Dishwasher

Abstract

The embodiment of the utility model provides a dish washing machine. The dish-washing machine comprises a washing device, a water cup, a washing pump, a steam generator and a steam nozzle. The washing device is provided with a washing cavity; the water cup is connected to the bottom of the washing device and provided with a water collecting cavity communicated with the washing cavity; the water inlet end of the washing pump is communicated with the water collecting cavity; one end of the steam generator is communicated with the water outlet end of the washing pump; the steam nozzle is arranged on the washing device, is communicated with the steam generator and the washing cavity and is used for spraying steam into the washing cavity; the water cup, the washing pump, the steam generator and the steam nozzle are sequentially communicated to form a steam generator working flow path. According to the technical scheme, the power of the original washing pump of the dish-washing machine can be utilized to supply water to the steam generator, the cost of the dish-washing machine is reduced, and the reliability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of washing equipment, in particular to a dishwasher. BACKGROUND

[0002] Nowadays, with the upgrading of consumption, users expect a more quality and healthy life, and the dishwasher, as a kitchen luxury product, is becoming more and more popular. With the development of the dishwasher industry, consumers not only have higher and higher requirements for cleaning, but also have requirements for disinfection and sterilization. Steam washing uses high-temperature steam to break down oil stains on tableware, which can better clean the tableware and at the same time achieve disinfection and sterilization.

[0003] In the related art, water is pumped to a steam generator by a water pump for generating steam, which is high in cost and consumes a lot of energy, and the system has poor reliability. CONTENT OF THE UTILITY MODEL

[0004] The dishwasher provided by the embodiments of the present application can reduce the cost of the dishwasher and improve the reliability.

[0005] The dishwasher provided by the embodiments of the present application comprises:

[0006] A washing device has a washing cavity;

[0007] A water cup is connected to the bottom of the washing device and has a water collecting cavity communicating with the washing cavity;

[0008] A washing pump is connected to the water cup, and a water inlet end of the washing pump communicates with the water collecting cavity;

[0009] A steam generator has one end communicating with a water outlet end of the washing pump and the other end communicating with the washing cavity,

[0010] A steam nozzle is arranged in the washing device, and the steam nozzle communicates with the steam generator and the washing cavity and is used for spraying steam into the washing cavity,

[0011] The water cup, the washing pump, the steam generator and the steam nozzle are sequentially communicated to form a steam generator working flow path.

[0012] In an embodiment, the dishwasher further comprises:

[0013] A one-way valve is arranged between the steam generator and the water outlet end of the washing pump and is used for allowing fluid to flow from the water outlet end of the washing pump to the steam generator in one direction.

[0014] In an embodiment, the dishwasher further comprises:

[0015] A controller is used for controlling the communication between the steam generator and the water outlet end of the washing pump to control whether the steam generator working flow path is running.

[0016] In one embodiment, the dishwasher further comprises:

[0017] a controller configured to control the steam generator working flow path to operate based on the premise that the washing pump is in an operating state.

[0018] In one embodiment, the dishwasher further comprises a water inlet valve in communication with the water cup, and the dishwasher further comprises:

[0019] a controller configured to control the steam generator working flow path to operate for providing steam to the washing cavity after water is filled in the washing cavity for a current timing in a washing program.

[0020] In one embodiment, the dishwasher further comprises:

[0021] a dispensing box provided in the washing device, the dispensing box having a storage cavity for storing a descaling agent;

[0022] a controller configured to control the descaling agent in the storage cavity to be dispensed into the water collecting cavity when the steam generator is descaled.

[0023] In one embodiment, the dishwasher further comprises:

[0024] a controller configured to execute a descaling program after a washing program is completed or after a set timing in the washing program is completed, and control the steam generator to be in communication with the water outlet end of the washing pump to descale the steam generator.

[0025] In one embodiment, the controller is further configured to execute a flushing program after the descaling program is completed, control the water inlet valve to fill water into the water cup and the steam generator to be in communication with the water outlet end of the washing pump, and control the washing pump to operate to flush the steam generator.

[0026] In one embodiment, the washing device is provided with a spraying assembly having a plurality of spraying openings, and the dishwasher further comprises:

[0027] a control valve provided between the washing pump and the steam generator;

[0028] a water distribution valve in communication with the water outlet end of the washing pump and in communication with the plurality of spraying openings, for controlling the communication between the plurality of spraying openings and the washing pump;

[0029] The steam generator is in communication with the water outlet end of the washing pump, the controller controls the water distribution valve to be closed and the control valve to be opened to connect the washing pump and the steam generator, and the controller controls the water distribution valve to be opened and the control valve to be closed to connect the washing pump and the plurality of spraying openings.

[0030] In an embodiment, the washing device is provided with a spraying assembly having a spraying opening, and the dishwasher further comprises:

[0031] A reversing valve having a water inlet, a first water outlet and a second water outlet, the water inlet being communicated with the water outlet end of the washing pump, the first water outlet being communicated with the spraying opening, and the second water outlet being communicated with the steam generator;

[0032] A controller configured to control the reversing valve to switch the water inlet to be communicated with the first water outlet or the second water outlet.

[0033] Based on the above embodiment, the steam generator is communicated with the water outlet end of the washing pump, so that the power of the original washing pump of the dishwasher can be used to supply water to the steam generator, which is beneficial to simplify the water circuit under the premise of ensuring the normal operation of the steam generator, thereby eliminating the need for an additional water pump for the steam generator, reducing the number of parts, reducing the production cost of the dishwasher, and improving the operation reliability of the dishwasher by reducing the number of parts and the failure rate. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0035] Figure 1 The structure of an embodiment of the dishwasher of the present application is shown in the figure.

[0036] Explanation of reference numerals:

[0037] 100, dishwasher; 11, washing pump; 13, water distribution valve; 30, steam generator; 31, check valve; 32, steam nozzle; 33, control valve; 40, washing device; 41, washing cavity; 43, steam inlet; 44, spraying assembly; 50, water cup; 51, water collecting cavity.

[0038] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail with reference to the accompanying drawings.

[0040] The following description of the application is merely exemplary in nature of the inventive arrangements and procedures herein described. Consequently, the description should not be in any respect considered limiting, rather, the scope of the application should be determined from the appended claims.

[0041] In the description of the present application, it should be understood that the terms "first", "second" and the like are used to describe various elements, but not necessarily indicate or imply relative importance. The above terms can be understood by those of ordinary skill in the art according to the specific meaning in the present application. In addition, in the description of the present application, "a plurality of" means two or more, unless otherwise specified. The association relationship of the associated objects is described, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the specification of the present application is only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more associated items.

[0043] Nowadays, with the upgrading of consumption, users expect a more quality and healthy life, and dishwashers are becoming more and more popular as kitchen luxury products. The dishwasher is an intelligent product that replaces manual cleaning of tableware. During the working process, the dishwasher will continuously spray and wash the tableware to achieve the purpose of cleaning the tableware. With the development of the dishwasher industry, consumers not only have higher and higher cleaning requirements, but also have requirements for disinfection and sterilization. Some dishwashers have steam washing function, which uses high-temperature steam to dissolve oil stains on tableware, which can better clean the tableware and also disinfect and sterilize. However, in the related art, the dishwasher sets up a water pump to pump water to the steam generator through the water circuit of the steam generator for steam generation, which has high cost and high energy consumption, and poor system reliability.

[0044] To solve the above problems, the present application provides a dishwasher 100. In combination Figure 1 The dishwasher 100 provided by the present application includes a box (not shown in the figure), a washing device 40, a water cup 50, a washing pump 11, a steam generator 30, a steam nozzle 32 and a controller (not shown in the figure). The washing device 40, the water cup 50, the washing pump 11, the steam generator 30, the steam nozzle 32 and the controller are all arranged in the box.

[0045] The cabinet constitutes a housing part of the dishwasher 100, and can provide installation bases for the washing device 40, the water cup 50, the washing pump 11, the steam generator 30, the controller and other devices, and plays a protection role. Meanwhile, the surface of the cabinet constitutes a main appearance surface of the dishwasher 100. Optionally, a cabinet door that can be opened and closed is arranged on one side of the cabinet, and the user can take and place tableware by opening the cabinet door.

[0046] The washing device 40 comprises an inner container and a spraying assembly 44. The inner container is arranged inside the cabinet and defines a washing cavity 41 for placing tableware. Optionally, a support can be arranged in the washing cavity 41 to place tableware and other articles. The spraying assembly 44 can be in the form of a spray head or a spraying arm and is distributed in the washing cavity 41. The spraying assembly 44 is provided with a spraying opening, and a jet is sprayed to the tableware and other articles through the spraying opening to perform rinsing.

[0047] The water cup 50 can be a semi-closed structure in the form of a groove or a cup. The water cup 50 is arranged below the washing device 40 and defines a water collecting cavity 51 that can communicate with the washing cavity 41. Fluid such as water in the washing cavity 41 can flow to the water collecting cavity 51 under the action of gravity.

[0048] The washing pump 11 is connected to the water cup 50, and the water inlet end of the washing pump 11 communicates with the water collecting cavity 51. The controller is electrically connected to the washing pump 11 and can pump out the fluid in the water collecting cavity 51 when the washing pump 11 is controlled to operate. The specification and category of the washing cavity 41 are not described in detail herein.

[0049] The water outlet end of the washing pump 11 selectively communicates with the spraying opening. Under the control of the controller, the washing pump 11 can pump the water in the water collecting cavity 51 to the spraying opening to be sprayed out, so as to clean the tableware and other articles in the washing cavity 41.

[0050] In the embodiment, the steam generator 30 also communicates with the water outlet end of the washing pump 11. The controller is further configured to control the communication between the steam generator 30 and the water outlet end of the washing pump 11. When the controller controls the steam generator 30 to communicate with the water outlet end of the washing pump 11, the washing pump 11 can pump out the fluid in the water collecting cavity 51 to the steam generator 30. The steam generator 30 heats the fluid to generate steam, and the steam enters the washing cavity 41 to perform sterilization and disinfection on the tableware and other articles in the washing cavity 41.

[0051] Exemplarily, the steam generator 30 comprises a heating cavity and a heating element such as a thick-film heating plate, a PTC or a heating tube arranged in the heating cavity. The water inlet end of the heating cavity communicates with the water outlet end of the washing pump 11, and the heating cavity communicates with the washing cavity 41, so that the generated steam can enter the washing cavity 41.

[0052] The steam nozzle 32 is connected to the washing device 40. For example, the washing device 40 has a steam inlet 43 communicating with the washing cavity 41, and the steam nozzle 32 is arranged at the steam inlet 43. The steam nozzle 32 has an inlet end and an outlet end, the inlet end communicates with the steam generator 30, and the outlet end communicates with the washing cavity 41. When the steam generator 30 generates steam, the steam can flow into the washing cavity 41 through the steam nozzle 32. Optionally, the outlet end of the steam nozzle 32 faces the washing cavity 41, and has a plurality of steam outlets facing different directions, so that the steam sprayed by the steam nozzle 32 can be more uniformly distributed in the washing cavity 41, ensuring the sterilization effect.

[0053] It can be understood that during the descaling process, the flow passing through the steam generator 30 can also flow into the washing cavity 41 through the steam nozzle 32. Since the washing cavity 41 communicates with the water collecting cavity 51, the fluid entering the washing cavity 41 falls into the water collecting cavity 51. In an embodiment, the dishwasher 100 further comprises a filtering device arranged in the water collecting cavity 51, which is used to filter the fluid flowing from the washing cavity 41 into the water collecting cavity 51. During the descaling and spraying cleaning processes, the filtering of the fluid can reduce or avoid the circulation of scale or other impurities with the water flow, reduce pollution, and facilitate cleaning.

[0054] In combination Figure 1 , the water cup 50, the washing pump 11, the steam generator 30, and the steam nozzle 32 form a steam generator 30 working flow path in sequence. When the dishwasher 100 of the embodiment of the present application performs the rinsing of tableware, the water circulates from the water collecting cavity 51, the washing pump 11, the spraying assembly 44, the washing cavity 41, and the water collecting cavity 51; and when the steam sterilization and disinfection are performed, the fluid circulates along the steam generator 30 working flow path from the water collecting cavity 51, the washing pump 11, the steam generator 30, and the washing cavity 41. Optionally, in some embodiments, the rinsing operation and the steam disinfection operation of the dishwasher 100 are not performed at the same time to avoid insufficient water supply.

[0055] In this way, the steam generator 30 of the present application is connected to the water outlet end of the washing pump 11, and the controller controls the connection of the steam generator 30 and the water outlet end of the washing pump 11, so that the washing pump 11 is used as a water supply for the steam generator 30. On the premise of ensuring the normal operation of the steam generator 30, the water path is simplified, and a water pump is not needed for the steam generator 30, reducing the number of parts, not only reducing the material cost, but also reducing the failure rate by reducing the number of parts, and improving the operation reliability of the dishwasher 100.

[0056] The controller is configured to control the communication between the steam generator 30 and the water outlet end of the washing pump 11 to control whether the steam generator 30 working flow path is in operation. Further, the controller controls the steam generator 30 working flow path to be in operation on the premise that the washing pump 11 is in operation to avoid dry burning of the steam generator 30. Alternatively, the controller can determine whether the washing pump 11 is in operation based on a voltage signal of the washing pump 11 or flow information of the fluid in the washing pump 11, which will not be described in detail herein.

[0057] In some embodiments, the washing program of the dishwasher 100 includes pre-washing, main washing, rinsing, and drying time sequences. The pre-washing is used to simply flush away large food residues attached to the surface of the tableware to avoid clogging the spray port. During the main washing, the spray assembly 44 starts to work, and the high-speed water jet impacts the tableware to effectively break down stubborn stains such as oil stains and protein. After the main washing, the rinsing operation is performed to flush away the residues and preliminarily sterilize and disinfect. After the rinsing, the drying time sequence is entered to avoid water stains from breeding bacteria and keep the tableware dry and clean.

[0058] In some washing time sequences, such as the main washing and rinsing time sequences, water needs to be supplied to the water cup 50. In the embodiments of the present application, after the controller completes the water supply for the current time sequence in the washing program, the controller controls the steam generator 30 working flow path to be in operation and controls the steam generator 30 to start working to supply steam to the washing cavity 41. That is, after the water supply, steam is supplied to the washing cavity 41, which can ensure sufficient water and steam quantity and sterilization and disinfection effect on one hand, and on the other hand, the steam generator 30 can use clean water to generate steam, which avoids the pollution of the water path of the steam generator 30 by supplying water to the steam generator 30 during the cleaning process of the washing program, thereby avoiding the blockage of the steam generator 30 and prolonging the service life of the steam generator 30.

[0059] In some embodiments, the dishwasher 100 further includes a one-way valve 31 arranged between the steam generator 30 and the water outlet end of the washing pump 11, which is configured to allow the fluid to flow from the water outlet end of the washing pump 11 to the steam generator 30 in one direction, thereby facilitating the flow of the fluid along the water collecting cavity 51-washing pump 11-steam generator 30-washing cavity 41, avoiding the backflow of steam when the steam generator 30 works to generate steam, and ensuring that the steam can enter the washing cavity 41.

[0060] The longer the dishwasher 100 is used, the more scale accumulates in the steam generator 30 and the rest of the pipeline, causing the waterway to be blocked and not flow well. When it is detected that the steam generator 30 is blocked to a certain extent, a descaling operation needs to be performed. For example, the dishwasher 100 further comprises a temperature sensor arranged at the steam generator 30, and when the steam generator 30 is blocked, the temperature at the steam generator 30 will continue to rise, and when it is monitored that the temperature is higher than a temperature threshold, the controller determines that a descaling operation needs to be performed.

[0061] In the embodiment of the application, the water cup 50 is further provided with a communication port communicating with the water collecting cavity 51, and the descaling agent can be poured into the water collecting cavity 51 through the communication port. When the controller is configured to execute the descaling program, the steam generator 30 is controlled to communicate with the water outlet end of the washing pump 11. In this way, the water flow with the descaling agent flows along the water collecting cavity 51-washing pump 11-steam generator 30-washing cavity 41, thereby performing a descaling operation on the steam generator 30 and the pipeline along the way. Understandably, when the descaling program is executed, multiple cycles can be performed according to the above flow path to ensure that the descaling operation is complete.

[0062] Therefore, the dishwasher 100 of the application pumps the fluid in the water collecting cavity 51 to the steam generator 30 through the washing pump 11, the steam generator 30 communicates with the washing cavity 41 to supply steam to the washing cavity 41, thereby forming a flow path of the water collecting cavity 51-washing pump 11-steam generator 30-washing cavity 41. The water collecting cavity 51 communicates with the washing cavity 41, and the embodiment of the application further communicates the descaling agent into the water collecting cavity 51 through the communication port arranged in the water collecting cavity 51, so that the descaling agent can flow along the above flow path, thereby performing a descaling operation on the steam generator 30 and the related pipeline, and the descaling effect is good and convenient and fast. The fluid after descaling will also be collected in the water collecting cavity 51, which is convenient for discharging and supplementing new water, and avoids polluting the steam generator 30. In this way, the dishwasher 100 of the embodiment of the application can effectively solve the problem of blockage of the steam generator 30, guarantee the normal use of the dishwasher 100, and improve the reliability.

[0063] Optionally, the communication port is directly open to the washing cavity 41, and the user can directly manually add the descaling agent into the water collecting cavity 51 through the communication port when opening the box door.

[0064] Or in another embodiment, the dishwasher 100 further comprises a dispensing box. The dispensing box is connected to the water cup 50 and has a storage cavity for storing the descaling agent, and the storage cavity selectively communicates with the communication port. The controller is further configured to control the communication between the storage cavity and the communication port, and is configured to communicate the storage cavity with the communication port during descaling, so that the descaling agent enters the water collecting cavity 51 through the communication port. For example, the dispensing box is arranged on one side of the water cup 50, and a valve controlled by the controller is arranged between the two. During descaling, the controller controls the valve 33 to make the storage cavity and the communication port conductive. In this way, by arranging the dispensing box, the descaling operation can be performed multiple times after filling the storage cavity once, so as to reduce the user's frequent operation of adding descaling agent to the storage cavity; moreover, the controller of the present application automatically dispenses the descaling agent into the water collecting cavity 51, which reduces the user's labor intensity and improves the intelligent level of the dishwasher 100 and the user experience.

[0065] Further, the dishwasher 100 further comprises a detection device arranged in the dispensing box, for detecting the amount of descaling agent in the storage cavity, so that the user can know the current amount of descaling agent and replenish the descaling agent in time. Optionally, the detection device comprises at least one of a Hall detection assembly, a float type detection assembly and an electrode type detection assembly. For example, when the detection device is an electrode type detection assembly, the electrode type detection assembly is a device for detecting the liquid level by using the conductivity of the liquid. The electrode type detection assembly comprises a probe, and a plurality of probes are arranged in the dispensing box at different liquid levels. When the liquid surface of the descaling agent touches the probe, the probe will send a detection signal, and different detection signals correspond to different liquid levels, so that the current liquid level of the descaling agent can be determined.

[0066] It should be noted that the descaling operation can be started and run by the user sending a signal to the controller, or the controller can automatically run the program according to the temperature sensor. During descaling, the controller is configured to control the steam generator 30 to communicate with the water outlet end of the washing pump 11 when the water collecting cavity 51 is filled with the descaling agent. The dishwasher 100 can be provided with a pH sensor in the water collecting cavity 51, which can detect the pH of the fluid in the water collecting cavity 51 to determine whether the descaling agent is added. Of course, the dishwasher 100 can also use other judgment methods, and the embodiments of the present application are not limited in this regard.

[0067] In some embodiments, the controller is configured to execute a descaling program after the completion of the washing program or after a set timing in the washing program, and control the communication between the steam generator 30 and the water outlet end of the washing pump 11 to descale the steam generator 30. For example, the descaling program is executed after the last timing of the washing program, such as the drying timing, of the dish washing machine 100, so that the descaling is performed after the completion of a washing program, which can avoid the influence of the descaling agent on the washing process. For another example, the descaling program can be executed at a set timing of the washing program, such as between the end of the main washing timing and the start of the rinsing timing, or between the end of the rinsing timing and the start of the drying timing.

[0068] It can be understood that the descaling agent is generally an acidic material, and the detergent added in the main washing timing of the washing program can be an alkaline material. In order to avoid the acid-base neutralization reaction between the descaling agent and the detergent and affect the cleaning effect, the controller is further configured to execute a flushing program after the completion of the descaling program, and control the communication between the steam generator 30 and the water outlet end of the washing pump 11 to flush the steam generator 30. Specifically, after the completion of the descaling program, the water containing the descaling agent is discharged, the dish washing machine 100 is filled with water again, and the water flow is circulated along the water collection cavity 51-washing pump 11-steam generator 30-washing cavity 41 to perform flushing, and the circulation is repeated for multiple times and then discharged, so as to effectively avoid the residue of the descaling agent and ensure the cleaning effect.

[0069] The dish washing machine 100 of the present application will be further explained below according to the flow direction of the fluid:

[0070] In some embodiments of the present application, the dish washing machine 100 further comprises a fresh water treatment assembly, which comprises a water inlet valve and a water softener. One end of the water inlet valve is connected to a water source, and the other end is connected to the water softener. The controller is also used to control the water inlet valve, so that when the water inlet valve is opened, the water source supplies water to the water softener, and when the water inlet valve is closed, the water source stops supplying water to the water softener. The water source can be a tap, a municipal pipeline or a water storage device.

[0071] The water softener is selectively connected to the water collection cavity 51. The water softener can be used to remove calcium and magnesium ions in the water, so that the calcium and magnesium ions in the water are reduced. The water softener has a resin cavity, a regeneration cavity and a switching valve. The resin cavity and the regeneration cavity are connected, and the resin cavity and the regeneration cavity are also connected to the switching valve, which can be controlled by the controller. Through the reversing operation of the switching valve, it is determined whether the water passes through the regeneration cavity. When the water does not pass through the regeneration cavity and directly enters the resin cavity, the ion exchange resin in the resin cavity removes the calcium and magnesium ions in the water to reduce the water hardness. When the water passes through the regeneration cavity and then enters the resin cavity, on the one hand, the water is softened in the resin cavity, and on the other hand, the water passing through the regeneration cavity regenerates the resin in the resin cavity.

[0072] The softened water is supplied to the water collecting cavity 51 and flows from the water collecting cavity 51 to the spray nozzles and the steam generator 30 under the action of the washing pump 11. Specifically, in an embodiment, the dishwasher 100 further comprises a reversing valve. The reversing valve has a water inlet, a first water outlet and a second water outlet, wherein the water inlet is connected to the water outlet end of the washing pump 11, the first water outlet is connected to the spray nozzles, and the second water outlet is connected to the steam generator 30. The controller is further configured to control the reversing valve to connect the water inlet to the first water outlet or the second water outlet. When the controller controls the reversing valve to connect the water inlet to the first water outlet, the water flows in a cycle of the water collecting cavity 51 - the washing pump 11 - the spray assembly 44 - the washing cavity 41 - the water collecting cavity 51; and when the controller controls the reversing valve to connect the water inlet to the second water outlet, the water flows in a cycle of the water collecting cavity 51 - the washing pump 11 - the steam generator 30 - the washing cavity 41. In the embodiment, the controller is further configured to control the reversing valve to connect the water inlet to the second water outlet when the water collecting cavity 51 is supplied with the descaling agent, so that the descaling agent can flow through the steam generator 30 in the cycle of the water collecting cavity 51 - the washing pump 11 - the steam generator 30 - the washing cavity 41 to perform the descaling operation on the steam generator 30 and the associated pipeline. The embodiment can flexibly switch between the two water paths by controlling the reversing valve, which is convenient to control and has a low cost.

[0073] When the spray assembly 44 has multiple spray arms, the water collecting cavity 51 needs to branch out multiple pipelines to be connected to multiple groups of spray nozzles of the multiple spray arms. In an embodiment, the dishwasher 100 further comprises a water distribution valve 13 connected to the water collecting cavity 51 and connected to the multiple pipelines to be connected to the multiple groups of spray nozzles to complete the distribution of the water and control the connection of the multiple groups of spray nozzles to the washing pump 11.

[0074] In combination Figure 1 In another embodiment, the dishwasher 100 can further separately provide a control valve 33 arranged between the water cup 50 and the steam generator 30 to control the connection of the water collecting cavity 51 to the steam generator 30, and the controller is further configured to connect the water collecting cavity 51 to the steam generator 30 by opening the control valve 33. The control valve 33 is used to separately control the connection of the steam generator 30, and the water path structure is simpler and has a lower cost. In the structure in which the control valve 33 and the water distribution valve 13 are provided at the same time, the steam generator 30 is connected to the water outlet end of the washing pump 11 at the upstream end of the water distribution valve 13, such as being directly connected to the water outlet end of the washing pump 11 and the flow path of the water distribution valve 13 in a bypass manner through the control valve 33, which has a simpler structure, is easy to install and implement, and has a lower design cost. In combination Figure 1For the structure in which the control valve 33 and the water distribution valve 13 are arranged simultaneously, the controller controls the water distribution valve 13 to be closed and the control valve 33 to be opened to connect the washing pump 11 and the steam generator 30; and the controller controls the water distribution valve 13 to be opened and the control valve 33 to be closed to connect the washing pump 11 and the multiple groups of spray nozzles.

[0075] In the embodiment, the water cup 50 is further provided with a water outlet communicating with the water collecting cavity 51, and the dishwasher 100 further comprises a water drainage pump connected with the water cup 50 and selectively communicating with the water outlet. The controller is further configured to control the communication between the water drainage pump and the water outlet. After the descaling is completed, the controller controls the water drainage pump to operate so that the water drainage pump communicates with the water outlet, thereby timely draining the water in the water collecting cavity 51, reducing pollution, and reducing the labor intensity of the user and improving the user experience through the control of the controller.

[0076] In the drawings of the embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms “upper”, “lower”, “left”, “right” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present application, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0077] The above is only a preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A dishwasher, characterized in that The washing device comprises: a washing device having a washing cavity; a water cup connected to the bottom of the washing device and having a water collecting cavity communicating with the washing cavity; a washing pump connected to the water cup, the water inlet end of the washing pump communicating with the water collecting cavity; a steam generator having one end communicating with the water outlet end of the washing pump and the other end communicating with the washing cavity, a steam nozzle provided in the washing device, the steam nozzle communicating with the steam generator and the washing cavity, and used for spraying steam into the washing cavity, the water cup, the washing pump, the steam generator and the steam nozzle sequentially communicate to form a steam generator working flow path.

2. The dishwasher according to claim 1, characterized in that Further comprising: a one-way valve arranged between the steam generator and the water outlet end of the washing pump, for allowing fluid to flow from the water outlet end of the washing pump to the steam generator in one direction.

3. The warewashing machine of claim 1, wherein, Further comprising: a controller for controlling the communication between the steam generator and the water outlet end of the washing pump to control whether the steam generator working flow path is running.

4. The warewashing machine of claim 1, wherein, Further comprising: a controller configured to control the steam generator working flow path to run on the premise that the washing pump is in a running state.

5. The warewashing machine of claim 1, wherein, Further comprising a water inlet valve, the water inlet valve communicating with the water cup, and the dishwasher further comprising: a controller configured to control the steam generator working flow path to run for providing steam to the washing cavity after water is filled in the current timing in the washing program.

6. The warewashing machine of claim 1, wherein, Further comprising: a dispensing box provided in the washing device, the dispensing box having a storage cavity for storing a descaling agent; a controller configured to control the descaling agent in the storage cavity to be dispensed into the water collecting cavity when the steam generator is descaled.

7. The warewashing machine of claim 5, wherein, Further comprising: a controller configured to perform a descaling program after completing the washing program or after completing a set timing in the washing program, and control the communication between the steam generator and the water outlet end of the washing pump to descale the steam generator.

8. The warewash machine of claim 7, wherein, The controller is further configured to perform a flushing program after the descaling program is completed, control the water inlet valve to fill water into the water cup and control the steam generator to communicate with the water outlet end of the washing pump, and control the washing pump to run to flush the steam generator.

9. The warewash machine of claim 8, wherein, The washing device is provided with a spraying assembly having a plurality of spraying ports, and the dishwasher further comprises: a control valve arranged between the washing pump and the steam generator; a water distribution valve communicating with the water outlet end of the washing pump and communicating with a plurality of spraying ports, for controlling the communication between the plurality of spraying ports and the washing pump; The steam generator communicates with the water outlet end of the washing pump, the controller controls the water distribution valve to be closed and the control valve to be opened to connect the washing pump and the steam generator; and the controller controls the water distribution valve to be opened and the control valve to be closed to connect the washing pump and the plurality of spraying ports.

10. The warewashing machine of claim 1, wherein, The washing device is provided with a spraying assembly having a spraying port, and the dishwasher further comprises: The reversing valve has a water inlet, a first water outlet and a second water outlet, the water inlet is communicated with the water outlet end of the washing pump, the first water outlet is communicated with the spray port, and the second water outlet is communicated with the steam generator. The controller is configured to control the reversing valve, so that the water inlet is switched to be communicated with the first water outlet and the second water outlet.

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