A washing water recycling system for a multi-tub washing machine and a multi-tub washing machine

Abstract

The present invention provides a washing water recycling system for a multi-tub washing machine, which comprises a plurality of washing tubs, a water collecting chamber and a water distribution device, wherein: each of the plurality of washing tubs is provided with a return water outlet pipe and a return water inlet pipe; the return water outlet pipe of each washing tub is connected to the water inlet end of the water collecting chamber; the water outlet end of the water collecting chamber is connected to the return water inlet pipes of the plurality of washing tubs; the water distribution device enables the water collecting chamber to be controlled to receive the circulating return water of any washing tub through connection with the return water outlet pipes of the plurality of washing tubs; and can be controlled to supply the circulating return water to any washing tub through connection with the return water inlet pipes of the plurality of washing tubs. It not only solves the problem that the relatively clean rinsing water cannot be reused at present, but also solves the problem that different washing chambers need to pause for a long time during the process of discharging sewage and inletting water, thus prolonging the time for the washing machine to wash clothes. At the same time, it can also play a role in heating the washing water.

Description

Technical Field

[0001] The present invention relates to the technical field of washing devices, and particularly relates to a washing water recycling system and a multi-tub washing machine for a multi-tub washing machine. Background Art

[0002] With the improvement of people's living standards, washing machines have become one of the commonly used household appliances in people's lives. Healthy washing has become an important need for people, and the pursuit of healthy washing has become a consensus. The multi-tub washing machine is one of the important forms of healthy washing. The benefits of multi-tub washing not only avoid cross-infection but also avoid color bleeding of clothes. Washing clothes separately requires a large amount of water. It has become an urgent problem to be able to reuse the rinsing water and reuse the relatively clean rinsing water. Summary of the Invention

[0003] The purpose of the present invention is to provide a washing water recycling system and a multi-tub washing machine for a multi-tub washing machine, which not only solve the problem that the relatively clean rinsing water cannot be reused at present, but also solve the problem that different washing chambers need to pause for a long time during the process of discharging sewage and inlet water, thus prolonging the washing time of the washing machine for clothes. At the same time, it can also play a role in heating the washing water.

[0004] To achieve the above object, the present invention adopts the following technical solutions: A washing water recycling system for a multi-tub washing machine includes a plurality of washing tubs, a water collecting chamber, and a water distribution device, wherein: Each of the plurality of washing tubs is provided with a return water outlet pipe and a return water inlet pipe; The return water outlet pipe of each washing tub is connected to the water inlet end of the water collecting chamber; The water outlet end of the water collecting chamber is connected to the return water inlet pipes of the plurality of washing tubs; The water distribution device enables the water collecting chamber to be controlled to be connected to the return water outlet pipe of any one of the plurality of washing tubs to receive the circulating return water of any washing tub; It can be controlled to be connected to the return water inlet pipe of any one of the plurality of washing tubs to provide circulating return water to any washing tub; It can realize the circulation of washing water in the washing tub, complete the recovery, storage and reuse of washing water, make full use of water resources, and save resources.

[0005] Further optionally, the water distribution device is a multi-way valve. The multi-way valve is provided with an inlet and a plurality of outlets. The water collecting chamber is provided with a total return water outlet pipe. The inlet of the multi-way valve is connected to the total return water outlet pipe of the water collecting chamber. The plurality of outlets of the multi-way valve are respectively connected to the return water inlet pipes of the plurality of washing tubs in one-to-one correspondence; The multi-way valve can be controlled to provide circulating return water to any washing tub.

[0006] Further optionally, the multi-way valve is a rotary multi-way valve, which includes: a long cylindrical housing, a valve core rotatably arranged in the housing along the axial direction of the long cylinder of the housing, and a driving assembly arranged on one side of the valve core to drive the valve core to rotate in the housing; wherein, a housing liquid inlet is provided on the upper circumferential surface of the housing, and a plurality of housing liquid outlets are provided on the lower circumferential surface; a plurality of valve core liquid inlets for communicating with the housing liquid inlet and a plurality of valve core liquid outlets for communicating with the plurality of housing liquid outlets are formed on the outer circumferential surface of the valve core; the plurality of valve core liquid inlets and the plurality of valve core liquid outlets correspond to each other one by one and form independent flow channels; when the valve core is driven by the driving assembly to rotate to different preset angles, an inlet and an outlet of a flow channel in the valve core are correspondingly connected with the housing liquid inlet and the housing liquid outlet according to a preset rule.

[0007] Further optionally, the water distribution device is a water distribution chamber, the water distribution chamber is provided with an inlet and a plurality of outlets, the water collection chamber is provided with a total return water outlet pipe, the inlet of the water distribution chamber is connected to the total return water outlet pipe of the water collection chamber, and the plurality of outlets of the water distribution chamber are correspondingly connected to the inlets of the return water inlet pipes of a plurality of washing tubs one by one; the water distribution chamber can be controlled to supply circulating return water to any washing tub.

[0008] Further optionally, the plurality of outlets of the water distribution chamber are located on the inner side surface of the bottom surface of the water distribution chamber, a selection plate and a driving motor 76 for driving the selection plate are covered on the plurality of outlets, a through hole is provided on the selection plate, and by driving the motor to rotate the selection plate, the through hole on it can be communicated with any one of the plurality of outlets; by controlling the driving motor, the selection plate is rotated so that the through hole on it cooperates with any one of the plurality of outlets covered by it, so as to achieve the purpose of controlling the water inlet of any washing tub.

[0009] Further optionally, a control valve is provided on the return water inlet pipe of each washing tub of the water distribution device, and the control valve can be controlled to supply circulating return water to its corresponding washing tub.

[0010] Further optionally, a total return water inlet pipe is connected to the water collection chamber, the total return water inlet pipe of the water collection chamber is connected to the return water outlet pipe of each washing tub, so that the circulating return water outlet in each washing tub can be controlled to flow into the water collection chamber; a circulation pump is arranged on the total return water outlet pipe of the water collection chamber to provide power for the return water in the water collection chamber to be controlled to enter any washing tub.

[0011] Further optionally, the plurality of washing tubs include a first, a second, and a third washing tub, which are arranged in descending order from top to bottom. The return water outlet pipe of the third washing tub is connected to the water inlet end of a three-way valve. One water outlet end of the three-way valve is connected to the total return water inlet pipe of the water collection chamber, and the other end is connected to the drain pipe; this realizes the program of simultaneous drainage and water inlet between different washing tubs, saving time and improving the user experience.

[0012] Further optionally, a heating device and / or a filtering device and / or a sterilization and disinfection device are provided in the water collection chamber; this is equivalent to the washing tubs of a multi-tub washing machine sharing the same heating device, which can save heating components and optimize the hardware circuit design; it makes the water collection chamber integrate multiple functions, simplifies the structural design of the washing machine while meeting the various needs of users.

[0013] The present invention also provides a multi-tub washing machine, which is provided with the multi-tub washing machine washing water recycling system described in any one of the above.

[0014] The multi-tub washing machine washing water recycling system provided by the present invention and the washing machine having the same can realize the recycling of the washing water of the multi-tub washing machine. The water collection chamber can collect the washing water of multiple washing tubs, such as the first, second, and third washing tubs. The water in the water collection chamber is recycled through the control of a pump and a valve or a water distribution chamber; at the same time, it can realize the simultaneous water inlet and drainage processes of different washing chambers. For example, the first washing tub can inlet water through a circulating water tank while the second washing tub discharges sewage, saving time and improving the user experience; the setting of the heating device can heat the washing water, and the heating device is arranged in the water collection chamber, which is equivalent to multiple washing tubs sharing one heating device, saving circuit design and reducing the working load of other heating devices in the multi-tub washing machine at the same time. Description of the Drawings

[0015] By referring to the accompanying drawings and describing its exemplary embodiments in detail, the above and other objects, features, and advantages of the present disclosure will become more apparent. The following described drawings are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 Schematic diagram of the multi-tub washing machine washing water recycling system in an embodiment of the present invention;

[0017] Figure 2 Schematic diagram of the multi-tub washing machine washing water recycling system in an embodiment of the present invention;

[0018] Figure 3 Schematic diagram of the multi-tub washing machine washing water recycling system in an embodiment of the present invention;

[0019] Figure 4Schematic diagram of the independent water distribution chamber structure of a multi-tub washing machine in an embodiment of the present invention;

[0020] Figure 5 Is an exploded view of a multi-way valve in an embodiment of the present invention;

[0021] Figure 6 Is an overall schematic diagram of the assembled multi-way valve in an embodiment of the present invention;

[0022] Figure 7 Is a schematic sectional view of the third flow channel connection after the multi-way valve is assembled in an embodiment of the present invention;

[0023] Figure 8 Is a schematic sectional view of the first flow channel connection after the multi-way valve is assembled in an embodiment of the present invention;

[0024] Figure 9 Is a schematic sectional view of the second flow channel connection after the multi-way valve is assembled in an embodiment of the present invention.

[0025] In the figure:

[0026] 1 - First washing tub; 11 - First return water inlet pipe; 12 - First return water outlet pipe; 2 - Second washing tub; 21 - Second return water inlet pipe; 22 - Second return water outlet pipe; 3 - Third washing tub; 31 - Third return water inlet pipe; 32 - Third return water outlet pipe; 33 - Three-way valve; 4 - Water collection chamber; 41 - Total return water outlet pipe; 42 - Heating device; 43 - Radar liquid level detection device; 44 - Steel needle liquid level detection device; 45 - Water temperature detection device; 46 - Circulation pump; 5 - Drain pipe; 6 - Multi-way valve; 61 - Housing; 611 - Housing liquid inlet; 612 - First housing liquid outlet; 613 - Second housing liquid outlet; 614 - Third housing liquid outlet; 615 - Bottom of the tub; 616 - Positioning support groove; 62 - Valve core; 621 - First notch; 622 - Second notch; 623 - First flow channel; 624 - Second flow channel; 625 - Third flow channel; 626 - Positioning column; 627 - First through hole A; 628 - First through hole B; 629 - Second through hole A; 6200 - Second through hole B; 6201 - Third through hole A; 6202 - Third through hole B; 6203 - First sealing ring support bridge; 6204 - Second sealing ring support bridge; 63 - Driving assembly; 64 - Sealing ring; 65 - Sealing gasket; 7 - Water distribution chamber; 71 - Water distribution chamber water inlet; 72 - First water outlet; 73 - Second water outlet; 74 - Third water outlet; 75 - Selecting plate; 76 - Driving motor; 81 - First control valve; 82 - Second control valve; 83 - Third control valve Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. "Plural" generally includes at least two, but does not exclude the case of including at least one.

[0029] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such commodity or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the commodity or system including the said element.

[0030] In the prior art, washing clothes by category requires a large amount of water. Reusing the rinsing water and reusing the relatively clean rinsing water have become problems to be solved urgently. At the same time, when multiple washing barrels of a multi-tub washing machine are working, the sewage discharge program of a certain washing barrel needs to be completed first before the water inlet program of another washing barrel can start, thus prolonging the time for the washing machine to wash clothes.

[0031] The present invention provides a washing water recycling system for a multi-tub washing machine and a washing machine having the same, which solves the above problems and can also heat the washing water in multiple washing barrels, reducing the working load of other heating devices of the multi-tub washing machine and saving costs.

[0032] Embodiment 1

[0033] As Figures 1-4As shown in the figure, this embodiment provides a multi-barrel washing machine, which has a washing water circulation utilization system for a multi-barrel washing machine, including a plurality of washing barrels, a water collection chamber 4, and a water distribution device. The number of washing barrels of the multi-barrel washing machine is greater than or equal to two. Preferably, the multi-barrel washing machine in this embodiment includes three washing barrels, namely the first, second, and third washing barrels 3. The first, second, and third washing barrels 3 are arranged in order from high to low. Each washing barrel is provided with a return water outlet pipe and a return water inlet pipe. That is, the first washing barrel 1 is provided with a first return water inlet pipe 11 and a first return water outlet pipe 12; the second washing barrel 2 is provided with a second return water inlet pipe 21 and a second return water outlet pipe 22; the third washing barrel 3 is provided with a third return water inlet pipe 31 and a third return water outlet pipe 32. The return water outlet pipe of each washing barrel is connected to the water inlet end of the water collection chamber 4. That is, the first return water outlet pipe 12, the second return water outlet pipe 22, and the third return water outlet pipe 32 are respectively connected to the water inlet end of the water collection chamber 4; the water outlet end of the water collection chamber 4 is connected to the first return water inlet pipe 11 of the first washing barrel 1, the second return water inlet pipe 21 of the second washing barrel 2, and the third return water inlet pipe 31 of the third washing barrel 3;

[0034] The washing water circulation utilization system of the three-barrel washing machine in this embodiment further includes a water distribution device, so that the water collection chamber 4 can be controlled to be connected to the return water outlet pipes of any three washing barrels, that is, the first return water outlet pipe 12, the second return water outlet pipe 22, and the third return water outlet pipe 32, to receive the circulating return water of any three washing barrels; it can be controlled to provide circulating return water to any three washing barrels by connecting to the return water inlet pipes of a plurality of washing barrels, that is, the first return water inlet pipe 11, the second return water inlet pipe 21, and the third return water inlet pipe 31;

[0035] Preferably, a total return water inlet pipe is connected to the water collection chamber 4, and the total return water inlet pipe of the water collection chamber 4 is connected to the return water outlet pipe of each washing barrel. That is, the total return water inlet pipe of the water collection chamber 4 is connected to the first return water outlet pipe 12, the second return water outlet pipe 22, and the third return water outlet pipe 32, so that the circulating return water of each washing barrel can be controlled to flow into the water collection chamber 4. Preferably, a circulation pump 46 is provided on the total return water outlet pipe 41 of the water collection chamber 4 to provide power for the return water of the water collection chamber 4 to be controlled to enter any washing barrel. Further preferably, the water outlet end of the water collection chamber 4 is connected to the drain pipe 5 of the multi-barrel washing machine, and the return water in the water collection chamber 4 can be discharged from the multi-barrel washing machine. Further preferably, the third return water outlet pipe 32 of the third washing barrel is connected to the water inlet end of a three-way valve 33. One water outlet end of the three-way valve 33 is connected to the total return water inlet pipe of the water collection chamber 4, and the other end is connected to the drain pipe 5. Preferably, a heating device 42 is provided in the water collection chamber 4; further preferably, the water heating device 42 is a heating wire. Further preferably, such as Figure 4, on the upper inner wall of the water collection chamber 4, there is a radar liquid level detection device 43 for real-time monitoring of the water capacity in the water collection chamber 4 to prevent water overflow from damaging the washing tub; above the water heating wire, there is a steel needle liquid level detection device 44 to avoid damage to the machine caused by dry heating when the water heating wire is not submerged in water; in the water collection chamber 4, there is also a water temperature detection device 45 for real-time monitoring of the washing water temperature to prevent damage to the clothes due to overheated washing water. Preferably, in the water collection chamber 4, there is also a filtering device and / or a sterilization and disinfection device.

[0036] When the multi-tub washing machine is working, the rinsing water of the first washing tub 1 can be used as relatively clean water for washing in the second and third washing tubs 3. After the rinsing program of the first washing tub 1 ends, the rinsing water does not drain out of the multi-tub washing machine through the drain pipe 5, but flows into the water collection chamber 4 through the first return water outlet pipe 12 at the water inlet end of the water collection chamber 4 for storage. And the radar liquid level detection device 43 in the water collection chamber 4 real-time monitors the water capacity in the water collection chamber 4 to prevent water overflow from damaging the washing tub; when the second washing tub 2 and / or the third washing tub 3 need to start the washing work, they do not need to take in water from the outside of the washing machine. First, the relatively clean rinsing water stored in the water collection chamber 4 can be used as the washing water. At the same time, the filtering device and / or the sterilization and disinfection device in the water collection chamber 4 can first treat the rinsing water. When the second washing tub 2 and / or the third washing tub need hot water as the washing water, the water heating device 42 in the water collection chamber works. And before it works, the steel needle liquid level detection device 44 set above it prevents dry heating due to the water heating wire not being submerged in water. When the temperature detected by the water temperature detection device 45 in the water collection chamber 4 meets the requirements of the second washing tub 2 and / or the third washing tub 3, the heater stops working; the circulation pump 46 on the total return water outlet pipe 41 of the water collection chamber 4 sends the treated rinsing water to the water distribution device. Through the control of the water distribution device, the treated rinsing water is distributed into the second return water inlet pipe 21 and / or the third return water inlet pipe 31 and flows into the second washing tub 2 and / or the third washing tub 3.

[0037] When the first washing tub 1 starts to work and needs to draw water from outside the multi-tub washing machine, and the second washing tub 2 and the third washing tub 3 need to drain water, the water inlet and drainage procedures can be carried out simultaneously. The first washing tub 1 normally draws water through the water inlet pipeline of the multi-tub washing machine. The sewage in the second washing tub 2 enters the water collection chamber 4 through the water inlet end of the second return water outlet pipe 22, and then flows into the drain pipe 5 of the washing machine through the water outlet end of the water collection chamber 4 and is discharged from the washing machine; the third washing tub 3 can drain water in the same water circulation mode as the second washing tub 2, that is, also control the water inlet end of the three-way valve 33 provided on the third return water outlet pipe 32, open the waterway between the third return water outlet pipe 32 and the total return water inlet pipeline, and drain the sewage in the same way as the second washing tub 2 discharges sewage. However, this program is not the optimal solution for the waterway design; preferably, the sewage drainage method of the third washing is to control the water inlet end of the three-way valve 33 provided on its return water outlet pipe, open the waterway between the third return water outlet pipe 32 and the drain pipe 5 of the washing machine, and directly discharge the sewage in the third washing tub from the washing machine. Considering the simplification of the program, the sewage drainage method of the third washing tub 3 is preferably the second one.

[0038] The multi-tub washing machine provided in this embodiment has a washing water circulation and utilization system that can realize the circulation of washing water in the washing tub, complete the recycling, storage and reuse of washing water, make full use of water resources and save resources.

[0039] Moreover, the design of the water collection chamber in this system integrates multiple functions into one. It can not only save heating devices, optimize the hardware circuit design, reduce the heating time, improve the washing efficiency, but also simplify the structural design of the washing machine while meeting the various needs of users, and improve the user experience.

[0040] Embodiment 2

[0041] As Figure 1, as shown in FIGS. 5-9, based on the embodiment, this embodiment provides a multi-tub washing machine with three washing tubs, and its water distribution device is a multi-way valve 6. Other designs are the same as those in Embodiment 1; the multi-way valve 6 is provided with an inlet and multiple outlets. The water collection chamber 4 is provided with a main return water outlet pipe 41. The inlet of the multi-way valve 6 is connected to the main return water outlet pipe 41 of the water collection chamber 4, and the multiple outlets of the multi-way valve 6 are respectively and correspondingly connected to the return water inlet pipes of the multiple washing tubs; the multi-way valve 6 can be controlled to supply circulating return water to any washing tub. Preferably, the multi-way valve 6 is a rotary multi-way valve 6, which includes: a long cylindrical housing, a valve core rotatably arranged in the housing along the axial direction of the long cylinder of the housing, and a driving assembly arranged on one side of the valve core to drive the valve core to rotate in the housing; wherein, an inlet of the housing is provided on the upper circumferential surface of the housing, and multiple outlets of the housing are provided on the lower circumferential surface; multiple inlet ports of the valve core are formed on the outer circumferential surface of the valve core for communicating with the inlet of the housing, and multiple outlet ports of the valve core for communicating with the multiple outlets of the housing are formed; the multiple inlet ports of the valve core correspond to the multiple outlet ports one by one and form independent flow channels; when the valve core is driven by the driving assembly to rotate to different preset angles, the inlet and outlet of a flow channel in the valve core are correspondingly connected and communicated with the inlet of the housing and the outlets of the housing according to a preset rule. Further preferably, the multi-way valve 6 is a rotary four-way valve

[0042] As Figures 5-9 shown in the figure, the present invention discloses a rotary four-way valve, including: a housing 61, a valve core 62 and a driving assembly 63. The housing 61 adopts a long cylindrical structure; the valve core 62 is rotatably arranged in the housing 61 along the axial direction of the long cylinder of the housing, and the valve core adopts a columnar structure; the driving assembly 63 is arranged on one side of the valve core to drive the valve core 62 to rotate in the housing 61.

[0043] To realize the cooperative connection between the housing 61 and the valve core 62. An inlet of the housing 61 is provided on the upper circumferential surface of the housing 61, which is connected to the main return water outlet pipe 41 of the water collection chamber 4, and multiple outlets of the housing are provided on the lower circumferential surface (the upper circumferential surface and the lower circumferential surface are relatively arranged, only for facilitating the description of the relative relationship between the inlet of the housing 61 and the outlets of the housing).

[0044] Correspondingly, multiple inlet ports of the valve core 62 are formed on the outer circumferential surface of the valve core for communicating with the inlet of the housing 61; at the same time, multiple outlet ports of the valve core for communicating with the multiple outlets of the housing are also formed. The multiple inlet ports of the valve core correspond to the multiple outlet ports one by one. A flow channel is formed between the inlet port and the outlet port of the valve core in each group, and the flow channels between the groups are independent of each other. The flow channels are not connected to each other, and only the corresponding inlet port and outlet port of the valve core are connected.

[0045] Since the valve core 62 is rotatably arranged in the housing 61, when the valve core 62 is driven by the driving component 63 to rotate to different preset angles, an inlet and an outlet of a flow channel in the corresponding valve core will be correspondingly connected and communicated with the housing inlet 611 and the housing outlet according to a preset rule. The preset rule means that at any preset angle, an independent flow channel will be correspondingly provided on the valve core. The inlet of the flow channel is connected to the inlet of the housing, and the outlet of the flow channel is connected to the outlet of the housing. This connection method realizes independent connection. At this time, no other flow channels will be connected to the inlet of the housing.

[0046] In some optional implementation manners, a housing inlet 611 is provided on the upper circumferential surface of the housing 61, and three housing outlets are provided on the lower circumferential surface. The three housing outlets are, in order from left to right, the first housing outlet 612, the second housing outlet 613, and the third housing outlet 614. Specifically, the flow channels in the valve core 62 include a first flow channel 623, a second flow channel 624, and a third flow channel 625. The first flow channel, the second flow channel, and the third flow channel are not in the same plane. Among them: the first flow channel forms a first through hole A627 and a first through hole B628 on the circumferential surface of the valve core; the second flow channel forms a second through hole A629 and a second through hole B6200 on the circumferential surface of the valve core; the third flow channel forms a third through hole A6201 and a third through hole B6202 on the circumferential surface of the valve core.

[0047] The valve core forms a first notch 621 between the position where the first through hole A627 corresponds to the housing inlet 611, and forms a second notch 622 between the position where the second through hole A629 corresponds to the housing inlet 611. To ensure that the flow channels are not connected to each other, the first notch 621 and the second notch 622 can be misaligned so that they are not connected to the housing inlet 611 at the same time. At this time, the third through hole A6201 is also misaligned with the first notch 621 and the second notch 622 to form a non-connection.

[0048] Since the valve core 62 is arranged inside the housing 61 and can be rotated to a preset angle, that is: when the first through hole A627 is connected to the housing inlet 611 through the first notch, the first through hole B628 is connected to the first housing outlet 612; when the second through hole A629 is connected to the housing inlet 611 through the second notch 622, the second through hole B6201 is connected to the third housing outlet 614; when the third through hole A6201 is connected to the housing inlet 611, the third through hole B6202 is connected to the second housing outlet 613.

[0049] In some implementations, the first flow channel 623, the second flow channel 624, and the third flow channel 625 are all opened along the radial direction of the valve core. In this case, the radial directions corresponding to each of the opened flow channels may be different. Arranging the flow channels in the radial direction can make the valve core structure more regular, avoid uneven thickness on both sides of the valve core flow channel due to the offset flow channel, and prevent damage due to wear after long-term use. This structure increases the service life of the valve core.

[0050] In order to enhance the sealing performance between the flow channels of the valve core, a sealing ring 64 is also provided on the valve core of the multi-way valve 6. Specifically, the sealing ring 64 also includes: a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring. The first sealing ring is sleeved on the valve core 62 and is located at an end away from the drive assembly 63; the second sealing ring is sleeved on the valve core 62 and is located between the first flow channel 623 and the third flow channel 625; the third sealing ring is sleeved on the valve core 62 and is located between the second flow channel 624 and the third flow channel 625; the fourth sealing ring is sleeved on the valve core 62 and is located at an end close to the drive assembly 63. The three flow channels are isolated by four sealing rings, thereby avoiding the situation where water flows into each other due to poor sealing performance between the housing and the valve core.

[0051] Preferably, a first sealing ring support bridge 6203 is provided on the first notch 621, and a second sealing ring support bridge 6204 is provided on the second notch 622. Since the sealing ring 64 is mostly made of a relatively soft material, such as rubber, it has a certain degree of deformation, and the sealing rings on the left and right sides can be supported respectively by the two sealing ring support bridges, thereby avoiding the sealing ring being deformed due to stress, which leads to the inability to seal the gap between the valve core and the housing well, resulting in poor sealing effect.

[0052] In order to improve automation and reduce manpower to achieve automatic control, the drive assembly includes a motor that can drive the valve core to rotate to a preset angle in the housing to form different passages. A sealing gasket is provided between the motor and the valve core to prevent water from overflowing the three-way valve 33 or even burning the motor. Preferably, a barrel bottom 615 is provided at one end of the housing away from the drive assembly 63. In some implementations, a positioning support groove 616 is provided on the inner side of the barrel bottom 615, and a positioning column 626 is provided at the axis of one end of the valve core 62 close to the barrel bottom 615, and the positioning column 626 is assembled in the positioning support groove 616. Through the cooperation of the positioning support groove and the positioning column, the valve core 62 can be limited and supported, and the rotation of the valve core in the housing is facilitated, and rolling parts such as bearings can be provided in the positioning support groove to reduce friction between components. Preferably, the first flow channel 623 and the second flow channel 624 are opened on the same plane, and the first notch 621 and the second notch 622 are symmetrically opened on both sides of the valve core. The opening direction of the first flow channel 623 and the opening direction of the third flow channel 625 are at 90 degrees.

[0053] In this embodiment, the rotary multi-way valve ingeniously utilizes the flow channels and special notches formed inside the valve core to form three different open states with the inlet and outlet of the housing: (1) When the motor is powered off, the third flow channel is in an open state; (2) When the motor rotates forward 90° when powered on, the first flow channel is in an open state; (3) When the motor rotates backward 90° when powered on, the second flow channel is in an open state. Among them, the first flow channel is connected to the first return water inlet pipe of the first washing tub, the second flow channel is connected to the second return water inlet pipe of the second washing tub, and the third flow channel is connected to the third return water inlet pipe of the third washing tub. By controlling the open states of different flow channels, the supply of circulating return water to the corresponding washing tub is controlled.

[0054] Embodiment 3

[0055] As Figure 2 shown, based on Embodiment 1, this embodiment provides a multi-tub washing machine with three washing tubs. Its water distribution device is a water distribution chamber 7, and other designs are the same as those in Embodiment 1. Among them, the water distribution chamber 7 is provided with an inlet, namely the water distribution chamber inlet 71, and three outlets, namely the first outlet 72, the second outlet 73, and the third outlet 74. The water collection chamber 4 is provided with a total return water outlet pipe 41. The water distribution chamber inlet 71 is connected to the total return water outlet pipe 41 of the water collection chamber 4. The three outlets of the water distribution chamber 7 are respectively and correspondingly connected to the inlets of the return water inlet pipes of the three washing tubs, that is, the first outlet 72 is connected to the inlet of the first return water inlet pipe 11, the second outlet 73 is connected to the inlet of the second return water inlet pipe 21, and the third outlet 74 is connected to the inlet of the third return water inlet pipe 31. The water distribution chamber 7 can be controlled to supply circulating return water to any washing tub. Preferably, the three outlets of the water distribution chamber 7 are located on the inner side of the bottom surface of the water distribution chamber 7. A selection and connection plate 75 is covered on the three outlets. A through hole is provided on the selection and connection plate. The selection and connection plate 75 is rotatably fixed on the inner side of the bottom surface of the water distribution chamber 7 and covers the three outlets. A driving motor 76 for driving the selection and connection plate is provided outside the bottom surface of the water distribution chamber 7. By controlling the driving motor 76, the selection and connection plate rotates, and the through hole on it is matched with any one of the three outlets it covers, so as to achieve the purpose of controlling the water inlet of any washing tub. Specifically, when the first washing tub 1 needs to take in water from the water collection chamber 4, the driving motor 76 of the water distribution chamber 7 works, controls the selection and connection plate 75 to rotate, and makes the through hole on the selection and connection plate 75 coincide with the first outlet 72, opening the water path between the water distribution chamber 7 and the first return water inlet pipe 11 of the first washing tub 1. The return water in the water collection chamber 4 flows into the total return water outlet pipe 41, flows into the water distribution chamber 7 through the inlet of the water distribution chamber 7, and then flows into the first return water inlet pipe 11 through the first outlet 72 and then into the first washing tub 1.

[0056] The water distribution device in this embodiment is the water distribution chamber 7, which has a simple structure and strong controllability.

[0057] Embodiment 4

[0058] As Figure 3 shown, based on Embodiment 1, this embodiment provides a multi-tub washing machine with three washing tubs. Its water distribution device is a control valve on the return water inlet pipe of each washing tub, and other designs are the same as those in Embodiment 1; this control valve can be controlled to supply circulating return water to its corresponding washing tub. Specifically, the return water inlet pipe of each washing tub is preferably connected to the water inlet end of the water collection chamber 4. The total return water outlet pipe 41 of the water collection chamber 4 is connected, and a control valve is provided at each connection point, that is, a first control valve 81 is provided on the first return water inlet pipe 11, a second control valve 82 is provided on the second return water inlet pipe 21, and a third control valve 83 is provided on the third return water inlet pipe 31; when the first washing tub 1 and / or the second washing tub 2 and / or the third washing tub 3 need to enter the water chamber from the water collection chamber 4, the first control valve 81 and / or the second control valve 82 and / or the third control valve 83 are respectively opened, and the waterways of the first return water inlet pipe 11 and / or the second return water inlet pipe 21 and / or the third return water inlet pipe 31 and the total return water outlet pipe 41 of the water collection chamber 4 are opened to realize controlling the water collection chamber 4 to supply water to the corresponding washing tub when washing.

[0059] The water distribution device provided in this embodiment is relatively simple in structure, strong in operability, and low in cost.

[0060] In summary, the present invention provides a washing water recycling system for a multi-tub washing machine, which includes a plurality of washing tubs, a water collection chamber, and a water distribution device, wherein: each washing tub of the plurality of washing tubs is provided with a return water outlet pipe and a return water inlet pipe; the return water outlet pipe of each washing tub is connected to the water inlet end of the water collection chamber; the water outlet end of the water collection chamber is connected to the return water inlet pipes of the plurality of washing tubs; the water distribution device enables the water collection chamber to be controlled to receive the circulating return water of any washing tub by connecting with the return water outlet pipes of the plurality of washing tubs; and can be controlled to supply the circulating return water to any washing tub by connecting with the return water inlet pipes of the plurality of washing tubs; in order to realize the recycling of water, when there is water in the water storage chamber, when the user opens other washing tubs, a reminder is set on the washing machine operation interface to prompt the user whether to store water; of course, other control methods can also be used; it not only solves the problem that the relatively clean rinsing water cannot be reused at present, but also solves the problem that different washing chambers need to pause for a long time during the process of discharging sewage and entering water, thereby prolonging the washing time of the washing machine for clothes, and at the same time can also play a role in heating the washing water.

[0061] The present invention provides a washing water recycling system and a multi-tub washing machine for a multi-tub washing machine, which are not limited to those described in the specification and embodiments. Therefore, any equivalent changes or modifications made according to the structure, features, and principles of the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A washing water recycling system for a multi-tub washing machine, characterized in that, It includes multiple washing barrels, a water collection chamber and a water distribution device. The multiple washing barrels include a first, a second and a third washing barrel, which are arranged in descending order from high to low. The water distribution device and the water collection chamber are arranged vertically. Among them: Each of the multiple washing barrels is provided with a return water outlet pipe and a return water inlet pipe; the return water outlet pipe of each washing barrel is connected to the water inlet end of the water collection chamber (4); The water outlet end of the water collection chamber (4) is connected to the return water inlet pipes of multiple washing barrels; The water distribution device enables the water collection chamber (4) to be controlled to be connected to the return water outlet pipe of any one of the multiple washing barrels to receive the circulating return water of any washing barrel; and to be controlled to be connected to the return water inlet pipe of any one of the multiple washing barrels to supply the circulating return water to any washing barrel; The water distribution device is a multi-way valve (6). The multi-way valve (6) is provided with an inlet and multiple outlets. The water collection chamber (4) is provided with a total return water outlet pipe (41). The inlet of the multi-way valve (6) is connected to the total return water outlet pipe (41) of the water collection chamber (4), and the multiple outlets of the multi-way valve (6) are respectively connected to the return water inlet pipes of multiple washing barrels in one-to-one correspondence; the multi-way valve can be controlled to supply the circulating return water to any washing barrel; The multi-way valve (6) is a rotary multi-way valve, which includes: a long cylindrical housing (61), a valve core (62) rotatably arranged in the housing (61) along the axial direction of the long cylinder of the housing (61), and a driving assembly (63) arranged on one side of the valve core to drive the valve core (62) to rotate in the housing (61); among them, The upper circumferential surface of the housing (61) is provided with a housing liquid inlet (611), and the lower circumferential surface is provided with multiple housing liquid outlets; The outer circumferential surface of the valve core (62) is formed with multiple valve core liquid inlets for communicating with the housing liquid inlet (611) and multiple valve core liquid outlets for communicating with the multiple housing liquid outlets; the multiple valve core liquid inlets and the multiple valve core liquid outlets correspond to each other and form independent flow channels, and the flow channels between groups are not communicated with each other; When the valve core (62) is driven by the driving assembly (63) to rotate to different preset angles, an inlet and an outlet of a flow channel in the valve core (62) are correspondingly connected and communicated with the housing liquid inlet (611) and the housing liquid outlet according to a preset rule.

2. The washing water recycling system of a multi-tub washing machine according to claim 1, characterized in that, The water distribution device is provided with a control valve on the return water inlet pipe of each washing barrel, and the control valve can be controlled to supply the circulating return water to its corresponding washing barrel.

3. A washing water recycling system for a multi-drum washing machine according to claim 1 or 2, characterized in that, The water collection chamber (4) is connected with a total return water inlet pipe. The total return water inlet pipe of the water collection chamber is connected to the return water outlet pipe of each washing barrel, so that the circulating return water outlet in each washing barrel can be controlled to flow into the water collection chamber; a circulation pump is arranged on the total return water outlet pipe (41) of the water collection chamber to provide power for the return water of the water collection chamber (4) to be controlled to enter any washing barrel.

4. The washing water recycling system of the multi-tub washing machine according to claim 1 or 2, characterized in that, The return water outlet pipe of the third washing tub (3) is connected to the water inlet end of a three-way valve (33). One end of the water outlet end of the three-way valve (33) is connected to the total return water inlet pipe of the water collection chamber (4), and the other end is connected to the drain pipe (5).

5. The washing water recycling system of a multi-tub washing machine according to claim 1 or 2, characterized in that, A heating device and / or a filtering device and / or a sterilization and disinfection device are / is provided in the water collection chamber (4).

6. A multi-tub washing machine, which is provided with the multi-tub washing machine washing water recycling system according to any one of claims 1-5.

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