CN108523797B

CN108523797B - Dish washer and control method thereof

Info

Publication number: CN108523797B
Application number: CN201710118111.6A
Authority: CN
Inventors: 王金水
Original assignee: Sanhua Aweco Appliance Systems Wuhu Co Ltd
Current assignee: Sanhua Aweco Appliance Systems Wuhu Co Ltd
Priority date: 2017-03-01
Filing date: 2017-03-01
Publication date: 2021-09-24
Anticipated expiration: 2037-03-01
Also published as: CN108523797A

Abstract

The invention discloses a dish-washing machine and a control method thereof, belonging to the technical field of kitchen appliances, the dish-washing machine comprises: the bottom of the inner container is connected with a drainage pump; the air duct is provided with an air inlet and an air outlet, and the air inlet and the air outlet of the air duct are communicated with the liner and are used for matching the air duct and the liner to form a condensation loop; the condensation component comprises a cold water tank, and the cold water tank is arranged on the inner container and is matched with the air channel for condensing the air flow in the air channel; the heating assembly comprises a hot water tank, the hot water tank is arranged on the inner container and is matched with the air duct to heat air flow in the air duct, and the condensing assembly is positioned at the upstream of the heating assembly in the direction from the air inlet to the air outlet of the air duct; and the driving piece is used for driving the airflow in the air duct to flow from the air inlet to the air outlet. According to the dishwasher provided by the embodiment of the invention, under the dual effects of air drying and heat drying, the dishes in the dishwasher and the dishwasher per se are dried very quickly, the consumed energy is low, and the dishes are not potentially damaged.

Description

Dish washer and control method thereof

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to a dish-washing machine and a control method of the dish-washing machine.

Background

A dishwasher, also known as a dish washer or a dish washer, is a household appliance for replacing manual washing of dishes, cups, plates, spoons and the like. The working principle is that hot water with detergent dissolved is jetted to the kitchen ware to be cleaned at high speed, after washing, the water is drained, then clean water is used for cleaning, after cleaning, the tableware is dried by utilizing the self waste heat or the air heated by a heating element, so that some countries are also called as dish dryers.

The U.S. and Europe are the areas with the highest popularity of dish-washing machines, and the popularity of the dish-washing machines in the U.S. and Europe is close to 60% according to incomplete statistics. For users, in addition to brand, size, appearance and price of the dish washing machine, the most concerned are indexes such as washing effect, dryness of dishes and residual peculiar smell.

The dishwasher in the related art has the defects of insufficient drying, long time, excessive energy consumption, high cost and the like.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a dishwasher having high drying efficiency and low power consumption.

The invention also provides a control method of the dishwasher.

A dishwasher according to an embodiment of the present invention includes: an inner container; the air duct is provided with an air inlet and an air outlet, and the air inlet and the air outlet of the air duct are communicated with the inner container and are used for matching the air duct and the inner container to form a condensation loop; the condensation assembly comprises a cold water tank, and the cold water tank is arranged on the inner container and is matched with the air channel for condensing the air flow in the air channel; the heating assembly comprises a hot water tank, the hot water tank is arranged on the inner container and is matched with the air duct to heat airflow in the air duct, and the condensing assembly is positioned at the upstream of the heating assembly in the direction from the air inlet to the air outlet of the air duct; and the driving piece is used for driving the airflow in the air duct to flow from the air inlet to the air outlet.

According to the dishwasher provided by the embodiment of the invention, the characteristic that the amount of water vapor contained in the air at different temperatures is different (the saturated water content of the air at different temperatures) is utilized, so that the drying time of dishes and the dishwasher is shortened, and the drying rate is improved. Under the dual functions of wind drying and heat drying, the bowls and dishes in the dish washing machine and the dish washing machine are dried very quickly, the consumed energy is low, and the bowls and the dishes are not potentially damaged.

In addition, the dishwasher according to the above embodiment of the present invention may further have the following additional technical features:

in one embodiment of the invention, a drainage pump for draining water is connected to the bottom of the inner container, and the heating water tank is connected with the drainage pump.

Further, a first drain valve is connected in series between the hot water tank and the inner container.

In one embodiment of the invention, a second drain valve is connected in series between the cold water tank and the inner container.

Further, cooling fins are arranged on the cold water tank and the hot water tank, and the cooling fins are formed in the air duct.

Advantageously, the condensation assembly further comprises: the water collecting tank is located below the cold water tank and used for receiving condensed water.

Preferably, the driving piece is a micro centrifugal pump, the driving piece is higher than the water collecting tank, and the bottom end of the driving piece is connected with the water collecting tank.

In an embodiment of the invention, the air inlet of the air duct is communicated with the lower part of the left side of the inner container, the air outlet of the air duct is communicated with the upper part of the right side of the inner container, the condensing assembly is positioned on the left side outside the inner container, and the heating assembly is positioned on the right side outside the inner container.

The present invention also proposes a control method of a dishwasher according to the foregoing embodiment, the method including: the hot water in the washing procedure is stored in the heating assembly as a heat source; and entering a drying program after the washing program is finished for a preset time, wherein the drying program comprises the following steps: water stored in the condensation assembly is used as a cold source, and the driving piece is operated to enable the air flow to circulate along the inner container, the condensation assembly and the heating assembly.

In one embodiment of the present invention, at the beginning of a washing process, the water stored in the condensing assembly and the heating assembly is discharged into the inner container for washing.

Drawings

FIG. 1 is a schematic view of one direction of a dishwasher in accordance with one embodiment of the present invention.

FIG. 2 is a schematic view of another orientation of a dishwasher in accordance with an embodiment of the present invention.

Fig. 3 is a schematic view of a drying principle of a dishwasher according to an embodiment of the present invention.

Reference numerals:

the dishwasher 100 is provided with a dishwasher control system,

the water discharge pump 1 is provided with a water discharge pump,

the inner container (2) is provided with a liner,

a condensing module 31, a cold water tank 311, a heat sink 312, a second drain valve 313, a water collecting tank 314,

the heating unit 32, the hot water tank 321, the first drain valve 322,

a drive member 33.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

At present, there are three main ways of drying dishes in a dishwasher and the dishwasher itself in a related art dishwasher.

1: the washing of dishes is stopped after the dishes are washed with high-temperature water at about 75 ℃, the dishes evaporate surface moisture under the residual heat, and the method must use dish brightener.

2: the dishes and the dishwasher itself are dried using an additional heater and fan.

3: chemical substances and media are used to absorb moisture in the air. Due to cost issues, current 80% dishwashers use the first method to dry the dishes.

The drying methods all have some defects, wherein, the method 1 has long drying time, insufficient drying, residual water drops on the inner surface of the dish-washing machine, and large humidity in the dish-washing machine, and is easy to generate odor; the 2 nd method consumes excessive energy and damages special dishes; the 3 rd method requires special protection of chemicals and media against leakage, high cost and high energy consumption in the regeneration process.

To this end, the present invention provides a dishwasher 100 to solve some technical problems of the related art to some extent.

The dishwasher 100 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1 to 3, a dishwasher 100 according to an embodiment of the present invention includes: inner bag 2, wind channel and driving piece. The air duct is used to dry the inner space of the inner container 2.

Particularly, the wind channel has air intake and air outlet, the air intake and the air outlet in wind channel all communicate with the inner bag, be used for wind channel and the cooperation of inner bag 2 to form condensation loop, the air current becomes drying air after the condensation of condensation subassembly 31 in entering into the wind channel from inner bag 2, then get into the evaporation of water in the inner bag 2 after heating of heating subassembly 32, then the high temperature air that has the moisture carries dehumidifies for drying air through the condensation of condensation subassembly 31, realize the drying of bowl dish through the circulation. In other words, the condensing unit 31, the heating unit 32 and the inner container 2 are connected in series to form a condensing loop, and the condensing unit 31 is located upstream of the heating unit 32 in a direction from the air inlet to the air outlet of the air duct. The driving member 33 is used for driving the air flow to circulate in the air duct, so that the air flow in the air duct flows to the air outlet along the air inlet, and belongs to a power element of the condensation loop.

In the drying process, the driving part 33 drives the air flow to circularly flow along the liner 2 → the condensing component 31 → the heating component 32 → the liner 2, moisture in the liner 2 enters the condensing component 31 to be condensed, water vapor in the air flow is condensed on the condensing component 31, and the water content in the condensed air flow is less; the air flow condensed by the condensing assembly 31 is heated by the heating assembly 32, the temperature of the air flow after being heated by the heating assembly 32 is increased, the air flow heated by the heating assembly 32 enters the inner container 2, and the hot air enters the inner container 2 to take away the water vapor in the inner container 2, so that the tableware, the inner container 2 and the like are dried; the air flow carrying the moisture in the inner container 2 will circulate under the driving of the driving member 33. The drying of the liner 2, the tableware and the like can be realized after the air current circulates for a period of time.

According to the dishwasher 100 of the present invention, the drying time of the dishes and the dishwasher 100 is shortened to increase the drying rate by using the characteristic that the amount of water vapor that the air can contain is different at different temperatures (the saturated water content of the air at different temperatures). Under the dual actions of wind drying and heat drying, the dishes in the dishwasher 100 and the dishwasher 100 themselves are dried very quickly, consume little energy, and have no potential damage to the dishes.

In some embodiments of the present invention, as shown in fig. 1, the heating assembly 32 includes a hot water tank 321, and hot water is stored in the hot water tank 321, and the air flow is heated by the hot water when flowing through the heating assembly 32.

The hot water tank 321 is arranged on the inner container 2, and the hot water tank 321 is matched with the air duct to heat the air flow in the air duct, so that the air flow is heated before entering the inner container 2, and the air flow can evaporate the water in the inner container 2 conveniently.

Preferably, in order to improve the heating effect of the hot water tank 321 on the air flow, the hot water tank 321 may be disposed inside the air duct. Of course, the hot water tank 321 may be disposed to cover the outside of the air duct.

Further, as shown in fig. 1, a drain pump 1 is connected to a bottom of the inner container 2, and the drain pump 1 is used for draining water in the inner container 2. The hot water tank 321 is connected to the drain pump 1. Hot water is generated during the dish washing process of the dishwasher 100, and the hot water is discharged to the hot water tank 321 through the drain pump 1 and stored, and the hot water is applied to heat the air flow.

Advantageously, as shown in fig. 1, a first drain valve 322 is connected in series between the hot water tank 321 and the inner container 2. After the dishwasher 100 finishes washing dishes, the hot water stored in the hot water tank 321 remains, and when the dishwasher 100 washes next time, the first drain valve 322 may be opened to drain the hot water in the hot water tank 321 for the washing process of the dishwasher 100.

The hot water tank 321 for storing hot water may provide a high temperature heat source during use of the dishwasher 100, and may also store relatively clean waste water after rinsing for the next washing. The dishwasher 100 of the present invention can use the high temperature clean hot water in the rinsing stage as a heat source to heat the condensed dry air, and the dry air is blown into the dishwasher 100 under the driving of the centrifugal fan to accelerate the evaporation speed of water drops.

In addition, the heating assembly 32 of the present invention may further include an electric heating member, through which water may be heated, and when no hot water is generated or the amount of hot water is insufficient in the washing process, the water may be heated by the electric heating member. Of course, it is also possible to heat the gas flow directly by means of an electric heating element.

In some embodiments of the present invention, as shown in fig. 2, the condensing assembly 31 comprises: a cold water tank 311. The hot water tank is arranged on the inner container 2 and is matched with the air duct for condensing air flow into the hot water tank. When the air flow in the air duct flows through the cold water tank 311, the low temperature of the cold water tank 311 causes the water vapor to condense, thereby obtaining the air flow with low water content.

The cold water tank 311 and the hot water tank 321 are each provided with a heat radiating fin 312, so that the cold water tank 311 and the hot water tank 321 are radiated by the heat radiating fins, thereby better performing condensation and heating of air, and in addition, the heat radiating fins 312 are preferably formed in the air passage.

In the condensation component, the cooling fins 312 on the cold water tank 311 are used for condensing the air flow, and in addition, the cold water tank 311 can dissipate the cooling fins 312 on the cold water tank 311, so as to facilitate the rapid heat dissipation of the cooling fins 312 on the cold water tank 311, thereby improving the condensation effect of the cooling fins 312 on the cold water tank 311.

Specifically, the cooling fins 312 on the cold water tank 311 are formed as a part of the condensation circuit, that is, during circulation of the air flow in the condensation circuit, the air flow will flow through the cooling fins 312 on the cold water tank 311 for condensation.

Preferably, as shown in fig. 2, the cold water tank 311 of the present invention may be filled with tap water as a cold source.

Further preferably, as shown in fig. 2, the cold water tank 311 is connected to the inner container 2, and a second drain valve 313 is connected in series between the cold water tank 311 and the inner container 2. After the drying of the dishwasher 100 is completed, the water stored in the cold water tank 311 remains, and the second drain valve 313 may be opened to drain the hot water in the cold water tank 311 to the washing process of the dishwasher 100 when the dishwasher 100 is washed next time.

The cold water tank 311 for storing cold water may serve as a cold source, and may preheat water introduced into the cold water tank 311 from a pipe to raise the temperature of the cold water for the next washing. The cold water provided by the tap water supply system is used as a cold source, so that the high-temperature saturated moisture is cooled and excessive moisture is separated out, and the purposes of drying the dishes in the dish washer 100 and the inner wall of the dish washer 100 are achieved.

Further, as shown in fig. 2, the condensing assembly 31 further includes a water collecting tank 314, wherein the water collecting tank 314 is located below the cold water tank, and the water collecting tank 314 is used for receiving the condensed water. The condensed condensate water can be stored through the water collecting tank 314, the collection of the condensate water is convenient, and the problem that the condensate water is splashed to the bottom surface or the workbench is avoided.

Advantageously, as shown in fig. 2, the driving member 33 is a centrifugal micro-pump, during the operation of the centrifugal micro-pump, moisture in the air flow will be collected by the centrifugal micro-pump, so as to further dry the air flow, further reduce the humidity of the air flow entering the inner container, and accelerate the drying efficiency.

In addition, in order to facilitate the collection of the water remaining in the driving member 33, the driving member 33 is higher than the water collecting tank 314, and the bottom end of the driving member 33 is connected to the water collecting tank 314. When water is accumulated in the driving member 33, the water in the driving member 33 may be discharged into the water collecting tank 314, thereby facilitating the collection of the water during the drying process.

Referring to fig. 1 and 2, in some embodiments of the present invention, the condensing assembly 31 and the heating assembly 32 are respectively disposed at left and right sides of the outer side of the inner tub 2, so that the circulation of the air flow covers the inner tub 2, thereby improving the drying efficiency of the dishwasher 100.

Preferably, the air inlet of the air duct is communicated with the lower part of the left side of the inner container 2, the air outlet of the air duct is communicated with the upper part of the right side of the inner container 2, the condensing assembly 31 is positioned on the left side outside the inner container 2, and the heating assembly 32 is positioned on the right side outside the inner container 2. Of course, the left and right sides are opposite sides of the inner container 2, and are not to be construed as limiting the orientation.

Specifically, due to the nature of the hot air, the hot air heated by the heating unit 32 moves upward when entering the inner container 2, so that the condensing unit 31 is communicated with the lower space in the inner container 2, and the heating unit 32 is communicated with the upper space in the inner container 2. The heated hot air flows through the inner container from top to bottom, so that the hot air can cover the inner space of the whole inner container 2, and the moisture in the inner container 2 can be more conveniently pushed to the condensation component 31 under the action of air pressure, thereby achieving the purpose of improving the drying efficiency and effect.

The drying process of the dishwasher 100 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

After the dishwasher 100 completes the washing process, it is preferably stationary for a period of time (e.g., one minute) to wait for as much water droplets as possible inside the dishwasher 100 to naturally flow into the drain;

when the driving member 33 (for example, a centrifugal fan) starts to work, the inlet of the moisture condensing assembly 31 enters the drying device, and the air flow entering the drying device will sequentially flow through the condensing assembly 31, the driving member 33, the heating assembly 32, and then be discharged to the inner space of the inner container 2 from the hot air outlet of the heating assembly 32; meanwhile, cold water is injected into the cold water tank 311 of the condensation unit 31 (preferably, a water inlet valve is arranged at the inlet of the cold water tank 311); meanwhile, the drain pump 1 discharges the hot water into the hot water tank 321 (it is preferable to provide a water inlet valve at an inlet of the cold water tank 311).

The moisture is cooled by flowing through the fins 312 of the condensing assembly 31, the moisture condenses on the surfaces of the fins 312, and the condensed water flows along the pipes into the water collection tank 314 by gravity. The moisture flows through the driving member 33, the moisture and air are further separated by the driving member 33, and the separated water flows into the water collecting tank 314 along the pipe. The cooled air is heated by the heating assembly 32 after a part of moisture is separated out, and the heated air enters the interior of the dishwasher 100 again through the hot air outlet. The dishes inside the dishwasher 100 and the water drops on the inner surface of the dishwasher 100 are evaporated into water vapor under the action of the unsaturated hot air and the wind, and then the air flow enters the drying device again to begin to separate out water. After a period of time of circulation, the water inside the dishwasher 100 will be evaporated to dryness, thereby achieving the purpose of drying the dishes and the inside of the dishwasher 100.

In addition, the temperature of water introduced into the cold water tank 311 from the water supply line is increased and stored in the cold water tank 311. When the dishes are washed next time, the drain valve (second drain valve 313) of the condensing assembly 31 can be opened to drain the warm water into the dishwasher 100, so as to achieve the purposes of saving water and energy. The temperature of the water in the hot water tank 321 is reduced and stored in the hot water tank 321, and the drain valve (i.e. the first drain valve 322) of the heating assembly 32 can be opened to drain the water into the dishwasher 100 for saving water and energy when washing dishes next time.

The invention also provides a use method of the dishwasher 100, and the dishwasher 100 is the dishwasher 100 in the previous embodiment. The method comprises the following steps:

step 1, hot water in the washing process is stored in the heating assembly 32 as a heat source, wherein the hot water discharging and heating assembly 32 generated at each stage in the washing process can be used as the heat source, but it is preferable to use the hot water discharging and heating assembly 32 generated at the time of rinsing as the heat source for sanitary reasons, for example, hot water rinsing is used for the last rinsing in the dish washing process, hot water for the last rinsing can be discharged to the heating assembly 32 as the heat source, and another advantage of hot water rinsing used for the last rinsing is that water on the inner surface of the dishes or the inner container can be rapidly evaporated, thereby improving the drying effect. Of course, the provision of the last rinse water as the heat source is only a preferred example;

and 2, entering a drying program after the washing program is finished for a preset time, wherein the purpose of drying after the washing program is finished for the preset time is standing, and the standing can enable the water in the dishwasher 100 to be discharged through a water outlet as much as possible so as to improve the drying efficiency and effect.

Wherein, the drying procedure comprises: the water in the condensing assembly 31 is used as a cold source, and the driving member 33 is operated to circulate the air flow along the inner container, the condensing assembly 31 and the heating assembly 32. The water stored in the condensing unit 31 means that cold water is stored in the condensing unit 31, for example, tap water is filled into the condensing unit 31.

According to the control method of the dishwasher 100 of the embodiment of the present invention, the heating of the heating assembly 32 employs the hot water generated in the washing process, and additional heating or power consumption reduction of other heating programs are not required, so that energy is effectively saved, waste of hot water heat is avoided, and energy saving and environmental protection are provided.

In some embodiments of the present invention, a washing process is initiated by draining the water stored in the condensing assembly 31 and the heating assembly into the inner tub 2 for washing. By using water used in the drying process as washing, water consumption of the dishwasher 100 can be reduced, saving energy and protecting environment.

The dishwasher 100 of the present invention makes the condensing assembly 31 using low temperature water of a water supply system as a cooling source. The condensing assembly 31 has no mechanical movement, no noise, no emission and no pollution. Low cost and high reliability. The heating assembly 32 is made using hot water from the rinse stage of the dishwasher 100 as a heat source. The heating assembly 32 may heat the cooled air and direct it into the interior of the dishwasher 100 for heating the dishes. The drying speed is accelerated. The micro centrifugal pump provides air flow power for moisture from the cold end condensation assembly 31 to the hot end heating assembly 32, and meanwhile, air heated by the hot end can be blown to dishes in a supermarket, and evaporation of water drops on the surfaces of the dishes into moisture is accelerated. The drying speed of the dishes is high. Under the dual actions of wind drying and heat drying, the dishes in the dishwasher 100 and the dishwasher 100 themselves are dried very quickly, consume little energy, and have no potential damage to the dishes.

In addition, the driving member 33 in the present invention may be an axial flow fan. In addition, the drying system of the present invention may also be a refrigeration system of an air conditioner.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A dishwasher, comprising:

an inner container;

the air duct is provided with an air inlet and an air outlet, and the air inlet and the air outlet of the air duct are communicated with the inner container and are used for matching the air duct and the inner container to form a condensation loop;

the condensation assembly comprises a cold water tank, tap water is introduced into the cold water tank to serve as a cold source, and the cold water tank is arranged on the inner container and matched with the air channel to condense air flow in the air channel;

the heating assembly comprises a hot water tank, the hot water tank is arranged on the inner container and is matched with the air channel to heat airflow in the air channel, the condensing assembly is positioned at the upstream of the heating assembly in the direction from the air inlet to the air outlet of the air channel, the bottom of the inner container is connected with a drainage pump for draining water, and the hot water tank is connected with the drainage pump;

and the driving piece is used for driving the airflow in the air duct to flow from the air inlet to the air outlet.

2. The dishwasher of claim 1, wherein a first drain valve is connected in series between the hot water tank and the inner tub.

3. The dishwasher of claim 1, wherein a second drain valve is connected in series between the cold water tank and the inner tub.

4. The dishwasher of claim 1, wherein the cold water tank and the hot water tank are each provided with a heat sink, the heat sink being formed in the air duct.

5. The dishwasher of claim 1, the condensing assembly further comprising:

the water collecting tank is located below the cold water tank and used for receiving condensed water.

6. The dishwasher of claim 5, wherein the driving member is a micro centrifugal pump, the driving member is higher than the water collection tank, and a bottom end of the driving member is connected to the water collection tank.

7. The dishwasher according to any one of claims 1 to 6, wherein the air inlet of the air duct is communicated with the lower part of the left side of the inner container, the air outlet of the air duct is communicated with the upper part of the right side of the inner container, the condensing assembly is positioned on the left side outside the inner container, and the heating assembly is positioned on the right side outside the inner container.

8. A method of controlling a dishwasher according to any one of claims 1 to 7, the method comprising:

the hot water in the washing procedure is stored in the heating assembly as a heat source;

and entering a drying program after the washing program is finished for a preset time, wherein the drying program comprises the following steps:

water stored in the condensation assembly is used as a cold source, and the driving piece is operated to enable the air flow to circulate along the inner container, the condensation assembly and the heating assembly.

9. The control method of a dishwasher according to claim 8, wherein at the beginning of a washing program, the water stored in the condensing assembly and the heating assembly is discharged into the tub for washing.