Washing equipment and control method thereof

Abstract

The invention discloses a washing device and a control method thereof. The washing device comprises an outer cylinder, an inner cylinder and an inner cylinder, the inner barrel is rotatably arranged in the outer barrel and can independently contain water in the washing process; the water storage tank is arranged below the outer cylinder and is independent of the outer cylinder to store water; a water pump is arranged on the circulating pipe; the inlet end of the water inlet pipe is communicated with the circulating pipe, and the outlet end is communicated with the inner cylinder; the control valve is used for switching the water pump to execute a first working state or a second working state during operation; the water pump executes a first working state to drive water in the water storage tank to enter the circulating pipe and then return to the water storage tank along the circulating pipe to form circulation; the water pump executes a second working state to drive water in the water storage tank to enter the water inlet pipe along the circulating pipe and be injected into the inner cylinder along the water inlet pipe. According to the washing machine, through cooperation with the control valve, the water pump can be used for circulating water in the water storage tank and can also be used for injecting water into the inner barrel from the water storage tank, and the purpose of efficiently and uniformly heating or injecting water into the inner barrel after a detergent is fully dissolved can be achieved.

Description

TECHNICAL FIELD

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

[0002] The existing washing equipment generally comprises a fixedly arranged outer cylinder and a rotatable inner cylinder, and a plurality of dewatering holes are arranged on the cylinder wall of the inner cylinder to communicate the outer cylinder with the inner cylinder. However, during the washing process, the washing water between the inner cylinder and the outer cylinder cannot be utilized, resulting in the waste of the washing water. Meanwhile, the dirt generated during the washing process can be partially left between the inner cylinder and the outer cylinder, which is difficult to clean and can cause pollution to the washing water and affect the washing effect after long-term accumulation.

[0003] To solve the above problems, the prior art proposes a washing machine without dewatering holes arranged on the inner cylinder, so that a sealed space is formed in the inner cylinder during the washing process, the inner cylinder can independently hold washing water, thereby avoiding the storage of water between the inner cylinder and the outer cylinder during the washing process, saving the amount of washing water, and greatly avoiding the accumulation of dirt between the inner cylinder and the outer cylinder. However, due to the closed space in the inner cylinder during the washing process, the method of filling water into the inner cylinder by filling water into the outer cylinder in the traditional washing machine is no longer applicable. Meanwhile, it is also impossible to detect the actual water level by arranging a water level sensor on the outer cylinder.

[0004] Based on the above problems, the prior art further proposes a washing equipment with a water measuring device, the water inlet pipeline of which is communicated with the water measuring device, and the water measuring device is communicated with the inner cylinder. When the above washing equipment fills water, the water is first injected into the water measuring device, and the water level in the water measuring device is detected, and then the water in the water measuring device is discharged into the inner cylinder, so as to accurately control the water amount of the inner cylinder.

[0005] However, if the detergent is injected into the water measuring device together with the water flow, the detergent can not be fully dissolved and deposited at the bottom of the water measuring device, thereby reducing the amount of detergent actually entering the inner cylinder and affecting the cleaning effect. In addition, for the case of heating the washing water, the heating device is arranged at the water measuring device, and the washing water needs to be heated in the water measuring device before being discharged into the inner cylinder. The washing water heating process consumes a long time, thereby reducing the washing efficiency.

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

[0007] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, and to provide a washing equipment and a control method thereof, which can achieve the purpose of first accumulating water and circulating, and then injecting water into the inner cylinder for the washing equipment with the inner cylinder independently holding water, and the water path control structure is relatively simplified.

[0008] To solve the above technical problems, the basic idea of the technical solution of the present application is:

[0009] A washing device comprises:

[0010] An outer cylinder;

[0011] An inner cylinder rotatably arranged inside the outer cylinder and capable of independently containing water during washing;

[0012] A water storage tank arranged below the outer cylinder and capable of independently storing water;

[0013] A circulation pipe in communication with the water storage tank, and a water pump arranged on the circulation pipe;

[0014] A water inlet pipe having an inlet end in communication with the circulation pipe and an outlet end in communication with the inner cylinder;

[0015] A control valve for switching the water pump to execute a first working state or a second working state;

[0016] When the water pump executes the first working state, it drives the water in the water storage tank to enter the circulation pipe and then return to the water storage tank along the circulation pipe, forming a circulation; when the water pump executes the second working state, it drives the water in the water storage tank to enter the water inlet pipe along the circulation pipe and then inject into the inner cylinder along the water inlet pipe.

[0017] Further, the control valve is arranged on the circulation pipe; or the water storage tank has a water inlet, the outlet end of the circulation pipe is connected to the water inlet, and the control valve is arranged at the water inlet of the water tank;

[0018] The water pump is arranged between the inlet end of the circulation pipe and the control valve;

[0019] The inlet end of the water inlet pipe is connected between the water pump and the control valve, and the water inlet pipe is at least partially higher than the top of the water storage tank;

[0020] When the control valve is opened, the water pump executes the first working state;

[0021] When the control valve is closed, the water pump executes the second working state.

[0022] Further, the control valve is a three-way switching valve, the inlet of the three-way switching valve is in communication with the water outlet end of the water pump, the first outlet of the three-way switching valve is in communication with the water storage tank, and the second outlet is in communication with the water inlet pipe;

[0023] The control valve is in communication with the water outlet end of the water pump and the water storage tank, and the water pump executes the first working state;

[0024] The control valve is in communication with the water outlet end of the water pump and the water inlet pipe, and the water pump executes the second working state.

[0025] Further, the control valve is arranged on the circulation pipe; or, the water storage tank has a circulation water outlet, the first end of the circulation pipe is connected at the circulation water outlet, and the control valve is arranged at the circulation water outlet of the water storage tank.

[0026] The water pump is a bidirectional pump, arranged between the second end of the circulation pipe and the control valve.

[0027] The inlet end of the water inlet pipe is connected between the water pump and the control valve.

[0028] When the control valve is opened, the water pump executes a first working state, and drives water flow from the second end of the circulation pipe into the water storage tank.

[0029] When the control valve is closed, the water pump executes a second working state, and drives water in the water storage tank from the second end of the circulation pipe into the circulation pipe.

[0030] Further, the water storage tank and the outer cylinder are integrally formed, and connected at the bottom of the outer cylinder; or, the water storage tank and the outer cylinder are separate parts, and the water storage tank is mounted at the bottom of the outer cylinder.

[0031] And / or, further comprising a heating device, arranged on the circulation pipe, or arranged in the water storage tank.

[0032] Preferably, further comprising a temperature detector, arranged on the circulation pipe, or arranged in the water storage tank.

[0033] Further, the water storage tank is connected with a water injection pipe, and water is injected into the water storage tank through the water injection pipe; the water injection pipe is connected at a region of the peripheral wall of the water storage tank close to the top.

[0034] Preferably, the washing device has a detergent dispenser, and the inlet end of the water injection pipe is connected on the detergent dispenser.

[0035] A control method of the washing device, the control valve switches the water pump to execute a first working state, starts the water pump, and drives water in the water storage tank to form a circulation flow along the circulation pipe.

[0036] The control valve switches the water pump to execute a second working state, starts the water pump, and drives water in the water storage tank to be injected into the inner cylinder along the water inlet pipe.

[0037] Further, the washing device is provided with a heating device for heating water in the water storage tank.

[0038] In the last rinsing stage of the washing program, the washing device injects water into the water storage tank to reach a preset water injection amount.

[0039] After the washing equipment is started again, before the washing program is started, the control valve switches the water pump to execute the first working state, starts the heating device and the water pump, and performs circulating heating on the water in the water storage tank.

[0040] After the washing program is started, the water in the water storage tank is detected to reach the set temperature, the control valve switches the water pump to execute the second working state, and the water pump runs to inject the water in the water storage tank into the inner drum through the water inlet pipe.

[0041] Further, water is supplemented into the water storage tank after the washing program is started; the washing equipment obtains the amount of clothes in the inner drum, determines the water consumption of the washing stage according to the amount of clothes, supplements water into the water storage tank to the water level corresponding to the water consumption, and then injects the water heated to the set temperature into the inner drum.

[0042] Further, during the washing stage and / or the intermediate rinsing stage of the washing program, the washing equipment injects water into the water storage tank, and the amount of water injected is the water consumption of the next rinsing stage.

[0043] When water is injected in the next rinsing stage, the control valve switches the water pump to execute the second working state, and starts the water pump to inject the water in the water storage tank into the inner drum through the water inlet pipe.

[0044] After the above technical solutions are adopted, the present application has the following beneficial effects compared with the prior art.

[0045] In the present application, through cooperation with the control valve, the water pump can drive the water in the water storage tank to form microcirculation along the circulating pipe and can also drive the water flow to be injected into the inner drum along the water inlet pipe, so that multiple water flow driving devices do not need to be arranged, and the water path control structure is simplified.

[0046] In the present application, through circulating the water in the water storage tank, the dissolution of the washing agent in the water can be accelerated, and then the washing agent in the washing water injected into the inner drum is fully and uniformly dissolved, so that the washing effect is ensured. In addition, the water is circulated during the heating process, which can improve the heating efficiency and shorten the heating time, thereby ensuring the washing efficiency, and on the other hand, the water flow is heated during the flowing process, which is beneficial to reducing or preventing scale deposition.

[0047] In the present application, the washing equipment injects water into the water storage tank in the last rinsing stage of each washing program, and after the washing equipment is started again, the water in the water storage tank can be heated before the washing program is started, so that the time required for heating the washing water to the set temperature after the washing program is started is further shortened. The obtaining of the amount of clothes in the inner drum and the supplement of water into the water storage tank can be performed synchronously, and the washing efficiency is further improved.

[0048] In the present application, the water storage tank is filled with water when the washing device is running the washing stage and / or the intermediate rinsing stage, and the next rinsing stage can directly inject rinsing water into the inner drum from the water storage tank. Compared with the water inlet process relying on the external water pressure of the tap water, the water injection speed from the water storage tank to the inner drum driven by the water pump is faster, and the water inlet time is saved. At the same time, during each dehydration process, the water storage tank can play the role of the bottom counterweight of the outer drum due to the storage of a certain amount of water, so as to reduce the vibration amplitude during the dehydration process.

[0049] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0050] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application, but do not constitute an improper limitation on the present application. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained from these drawings by those of ordinary skill in the art without creative labor. In the drawings:

[0051] Figure 1 is a structural schematic diagram of the washing device in the first embodiment of the present application;

[0052] Figure 2 is a front view of the washing device in the first embodiment of the present application (removing the machine shell, the machine door and the waterway structure);

[0053] Figure 3 is a structural schematic diagram of the washing device in the second embodiment of the present application;

[0054] Figure 4 is a front view of the washing device in the second embodiment of the present application (removing the machine shell, the machine door and the waterway structure);

[0055] Figure 5 is a structural schematic diagram of the washing device in the third embodiment of the present application;

[0056] Figure 6 is a structural schematic diagram of the washing device in the fifth embodiment of the present application;

[0057] Figure 7 is a structural schematic diagram of the washing device in the sixth embodiment of the present application (the water pump executes the first working state);

[0058] Figure 8 is a structural schematic diagram of the washing device in the sixth embodiment of the present application (the water pump executes the second working state).

[0059] In the diagram: 100, casing; 200, door; 210, window gasket; 300, drain pipe; 410, water inlet pipe; 420, water tank; 421, first connector; 422, second connector; 423, third connector; 430, circulation pipe; 440, water pump; 450, control valve; 460, water inlet pipe; 500, heating device; 510, thermometer; 600, drive motor; 710, outer cylinder; 712, fourth connector; 720, inner cylinder; 810, water inlet valve; 820, flushing pipe; 830, detergent dispensing device; 900, damper.

[0060] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0062] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0063] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0064] Embodiments of the present invention provide a washing device and a control method for the washing device. The washing device may be a household appliance with clothing cleaning functions, such as a washing machine, washer-dryer combo, or garment care machine.

[0065] Specifically, such as Figures 1 to 4 As shown, the washing device has an outer drum 710 and an inner drum 720. The inner drum 720 is rotatably disposed inside the outer drum 710 and can independently hold water during the washing process.

[0066] More specifically, in the embodiment of the present application, the inner drum 720 is not provided with the dewatering holes, and is provided with the water passing holes with sealing valves only in the partial area, such as the mounting area covered by the lifting ribs (not shown in the figure). During the washing process, the sealing valves keep the water passing holes closed, and the inner drum 720 can hold the laundry and store water at the same time, while the outer drum 710 does not store water. During the draining and dewatering process, the sealing valves can open the water passing holes, so as to drain the water in the inner drum 720 into the outer drum 710, and then drain the water collected in the outer drum 710.

[0067] As a specific structure, the washing apparatus has a cabinet 100, and the outer drum 710 is arranged inside the cabinet 100. A hanging spring (not shown in the figure) is arranged between the outer drum 710 and the top wall of the cabinet 100, for hanging the outer drum 710. A damper 900 is arranged between the outer drum 710 and the bottom wall of the cabinet 100, for assisting the support of the outer drum 710 inside the cabinet 100. The damper 900 can reduce the vibration of the outer drum 710 during the operation of the washing apparatus.

[0068] In a further scheme, a water storage tank 420 is arranged below the outer drum 710. The water storage tank 420 is connected to an external water source through a water inlet system, and is communicated with the inner drum 720 through a water inlet pipe 460. The washing apparatus is further provided with a water pump 440. When the washing apparatus is filled with water, the tap water is first injected into the water storage tank 420, and then the water in the water storage tank 420 is driven by the water pump 440 to be injected into the inner drum 720 through the water inlet pipe 460.

[0069] Further, the water inlet system includes a flushing pipe 820, a detergent dispenser 830, and a water injection pipe 410. The flushing pipe 820 is connected to the external water source, and is provided with a water inlet valve 810 for controlling the opening and closing of the flushing pipe 820. The outlet end of the flushing pipe 820 is connected to the detergent dispenser 830, so as to flush the distributor box of the detergent dispenser 830, and make the detergent in the distributor box mixed with water and then discharged. The water injection pipe 410 is connected to the detergent dispenser 830 at one end, and is connected to the water storage tank 420 at the other end, for guiding the mixture of the detergent and water into the water storage tank 420.

[0070] The washing apparatus is further provided with a heating device 500, for heating the water in the water storage tank 420, and then injecting the water into the inner drum 720. The laundry is washed by the heated water, which is beneficial to improve the washing effect of the laundry.

[0071] However, the washing apparatus with the above structure has the following problems.

[0072] First, the detergent entering the water storage tank 420 is likely to be not fully dissolved, at this time the detergent is easy to deposit at the bottom of the water storage tank 420, or adhere to the inner wall of the water storage tank 420, resulting in that the detergent cannot enter the inner drum 720 completely, so that the amount of detergent actually participating in the washing process is insufficient, affecting the washing effect.

[0073] Second, the tap water needs to be heated to a certain temperature in the water storage tank 420 before being injected into the inner drum 720, and the heating process will consume a long time, and the heated water does not contact the clothes at this time, so the time consumed by the heating process cannot play a role in washing clothes, reducing the washing efficiency.

[0074] Embodiment one

[0075] The embodiment provides a washing device for solving the problems of the above-mentioned difficulty of fully dissolving the detergent and the long heating time affecting the washing efficiency.

[0076] As shown in Figure 1 and Figure 2 The washing device provided by the embodiment comprises an outer drum 710, an inner drum 720 rotatably arranged in the inner drum 710, and the inner drum 720 can independently hold water during the washing process. A water storage tank 420 is arranged below the outer drum 710, and the water storage tank 420 is independent of the outer drum 710 for water storage. The water storage tank 420 is in communication with a water inlet pipe 460, and the water in the water storage tank 420 can be injected into the inner drum 720 through the water inlet pipe 460 for washing clothes.

[0077] Specifically, a driving motor 600 is mounted outside the bottom of the outer drum 710, and the driving motor 600 is in transmission connection with the inner drum 720 through the bottom of the outer drum 710, for driving the inner drum 720 to rotate in the outer drum 710.

[0078] The washing device is further provided with a circulation pipe 430, and a water pump 440 is arranged on the circulation pipe 430. The water pump 440 can draw the water in the water storage tank 420 into the circulation pipe 430, and flow back to the water storage tank 420 along the circulation pipe 430, to form a microcirculation in the water storage tank 420.

[0079] In the specific structure of the embodiment, the circulation pipe 430 is arranged outside the water storage tank 420, and the inlet end and the outlet end of the circulation pipe 430 are connected to the corresponding openings of the water storage tank 420. More specifically, the water storage tank 420 has a water outlet and a water inlet, which are connected to the inlet end and the outlet end of the circulation pipe 430, respectively.

[0080] Further, the water storage tank 420 in the embodiment is connected to the detergent feeding device 830 of the washing machine, and can send the mixture of the detergent and water into the water storage tank 420, and then into the inner drum 720 after sufficient mixing. The circulation flow of the mixture between the water storage tank 420 and the circulation pipe 430 driven by the water pump 440 can accelerate the dissolution of the detergent, and make the mixture of the detergent and water more sufficient, so as to avoid the existence of the detergent residue in the water storage tank 420, and affect the cleaning effect.

[0081] The washing machine is further provided with the heating device 500 for heating the water in the water storage tank 420. During the heating process, the circulation of the liquid driven by the water pump 440 can improve the heating efficiency, and faster complete the heating process, and can also make the water temperature in the water storage tank 420 more uniform, and achieve the high efficient and uniform heating effect.

[0082] In the embodiment, the water in the water storage tank 420 needs to be provided with corresponding driving force when being sent into the inner drum 720. In order to avoid the water circuit control structure of the washing machine being too complex due to the setting of the circulation pipe 430 and the water pump 440 for driving the circulation, the control valve 450 is arranged on the water circuit structure in the embodiment, and cooperates with the water pump 440, and can switch the water pump 440 to execute the first working state or the second working state.

[0083] Specifically, the water pump 440 executes the first working state, which means that the water pump 440 drives the water in the water storage tank 420 to enter the circulation pipe 430, and then returns to the water storage tank 420 along the circulation pipe 430, and forms the micro circulation. The water pump 440 executes the second working state, which means that the water pump 440 drives the water in the water storage tank 420 to enter the water inlet pipe 460 along the circulation pipe 430, and then injects into the inner drum 720 along the water inlet pipe 460.

[0084] The washing machine in the embodiment further has the following structure.

[0085] The control valve 450 for controlling the on-off of the circulation pipe 430 is arranged on the circulation pipe 430 between the outlet end of the circulation pipe 430 and the water pump 440. The inlet end of the water inlet pipe 460 is connected to the region of the circulation pipe 430 between the water pump 440 and the control valve 450, and the outlet end is communicated with the inner drum 720. The water inlet pipe 460 is at least partially higher than the top of the water storage tank 420.

[0086] In the above scheme, the control valve 450 is a shut-off valve only having two states of opening and closing. When the control valve 450 is opened, the circulation pipe 430 can be communicated, and when the control valve 450 is closed, the circulation pipe 430 is cut off.

[0087] With the above structure, the water inlet pipe 460 has a portion higher than the top of the water storage tank 420, and the water head along the water inlet pipe 460 is much greater than the water head along the circulation pipe 430. With respect to the path of water flowing from the water inlet pipe 460 to the inner cylinder 720, the rear section of the circulation pipe 430, i.e. the section between the connection of the water inlet pipe 460 and the outlet end of the circulation pipe 430 connected to the water storage tank 420, forms a bypass pipe. When the control valve 450 is closed, the water discharged from the outlet end of the water pump 440 can only flow to the water inlet pipe 460. However, when the control valve 450 is opened and the water pump 440 is started, the water discharged from the outlet end of the water pump 440 can flow into the bypass pipe, causing a flow split, which reduces the water flow to the water inlet pipe 460 and results in a decrease in the water pressure of the water flow in the water inlet pipe 460.

[0088] When the control valve 450 is closed, the water pumped by the water pump 440 has sufficient pressure to flow upwards along the water inlet pipe 460, over the highest point of the water inlet pipe 460, and then into the inner cylinder 720. When the control valve 450 is opened, the flow split along the rear section of the circulation pipe 430 reduces the water pressure of the water flow in the water inlet pipe 460, and thus the maximum height that the water flow can reach inside the water inlet pipe 460 is also reduced. By properly setting the water pressure at the outlet end of the water pump 440, when the control valve 450 is opened, the water pressure of the water flow in the water inlet pipe 460 is insufficient to cause the water flow to reach the highest point of the water inlet pipe 460, and thus when the water pump 440 is running, only a micro-circulation of the water flow is formed, and no water is injected into the inner cylinder 720.

[0089] In the present embodiment, when the control valve 450 is in the open and closed states, the maximum height that the water flow can reach along the water inlet pipe 460 is different. When the control valve 450 is opened, the maximum height that the water flow can reach along the water inlet pipe 460 is reduced by a certain value compared to when the control valve 450 is closed. This is because part of the water flow returns to the water storage tank 420 along the circulation pipe 430, which reduces the water flow to the water inlet pipe 460 and lowers the water pressure.

[0090] In order to control the switching of the working state of the water pump 440 by the control valve 450, in the present embodiment, the rated pumping height H0 of the water pump 440 and the reduction value AH of the pumping height caused by the water flow loss along the rear section of the circulation pipe 430 when the control valve 450 is opened need to satisfy: 0 < (H0-H1) < AH.

[0091] Here, the rated pumping height H0 refers to the maximum height that the water flow can reach when the water pump 440 is running at rated power to pump water upwards. H1 is the set pumping height, which is the height difference between the outlet end of the water pump 440 and the highest point of the water inlet pipe 460.

[0092] The reduction value AH of the pumping height can be determined by pre-test, specifically, the rated pumping height H0 of the water pump 440 and the actual pumping height H2 of the water pump 440 when the control valve 450 is open for circulating water flow are determined, and the reduction value AH of the pumping height is H0-H2.

[0093] It can be understood that the actual pumping height H2 described above is the maximum height that the water flow can reach when the water pump 440 runs at rated power to pump water upward when the control valve 450 is open for circulating water flow.

[0094] In the embodiment, the control valve 450 cooperates with the water pump 440 to make one water pump 440 provide both circulating power and power for water inflow of the inner cylinder 720. The control valve 450 can be a simple shut-off valve, which uses the different pipe head of the water inflow pipe 460 and the circulating pipe 430 to control the opening and closing of the control valve 450, so as to switch the two different flow modes of water flow along the circulating pipe 430 and along the water inflow pipe 460 into the inner cylinder 720. Without using a complex three-way switch valve and without setting multiple water flow driving devices, the waterway control structure is simplified.

[0095] It can be understood that the control valve can also be arranged at the water inlet of the water storage tank, and the same effect of switching the working state of the water pump can be achieved.

[0096] In a further scheme of the embodiment, the control valve 450 is arranged close to the outlet end of the circulating pipe 430, and the inlet end of the water inflow pipe 460 is arranged close to the control valve 450.

[0097] In the above scheme, the control valve 450 cuts off the circulating pipe 430 close to the outlet end of the circulating pipe 430, and the inlet end of the water inflow pipe 460 is connected to the circulating pipe 430 close to the control valve 450, so that the distance between the inlet end of the water inflow pipe 460 and the outlet end of the circulating pipe 430 is very short. In this way, when the control valve 450 is open, it is easier to realize that the water pump 440 runs to drive the water in the water storage tank 420 to form a circulating flow along the circulating pipe 430, and will not enter the water inflow pipe 460.

[0098] In a further scheme of the embodiment, the inlet end and the outlet end of the circulating pipe 430 are connected to the bottom of the water storage tank 420, the water inflow pipe 460 extends upward at least partially, and the outlet end of the water inflow pipe 460 penetrates the window cushion 210 at the barrel opening of the outer cylinder 710 and discharges water toward the barrel opening of the inner cylinder 720.

[0099] As a specific structure, the water storage tank 420 extends along the axis direction of the outer cylinder 710 for a certain length, the inlet end of the circulation pipe 430 is connected to the front end of the bottom of the water storage tank 420 near the cylinder mouth of the outer cylinder 710, and the outlet end of the circulation pipe 430 is connected to the rear end of the bottom of the water storage tank 420 near the cylinder bottom of the outer cylinder 710.

[0100] In another solution, the inlet end and the outlet end of the circulation pipe can also be respectively connected to the bottom of the two side surfaces of the water storage tank, so that the circulation pipe does not occupy the space below the water storage tank, and the volume of the water storage tank can be increased.

[0101] As a specific structure, the inlet end of the circulation pipe is connected to the bottom of the left side surface of the water storage tank near the front end, and the outlet end of the circulation pipe is connected to the bottom of the right side surface of the water storage tank near the rear end, thereby forming a diagonal distribution structure.

[0102] With the above structure, when the control valve 450 is opened and the water pump 440 is started, the water in the water storage tank 420 is drawn into the circulation pipe 430 from the area near the front end, flows along the circulation pipe 430, and returns to the water storage tank 420 from the area near the rear end, so that the water in the water storage tank 420 has a flow trend from the rear end to the front end. In this way, the area covered by the water flow in the water storage tank 420 is larger, and the stirring effect on the water in the water storage tank 420 is more sufficient, which is beneficial to more fully dissolving the detergent or more efficiently completing the heating.

[0103] As a specific embodiment, two circulation joints are arranged at the bottom of the water storage tank 420, which are a first joint 421 arranged at the water outlet and a second joint 422 arranged at the water inlet. The inlet end of the circulation pipe 430 is connected to the first joint 421, and the outlet end is connected to the second joint 422.

[0104] In a preferred solution, the inlet end and the outlet end of the circulation pipe 430 are diagonally arranged at the bottom of the water storage tank 420. For example, referring to Figure 1 and Figure 2 The first joint 421 is arranged at the front end right side area of the bottom of the water storage tank 420 to connect the inlet end of the circulation pipe 430, and the second joint 422 is arranged at the rear end left side area of the bottom of the water storage tank 420 to connect the outlet end of the circulation pipe 430. In this way, the flow sufficiency of the water flow in the water storage tank 420 during circulation can be further enhanced.

[0105] It can be understood that the arrangement positions of the first joint and the second joint can also be transposed left and right, that is, the first joint is arranged at the front end left side area of the bottom of the water storage tank, and the second joint is arranged at the rear end right side area of the bottom of the water storage tank.

[0106] In a detailed structure, the circulation pipe 430 at least comprises a front main section and a circulation rear section. The front main section is connected with the first joint 421 at one end and connected with a tee structure at the other end. The tee structure has two other openings, one of which is connected with the water inlet pipe 460 and the other is connected with the circulation rear section of the circulation pipe 430, which is further connected with the second joint 422. The control valve 450 is arranged on the circulation rear section.

[0107] In more detail, the water inlet pipe 460 extends from its inlet end to the rear side, extends upwardly at the rear side of the outer cylinder 710 and then extends to the front side where the cylinder opening is located, and finally bends downwardly, passes through the window pad 210 from the top, and bends inwardly to the direction of the cylinder opening of the inner cylinder 720 while avoiding the observation window protruding from the machine door 200 to the direction of the cylinder opening. The outlet end of the water inlet pipe 460 faces the cylinder opening of the inner cylinder 720, and the washing water flowing along the water inlet pipe 460 flows out from the outlet end of the water inlet pipe 460, enters the inner cylinder 720 through the cylinder opening of the inner cylinder 720.

[0108] In a further scheme of the embodiment, the water storage tank 420 is connected to the bottom of the outer cylinder 710 and is integrally formed with the outer cylinder 710.

[0109] As a specific implementation, the lower part of the outer cylinder 710 is further provided with dampers 900, and the outer cylinder 710 is supported inside the machine case 100 with the aid of the dampers 900. The upper end of the damper 900 is hinged to the cylinder wall of the outer cylinder 710 and extends downwardly and is hinged to the machine case 100. The cylinder wall of the outer cylinder 710 is connected with the dampers 900 near the left and right sides, respectively, and the water storage tank 420 is arranged between the dampers 900 on the left and right sides.

[0110] In the above scheme, the water storage tank 420 and the outer cylinder 710 are integrally formed, and compared with the structure of the existing technology in which the counterweight or water tank is externally hung, the stress at the connection between the outer cylinder 710 and the water storage tank 420 is more uniform, and there is no problem of stress concentration at the hanging point, so that the service durability of the outer cylinder 710 is stronger.

[0111] In another scheme of the embodiment, the water storage tank 420 and the outer cylinder 710 can also be provided as separate parts, that is, they are separately manufactured, and then the water storage tank 420 is installed at the bottom of the outer cylinder 710.

[0112] In a further scheme of the embodiment, the heating device 500 is arranged on the circulation pipe 430. When the control valve 450 is opened and the water pump 440 is started, the liquid in the water storage tank 420 is continuously pumped out, flows along the circulation pipe 430, passes through the heating device 500, and then returns to the water storage tank 420, which is conducive to efficiently completing the heating process.

[0113] In a preferred embodiment, the circulating pipe 430 is further provided with a temperature detector 510, which is used to detect the temperature of the water flowing through the circulating pipe 430, and thus determine the temperature of the water in the water storage tank 420.

[0114] It can be understood that the heating device and the temperature detector can also be arranged inside the water storage tank.

[0115] As a specific embodiment, the water pump 440, the heating device 500, the temperature detector 510 and the control valve 450 are arranged in sequence along the direction of the water flow in the circulating pipe 430, and the three-way structure for connecting the water inlet pipe 460 is arranged between the temperature detector 510 and the control valve 450.

[0116] In a further embodiment, the water storage tank 420 is connected to the water injection pipe 410, and water is injected into the water storage tank 420 through the water injection pipe 410. Specifically, the inlet end of the water injection pipe 410 is connected to the detergent dispensing device 830 of the washing equipment, and the washing equipment injects water into the detergent dispensing device 830 to form a mixture of detergent and water, and the mixture enters the water storage tank 420 through the water injection pipe 410.

[0117] More specifically, the washing equipment is provided with a flushing pipe 820, which is provided with a water inlet valve 810 for controlling the opening and closing of the flushing pipe 820. One end of the flushing pipe 820 is connected to an external water source, and the other end leads to the detergent dispensing device 830. When the water inlet valve 810 is opened, water can be injected to flush the dispenser box of the detergent dispensing device 830, so that the detergent therein mixes with water and is discharged. One end of the water injection pipe 410 is connected to the bottom of the detergent dispensing device 830 and extends downward to be connected to the water storage tank 420, so as to guide the mixture of detergent and water into the water storage tank 420.

[0118] Further, in the present embodiment, the outlet end of the water injection pipe 410 is connected to the area near the top of the peripheral wall of the water storage tank 420, so as to ensure that after the water storage tank 420 is filled with water, there is no liquid remaining in the water injection pipe 410. If there is liquid remaining in the water injection pipe 410, it is difficult for this part of the remaining liquid to participate in the circulation process driven by the water pump 440, which can easily lead to uneven heating of the water, or insufficient and uneven mixing of the detergent.

[0119] As a specific embodiment, the water storage tank 420 is further provided with a third joint 423, and the outlet end of the water injection pipe 410 is connected to the third joint 423. The water storage tank 420 has a certain extension length along the axis direction of the outer cylinder 710, and the third joint 423 is arranged on one of the end walls of the water storage tank 420 and is close to the top of the end wall.

[0120] More specifically, the third joint 423 is located at the same end of the water storage tank 420 as the first joint 421. In a specific structure of the present embodiment, the first joint 421 is arranged at the front end of the bottom of the water storage tank 420 near the opening of the outer drum 710, and the third joint 423 is arranged at the top area of the front wall of the water storage tank 420 and near the side where the detergent dispenser 830 is arranged.

[0121] In a further structure, the flushing pipe 820 and the detergent dispenser 830 are arranged inside the machine cabinet 100 near one side, and the third joint 423 is arranged at the top area of the front wall of the water storage tank 420 and near the side where the detergent dispenser 830 is arranged. The water inlet pipe 410 extends downward from the bottom of the detergent dispenser 830, can avoid the window cushion 210 and the surrounding structure at the opening of the outer drum 710, and is connected to the third joint 423.

[0122] Furthermore, in the width direction (i.e. the left-right direction) of the water storage tank 420, the first joint 421 and the third joint 423 are arranged at opposite sides. As a specific structure, the first joint 421 is arranged at the front end of the right side area of the bottom of the water storage tank 420, and the third joint 423 is arranged at the upper left corner of the front wall of the water storage tank 420. Figure 2

[0123] With the above structure, the liquid entering the water storage tank 420 along the water inlet pipe 410 flows to the right side into the circulation pipe 430 under the driving action of the water pump 440, thereby participating in the circulation process, and the liquid in the circulation pipe 430 returns to the bottom of the water storage tank 420 through the rear end of the left side area of the bottom of the water storage tank 420, and then flows to the front end of the right side area of the bottom of the water storage tank 420 to form a circulation. In this way, the liquid in each part of the water storage tank 420 can be fully driven to participate in the circulation process, promoting the complete dissolution of the detergent and accelerating the heating process, and the effect is better.

[0124] In a further scheme of the present embodiment, the bottom of the outer drum 710 is provided with a fourth joint 712, and the drain pipe 300 is connected through the fourth joint 712 and extends to the outside of the machine cabinet 100. The drain pipe 300 can be connected to the drainage system such as a floor drain in the user's home, and the water discharged from the inner drum 720 can be directly discharged into the drainage system through the drain pipe 300.

[0125] In a specific structure, the extension length of the water storage tank 420 along the axis of the outer drum 710 is less than the axial length of the drum wall of the outer drum 710. The water storage tank 420 is arranged relatively closer to the bottom of the outer drum 710, and there is a certain size of area at the bottom of the drum wall of the outer drum 710 near the opening that is not covered by the water storage tank 420, and the fourth joint 712 is arranged in this area.

[0126] ​In another more preferred structure, the water storage tank is aligned with the front of the outer cylinder, and a fourth joint is arranged in a region of the bottom of the outer cylinder wall near the end of the cylinder bottom which is not covered by the water storage tank, and a drain pipe is connected to the fourth joint. The above arrangement makes the center of gravity of the overall structure of the outer cylinder and the water storage tank biased forward, and is more balanced with the driving motor arranged at the rear end of the outer cylinder, and can further improve stability. At the same time, the drain pipe extends from the rear side of the machine shell, and the fourth joint is arranged in a region near the bottom of the outer cylinder, so that the length of the drain pipe can be shorter, thereby saving costs.

[0127] In the embodiment, the inner cylinder 720 is not provided with a dewatering hole, but is only provided with a water passing hole with a sealing valve in a local region. During washing, the sealing valve keeps the water passing hole blocked, so as to realize independent water storage in the inner cylinder 720, and the outer cylinder 710 does not store water during washing. During draining and dewatering, the sealing valve can open the water passing hole, so as to drain the water in the inner cylinder 720 into the outer cylinder 710, and then drain the water along the drain pipe 300.

[0128] As a specific implementation, the sealing valve can open the water passing hole under the centrifugal force of the rotation of the inner cylinder 720. During draining and dewatering, the inner cylinder 720 is controlled to rotate at a set draining rotation speed, so as to open the water passing hole and drain the washing water into the outer cylinder 710.

[0129] Since the outer cylinder 710 is not used for water storage, but only used for collecting the drainage of the inner cylinder 720 and then discharging, the lower drainage structure can be used, the setting of the drainage pump or other drainage driving device is omitted, costs are saved, and the disadvantages of the upper drainage structure can be avoided, and no sewage can be completely left after the drainage is completed. At the same time, the drainage valve on the drain pipe 300 can be kept in a constant open state. In addition, since the drainage driving device is omitted, the lint filter cooperating with the drainage driving device also does not need to be arranged, and costs are further saved.

[0130] In addition, since the water flow driven by the water pump 440 is tap water directly injected from an external water source, and does not contact the clothes in the inner cylinder 720, there is no lint in the water flow, and therefore the lint filter also does not need to be arranged, and costs can also be saved.

[0131] During washing, the inner cylinder 720 stores water independently, and the outer cylinder 710 does not store water, so that the amount of washing water can be greatly reduced, and the amount of washing agent can also be reduced. The washing water is only drained from the inner cylinder 720 to the outer cylinder 710, and there is no water flow from the outer cylinder 710 to the inner cylinder 720, and the water between the inner cylinder 720 and the outer cylinder 710 is not mixed, thereby avoiding the problem of cross contamination of clothes by pollutants between the inner cylinder 720 and the outer cylinder 710.

[0132] The working process of the washing equipment provided in the embodiment is specifically as follows.

[0133] When the washing machine is filled with water, the water inlet valve 810 is opened, and the tap water flows into the dispenser box of the detergent dispenser 830 through the flushing pipe 820, and the detergent is flushed out of the dispenser box to form a mixture with the tap water and then flows out of the detergent dispenser 830 and into the water storage tank 420 through the water injection pipe 410.

[0134] The control valve 450 is in the default open state, and when the water pump 440 is started, the liquid in the water storage tank 420 is driven to flow in a circulating manner along the circulating pipe 430, so that the liquid in the water storage tank 420 is continuously pumped out through the first joint 421 and then returned to the water storage tank 420 through the second joint 422, so that the detergent and water are fully mixed and dissolved. When the washing water needs to be heated, the heating device 500 can be turned on during the circulation process, so that the liquid continuously flows through the heating device 500 and is heated. During the heating process, the water flows in a circulating manner, which can improve the heating efficiency, speed up the heating speed, and also prevent scale from depositing on the inner wall of the heating device 500 and the water storage tank 420. Due to the circulation and diversion, the water pressure flowing along the water inlet pipe 460 is reduced, the water pumping height along the water inlet pipe 460 is reduced, and the water cannot reach the highest position of the water inlet pipe 460, so that when the control valve 450 is opened, the water cannot be injected into the inner drum 720 along the water inlet pipe 460.

[0135] After the detergent is fully dissolved and the heating is completed, the control valve 450 is closed, and the water pump 440 is operated to drive the liquid in the water storage tank 420 to flow into the inner drum 720 through the water inlet pipe 460. Since the water entering the inner drum 720 is fully dissolved, the washing effect is better.

[0136] In this embodiment, the washing machine is provided with the water storage tank 420 with the circulating pipe 430, so that when the water storage tank 420 contains water, the water can be circulated, the dissolution of the detergent can be accelerated by driving the liquid to circulate, and the washing water after the fully and uniformly dissolved detergent is injected into the inner drum 720, so that the clothes washing effect is ensured. When the washing water needs to be heated, the circulation and heating can be performed simultaneously, which improves the heating efficiency, saves the heating time, and makes the heating more uniform.

[0137] The circulation of the water in the water storage tank 420 and the water injection from the water storage tank 420 into the inner drum 720 are driven by the same water pump 440, and only the control valve 450 with on-off control function cooperates with the water pump 440, so that the water flow can be switched between the circulation along the circulating pipe 430 and the injection into the inner drum 720 along the water inlet pipe 460, without the need for a complex three-way switching valve or multiple water flow driving devices, so that the water path control structure is simplified. In addition, the water flow driven by the water pump 440 is water that has not contacted the clothes and does not carry lint, so that the problem of the entanglement of the lint and the failure of the water pump 440 does not exist, and a lint filter cooperating with the water pump 440 does not need to be arranged.

[0138] Embodiment Two

[0139] As Figure 3 and Figure 4 shown, the present embodiment provides a washing device, which is different from the above-mentioned embodiment one in that the position of the water storage tank 420 connecting pipeline is different.

[0140] Specifically, in the present embodiment, the inlet end of the circulation pipe 430 is connected to the rear end of the bottom of the water storage tank 420 close to the bottom of the outer cylinder 710, and the outlet end is connected to the front end of the bottom of the water storage tank 420 close to the cylinder port of the outer cylinder 710, so as to strengthen the full flow of water flow during circulation by increasing the distance between the inlet end and the outlet end of the circulation pipe 430.

[0141] In a preferred structure, the first joint 421 is arranged at the left side area of the rear end of the bottom of the water storage tank 420 to connect the inlet end of the circulation pipe 430, and the second joint 422 is arranged at the right side area of the front end of the bottom of the water storage tank 420 to connect the outlet end of the circulation pipe 430. In this way, the full flow of water flow in the water storage tank 420 during circulation can be further strengthened.

[0142] It can be understood that the first joint can also be arranged at the right side area of the rear end of the bottom of the water storage tank, and the second joint can be arranged at the left side area of the front end of the bottom of the water storage tank, as long as the above-mentioned two joints are arranged diagonally.

[0143] Further, the washing device with the above-mentioned structure has the inlet end of the water inlet pipe 460 connected to the area close to the cylinder port of the outer cylinder 710 on the circulation pipe 430. Specifically, the water inlet pipe 460 extends from the inlet end to the front side, extends upward on the front side of the outer cylinder 710 to a height higher than the window pad 210, then bends downward through the top of the window pad 210, bends inward to the direction of the cylinder port of the inner cylinder 720, and the outlet end is arranged toward the cylinder port of the inner cylinder 720.

[0144] Since the second joint 422 and the outlet end of the circulation pipe 430 connected to the second joint 422 are arranged close to the right side of the water storage tank 420, the inlet end of the water inlet pipe 460 close to the outlet end of the circulation pipe 430 is also arranged in a relatively close area to the right side, so that the water inlet pipe 460 can avoid the window pad 210 and the surrounding structure at the cylinder port of the outer cylinder 710 during the upward extension of the inlet end.

[0145] In a further structure of the present embodiment, the third joint 423 for connecting the water injection pipe 410 is arranged at the area close to the top of the rear end wall of the water storage tank 420, so that the third joint 423 and the first joint 421 are located at the same end of the water storage tank 420.

[0146] Further, the water injection pipe 410 is bent downward from the bottom of the detergent dispenser 830, and then extends to the rear side to avoid the outer tub 710, and then is bent downward at the rear side of the outer tub 710 to extend downward to be connected to the third joint 423. The rinse pipe 820 and the detergent dispenser 830 are disposed inside the cabinet 100 near one side, and the third joint 423 is disposed near the side where the detergent dispenser 830 is located, so that the water injection pipe 410 is easily connected.

[0147] As a specific embodiment, as shown in Figure 4 the third joint 423 is disposed at the upper left corner of the rear end wall of the water storage tank 420, and is located at the same side as the first joint 421 of the water storage tank 420.

[0148] In another specific embodiment, the first joint and the third joint can also be disposed at opposite sides of the water storage tank, so that the liquid in each part of the water storage tank can participate in the circulation process more fully.

[0149] In this embodiment, the water storage tank 420 of the washing apparatus is supplied with water from the rear end, and the water injection pipe 460 is connected to the circulation pipe 430 near the front end to inject water into the inner tub 720. Compared with the above-mentioned first embodiment, only the positions of the first joint 421, the second joint 422 and the third joint 423 are changed, and the arrangement of part of the pipes is adjusted correspondingly, and the working process of the first embodiment is also applicable. Therefore, the purpose of fully dissolving the detergent, efficiently and uniformly heating the washing water, and then injecting the washing water into the inner tub 720 can also be achieved, and the control valve 450 and the water pump 440 can be used to switch the flow direction of the water flow, so that the complicated water path control structure is avoided.

[0150] Embodiment Three

[0151] As shown in Figure 5 this embodiment, a washing apparatus is provided, which is different from the above-mentioned first or second embodiment in that the circulation pipe 430 and the water pump 440 are integrally disposed inside the water storage tank 420.

[0152] Specifically, in this embodiment, the inlet end and the outlet end of the circulation pipe 430 are both located inside the water storage tank 420, and no opening for connecting the circulation pipe 430 needs to be formed on the water storage tank 420. The inlet end of the water injection pipe 460 is connected to the circulation pipe 430 inside the water storage tank 420, and a through hole structure is formed on the water storage tank 420, and the water injection pipe 460 is sealingly disposed in the through hole structure to extend out of the inside of the water storage tank 420 upward to supply water to the inner tub 720.

[0153] Further, the control valve 450 is disposed at a region between the connection position of the water injection pipe 460 and the circulation pipe 430 and the outlet end of the circulation pipe 430. Alternatively, the control valve can also be directly disposed at the outlet end of the circulation pipe.

[0154] When the control valve 450 is opened, the water pump 440 is started to form a flow along the circulation pipe 430, and the water flow is not enough to pump to the highest part of the water inlet pipe 460, so that the water in the water storage tank 420 only forms an internal circulation along the circulation pipe 430 and does not inject water into the inner cylinder 720. When the control valve 450 is closed, the water pump 440 can only run in the direction of the water inlet pipe 460, so as to inject water into the inner cylinder 720.

[0155] In a specific structure of the embodiment, as shown in the figure, the heating device 500 and the temperature detector 510 can be arranged on the circulation pipe 430. In another specific structure, the heating device and the temperature detector can also be installed on the tank wall of the water storage tank. Figure 5

[0156] In the scheme of the embodiment, by arranging the circulation pipe 430 and the water pump 440 integrally inside the water storage tank 420, the space outside the water storage tank 420 is not occupied, and the volume of the water storage tank 420 can be further increased, so as to realize a larger water storage capacity without increasing the overall volume.

[0157] Embodiment Four

[0158] The embodiment provides a control method of the washing equipment according to any one of the above-mentioned embodiments one to three.

[0159] Specifically, as shown in the figure, the control method of the washing equipment in the embodiment includes: Figures 1 to 4

[0160] The control valve 450 switches the water pump 440 to execute the first working state, starts the water pump 440, and drives the water in the water storage tank 420 to form a circulation flow along the circulation pipe 430;

[0161] The control valve 450 switches the water pump 440 to execute the second working state, starts the water pump 440, and drives the water in the water storage tank 420 to inject into the inner cylinder 720 along the water inlet pipe 460.

[0162] More specifically, the washing equipment in the embodiment can switch the water pump 440 to execute the first working state by opening the control valve 450, and can switch the water pump 440 to execute the second working state by closing the control valve 450. Therefore, the control method of the washing equipment specifically includes:

[0163] opening the control valve 450, starting the water pump 440, and driving the water in the water storage tank 420 to form a circulation flow along the circulation pipe 430;

[0164] and closing the control valve 450, starting the water pump 440, and driving the water in the water storage tank 420 to inject into the inner cylinder 720 along the water inlet pipe 460.

[0165] ​​As a specific embodiment, the control valve 450 is in an open state by default, and is closed only when water is injected into the inner tub 720.

[0166] In the above scheme, the water pump 440 can provide power for both the circulation process and the water injection into the inner tub 720. When the liquid flow mode in the water storage tank 420 is changed, only the action of opening or closing the control valve 450 needs to be performed, and the control logic is simple and easy to implement.

[0167] In a further scheme of the embodiment, the washing appliance injects water into the water storage tank 420 to reach a preset water injection amount in the last rinse stage of the washing program. After the washing appliance completes the operation of the current washing program and is powered off, the control valve 450 is kept in an open state after the washing appliance is powered on again before the washing program is started, and the heating device 500 and the water pump 440 are started to circulate and heat the water in the water storage tank 420. After the washing program is started, the control valve 450 is kept in an open state, and the heating device 500 and the water pump 440 are kept in a running state. When it is detected that the water in the water storage tank 420 reaches a set temperature, the control valve 450 is closed, and the water pump 440 runs to inject the water in the water storage tank 420 into the inner tub 720 through the water inlet pipe 460.

[0168] Further, the water level detection device, such as a water level sensor, is arranged in the water storage tank 420 of the embodiment. The washing appliance can determine the water injection amount injected into the water storage tank 420 according to the water level detection result fed back by the water level detection device. Meanwhile, when the washing appliance injects water from the water storage tank 420 into the inner tub 720, the water level detection result fed back by the water level detection device can also be used to determine whether the water in the water storage tank 420 has been completely injected into the inner tub 720, so as to accurately control the water injection amount of the inner tub 720.

[0169] It can be understood that the washing appliance of the embodiment can only inject water into the inner tub 720 through the water storage tank 420. Therefore, the above-mentioned "water injection into the water storage tank 420 in the last rinse stage of the washing program" refers to the operation of injecting a certain amount of water into the water storage tank 420 after the water injection from the water storage tank 420 into the inner tub 720 is completed in the last rinse stage.

[0170] The "preset water injection amount" refers to the minimum water amount required for the water tank 420 to form a circulation under the driving of the water pump 440 and for the heating device 500 to start heating. More specifically, the "preset water injection amount" is slightly less than the minimum water amount required for the washing apparatus to run a washing program in the washing stage. In this way, if the water amount required for the washing program run by the washing apparatus in the next operation in the washing stage is exactly the minimum water amount, no separate water injection is required in addition to the water used for normally flushing the detergent. If the water amount required for the washing program run in the next operation in the washing stage is more, water can be continuously injected into the water tank 420 during the process of mixing the detergent and / or heating the washing water until the water amount required in the washing stage is reached. Through the above design, the water injection speed can be ensured, and at the same time, sufficient detergent concentration can be ensured.

[0171] The "set temperature" refers to the temperature of the washing water set for the current washing program.

[0172] Through the above scheme, the washing apparatus injects and stores a certain amount of water in the water tank 420 before the final dehydration stage of each washing program. After the washing apparatus is started again, the heating device 500 and the water pump 440 can be started before the user sets the washing program or even before the user closes the door 200, so as to preheat the water in the water tank 420. In this way, when the washing program is started, the water in the water tank 420 can reach the set temperature more quickly, and then is injected into the inner drum 720 to start washing, thereby saving the time for heating the washing water and improving the clothes washing efficiency. At the same time, the circulation of the water in the water tank 420 during the heating process can further improve the heating efficiency.

[0173] On the other hand, the washing apparatus injects water into the water tank 420 in the last rinsing stage of each washing program, and a certain amount of water is stored in the water tank 420 in the final dehydration stage after the last rinsing stage, so as to increase the mass of the components connected to the outer drum 710, act as a counterweight at the bottom of the outer drum 710, and greatly reduce the vibration amplitude of the outer drum 710 during the dehydration process.

[0174] Since the water amount stored in the water tank 420 is basically the minimum water amount required in the washing stage of all washing programs, the washing apparatus needs to perform the operation of supplementally injecting water into the water tank 420 after the washing program is started. In order to match the final water injection amount in the water tank 420 with the water amount required in the washing stage of the actual washing program, the washing apparatus of the embodiment further performs the following control process.

[0175] The water supplementing to the water storage tank 420 starts after the start of the washing program. At the same time, the washing machine acquires the amount of laundry in the inner drum 720, determines the water consumption of the washing stage according to the amount of laundry, supplements water to the water storage tank 420 to the water level corresponding to the water consumption, and then injects water heated to the set temperature into the inner drum 720.

[0176] As a specific embodiment, after the washing machine receives the start instruction of the washing program and detects that the machine door 200 is closed, the water inlet valve 810 is opened, tap water is injected to flush the dispenser box of the detergent dispenser 830, the detergent is injected into the water storage tank 420 together with the tap water, and the water in the water storage tank 420 is heated together. At the same time that the water inlet valve 810 is opened, the weighing system of the washing machine acquires the amount of laundry in the inner drum 720 by weighing.

[0177] After the weighing is completed, the water consumption of the washing stage is determined according to the obtained amount of laundry, the water inlet valve 810 remains open to continue supplementing water to the water storage tank 420. When the water storage tank 420 reaches the water level corresponding to the water consumption of the washing stage, the water inlet valve 810 is closed.

[0178] During the process of supplementing water to the water storage tank 420, and after the supplementing of water is completed, the heating device 500 and the water pump 440 remain in the running state, continuously heating and dissolving and mixing the detergent by using the circulation process. When it is detected that the water in the water storage tank 420 reaches the set temperature, the control valve 450 is closed, and the water pump 440 operates to inject the mixed liquid containing the detergent, which is fully mixed and reaches the standard temperature, into the inner drum 720.

[0179] In the above scheme, since the water is not in contact with the inner drum 720 during the process of injecting water into the water storage tank 420, the weighing can be performed while the water is being injected, thereby shortening the overall washing time.

[0180] In a further scheme of the embodiment, the washing machine injects water into the water storage tank 420 during the washing stage and / or the intermediate rinsing stage of the washing program, and the amount of water injected is the water consumption of the next rinsing stage. When water is injected in the next rinsing stage, the control valve 450 is closed, and the water pump 440 is started to inject the water in the water storage tank 420 into the inner drum 720 through the water inlet pipe 460.

[0181] As a specific embodiment, during the washing stage, the washing machine opens the water inlet valve 810, continuously injects water into the water storage tank 420, and closes the water inlet valve 810 when the water level in the water storage tank 420 reaches the water level corresponding to the water consumption of the next rinsing stage. After the washing stage, the main washing is drained and dehydrated, and in particular, the vibration amplitude is the largest at the initial stage of the main washing dehydration. Since a large amount of water has been accumulated in the water storage tank 420 at this time, the mass of the components connected to the outer drum 710 is increased, and the dehydration vibration can be greatly reduced.

[0182] After the main washing and dewatering, the control valve 450 is closed and the water pump 440 is started to quickly inject the water in the water storage tank 420 into the inner drum 720. Since the water injection into the inner drum 720 is driven by the water pump 440, the water injection speed is much faster than the water inlet speed of the tap water, thus the water injection time is shortened, and the overall washing time is further reduced.

[0183] Similarly, during each intermediate rinsing stage, the washing apparatus opens the water inlet valve 810 to continuously inject water into the water storage tank 420 until the water level in the water storage tank 420 reaches the water level corresponding to the water consumption of the next rinsing stage, and then closes the water inlet valve 810. After the current intermediate rinsing stage is completed, the intermediate rinsing dewatering and dehydration are performed, and the water storage in the water storage tank 420 is beneficial to reduce the vibration amplitude of the outer drum 710 during the dewatering process. After the intermediate rinsing dewatering is completed, the control valve 450 is closed, and the water pump 440 is started to inject the water in the water storage tank 420 into the inner drum 720, and the next rinsing stage is started.

[0184] In the above scheme, the water storage tank 420 stores water for a long time, which increases the overall mass of the outer drum 710 assembly, and the washing apparatus is more stable and has less vibration and lower working noise during each dewatering stage. Moreover, due to the significant reduction in vibration, the reserved gap between the drum wall of the outer drum 710 and the machine shell 100 can be greatly reduced, and the drum diameter of the outer drum 710 and the inner drum 720 can be increased without changing the overall size of the washing machine, thereby improving the washing capacity.

[0185] The water stored in the water storage tank 420 is used for the next washing / rinsing stage and is fresh water that does not deteriorate. When the washing apparatus injects water into the inner drum 720 each time, the water is directly injected by the water pump 440, which greatly saves the water injection time compared to the direct injection of tap water in the prior art, thereby shortening the overall washing time.

[0186] In the present embodiment, the washing apparatus injects a certain amount of water into the water storage tank 420 before the end of each washing program to prepare for the next washing program, and the water in the water storage tank 420 can be heated in advance before the start of the next washing program, thereby saving the heating time and shortening the overall washing time. During each stage, the water storage tank 420 is injected with the water required for the next stage, and when the water is injected into the inner drum 720, the water is injected into the inner drum 720 by the water pump 440, thereby shortening the water injection time and further shortening the overall washing time. In addition, since the water storage tank 420 has a certain amount of water storage each time, the mass of the assembly connected to the outer drum 710 is increased, which can greatly reduce the vibration amplitude of the outer drum 710, and the operation of the washing apparatus is more stable.

[0187] Embodiment Five

[0188] As Figure 6As shown, this embodiment provides a washing device, which differs from the above embodiments one to four in that: the control valve 450 is a three-way switching valve, which switches the water pump 440 to perform different working states by switching the connection direction of the pipeline.

[0189] Specifically, in this embodiment, the control valve 450 has an inlet, a first outlet, and a second outlet, and can control one of the first outlet and the second outlet to be connected to the inlet. The inlet and the first outlet are connected to the circulation pipe 430, and the second outlet is used to connect to the water inlet pipe 460.

[0190] More specifically, control valve 450 is installed on circulation pipe 430, downstream of water pump 440. The inlet of control valve 450 is connected to the outlet of water pump 440, and the first outlet of control valve 450 is connected to water storage tank 420. The inlet of water inlet pipe 460 is connected to the second outlet of control valve 450.

[0191] In this embodiment, when the inlet of the control valve 450 is connected to the first outlet, the outlet of the water pump 440 can be connected to the water storage tank 420. At the same time, the connection between the inlet pipe 460 and the circulation pipe 430 is cut off. At this time, the water pump 440 can run in the first working state, causing the water in the water storage tank 420 to form a micro-circulation along the circulation pipe 430.

[0192] When the inlet of the control valve 450 is connected to the second outlet, the inlet pipe 460 and the circulation pipe 430 are connected, and the outlet of the water pump 440 is no longer connected to the water storage tank 420. At this time, the water pump 440 can run in the second working state, injecting water from the water storage tank 420 into the inner cylinder 720 along the inlet pipe 460.

[0193] like Figure 6 As shown, in one specific embodiment, the circulation pipe 430 is located outside the water storage tank 420, and is connected to the water storage tank 420 by opening an outlet and an inlet. The specific connection position and method between the circulation pipe 430 and the water storage tank 420 can refer to any of the schemes in Embodiments 1 and 2, and will not be repeated here.

[0194] As another specific implementation, the circulation pipe and water pump can be installed as a whole inside the water storage tank, with the inlet pipe sealed through the tank wall and connected to the control valve located inside the water storage tank.

[0195] like Figure 6 As shown, in a further configuration, a heating device 500 and a thermometer 510 are mounted on the circulation pipe 430. In one specific embodiment, the heating device 500 and the thermometer 510 may be positioned between the water pump 440 and the control valve 450.

[0196] In another structure, the heating device and the temperature detector can also be installed on the wall of the water storage tank.

[0197] The washing device provided by the embodiment adopts the following control method:

[0198] The control valve 450 is switched to connect the inlet and the first outlet, the water pump 440 is started, and the water in the water storage tank 420 is driven to flow along the circulation pipe 430 to form a circulation flow.

[0199] The control valve 450 is switched to connect the inlet and the second outlet, the water pump 440 is started, and the water in the water storage tank 420 is driven to flow into the inner drum 720 through the water inlet pipe 460.

[0200] In a further scheme, the washing device injects water into the water storage tank 420 to reach a preset water injection amount in the last rinsing stage of the washing program. After the washing device completes the operation of the current washing program and is powered off, the control valve 450 keeps the state of connecting the inlet and the first outlet, the heating device 500 and the water pump 440 are started, and the water in the water storage tank 420 is heated in circulation. After the washing program is started, the control valve 450 keeps the current state, the heating device 500 and the water pump 440 keep running, and when the water in the water storage tank 420 reaches a set temperature, the control valve 450 is switched to connect the second outlet and the inlet, and the water pump 440 drives the water in the water storage tank 420 to flow into the inner drum 720 through the water inlet pipe 460.

[0201] In the above scheme, the specific meanings of the “preset water injection amount” and the “set temperature” are the same as those in Embodiment Four.

[0202] In a further scheme, the washing device starts to supplement water into the water storage tank 420 after the washing program is started. Meanwhile, the washing device obtains the amount of laundry in the inner drum 720, determines the water consumption of the washing stage according to the amount of laundry, supplements water into the water storage tank 420 to reach a water level corresponding to the water consumption, and then injects water heated to the set temperature into the inner drum 720.

[0203] As a specific implementation, after the washing device receives a start instruction of the washing program and detects that the machine door 200 is closed, the water inlet valve 810 is opened, tap water is injected to flush the dispenser box of the detergent dispenser 830, the detergent is injected into the water storage tank 420 together with the tap water, and the detergent is heated together with the water already in the water storage tank 420. At the same time that the water inlet valve 810 is opened, the weighing system of the washing device obtains the amount of laundry in the inner drum 720 by weighing.

[0204] After the weighing is completed, the water consumption of the washing stage is determined according to the obtained amount of laundry, the water inlet valve 810 keeps open to continue supplementing water into the water storage tank 420. When the water storage tank 420 reaches a water level corresponding to the water consumption of the washing stage, the water inlet valve 810 is closed.

[0205] During the process of replenishing water into the water storage tank 420, and after the replenishing process is completed, the heating device 500 and the water pump 440 remain in operation, and the water is continuously heated and dissolved and mixed with the detergent by the circulation process. When the water in the water storage tank 420 is detected to reach the set temperature, the control valve 450 is switched to the second outlet and the inlet, and the water pump 440 is operated to inject the mixed liquid containing the detergent into the inner drum 720.

[0206] In a further scheme of the embodiment, during the washing stage and / or the intermediate rinsing stage of the washing program, the washing machine injects water into the water storage tank 420, and the amount of water injected is the amount of water used in the next rinsing stage. When the water is injected in the next rinsing stage, the control valve 450 is switched to the inlet and the second outlet, and the water pump 440 is started to inject the water in the water storage tank 420 into the inner drum 720 through the water inlet pipe 460.

[0207] As a specific embodiment, during the washing stage, the washing machine opens the water inlet valve 810 to continuously inject water into the water storage tank 420 until the water level in the water storage tank 420 reaches the water level corresponding to the amount of water used in the next rinsing stage, and then closes the water inlet valve 810. After the washing stage, the main washing is drained and dehydrated, and in particular, at the beginning of the main washing dehydration, the vibration amplitude is the largest. Since a large amount of water has been stored in the water storage tank 420 at this time, the mass of the components connected to the outer drum 710 is increased, and the dehydration vibration can be greatly reduced.

[0208] After the main washing dehydration is completed, the control valve 450 is switched to the inlet and the second outlet, and the water pump 440 is started to quickly inject the water in the water storage tank 420 into the inner drum 720. Since the water injection process into the inner drum 720 is driven by the water pump 440, the water injection speed is much greater than the water inlet speed of tap water, and the time required for the water injection operation is shortened, thereby further reducing the overall washing time.

[0209] Similarly, during each intermediate rinsing stage, the washing machine opens the water inlet valve 810 to continuously inject water into the water storage tank 420 until the water level in the water storage tank 420 reaches the water level corresponding to the amount of water used in the next rinsing stage, and then closes the water inlet valve 810. After the current intermediate rinsing stage is completed, the intermediate rinsing is drained and dehydrated, and at this time, the water stored in the water storage tank 420 is beneficial to reduce the vibration amplitude of the outer drum 710 during the dehydration process. After the intermediate rinsing dehydration is completed, the control valve 450 is switched to the inlet and the second outlet, and the water pump 440 is started to inject the water in the water storage tank 420 into the inner drum 720, and the next rinsing can be started.

[0210] In this embodiment, a three-way switching valve is used as the control valve 450, and by switching the conduction direction of the control valve 450, switching control of different working states of the water pump 440 during operation is realized, and the purpose of using one water pump 440 to drive circulation and to inject water into the inner cylinder 720 can also be achieved.

[0211] Embodiment Six

[0212] As shown in Figure 7 and Figure 8 , this embodiment provides a washing apparatus, which is different from the above-mentioned embodiments one to five in that the water pump 440 is a bidirectional pump that can operate in two directions, and the flow direction of the water flow driven by the water pump 440 is different when different working states are executed.

[0213] Specifically, in this embodiment, the two ends of the circulation pipe 430 are a first end (i.e. the left end in Figure 7 and Figure 8 ) and a second end (i.e. the right end in Figure 7 and Figure 8 ), and the water pump 440 is arranged on the circulation pipe 430 and has a first water port facing the first end of the circulation pipe 430 and a second water port facing the second end of the circulation pipe 430. When the water in the water storage tank 420 is circulated, the water flow driven by the water pump 440 flows from the first water port to the second water port, and then the water in the water storage tank 420 can be sucked in from the first end of the circulation pipe 430, flows to the second end under the driving of the water pump 440, and is finally discharged from the second end to re-enter the water storage tank 420.

[0214] In this embodiment, the control valve 450 is a shut-off valve that only has two states of opening and closing, and the water pump 440 is arranged between the second end of the circulation pipe 430 and the control valve 450, and the connection between the water storage tank 420 and the first water port of the water pump 440 can be controlled by the control valve 450. The inlet end of the water inlet pipe 460 is arranged between the water pump 440 and the control valve 450.

[0215] As shown in Figure 7 , when the control valve 450 is opened, the water pump 440 executes the first working state and drives the water flow to pass through the water pump 440 from bottom to top, i.e. the water in the water storage tank 420 can be sucked in from the first end of the circulation pipe 430 and then sent back to the water storage tank 420 from the second end, thereby forming a circulating water flow.

[0216] When the control valve 450 is closed, as shown in Figure 8 , the water pump 440 executes the second working state and drives the water flow to flow from the second water port to the first water port, i.e. to pass through the water pump 440 from top to bottom. Since the connection between the first water port of the water pump 440 and the water storage tank 420 is cut off by the control valve 450 at this time, the water flow can only flow to the water inlet pipe 460, thereby injecting water into the inner cylinder 720 along the water inlet pipe 460.

[0217] In one specific structure of the embodiment, the circulating pipe 430 is arranged outside the water storage tank 420, and the water storage tank 420 is provided with a circulating water inlet and a circulating water outlet, wherein the first end of the circulating pipe 430 is connected to the circulating water outlet, and the second end of the circulating pipe 430 is connected to the circulating water inlet.

[0218] As a specific implementation, the control valve 450 is arranged on the circulating pipe 430, and the opening and closing of the control valve 450 can conduct or cut off the circulating pipe 430.

[0219] As another specific implementation, the control valve is arranged at the circulating water outlet of the water storage tank, and the opening and closing of the control valve can open or block the circulating water outlet.

[0220] In the above scheme, the specific connection position and manner of the circulating pipe 430 and the water storage tank 420 can refer to any scheme in Embodiments One and Two, which will not be described here.

[0221] In another specific structure of the embodiment, the circulating pipe and the water pump are integrally arranged inside the water storage tank, and the water inlet pipe is sealingly arranged through the tank wall of the water storage tank, so that the inlet end of the water inlet pipe is connected to the circulating pipe.

[0222] Further, as shown in Figs. 5 and 6, the heating device 500 and the temperature detector 510 are arranged on the circulating pipe 430. In one specific implementation, the heating device 500 and the temperature detector 510 can be arranged between the water pump 440 and the control valve 450. Figure 7 Figure 8 In another structure, the heating device and the temperature detector can also be installed on the tank wall of the water storage tank.

[0223] In another structure, the heating device and the temperature detector can also be installed on the tank wall of the water storage tank.

[0224] The washing device provided by the embodiment adopts the following control method:

[0225] The control valve 450 is opened, the water pump 440 is started in forward rotation, the water flow is driven to enter the water storage tank 420 from the second end of the circulating pipe 430, and the water in the water storage tank 420 is caused to form a circulating flow along the circulating pipe 430;

[0226] The control valve 450 is closed, the water pump 440 is started in reverse rotation, the water in the water storage tank 420 is driven to enter the circulating pipe 430 from the second end of the circulating pipe 430, and flows to the water inlet pipe 460, and finally is injected into the inner drum 720 along the water inlet pipe 460.

[0227] In the embodiment, the control valve 450 is in a default open state, and is closed only when water is injected into the inner drum 720.

[0228] ​In a further scheme, the washing apparatus injects water into the water storage tank 420 to reach a preset water injection amount in the last rinse stage of the washing procedure. After the washing apparatus completes the running of the current washing procedure and is powered off, the control valve 450 remains open when the washing apparatus is powered on again before the washing procedure is started. The heating device 500 is started, and the water pump 440 is started in the forward direction to circulate and heat the water in the water storage tank 420. After the washing procedure is started, the control valve 450 remains open, and the heating device 500 and the water pump 440 continue to run. When the water in the water storage tank 420 reaches a set temperature, the control valve 450 is closed, and the water pump 440 is controlled to run in the reverse direction to inject the water in the water storage tank 420 into the inner tub 720 through the water inlet pipe 460.

[0229] In the above scheme, the specific meanings of the "preset water injection amount" and the "set temperature" are the same as those in Embodiment Four.

[0230] In a further scheme, the washing apparatus starts to supplement water into the water storage tank 420 after the washing procedure is started. At the same time, the washing apparatus obtains the amount of laundry in the inner tub 720, determines the water consumption of the washing stage according to the amount of laundry, supplements water into the water storage tank 420 to reach a water level corresponding to the water consumption, and then injects the water heated to the set temperature into the inner tub 720.

[0231] As a specific implementation, after the washing apparatus receives the starting instruction of the washing procedure and detects that the machine door 200 is closed, the water inlet valve 810 is opened to inject tap water to flush the dispenser box of the detergent dispenser 830, and the detergent is injected into the water storage tank 420 together with the tap water and heated together with the water already in the water storage tank 420. At the same time that the water inlet valve 810 is opened, the weighing system of the washing apparatus obtains the amount of laundry in the inner tub 720 by weighing.

[0232] After the weighing is completed, the water consumption of the washing stage is determined according to the obtained amount of laundry, and the water inlet valve 810 remains open to continue to supplement water into the water storage tank 420. When the water storage tank 420 reaches a water level corresponding to the water consumption of the washing stage, the water inlet valve 810 is closed.

[0233] During the process of supplementing water into the water storage tank 420 and after the supplementing of water is completed, the heating device 500 and the water pump 440 remain in the running state to continue heating and fully dissolve and mix the detergent by using the circulation process. When the water in the water storage tank 420 reaches the set temperature, the control valve 450 is closed, and the water pump 440 is controlled to run in the reverse direction to inject the mixed liquid containing the fully dissolved and mixed detergent into the inner tub 720.

[0234] In further aspects of the embodiment, during the washing stage and / or the intermediate rinsing stage of the washing program, the washing machine fills the water storage tank 420 with water, the amount of water being the amount of water required for the next rinsing stage. When the water is filled for the next rinsing stage, the control valve 450 is closed and the water pump 440 is reversed to inject the water in the water storage tank 420 into the inner tub 720 through the water inlet pipe 460.

[0235] As a specific embodiment, during the washing stage, the washing machine opens the water inlet valve 810 to continuously fill the water storage tank 420 with water until the water level in the water storage tank 420 reaches a water level corresponding to the amount of water required for the next rinsing stage, and then closes the water inlet valve 810. After the washing stage, the washing machine performs the main washing and dewatering, and in particular, at the beginning of the main washing dewatering, the vibration amplitude is the largest. Since a large amount of water has been stored in the water storage tank 420, the mass of the components connected to the outer tub 710 is increased, and the dewatering vibration can be greatly reduced.

[0236] After the main washing dewatering, the control valve 450 is closed and the water pump 440 is reversed to quickly inject the water in the water storage tank 420 into the inner tub 720. Since the process of injecting water into the inner tub 720 is driven by the water pump 440, the water injection speed is much greater than the water inlet speed of tap water, and the time required for the water inlet operation is shortened, thereby further reducing the overall washing time.

[0237] Similarly, during each intermediate rinsing stage, the washing machine opens the water inlet valve 810 to continuously fill the water storage tank 420 with water until the water level in the water storage tank 420 reaches a water level corresponding to the amount of water required for the next rinsing stage, and then closes the water inlet valve 810. After the current intermediate rinsing stage, the washing machine performs the intermediate rinsing and dewatering, and at this time, the water stored in the water storage tank 420 is beneficial to reduce the vibration amplitude of the outer tub 710 during the dewatering process. After the intermediate rinsing dewatering, the control valve 450 is closed and the water pump 440 is reversed to inject the water in the water storage tank 420 into the inner tub 720, and the next rinsing can be started.

[0238] In the embodiment, the cut-off valve is used as the control valve 450, and the water pump 440 that can operate in two directions is used in cooperation. When the washing machine is working, the opening and closing state of the control valve 450 and the operating direction of the water pump 440 are matched with each other, so as to switch between the water flow circulation and the water injection into the inner tub 720.

[0239] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any skilled person in the art can make some changes or modifications to the above-mentioned technical content with the above-mentioned prompt as equivalent embodiments with equivalent changes, but as long as it does not deviate from the technical solution of the present application, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application are still within the scope of the present application.

Claims

1. A washing apparatus characterized by comprising: The washing device comprises: an outer cylinder; an inner cylinder rotatably arranged inside the outer cylinder and capable of containing water independently during washing; a water storage tank arranged below the outer cylinder and capable of containing water independently from the outer cylinder; a circulation pipe in communication with the water storage tank, wherein a water pump is arranged on the circulation pipe; a water inlet pipe, with an inlet end in communication with the circulation pipe and an outlet end in communication with the inner cylinder; a control valve for switching the water pump to execute a first working state or a second working state; when the water pump executes the first working state, water in the water storage tank is driven to enter the circulation pipe and then return to the water storage tank along the circulation pipe, forming a circulation; when the water pump executes the second working state, water in the water storage tank is driven to enter the water inlet pipe along the circulation pipe and then enter the inner cylinder along the water inlet pipe.

2. The washing apparatus according to claim 1, characterized by The control valve is arranged on the circulation pipe; or the water storage tank has a water inlet, and the outlet end of the circulation pipe is connected to the water inlet, and the control valve is arranged at the water inlet of the water tank. The water pump is arranged between the inlet end of the circulation pipe and the control valve. The inlet end of the water inlet pipe is connected between the water pump and the control valve, and the water inlet pipe is at least partially higher than the top of the water storage tank. When the control valve is open, the water pump executes the first working state. When the control valve is closed, the water pump executes the second working state.

3. The washing apparatus according to claim 1, wherein The control valve is a three-way switching valve, the inlet of the three-way switching valve is in communication with the water outlet end of the water pump, the first outlet of the three-way switching valve is in communication with the water storage tank, and the second outlet is in communication with the water inlet pipe. When the control valve is in communication with the water outlet end of the water pump and the water storage tank, the water pump executes the first working state. When the control valve is in communication with the water outlet end of the water pump and the water inlet pipe, the water pump executes the second working state.

4. The washing apparatus according to claim 1, wherein The control valve is arranged on the circulation pipe; or the water storage tank has a circulation water outlet, the first end of the circulation pipe is connected to the circulation water outlet, and the control valve is arranged at the circulation water outlet of the water tank. The water pump is a bidirectional pump arranged between the second end of the circulation pipe and the control valve. The inlet end of the water inlet pipe is connected between the water pump and the control valve. When the control valve is open, the water pump executes the first working state, and water flow is driven to enter the water storage tank from the second end of the circulation pipe. When the control valve is closed, the water pump executes the second working state, and water in the water storage tank is driven to enter the circulation pipe from the second end of the circulation pipe.

5. The washing apparatus according to any one of claims 1 to 4, characterized by, The water storage tank and the outer cylinder are integrally formed and connected to the bottom of the outer cylinder; or the water storage tank and the outer cylinder are separate parts and the water storage tank is mounted at the bottom of the outer cylinder. And / or, a heating device is further arranged on the circulation pipe or in the water storage tank. Preferably, a temperature detector is further arranged on the circulation pipe or in the water storage tank.

6. The washing apparatus according to any one of claims 1 to 4, characterized by, The water storage tank is connected to a water injection pipe for injecting water into the water storage tank through the water injection pipe; the water injection pipe is connected to the area near the top of the circumferential wall of the water storage tank. Preferably, the washing device has a detergent dispenser, and the inlet end of the water injection pipe is connected to the detergent dispenser.

7. A control method of a washing apparatus according to any one of claims 1 to 6, characterized in that, The control valve switches the water pump to execute the first working state, starts the water pump, and drives water in the water storage tank to flow along the circulation pipe; The control valve switches the water pump to execute the second working state, starts the water pump, and drives water in the water storage tank to enter the inner cylinder along the water inlet pipe.

8. The control method of a washing apparatus according to claim 7, characterized by, The washing device is provided with a heating device for heating water in the water storage tank; In the last rinsing stage of the washing program, the washing device injects water into the water storage tank to reach a preset injection amount; After the washing device is started again, before the washing program is started, the control valve switches the water pump to execute the first working state, starts the heating device and the water pump, and performs cyclic heating of the water in the water storage tank; After the washing program is started, when the water in the water storage tank reaches a set temperature, the control valve switches the water pump to execute the second working state, and the water pump operates to inject the water in the water storage tank into the inner drum along the water inlet pipe. 9.The control method of a washing apparatus according to claim 8, characterized in that, After the washing program is started, water is supplemented into the water storage tank; the washing device obtains the amount of laundry in the inner drum, determines the water consumption of the washing stage according to the amount of laundry, supplements water into the water storage tank to a water level corresponding to the water consumption, and then injects water heated to the set temperature into the inner drum.

10. The control method of a washing apparatus according to any one of claims 7 to 9, characterized by, In the washing stage and / or intermediate rinsing stage of the washing program, the washing device injects water into the water storage tank, and the injection amount is the water consumption of the next rinsing stage; When water is injected in the next rinsing stage, the control valve switches the water pump to execute the second working state, and starts the water pump to inject the water in the water storage tank into the inner drum along the water inlet pipe.

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