Dishwasher

Abstract

The utility model discloses a dish washing machine which comprises a washing box, a washing cup, a water tank and a heat exchanger. The washing box is provided with a washing space. The washing cup is provided with a first water supply pipeline communicated with an outlet of the washing cup; the heat exchanger is provided with a heat circulation pipeline capable of achieving heat exchange, one end of the heat circulation pipeline is communicated with the first water supply pipeline, the other end of the heat circulation pipeline is communicated with the washing space, and the first water drainage pipeline is communicated with the heat circulation pipeline so that water drained out of the water tank can be supplied to the washing cup and the heat exchanger through the heat circulation pipeline. According to the dish washing machine, the heat exchanger and the washing cup can be washed, blockage in the heat exchanger and the washing cup can be avoided, the working stability and reliability of the heat exchanger and the washing cup are improved, and then the working stability and reliability of the dish washing machine are improved.

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 have added heat exchangers to recover waste heat during operation. However, these heat exchangers are prone to clogging in related technologies. 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 in which the heat exchanger can be flushed to reduce the probability of clogging and improve the working stability and reliability of the dishwasher.

[0004] According to an embodiment of the present application, a dishwasher includes: a washing box, a washing cup, a water tank, and a heat exchanger, wherein the washing box has a washing space; the washing cup has a first water supply pipe connected to the washing cup outlet, and the water tank has a first drainage pipe; the heat exchanger has a thermal circulation pipe, one end of the thermal circulation pipe is connected to the first water supply pipe, and the other end of the thermal circulation pipe is connected to the washing space, and the first drainage pipe is connected to the thermal circulation pipe, so that water discharged from the water tank can be supplied to the washing cup and the heat exchanger respectively through the thermal circulation pipe.

[0005] According to the dishwasher of the embodiment of the present application, the heat exchanger and the washing cup can be rinsed, which can avoid blockage in the heat exchanger and the washing cup, improve the working stability and reliability of the heat exchanger and the washing cup, and thereby improve the working stability and reliability of the dishwasher.

[0006] According to some embodiments of the present application, the dishwasher further includes a washing pump, the washing cup is connected to the washing pump, one end of the heat circulation inlet pipe section is connected to the outlet of the washing pump, the other end of the heat circulation inlet pipe section 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 space.

[0007] According to some embodiments of the present application, the washing box has an inner liner, and an inner liner interface is provided on the inner liner. One end of the heat cycle outlet pipe section is connected to the hot end outlet of the heat exchanger, and the other end is connected to the inner liner interface.

[0008] According to some embodiments of the present application, the heat circulation pipeline further includes: a first valve and a second valve, the first valve being arranged on the heat circulation inlet pipe section to selectively control the opening or closing of the heat circulation inlet pipe section, and the second valve being arranged on the first drainage pipeline to selectively control the opening or closing of the first drainage pipeline.

[0009] According to some embodiments of the present application, when the washing pump is in working state and the first valve is open and the second valve is closed, the washing cup is connected to the heat exchanger; when the washing pump is in non-working state and when the first valve is open and the second valve is open, the water tank is connected to the washing cup and the heat exchanger respectively.

[0010] According to some embodiments of the present application, the dishwasher further includes: 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, and the water softener is connected to the water tank and the first water inlet pipe to selectively supply softened water to the water tank and the washing cup.

[0011] According to some embodiments of the present application, the dishwasher has: a washing sequence, before the end of the washing sequence, the first valve and the second valve are opened, and the water in the water tank is supplied to the heat exchanger and the washing cup for self-cleaning; and / or the dishwasher also has: a rinsing sequence, before the end of the rinsing sequence, the first valve and the second valve are opened, and the water in the water tank is supplied to the heat exchanger and the washing cup for self-cleaning; and / or the dishwasher also has: a drying sequence, before the end of the drying sequence, the first valve and the second valve are opened, and the water in the water tank is supplied to the heat exchanger and the washing cup for self-cleaning.

[0012] According to some embodiments of the present application, the dishwasher further has: a self-cleaning sequence, in which the first valve and the second valve are opened, and the water in the water tank is supplied to the heat exchanger and the washing cup for self-cleaning.

[0013] According to some embodiments of the present application, the first water supply pipeline has a water diversion valve, which is suitable for diverting water and transporting it to multiple spray arms in the washing space respectively. When the heat exchanger and the washing cup are self-cleaned, the water diversion valve is closed.

[0014] According to some embodiments of the present application, the dishwasher further includes: a second water supply pipe, one end of the second water supply pipe is connected to the water softener, and the other end of the second water supply pipe is connected to the water tank.

[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 Schematic diagram of a dishwasher according to an embodiment of the present application.

[0018] Reference numerals:

[0019] Dishwasher 100,

[0020] Washing box 101, washing space 1011, spray arm 1012, inner tank interface 1013, washing cup 102, water tank 103, overflow pressure relief hole 1031, heat exchanger 104, water softener 105,

[0021] First water supply pipeline 1, third valve 2, second drainage pipeline 3, heating pump 4, water diverter valve 5, first water inlet pipeline 61, first drainage pipeline 62, second valve 7, ventilation overflow channel 8, diverter 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 supply pipeline 16, second valve 17, flow meter 18, first one-way valve 19, main drainage pipeline 20, third pump 21, drainage anti-siphon structure 22. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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 broadly. 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 connections within two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] The term "plurality" used in this application refers to two or more (including two).

[0032] Reference below Figure 1 A dishwasher 100 according to an embodiment of the present invention is described.

[0033] like Figure 1 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 and a heat exchanger 104.

[0034] like Figure 1 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 and a heat exchanger 104.

[0035] Among them, the washing box 101 has a washing space 1011, the washing cup 102 has a second drain pipe 3 connected to the outlet of the washing cup 102, the second drain pipe 3 is connected to the washing cup 102, the water tank 103 has a first drain pipe 62, the heat exchanger 104 has a heat circulation pipe 10, one end of the heat circulation pipe 10 is connected to the second drain pipe 3, and the other end of the heat circulation pipe 10 is connected to the washing space 1011, and the first drain pipe 62 is connected to the heat circulation pipe so that the water discharged from the water tank 103 can be supplied to the washing cup 102 and the heat exchanger 104 respectively through the heat circulation pipe.

[0036] In other words, the first drainage pipe 62 is connected to the washing cup 102 and the heat exchanger 104 through the heat circulation pipe, so that the water discharged from the water tank 103 is suitable for supplying to the washing cup 102 or rinsing the washing cup 102 and the heat exchanger 104.

[0037] Specifically, the washing cup 102 is connected to the heat circulation pipeline. After cleaning is completed in the washing cup 102, it can enter the hot end of the heat exchanger 104, and the cold water in the corresponding 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 exchange 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.

[0038] 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 washing chamber 1011 of dishwasher 100 via wash cup 102 and heated to improve the cleaning effect on the kitchenware in washing chamber 1011. During the hot rinse phase, clean water from water tank 103 can be used to rinse kitchenware for improved cleaning. The water used in the hot rinse phase is heated by exchanging heat with the high-temperature water from the wash phase, thereby improving the rinsing effect on the kitchenware, shortening the rinse time, and reducing the 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.

[0039] Furthermore, see Figure 1 As shown, the water in the water tank 103 can be used to backwash the washing cup 102 and the heat exchanger 104. That is, the water in the water tank 103 enters the thermal circulation pipeline through the first drainage pipe 62 and is divided within the thermal circulation pipeline, with one channel entering the washing cup 102 and the other channel entering the heat exchanger 104, thereby respectively rinsing the washing cup 102 and the heat exchanger 104. At the same time, the water in the water tank 103 can also be used to supply water to the washing cup 102. That is, the water in the water tank 103 enters the thermal circulation pipeline through the first drainage pipe 62, passes through at least a portion of the thermal circulation pipeline, and enters the washing cup 102 through the outlet of the washing cup 102, thereby completing the water replenishment or addition of water to the washing cup 102.

[0040] According to the dishwasher 100 of the embodiment of the present application, the heat exchanger 104 and the washing cup 102 can be rinsed, which can prevent blockage in the heat exchanger 104 and the washing cup 102, improve the working stability and reliability of the heat exchanger 104 and the washing cup 102, and further improve the working stability and reliability of the dishwasher 100.

[0041] like Figure 1 As shown, the heat circulation pipeline 10 includes: 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 of the washing cup 102, and the other end is connected to the hot end inlet of the heat exchanger 104. The first drainage pipeline 62 is connected to the heat circulation inlet pipe section 10.

[0042] Specifically, during the waste heat recovery process, the second drain pipe 3 discharges the high-temperature wastewater from the wash cup 102 and enters the heat exchanger 104 through the heat cycle inlet pipe section 10. Simultaneously, when the wash cup 102 is filled with water or the wash cup 102 and heat exchanger 104 are rinsed, the water in the water tank 103 partially enters the wash cup 102 through the heat cycle inlet pipe section 10, and partially enters the heat exchanger 104.

[0043] In this way, during the flushing process, the washing cup 102 and the heat exchanger 104 can be cleaned simultaneously, thereby improving the cleaning effect. The flushing pipeline and the heat circulation pipeline can at least partially overlap, which can also simplify the pipeline structure, reduce the total pipeline length, and reduce costs.

[0044] See also Figure 1 As shown, the dishwasher 100 further includes a washing pump 4, which is disposed on the second drain pipe 3. The washing cup 102 is connected to the washing pump 4. One end of the heat cycle inlet pipe section 10 is connected to the outlet of the washing pump 4, and the other end of the heat cycle inlet pipe section 10 is connected to the hot end inlet of the heat exchanger 10. One end of the heat cycle outlet pipe section 11 is connected to the hot end outlet of the heat exchanger 104, and the other end of the heat cycle outlet pipe section 11 is connected to the hot end outlet of the heat exchanger 104.

[0045] Among them, a washing pump 4 and a water diversion valve 5 are provided on the second drainage pipe 3. The washing pump 4 is connected to the outlet of the washing cup 102. The washing pump 4 is suitable for pressurizing the water in the washing cup 102. 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.

[0046] Specifically, the washing space 1011 can have multiple spray arms 1012, such as an upper spray arm 1012, a lower spray arm 1012, a middle spray arm 1012, etc., and the washing pump 4 can pressurize the water in the washing cup 102. The pressurized water can be supplied to the upper spray arm 1012, the lower spray arm 1012 and the middle spray arm 1012 respectively 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.

[0047] It is understandable that in other embodiments, the washing pump 4 can have an integrated heating function and heat the water to the required temperature for cleaning. 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.

[0048] Furthermore, the washing box 101 includes an inner tank, which is provided with an inner tank interface 1013 , one end of the heat cycle outlet pipe section 11 is connected to the hot end inlet of the heat exchanger 104 , and the other end of the heat cycle outlet pipe section 11 is connected to the inner tank interface 1013 .

[0049] Therefore, 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 the heat exchange 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 then flow back to the washing cup 102 from the washing space 1011, so that the path of the heat circulation pipeline is shortened, 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.

[0050] It can be understood that the water tank 103 is provided with an overflow channel 8 and an overflow pressure relief hole 1031, and the inner tank interface 1013 is connected to the overflow channel 8 through the overflow pressure relief hole, that is, the water tank 103 can be connected to the inner tank through the overflow pressure relief hole 1031, one end of the heat cycle 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 104, one end of the heat cycle outlet pipe section 11 is connected to the hot end outlet of the heat exchanger 104, and the other end is connected to the washing space 1011.

[0051] In this way, the high-temperature sewage in the heat circulation outlet pipe section 11 can be returned to the washing space 1011 through the original communication path between the water tank 103 and the inner tank, without opening an additional communication hole on the inner tank. By reusing the existing inner tank interface 1013, the structure can be simplified and the cost can be reduced.

[0052] like Figure 1 As shown, the water tank 103 has a first water supply pipe 61 and a first drainage pipe 62. The first drainage pipe 62 is connected to the water outlet of the water tank 103, and the first water supply pipe 61 is connected to the water inlet of the water tank 103. One end of the main water inlet pipe 16 is connected to the water source, and the other end is connected to the water softener 105. The outlet end of the water softener 105 is provided with a reversing valve 9. The reversing valve 9 has a first outlet and a second outlet. The first outlet is connected to the first water supply pipe 1, and the second outlet is connected to the first water supply pipe 61 (that is, one end of the first water supply pipe 61 is connected to the water softener 105, and the other end is connected to the water tank 103) to selectively supply softened water to the water tank 103 and the washing cup 102, and a one-way valve 19 or an anti-siphon structure is provided in the main water inlet pipe 16.

[0053] 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 reversing valve 9 and the first water supply pipe 61, or it can be directly supplied to the first water supply 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 drainage pipe 62 and the first water supply pipe 1.

[0054] According to some embodiments of the present application, the heat circulation pipeline also includes: a first valve 12 and a second valve 7, the first valve 12 is arranged on the heat circulation inlet pipe section 10, and selectively controls the opening or closing of the heat circulation inlet pipe section 10, and the second valve 7 is arranged on the first drainage pipeline 62 to selectively control the opening or closing of the first drainage pipeline 62.

[0055] Wherein, when the washing pump 4 is in working state, and when the first valve 12 is open and the second valve 7 is closed, the washing cup 102 is connected with the heat exchanger 104;

[0056] When the washing pump 4 is in a non-operating state, and when the first valve 12 and the second valve 7 are opened, the water tank 103 is communicated with the washing cup 102 and the heat exchanger 104 respectively.

[0057] Specifically, the dishwasher 100 of the embodiment of the present application has the following usage scenarios:

[0058] 1) Waste heat recovery usage scenario: In this scenario, when the washing pump 4 is switched to the working state, the second valve 7 is closed and the first valve 12 is opened, the heat exchanger 104 can recover waste heat. That is, the high-temperature sewage in the washing cup 102 can enter the heat exchanger 104 through the heat cycle inlet pipe section 10 and the first valve 12 under the drive of the washing pump 4.

[0059] 2) Backwash scenario: In this scenario, when the washing pump 4 is switched to the non-working state and the second valve 7 is opened and the first valve 12 is opened, the water tank 103 can supply water to the heat cycle inlet pipe section 10 and divert the water in the heat cycle inlet pipe section 10, flushing the heat exchanger 104 along one path and flushing the washing cup 102 along the other path.

[0060] 3) Water supply scenario: in this scenario, when the washing pump 4 is switched to the non-working state and the second valve 7 is opened and the first valve 12 is opened, the water tank 103 can supply water to the heat cycle inlet pipe section 10 and further supply it to the washing cup 102.

[0061] Thus, the first valve 12 can be linked with the second valve 7 and the washing pump 4, and when self-cleaning is required, the second valve 7 can be controlled to open to complete the corresponding self-cleaning process. When waste heat recovery is required, pressure can be provided by the washing pump 4, and the second valve 7 can be closed to pump high-temperature sewage into the heat exchanger 104, so as to improve the intelligence level of the dishwasher 100 and enhance the user experience.

[0062] It is understandable that the second valve 7 can also prevent high-temperature sewage from flowing back into the water tank 103 .

[0063] In a specific application, the ventilation overflow channel 8 extends to any value of 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm below the highest point of the water tank 103 .

[0064] 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 pipe section is connected to the water tank 103.

[0065] 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.

[0066] 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. Thus, the first water pump 15 is used to drive the water in the water tank 103 through the cold circulation pipeline to flow into the heat exchanger 104 for sufficient heat exchange, and then return to the water tank 103.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] According to some embodiments of the present application, the first drainage pipeline 62 is provided with a second valve 7 to control the selective opening and closing of the first drainage pipeline 62 .

[0071] Specifically, the second valve 7 can be opened when the water tank 103 supplies water to the first water supply pipeline 1 .

[0072] It is understandable that the second valve 7 can be constructed as a solenoid valve. Through low-pressure control, not only can the intelligence level of the dishwasher 100 be improved, but the first drainage pipe 62 and the cold circulation pipe are also independently arranged. The water inlet of the water tank 103 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.

[0073] According to some embodiments of the present application, the main water supply pipeline 16 includes a third valve 17 , a flow meter 18 , and a one-way valve 19 that are connected in sequence, and the flow meter 18 and the one-way valve 19 are integrated into the water tank 103 .

[0074] Specifically, opening the third valve 17 can connect the external water source with 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, and the third valve 17 to complete the water addition. The anti-siphon structure 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.

[0075] 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 drained through the main drain line 20, such as wastewater from the washing process, wastewater from the hot rinse process, and wastewater from the cold rinse process.

[0076] 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 water tank 103 .

[0077] 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.

[0078] 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 water tank 103 is set on one of the left and right side panels of the washing box 101, and a washing cup 102 is set at the bottom, which can improve the space occupied by the dishwasher 100 and reduce the difficulty of integration.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] In a specific application, the length of the heat exchanger 104 is any value among 150 mm, 160 mm, 170 mm, 180 mm, 190 mm, 200 mm, 210 mm, 220 mm, 230 mm, 240 mm, 250 mm, 260 mm, 270 mm, and 280 mm.

[0088] The height of the heat exchanger 104 is any value among 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, and 30mm.

[0089] The width of the heat exchanger 104 is any value among 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 100 mm, 110 mm, 120 mm, 130 mm, 140 mm, 150 mm, 160 mm, 170 mm, 180 mm, 190 mm, and 200 mm.

[0090] In a specific design, the length, width, and height dimensions of the heat exchanger 104 are: 240 mm, 20 mm, and 22 mm.

[0091] According to an embodiment of the present application, the dishwasher 100 has: a washing sequence, before the end of the washing sequence, the first valve 12 and the second valve 7 are opened, and the water in the water tank 103 is supplied to the heat exchanger 104 and the washing cup 102 for self-cleaning; and / or the dishwasher also has: a rinsing sequence, before the end of the rinsing sequence, the first valve 12 and the second valve 7 are opened, and the water in the water tank 103 is supplied to the heat exchanger 104 and the washing cup 102 for self-cleaning; and / or the dishwasher also has: a drying sequence, before the end of the drying sequence, the first valve 12 and the second valve 7 are opened, and the water in the water tank 103 is supplied to the heat exchanger 104 and the washing cup 102 for self-cleaning.

[0092] That is to say, the dishwasher 100 of the embodiment of the present application cleans the heat exchanger 104 and the washing cup 102 before the end of the washing sequence, or before the end of the rinsing sequence, or before the end of the drying sequence, which can effectively reduce the probability of blockage of the heat exchanger 104 and the washing cup 102, and can flush out the dirty water in the heat exchanger 104 and the washing cup 102 in time before completing the washing operation, thereby avoiding the generation of odor in the dishwasher 100 and improving the user experience.

[0093] It is understandable that a self-cleaning process can be set in one or more of the cleaning sequence, rinsing sequence and drying sequence to effectively improve the cleaning effect of the heat exchanger 104 and the washing cup 102 through one or more self-cleaning, thereby improving the user experience.

[0094] Of course, the dishwasher 100 of the embodiment of the present application can also be independently provided with a self-cleaning function, that is, the dishwasher 100 can also have: a self-cleaning sequence, in which the first valve 12 and the second valve 7 are opened, and the water in the water tank 103 is supplied to the heat exchanger 104 and the washing cup 102 for self-cleaning.

[0095] As a result, the dishwasher 100 can execute the self-cleaning sequence and realize the self-cleaning of the dishwasher 100, thereby improving the cleanliness of the dishwasher 100, thereby improving the cleaning effect of the dishwasher 100 and enhancing the user experience.

[0096] Furthermore, the second drainage pipeline 3 has a water diversion valve 5, which is suitable for diverting water and delivering it to the multiple spray arms 1012 in the washing space 1011. When the heat exchanger 104 and the washing cup 102 are rinsed, the water diversion valve 5 is closed.

[0097] Therefore, during the self-cleaning process, the water diversion valve 5 is closed to prevent the clean water used to flush the heat exchanger 104 from entering the washing space 1011 during the self-cleaning process, and the water pressure of the flushing clean water can be maintained at a high level to ensure the backwashing effect.

[0098] 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.

[0099] 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 supply line connected to an outlet of the washing cup; a water tank having a first drainage pipeline; A heat exchanger having a heat circulation pipeline, one end of which is connected to the first water supply pipeline, and the other end of which is connected to the washing space. The first drainage pipeline is connected to the heat circulation pipeline so that water discharged from the water tank can be supplied to the washing cup and the heat exchanger respectively through the heat circulation pipeline.

2. The dishwasher according to claim 1, characterized in that It also includes a washing pump, the washing cup is connected to the washing pump, 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 of the washing pump, the other end of the heat circulation inlet pipe section 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 space.

3. The dishwasher according to claim 2, characterized in that The washing box has an inner liner, and an inner liner interface is provided on the inner liner. One end of the heat cycle outlet pipe section is connected to the hot end outlet of the heat exchanger, and the other end is connected to the inner liner interface.

4. The dishwasher according to claim 2, characterized in that The heat circulation pipeline also includes: a first valve and a second valve, the first valve is arranged on the heat circulation inlet pipe section to selectively control the opening or closing of the heat circulation inlet pipe section, and the second valve is arranged on the first drainage pipeline to selectively control the opening or closing of the first drainage pipeline.

5. The dishwasher according to claim 4, characterized in that When the washing pump is in operation, and when the first valve is open and the second valve is closed, the washing cup is in communication with the heat exchanger; When the washing pump is in a non-operating state, and when the first valve is opened and the second valve is opened, the water tank is communicated with the washing cup and the heat exchanger respectively.

6. The dishwasher according to claim 5, characterized in that The dishwasher further 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 connected to the water tank and the first water inlet pipe to selectively supply softened water to the water tank and the washing cup.

7. The dishwasher according to claim 6, characterized in that The dishwasher has: a washing sequence, before the washing sequence ends, the first valve and the second valve are opened, and the water in the water tank is supplied to the heat exchanger and the washing cup for self-cleaning; and / or, the dishwasher further has: a rinsing sequence, before the rinsing sequence ends, the first valve and the second valve are opened, and the water in the water tank is supplied to the heat exchanger and the washing cup for self-cleaning; and / or, the dishwasher further has: a drying sequence, before the drying sequence ends, the first valve and the second valve are opened, and the water in the water tank is supplied to the heat exchanger and the washing cup for self-cleaning.

8. The dishwasher according to claim 7, characterized in that The dishwasher further has a self-cleaning sequence, in which the first valve and the second valve are opened, and water from the water tank is supplied to the heat exchanger and the washing cup for self-cleaning.

9. The dishwasher according to any one of claims 1 to 8, characterized in that The first water supply pipeline has a water diversion valve, which is suitable for diverting water and delivering it to multiple spray arms in the washing space respectively. When the heat exchanger and the washing cup are self-cleaning, the water diversion valve is closed.

10. The dishwasher according to claim 6, characterized in that Also includes: A second water supply pipeline, one end of the second water supply pipeline is connected to the water softener, and the other end of the second water supply pipeline is connected to the water tank.

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