Dishwasher

Abstract

The utility model discloses a dish washing machine. A washing box is provided with a washing space; the washing cup is provided with a first water inlet pipeline connected to the washing cup inlet; the water tank is provided with a first supply and discharge pipeline which is communicated with the water tank and the washing cup and is suitable for supplying water to the washing cup; the heat exchanger is provided with a heat circulation pipeline and a cold circulation pipeline which can realize heat exchange, the heat circulation pipeline is communicated with the washing cup, and the cold circulation pipeline is communicated with the water tank; one end of the main water inlet pipeline is connected with a water source; the reversing assembly is connected with the water softener and selectively supplies softened water to the water tank and the washing cup. Therefore, the energy consumption of the dish-washing machine can be effectively reduced, and on the premise that the dish-washing machine is more compact in structure, higher in integration degree, lower in assembly difficulty and lower in cost, the probability that the dish-washing machine is blocked can be reduced, the working stability and reliability of the dish-washing machine can be improved, and the service life of the dish-washing machine can be prolonged.

Description

Technical Field

[0001] The utility model relates to the field of household electrical appliances, in particular to a dishwasher. Background Art

[0002] Dishwashers are gaining popularity due to their convenience. Water from the outside source must be softened by a water softener before being supplied to the dishwasher. During this process, the softened water has multiple supply routes. However, existing dishwashers often have unreasonable supply routes, which can easily lead to scale buildup and reduce both operational stability and service life. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a dishwasher having a rationally arranged soft water supply route, a lower probability of scale-induced clogging, greater operational stability, and a longer service life.

[0004] The present application provides a dishwasher, comprising: a washing box, a washing cup, a water tank, a heat exchanger, a main water inlet pipe, and a reversing assembly, wherein the washing box has a washing space; the washing cup has a first water inlet pipe connected to the washing cup inlet; the water tank has a first supply and discharge pipe, the first supply and discharge pipe communicating with the water tank and the washing cup and being suitable for supplying water to the washing cup; the heat exchanger has a hot circulation pipe and a cold circulation pipe for heat exchange, the hot circulation pipe communicating with the washing cup, and the cold circulation pipe communicating with the water tank; one end of the main water inlet pipe is connected to a water source, and the other end is connected to a water softener; the reversing assembly is connected to the water softener and can selectively supply softened water to the water tank and the washing cup.

[0005] According to the dishwasher of the embodiment of the present application, waste heat recovery can be achieved by arranging a water tank in conjunction with a heat exchanger, and the water in the water tank can be heated to room temperature before cleaning operations. The energy consumption of heating to the required temperature is lower, which can effectively reduce the energy consumption of the dishwasher. In addition, the structure of the dishwasher is more compact, the degree of integration is higher, the assembly difficulty is lower, and the cost is lower. Under the premise, the probability of clogging of the dishwasher can be reduced, the working stability and reliability of the dishwasher can be improved, and the service life of the dishwasher can be extended.

[0006] According to some embodiments of the present application, the first supply and discharge pipeline is constructed as a single-tube structure, with one end connected to the reversing assembly and the other end connected to the water tank.

[0007] According to some embodiments of the present application, the first supply and discharge pipeline includes: a first pipeline and a second pipeline, the first pipeline is connected to the reversing assembly and the water tank, and the second pipeline is connected to the first water inlet pipeline.

[0008] According to some embodiments of the present application, the first supply and drainage pipeline includes: a first branch, a second branch, and a first main line connected to the first branch and the second branch, the first main line is connected to the first water inlet pipeline, the first branch is connected to the water outlet of the water tank, and the second branch is connected to the water inlet of the water tank.

[0009] According to some embodiments of the present application, the reversing assembly is constructed as a reversing valve, which has a first outlet and a second outlet. The reversing assembly is connected to the water softener, and the first outlet is connected to the first water inlet pipe, and the second outlet is connected to the first supply and discharge pipe.

[0010] According to some embodiments of the present application, the reversing assembly includes: a second valve and a third valve, the second valve is arranged in the first supply and discharge pipeline, and the third valve is arranged in the first water inlet pipeline, so that the first supply and discharge pipeline can be selectively opened or closed by the second valve, and the first water inlet pipeline can be selectively opened or closed by the third valve.

[0011] According to some embodiments of the present application, the rinsing sequence includes: a first rinse sequence and a second rinse sequence. In the first rinse sequence, the third valve is opened and the second valve is closed, and the reversing component controls the main water supply pipeline to supply water to the washing cup. In the second rinse sequence, the third valve is opened and the second valve is opened, and the water tank supplies water to the washing cup.

[0012] According to some embodiments of the present application, the water tank includes a first water tank and a second water tank. During the first rinse sequence, the first water tank supplies water to the wash cup, and during the second rinse sequence, the second water tank supplies water to the wash cup.

[0013] According to some embodiments of the present application, the dishwasher includes a washing pump, which is connected to the washing cup. The thermal circulation pipeline has a thermal circulation inlet pipe section and a thermal circulation outlet pipe section. One end of the thermal circulation inlet pipe section is connected to the outlet end of the washing pump, and the other end is connected to the hot end inlet of the heat exchanger. One end of the thermal circulation outlet pipe section is connected to the hot end outlet of the heat exchanger, and the other end is connected to the washing cup inlet.

[0014] According to some embodiments of the present application, the cold circulation pipeline includes: a cold circulation inlet pipe section and a cold circulation outlet pipe section, one end of the cold circulation inlet pipe section is connected to the water tank, and the other end is connected to the cold end inlet of the heat exchanger, one end of the cold circulation outlet pipe section is connected to the cold end outlet of the heat exchanger, and the other end of the cold circulation outlet pipe section is connected to the water tank, and the cold circulation pipeline also includes: a first water pump, which is arranged in the cold circulation inlet pipe section or the cold circulation outlet pipe section.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a schematic diagram of a dishwasher according to a first embodiment of the present application;

[0018] Figure 2 is a schematic diagram of a dishwasher according to a second embodiment of the present application;

[0019] Figure 3 is a schematic diagram of a dishwasher according to the third embodiment of the present application.

[0020] Reference numerals:

[0021] Dishwasher 100,

[0022] Washing box 101, washing space 1011, spray arm 1012, washing cup 102, water tank 103, overflow pressure relief hole 1031, heat exchanger 104, water softener 105,

[0023] First water inlet pipeline 1, third valve 2, first drainage pipeline 3, washing pump 4, water diversion valve 5, first supply and drainage pipeline 6, first branch 61, second branch 62, first main line 63, first pipe 64, second pipe 65, second valve 7, reversing valve 9, hot cycle inlet pipe section 10, hot cycle outlet pipe section 11, first valve 12, cold cycle inlet pipe section 13, cold cycle outlet pipe section 14, first water pump 15, main water inlet pipeline 16, fourth valve 17, flow meter 18, anti-siphon structure 191, one-way valve 192, main drainage pipeline 20, third pump 21, drainage anti-siphon structure 22. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0026] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0028] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0029] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation to the present invention.

[0031] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact via another feature therebetween.

[0032] In the description of the present invention, a first feature “above”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0033] The term "plurality" used in this application refers to two or more (including two).

[0034] Dishwashers, owing to their health and convenience, have rapidly become one of the fastest-growing categories of home appliances. As the market expands, the barriers to entry in the dishwasher industry are also gradually rising. The European Union adopted the latest standard, 2009 / 125 / EC, in 2019, which came into effect in January 2021. The new standard changes energy efficiency classes from A+++, A++, A+, A, and B to A, B, C, D, E, F, and G. Furthermore, dishwashers previously rated A+++ will only meet D requirements under the new standard. my country has also made similar revisions to its dishwasher energy efficiency index (EEI), drawing on EU standards for its definition and calculation method. The original standard, B / T1520-2013, adds indicators such as the cleaning index, drying index, energy efficiency index, and annual electricity consumption, creating a clearer classification of energy efficiency classes. The new standard changes energy efficiency classes from A+, A, B, C, and D to 1, 2, 3, 4, and 5. Dishwashers previously rated A+ by the national standard will only reach Level 3 under the new standard, and dishwashers rated below Level D will be eliminated. However, compared to the new EU standards, especially in terms of energy efficiency, the domestic Level 1 standard is only equivalent to Level D under the new EU standards, leaving 50% room for improvement from the A standard.

[0035] The workflow of a spray-type dishwasher in ECO mode is as follows: a predetermined amount of treated water is added to the water cup through the water inlet. The circulation pump, spray piping, and heating element complete the spray cycle and temperature increase process. The dishes are then repeatedly rinsed and rinsed with a dishwasher-specific detergent. After two rinses, the dishes are dried using the waste heat from the dishes and the dishwasher itself or an external heat source. An analysis of the energy consumption in the above process shows that the main energy consumption of a spray-type dishwasher comes from a combination of factors such as detergent type, circulating water temperature, circulating water volume, and washing time. For a spray-type dishwasher operating in ECO mode, water heating energy accounts for approximately 70% of its total energy consumption. Therefore, if a reasonable technical solution can be used to increase the inlet water temperature and recycle waste heat from different stages of the dishwasher, it will have a significant impact on reducing the energy consumption of the entire dishwasher.

[0036] Reference below Figure 1-Figure 3 A dishwasher 100 according to an embodiment of the present invention is described.

[0037] like Figure 1 、 Figure 2 and Figure 3 As shown, the dishwasher 100 according to the embodiment of the first aspect of the present application includes: a washing box 101, a washing cup 102, a water tank 103, a heat exchanger 104, a main water inlet pipe 16 and a reversing component.

[0038] The washing cup 102 is used to temporarily store water and filter the washing water. During the use of the dishwasher 100, the water used in the washing process can be stored in the washing cup 102 to facilitate the centralized discharge of washing wastewater and the collection of residues generated during the washing process. The water tank 103 has a water storage space that can be used to store water. The water storage can facilitate the operation of the dishwasher 100, thereby improving the washing efficiency and effect. The washing box 101 has a washing space 1011 on which dishes to be washed can be placed.

[0039] Among them, the washing box 101 has a washing space 1011, the washing cup 102 has a first water inlet pipe 1 connected to the inlet of the washing cup 102 and a first drain pipe 3 connected to the outlet of the washing cup 102, the first drain pipe 3 is connected to the washing space 1011, and is suitable for supplying water to the washing space 1011, the water tank 103 has a first supply and drainage pipe 6, the first supply and drainage pipe 6 connects the water 103 and the washing cup 102, that is, the first supply and drainage pipe 6 is selectively connected to the first water inlet pipe 1 and is suitable for supplying water to the washing cup 102, one end of the total water inlet pipe 16 is connected to the water source, and the other end is connected to the water softener 105, the water softener 105 is connected to the first supply and drainage pipe 6 and the first water inlet pipe 1 to selectively supply softened water to the first water tank 103 and the washing cup 102 of the water tank 103.

[0040] It should be pointed out that in the embodiment of the present application, the water supply pipe and the water inlet pipe are used for water supply, and the drainage pipe is used for drainage, and the supply and drainage pipes can both supply water and drain water, such as: water can be supplied to the washing cup 102 through the first water inlet pipe 1, water can be supplied to the washing box 101 through the first drainage pipe 3, water can be supplied to the water tank 103 through the first supply and drainage pipe 6, or water in the water tank 103 can be discharged through the first supply and drainage pipe 6.

[0041] Specifically, one end of the main water inlet pipe 16 is connected to a water source (such as a city water interface, a faucet, etc.), and a water softener 105 is provided at the other end of the main water inlet pipe 16. The water softener 105 can soften hard water to improve scale accumulation during the washing process of the dishwasher 100, thereby extending the service life and working reliability of the dishwasher 100. The softened water can be supplied to the water tank 103 through the first supply and drainage pipe 6 to fill the water tank 103, or it can be directly supplied to the first water inlet pipe 1 to realize direct water supply to the washing cup 102, and the water in the water tank 103 can be supplied to the washing cup 102 through the first supply and drainage pipe 6 and the first water inlet pipe 1.

[0042] It should be pointed out that the present application further provides a reversing component, and the water softened by the water softener 105 can be selectively supplied to the water tank 103 or the washing cup 102 through the reversing component, and the water tank 103 can be one or more. When there are multiple water tanks 103, multiple water tanks 103 can be connected in parallel and connected to the same outlet of the reversing component, such as multiple first supply and discharge pipes 6 in parallel.

[0043] It can be understood that by providing a reversing assembly and cooperating with the water softener 105, both the washing cup 102 and the water tank 103 can be supplied with softened water, which can reduce the probability of scale and even blockage in the dishwasher 100, and the first supply and discharge pipe 6 for supplying to the water tank 103 and the first water inlet pipe 1 for supplying to the washing cup 102 can be connected to the reversing assembly, which can simplify the pipeline structure, reduce the control difficulty, and improve the working stability.

[0044] According to the dishwasher 100 of the embodiment of the present application, waste heat recovery can be achieved by providing a water tank 103 in conjunction with a heat exchanger 104, and the water in the water tank 103 can be heated to room temperature before cleaning. The energy consumption of heating to the required temperature is lower, which can effectively reduce the energy consumption of the dishwasher 100. Moreover, under the premise that the structure of the dishwasher 100 is more compact, the degree of integration is higher, the assembly difficulty is lower, and the cost is lower, the probability of blockage of the dishwasher 100 can be reduced, the working stability and reliability of the dishwasher 100 can be improved, and the service life of the dishwasher 100 can be extended.

[0045] Please combine Figure 1 、 Figure 2 and Figure 3 As shown, the structure of the first supply and exhaust pipeline 6 in the embodiment of the present application can be a single-pipe structure, a double-pipe structure, or a structure of one main line and two branches.

[0046] like Figure 1 As shown, in the first embodiment, the first supply and discharge pipeline 6 is constructed as a single-tube structure, with one end connected to the reversing assembly and the other end connected to the water tank 103 .

[0047] like Figure 2 As shown, in the second embodiment, the first supply and discharge pipeline 6 includes: a first pipeline 64 and a second pipeline 65, the first pipeline 61 is connected to the reversing component and the water tank 103, and the second pipeline 65 is connected to the first water inlet pipeline 1.

[0048] like Figure 3 As shown, in the third embodiment, the first supply and discharge pipeline 6 includes: a first branch 61, a second branch 62 and a first main channel 63 connected to the first branch 61 and the second branch 62. The first main channel 63 is selectively connected to the first water inlet pipeline 1 and is suitable for supplying water to the washing cup 102. The first branch 61 is connected to the water outlet of the water tank 103, and the second branch 62 is connected to the water outlet of the water tank 103.

[0049] In summary, in the first embodiment, one end of the single-tube structure is connected to the reversing assembly, and the other end is connected to the water tank 103, and the end of the single-tube structure connected to the reversing assembly can be simultaneously connected to the first water supply pipeline 1, so that the first supply and drainage pipeline 6 can inject softened water from the water softener 105 into the water tank 103, and can supply the water in the water tank 103 to the first water supply pipeline 1. In the second embodiment, one end of the first pipeline 64 is connected to the water softener 105, and the other end is connected to the water tank 103 to supply softened water to the water tank 103, and the two ends of the second pipeline 65 are respectively connected to the water tank 103 and the first water supply pipeline 1 to supply the water in the water tank 103 to the first water supply pipeline 1. In the third embodiment, the first branch 61 is used to supply water to the first water supply pipeline 1, and the second branch 62 is used to inject water into the water tank 103.

[0050] Furthermore, it should be pointed out that Figure 1 and Figure 2 As shown, in some embodiments, the reversing assembly can be constructed as a reversing valve 9 , and in other embodiments, the reversing assembly can be composed of multiple switch valves, such as a second valve 7 and a third valve 2 .

[0051] Specifically, in Figure 3 In the third embodiment shown, the reversing assembly is constructed as a reversing valve 9, which has a first outlet and a second outlet. The reversing assembly is connected to the water softener 106, and the first outlet is connected to the first water inlet pipe 1, and the second outlet is connected to the first supply and discharge pipe 6; Figure 1The first embodiment shown and Figure 2 In the second embodiment shown, the reversing assembly includes: a second valve 7 and a third valve 2, the second valve is arranged in the first supply and discharge pipeline, and the third valve is arranged in the first water inlet pipeline, so that the first supply and discharge pipeline can be selectively opened or closed by the second valve, and the first water inlet pipeline can be selectively opened or closed by the third valve.

[0052] Thus, the softened water can be selectively controlled by the reversing assembly to be supplied to the water tank 103 or to the washing cup 102, so as to simplify the piping structure, reduce the control difficulty, and improve the user experience.

[0053] like Figure 1 As shown, according to some embodiments of the present application, the first drainage pipe 3 has a washing pump 4 and a water diversion valve 5. The washing pump 4 is suitable for pressurizing the water flowing out of the washing cup 102, and the water diversion valve 5 is suitable for diverting the pressurized water and delivering it to multiple spray arms 1012 in the washing space 1011 respectively.

[0054] Specifically, there can be multiple spray arms 1012 in the washing space 1011, such as an upper spray arm 1012, a lower spray arm 1012, a middle spray arm 1012, etc., and the pressurized water provided by the washing pump 4 can be supplied to the upper spray arm 1012, the lower spray arm 1012 and the middle spray arm 1012 through the water diversion valve 5, so as to fully clean the pots, dishes, etc. to be cleaned in the washing space 1011 and improve the flushing effect.

[0055] It is understandable that in some embodiments, the washing pump 4 can also integrate a heating function, which can heat water to the required temperature of the dishwasher 100 for cleaning, and the washing pump 4 can also pump water into the heat exchanger 104, so that the high-temperature water discharged from the washing cup 102 passes through the heat cycle inlet pipe section 10 through the heat exchanger 104 and exchanges heat with the water tank 103 to achieve waste heat recovery. At the same time, the heat required to heat the water in the water tank 103 to the required temperature is less, and the energy consumption of the washing pump 4 can be lower.

[0056] like Figure 1 As shown, the dishwasher 100 has a heat exchanger 104, which has a hot circulation pipeline and a cold circulation pipeline for realizing heat exchange. The hot circulation pipeline is connected to the washing cup 102, and the cold circulation pipeline is connected to the water tank 103. The dishwasher 100 has a washing sequence and a rinsing sequence. Before the end of the washing sequence, the heat exchanger 104 is turned on to heat the water in the water tank 103. During the rinsing sequence, the first supply and drainage pipeline 6 supplies water to the washing cup 102.

[0057] That is to say, the water tank 103 is connected to the cold circulation pipeline, and the washing cup 102 is connected to the hot circulation pipeline. The water in the washing cup 102 after washing can enter the hot end of the heat exchanger 104, and the corresponding cold water in the water tank 103 can enter the cold end of the heat exchanger 104, and heat exchange is performed between the two to recycle the waste heat and residual heat from washing to achieve the technical purpose of energy saving. At the same time, the water in the water tank 103 can dissipate heat with the environment and gradually rise to the ambient temperature. The water in the water tank 103 that is not lower than the ambient temperature is supplied to the washing cup 102 for washing, which can improve the washing effect. The energy consumption of heating the water in the water tank 103 to the washing temperature required by the dishwasher 100 is also lower, which can further improve the energy saving effect.

[0058] At the same time, it should be pointed out that the provision of the anti-siphon structure 191 or the one-way valve 192 can avoid backflow in the water tank 103 after the water supply to the water tank 103 is completed, and the first supply and drainage pipe 6 can realize the water intake and drainage of the water tank 103, and the first water inlet pipe 1 is connected to the first supply and drainage pipe 6 and the water softener 105 at the same time. At least part of the two flow paths for supplying water to the washing cup 102 can overlap, that is, at least part of the pipelines of the dishwasher 100 can be reused, which can reduce the layout of the pipelines and the materials used, reduce the number of pipelines, reduce costs, and make the structure of the dishwasher 100 more compact, improve the degree of integration, and reduce the difficulty of assembly.

[0059] It is understood that dishwasher 100 includes at least a wash phase and a rinse phase. During the wash phase, water from water tank 103 or water softener 105 is transferred to the wash cup 102 of dishwasher 100 via wash cup 102 and may be heated to improve the cleaning effect of kitchenware in washing space 1011. During the hot rinse phase, clean water from water tank 103 may be used to rinse kitchenware to improve cleaning. The water used in the hot rinse phase is heated by heat exchange with the high-temperature water from the main wash phase, thereby improving the rinsing effect of kitchenware, shortening the rinse time, and reducing energy consumption of dishwasher 100. The clean water from water tank 103 is used to rinse kitchenware during the cold rinse phase. The water temperature in the cold rinse phase is consistent with the ambient temperature, which also improves the cold rinse effect. Of course, the water in water tank 103 is at ambient temperature during the wash phase, so the energy required to heat it to the required temperature is lower, further reducing energy consumption.

[0060] It can be understood that, in some embodiments, one end of the heat circulation pipeline is connected to the outlet of the washing cup 102, and the other end of the heat circulation pipeline is connected to the inlet of the washing cup 102, so that the sewage that has completed the waste heat recovery can be returned to the washing space 1011. In other embodiments, one end of the heat circulation pipeline is connected to the outlet of the washing cup 102, and the other end of the heat circulation pipeline is connected to the opening on the inner tank, so that the sewage that has completed the preheating recovery can be returned to the washing space 1011 through the opening on the inner tank.

[0061] According to some embodiments of the present application, the dishwasher 100 has a rinsing sequence, which may include: a primary rinsing sequence and a secondary rinsing sequence. During the primary rinsing sequence, the third valve 2 is opened and the second valve 7 is closed, and the first supply and drainage pipe 6 supplies water to the washing cup 102. During the secondary rinsing sequence, the third valve 2 is opened and the second valve 7 is closed, and the water tank 103 supplies water to the washing cup 102.

[0062] Of course, the structure of the dishwasher 100 of the embodiment of the present application is not limited to this. In other embodiments, there are multiple water tanks 102, such as the water tank 103 includes a first water tank and a second water tank. In the first rinse sequence, the first water tank supplies water to the washing cup 102, and in the second rinse sequence, the second water tank supplies water to the washing cup 102.

[0063] Specifically, the dishwasher 100 includes at least a washing sequence, a first rinsing sequence, a second rinsing sequence, and a drying sequence.

[0064] Among them, it may be necessary to add water to the water tank 103 first in the washing sequence, the single rinse sequence and the double rinse sequence, and the water adding control process is to open the fourth valve 17, and the water flows through the fourth valve 17, the anti-siphon structure 19, and the flow meter 18 and then enters the water softener 105. The softened water in the water softener 105 can further enter the water tank 103 by opening the second valve 7 and flowing through the first supply and discharge pipe 6. After the flow meter 18 reaches the expected reading, the fourth valve 17 is closed to complete the water adding process.

[0065] During the washing sequence, the third valve 2 and the second valve 7 are opened, and the water in the water tank 103 flows through the first supply and drainage pipe 6 and the first water inlet pipe 1 into the washing cup 102. Then the third valve 2 and the second valve 7 are closed, and the washing pump 4 and the water diversion valve 5 are opened. The water in the washing cup 102 is pressurized and supplied to the spray arm 1012 for washing.

[0066] During a rinse cycle, the fourth valve 17 and the third valve 2 are opened, and the water softened by the external water source softener 105 flows through the first water inlet pipe 1 into the washing cup 102. The washing pump 4 and the water diversion valve 5 are turned on, and water is directly supplied to the spray arm 1012 for a cold rinse operation.

[0067] In the secondary rinsing sequence, the third valve 2 and the second valve 7 are opened, and the water in the water tank 103 flows through the first supply and drainage pipe 6 and the first water inlet pipe 1 into the washing cup 102. After the washing pump 4 and the water diversion valve 5 are turned on, the water is supplied to the spray arm 1012 for hot rinsing operation.

[0068] During the drying sequence, the heat source and the fan on the washing box 101 start working to dry the clothes, and the water adding process is repeated to add water into the water tank 103.

[0069] It is understandable that during the operation of the dishwasher 100 , the washing sequence, the first rinsing sequence, and the second rinsing sequence can be performed in sequence to complete a complete process of the dishwasher 100 cleaning pots and dishes.

[0070] Furthermore, when the dishwasher 100 performs a washing sequence, the duration of the washing sequence is obtained in real time. Within a time threshold before the end of the washing sequence, the heat exchanger 104, the hot circulation flow line and the cold circulation flow line are turned on to heat the cleaning medium in the water tank 103. The time threshold is 3 minutes to 10 minutes.

[0071] That is to say, 3 to 10 minutes before the end of the washing sequence, the heat exchanger 104, the hot circulation pipeline, and the cold circulation pipeline are turned on to exchange heat between the hot water in the washing cup 102 and the washing space 1011 and the cold water in the water tank 103 to achieve waste heat recovery.

[0072] See also Figure 1 As shown, according to some embodiments of the present application, the washing pump 4 is connected to the washing cup 102, and the thermal circulation pipeline has a thermal circulation inlet pipe section 10 and a thermal circulation outlet pipe section 11. One end of the thermal circulation inlet pipe section 10 is connected to the outlet of the washing pump 4, and the other end is connected to the hot end inlet of the heat exchanger 104. One end of the thermal circulation outlet pipe section 11 is connected to the hot end outlet of the heat exchanger 104, and the other end is connected to the inlet of the washing cup 102.

[0073] That is to say, the washing pump 4, the heat circulation inlet pipe section 10, the heat circulation outlet pipe section 11, and the heat exchanger 104 form a closed-loop flow path. Under the power of the washing pump 4, water can flow into the heat exchanger 104 through the heat circulation inlet pipe section 10. After completing heat exchange in the heat exchanger 104, it can flow back to the washing cup 102 through the heat circulation outlet pipe section 11, so that the path of the heat circulation pipeline is shortened, the pipeline energy consumption is lower, and the energy recovery efficiency is higher.

[0074] According to some embodiments of the present application, the heat cycle pipeline further includes: a first valve 12 , which is disposed at the heat cycle inlet pipe section 10 or the heat cycle outlet pipe section 11 .

[0075] That is, in some embodiments, the first valve 12 is provided on the heat circulation inlet pipe section 10 to control the on-off of the heat circulation pipeline. In other embodiments, the first valve 12 is provided on the heat circulation outlet pipe section 11 to control the on-off of the heat circulation pipeline. The first valve 12 is constructed as an on-off valve and is suitable for electronically controlling the opening or closing of the heat circulation pipeline, which can reduce the control difficulty and improve the intelligence level of the dishwasher 100.

[0076] According to some embodiments of the present application, the cold circulation pipeline includes: a cold circulation inlet pipe section 13 and a cold circulation outlet pipe section 14, one end of the cold circulation inlet pipe section 13 is connected to the water tank 103, and the other end is connected to the cold end inlet of the heat exchanger 104, one end of the cold circulation outlet pipe section 14 is connected to the cold end outlet of the heat exchanger 104, and the other end of the cold circulation outlet pipe section 14 is connected to the water tank 103.

[0077] That is to say, the water tank 103, the cold cycle inlet pipe section 13, the cold cycle outlet pipe section 14 and the heat exchanger 104 form a closed-loop circulation path. The water in the water tank 103 enters the heat exchanger 104 through the cold cycle inlet pipe section 13, and after being fully heat-exchanged with the water flowing out of the washing pump 4 in the heat exchanger 104, it flows back to the water tank 103 through the cold cycle outlet pipe section 14 to heat the water in the water tank 103, recover waste heat, and reduce the energy consumption of the dishwasher 100.

[0078] It should be pointed out that an overflow pressure relief hole 1031 can be provided on the water tank 103. The overflow pressure relief hole 1031 is connected to the washing space 1011 through an opening on the inner tank, has an overflow effect, and can achieve pressure relief to reduce the water intake and drainage resistance of the water tank 103. A breathable structure can also be provided on the water tank 103 to achieve communication with the atmosphere, so as to reduce the resistance of the water tank 103 during water supply and drainage, and improve convenience of use.

[0079] According to some embodiments of the present application, the cold circulation pipeline further includes: a first water pump 15 , which is disposed in the cold circulation inlet pipe section 13 or the cold circulation outlet pipe section 14 .

[0080] Therefore, the first water pump 15 is used to drive the water in the water tank 103 to flow into the heat exchanger 104 through the cold circulation pipeline for sufficient heat exchange, and then return to the water tank 103.

[0081] According to some embodiments of the present application, the lift range of the first water pump 15 is 1.2 mm to 3.5 mm, and the flow range is 1.2 L / min to 7.2 L / min.

[0082] Exemplarily, the lift of the first water pump 15 is 1.2mm, 2mm, 3mm, 3.5mm, etc., and the flow range is 1.2L / min, 2L / min, 3L / min, 4L / min, 5L / min, 7.2L / min, etc., so that the lift and flow of the first water pump 15 are more reasonable, and the flow rate in the cold circulation pipeline can be avoided from being too slow or too fast, so that the heat exchange is more sufficient, the heat exchange efficiency is higher, the heat exchange effect is better, and the waste heat recovery efficiency is higher.

[0083] In a specific application, the lift of the first water pump 15 is any value among 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, and 3.5mm; the flow rate of the first water pump 15 is: 1.2L / min, 1.3L / min, 1.4L / min, 1.5L / min, 1.6L / min, 1.7L / min, 1.8L / min, 1.9L / min, 2L / min, 2.1L / min, 2.2L / m in, 2.3L / min, 2.4L / min, 2.5L / min, 2.6L / min, 2.7L / min, 2.8L / min, 2.9L / min, 3L / min, 3.1L / min, 3.2L / min , 3.3L / min, 3.4L / min, 3.5L / min, 3.6L / min, 3.7L / min, 3.8L / min, 3.9L / min, 4L / min, 4.1L / min, 4.2L / min, 4.3L / min, 4.4L / min, 4.5L / min, 4.6L / min, 4.7L / min, 4.8L / min, 4.9L / min, 5L / min, 5.1L / min, 5.2L / min, 5. 3L / min, 5.4L / min, 5.5L / min, 5.6L / min, 5.7L / min, 5.8L / min, 5.9L / min, 6L / min, 6.1L / min, 6.2L / min, 6.3L / min, 6.4L / min, 6.5L / min, 6.6L / min, 6.7L / min, 6.8L / min, 6.9L / min, 7L / min, 7.1L / min, 7.2L / min.

[0084] like Figure 1As shown, according to some embodiments of the present application, the first supply and discharge pipeline 6 is provided with a second valve 7 to control the selective opening and closing of the first supply and discharge pipeline 6, and the first water inlet pipeline 1 is provided with a third valve 2 to control the selective opening and closing of the first water inlet pipeline 1.

[0085] Specifically, the second valve 7 can be opened when the water tank 103 supplies water to the first water inlet pipe 1, or when the main water inlet pipe 16 supplies water to the water tank 103, and the third valve 2 can control the opening and closing of the first water inlet pipe 1.

[0086] It is understandable that the second valve 7 and the third valve 2 can both be constructed as solenoid valves. Through low-pressure control, not only can the intelligence level of the dishwasher 100 be improved, but the first supply and discharge pipeline 6 and the cold circulation pipeline are also independently arranged. The water inlet of the water tank 103 and the water circulation of the cold circulation pipeline will not interfere with each other, which can improve the working stability and reliability of the dishwasher 100.

[0087] According to some embodiments of the present application, the main water inlet pipeline 16 includes a fourth valve 17, a flow meter 18 and an anti-siphon structure 19 connected in sequence, and the flow meter 18 and the anti-siphon structure 191 (or a one-way valve 192) are integrated in the water tank 103.

[0088] Specifically, when the fourth valve 17 is opened, the external water source can be connected to the water softener 105. After the water softener 105 softens the hard water, it is supplied to the water tank 103 or the washing cup 102 respectively. The flow meter 18 can obtain the supplied water volume and record the water volume based on the flow meter 18 to control the opening or closing of the first valve 12, the second valve 7, the third valve 2, and the fourth valve 17 to complete the water addition. The anti-siphon structure 191 and the flow meter 18 can be integrated in the water tank 103, which can further reduce the space occupied by the dishwasher 100, make the layout of the dishwasher 100 more compact, reduce the difficulty of assembly, and improve the degree of integration.

[0089] like Figure 1 As shown, according to some embodiments of the present application, the dishwasher 100 further includes a main drain line 20, one end of which is connected to the wash cup 102, and the other end of which is used to drain the washing wastewater. Thus, wastewater from the wash cup 102 and the washing space 1011 after the washing process is completed can be discharged through the main drain line 20, such as wastewater after the washing process, wastewater after the hot rinse process, and wastewater after the cold rinse process. According to some embodiments of the present application, the main drain line 20 includes a third pump 21 and a drain anti-siphon structure 19, which is integrated into the water tank 103.

[0090] Specifically, the third pump 21 is used to pump out the sewage in the washing cup 102 and the washing space 1011 to increase the sewage discharge speed, and the drainage anti-siphon structure 22 can prevent the sewage from flowing back into the washing cup 102 or the washing space 1011, ensuring that there is no residue in the washing cup 102 and the washing space 1011, so as to avoid the occurrence of odor in the dishwasher 100 and improve the user experience. At the same time, the drainage anti-siphon structure 22 is integrated on the water tank 103, which can also improve the degree of integration of the dishwasher 100 and improve the space occupancy of the dishwasher 100.

[0091] According to some embodiments of the present application, the water tank 103 is disposed on a side panel of the washing box 101 , the washing cup 102 is disposed on a bottom panel of the washing box 101 , and the water tank 103 has an overflow pressure relief hole 1031 communicating with the washing space 1011 .

[0092] That is, the washing box 101 is generally a cubic or cube-shaped structure, with a washing space 1011 therein for placing pots, dishes, etc. A water tank 103 is disposed on one of the left and right side panels of the washing box 101, and a washing cup 102 is disposed at the bottom. This can improve the space occupied by the dishwasher 100 and reduce the difficulty of integration. According to some embodiments of the present application, the volume of the water tank 103 is 2.4L to 4.2L.

[0093] Exemplarily, the volume of the water tank 103 is 2.4L, 3L, 4L, 4.2L, etc. The volume of the water tank 103 is more reasonable. During each washing process, the water in the water tank 103 can enter the washing cup 102 with heat not lower than the ambient temperature, which can improve the washing effect while effectively reducing energy consumption.

[0094] It should be pointed out that if the volume of the water tank 103 is too large, the waste heat recovery will not have a significant effect on heating the water in the water tank 103, resulting in still high energy consumption in the subsequent heating process. If the volume of the water tank 103 is too small, the waste heat cannot be fully utilized, the waste heat recovery effect is poor, and the water volume is too low, so the energy consumption in the subsequent heating process is still high.

[0095] In a specific application, the volume of the water tank 103 is any value among 2.4L, 2.5L, 2.6L, 2.7L, 2.8L, 2.9L, 3L, 3.1L, 3.2L, 3.3L, 3.4L, 3.5L, 3.6L, 3.7L, 3.8L, 3.9L, 4L, 4.1L, and 4.2L.

[0096] According to some embodiments of the present application, the heat exchanger 104 is configured as a microchannel heat exchanger 104 , and the equivalent diameter of each microchannel ranges from 0.8 mm to 5 mm.

[0097] Specifically, the equivalent diameters of the microchannels are 0.8 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, and so on. When the equivalent diameters of the microchannels are within this range, heat exchange between the microchannels and the surrounding area is more efficient. The microchannels can be constructed as flat tubes with a diameter greater than or equal to 0.8 mm and less than or equal to 5 mm. This significantly improves heat exchange efficiency and reduces the volume, thereby reducing the space occupied by the heat exchanger 104 within the dishwasher 100. Furthermore, limiting the size range prevents clogging of the microchannels.

[0098] In a specific application, the equivalent diameter of the microchannel is any one of 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, 3.5mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm, 4mm, 4.1mm, 4.2mm, 4.3mm, 4.4mm, 4.5mm, 4.6mm, 4.7mm, 4.8mm, 4.9mm, and 5mm.

[0099] According to some embodiments of the present application, the heat exchanger 104 has a length dimension of 150 mm to 280 mm, a width dimension of 50 mm to 200 mm, and a height dimension of 6 mm to 30 mm.

[0100] It can be understood that multiple microchannels form the heat exchanger 104, which increases the contact area between the cold-end water and the hot-end water in the heat exchanger 104, thereby improving the heat exchange efficiency of the heat exchanger 104. At the same time, based on the smaller size of the microchannel structure, the volume of the heat exchanger 104 is reduced, thereby reducing the space occupied by the heat exchanger 104.

[0101] Other structures and operations of the dishwasher 100 according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0102] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0103] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A dishwasher, characterized in that: include: a washing box having a washing space; a washing cup having a first water inlet pipe connected to an inlet of the washing cup; a water tank having a first supply and discharge pipe, the first supply and discharge pipe communicating with the water tank and the washing cup and being adapted to supply water to the washing cup; A main water inlet pipe, one end of which is connected to a water source and the other end of which is connected to a water softener; A reversing assembly is connected to the water softener and can selectively supply softened water to the water tank and the washing cup.

2. The dishwasher according to claim 1, characterized in that The first supply and discharge pipeline is constructed as a single-tube structure, with one end connected to the reversing component and the other end connected to the water tank.

3. The dishwasher according to claim 1, wherein The first supply and discharge pipeline includes: a first pipeline and a second pipeline, the first pipeline is connected to the reversing component and the water tank, and the second pipeline is connected to the first water inlet pipeline.

4. The dishwasher according to claim 1, wherein The first supply and drainage pipeline includes: a first branch, a second branch, and a first main line connected to the first branch and the second branch. The first main line is connected to the first water inlet pipeline, the first branch is connected to the water outlet of the water tank, and the second branch is connected to the water inlet of the water tank.

5. The dishwasher according to claim 1, wherein: The reversing assembly is configured as a reversing valve having a first outlet and a second outlet. The reversing assembly is communicated with the water softener, and the first outlet is communicated with the first water inlet pipe, while the second outlet is communicated with the first supply and discharge pipe.

6. The dishwasher according to claim 1, characterized in that The reversing assembly includes: a second valve and a third valve, the second valve is arranged on the first supply and discharge pipeline, and the third valve is arranged on the first water inlet pipeline, so that the first supply and discharge pipeline can be selectively opened or closed by the second valve, and the first water inlet pipeline can be selectively opened or closed by the third valve.

7. The dishwasher according to claim 6, characterized in that The rinsing sequence includes: a first rinse sequence and a second rinse sequence. In the first rinse sequence, the third valve is opened and the second valve is closed, and the reversing component controls the main water supply pipeline to supply water to the washing cup; in the second rinse sequence, the third valve is opened and the second valve is opened, and the water tank supplies water to the washing cup.

8. The dishwasher according to claim 7, characterized in that The water tank includes a first water tank and a second water tank. During the first rinsing sequence, the first water tank supplies water to the washing cup. During the second rinsing sequence, the second water tank supplies water to the washing cup.

9. The dishwasher according to claim 7, characterized in that The heat exchanger comprises a washing pump connected to the washing cup, a heat circulation pipeline having a heat circulation inlet pipe section and a heat circulation outlet pipe section, one end of the heat circulation inlet pipe section is connected to the outlet end of the washing pump, and the other end is connected to the hot end inlet of the heat exchanger, one end of the heat circulation outlet pipe section is connected to the hot end outlet of the heat exchanger, and the other end is connected to the inlet of the washing cup.

10. The dishwasher according to claim 1, wherein The cold circulation pipeline includes: a cold circulation inlet pipe section and a cold circulation outlet pipe section, one end of the cold circulation inlet pipe section is connected to the water tank, and the other end is connected to the cold end inlet of the heat exchanger, one end of the cold circulation outlet pipe section is connected to the cold end outlet of the heat exchanger, and the other end of the cold circulation outlet pipe section is connected to the water tank, and the cold circulation pipeline also includes: a first water pump, which is arranged in the cold circulation inlet pipe section or the cold circulation outlet pipe section.

Images