Dishwasher

Abstract

The embodiment of the utility model provides a dish washing machine. The dishwasher comprises a water tank, a steam generator and a washing device. The water tank is provided with a containing cavity and a water outlet communicated with the containing cavity. The steam generator is communicated with the water outlet hole; the washing device is provided with a washing cavity, the washing cavity is provided with a steam inlet, and the steam inlet is communicated with the steam generator; in the height direction of the dish-washing machine, the water outlet hole and the steam inlet are both higher than the steam generator so as to form a communicating vessel structure together with the steam generator. According to the technical scheme, the use reliability of the dish washing machine can be 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 also disinfect and sterilize.

[0003] In the related art, a water pump is used to pump water to a steam generator for generating steam. Once the water pump fails to work, steam cannot be generated, which affects the service life of the steam generator and the system reliability is poor. CONTENT OF THE UTILITY MODEL

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

[0005] The dishwasher provided by the embodiments of the present application has the characteristics that it comprises:

[0006] The water tank has a containing cavity and a water outlet hole communicating with the containing cavity;

[0007] The steam generator is in communication with the water outlet hole; and

[0008] The washing device has a washing cavity, and the washing cavity has a steam inlet, which is in communication with the steam generator;

[0009] In the height direction of the dishwasher, the water outlet hole and the steam inlet are both higher than the steam generator, so as to form a communicating vessel structure together with the steam generator.

[0010] In an embodiment, the dishwasher further comprises:

[0011] The one-way valve is arranged between the water tank and the steam generator, and is used to make the fluid flow from the water outlet hole to the steam generator in one direction.

[0012] In an embodiment, the water outlet hole is in communication with the containing cavity at the bottom of the containing cavity, and in the height direction of the dishwasher, the position of the steam inlet is higher than the position of the water outlet hole.

[0013] In an embodiment, the dishwasher further comprises:

[0014] The base is used to support the washing device, the washing device comprises an inner container for forming the washing cavity, the water tank is connected to the side wall of the inner container, and the steam generator is arranged on the base.

[0015] In one embodiment, the dishwasher further comprises:

[0016] a steam nozzle connected to the washing device, the washing device comprising an inner container for forming the washing cavity, the steam nozzle being mounted on a side wall of the inner container and located at the steam inlet, the steam nozzle being connected to the steam generator and the washing cavity for spraying steam into the washing cavity.

[0017] In one embodiment, the water tank is further provided with a ventilation hole, the ventilation hole being connected to the washing cavity and being spaced apart from the water outlet hole in the height direction of the dishwasher.

[0018] In one embodiment, the steam inlet is higher than the ventilation hole in the height direction of the dishwasher.

[0019] In one embodiment, the washing device is provided with a water cup, the water cup having a water collecting cavity, and the dishwasher further comprises:

[0020] a water inlet valve; and

[0021] a three-way assembly having a first water port, a second water port and a third water port, the first water port being connected to the water inlet valve, and the second water port and the third water port being connected to the water tank and the water cup respectively.

[0022] In one embodiment, the dishwasher further comprises: a first communication pipe having one end connected to the second water port and the other end connected to the containing cavity; and

[0023] a second communication pipe having one end connected to the third water port and the other end connected to the water collecting cavity.

[0024] In one embodiment, the inner diameter of the first communication pipe is greater than the inner diameter of the second communication pipe.

[0025] In one embodiment, the dishwasher further comprises:

[0026] a cleaning agent box provided in the washing device for containing cleaning agent, the cleaning agent box being connected to the water tank;

[0027] a cleaning valve provided between the cleaning agent box and the water tank for controlling the opening and closing of the cleaning agent box and the containing cavity; and

[0028] a controller configured to open the cleaning valve when the steam generator needs to be cleaned.

[0029] Based on the above embodiment, in the embodiment of the present application, the steam generator is connected to the containing cavity through the water outlet hole on the water tank, and is connected to the washing cavity through the steam inlet of the washing device. By setting the steam generator below the water outlet hole and the steam inlet, and connecting the intermediate connecting pipeline, a communicating vessel structure is formed, so that the water in the water tank can flow to the steam generator without the action of the water pump. Compared with the related art of setting a water pump to supply water to the steam generator, the technical solution of the embodiment of the present application does not need to set a water pump, reduces the number of parts, reduces the cost, and also reduces the overall risk of part failure. In the case that the water tank has water, the communicating vessel structure can ensure that the steam generator has water flow when it works, avoiding dry burning, so as to avoid the damage or shortening of service life of the steam generator caused by the inactivity of the water pump, prolong the service life of the steam generator, and improve the overall use reliability of the dishwasher. BRIEF DESCRIPTION OF DRAWINGS

[0030] 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 description of the embodiments or the prior art 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.

[0031] Figure 1 The structure schematic diagram of an embodiment of the dishwasher of the present application;

[0032] Figure 2 The structure schematic diagram of another embodiment of the dishwasher of the present application.

[0033] Explanation of reference numerals:

[0034] 100, dishwasher; 10, water inlet valve; 20, water tank; 21, containing cavity; 22, water outlet hole; 23, air vent; 30, steam generator; 31, one-way valve; 32, steam nozzle; 40, washing device; 41, washing cavity; 43, steam inlet; 50, water cup; 51, water collecting cavity; 70, cleaning agent box; 71, cleaning valve; 80, first connecting pipe; 81, second connecting pipe.

[0035] 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

[0036] 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 drawings.

[0037] 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, as the application is capable of considerable modification. The drawings are not to scale and, in some instances, proportions have been exaggerated in order more clearly to depict certain features. It is also to be understood that the description and specific examples, while indicating preferred embodiments of the applications, are given by way of illustration only, since various changes and modifications within the spirit and scope of the applications can become apparent to those skilled in the art from this detailed description.

[0038] 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 the relative importance of the elements. The above terms can be understood by those skilled 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 kinds of relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0039] 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 description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0040] 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 dishwashing. During the working process, the dishwasher will continuously spray and wash the dishes to achieve the purpose of cleaning the dishes. 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. Steam washing uses high-temperature steam to break down oil stains on dishes, which can better clean the dishes and also has the effect of disinfection and sterilization.

[0041] In the related art, the dishwasher draws water to the steam generator by the water pump to generate steam. Once the water pump cannot work, the steam cannot be generated, which affects the service life of the steam generator and the system reliability is poor.

[0042] To solve the above problems, the embodiments of the present application provide a dishwasher 100. In combination with Figure 1 and Figure 2 The dishwasher 100 provided by the present application includes a box body (not shown in the figure), a washing device 40, a water tank 20, a steam generator 30 and a controller (not shown in the figure). The washing device 40, the water tank 20, the steam generator 30 and the controller are all arranged in the box body.

[0043] The cabinet constitutes a housing part of the dishwasher 100, and can provide a mounting base for the washing device 40, the water tank 20, the steam generator 30, the controller and other devices, and also plays a protection role. Meanwhile, the surface of the cabinet constitutes a main appearance surface of the dishwasher 100. Optionally, a side of the cabinet is provided with a cabinet door which can be opened and closed. By opening the cabinet door, a user can take and place tableware.

[0044] Optionally, the washing device 40 comprises an inner container and a spraying assembly. 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 can be in the form of a spray head or a spraying arm and is distributed in the washing cavity 41. The spraying assembly is provided with a spraying opening through which a jet is sprayed to the tableware and other articles for rinsing. The washing device 40 is further provided with a steam inlet 43 which communicates with the washing cavity 41, and the steam generator 30 communicates with the steam inlet 43.

[0045] The water tank 20 can be connected to one side of the washing device 40 and is used to connect to an external water source to store water. The material and shape of the water tank 20 are not limited here, and the water tank 20 has an accommodating cavity 21 formed therein and is provided with a water outlet hole 22 which communicates with the accommodating cavity 21. Understandably, water in the accommodating cavity 21 can flow out of the water outlet hole 22.

[0046] The steam generator 30 communicates with the water outlet hole 22, and water in the water tank 20 flows from the water outlet hole 22 to the steam generator 30. The steam generator 30 heats the fluid to generate steam, and the steam enters the washing cavity 41 through the steam inlet 43 to perform sterilization and disinfection on the tableware and other articles in the washing cavity 41. Exemplarily, the steam generator 30 comprises a heating cavity and a heating element such as a thick-film heating plate, a PTC, a heating tube and the like arranged in the heating cavity. The water inlet end of the heating cavity communicates with the water outlet hole 22, and the water outlet end of the heating cavity communicates with the steam inlet 43, so that the generated steam can enter the washing cavity 41.

[0047] In the embodiment, in the height direction of the dishwasher 100, the water outlet hole 22 and the steam inlet 43 are both higher than the steam generator 30, so as to jointly constitute a communicating vessel structure with the steam generator 30. Based on the communicating vessel structure, when the water level in the water tank 20 is higher than the water outlet hole 22, due to the lower height of the steam generator 30, the water in the water tank 20 can flow out of the water outlet hole 22 to the steam generator 30 under the action of gravity and atmospheric pressure. In this way, the water can flow to the steam generator 30 without using a water pump.

[0048] That is to say, when the dishwasher 100 performs steam sterilization and disinfection, the fluid flows along the flow path of the accommodating cavity 21-steam generator 30-washing cavity 41.

[0049] Thus, in the embodiment of the present application, the steam generator 30 is connected to the containing cavity 21 through the water outlet hole 22 on the water tank 20, and is connected to the washing cavity 41 through the steam inlet 43 of the washing device 40. By arranging the steam generator 30 to be lower than the water outlet hole 22 and the steam inlet 43, and by arranging an intermediate connecting pipeline, a communicating vessel structure is formed, so that the water in the water tank 20 can flow to the steam generator 30 without the action of a water pump. Compared with the related art in which a water pump is arranged to supply water to the steam generator 30, the technical solution of the embodiment of the present application does not need to arrange a water pump, thereby reducing the number of parts, reducing the cost, and reducing the overall risk of part failure. In the case that the water tank 20 has water, the communicating vessel structure can ensure that water flows when the steam generator 30 is working, thereby avoiding dry burning, so as to avoid the damage or shortened service life of the steam generator 30 caused by the inactivity of the water pump, prolong the service life of the steam generator 30, and improve the overall use reliability of the dishwasher 100.

[0050] Optionally, the box body is formed with a base, and the base is used to support the washing device 40. In the embodiment of the present application, the water tank 20 is connected to the side wall of the inner container, and the steam generator 30 is arranged on the base. Thus, in the height direction of the dishwasher 100, the position of the water tank 20 is higher than the position of the steam generator 30, which facilitates the flow of water in the water tank 20 to the steam generator 30, and is easy to form a communicating vessel structure.

[0051] In combination Figure 1 In an embodiment, the dishwasher 100 further comprises a one-way valve 31. The one-way valve 31 is arranged between the water tank 20 and the steam generator 30, and is used to make the fluid flow from the water outlet hole 22 to the steam generator 30 in one direction, thereby facilitating the flow of fluid along the containing cavity 21-steam generator 30-washing cavity 41, avoiding the backflow of steam when the steam generator 30 works to generate steam, so that the steam can enter the washing cavity 41, and facilitating the flow of water in the containing cavity 21 to the steam generator 30, thereby ensuring the water replenishment effect of the water tank 20 to the steam generator 30.

[0052] In some embodiments, the water outlet hole 22 is in communication with the containing cavity 21 at the bottom of the containing cavity 21, and the position of the steam inlet 43 is higher than that of the water outlet hole 22 in the height direction of the dishwasher 100. Specifically, the water outlet hole 22 can be formed on the bottom wall of the water tank 20, and the pipeline connecting the water outlet hole 22 and the steam generator 30 is connected to the bottom of the water tank 20. The shape of the water outlet hole 22 is not limited in the embodiments of the present application, which can adopt a square hole or a circular hole structure. The water outlet hole 22 arranged at the bottom of the containing cavity 21 can more facilitate the discharge of water in the containing cavity 21, and can empty the containing cavity 21 as much as possible, promote water circulation, and avoid that part of the water remains in the containing cavity 21 to affect the water quality. Of course, the water outlet hole 22 can also communicate with the containing cavity 21 from the side wall of the water tank 20, which is not limited in the embodiments of the present application as long as water can be ensured above the water outlet hole 22.

[0053] In combination Figure 1 In an embodiment, the dishwasher 100 further comprises a steam nozzle 32 arranged at the steam inlet 43 and mounted on the side wall of the inner container. It can be understood that the steam nozzle 32 has an air inlet end and an air outlet end, the air inlet end is in communication with the steam generator 30, and the air outlet end is in communication with the washing cavity 41. When the steam generator 30 works to generate steam, the steam can flow into the washing cavity 41 through the steam nozzle 32. Optionally, the air 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 and disinfection effect.

[0054] When the steam generator 30 does not work, the dishwasher 100 can also supply water to the washing cavity 41 through the water tank 20-steam generator 30-steam nozzle 32, which will not be described in detail here.

[0055] In order to connect the water tank 20 with the atmosphere, the water tank 20 is further provided with a vent hole 23 in communication with the washing cavity 41. Optionally, the water tank 20 can be arranged on one side of the washing device 40, and the vent hole 23 can be formed on the side wall of the water tank 20 and arranged spaced apart from the water outlet hole 22 in the height direction of the dishwasher 100. When the water in the water tank 20 is too much, the vent hole 23 can also be used to overflow the fluid in the containing cavity 21 higher than the vent hole 23 to the washing cavity 41, so that the water level in the containing cavity 21 can be kept below the vent hole 23, avoiding that too much water causes the structure of the water tank 20 to be damaged.

[0056] Further, in the height direction of the dishwasher 100, the steam inlet 43 is higher than the air vent 23. It can be understood that, in the process of supplementing water to the water tank 20 to a water level higher than the air vent 23 through the steam generator 30 when the steam generator 30 is not working, the fluid in the containing cavity 21 higher than the air vent 23 can not only overflow to the washing cavity 41 through the air vent 23, but also flow into the washing cavity 41 through the steam inlet 43 based on the principle of communicating vessels. In combination with the foregoing, when the water level in the containing cavity 21 is maintained below the air vent 23 by the air vent 23, the water in the connecting pipeline between the steam generator 30 and the steam inlet 43 is also maintained at the same water level, avoiding water leakage. When the steam generator 30 is working, steam flows into the washing cavity 41 from the steam inlet 43, and even if the air vent 23 overflows water into the washing cavity 41 at this time, the steam flow will not be disturbed because the steam inlet 43 is higher than the air vent 23, ensuring that the steam can be smoothly discharged to the washing cavity 41.

[0057] As shown in FIG. 1, Figure 1 In some embodiments of the present application, the dishwasher 100 further comprises a water inlet valve 10 and a water softener. One end of the water inlet valve 10 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 10. When the water inlet valve 10 is opened, the water source supplies water to the water softener. When the water inlet valve 10 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.

[0058] The water softener is connected to the containing cavity 21. The water softener can be used to remove calcium and magnesium ions in water, so that the content of calcium and magnesium ions in water is 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 calcium and magnesium ions in the water, reducing 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.

[0059] However, even if the water is softened by the water softener, as the dishwasher 100 is used for a longer time, the scale or impurities in the steam generator 30 and the remaining pipelines will accumulate and cause the waterway to be blocked and not flow smoothly, so that cleaning operation is needed.

[0060] As shown in FIG. 1, Figure 2As shown, in some embodiments, the dishwasher 100 further comprises a cleaning agent box 70. The cleaning agent box 70 is connected to the washing device 40 and has a storage cavity for storing cleaning agent, which is selectively communicated with the containing cavity 21. The controller is further configured to control the communication between the storage cavity and the containing cavity 21, and is configured to make the storage cavity communicated with the containing cavity 21 when the steam generator 30 needs to be cleaned. For example, the cleaning agent box 70 is arranged on the top of the washing device 40, and a cleaning valve 71 controlled by the controller is arranged between the two. During cleaning, the controller controls the cleaning valve 71 to make the storage cavity communicated with the containing cavity 21, and when the storage cavity is communicated with the containing cavity 21, the cleaning agent can flow into the containing cavity 21 under the action of gravity. Of course, in some other structural forms, the cleaning agent box 70 can also be arranged at other positions of the dishwasher 100, and the cleaning agent can be delivered to the containing cavity 21 by pumping. In this way, by adding cleaning agent into the containing cavity 21, the cleaning agent flows along the flow direction of the containing cavity 21-steam generator 30-washing cavity 41, and the steam generator 30 and the pipeline along the way are cleaned, which effectively keeps the pipeline clean and sanitary and helps to solve the problem of blockage, thereby improving the reliability of the dishwasher 100. By arranging the cleaning agent box 70, the cleaning operation can be performed for a long time after the storage cavity is filled once, so as to reduce the operation of the user to add cleaning agent into the storage cavity frequently; and in this embodiment of the present application, the controller automatically adds cleaning agent into the containing cavity 21, which reduces the labor intensity of the user and improves the intelligent level of the dishwasher 100 and the user experience.

[0061] Further, the dishwasher 100 further comprises a detection device arranged in the cleaning agent box 70, which is used to detect the amount of cleaning agent in the storage cavity, so as to enable the user to know the current amount of cleaning agent and supplement the cleaning 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 probes, and a plurality of probes are arranged at different liquid levels in the cleaning agent box 70. When the liquid surface of the cleaning 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 cleaning agent can be determined.

[0062] Of course, in addition to program control, the user can also manually add cleaning agent into the water tank 20, which is convenient and fast, and the embodiments of the present application do not limit this.

[0063] In some embodiments, the dishwasher 100 further comprises a water cup 50. The water cup 50 can be a semi-closed structure arranged in a trough or cup shape. The water cup 50 is arranged below the washing device 40 and defines a water collecting cavity 51. The water collecting cavity 51 can be in communication with the fluid, such as water, in the washing cavity 41, which can flow from the washing cavity 41 to the water collecting cavity 51 under the action of gravity. The water collecting cavity 51 is also used to supply water to the washing cavity 41, such as the water collecting cavity 51 selectively communicates with the spray opening of the spray assembly, and under the control of the controller, the water in the water collecting cavity 51 is delivered to the spray opening to be sprayed out to clean the dishes and other articles in the washing cavity 41. In order to supply water to the water collecting cavity 51, the water softener is connected to the water collecting cavity 51 in addition to the containing cavity 21. When the controller opens the water inlet valve, the fluid also flows through the water softener and flows into the water collecting cavity 51.

[0064] In some embodiments, the dishwasher 100 further comprises a three-way assembly, which can be a three-way pipe or a three-way joint, and has a first water port, a second water port and a third water port, wherein the first water port is connected to the water softener and used for water inlet, and the second water port and the third water port are respectively connected to the containing cavity 21 and the water collecting cavity 51 and used for water outlet. It can be understood that without using the three-way assembly, the water softener can be connected to the water cup 50 and the water tank 20 through two interfaces, and the three-way assembly used in the present embodiment can reduce the structural complexity of the water softener 60, avoid secondary design and reduce cost while facilitating pipe connection.

[0065] In combination Figure 1 , the dishwasher 100 further comprises a first communication pipe 80 and a second communication pipe 81. One end of the first communication pipe 80 is connected to the three-way assembly and communicates with the second water port, and the other end communicates with the containing cavity 21. One end of the second communication pipe 81 is connected to the three-way assembly and communicates with the third water port, and the other end communicates with the water collecting cavity 51. In the present embodiment, the inner diameter of the first communication pipe 80 is greater than that of the second communication pipe 81. In the case that the flow rate of the water supplied by the water softener is constant, the larger the inner diameter of the pipe, the more water flows per unit time. In the present embodiment, when the water softener supplies water to the washing device 40, the amount of water flowing into the water tank 20 per unit time through the first communication pipe 80 is greater than the amount of water flowing into the water cup 50 per unit time through the second communication pipe 81, which facilitates water storage in the water tank 20 and facilitates steam generation by the steam generator 30.

[0066] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it is understood that if 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, they 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 relationships 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.

[0067] The above is only a preferred embodiment of the present application, and is not used to 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 dishwasher comprises: a water tank having a containing cavity and a water outlet hole communicating with the containing cavity; a steam generator communicating with the water outlet hole; and a washing device having a washing cavity with a steam inlet hole communicating with the steam generator; in the height direction of the dishwasher, the water outlet hole and the steam inlet hole are both higher than the steam generator to jointly form a communicating vessel structure. Further comprising:

2. The dishwasher according to claim 1, characterized in that a one-way valve arranged between the water tank and the steam generator for allowing fluid to flow from the water outlet hole to the steam generator in one direction only. The water outlet hole communicates with the containing cavity at the bottom of the containing cavity, and in the height direction of the dishwasher, the steam inlet hole is located higher than the water outlet hole.

3. The warewashing machine of claim 1, wherein, Further comprising:

4. The warewashing machine of claim 1, wherein, a base for supporting the washing device, the washing device comprising an inner container for forming the washing cavity, the water tank being connected to the side wall of the inner container, and the steam generator being arranged on the base. Further comprising:

5. The warewashing machine of claim 1, wherein, a steam nozzle connected to the washing device, the washing device comprising an inner container for forming the washing cavity, the steam nozzle being mounted on the side wall of the inner container at the steam inlet hole, and the steam nozzle communicating the steam generator and the washing cavity for spraying steam into the washing cavity. The water tank is further provided with a gas permeable hole, the gas permeable hole communicating with the washing cavity and being arranged spaced apart from the water outlet hole in the height direction of the dishwasher.

6. The warewashing machine of claim 1, wherein, In the height direction of the dishwasher, the steam inlet hole is higher than the gas permeable hole.

7. The warewashing machine of claim 6, wherein, The washing device is provided with a water cup having a water collecting cavity, and the dishwasher further comprises:

8. The warewashing machine of claim 1, wherein, a water inlet valve; and a three-way assembly having a first water port, a second water port and a third water port, the first water port communicating with the water inlet valve, and the second water port and the third water port respectively communicating with the water tank and the water cup. Further comprising:

9. The warewash machine of claim 8, wherein, a first communication pipe having one end communicating with the second water port and the other end communicating with the containing cavity; and a second communication pipe having one end communicating with the third water port and the other end communicating with the water collecting cavity; wherein the inner diameter of the first communication pipe is greater than the inner diameter of the second communication pipe. Further comprising: a cleaning agent box arranged in the washing device for containing cleaning agent, the cleaning agent box communicating with the water tank; 10. The warewashing machine of claim 1, wherein, a cleaning valve arranged between the cleaning agent box and the water tank for controlling the on-off between the cleaning agent box and the containing cavity; and a controller configured to open the cleaning valve when the steam generator needs to be cleaned. ​ ​ ​

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