Dishwasher

Abstract

The utility model discloses a dish washing machine. A washing cup is arranged below a washing box; the first water tank is provided with a first supply and discharge pipeline which is suitable for supplying water to the washing cup; the second water tank is provided with a second supply and discharge pipeline which 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 achieve heat exchange, one end of the heat circulation pipeline is communicated with the washing cup, the other end of the heat circulation pipeline is communicated with the washing space, and the cold circulation pipeline is communicated with the second water tank. Therefore, the first water tank and the second water tank are arranged, the second water tank is matched with the heat exchanger to achieve waste heat recovery, water in the first water tank and the second water tank can be heated to the room temperature for cleaning operation, energy consumption for heating the water to the temperature required by the dish-washing machine is lower, and energy consumption of the dish-washing machine can be effectively reduced; and the dish washing machine is more compact in structure, higher in integration degree, lower in assembly difficulty and lower in cost.

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. To reduce energy consumption, most manufacturers are adding heat exchangers to recover waste heat during operation. However, these technologies present technical challenges such as large size, complex structure, and difficulty in installation. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, one object of the present invention is to provide a dishwasher with a small overall size, a simple structure, and low installation difficulty.

[0004] The present application discloses a dishwasher, comprising: a washing box, a washing cup, a first water tank, a second water tank and a heat exchanger, wherein the washing box has a washing space; the washing cup is arranged below the washing box; the first water tank has a first supply and discharge pipe, the first supply and discharge pipe connects the first water tank and the washing cup and is suitable for supplying water to the washing cup; the second water tank has a second supply and discharge pipe, the second supply and discharge pipe connects the second water tank and the washing cup and is suitable for supplying water to the washing cup; the heat exchanger has a hot circulation pipe and a cold circulation pipe for realizing heat exchange, one end of the hot circulation pipe is connected to the washing cup, the other end of the hot circulation pipe is connected to the washing space, and the cold circulation pipe is connected to the second water tank.

[0005] According to the dishwasher of the embodiment of the present application, on the one hand, a first water tank and a second water tank can be provided, and the second water tank can cooperate with a heat exchanger to realize waste heat recovery, and the water in the first water tank and the second water tank can be heated to room temperature before cleaning operation. The energy consumption of heating to the temperature required by the dishwasher 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.

[0006] According to some embodiments of the present application, the dishwasher includes at least a main wash sequence and a rinsing sequence. Before the main wash sequence ends, the heat exchanger is turned on to heat the water in the second water tank. During the rinsing sequence, the water in the second water tank is supplied to the washing cup.

[0007] Furthermore, the rinsing sequence includes at least a first rinsing sequence and a second rinsing sequence. During the first rinsing sequence, water in the first water tank is supplied to the washing cup; during the second rinsing sequence, water in the second water tank is supplied to the washing cup.

[0008] According to some embodiments of the present application, the dishwasher further includes: a first water inlet pipe, one end of the first water inlet pipe being connected to the inlet of the washing cup, and the other end of the first water inlet pipe being connected to the first supply and drainage pipe and the second supply and drainage pipe, so that the first water tank and the second water tank are suitable for supplying water to the washing cup.

[0009] Furthermore, the dishwasher also includes: a main water inlet pipe, one end of which is connected to a water source, and the other end is connected to a water softener. The water softener is respectively connected to the first supply and drainage pipe, the second supply and drainage pipe, and the first water inlet pipe to selectively supply softened water to the first water tank, the second water tank, and the washing cup.

[0010] Furthermore, the first supply and drainage pipeline is provided with a second valve to selectively control the opening or closing of the first supply and drainage pipeline, the second supply and drainage pipeline is provided with a third valve to selectively control the opening or closing of the second supply and drainage pipeline, and the first water inlet pipeline is provided with a fourth valve to selectively control the opening or closing of the first water inlet pipeline.

[0011] In some embodiments, when the second valve and the fourth valve are opened, the water in the first water tank is supplied to the washing cup through the first supply and discharge pipe; when the third valve and the fourth valve are opened, the water in the second water tank is supplied to the washing cup through the second supply and discharge pipe; when the second valve and the third valve are closed and the fourth valve is opened, the main water inlet pipe supplies water to the washing cup.

[0012] 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.

[0013] Furthermore, the heat cycle pipeline further includes: a first valve, which is arranged at the heat cycle inlet pipe section or the heat cycle outlet pipe section.

[0014] In some embodiments, the cold circulation pipeline includes: a cold circulation inlet pipe section and a cold circulation outlet pipe section, and a first water pump. One end of the cold circulation inlet pipe section is connected to the second 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 second water tank. The first water pump is arranged in the cold circulation inlet pipe section or the cold circulation outlet pipe section.

[0015] According to some embodiments of the present application, the washing box has an inner liner, an inner liner interface is provided on the inner liner, and the other end of the heat circulation outlet pipe section is connected to the inner liner interface.

[0016] Furthermore, the main water inlet pipeline includes a fifth valve, a flow meter and the anti-siphon structure or the one-way valve which are connected in sequence, and the flow meter, the anti-siphon structure or the one-way valve are integrated into the first water tank.

[0017] According to some embodiments of the present application, the first water tank and the second water tank are arranged on two symmetrical side plates of the washing box, the washing cup is arranged on the bottom plate of the washing box, and the first water tank has an overflow pressure relief hole connected to the washing space.

[0018] In some embodiments, 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 supply pipeline and is suitable for supplying washing medium to the washing cup, the second branch is connected to the water outlet of the first water tank, and the first branch is connected to the water inlet of the first water tank.

[0019] 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

[0020] 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:

[0021] Figure 1 is a structural schematic diagram of a dishwasher according to a first embodiment of the present application;

[0022] Figure 2 is a structural schematic diagram of a dishwasher according to a second embodiment of the present application;

[0023] Figure 3 3 is a schematic structural diagram of a dishwasher according to the third embodiment of the present application.

[0024] Reference numerals:

[0025] Dishwasher 100,

[0026] Washing box 101, washing space 1011, spray arm 1012, washing cup 102, first water tank 103, overflow pressure relief hole 1031, second water tank 104, heat exchanger 105, water softener 106,

[0027] First water inlet pipeline 1, fourth valve 2, first water supply pipeline 3, washing pump 4, water diverter valve 5, first supply and drainage pipeline 6, first branch 61, second branch 62, first main pipeline 63, second valve 7, second supply and drainage pipeline 8, third 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, fifth valve 17, flow meter 18, anti-siphon structure 191, main drainage pipeline 20, third pump 21, drainage anti-siphon structure 22. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] The term "plurality" used in this application refers to two or more (including two).

[0038] 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.

[0039] 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.

[0040] Reference below Figure 1-Figure 3 A dishwasher 100 according to an embodiment of the present invention is described.

[0041] like Figure 1 and Figure 2 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 first water tank 103, a second water tank 104 and a heat exchanger 105.

[0042] The washing cup 102 is used for temporarily storing water and filtering 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 first water tank 103 and the second water tank 104 both have water storage space, which can be used for storing water. 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, which can be used to place tableware to be washed.

[0043] Among them, the washing box 101 has a washing space 1011, the washing cup 102 is arranged below the washing box 101, the first water tank 103 has a first supply and drain pipe 6, the first supply and drain pipe 6 connects the first water tank 103 and the washing cup 102, and is suitable for supplying water to the washing cup 102, the second water tank 104 has a second supply and drain pipe 8, the second supply and drain pipe 8 connects the second water tank 104 and the washing cup 102, and is suitable for supplying water to the washing cup 102, the heat exchanger 105 has a hot circulation pipe and a cold circulation pipe for realizing heat exchange, one end of the hot circulation pipe is connected to the washing cup 102 (such as: connected through the first water supply pipe 3), the other end of the hot circulation pipe is connected to the washing space, and the cold circulation pipe is connected to the second water tank 104.

[0044] It should be pointed out that in the embodiment of the present application, the water supply pipeline and the water inlet pipeline are both used to supply water, while the supply and drainage pipeline can both supply water and drain water, such as: water can be supplied to the washing cup 102 through the first water inlet pipeline 1, water can be supplied to the first water tank 103 through the first supply and drainage pipeline 6, or water in the first water tank 103 can be discharged through the first supply and drainage pipeline 6.

[0045] It can be understood that the other end of the heat circulation pipeline is connected to the washing space 1011, which means that in some embodiments, the other end of the heat circulation pipeline can be connected to the washing cup 102, that is, the water after heat exchange can flow back to the washing cup 102; in other embodiments, the other end of the heat circulation pipeline can be connected to the inner liner interface 1013 of the washing box, that is, correspondingly, the water after heat exchange can flow back to the washing box 101 through the inner liner interface 1013 (see Figure 3 shown).

[0046] The first supply and drainage pipeline 6 can be constructed as a reused pipeline, that is, to realize water supply and drainage. The first supply and drainage pipeline 6 can also include a first pipe and a second pipe, one of the first pipe and the second pipe is used for water supply and the other is used for drainage. Similarly, the second supply and drainage pipeline 8 can also be arranged in this way.

[0047] In the embodiment of the present application, a certain amount of water can be stored in the first water tank 103 and the second water tank 104. Of course, a washing medium mixed with a detergent can also be directly stored therein, which is not specifically limited in the present application.

[0048] Specifically, the water in the first water tank 103 can be supplied to the washing cup 102 through the first supply and discharge pipe 6 , and the water in the second water tank 104 can be supplied to the washing cup 102 through the second supply and discharge pipe 8 .

[0049] Furthermore, the second water tank 104 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 105, and the corresponding cold water in the second water tank 104 can enter the cold end of the heat exchanger 105, 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 first water tank 103 and the second water tank 104 can dissipate heat with the environment and gradually rise to the ambient temperature. The water in the first water tank 103 and the second water tank 104, which 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 first water tank 103 to the washing temperature required by the dishwasher 100 is also lower, which can further improve the energy saving effect.

[0050] According to the dishwasher 100 of the embodiment of the present application, on the one hand, by providing a first water tank 103 and a second water tank 104, the second water tank 104 can cooperate with the heat exchanger 105 to realize waste heat recovery, and the water in the first water tank 103 and the second water tank 104 can be heated to room temperature before the cleaning operation. The energy consumption of heating to the temperature required by the dishwasher 100 is lower, which can effectively reduce the energy consumption of the dishwasher 100. In addition, 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.

[0051] According to some embodiments of the present application, the dishwasher 100 includes at least a main wash sequence and a rinsing sequence. Before the main wash sequence ends, the heat exchanger 105 is turned on to heat the water in the second water tank 104. During the rinsing sequence, the water in the second water tank 104 is supplied to the washing cup 102.

[0052] It can be understood that the dishwasher 100 includes at least a main wash sequence and a rinse sequence. In the main wash sequence, water from the first water tank 103, the second water tank 104 or directly supplied by the water source (after being softened by the water softener 106) is transported to the washing space 1011 of the dishwasher 100 through the washing cup 102 and heated to improve the cleaning effect of the kitchen utensils in the washing space 1011; and the rinsing sequence can include hot rinsing and cold rinsing. In the hot rinsing sequence, the clean water in the second water tank 104 can be used to wash the kitchen utensils to improve the cleanliness.

[0053] Among them, the water used in the hot rinse sequence is heated up after heat exchange with the high-temperature water in the main wash sequence, thereby improving the rinsing effect on kitchen utensils, shortening the rinsing time, and reducing the energy consumption of the dishwasher 100. The clean water in the first water tank 103 is used to clean kitchen utensils in the cold rinse sequence. The water temperature of the cold rinse sequence is consistent with the ambient temperature, which can also improve the cold rinse effect. Of course, the temperature of the water in the first water tank 103 is the ambient temperature during washing, and the energy consumption required to heat it to the required temperature is also lower, which can further reduce energy consumption.

[0054] In other words, the dishwasher 100 includes at least a main wash sequence, and the rinsing sequence may include a primary rinse sequence (i.e., cold rinse), a secondary rinse sequence (i.e., hot rinse), and a drying sequence.

[0055] Among them, water may need to be added in the main wash sequence, the first rinse sequence and the second rinse sequence. The water adding process is to open the fifth valve 17, and the water flows through the fifth valve 17, the anti-siphon structure 191 or the one-way valve, and the flow meter 18 and then enters the water softener 106. The softened water in the water softener 106 can further enter the first water tank 103 by opening the second valve 7 and flowing through the first supply and discharge pipeline 6, and enter the second water tank 104 by opening the third valve 9 and flowing through the second supply and discharge pipeline 8. After the flow meter 18 reaches the expected reading, the fifth valve 17 is closed.

[0056] It should be pointed out that a reversing valve can be further provided, the inlet of the reversing valve is connected to the water softener 106, and the reversing valve can have multiple outlets, and the multiple outlets are respectively connected to the first supply and drainage pipeline 6, the second supply and drainage pipeline 8 and the first water inlet pipeline 1, so that water can be selectively supplied to the first water tank 103, the second water tank 104 and the washing cup 102 through the reversing valve.

[0057] During the main wash sequence, the third valve 9 and the fourth valve 2 are opened, and the water in the second water tank 104 flows through the second supply and drainage pipe 8 and the first water inlet pipe 1 into the washing cup 102. Then the third valve 9 and the first valve 12 are closed, and the washing pump 4 and the water diversion valve 5 are opened. After the water in the washing cup 102 is heated, it is supplied to the spray arm 1012 for washing.

[0058] During a rinse sequence, the second valve 7 and the fourth valve 2 are opened, and the water in the first water tank 103 flows through the first supply and drainage pipe 6 and 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 cold rinsing operation.

[0059] In the secondary rinsing sequence, the third valve 9 and the fourth valve 2 are opened, and the water in the second water tank 104 flows through the second supply and drainage pipe 8 and the first water inlet pipe 1 into the washing cup 102. The washing pump 4 and the water diversion valve 5 are turned on to supply water to the spray arm 1012 for hot rinsing operation.

[0060] In the drying sequence, the heat source and the fan on the washing box 101 start working to dry the water, and water is added to the first water tank 103 and the second water tank 104 at the same time.

[0061] It is understandable that during the operation of the dishwasher 100 , the main wash sequence, the first rinse sequence, and the second rinse sequence can be performed in sequence to complete a complete process of the dishwasher 100 cleaning pots and dishes.

[0062] Furthermore, when the dishwasher 100 performs the main wash sequence, the duration of the main wash sequence can be obtained in real time. Within the time threshold (such as 3 minutes to 10 minutes) before the end of the main wash sequence, the heat exchanger 105, the hot circulation pipeline and the cold circulation pipeline are turned on to heat the cleaning medium in the second water tank 104.

[0063] That is to say, 3 to 10 minutes before the end of the main wash sequence, the heat exchanger 105, the hot circulation pipeline, and the cold circulation pipeline are turned on to exchange heat with the hot water in the washing cup 102 and the washing space 1011 and the cold water in the second water tank 104 to achieve waste heat recovery. During the hot rinsing operation, the water temperature in the second water tank 104 is higher, so hot rinsing can be achieved.

[0064] Furthermore, it can be understood that the rinsing sequence includes at least a first rinsing sequence and a second rinsing sequence. In the first rinsing sequence, the water in the first water tank 103 is supplied to the washing cup 102, and in the second rinsing sequence, the water in the second water tank 104 is supplied to the washing cup 102.

[0065] like Figure 1 and Figure 2 As shown, the dishwasher 100 further includes a first water inlet pipe 1, one end of which is connected to the inlet of the washing cup 102, and the other end of which is connected to the first supply and discharge pipe 6 and the second supply and discharge pipe 8, so that the first water tank 103 and the second water tank 104 are suitable for supplying water to the washing cup 102.

[0066] Specifically, the first water inlet pipe 1 is connected to the inlet of the washing cup 102, the first supply and drainage pipe 6 is selectively connected to the first water inlet pipe 1, the hot circulation pipe is connected to the washing cup 102, and the cold circulation pipe is connected to the second water tank 104. 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 106. The water softener 106 is respectively connected to the first supply and drainage pipe 6, the second supply and drainage pipe 8, and the first water inlet pipe 1 to selectively supply softened water to the first water tank 103, the second water tank 104, and the washing cup 102, and an anti-siphon structure 19 is provided in the total water inlet pipe 16.

[0067] 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 the other end of the main water inlet pipe 16 is provided with a water softener 106. The water softener 106 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 first water tank 103 through the first supply and drainage pipe 6 to realize water supply to the first water tank 103, and supplied to the second water tank 104 through the second supply and drainage pipe 8 to realize water supply to the second water tank 104. It can also be directly supplied to the first water inlet pipe 1 to realize direct water supply to the washing cup 102. The water in the first 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, and the water in the second water tank 104 can be supplied to the washing cup 102 through the second supply and drainage pipe 8 and the first water inlet pipe 1.

[0068] At the same time, it should be pointed out that an anti-siphon structure 191 or a one-way valve can be provided on the main water inlet pipe 16 to avoid backflow in the first water tank 103 after the water supply to the first water tank 103 is completed. The first supply and drainage pipe 6 can realize the water supply and drainage of the first water tank 103, and the second supply and drainage pipe 8 can realize the water supply and drainage of the second water tank 104. The first water inlet pipe 1 is connected to the first supply and drainage pipe 6, the second supply and drainage pipe 8 and the water softener 106 at the same time. At least part of the three flow paths for supplying water to the washing cup 102 can overlap, that is, at least part of the pipelines of the dishwasher 100 are reused, which can reduce the layout materials of the pipelines, 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.

[0069] like Figure 1 As shown, according to some embodiments of the present application, the first supply and discharge pipeline 6 is provided with a second valve 7 to selectively control the opening or closing of the first supply and discharge pipeline 6, the second supply and discharge pipeline 8 is provided with a third valve 9 to selectively control the opening or closing of the second supply and discharge pipeline 8, and the first water inlet pipeline 1 is provided with a fourth valve 2 to selectively control the opening or closing of the first water inlet pipeline 1.

[0070] Specifically, the second valve 7 can be opened when the first water tank 103 supplies water to the first water inlet pipe 1, or when the main water inlet pipe 16 supplies water to the first water tank 103. The third valve 9 can be opened when the second water tank 104 supplies water to the first water inlet pipe 1, or when the main water inlet pipe 16 supplies water to the second water tank 104. The fourth valve 2 can control the opening and closing of the first water inlet pipe 1.

[0071] It should be noted that when the second valve 7 and the fourth valve 2 are open, the water in the first water tank 103 is supplied to the washing cup 102 through the first supply and discharge pipe 6;

[0072] When the third valve 9 and the fourth valve 2 are open, the water in the second water tank 104 is supplied to the washing cup 102 through the second supply and discharge pipe 8;

[0073] When the second valve 7 and the third valve 9 are closed and the fourth valve 2 is opened, the main water inlet pipe 16 supplies water to the washing cup 102 .

[0074] Thus, water circuit regulation control can be achieved by controlling the selective opening or closing of the second valve 7, the third valve 9 and the second valve 2, so as to selectively switch the water supply in the first water tank 103, the second water tank 104 and the main water supply pipeline 16, thereby reducing the switching difficulty and improving the control convenience of the dishwasher 100.

[0075] It is understandable that the second valve 7, the third valve 9 and the fourth valve 2 can all be constructed as solenoid valves. Through low-pressure control, not only can the intelligence of the dishwasher 100 be improved, but also the second supply and discharge pipe 8 and the cold circulation pipe are independently arranged, and the water inlet of the second water tank 104 and the water circulation of the cold circulation pipe will not interfere with each other, which can improve the working stability and reliability of the dishwasher 100. Figure 1 and Figure 2 As shown, according to some embodiments of the present application, the first water supply pipeline 3 has a washing pump 4 and a water diversion valve 5. The washing pump 4 is suitable for pressurizing the water in 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.

[0076] Specifically, the washing space 1011 can have multiple spray arms 1012, such as an upper spray arm, a lower spray arm, a middle spray arm, etc., and the washing pump 4 can pressurize the water, and the pressurized water can be supplied to the upper spray arm, the lower spray arm and the middle spray arm respectively through the water diversion valve 5, so as to fully clean the pots, dishes, etc. to be washed in the washing space 1011, thereby improving the flushing effect.

[0077] It is understandable that in other embodiments, the washing pump 4 can also integrate a heating function, such as heating water to the required temperature for cleaning through the washing pump 4, 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.

[0078] See also Figure 1As shown, further, the washing pump 4 is connected to the washing cup 102, and the heat circulation pipeline has a heat circulation inlet pipe section 10 and a heat circulation outlet pipe section 11. One end of the heat circulation inlet pipe section 10 is connected to the outlet end of the washing pump 4, and the other end is connected to the hot end inlet of the heat exchanger 105. One end of the heat circulation outlet pipe section 11 is connected to the hot end outlet of the heat exchanger 105, and the other end is connected to the inlet of the washing cup 102.

[0079] 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 105 form a closed-loop flow path. Under the power of the washing pump 4, water can flow into the heat exchanger 105 through the heat circulation inlet pipe section 10. After completing heat exchange in the heat exchanger 105, 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.

[0080] like Figure 3 As shown, in the third embodiment of the present application, the washing box 101 has an inner liner, an inner liner interface 1013 is provided on the inner liner, and the other end of the heat cycle outlet pipe section 11 is connected to the inner liner interface 1013.

[0081] In this way, after the heat exchange is completed in the heat exchanger 104, it can overflow to the washing space 1011 through the inner tank interface 1013 through the heat circulation outlet pipe section 11, and return to the washing cup 102 from the washing space 1011, so that the path of the heat circulation pipeline is short, the pipeline energy consumption is lower, and the energy recovery efficiency is higher. At the same time, the pipeline for discharging sewage can be reused, the pipeline can be simplified, and the cost can be reduced.

[0082] At the same time, the high-temperature sewage in the thermal cycle process does not need to flow back to the washing cup 102 through the first water inlet pipe section 1, but flows back directly to the washing space 1011, which can also reduce the probability of blockage or foreign matter in the first water inlet pipe section 1, and ensure that the water in the washing cup 102 will not be contaminated when the washing cup 102 is replenished or filled with water, thereby improving the cleaning effect of the dishwasher 100 and reducing the probability of residue and odor in the dishwasher 100.

[0083] Furthermore, the heat cycle pipeline further includes: a first valve 12 , which is arranged at the heat cycle inlet pipe section 10 or the heat cycle outlet pipe section 11 .

[0084] 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.

[0085] 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 second water tank 104, and the other end is connected to the cold end inlet of the heat exchanger 105, one end of the cold circulation outlet pipe section 14 is connected to the cold end outlet of the heat exchanger 105, and the other end of the cold circulation outlet pipe section 14 is connected to the second water tank 104.

[0086] That is to say, the second water tank 104, the cold cycle inlet pipe section 13, the cold cycle outlet pipe section 14 and the heat exchanger 105 form a closed-loop circulation path. The water in the second water tank 104 enters the heat exchanger 105 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 105, it flows back to the second water tank 104 through the cold cycle outlet pipe section 14 to heat the water in the second water tank 104, recover waste heat, and reduce the energy consumption of the dishwasher 100.

[0087] It should be pointed out that an overflow pressure relief hole 1031 can be provided on the first water tank 103. The overflow pressure relief hole 1031 is connected to the washing space 1011, has an overflow effect, and can achieve pressure relief to reduce the water supply and drainage resistance of the first water tank 103. A breathable structure can be provided on the second water tank 104 to achieve communication with the atmosphere, so as to reduce the resistance of the second water tank 104 during water supply and drainage, and improve convenience of use.

[0088] exist Figure 1 In the illustrated embodiment, the cold circulation pipeline further includes: a first water pump 15 , which is disposed at the cold circulation inlet pipe section 13 or the cold circulation outlet pipe section 14 .

[0089] Therefore, the first water pump 15 is used to drive the water in the second water tank 104 to flow into the heat exchanger 105 through the cold circulation pipeline for sufficient heat exchange, and then flow back to the second water tank 104.

[0090] Furthermore, 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.

[0091] 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.

[0092] 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.

[0093] According to some embodiments of the present application, the main water inlet pipeline 16 includes a fifth valve 17, a flow meter 18 and an anti-siphon structure 19 connected in sequence, and the flow meter 18, the anti-siphon structure 191 or the one-way valve is integrated in the first water tank 103.

[0094] Specifically, when the fifth valve 17 is opened, the external water source can be connected to the water softener 106. After the water softener 106 softens the hard water, it is supplied to the first water tank 103, the second water tank 104 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 9, the fourth valve 2 and the fifth valve 17 to complete the water addition. The anti-siphon structure 191 or the one-way valve and the flow meter 18 can be integrated in the first 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.

[0095] The fourth valve 2 , the third valve 9 and the second valve 7 may all be integrated into the water softener 106 .

[0096] like Figure 1 As shown, according to some embodiments of the present application, the dishwasher 100 further includes: a main drainage pipe 20, one end of the main drainage pipe 20 is connected to the washing cup 102, and the other end of the main drainage pipe 20 is used to discharge washing wastewater.

[0097] Thus, the sewage after the washing operation in the washing cup 102 and the washing space 1011 can be discharged through the main drainage pipe 20, such as: sewage after the cleaning operation, sewage after the hot rinsing operation, sewage after the cold rinsing operation, etc.

[0098] According to some embodiments of the present application, the main drainage pipeline 20 has a third pump 21 and a drainage anti-siphon structure 22 , and the drainage anti-siphon structure 22 is integrated into the first water tank 103 .

[0099] 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 first water tank 103, which can also improve the degree of integration of the dishwasher 100 and improve the space occupancy of the dishwasher 100.

[0100] like Figure 1 As shown, according to some embodiments of the present application, the first water tank 103 and the second water tank 104 are arranged on the symmetrical two side plates of the washing box 101, the washing cup 102 is arranged on the bottom plate of the washing box 101, and the first water tank 103 has an overflow pressure relief hole 1031 connected to the washing space 1011.

[0101] That is to say, the washing box 101 is generally in the form of a cube or a rectangular structure, and the washing space 1011 therein is used to place pots, dishes, etc., and a first water tank 103 and a second water tank 104 are respectively provided on the left and right side panels of the washing box 101, and a washing cup 102 is provided at the bottom, which can improve the space occupied by the dishwasher 100 and reduce the difficulty of integration.

[0102] According to some embodiments of the present application, the capacity of the first water tank 103 is 2.4L to 4.2L, and the capacity of the second water tank 104 is 2.1L to 5.2L.

[0103] Exemplarily, the capacity of the first water tank 103 is 2.4L, 3L, 4L, 4.2L, etc., and the capacity of the second water tank 104 is 2.1L, 3L, 4L, 5L, 5.2L, etc. The capacities of the first water tank 103 and the second water tank 104 are more reasonable. During each washing process, the water in the first water tank 103 and the second water tank 104 can enter the washing cup 102 with heat not lower than the ambient temperature, thereby improving the washing effect and effectively reducing energy consumption.

[0104] It should be pointed out that if the volume of the second water tank 104 is too large, the waste heat recovery will not have a significant effect on heating the water in the second water tank 104, resulting in high energy consumption in the subsequent heating process. If the volume of the second water tank 104 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.

[0105] In a specific application, the capacity of the first 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, and the capacity of the second water tank 104 is any value among 2.1L, 2.2L, 2.3L, 2. Any value among 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, 4.2L, 4.3L, 4.4L, 4.5L, 4.6L, ​​4.7L, 4.8L, 4.9L, 5L, 5.1L, 5.2L.

[0106] According to some embodiments of the present application, the heat exchanger 105 is configured as a microchannel heat exchanger 105 , and the equivalent diameter of each microchannel ranges from 0.8 mm to 5 mm.

[0107] 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 105 within the dishwasher 100. Furthermore, this size range prevents clogging of the microchannels.

[0108] 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.

[0109] like Figure 1 As shown, in the first embodiment, the first supply and discharge pipe 6 of the dishwasher 100 is constructed as a reused pipe section, that is, the water inlet and outlet are both through the same pipe, while in the second embodiment, as shown Figure 2 As shown, the first supply and drainage pipeline 6 of the dishwasher 100 includes: a first branch 61, a second branch 62 and a first main line 63 connected to the first branch 61 and the second branch 62. The first main line 63 is connected to the first water supply pipeline 1 and is suitable for supplying water to the washing cup 102. The second branch 62 is connected to the water outlet of the first water tank 103, and the first branch 61 is connected to the water inlet of the first water tank 103. The pipeline structure of other parts is the same as that of the first embodiment, and can also achieve the same technical effects as the first embodiment, which will not be repeated here.

[0110] 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.

[0111] 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.

[0112] 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, the washing cup being arranged below the washing box; a first water tank having a first supply and discharge pipe, the first supply and discharge pipe being connected to the first water tank and the washing cup and being adapted to supply water to the washing cup; a second water tank having a second supply and discharge pipe, the second supply and discharge pipe being connected to the second water tank and the washing cup and being adapted to supply water to the washing cup; A heat exchanger having a hot circulation pipeline and a cold circulation pipeline for realizing heat exchange, one end of the hot circulation pipeline is connected to the washing cup, the other end of the hot circulation pipeline is connected to the washing space, and the cold circulation pipeline is connected to the second water tank.

2. The dishwasher according to claim 1, characterized in that The dishwasher includes at least a main wash sequence and a rinsing sequence. Before the main wash sequence ends, the heat exchanger is turned on to heat the water in the second water tank. During the rinsing sequence, the water in the second water tank is supplied to the washing cup.

3. The dishwasher according to claim 2, characterized in that The rinsing sequence includes at least a first rinsing sequence and a second rinsing sequence. During the first rinsing sequence, water in the first water tank is supplied to the washing cup; during the second rinsing sequence, water in the second water tank is supplied to the washing cup.

4. The dishwasher according to claim 1, wherein Also includes: A first water inlet pipe, one end of which is connected to the inlet of the washing cup, and the other end of which is connected to the first supply and drainage pipe and the second supply and drainage pipe, so that the first water tank and the second water tank are suitable for supplying water to the washing cup.

5. The dishwasher according to claim 4, characterized in that Also includes: A main water inlet pipe, one end of which is connected to a water source, and the other end is connected to a water softener. The water softener is respectively connected to the first supply and drainage pipe, the second supply and drainage pipe, and the first water inlet pipe to selectively supply softened water to the first water tank, the second water tank, and the washing cup.

6. The dishwasher according to claim 5, characterized in that The first supply and drainage pipeline is provided with a second valve to selectively control the opening or closing of the first supply and drainage pipeline. The second supply and drainage pipeline is provided with a third valve to selectively control the opening or closing of the second supply and drainage pipeline. The first water inlet pipeline is provided with a fourth valve to selectively control the opening or closing of the first water inlet pipeline.

7. The dishwasher according to claim 6, characterized in that When the second valve and the fourth valve are opened, the water in the first water tank is supplied to the washing cup through the first supply and discharge pipe; When the third valve and the fourth valve are opened, the water in the second water tank is supplied to the washing cup through the second supply and discharge pipe; When the second valve and the third valve are closed and the fourth valve is opened, the main water inlet pipeline supplies water to the washing cup.

8. The dishwasher according to claim 1, wherein: It includes a washing pump, which is connected to the washing cup. The heat circulation pipeline has 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 washing cup inlet.

9. The dishwasher according to claim 8, characterized in that The heat cycle pipeline further includes: a first valve, which is arranged at the heat cycle inlet pipe section or the heat cycle outlet pipe section.

10. The dishwasher according to claim 1, wherein The washing box has an inner liner, an inner liner interface is provided on the inner liner, and the other end of the heat circulation outlet pipe section is connected to the inner liner interface.

11. The dishwasher according to claim 1, wherein The cold circulation pipeline includes: a cold circulation inlet pipe section, a cold circulation outlet pipe section, and a first water pump. One end of the cold circulation inlet pipe section is connected to the second 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 second water tank. The first water pump is arranged in the cold circulation inlet pipe section or the cold circulation outlet pipe section.

12. The dishwasher according to claim 5, characterized in that The main water inlet pipeline includes a fifth valve, a flow meter and an anti-siphon structure or a one-way valve that are connected in sequence, and the flow meter, the anti-siphon structure or the one-way valve are integrated into the first water tank.

13. The dishwasher according to claim 1, wherein The first water tank and the second water tank are arranged on two symmetrical side plates of the washing box, the washing cup is arranged on the bottom plate of the washing box, and the first water tank has an overflow pressure relief hole connected to the washing space.

14. 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 supply pipeline and is suitable for supplying washing medium to the washing cup. The second branch is connected to the water outlet of the first water tank, and the first branch is connected to the water inlet of the first water tank.

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