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 inlet pipeline connected to the washing cup inlet; the water tank is suitable for supplying water to the washing cup; the heat exchanger is provided with a heat circulation pipeline and a self-cleaning 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 heat exchanger, one end of the self-cleaning pipeline is connected with the heat exchanger, and the other end is communicated with the first water inlet pipeline. Therefore, by arranging the self-cleaning pipeline, back flushing of the heat exchanger and at least part of the heat circulation pipeline can be achieved through cooperation of the first water inlet pipeline and the self-cleaning pipeline, the probability that the heat circulation pipeline and the heat exchanger are blocked can be reduced, and the working stability and reliability of the dish washing machine are improved.

Description

Technical Field

[0001] The present invention 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. Summary of the Invention

[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 operating 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 inlet pipe connected to the washing cup inlet; the water tank is suitable for supplying water to the washing cup; the heat exchanger has a thermal circulation pipe and a self-cleaning pipe for achieving heat exchange, one end of the thermal circulation pipe is connected to the washing cup, and the other end of the thermal circulation pipe is connected to the heat exchanger; the self-cleaning pipe has one end connected to the heat exchanger, and the other end is connected to the first water inlet pipe.

[0005] According to the dishwasher of the embodiment of the present application, by providing a self-cleaning pipeline, the first water inlet pipeline can cooperate with the self-cleaning pipeline to achieve reverse flushing of the heat exchanger and at least part of the heat circulation pipeline, which can reduce the probability of blockage of the heat circulation pipeline and the heat exchanger, thereby improving the working stability and reliability of the dishwasher.

[0006] According to some embodiments of the present application, the heat circulation pipeline has a heat circulation inlet pipe section and a heat circulation outlet pipe section, the heat circulation inlet pipe section is connected to the washing cup, one end of the heat circulation outlet pipe section is connected to the hot end outlet of the heat exchanger, and the other end of the heat circulation outlet pipe section is connected to the washing space.

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

[0008] According to some embodiments of the present application, the dishwasher further includes: a main water inlet pipe and a reversing valve, one end of the main water inlet pipe is connected to a water source, and the other end is connected to a water softener, and the water softener selectively connects the water tank and the washing cup through the reversing valve.

[0009] According to some embodiments of the present application, the first water inlet pipe is connected to the reversing valve and the washing cup, and the self-cleaning pipe is located between the reversing valve and the washing cup.

[0010] According to some embodiments of the present application, the dishwasher further includes: a first water supply pipe and a washing pump, the first water supply pipe being connected to the outlet of the washing cup, the washing cup being connected to the washing pump through the first water supply pipe, one end of the heat circulation inlet pipe section being connected to the outlet of the washing pump, and the other end of the heat circulation inlet pipe section being connected to the hot end inlet of the heat exchanger.

[0011] According to some embodiments of the present application, the dishwasher further includes: a first valve, which is disposed on the heat circulation inlet pipe section and selectively controls the heat circulation inlet pipe section to be opened or closed.

[0012] According to some embodiments of the present application, when the washing pump is turned on and the first valve is opened, the heat exchanger recovers waste heat; when the washing pump is turned off and the first valve is opened, the heat exchanger is flushed.

[0013] According to some embodiments of the present application, the dishwasher has: a washing sequence, before the end of the washing sequence, the self-cleaning pipeline, the heat exchanger, the thermal circulation inlet pipe section and the washing cup are connected in sequence to perform self-cleaning of the heat exchanger; and / or the dishwasher also has: a rinsing sequence, before the end of the rinsing sequence, the self-cleaning pipeline, the heat exchanger, the thermal circulation inlet pipe section and the washing cup are connected in sequence to perform self-cleaning of the heat exchanger; and / or the dishwasher also has: a drying sequence, the self-cleaning pipeline, the heat exchanger, the thermal circulation inlet pipe section and the washing cup are connected in sequence to perform self-cleaning of the heat exchanger.

[0014] According to some embodiments of the present application, the dishwasher further has: a self-cleaning sequence, in which the self-cleaning pipeline, the heat exchanger, the heat circulation inlet pipe section and the washing cup are connected in sequence to perform self-cleaning of the heat exchanger.

[0015] According to some embodiments of the present application, a third valve is provided on the first water supply pipeline. When the heat exchanger is self-cleaned, the third valve is closed; when water enters the washing cup, the third valve is opened.

[0016] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0018] Figure 1 is a schematic diagram of a dishwasher according to a first embodiment of the present application;

[0019] Figure 2 is a schematic diagram of a dishwasher according to a second embodiment of the present application.

[0020] Reference numerals:

[0021] Dishwasher 100,

[0022] 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,

[0023] First water supply pipeline 1, first drainage pipeline 3, washing pump 4, water diversion valve 5, second water supply pipeline 61, second drainage pipeline 62, second valve 7, ventilation overflow channel 8, reversing valve 9, hot cycle inlet pipe section 10, hot cycle outlet pipe section 11, first valve 12, cold cycle inlet pipe section 13, cold cycle outlet pipe section 14, first water pump 15, main water inlet pipeline 16, third valve 17, flow meter 18, one-way valve 19, main drainage pipeline 20, third pump 21, drainage anti-siphon structure 22, self-cleaning pipeline 23. DETAILED DESCRIPTION

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

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

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

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

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

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

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] In the description of the present invention, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features not being in direct contact with each other but being in contact with each other via another feature therebetween.

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

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

[0034] Reference below Figure 1-Figure 2 A dishwasher 100 according to an embodiment of the present invention is described.

[0035] 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.

[0036] Among them, the washing box 101 has a washing space 1011, the washing cup 102 has a first water supply pipe 1 connected to the inlet of the washing cup 102 and a first drainage pipe 3 connected to the outlet of the washing cup 102, the heat exchanger 104 has a thermal circulation pipe 10 and a self-cleaning pipe 11, one end of the thermal circulation pipe 10 is connected to the washing cup 102, and the other end of the thermal circulation pipe 10 is connected to the heat exchanger 104, one end of the self-cleaning pipe 23 is connected to the heat exchanger 104, and the other end is connected to the first water inlet pipe 1.

[0037] like Figure 1 As shown, in the first embodiment, the self-cleaning pipeline 23 can cooperate with the heat cycle inlet pipe section 10 to realize waste heat recovery. During the waste heat recovery process, the first drainage pipeline 3 discharges the high-temperature sewage in the washing cup 102, and enters the heat exchanger 104 through the heat cycle inlet pipe section 10, flows out of the heat exchanger 104 through the self-cleaning pipeline 23, and enters the washing cup 102 through the first water inlet pipeline 1 to complete the waste heat recovery cycle. During the self-cleaning process, the water flowing into the first water inlet pipeline 1 is introduced through the self-cleaning pipeline 23, and flows through the heat exchanger 104 and the heat cycle inlet pipe section 10 in sequence, and then flows back to the washing cup through the washing cup 102 outlet.

[0038] Thus, water supplied from an external water source can be introduced through the first water inlet pipe 1 to flush the heat exchanger 104 , and high-temperature waste water can also be returned to the washing cup 102 through the self-cleaning pipe 23 .

[0039] It should be pointed out that in the embodiment of the present application, the water supply pipeline and the water inlet pipeline are used for water supply, and the drainage pipeline is used for drainage, and the supply and drainage pipeline can realize both water supply and drainage. For example, water can be supplied to the washing cup 102 through the first water supply pipeline 1, and the water in the water tank 103 can be discharged through the second drainage pipeline.

[0040] Specifically, the water tank 103 is connected to the cold circulation pipeline, and the washing cup 102 is connected to the hot 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 cleaning 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, and the water in the water tank 103 that is not lower than the ambient temperature is supplied to the washing cup 102 for cleaning, which can improve the cleaning effect, and the energy consumption of heating the water in the water tank 103 to the cleaning temperature required by the dishwasher 100 is also lower, which can further improve the energy saving effect.

[0041] 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.

[0042] Furthermore, see Figure 1 and Figure 2 As shown, a self-cleaning pipeline 23 can be further provided on the heat exchanger 104, and the two ends of the self-cleaning pipeline 23 are respectively connected to the heat exchanger 104 and the first water inlet pipeline 1, so that when the first water inlet pipeline 1 supplies water to the washing cup 102, a portion of the water in the first water inlet pipeline 1 can enter the heat exchanger 104 through the self-cleaning pipeline 23, and flow through the first drainage pipeline 3 back to the washing cup 102. When the waste heat is recovered, the sewage in the washing cup 102 flows through the first drainage pipeline 3 to the heat exchanger 104. That is, by providing the self-cleaning pipeline 23, at least a portion of the heat circulation pipeline defined by the heat exchanger 104 and the first drainage pipeline 3 can be reversely flushed, especially the heat exchanger 104 can be reversely flushed, which can avoid blockage in the heat exchanger 104, improve the working stability and reliability of the heat exchanger 104, and thereby improve the working stability and reliability of the dishwasher 100.

[0043] According to the dishwasher 100 of the embodiment of the present application, by providing a self-cleaning pipeline 23, the first water inlet pipeline 1 can cooperate with the self-cleaning pipeline 23 to achieve back flushing of the heat exchanger 104 and at least part of the heat circulation pipeline, which can reduce the probability of blockage of the heat circulation pipeline and the heat exchanger 104, thereby improving the working stability and reliability of the dishwasher 100.

[0044] like Figure 1 and Figure 2 As shown, the heat circulation pipeline 10 has a heat circulation inlet pipe section 10 and a heat circulation outlet pipe section 11. The heat circulation inlet pipe section 10 is connected to the washing cup 102 through the first drainage pipe 3. One end of the heat circulation outlet pipe section 11 is connected to the hot end outlet of the heat exchanger 104, and the other end of the heat circulation outlet pipe section 11 is connected to the washing space 1011.

[0045] Specifically, if Figure 2 As shown, in the second embodiment, during the waste heat recovery process, the first drainage pipe 3 discharges the high-temperature sewage in the washing cup 102 and enters the heat exchanger 104 through the heat cycle inlet pipe section 10. The high-temperature sewage in the heat exchanger 104 flows out through the heat cycle outlet pipe section 11 and is drained to the washing space 1011 through the other end of the heat cycle outlet pipe section 11.

[0046] It can be understood that in the first embodiment, the self-cleaning pipeline 23 can be reused, thereby simplifying the pipeline structure and reducing costs. In the second embodiment, the self-cleaning pipeline 23 and the heat circulation outlet pipe section 11 can each perform their own functions, and can also improve the stability and reliability of the dishwasher 100.

[0047] It should be noted that a switch valve may be provided on the self-cleaning pipeline 23 to enable the self-cleaning pipeline 23 to be selectively opened or closed.

[0048] See also Figure 1 and Figure 2 As shown, the dishwasher 100 also includes a first drain pipe 3 and a washing pump 4. The first drain pipe 3 is connected to the outlet of the washing cup 102. The washing cup 102 is communicated with the washing pump 4 through the first drain pipe 3, that is, the outlet of the washing cup 102 is communicated with the washing pump 4. One end of the thermal cycle inlet pipe section 10 is communicated with the outlet of the washing pump 4, and the other end of the thermal cycle inlet pipe section 10 is communicated with the hot end inlet of the heat exchanger 104. A washing pump 4 and a water diversion valve 5 are provided on the first drain pipe 3. The washing pump 4 is communicated with the outlet of the washing cup 102. 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 transporting it to the multiple spray arms 1012 in the washing space 1011.

[0049] 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.

[0050] 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.

[0051] In the second embodiment, the washing box 101 includes an inner tank, on which an inner tank interface 1013 is provided. 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.

[0052] 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 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.

[0053] It can be understood that an overflow channel 8 and an overflow pressure relief hole 1031 are provided on the water tank 103, and the inner tank interface 1013 is connected to the overflow channel 8 through the overflow pressure relief hole 1031, 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.

[0054] 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.

[0055] like Figure 1 and Figure 2 As shown, the dishwasher 100 also includes: a main water inlet pipe 16 and a reversing valve 9. One end of the main water inlet pipe 16 is connected to a water source, and the other end is connected to a water softener 106. The water softener 106 selectively connects the water tank 103 and the washing cup 102 through the reversing valve 9. The first water inlet pipe 1 connects the reversing valve 9 and the washing cup 102. The self-cleaning pipe 23 is connected to the first water inlet pipe 1 and is located between the reversing valve 9 and the washing cup 102.

[0056] Specifically, the water tank 103 has a second water supply pipe 61 and a second drainage pipe 62, the second drainage pipe 62 is selectively connected to the first water supply pipe 1 and is suitable for supplying water to the washing cup 102, the second drainage pipe 62 is connected to the water outlet of the water tank 103, the second water supply pipe 61 is connected to the water inlet of the water tank 103, one end of the total water inlet pipe 16 is connected to the water source, and the other end is connected to the water softener 105, and a reversing valve 9 is provided at the outlet end of the water softener 105. 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 second water supply pipe 61, so as 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 total water inlet pipe 16.

[0057] 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 second 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 second drainage pipe 62 and the first water supply pipe 1.

[0058] like Figure 1 and Figure 2 As shown, the self-cleaning pipeline 23 is located between the reversing valve 9 and the washing cup 102, so that the water entering the self-cleaning pipeline 23 can pass through the water softened by the water softener 105, thereby reducing the probability of blockage of the self-cleaning pipeline 23 during the self-cleaning process and improving the self-cleaning effect. In addition, through the setting of the reversing valve 9, in the first embodiment, that is, the embodiment in which the actuator pipeline 23 is reused as the heat circulation outlet pipe section 11, high-temperature sewage can be prevented from flowing back into the water softener 105, thereby avoiding damage to the water softener 105, and further improving the reliability and stability of the dishwasher 100.

[0059] According to some embodiments of the present application, the heat cycle pipeline further includes: a first valve 12, which is disposed at the heat cycle inlet pipe section 10 and selectively controls the heat cycle inlet pipe section 10 to be opened or closed.

[0060] Among them, when the washing pump 4 is in working state and the first valve 12 is opened, the washing cup 102, the heat cycle inlet pipe section 10, and the heat exchanger 104 are connected in sequence; when the washing pump 4 is in non-working state and the first valve 12 is opened, the self-cleaning pipeline 23, the heat exchanger 104, the heat cycle inlet pipe section 10 and the washing cup 102 are connected in sequence, and a third valve 2 is provided on the first drainage pipeline 3. When the heat exchanger 104 is self-cleaned, the third valve 2 is closed; when water enters the washing cup 102, the third valve 2 is opened.

[0061] Specifically, the dishwasher 100 of the embodiment of the present application has the following usage scenarios:

[0062] 1) Waste heat recovery usage scenario: In this scenario, when the washing pump 4 is switched to the working state 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.

[0063] 2) Backwash scenario, in this scenario, when the washing pump 4 is switched to the non-working state and the first valve 12 is opened, the self-cleaning pipeline 23, the heat exchanger 104, the heat cycle inlet pipe section 10 and the washing cup 102 are connected in sequence to reversely flush the heat exchanger 104.

[0064] 3) The washing cup 102 is filled with water. In this scenario, the washing pump 4 is switched to a non-operating state, the third valve 2 is opened, and the first water supply pipe 1 is connected to the washing cup 102 to add water to the washing cup 102 .

[0065] Therefore, the first valve 12 can be linked with the washing pump 4, and when self-cleaning is required, the first valve 12 can be controlled to open to complete the corresponding self-cleaning process. When waste heat recovery is required, pressure is provided by the washing pump 4 to pump high-temperature sewage into the heat exchanger 104, thereby improving the intelligence level of the dishwasher 100 and enhancing the user experience.

[0066] 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 .

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] In a specific design, the length, width, and height dimensions of the heat exchanger 104 are: 240 mm, 20 mm, and 22 mm.

[0086] According to an embodiment of the present application, the dishwasher 100 has: a washing sequence, before the end of the washing sequence, the self-cleaning pipeline 23, the heat exchanger 104, the thermal circulation inlet pipe section 10 and the washing cup 102 are connected in sequence to perform self-cleaning of the heat exchanger 104; and / or the dishwasher also has: a rinsing sequence, before the end of the rinsing sequence, the self-cleaning pipeline 23, the heat exchanger 104, the thermal circulation inlet pipe section 10 and the washing cup 102 are connected in sequence to perform self-cleaning of the heat exchanger 104; and / or the dishwasher also has: a drying sequence, before the end of the drying sequence, the self-cleaning pipeline 23, the heat exchanger 104, the thermal circulation inlet pipe section 10 and the washing cup 102 are connected in sequence to perform self-cleaning of the heat exchanger 104.

[0087] That is to say, the dishwasher 100 of the embodiment of the present application cleans the heat exchanger 104 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 can flush out the dirty water in the heat exchanger 104 in time before completing the washing operation, thereby avoiding the occurrence of odor in the dishwasher 100 and improving the user experience.

[0088] 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 enhance the user experience through one or more self-cleaning.

[0089] 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 self-cleaning pipeline 23, the heat exchanger 104, the heat circulation inlet pipe section 10 and the washing cup 102 are connected in sequence to perform self-cleaning of the heat exchanger 104.

[0090] 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.

[0091] Furthermore, the first 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 flushing the heat exchanger 104 , the water diversion valve 5 is closed.

[0092] 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.

[0093] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0094] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A dishwasher, characterized in that: include: a washing box having a washing space; a washing cup having a first water inlet pipe connected to an inlet of the washing cup; a water tank adapted to supply water to the washing cup; A heat exchanger having a heat circulation pipeline and a self-cleaning pipeline for achieving heat exchange, one end of the heat circulation pipeline is connected to the washing cup, and the other end of the heat circulation pipeline is connected to the heat exchanger; one end of the self-cleaning pipeline is connected to the heat exchanger, and the other end is connected to the first water inlet pipeline.

2. The dishwasher according to claim 1, characterized in that The heat circulation pipeline has a heat circulation inlet pipe section and a heat circulation outlet pipe section, the heat circulation inlet pipe section is connected to the washing cup, one end of the heat circulation outlet pipe section is connected to the hot end outlet of the heat exchanger, and the other end of the heat circulation outlet pipe section is connected to the washing space.

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

4. The dishwasher according to claim 1, wherein Also includes: A main water inlet pipeline and a reversing valve, one end of the main water inlet pipeline is connected to a water source, and the other end is connected to a water softener, and the water softener is selectively connected to the water tank and the washing cup through the reversing valve.

5. The dishwasher according to claim 4, characterized in that The first water inlet pipeline is connected to the reversing valve and the washing cup. The self-cleaning pipeline is connected to the first water inlet pipeline and is located between the reversing valve and the washing cup.

6. The dishwasher according to claim 2, characterized in that Also includes: A first water supply pipeline and a washing pump, wherein the first water supply pipeline is connected to the outlet of the washing cup, and the washing cup is connected to the washing pump through the first water supply pipeline, one end of the heat cycle inlet pipe section is connected to the outlet of the washing pump, and the other end of the heat cycle inlet pipe section is connected to the hot end inlet of the heat exchanger.

7. The dishwasher according to claim 6, characterized in that Also includes: a first valve, the first valve being arranged on the heat circulation inlet pipe section and selectively controlling the opening or closing of the heat circulation inlet pipe section; when the washing pump is in working state and the first valve is opened, the washing cup, the heat circulation inlet pipe section and the heat exchanger are connected in sequence; when the washing pump is in non-working state and the first valve is opened, the self-cleaning pipeline, the heat exchanger, the heat circulation inlet pipe section and the washing cup are connected in sequence.

8. The dishwasher according to claim 7, characterized in that The dishwasher has a washing sequence, and before the end of the washing sequence, the self-cleaning pipeline, the heat exchanger, the heat cycle inlet pipe section and the washing cup are connected in sequence to perform self-cleaning of the heat exchanger; And / or, the dishwasher further has: a rinsing sequence, wherein before the end of the rinsing sequence, the self-cleaning pipeline, the heat exchanger, the heat circulation inlet pipe section and the washing cup are sequentially connected to perform self-cleaning of the heat exchanger; And / or, the dishwasher further has: a drying sequence, before the drying sequence ends, the self-cleaning pipeline, the heat exchanger, the heat cycle inlet pipe section and the washing cup are connected in sequence to perform self-cleaning of the heat exchanger.

9. The dishwasher according to claim 7, characterized in that The dishwasher further has a self-cleaning sequence, in which the self-cleaning pipeline, the heat exchanger, the heat cycle inlet pipe section and the washing cup are connected in sequence to perform self-cleaning of the heat exchanger.

10. The dishwasher according to claim 7, characterized in that The first water supply pipeline is provided with a third valve. When the heat exchanger is self-cleaned, the third valve is closed; when water is supplied to the washing cup, the third valve is opened.

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