A dishwasher and a control method thereof

Abstract

The application provides a dishwasher and a control method thereof. The dishwasher comprises a water storage device, a water inlet pipeline, an inner container with a washing chamber, and a spray arm arranged in the inner container. The water storage device comprises a shell with a first chamber and a second chamber, a water inlet, a first water outlet, and a second water outlet, the first chamber has an overflow port, the second chamber is connected with the overflow port of the first chamber, and a heat exchange device is arranged in the first chamber. The water inlet of the water storage device is connected with the water inlet pipeline, the first water outlet and the second water outlet of the water storage device are respectively connected with the washing chamber of the inner container, the water inlet end of the heat exchange device is connected with the inner container, and the water outlet end of the heat exchange device is connected with the spray arm. The heat exchange device of the water storage device is connected with a circulating pipeline between the inner container and the spray arm, and the existing circulating pump of the dishwasher can be used for realizing circulating heat exchange, so that the manufacturing cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dishwashers, in particular, to a dishwasher and a control method thereof. BACKGROUND

[0002] With the improvement of living standards, consumers have higher and higher requirements for the quality of life, and thus have higher and higher requirements for the quality, performance, humanization of use, and intelligence of operation of products, and a dishwasher, as an excellent product, has gradually entered people's lives.

[0003] In the working process of the dishwasher, water needs to be heated to meet the cleaning degree of the tableware, but the heated washing water is directly discharged after the washing is completed, the heat is not recycled, causing waste of energy, and the heating process of the washing water needs to be performed in the subsequent washing process, increasing the energy consumption. Therefore, some existing dishwashers propose a scheme of absorbing the heat in the heated water in the previous stage to heat the water for the subsequent washing process, so as to realize the recycling of energy and achieve the purpose of energy saving.

[0004] In order to realize the purpose of recycling and utilizing the heat of the washing water of the dishwasher, an existing dishwasher uses a water storage container on the side of the inner tank, and an electromagnetic valve is used to selectively inject water into the inner tank or the water storage container. In the first stage of washing, tap water passes through the softener, and a switching valve controls the water to directly enter the inner tank. When the required water inflow is reached, the switching valve controls the water to be injected into the water storage container. The water in the water storage container can absorb the heat emitted by the inner tank in the first heating and washing stage of the dishwasher. In the second stage of washing, tap water is directly injected into the inner tank through a valve to rinse the tableware. In the third stage of washing, because the rinsing water needs to be heated, the valve controls part or all of the water in the water storage container to be injected into the inner tank, which has been heated by the heat emitted by the inner tank of the dishwasher, so as to save the energy consumption of the dishwasher.

[0005] Although the above scheme solves the heat recycling of the dishwasher and achieves the purpose of energy saving, because the water inflow mode is different in each stage, the corresponding water inflow path and the corresponding control valve need to be designed for each washing stage. Therefore, the design of the water inflow path is complex, more control valves are used, the assembly is complex, and the cost is high.

[0006] Therefore, the present application is proposed. SUMMARY

[0007] In order to solve the above technical problems, the present application provides a dishwasher, in particular, adopts the following technical scheme:

[0008] A dishwasher comprises a water storage device, a water inlet pipeline, a tub having a washing chamber inside, and a spray arm arranged in the tub:

[0009] The water storage device comprises a housing having a first chamber and a second chamber inside, and having a water inlet opening, a first water outlet opening communicating with the first chamber, and a second water outlet opening communicating with the second chamber on the housing, the first chamber having an overflow opening, the second chamber communicating with the overflow opening of the first chamber, and a heat exchange device arranged in the first chamber;

[0010] The water inlet opening of the water storage device communicates with the water inlet pipeline, the first water outlet opening and the second water outlet opening of the water storage device respectively communicate with the washing chamber of the tub, and the water inlet end of the heat exchange device communicates with the tub, and the water outlet end of the heat exchange device communicates with the spray arm.

[0011] Further, a first water inlet control valve for controlling the opening and closing of the water inlet opening is arranged on the water inlet opening, and a first water outlet control valve for controlling the opening and closing of the first water outlet opening is arranged on the first water outlet opening.

[0012] Preferably, a second water inlet control valve for controlling the opening and closing of the water inlet end of the heat exchange device is arranged on the water inlet end of the heat exchange device, and a third water outlet control valve for controlling the opening and closing of the water outlet end of the heat exchange device is arranged on the water outlet end of the heat exchange device.

[0013] Further, a circulation pipeline communicating with the tub and the spray arm is arranged, a circulation pump is arranged on the circulation pipeline, the water inlet end of the heat exchange device communicates with the circulation pipeline section communicating with the tub, and the water outlet end of the heat exchange device communicates with the water inlet opening of the circulation pump.

[0014] Further, the heat exchange device comprises a heat exchange pipe, the water inlet end of the heat exchange pipe is arranged at the bottom of the housing, and the water outlet end of the heat exchange pipe is arranged at the top of the housing.

[0015] Preferably, the water inlet end of the heat exchange pipe is sealed and connected to a heat exchange water inlet pipe by a sealing connector, one end of the heat exchange water inlet pipe extends out of the housing, and / or the water outlet end of the heat exchange pipe is sealed and connected to a heat exchange water outlet pipe by a sealing connector, one end of the heat exchange water outlet pipe extends out of the housing.

[0016] The application also provides a control method of the dishwasher, specifically, the following technical scheme is adopted:

[0017] A control method of a dishwasher, the washing program of the dishwasher has multiple washing stages, and at least one washing stage having a heating process or after the heating process:

[0018] The water inlet is controlled to be opened, the first water outlet is controlled to be closed, the water in the water inlet pipeline is stored in the first chamber, the water inlet is controlled to be kept opened for a set time or the water in the first chamber reaches a set water level, the water inlet is controlled to be closed, the circulating pump is controlled to be in a working state or the circulating pump is controlled to be restarted, and the hot water in the inner container exchanges heat with the water stored in the first chamber through the heat exchange device.

[0019] Further, the washing program of the dishwasher has a first washing stage, and the first washing stage includes a heating process. When the washing water in the inner container is heated to a set temperature, the circulating pump is controlled to be opened to perform a circulating spray washing process.

[0020] When the remaining time of the circulating spray washing process reaches T0, the first water inlet control valve is controlled to be opened, the first water outlet control valve is controlled to be closed, the water in the water inlet pipeline is stored in the first chamber, the water inlet is controlled to be kept opened for a set time or the water in the first chamber reaches a set water level, the first water inlet control valve is controlled to be closed, the circulating pump is controlled to be in a working state, and the hot water in the inner container exchanges heat with the water stored in the first chamber through the heat exchange device.

[0021] Wherein, T0 is a set value.

[0022] Further, the washing program of the dishwasher has a first washing stage, and the first washing stage includes a heating process. When the washing water in the inner container is heated to a set temperature, the circulating pump is controlled to be opened to perform a circulating spray washing process.

[0023] When the circulating spray washing process ends, the first water inlet control valve is controlled to be opened, the first water outlet control valve is controlled to be closed, the water in the water inlet pipeline is stored in the first chamber, the water inlet is controlled to be kept opened for a set time or the water in the first chamber reaches a set water level, the first water inlet control valve is controlled to be closed, the circulating pump is controlled to be restarted, and the hot water in the inner container exchanges heat with the water stored in the first chamber through the heat exchange device.

[0024] Further, in a subsequent washing stage of the first washing stage, when the heating process is performed, the first water outlet control valve is controlled to be opened, the first water inlet control valve is controlled to be closed, the heated water stored in the first chamber is discharged into the inner container through the first water outlet, if the water in the inner container reaches a set water level, the first water outlet control valve is controlled to be closed to start the washing process, and if the water stored in the first chamber is completely discharged and the water in the inner container does not reach the set water level, the first water inlet control valve is controlled to be opened to supplement water to the set water level before starting the washing process.

[0025] Further, the dishwasher performs a second washing stage, controls the first water inlet control valve to open, the first water outlet control valve to close, and the water in the water inlet pipeline to overflow into the second chamber and then to be discharged into the inner container through the second water outlet, and when the inner container is filled with water to a set water level, controls the first water inlet control valve to close and starts a second washing process.

[0026] The dishwasher performs a third washing stage, controls the first water outlet control valve to open and the first water inlet control valve to close, and the heated water stored in the first chamber is discharged into the inner container through the first water outlet, and if the inner container is filled with water to a set water level, controls the first water outlet control valve to close and starts a third washing process, and if the water stored in the first chamber is completely discharged and the inner container is not filled with water to the set water level, controls the first water inlet control valve to open to supplement water until the inner container is filled with water to the set water level and then starts the third washing process.

[0027] Further, the dishwasher performs a first washing stage, controls the first water inlet control valve and the first water outlet control valve to open, and the water in the water inlet pipeline is discharged into the inner container through the first water outlet, and when the inner container is filled with water to a set water level, controls the first water inlet control valve and the first water outlet control valve to close and starts a first washing process.

[0028] The dishwasher of the present application can store water in the first chamber by using the water storage device, absorb the heat emitted by the inner container during the heating washing process to be heated, and be used for subsequent heating washing process water, thereby realizing heat recycling, reducing the energy consumption of the dishwasher, reducing the power consumption of the dishwasher, and reducing the use cost of the user.

[0029] The dishwasher of the present application can directly supply water to the inner container by using the water storage device, can store heat recovery water, and can control the heat recovery water to be discharged to the inner container or still discharge cold water to the inner container according to the requirements of the washing process, the water storage device cooperates with a one-in-two-out waterway, greatly simplifies the connection of the waterway, and only needs to be provided with a control valve on the first water outlet, without a control valve on the water inlet, thereby reducing the use of control valves, simplifying assembly, and reducing the manufacturing cost of the dishwasher.

[0030] The water storage device of the present application further recovers the heat in the washing water by the heat exchange device arranged in the first chamber, thereby greatly improving the heat recovery efficiency.

[0031] The water inlet end of the heat exchange device of the water storage device of the present application is communicated with the inner container, and the water outlet end of the heat exchange device is communicated with the spraying arm, so that the heat exchange device is connected into the circulating pipeline between the inner container and the spraying arm, and the circulating pump of the dishwasher can be used to realize the circulating heat exchange of the washing water between the inner container and the water storage device, thereby reducing the need for a separately arranged circulating pump and reducing the manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1An internal structure view of the water storage device of the embodiment of the present application;

[0033] Figure 2 A sectional view of the water storage device of the embodiment of the present application;

[0034] Figure 3 A local enlarged view at A of the water storage device of the embodiment of the present application;

[0035] Figure 4 A local enlarged exploded view at A of the water storage device of the embodiment of the present application.

[0036] Explanation of reference numerals in the drawings: 1 - housing 2 - water inlet 3 - first water outlet 4 - second water outlet 5 - recessed structure 6 - air pressure balance port 7 - vertical water baffle 8 - fourth plate segment 9 - third plate segment 10 - first partition plate 11 - first plate segment 12 - second plate segment 13 - second partition plate 14 - first chamber 15 - second chamber 16 - heat exchange water inlet pipe 17 - heat exchange water outlet pipe 18 - sealing ring 19 - elastic tubular body 20 - heat exchange pipe 21 - limiting bayonet 22 - annular groove 23 - limiting protrusion 24 - heat exchange device 25 - spray arm. DETAILED DESCRIPTION

[0037] A dishwasher and a control method thereof of the present application will be described in detail below with reference to the accompanying drawings:

[0038] As shown in the drawings, Figures 1-4 the present embodiment provides a dishwasher comprising a water storage device, a water inlet pipeline, an inner container having a washing chamber inside, and a spray arm arranged in the inner container:

[0039] The water storage device comprises a housing 1, the housing 1 has a first chamber 14 and a second chamber 15 inside, the housing 1 has a water inlet 2 communicating with the first chamber 14, a first water outlet 3, and a second water outlet 4 communicating with the second chamber 15, the first chamber 14 has an overflow port, the second chamber 15 communicates with the overflow port of the first chamber, and the first chamber 14 is provided with a heat exchange device 24;

[0040] The water inlet 2 of the water storage device communicates with the water inlet pipeline, the first water outlet 3 and the second water outlet 4 of the water storage device respectively communicate with the washing chamber of the inner container, the water inlet end of the heat exchange device 24 communicates with the inner container, and the water outlet end of the heat exchange device 24 communicates with the spray arm 25.

[0041] The dishwasher of the present embodiment can store water in the first chamber by using the water storage device, absorb the heat emitted by the inner container during the heating washing process to be heated, and be used for subsequent heating washing process water, thereby realizing the recycling of heat, reducing the energy consumption of the dishwasher, reducing the power consumption of the dishwasher, and reducing the use cost of the user.

[0042] The dishwasher of the embodiment can realize direct water feeding into the inner container by adopting the water storage device, can store heat recovery water, and can discharge heat recovery water to the inner container or still discharge cold water to the inner container according to the requirement of the washing process. The water storage device is matched with a water inlet and outlet water path, greatly simplifies the connection of the water path, and only needs to set a control valve on the first water outlet, without needing a control valve on the water inlet, reduces the use of the control valve, simplifies the assembly, and reduces the manufacturing cost of the dishwasher.

[0043] The water storage device of the embodiment further recovers the heat in the washing water by the heat exchange device arranged in the first chamber, greatly improves the heat recovery efficiency.

[0044] The water inlet end of the heat exchange device of the water storage device of the embodiment is communicated with the inner container, and the water outlet end of the heat exchange device is communicated with the spray arm. In this way, the heat exchange device is connected into the circulating pipeline between the inner container and the spray arm, and the circulating heat exchange between the inner container and the water storage device can be realized by using the existing circulating pump of the dishwasher, which reduces the need for separately arranging a circulating pump and reduces the manufacturing cost.

[0045] Further, the water inlet is provided with a first water inlet control valve for controlling the opening and closing thereof, and the first water outlet is provided with a first water outlet control valve for controlling the opening and closing thereof.

[0046] Preferably, the water inlet end of the heat exchange device is provided with a second water inlet control valve for controlling the opening and closing thereof, and the water outlet end of the heat exchange device is provided with a third water outlet control valve for controlling the opening and closing thereof. In this way, the user can select whether to start the water circulation heat recovery function.

[0047] It should be noted that the first water inlet control valve of the embodiment controls the disconnection / connection of the water inlet pipeline and the household water pipe. In addition, the second water outlet of the embodiment can also be provided with a second water outlet control valve for controlling the opening and closing thereof.

[0048] Specifically, the dishwasher of the embodiment comprises a circulating pipeline communicated with the inner container and the spray arm, a circulating pump is arranged on the circulating pipeline, the water inlet end of the heat exchange device is communicated with the circulating pipeline section communicated with the inner container, and the water outlet end of the heat exchange device is communicated with the water inlet of the circulating pump.

[0049] Further, the shell has a flat structure, and the flat side wall surface of the shell is in contact with the outer wall of the inner container. In this way, the contact area between the shell and the inner container can be increased, and the heat emitted by the inner container can be better absorbed.

[0050] The water storage device of the embodiment has a first chamber 14 and a second chamber 15 communicated with each other inside the water storage device:

[0051] When water needs to be directly introduced into the inner container of the dishwasher, the first water outlet 3 is opened, and the water in the water inlet pipeline enters the first chamber 14 through the water inlet 2 and is directly discharged into the inner container of the dishwasher through the first water outlet 3 of the first chamber 14.

[0052] When water needs to be stored to absorb heat in the washing process, the first water outlet 3 and the second water outlet 4 are both closed, and the water in the water inlet pipeline enters the first chamber 14 through the water inlet 2 and is stored.

[0053] After the heating washing process is completed, since the washing water still has a relatively high temperature, the washing water can be driven by the circulating pump to enter the heat exchange device 24 and exchange heat with the water stored in the first chamber, and then be discharged after heat exchange, and the temperature of the washing water is reduced and discharged from the dishwasher. The water storage device of the embodiment further recovers the heat in the washing water through the heat exchange device 24, greatly improving the heat recovery efficiency.

[0054] When the water stored in the first chamber 14 is heated by the heat recovered, when the stored water needs to be discharged into the inner container, the first water outlet 3 is opened, and when cold water needs to be introduced into the inner container, the first water outlet 3 remains closed and the second water outlet 4 is opened, and the water in the water inlet pipeline enters the first chamber 14 through the water inlet 2 and overflows into the second chamber 15 through the overflow port, and is discharged into the inner container through the second water outlet 4 of the second chamber.

[0055] As can be seen from the above, the water storage device of the embodiment has the following beneficial effects:

[0056] (1) The water storage device of the embodiment can directly introduce water into the inner container, can store heat recovery water, and can control the discharge of heat recovery water to the inner container or still discharge cold water to the inner container according to the requirements of the washing process. The water storage device can meet various water requirements of the dishwasher. In addition, the water storage device cooperates with a one-in-two-out water path, greatly simplifying the connection of the water path, and only a control valve is needed on the first water outlet 3, and the water inlet 2 does not need a control valve, reducing the use of control valves, simplifying assembly, and reducing manufacturing costs.

[0057] (2) The water storage device of the embodiment can store water in the first chamber 14, absorb heat emitted by the inner container in the heating washing process, and be heated for subsequent heating washing process water, realizing heat recovery and utilization, reducing the energy consumption of the dishwasher, reducing the power consumption of the dishwasher, and reducing the use cost of the user.

[0058] (3) The water storage device of the embodiment further recovers the heat in the washing water through the heat exchange device 24, greatly improving the heat recovery efficiency.

[0059] Further, the heat exchange device 24 of the present embodiment comprises heat exchange pipes 20, the water inlet end of the heat exchange pipes 20 is arranged at the bottom of the housing 1, and the water outlet end of the heat exchange pipes 20 is arranged at the top of the housing 1. The washing water of the dishwasher of the present embodiment enters from the bottom of the housing 1 and is discharged from the top, and the washing water flows in the reverse direction, so that the heat exchange is more sufficient.

[0060] In order to further increase the heat exchange, the heat exchange pipes of the present embodiment are arranged in a spiral and bent shape inside the first chamber 14.

[0061] In order to realize the arrangement of the washing water into the heat exchange pipes arranged inside the first chamber 14, the water inlet end of the heat exchange pipes 20 of the present embodiment is sealed and connected to the heat exchange water inlet pipe 16 through a sealing connector, one end of the heat exchange water inlet pipe 16 is arranged to extend out of the housing 1.

[0062] In order to realize the arrangement of the washing water into the heat exchange pipes arranged inside the first chamber 14, the water inlet end of the heat exchange pipes 20 of the present embodiment is sealed and connected to the heat exchange water inlet pipe 16 through a sealing connector, one end of the heat exchange water inlet pipe 16 is arranged to extend out of the housing 1.

[0063] As shown in Figs. Figure 3 and Figure 4 Specifically, the sealing connector of the present embodiment comprises an elastic tubular body 19 and a sealing ring 18, the elastic tubular body 19 has a first connecting end sleeved on the water inlet end / outlet end of the heat exchange pipes 20 and a second connecting end inserted into the heat exchange water inlet pipe 16 / heat exchange water outlet pipe 17; the inner diameter of the pipe opening of the first connecting end is smaller than the outer diameter of the pipe opening of the water inlet end / outlet end of the heat exchange pipes 20, and the first connecting end is sleeved on the water inlet end / outlet end of the heat exchange pipes in an interference sealing connection, and the sealing ring 18 is arranged between the second connecting end and the heat exchange water inlet pipe 16 / heat exchange water outlet pipe 17 to realize the sealing connection.

[0064] In order to realize the installation of the sealing ring 18, the outer peripheral wall of the second connecting end of the present embodiment has at least one annular groove 22, and the sealing ring 18 is arranged in the annular groove 22 and in sealing contact with the inner wall of the heat exchange water inlet pipe 16 / heat exchange water outlet pipe 17.

[0065] Further, the second connecting end of the embodiment is provided with an elastic limiting protrusion 23 on the outer peripheral wall close to the first connecting end, and a limiting buckle 21 is formed on the pipe wall of the heat exchange water inlet pipe 16 / heat exchange water outlet pipe 17; the annular groove 22 of the second connecting end is partially inserted into the interior of the heat exchange water inlet pipe 16 / heat exchange water outlet pipe 17 and is sealed and connected through the sealing ring 18, and the elastic limiting protrusion 23 is elastically compressed into the limiting buckle 21 for limiting clamping. In the embodiment, the elastic limiting protrusion 23 is elastically compressed into the limiting buckle 21 for limiting clamping, which prevents the sealing connecting piece from falling off the heat exchange water inlet pipe 16 / heat exchange water outlet pipe 17 and causing water leakage.

[0066] In order to separate the first chamber 14 and the second chamber 15 from each other in the shell 1, the shell of the embodiment has a hollow chamber in the interior, and a first partition plate 10 is arranged in the hollow chamber; the lower end of the first partition plate 10 is connected to the bottom wall of the hollow chamber, and the upper end is arranged in a spaced manner with the top wall of the hollow chamber, so as to separate the hollow chamber into the first chamber 14 and the second chamber 15 which are in communication with each other; the first water outlet 3 is arranged at the bottom of the first chamber 14, and the second water outlet 4 is arranged at the bottom of the second chamber 15.

[0067] In the embodiment, the first partition plate 10 separates the first chamber 14 and the second chamber 15 which are in communication with each other, and the upper open port of the first chamber 14 is the overflow port. When the first chamber 14 is filled with water, water continues to flow into the first chamber 14 and then overflows into the second chamber 15 through the upper open port. The first partition plate 10 of the embodiment can be integrally formed with the shell, and the overall structure of the water storage device is simple, easy to manufacture and extremely low in cost.

[0068] Further, the water inlet 2 of the embodiment is arranged at the bottom of the hollow chamber, and the hollow chamber has a water inlet channel which is in communication with the water inlet 2 and the first chamber 14. The water inlet channel is used to guide the water inlet of the bottom water inlet 2 to the upper open port of the first chamber 14 and then into the interior of the first chamber 14.

[0069] As an embodiment of the embodiment, the hollow chamber of the embodiment is provided with a second partition plate 13 which is located between the first partition plate 10 and the inner wall of the hollow chamber; the first partition plate 10 and the inner wall of the hollow chamber jointly enclose the first chamber 14, the first partition plate 10, the second partition plate 13 and the inner wall of the hollow chamber jointly enclose the second chamber 15, and the second partition plate 13 and the inner wall of the hollow chamber jointly enclose the water inlet channel which extends from the bottom water inlet 2 to the upper open port of the first chamber 14.

[0070] Specifically, the shell 1 comprises a bottom wall, a top wall, and a side wall connected to the bottom wall and the top wall respectively and surrounding a circumference, the bottom wall, the top wall, and the side wall jointly form the hollow chamber; the second partition plate 13 comprises a first plate segment 11 extending along the direction of the side wall and a second plate segment 12 extending along the direction of the top wall, the first plate segment 11 and the side wall jointly form a first water inlet channel guiding water entering through the bottom water inlet to the top, and the second plate segment 12 and the top wall and the side wall jointly form a second water inlet channel guiding water horizontally to the upper opening of the first chamber.

[0071] The first partition plate 10 comprises a third plate segment 9 extending along the direction of the side wall and a fourth plate segment 8 extending along the direction of the top wall, the third plate segment 9 divides the hollow chamber into a first chamber 14 and a second chamber 15 which are both closed at the bottom and open at the top, the fourth plate segment 8 extends towards the upper opening of the first chamber 14, the end of the fourth plate segment 8 is beyond the end of the second plate segment 12, and a vertical water baffle 7 is arranged at the joint of the third plate segment 9 and the fourth plate segment 8.

[0072] The end of the fourth plate segment 8 is beyond the end of the second plate segment 12, so that when water is stored in the first chamber 14 and cold water needs to be introduced into the inner container through the second chamber 15, the water entering through the water inlet 2 is guided to the upper opening of the first chamber 14 through the water inlet channel, and is blocked by the longer fourth plate segment 8 from entering the second chamber 15, so as to avoid the cold water directly entering the first chamber 14 to exchange heat with the stored water heated by the recovered heat, thereby reducing the temperature of the stored water and affecting the efficiency of heat recovery.

[0073] Meanwhile, the vertical water baffle 7 is arranged at the joint of the third plate segment 9 and the fourth plate segment 8, so as to block the water entering the first chamber 14 from directly entering the second chamber 15.

[0074] Further, preferably, the fourth plate segment 8 is arranged in an inclined downward manner from the end connected to the third plate segment 9 to the end extending into the upper opening of the first chamber, so as to better guide the water entering the first chamber 14.

[0075] In order to keep the air pressure in the water storage device balanced with the outside, the shell 1 is provided with an air pressure balance port 6 communicating the first chamber 14, the second chamber 15, and the outside environment, and the position of the air pressure balance port 6 is higher than the highest water level of the second chamber 15.

[0076] Preferably, the air pressure balance port 6 of the present embodiment is arranged inside the second chamber 15.

[0077] Further, the outer wall of the shell 1 has a recess structure 5 corresponding to the position of the air pressure balance port. One end of the recess structure 5 is flush with the outer side wall of the shell to ensure that the water storage device can be fully connected with the outside even if it is tightly attached to the dishwasher.

[0078] The embodiment also provides a control method of the dishwasher. The washing program of the dishwasher has multiple washing stages. In or after at least one washing stage with a heating process:

[0079] The dishwasher controls the water inlet to be open, the first water outlet to be closed, and the water in the water inlet pipeline to be stored in the first chamber. The water inlet is controlled to be open for a set time or to be closed when the water in the first chamber reaches a set water level. The dishwasher controls the circulating pump to be in a working state or controls the circulating pump to be restarted. The hot water in the inner container exchanges heat with the water stored in the first chamber through the heat exchange device.

[0080] Further, the washing program of the dishwasher has a first washing stage. The first washing stage includes a heating process. When the washing water in the inner container is heated to a set temperature, the circulating pump is controlled to be open to perform a circulating spray washing process.

[0081] When the remaining time of the circulating spray washing process reaches T0, the dishwasher controls the first water inlet control valve to be open, the first water outlet control valve to be closed, and the water in the water inlet pipeline to be stored in the first chamber. The water inlet is controlled to be open for a set time or to be closed when the water in the first chamber reaches a set water level. The dishwasher controls the circulating pump to be in a working state. The hot water in the inner container exchanges heat with the water stored in the first chamber through the heat exchange device.

[0082] T0 is a set value.

[0083] Further, the washing program of the dishwasher has a first washing stage. The first washing stage includes a heating process. When the washing water in the inner container is heated to a set temperature, the circulating pump is controlled to be open to perform a circulating spray washing process.

[0084] When the circulating spray washing process ends, the dishwasher controls the first water inlet control valve to be open, the first water outlet control valve to be closed, and the water in the water inlet pipeline to be stored in the first chamber. The water inlet is controlled to be open for a set time or to be closed when the water in the first chamber reaches a set water level. The dishwasher controls the circulating pump to be restarted. The hot water in the inner container exchanges heat with the water stored in the first chamber through the heat exchange device.

[0085] Further, in the subsequent washing stage of the first washing stage, when the heating process is performed, the first water outlet control valve is opened, the first water inlet control valve is closed, the heated water stored in the first chamber is discharged into the inner tub through the first water outlet, if the inner tub is filled to the set water level, the first water outlet control valve is closed, and the washing process is started, if the water stored in the first chamber is completely discharged and the inner tub is not filled to the set water level, the first water inlet control valve is opened to supplement water to the set water level, and then the washing process is started.

[0086] Further, the dishwasher performs the second washing stage, the first water inlet control valve is controlled, and the first water outlet control valve is closed, the water in the water inlet pipeline flows into the second chamber and is discharged into the inner tub through the second water outlet, when the inner tub is filled to the set water level, the first water inlet control valve is closed, and the second washing process is started.

[0087] The dishwasher performs the third washing stage, the first water outlet control valve is opened, and the first water inlet control valve is closed, the heated water stored in the first chamber is discharged into the inner tub through the first water outlet, if the inner tub is filled to the set water level, the first water outlet control valve is closed, and the third washing process is started, if the water stored in the first chamber is completely discharged and the inner tub is not filled to the set water level, the first water inlet control valve is opened to supplement water to the set water level, and then the third washing process is started.

[0088] Further, the dishwasher performs the first washing stage, the first water inlet control valve and the first water outlet control valve are opened, the water in the water inlet pipeline flows into the first chamber and is directly discharged into the inner tub through the first water outlet, when the inner tub is filled to the set water level, the first water inlet control valve and the first water outlet control valve are closed, and the first washing process is started.

[0089] The above only describes the preferred embodiments of the present application, and does not limit the present application in any form, although the present application has been disclosed as above, however, it is not intended to limit the present application, any person skilled in the art of the patent can make some changes or modifications to the above-mentioned technical content as equivalent embodiments without departing from the technical solution of the present application, as long as it does not depart from the technical solution of the present application, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application, all still belong to the scope of the present application.

Claims

1. A dishwasher, characterized in that The water storage device, the water inlet pipeline, the inner container with the washing chamber and the spray arm arranged in the inner container are provided. The water storage device comprises a shell with a first chamber and a second chamber, a water inlet on the shell communicating with the first chamber, a first water outlet on the shell, and a second water outlet on the shell communicating with the second chamber, the first chamber has an overflow port, the second chamber communicates with the overflow port of the first chamber, and a heat exchange device is arranged in the first chamber. The water inlet of the water storage device communicates with the water inlet pipeline, the first water outlet and the second water outlet of the water storage device respectively communicate with the washing chamber of the inner container, the water inlet end of the heat exchange device communicates with the inner container, and the water outlet end of the heat exchange device communicates with the spray arm. The shell has a hollow chamber, and a first partition plate is arranged in the hollow chamber; the lower end of the first partition plate is connected to the bottom wall of the hollow chamber, and the upper end of the first partition plate is arranged in a spaced manner with the top wall of the hollow chamber, so as to divide the hollow chamber into the first chamber and the second chamber which are in communication with each other. The second partition plate is arranged in the hollow chamber and located between the first partition plate and the inner wall of the hollow chamber; the first partition plate and the inner wall of the hollow chamber jointly form the first chamber, and the first partition plate, the second partition plate and the inner wall of the hollow chamber jointly form the second chamber. The first water outlet is arranged at the bottom of the first chamber, the second water outlet is arranged at the bottom of the second chamber, the water inlet is arranged at the bottom of the hollow chamber, and the hollow chamber has a water inlet channel which communicates the water inlet with the first chamber. The second partition plate and the inner wall of the hollow chamber jointly form the water inlet channel which extends from the bottom water inlet to the upper end opening of the first chamber.

2. The dishwasher according to claim 1, characterized in that A first water inlet control valve is arranged on the water inlet to control the opening and closing of the water inlet, and a first water outlet control valve is arranged on the first water outlet to control the opening and closing of the first water outlet.

3. The warewash machine of claim 2, wherein, A second water inlet control valve is arranged on the water inlet end of the heat exchange device to control the opening and closing of the water inlet end, and a third water outlet control valve is arranged on the water outlet end of the heat exchange device to control the opening and closing of the water outlet end.

4. The dishwasher according to claim 1 or 2, characterized in that A circulating pipeline which communicates the inner container with the spray arm is arranged, a circulating pump is arranged on the circulating pipeline, the water inlet end of the heat exchange device communicates with the circulating pipeline section which communicates with the inner container, and the water outlet end of the heat exchange device communicates with the water inlet of the circulating pump.

5. The warewashing machine of claim 1, wherein, The heat exchange device comprises a heat exchange pipe, the water inlet end of the heat exchange pipe is arranged at the bottom of the shell, and the water outlet end of the heat exchange pipe is arranged at the top of the shell.

6. The warewash machine of claim 5, wherein, The water inlet end of the heat exchange pipe is sealed and connected with a heat exchange water inlet pipe through a sealing connector, one end of the heat exchange water inlet pipe extends out of the shell, and / or the water outlet end of the heat exchange pipe is sealed and connected with a heat exchange water outlet pipe through a sealing connector, one end of the heat exchange water outlet pipe extends out of the shell.

7. A control method of the dishwasher according to any one of claims 1 to 6, characterized in that, The washing program of the dishwasher has multiple washing stages, and at least one of the washing stages has a heating process or after the heating process: The dishwasher controls the water inlet to be opened, the first water outlet to be closed, and the water in the water inlet pipeline to be stored in the first chamber, controls the water inlet to be kept open for a set time or controls the water inlet to be closed when the water in the first chamber reaches a set water level, controls the circulating pump to be in a working state or controls the circulating pump to be restarted, and the hot water in the inner container exchanges heat with the water stored in the first chamber through the heat exchange device.

8. The control method of the dishwasher according to claim 7, characterized in that, The washing program of the dishwasher has a first washing stage, the first washing stage includes a heating process, when the washing water in the inner tub is heated to a set temperature, the circulating pump is controlled to be started to perform a circulating spray washing process; When the remaining time of the circulating spray washing process reaches T0, the dishwasher controls the water inlet control valve to be opened, the first water outlet control valve is closed, the water in the water inlet pipeline is stored in the first chamber, and the water inlet is controlled to be kept open for a set time or when the water in the first chamber reaches a set water level, the first water inlet control valve is controlled to be closed, the dishwasher controls the circulating pump to be in a working state, and the hot water in the inner tub exchanges heat with the water stored in the first chamber through the heat exchange device; Wherein, T0 is a set value.

9. The control method of the dishwasher according to claim 7, characterized in that, The washing program of the dishwasher has a first washing stage, the first washing stage includes a heating process, when the washing water in the inner tub is heated to a set temperature, the circulating pump is controlled to be started to perform a circulating spray washing process; When the circulating spray washing process ends, the dishwasher controls the water inlet control valve to be opened, the first water outlet control valve is closed, the water in the water inlet pipeline is stored in the first chamber, and the water inlet is controlled to be kept open for a set time or when the water in the first chamber reaches a set water level, the first water inlet control valve is controlled to be closed, the dishwasher controls the circulating pump to be restarted, and the hot water in the inner tub exchanges heat with the water stored in the first chamber through the heat exchange device.

10. The control method of the dishwasher according to claim 8 or 9, characterized in that, In the subsequent washing stage of the first washing stage, when the heating process is performed, the first water outlet control valve is controlled to be opened, the first water inlet control valve is closed, the heated water stored in the first chamber is discharged into the inner tub through the first water outlet, if the inner tub is filled to a set water level, the first water outlet control valve is controlled to be closed, and the washing process is started, if the water stored in the first chamber is completely discharged and the inner tub is not filled to the set water level, the first water inlet control valve and the first water outlet control valve are controlled to be opened, water is supplemented to the set water level, and then the washing process is started.

11. The control method of the dishwasher according to claim 10, characterized in that, The dishwasher performs a second washing stage, the first water inlet control valve is controlled to be opened, the first water outlet control valve is closed, the water in the water inlet pipeline flows into the second chamber and is discharged into the inner tub through the second water outlet, and when the inner tub is filled to a set water level, the first water inlet control valve is controlled to be closed, and the second washing process is started; The dishwasher performs a third washing stage, the first water outlet control valve is controlled to be opened, the first water inlet control valve is closed, the heated water stored in the first chamber is discharged into the inner tub through the first water outlet, if the inner tub is filled to a set water level, the first water outlet control valve is controlled to be closed, and the third washing process is started, if the water stored in the first chamber is completely discharged and the inner tub is not filled to the set water level, the first water inlet control valve is controlled to be opened, water is supplemented to the set water level, and then the third washing process is started.

12. The control method of the dishwasher according to claim 8 or 9, characterized in that, The dishwasher performs a first washing stage, the first water inlet control valve and the first water outlet control valve are controlled to be opened, the water in the water inlet pipeline is discharged through the first water outlet and directly into the inner tub, when the inner tub is filled to a set water level, the first water inlet control valve and the first water outlet control valve are controlled to be closed, and the first washing process is started.

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