in the water tank 3. Among them, the second heat exchange channel 3032 can be introduced with the waste water generated during the washing process of the dishwasher, or can be other water to heat the water in the water tank 3.

[0037] For the water tank assembly 100 according to an embodiment of the present utility model, by disposing the heat exchange space 302 and the water storage space 301 in the water tank 3, the heat exchange space 302 can be used to exchange heat of the water in the water storage space 301, improving the 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, and the heat of the fluid introduced into the second heat exchange channel 3032 can be fully utilized to further improve the heat exchange efficiency and the heat recovery efficiency.

[0038] The water tank 3 in the present utility model can have various different structures. For example, the water tank 3 can be set to include a first housing and a second housing. A hollow structure is provided in the first housing, and the second housing is disposed in the hollow structure, etc. Some embodiments of the water tank 3 are also provided in the present utility model, such as Figure 2 and Figure 3 , the water tank 3 includes a main body portion 305 and a partition member 306. The partition member 306 is connected to the main body portion 305 and partitions a water storage space 301 and a heat exchange space 302 in the main body portion 305. Through the partition member 306, the water storage space 301 and the heat exchange space 302 can be separated, so as to facilitate the construction of the water storage space 301 and the heat exchange space 302 in the water tank 3, simplifying the structure of the water tank 3. In addition, through the partition of the partition member 306, when the heat in the heat exchange space 302 is lost, a part of the lost heat will be absorbed by the water in the water storage space 301, which can reduce the heat loss and improve the energy efficiency.

[0039] Among them, the main body 305 includes a bottom shell 3051 and a cover plate 3052. The bottom shell 3051 and the cover plate 3052 are distributed relatively, and the separator 306 is arranged 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 is configured as a heat exchange space 302, and the water storage space 301 is arranged outside the first annular rib 3061. The first annular rib 3061 can construct the peripheral wall of the heat exchange space 302, and the bottom shell 3051 and the cover plate 3052 can be configured as the top wall and the bottom wall 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, which simplifies the structure of the water tank 3. And through the isolation of the first annular rib 3061, the structural strength and stability of the water tank 3 can be improved, preventing water leakage from the heat exchange space 302 to the water storage space 301 and increasing the service life of the water tank 3.

[0040] Optionally, the separator 306 further includes a second annular rib 3062. The second annular rib 3062 surrounds the first annular rib 3061 and is spaced apart from the first annular rib 3061. Through the cooperation of the second annular rib 3062 and the first annular rib 3061, the isolation effect between the heat exchange space 302 and the water storage space 301 can be further improved, preventing water leakage from the water tank 3 and enhancing the stability and structural strength of the water tank 3.

[0041] Furthermore, the separator 306 further includes a plurality of connecting ribs 3063. The plurality of connecting ribs 3063 are arranged between the first annular rib 3061 and the second annular rib 3062 and are 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.

[0042] In some embodiments of the present utility model, the separator 306 is integrally formed with the bottom shell 3051; and / or, the cover plate 3052 is welded, bonded or heat-melted to the separator 306. Thereby, the structure of the water tank 3 can be simplified, facilitating the fabrication and molding of the water tank 3.

[0043] In some embodiments of the present utility model, the heat exchange space 302 includes a first flow dividing groove 3071, a first flow collecting groove 3073 and a heat exchange area (not shown in the figure, refer to Figure 2(in the area between the first flow dividing groove 3071 and the first flow collecting groove 3073), the heat exchange area is arranged between the first flow dividing groove 3071 and the first flow collecting groove 3073, the heat exchange unit 44 is arranged in the heat exchange area, and the first flow dividing groove 3071 and the first flow collecting groove 3073 are connected to the first heat exchange channel. The first fluid can be introduced into the first flow dividing groove 3071, and then flow into the first heat exchange channel through the first flow dividing groove 3071, so that the first fluid can be stably and relatively evenly introduced into the first heat exchange channel; after heat exchange, the first fluid in the first heat exchange channel will be introduced into the first flow collecting groove 3073, and will be discharged from the heat exchange space 302 after converging in the first flow collecting groove 3073. Thus, the heat exchange between the first fluid and the second fluid in the heat exchange part is realized, and the heat exchange effect and heat exchange efficiency are improved, avoiding that more fluid is introduced into a local space of the heat exchange part while less fluid is introduced into other parts, and improving the uniformity of fluid introduction.

[0044] Among them, the heat exchange unit 44 may include a plurality of heat exchange tubes 441. The plurality of heat exchange tubes 441 are arranged in the heat exchange space 302. A first heat exchange channel connecting the first flow dividing groove 3071 and the first flow collecting groove 3073 is constructed inside the heat exchange tube 441, and a second heat exchange channel 3032 that heat-exchanges with the first heat exchange channel is constructed outside the heat exchange tube 441. Among them, the plurality of heat exchange tubes 441 may be arranged at intervals along the width direction of the heat exchange space 302. A first heat exchange channel is constructed inside the heat exchange tube 441, and the plurality of heat exchange tubes 441 construct a plurality of first heat exchange channels. A second heat exchange channel 3032 may be constructed between adjacent heat exchange tubes 441 and / or between the heat exchange tube 441 and the inner side surface of the heat exchange space 302. The first heat exchange channel and the second heat exchange channel 3032 may exchange heat through the tube wall of the heat exchange tube 441. The heat exchange tube 441 may be a microchannel flat tube, which can further improve the heat exchange efficiency between the first heat exchange channel and the second heat exchange channel 3032.

[0045] Optionally, the first heat exchange channel extends in the up-down direction, and the second heat exchange channel 3032 extends in the up-down 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.

[0046] Furthermore, the water tank assembly 100 further includes a first partition assembly 3081 and a second partition assembly 3082. The first partition assembly 3081 and the second partition assembly 3082 are respectively arranged at both ends of the heat exchange area, and both ends of the plurality of heat exchange tubes 441 respectively penetrate through the first partition assembly 3081 and the second partition assembly 3082. The first partition assembly 3081 and the second partition assembly 3082 can be used to separate the heat exchange area, the first flow dividing groove 3071 and the first flow collecting groove 3073, so as to facilitate the stable and effective heat exchange of the fluid in the heat exchange area, improve the heat exchange efficiency and effect, and avoid the mixing of the fluids exchanging heat with each other.

[0047] Optionally, the first flow dividing groove 3071 is arranged below the heat exchange area, and the first flow collecting groove 3073 is arranged above the heat exchange area. The first fluid (water in the water tank) can be introduced into the heat exchange space 302 from the first flow dividing groove 3071, enter the heat exchange area along the heat exchange tube 441 for heat exchange, and after heat exchange, discharge from the first flow collecting groove 3073 out of the heat exchange space 302 and enter the water storage space 301, which can simplify the structure of the water tank assembly 100 and improve the heat exchange effect on the fluid in the water storage space 301.

[0048] Among them, the heat exchange space 302 is provided with a first water inlet 3091 and a first water outlet 3093. The first water inlet 3091 is communicated with the first flow dividing groove 3071, the first water outlet 3093 is communicated with the first flow collecting groove 3073. The first water inlet 3091 is arranged on the lower side wall of the heat exchange space 302, and the first water outlet 3093 is arranged on the upper side wall of the heat exchange space 302. It can facilitate the introduction and discharge of the fluid into and out of the heat exchange space 302.

[0049] The heat exchange space 302 is also provided with a second water inlet 3092 and a second water outlet 3094. The second water inlet 3092 and the second water outlet 3094 are communicated with the heat exchange area. The second water inlet 3092 is arranged on the lower side wall of the heat exchange space 302, and the second water outlet 3094 is arranged on the upper side wall of the heat exchange space 302. Among them, the second water inlet 3092 can be arranged in the middle area of the lower side wall of the heat exchange space 302, the second water outlet 3094 can be arranged in the middle area of the upper side wall of the heat exchange space 302. The first water inlet 3091 and the second water inlet 3092 are distributed along the width direction of the heat exchange space 302, and the second water inlet 3092 and the second water outlet 3094 are distributed along the width direction of the heat exchange space 302.

[0050] Second flow dividing grooves 3072 and second flow collecting grooves 3074 can be respectively arranged at both ends of the heat exchange area. The second fluid can be introduced into the second flow dividing groove 3072, and then flow into the second heat exchange channel 3032 through the second flow dividing groove 3072, so that the second fluid can be stably and relatively evenly 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 flow dividing groove 3071 and the second flow dividing groove 3072 extend along the width direction and are distributed along the length direction of the heat exchange space 302. The first flow collecting groove 3073 and the second flow collecting groove 3074 extend along the width direction and are distributed along the length direction of the heat exchange space 302. Thereby, the structure in the heat exchange space 302 can be simplified, and the stability and structural strength of the water tank 3 can be improved. Among them, the first partition assembly 3081 can be arranged between the first flow dividing groove 3071 and the second flow dividing groove 3072, and the second partition assembly 3082 can be arranged between the first flow collecting groove 3073 and the second flow collecting groove 3074.

[0051] Water can enter the first diversion tank 3071 through the first water inlet 3091 and enter the second diversion tank 3072 through the second water inlet 3092; the fluid collected in the first confluence tank 3073 can be sent out through the first water outlet 3093, and the fluid collected in the second confluence tank 3074 can be sent out through the second water outlet 3094. Among them, in combination with the foregoing, the first water inlet 3091, the second water inlet 3092, the first water outlet 3093, and the second water outlet 3094 can be provided on the partition member 306. For example, the first water inlet 3091, the second water inlet 3092, the first water outlet 3093, and the second water outlet 3094 are provided on the aforementioned first annular rib 3061 and the second annular rib 3062.

[0052] In addition, the heat exchange area is provided with a first convex portion 3076. The first convex portion 3076 is provided between the second diversion tank 3072 and the second confluence tank 3074, and the first convex portion 3076 protrudes from the inner bottom surface of the second diversion tank 3072 and the inner bottom surface of the second confluence tank 3074. The heat exchange area is further provided with a second convex portion 3077. The second convex portion 3077 can be provided on the first convex portion 3076 and protrude relative to the first convex portion 3076. The second convex portion 3077 can be provided to extend along the length direction of the heat exchange space 302, and heat exchange sub-areas are respectively constructed on both sides of the second convex portion 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, and the first sub-unit and the second sub-unit are respectively provided in the heat exchange sub-areas.

[0053] As Figure 1 The water tank 3 is further provided with a plurality of flow paths and a plurality of water path interfaces. At least a part of the plurality of water path interfaces are respectively communicated with the plurality of flow paths. The plurality of flow paths include heat exchange flow paths communicated with 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. Among them, the fluid in the second heat exchange channel 3032 can be waste water with residual heat during the washing process, and can also be other types of hot water, etc. The heat exchange space 302 can be used to adjust the water temperature in the water tank 3. When it is necessary to use the water in the water tank 3 to participate in the washing, since the water in the water tank 3 is preheated, the working efficiency of the dishwasher can be improved. In addition, the second heat exchange channel 3032 can be connected to a water cup so as to use the hot water with residual heat during the washing process to heat the water in the water tank 3, which can improve the energy efficiency of the dishwasher.

[0054] The water tank 3 is provided with a heat exchange space 302, and heat exchange of the stored water in the water tank 3 can be realized. By providing the heat exchange space 302 in the water tank 3, the integration degree of the dishwasher can be improved, which is convenient for the assembly and maintenance of the dishwasher. In addition, by providing the heat exchange space 302 in the water tank 3, the pipeline of the water tank assembly 100 can be shortened, the heat exchange efficiency can be improved, and the water leakage points can be reduced.

[0055] AsFigure 1 and Figure 4 In some embodiments, the heat exchange flow path includes a first flow path 311, and the plurality of water path interfaces include a first interface 321 and a second interface 322. One end of the first heat exchange channel communicates with the water storage space 301, and one end of the first flow path 311 communicates with the other end of the first heat exchange channel. Combining the foregoing, one end of the first heat exchange channel communicates with the water storage space 301 through the first water outlet 3093, and the other end of the first heat exchange channel communicates with the first flow path 311 through the first water inlet 3091. The other end of the first flow path 311 communicates with the first interface 321, and the second interface 322 communicates with the water storage space 301. During use, the water in the water tank 3 can be connected to the first heat exchange channel in the heat exchange space 302 through the first flow path 311, so as to facilitate heat exchange of the water in the water tank 3 by using the heat exchange space 302. The dishwasher may further include a water pump, and the water pump may communicate with the first interface 321 and the second interface 322. In this way, the water tank 3, the first flow path 311, the first heat exchange channel, and the water pump are connected into a circulation loop.

[0056] Wherein, the first heat exchange channel may be arranged to extend in the up-down direction. The upper end of the first heat exchange channel communicates with the water storage space 301, the upper end of the first flow path 311 communicates with the lower end of the first heat exchange channel, and the lower end communicates with the first interface 321; in addition, the second interface 322 may communicate with the lower end of the water storage space 301. The flow path can be simplified, and the heat exchange efficiency and effect can be optimized.

[0057] Such as Figure 1 and Figure 4 In some embodiments, the heat exchange flow path further includes a third flow path 313 and a fourth flow path 314, and the plurality of water path interfaces include a third interface 323 and a fourth interface 324. One end of the third flow path 313 communicates with one end of the second heat exchange channel 3032 and the other end communicates with the third interface 323, and one end of the fourth flow path 314 communicates with the other end of the second heat exchange channel 3032 and the other end communicates with the fourth interface 324. Combining the foregoing, one end of the second heat exchange channel 3032 communicates with the third flow path 313 through the second water inlet 3092, and the other end of the first heat exchange channel communicates with the fourth interface 324 through the second water outlet 3094. The third interface 323 and the fourth interface 324 can be connected to 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 communicates with one of the third interface 323 and the fourth interface 324, and the other of the third interface 323 and the fourth interface 324 communicates with the inlet of the water cup, so as to form a fluid path, so as to facilitate using the water with residual heat in the water cup to heat the water in the water tank 3 and realize the recovery of the residual heat of the washing water. Optionally, the lower end of the second heat exchange channel 3032 communicates with the third flow path 313, and the upper end of the second heat exchange channel 3032 communicates with the fourth flow path 314. Optionally, the second heat exchange channel 3032 extends in the up-down direction.

[0058] Further, the multiple flow paths further include a fifth flow path 315 and a sixth flow path 316. The lower end of the fifth flow path 315 communicates with the second heat exchange channel 3032, and the upper end extends to the upper part of the water tank 3 and communicates with the external space of the water tank 3. The upper end of the sixth flow path 316 communicates with the upper end of the fifth flow path 315, and the lower end communicates with the fourth flow path 314. Through the fifth flow path 315 and the sixth flow path 316, the air pressure inside and outside the fourth flow path 314 can be balanced, so as to facilitate the flow of fluid through the fourth flow path 314 and the passage where 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 conveniently emptied.

[0059] In some embodiments, the heat exchange flow paths include a first flow path 311, a third flow path 313, and a fourth flow path 314, and the multiple water path interfaces include a first interface 321, a second interface 322, a third interface 323, and a fourth interface 324. Among them, 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 in the vertical direction, and the first flow path 311 is arranged between the third flow path 313 and the fourth flow path 314. The heat exchange efficiency of the fluid flowing into the first heat exchange channel and the second heat exchange channel 3032 can be improved, and the heat recovery performance can be improved. In addition, before the fluid in the water tank flows into the first heat exchange channel, it can exchange heat in the first flow path 311 with the third flow path 313 and the fourth flow path 314 to further improve the heat recovery performance.

[0060] In some embodiments, the multiple water path interfaces are arranged at the lower end of the water tank along the width direction of the water tank, which can facilitate the connection of the water path interfaces to other components such as a water softener and simplify the assembly of the dishwasher. The heat exchange flow paths include a plurality of them arranged side by side along the width direction of the water tank; and / or, the heat exchange flow paths extend in the vertical direction, and the upper end of the heat exchange flow path communicates with the first heat exchange channel or the second heat exchange channel 3032, and the lower end communicates with the corresponding water path interface. The water path layout can be optimized, the heat exchange effect can be improved, the energy consumption can be reduced, and the flow path layout of the water tank assembly 100 can be optimized.

[0061] As Figure 1 and Figure 4 In some embodiments, the multiple flow paths further include a water inlet flow path 12, and the multiple water path interfaces 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, and the production and assembly of the dishwasher can be facilitated.

[0062] In addition, the water tank assembly 100 may further include a one-way valve 11. The one-way valve 11 is disposed in the water inlet flow path 12 and configured to conduct unidirectionally from the fifth interface 325 to the sixth interface 326, thereby preventing siphoning in the water inlet flow path 12. In addition, the water tank assembly 100 may further include a flow meter 14. The flow meter 14 may be connected in series with the water inlet flow path 12. Through the cooperation of the flow meter 14 and the water inlet valve, quantitative water supply can be achieved.

[0063] Optionally, the water inlet flow path 12 and the heat exchange flow path are respectively disposed on the left and right sides of the water storage space 301, which can optimize the distribution of the flow paths 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 may be disposed on the same side of the water storage space 301 along the left-right direction.

[0064] At least a part of the water inlet flow path 12 inclines towards the heat exchange flow path in the top-down direction; and / or, at least a part of the heat exchange flow path inclines towards the water inlet flow path 12 in the top-down direction. Thereby, it is convenient to concentrate multiple waterway interfaces at the middle position at the lower end of the water tank 3, facilitating the connection between the water tank 3 and other structures through the waterway interfaces and simplifying the structure of the dishwasher.

[0065] For example, the dishwasher of the present utility model may further include a water softener 20. The water softener 20 may include multiple water tank interfaces, and the multiple water tank interfaces are respectively connected to the multiple waterway interfaces. At this time, 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 waterway interfaces along the left-right direction can be reduced, facilitating the connection between the water tank 3 and the water softener 20 and facilitating the assembly of the dishwasher.

[0066] Such as Figure 1 and Figure 4 , in some embodiments, the multiple flow paths further include a make-up water flow path 8. The make-up water flow path 8 is used to supply water to the water tank 3. The multiple waterway interfaces further include a seventh interface 327. One end of the make-up water flow path 8 is disposed at the upper end of the water storage space 301 and communicates with the water storage space 301, and the other end of the make-up water flow path 8 communicates with the seventh interface 327. The make-up water flow path 8 is disposed on the side of the water storage space 301 close to the water inlet flow path 12. Thereby, it is convenient to supply water to the make-up water flow path 8 through the seventh interface 327 to facilitate water supply to the water tank 3.

[0067] Optionally, the multiple waterway interfaces further include an eighth interface 328. The eighth interface 328 communicates with the lower end of the water storage space 301. The water tank assembly 100 further includes a first switching valve for opening and closing the eighth. Among them, the eighth interface 328 can be used as the outlet of the water tank 3, facilitating the delivery of the water in the water tank 3. For example, by opening the first switching valve, the water in the water tank 3 can be sent through the fourth interface 324 into the water cup 36 for use in the dishwasher.

[0068] In some embodiments, a plurality of waterway interfaces are provided at the lower end of the water tank 3 and are arranged side by side in the left-right direction. This can simplify the structure of the water tank 3 and facilitate the connection of the water tank 3 to other structures. For example, a plurality of waterway interfaces can be connected to the water softener 20. The water softener 20 can be provided with a plurality of water tank interfaces, so that the plurality of waterway interfaces and the plurality of water tank interfaces can be correspondingly connected to each other, realizing the stable connection between the water tank 3 and the water softener 20, simplifying the distribution of the flow path, and improving the stability of the dishwasher.

[0069] Such as Figure 1 and Figure 4 , the dishwasher according to an embodiment of the present invention includes: a water cup 36; the aforementioned water tank assembly 100, and the second heat exchange channel 3032 communicates with the water cup 36. Specifically, the washing water with residual heat in the water cup 36 can be introduced into the second heat exchange channel 3032, and the first heat exchange channel communicates with the water storage space 301. In this way, the water in the water tank 3 can be heated by the washing water with residual heat, realizing waste heat recovery, energy conservation and environmental protection.

[0070] In some embodiments, the dishwasher further includes a water softener 20, which is connected to the water tank assembly 100. The plurality of flow paths include a water inlet flow path 12. The inlet of the water inlet flow path 12 is connected to a water source, and the outlet communicates with the water softener 20. The water softener 20 can be provided with a water inlet and a resin chamber. Among them, the water inlet can be connected to the fifth interface 325, and the inlet of the resin chamber can be connected to the sixth interface 326. In addition, the water softener 20 can also be provided with a water cup 36 interface for connecting the inlet of the water cup 36, so as to realize the introduction of softened water into the water cup 36.

[0071] Optionally, the water softener 20 is provided with a plurality of channels and a plurality of water tank interfaces. The plurality of water tank interfaces communicate with the plurality of channels respectively, and the plurality of water tank interfaces communicate with the plurality of waterway interfaces correspondingly. Thereby, the integration degree of the dishwasher can be improved and the leakage points can be reduced.

[0072] The water cup 36 is used for temporarily storing water and filtering the washing water. During the use of the dishwasher, the water during the washing process can be stored in the water cup 36 to facilitate the centralized discharge of the washing water and collect residues during the washing process, etc. It further includes a water tank 3, and the water tank 3 has a water storage space 301. The water storage space 301 can be used for storing water, and the work of the dishwasher can be facilitated by storing water, thereby improving the washing efficiency and effect. In addition, it can further include a washing box, and a washing space is provided in the washing box for placing tableware to be washed, etc. Among them, the water cup 36 can be arranged at the bottom of the washing box and communicated with the washing space.

[0073] In addition, the dishwasher may further include a first switching valve 24. One end of the first switching valve 24 is communicated with the outlet of the water tank 3, and the first switching valve 24 can be used to control the opening and closing of the outlet of the water tank 3. It further 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 is communicated with the other end of the first switching valve 24 and the water inlet flow path 12. The second connection port is communicated with the inlet of the water tank 3, and the third connection port is connected to the inlet of the water cup 36. The water flow direction can be controlled by the sorting structure.

[0074] In addition, the water tank 3 in the present utility model can be stacked on the side wall, bottom wall or top wall of the washing tank, etc.

[0075] Such as Figure 1 and Figure 4 , in some embodiments, the dishwasher has at least two working modes, and the water distribution structure 25 is set to control the first connection port 21 to selectively communicate with the second connection port and the third connection port according to at least two working modes. Thus, the working mode of the dishwasher can be switched by adjusting the water distribution structure 25 to facilitate the use of the dishwasher.

[0076] Optionally, the dishwasher in the present utility model may include but is not limited to the following working modes.

[0077] In some examples, the dishwasher has a first working mode. In the first working mode, the first switching valve 24 is closed and the first connection port 21 and the second connection port are communicated to supply water to the water tank 3. In the first working mode, after the water in the water inlet flow path 12 reaches the first connection port 21, the water will flow to the second connection port, thereby realizing water supply to the water tank 3. A water level sensor can be arranged in the water tank 3 or a flow sensor can be arranged in the water inlet flow path 12. When the water volume in the water tank 3 reaches the preset water volume, the water inlet flow path 12 will be closed, thereby completing the water supply of the water tank 3.

[0078] In some examples, the dishwasher further has a second working mode. In the second working mode, the first switching valve 24 is closed, and the first connection port 21 and the third connection port are communicated to supply water to the water cup 36. In the second working mode, after the water in the water inlet flow path 12 reaches the first connection port 21, the water will flow to the third connection port, thereby realizing water supply to the water cup 36. A flow sensor can be arranged in the water inlet flow path 12. When the water volume in the water cup 36 reaches the preset water volume, the water inlet flow path 12 will be closed, thereby completing the water supply to the water cup 36.

[0079] In some examples, the dishwasher further has a third working mode. In the third working mode, the first switching valve 24 is opened, and the first connection port 21 is communicated with the third connection port for supplying water to the water cup 36 through the water tank 3. In the third working mode, the water inlet flow path 12 is closed, the water in the water tank 3 flows out from the outlet, and after passing through the first switching valve 24, it flows to the first connection port 21, and then flows to the water cup 36 through the third connection port, so as to supply water to the water cup 36. When the water volume in the water cup 36 reaches the preset water volume, the first switching valve 24 can be closed, thereby completing the water supply to the water cup 36.

[0080] In some embodiments, the dishwasher further includes a water softener 20. The water softener 20 is connected between the water inlet flow path 12 and the first connection port 21 for supplying softened water to the first connection port 21. By providing the water softener 20, softened water can be provided to improve the washing efficiency and effect of the dishwasher. In addition, the water softener 20 is provided before the first connection port 21, and can supply softened water into the water tank 3 and the water cup 36 to achieve full soft water washing.

[0081] In some embodiments, the water distribution structure 25 is installed on the water softener 20; and / or, at least a part of the pipeline between the water distribution structure 25 and the water tank 3 is integrated into the water softener 20; and / or, at least a part of the pipeline between the water distribution structure 25 and the water cup 36 is integrated into the water softener 20. It can facilitate the integration of the water softener 20, simplify the structure of the dishwasher, and facilitate the maintenance of the dishwasher, etc., and optimize the space utilization rate of the dishwasher.

[0082] In some embodiments, the water inlet flow path 12 is integrated into the water tank 3. The water tank 3 is connected to the water softener 20, and the water inlet flow path 12 communicates with the soft water flow path in the water softener 20; and / or, the water softener 20 is provided with a water source interface. The water inlet flow path 12 is integrated into the water tank 3. The water tank 3 is connected to the water softener 20, and the water inlet flow path 12 communicates with the water source interface. The connection between the water tank 3 and the water softener 20 can be used to make the flow path in the water tank 3 communicate with the flow path in the water softener 20, so as to facilitate the integration of components, and can facilitate the assembly of the dishwasher, improving the assembly efficiency and stability of the dishwasher.

[0083] 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 is docked with at least one water softener 20 interface. It can simplify the assembly structure of the water softener 20 and the water tank 3, thereby further simplifying the structure of the dishwasher.

[0084] Optionally, the dishwasher further 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 and the outlet of the water cup 36. The pumping of the washing water can be achieved through the circulation pump 34 to realize the dishwashing of the dishwasher. By using the second switching valve 32, the direction of the water flow can be controlled. For example, the second heat exchange channel 3032 and the water cup 36 can be connected by opening the second switching valve 32 to realize the water circulation between the second heat exchange channel 3032 and the water cup 36. Additionally, the water in the water cup 36 can be sent to the washing tank by closing the second switching valve 32 to realize the washing of the tableware and the like in the washing tank.

[0085] Optionally, the dishwasher in the present utility model may include but is not limited to the following working modes.

[0086] In some examples, the dishwasher further has a fourth working mode. In the fourth working mode, the third connection port is disconnected from the first connection port 21, the circulation pump 34 operates, and the second switching valve 32 is opened to send the water in the water cup 36 to the second heat exchange channel 3032. In the fourth working mode, since the circulation pump 34 operates, the water in the water cup 36 can be pumped out. Because the second switching valve 32 is opened, the water in the water cup 36 will be sent to the second heat exchange channel 3032, and after exchanging heat with the water in the first heat exchange channel, it will be sent out. The water sent out from the second heat exchange channel 3032 will be sent to the inlet of the water cup 36. Thus, the purpose of preheating the water in the water tank 3 by using the waste heat of the wastewater in the water cup 36 is achieved, and the energy efficiency of the dishwasher is improved.

[0087] In some examples, the dishwasher further has a fifth working mode. In the fifth working mode, the third connection port is connected to the first connection port 21, the circulation pump 34 rotates in reverse or stops, and the second switching valve 32 is opened to flush the second heat exchange channel 3032. In the fifth working mode, the water in the water 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 will be sent to the second heat exchange channel 3032. After passing through the second heat exchange channel 3032, it will be sent to the water cup 36 through the second switching valve 32, thereby realizing the reverse flushing of the second heat exchange channel 3032.

[0088] Optionally, a third switching valve may further be provided between the third connection port and the inlet of the water cup 36. The third switching valve can be provided between the second heat exchange channel 3032 and the inlet of the water cup 36, so as to control the flow direction of the water sent out from the third connection port through the third switching valve. Additionally, a fourth switching valve may further be provided between the second heat exchange channel 3032 and the third connection port. The third switching valve and the fourth switching valve can also be combined into a reversing valve.

[0089] Optionally, a fifth switching valve may 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. Additionally, the second switching valve 32 and the fifth switching valve may be combined to form a reversing valve.

[0090] To meet the requirements of large-capacity dishwashers, the heat exchange system of the present utility model has a small overall size, a simple structure, does not occupy the space of the original inner tank 40 of the dishwasher, and the volume of the heat exchange space 302 in the present utility model is much smaller than any heat exchange space 302 in the above-mentioned utility model patent, and the heat exchange efficiency is greater than 90%; the auxiliary equipment and connecting pipelines used in the heat exchange system of the present utility model are simpler and easier to install.

[0091] Some specific embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0092] As Figure 4 shown in a flow path system of a dishwasher, including at least one of an inner tank 40, a water cup 36, a water tank 3, a water softener 20, a water distribution structure 25, a circulating pump 34, a water pump 26, a drainage pump 2630, a water distribution valve 35, an inlet valve 19, a drainage valve, a check valve 11, a flow meter 14, a first switching valve 24, and a second switching valve 32.

[0093] The inner tank 40 is provided with a washing space, and at least one of a lower spray arm 37, a middle spray arm 38, and an upper spray arm 39 is provided in the washing space. The lower spray arm 37, the middle spray arm 38, and the upper spray arm 39 are connected to the water distribution valve 35, the water distribution valve 35 is connected to the circulating pump 34, and the circulating pump 34 is connected to the outlet of the water cup 36. The water cup 36 is connected below the inner tank 40 and communicates with the washing space. The water tank 3 is provided with a water storage space 301 and an inner tank 40 interface for connecting to the inner tank 40. The water tank 3 is an integrated device arranged on the side plate of the dishwasher. The water tank 3 is provided with an inlet water flow path 12, and a flow meter 14 and a check valve 11 are connected in series in the inlet water flow path 12. The check valve 11 is used for the one-way conduction of the inlet water flow path 12 and can play a role in preventing siphonage. 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 water channel and a softened water channel. The inlet water channel is connected to an inlet valve 19 and communicates with the inlet of the inlet water flow path 12. The inlet of the softened water channel communicates with the outlet of the inlet water channel, and the outlet of the softened water channel communicates with 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 softened water channel, the second connection port communicates with the inlet of the water tank 3, and the third connection port communicates with the water cup 36. The first switching valve 24 is connected between the first connection port 21 and the outlet of the water tank 3. The main function of the check valve 11 is to realize the one-way conduction function of the water path and the gas path to ensure that the water flow can only flow in the inlet direction and cannot flow reversely.

[0094] The water tank of the present utility model is integrated with a flow path. The water tank is provided with a fourth flow path 314, and the fourth flow path 314 is a pipeline for circulating hot water inside the water tank 3. The fourth flow path 314 can be connected to the fourth pipeline 28, and is used to connect the heat exchange space 302 and the inlet of the water cup 36, so as to enable the water flow in the heat exchange space 302 to enter the water cup 36 through the fourth flow path 314, the fourth pipeline 28, and the inlet of the water cup 36. At this time, the second switch valve 32 and the water pump 26 can be selected as low-voltage electrical appliances (low-voltage solenoid valve and low-voltage water pump 26). When the water cup 36 is being filled with water, at this time, the water flow will reverse through the fourth flow path 314 into the heat exchange space 302 and pass through the first hot water pipeline 31, the second switch valve 32, the second hot water pipeline 33, and the circulation pump 34 into the water cup 36 to complete the backwashing of the heat exchange space 302; the water tank is provided with a second channel 2, and the second channel 2 is a ventilation / overflow connection flow channel of the water tank 3, which is 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, and it is an integral structure with the water tank 3; the water tank 3 is an integrated device, mainly integrating structures such as the fourth flow path 314, the second channel 2, the water tank water inlet 4, the inner tank connection port 5, the cold water outlet 6, the make-up water 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, etc., and it is arranged on the side plate of the dishwasher; the water tank water inlet 4 is the highest point of the water tank 3 for water inlet, and it is also the water inlet of the water tank 3; the inner tank connection port 5 and the water tank 3 are of an integral structure, mainly used to realize the intercommunication 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, mainly used for the cold water in the heat exchange space 302 to enter the water tank 3.

[0095] The make-up water flow path 8 is an inlet connection pipeline, integrated into the water tank 3, and is used to connect the water tank inlet 4 and the water distribution structure 25; the third flow path 313 is a hot water connection pipeline, integrated into the water tank 3, and is used to connect the heat exchange space 302 and the first hot water pipeline 31; the first flow path 311 is integrated into the water tank 3 and is used to connect the heat exchange space 302 and the second cold water pipeline 27; the main function of the one-way valve 11 is to achieve the one-way conduction function of the water path and the gas path, so as to ensure that the water flow can only enter the water softener 20 after passing through the inlet water flow path 12 and the first pipeline 15, and cannot enter the inlet water flow path 12 after passing through the first pipeline 15 from the water softener 20; the inlet water flow path 12 is the connection pipeline between the one-way valve 11 and the flow meter 14, integrated into the water tank 3; the drain anti-siphon structure 13 is a drain and drain anti-siphon structure, the upper end pipeline of which extends to the top of the water tank 3 and is connected to the anti-siphon device 43, integrated into the water tank 3, and there is a pipeline inside it connected to the drain pipeline 17, which can realize drainage; the flow meter 14 is mainly used to calculate the inlet water flow, and can cooperate with the inlet valve 19 to control the water intake of the dishwasher, and it is integrated into the water tank 3; the first pipeline 15 is a connecting pipeline, 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 pipeline 16 is used to connect the water distribution structure 25 and the make-up water flow path 8 to realize the water intake function of the water tank 3; the drain pipeline 17 is mainly used to drain the water cup 36 into the domestic sewage pipeline; the inlet pipeline 18 is mainly used to connect the tap water port and the dishwasher equipment; the inlet valve 19 is mainly used to control the on-off of the pipeline inlet pipeline 18, which is located on the inlet pipeline 18 and can also be integrally arranged on the water softener 20; the water softener 20 is mainly used to soften the tap water entering the dishwasher, and 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, mainly used to connect the water softener 20 and the water distribution structure 25; the first cold water pipeline 22 is used to connect the water tank 3 and the water pump 26; the third pipeline 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 on-off of the pipeline third pipeline 23, and can control the water discharge of the water tank 3. When the water tank 3 discharges water, the first switch valve 24 is opened, the first connection port 21 in the water distribution structure 25 is connected to the fourth pipeline 28, and the water flow enters the water cup 36 from the water tank 3 through the first switch valve 24, the third pipeline 23, the first connection port 21, the fourth pipeline 28, and the inlet of the water cup 36; the water distribution structure 25 is mainly used to realize the switching between the second pipeline 16 and the fourth pipeline 28 of the water path. When the water tank 3 needs to intake water, it can connect the first connection port 21 to the second pipeline 16, and when the water cup 36 needs to intake water, it can connect the first connection port 21 to the fourth pipeline 28. It can be integrally arranged on the water softener 20 or arranged separately;The water pump 26 is used to transport the water flow in the water tank 3 through the first cold water pipeline 22, the second cold water pipeline 27, and the first flow path 311 to the heat exchange space 302, and return it to the water tank 3 through the cold water outlet 6 to form a cold water flow cycle. It can be integrated on the water softener 20 to form an integrated structure, or it can be independently arranged; the second cold water pipeline 27 is used to connect the water pump 26 and the first flow path 311; the fourth pipeline 28 is used to connect the second pipeline 16 and the water inlet valve 19, and is also used to connect the third pipeline 23 and the inlet of the water cup 36 to realize the water inlet of the water cup 36; the inlet of the water cup 36 is used to connect the water cup 36 and is the water inlet interface of the water cup 36; the drain pump 30 is used to transport the water flow in the water cup 36 through the drain anti-siphon structure 13 and the drain pipeline 17 to the domestic sewage pipeline, and the drain pump 30 can also be used to directly transport the water flow in the water cup 36 to the domestic sewage pipeline.;

[0096] The first hot water pipe 31 is used to connect the second switching valve 32 and the third flow path 313 to realize hot water delivery; the second switching valve 32 is used to control the on / off of the connection between the second switching valve 32 and the second hot water pipe 33; the second hot water pipe 33 is used to connect the circulation pump 34 and the second switching valve 32. When the water distribution valve 35 is closed, opening the second switching valve 32 can enable the water flow 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 switching valve 32, the first hot water pipe 31, the third flow path 313, the heat exchange space 302, the fourth flow path 314, and the fourth pipe 28 into the water cup 36, thus forming a hot water flow cycle; the circulation pump 34 is used to transport and heat the fluid; the water distribution valve 35 is used to realize water path switching and 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; the water cup 36 is mainly used to store / collect the water flow in the inner tank 40; the lower spray arm 37 is used to realize the spraying and washing of the lower spray arm 37; the middle spray arm 38 is used to realize the spraying and washing of the middle spray arm 38; the upper spray arm 39 is used to realize the spraying and washing of the upper spray arm 39; the inner tank 40 is used to form the frame, enclosure, support and other structures of the dishwasher; the fifth pipe 41 is used to connect the second channel 2 and the anti-siphon device 43 and is connected to the sixth pipe 42 through the anti-siphon device 43, finally realizing the connection between the water tank 3, the inner tank connection port 5, the fifth pipe 41 and the external space, so that the gas in the inner tank 40 can 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. In addition, the position where the fifth pipe 41 is connected to the anti-siphon device 43 is higher than the position where the fifth pipe 41 is connected to the second channel 2; the sixth pipe 42 is used to connect the anti-siphon device 43 and the external space, and the position where the sixth pipe 42 is connected to the anti-siphon device 43 is higher than the position where the anti-siphon device 43 is connected to the drain anti-siphon structure 13; the anti-siphon device 43 is used to connect the sixth pipe 42, the fifth pipe 41, and the drain anti-siphon structure 13. A one-way valve device is provided in the structure of the anti-siphon device 43 to ensure that the fluid in the drain anti-siphon structure 13 will not enter the fifth pipe 41 and the sixth pipe 42 through the anti-siphon device 43.

[0097] Such as Figure 4, the second channel 2 communicates with the inner tank connection port 5, the second channel 2 communicates with the fifth pipe 41, and the second channel 2 communicates with the water tank 3; the water tank 3 and the inner tank 40 are fixedly connected by screws, clamping positions, rotary buckles, the structural inner tank connection port 5, etc., so that the inner tank connection port 5 communicates with the inner tank 40, the water tank 3 communicates with the water tank water inlet 4, the water tank 3 communicates with the cold water outlet 6, the water tank 3 communicates with the first cold water pipe 22, and the water tank 3 communicates with the third pipe 23; the housing of the heat exchange device and the water tank 3 form an integral 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 positions are 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 water inlet 4 does not communicate with the fifth pipe 41, and the water tank water inlet 4 is located above the fifth pipe 41; the third pipe 23 communicates with the first connection port 21; the water distribution structure 25 is arranged on the water softener 20 by means of a rotary buckle; the first on-off valve 24 is arranged on the water tank 3 by means of a rotary buckle; the water pump 26 is arranged on the water softener 20 by means of a rotary buckle / screw; the fourth pipe 28 is arranged on the water cup 36 by means of a rotary buckle; the second on-off valve 32 is independently arranged, or can also be arranged on the water softener 20 by means of a rotary buckle; the second pipe 16 does not communicate with the third pipe 23; the water inlet pipe 18 does not communicate with the drain pipe 17; the drain pipe 17 does not communicate with the first hot water pipe 31; the first hot water pipe 31 does not communicate with the fourth pipe 28 and the second cold water pipe 27; the fifth pipe 41 is arranged in the water tank 3 and does not block the integrity of the water tank 3, and the fluid in the water tank 3 in the upper and lower areas of the fifth pipe 41 can still communicate; the sixth pipe 42 and the structure formed by connecting the anti-siphon device 43 and the drain anti-siphon structure 13 divide the water tank 3 into two parts, and these two parts do not communicate; the anti-siphon device 43 is arranged on the water tank 3.

[0098] Its working process under the ECO timing sequence is as follows: Process 1: Before the start of the washing process, open the water inlet valve 19, switch the water distribution structure 25 to connect the water softener 20 with the water distribution structure 25. Tap water passes through the water inlet pipe 18, water inlet valve 19, flow meter 14, water inlet flow path 12, check valve 11, and the first pipe 15 to enter the water softener 20 for softening treatment, and then enters the water tank 3 through the first connection port 21, water distribution structure 25, second pipe 16, make-up water 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 inlet of the water tank 3 is completed. Process 2: When the main wash starts, the water tank 3 discharges water, the first switching valve 24 is opened, the first connection port 21 in the water distribution structure 25 is connected to the fourth pipe 28, and the water flow enters the water cup 36 from the water tank 3 through the first switching valve 24, third pipe 23, first connection port 21, fourth pipe 28, and the inlet of the water cup 36 to complete the water inlet of the water cup 36 before washing, and then close the first switching valve 24; 3 - 10 minutes before the end of the main wash, open the water inlet valve 19, switch the water distribution structure 25 to connect the water softener 20 with the water distribution structure 25 to replenish water to the water tank 3. When the preset water volume is reached, close the water inlet valve 19; open the second switching valve 32 and the water pump 26, adjust the water distribution valve 35 to the closed state, and let the water flow in the washing pump pass through the water cup 36, second hot water pipe 33, second switching valve 32, first hot water pipe 31, and third flow path 313 to enter the heat exchange space 302, and then return to the water cup 36 through the fourth flow path 314 and fourth pipe 28 to complete the washing hot water circulation. When the water pump 26 is opened, the water flow in the water tank 3 will pass through the first cold water pipe 22, water pump 26, second cold water pipe 27, and first flow path 311 and be transported to the heat exchange space 302, and 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 the hot water circulation exchange heat in the heat exchange space 302, transfer the heat in the hot water circulation to the cold water circulation, and finally store the heat in the water tank 3, and then complete the main washing timing; Process three: When rinsing starts, open the water inlet valve 19, switch the water distribution structure 25 so that the water softener 20 is connected to the fourth pipeline 28. After the tap water passes through the water inlet pipeline 18, the water inlet valve 19, the flow meter 14, the water inlet flow path 12, the check valve 11, and the first pipeline 15, it enters the water softener 20 for softening treatment, and then enters the water cup 36 through the first connection port 21, the water distribution structure 25, the fourth pipeline 28, and the inlet of the water cup 36. After the water inlet is completed, cut off the power supply to the water inlet valve 19 and the water distribution structure 25, and start rinsing; Process four: When the second rinsing starts, the first switching valve 24 is opened, and the water tank 3 starts to drain water. The water flow passes through the third pipeline 23, the first switching valve 24, the fourth pipeline 28, and the inlet of the water cup 36 to enter the water cup 36, completing the water inlet of the water cup 36 before washing. Then close the first switching valve 24 and start the second rinsing until the washing is completed; When drying starts, repeat Process one; Through the above process, part of the heat in the dishwasher during the washing process is transferred to the rinsing stage, completing the reuse of the heat of the dishwasher. At the same time, the water tank 3 will absorb heat from the environment during the water storage stage at the start of drying, raising the water temperature inside it to the ambient temperature. Therefore, part of the thermal energy consumed in the subsequent heating process can be reduced, playing an energy-saving role.

[0099] During the operation of the dishwasher, when draining water, the water flow, under the action of the drain pump 30, enters the sewage pipeline through the drain anti-siphon structure 13 and the drain pipeline 17. At this time, the one-way connection relationship between the sixth pipeline 42 and the anti-siphon device 43 can ensure the normal operation of the above process. When the water flow in the drain pipeline 17 flows reversely into the drain anti-siphon structure 13, at this time the sixth pipeline 42 plays a role, so that the water flow in the drain pipeline 17 cannot flow reversely into the drain anti-siphon structure 13; When the dishwasher performs high-temperature washing, the inner tank 40 is connected to the external space through the inner tank connection port 5, the second channel 2, the fifth pipeline 41, the anti-siphon device 43, and the sixth pipeline 42, which can release the pressure generated by the high temperature in the inner tank 40. Otherwise, the inner door of the dishwasher will be pushed open during high-temperature washing; In addition, the position where the fifth pipeline 41 is connected to the anti-siphon device 43 is higher than the position where the fifth pipeline 41 is connected to the second channel 2, which can ensure that when the water volume in the water tank 3 is too much, it can enter the inner tank 40 through the second channel 2 and the inner tank connection port 5, rather than entering the anti-siphon device 43 through the second channel 2 and the fifth pipeline 41.

[0100] By testing the dishwasher with the above heat exchange system and a conventional waste heat recovery type dishwasher under the same working conditions, it can be found that for the heat exchange system of the present invention, under the condition that the flow rate of the water pump 26 is increased, the time required for the same temperature rise is shorter.

[0101] A heat exchange system for energy saving of a dishwasher according to the present utility model has a more compact overall structure, a high degree of integration, fewer required connecting pipelines, and accordingly, the required tooling time is shortened. At the same time, in the heat exchange system of the dishwasher of the present utility model, the volume of the heat exchange space 302 used is very small, only 1 / 6 of the conventional heat exchange space 302, and it can be arranged in the water tank 3 or the base of the dishwasher relatively easily and flexibly.

[0102] A heat exchange system for energy saving of a dishwasher according to the present utility model can prevent backflow in the drain pipe 17 of the dishwasher and can ensure that the inner door of the dishwasher will not open due to excessive pressure during high-temperature washing.

[0103] In the present utility model, a similar heat exchange system design can be achieved by using a higher flow rate or entering a heat exchanger with a larger equivalent diameter. A similar heat exchange system design can also be achieved by adopting other processing methods to realize the same type of microscale heat exchange structure. It is also possible to achieve a similar energy-saving effect by using a larger or more water tanks 3.

[0104] In the related art, the water storage tank and the heat exchange system are connected through an assembly relationship, which has difficulties in assembly and a high risk of leakage at the assembly; and due to the air gap between the water storage tank and the heat exchange component, there is a phenomenon of heat dissipation through the air during heat exchange, resulting in the inability to further improve the heat exchange efficiency. In the present utility model, the heat exchange component and the pipeline are both integrated in the water storage tank, avoiding the leakage risk caused by assembly. In addition, after integration, the entire component and the pipeline exchange heat with the water in the water storage tank through the side wall, adsorbing the heat leakage in the process and improving the heat exchange time and heat exchange efficiency.

[0105] Specifically, after the tap water passes through the inlet valve, it passes through the flow meter and the check valve and leads to the resin cavity of the water softener. The water softened by the resin enters the water storage space 301. The end of the make-up water flow path is located at the top of the water tank, forming a check valve circuit and releasing the end pressure to prevent the back pressure from increasing and the flow rate from slowing down when the water storage space 301 is full. The heat exchange unit 44 and its flow path are both integrated in the water storage tank. In particular, hot water enters the heat exchange space 302 from the third flow path and returns to the water cup from the fourth flow path. The fourth flow path communicates with the top of the water storage tank, forming a check valve circuit to prevent the heat exchange space 302 from leaking and causing the water in the water storage cavity to directly leak back to the inner tank. Since the heat exchange component is directly integrated in the water storage tank body, in addition to the heat exchange inside the heat exchange component, heat exchange also occurs at the position close to the water tank outside, accelerating the overall heat exchange process.

[0106] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0107] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0108] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0109] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0110] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0111] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A water tank assembly for a dishwasher, characterized in that, The water tank assembly includes: A water tank having a water storage space and a heat exchange space; A heat exchange unit disposed in the heat exchange space and partitioning the heat exchange space into a first heat exchange channel and a second heat exchange channel that are spaced apart from each other. The first heat exchange channel communicates with the water storage space, and the second heat exchange channel exchanges heat with the first heat exchange channel.

2. The water tank assembly according to claim 1, characterized in that, The water tank includes a main body portion and a partition member. The partition member is connected to the main body portion and partitions the water storage space and the heat exchange space within the main body portion.

3. The water tank assembly according to claim 2, wherein, The main body portion includes a bottom shell and a cover plate. The bottom shell and the cover plate are disposed opposite to each other, and the partition member is disposed between the bottom shell and the cover plate. The partition member includes a first annular rib, and the inner side of the first annular rib is configured as the heat exchange space, and the water storage space is disposed outside the first annular rib.

4. The water tank assembly according to claim 3, characterized in that, The partition member further includes a second annular rib surrounding the first annular rib, and the second annular rib is spaced apart from the first annular rib; The partition member 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 are distributed around the first annular rib.

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

6. The water tank assembly according to claim 1, characterized in that The heat exchange space includes a first flow dividing groove, a first flow collecting groove and a heat exchange area. The heat exchange area is disposed between the first flow dividing groove and the first flow collecting groove. The heat exchange unit is disposed in the heat exchange area, and the first flow dividing groove and the first flow collecting groove communicate with the first heat exchange channel.

7. The water tank assembly according to claim 6, wherein The heat exchange unit includes a plurality of heat exchange tubes disposed in the heat exchange space. The first heat exchange channel that communicates with the first flow dividing groove and the first flow collecting groove is formed inside the heat exchange tubes, and the second heat exchange channel that exchanges heat with the first heat exchange channel is formed outside the heat exchange tubes.

8. The water tank assembly according to claim 7, characterized in that, The water tank assembly further includes a first partition assembly and a second partition assembly. The first partition assembly and the second partition assembly are respectively disposed at two ends of the heat exchange area, and two ends of the plurality of heat exchange tubes respectively penetrate through the first partition assembly and the second partition assembly.

9. The water tank assembly according to claim 6, wherein The first flow dividing groove is disposed below the heat exchange area, and the first flow collecting groove is disposed above the heat exchange area; and / or, the heat exchange space is provided with a first water inlet and a first water outlet. The first water inlet communicates with the first flow dividing groove, and the first water outlet communicates with the first flow collecting groove. The first water inlet is disposed on the lower side wall of the heat exchange space, and the first water outlet is disposed 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 communicate with the heat exchange area. The second water inlet is disposed on the lower side wall of the heat exchange space, and the second water outlet is disposed on the upper side wall of the heat exchange space.

10. The water tank assembly according to claim 1, characterized in that, The water tank is further provided with a plurality of flow paths and a plurality of waterway interfaces, at least a part of the plurality of waterway interfaces is respectively communicated with the plurality of flow paths, and the plurality of flow paths include a heat exchange flow path communicated with the first heat exchange channel or the second heat exchange channel.

11. The water tank assembly according to claim 10, characterized in that, The heat exchange flow path includes a first flow path, the plurality of waterway interfaces include a first interface and a second interface, one end of the first heat exchange channel is communicated with the water storage space, one end of the first flow path is communicated with the other end of the first heat exchange channel, the other end of the first flow path is communicated with the first interface, and the second interface is communicated with the water storage space.

12. The water tank assembly according to claim 11, characterized in that, The first heat exchange channel extends in the up-down direction, the upper end of the first heat exchange channel is communicated with the water storage space, the upper end of the first flow path is communicated with the lower end of the first heat exchange channel, and the lower end is communicated with the first interface; The second interface is communicated with the lower end of the water storage space.

13. The water tank assembly according to claim 10, characterized in that, The heat exchange flow path further includes a third flow path and a fourth flow path, the plurality of waterway interfaces include a third interface and a fourth interface, one end of the third flow path is communicated with one end of the second heat exchange channel and the other end is communicated with the third interface, and one end of the fourth flow path is communicated with the other end of the second heat exchange channel and the other end is communicated with the fourth interface.

14. The water tank assembly according to claim 13, characterized in that, The second heat exchange channel extends in the up-down direction, the lower end of the second heat exchange channel is communicated with the third flow path, and the upper end of the second heat exchange channel is communicated with the fourth flow path; and / or, the plurality of flow paths further include a fifth flow path and a sixth flow path, the lower end of the fifth flow path is communicated with the second heat exchange channel, and the upper end extends to the upper part of the water tank and is communicated with the external space of the water tank, the upper end of the sixth flow path is communicated with the upper end of the fifth flow path, and the lower end is communicated with 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 plurality of waterway interfaces include a first interface, a second interface, a third interface and a fourth interface. Wherein, 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 up-down direction, and the first flow path is arranged between the third flow path and the fourth flow path.

16. The water tank assembly according to claim 10, characterized in that, The plurality of waterway interfaces are arranged at the lower end of the water tank along the width direction of the water tank; and / or, the heat exchange flow paths include 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 up-down direction, and the upper end of the heat exchange flow path is communicated with the first heat exchange channel or the second heat exchange channel, and the lower end is communicated with the corresponding waterway interface; and / or, the plurality of flow paths further include an inlet water flow path, the plurality of waterway interfaces include a fifth interface and a sixth interface, and both ends of the inlet water flow path are respectively connected with the fifth interface and the sixth interface.

17. A dishwasher, characterized in that, Comprising: A water cup; The water tank assembly according to any one of claims 1-16, wherein the second heat exchange channel is communicated with the water cup.

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