Drum washing machine

Abstract

The present application relates to the technical field of household appliances, and discloses a drum washing machine, comprising a shell, a drainage pipe, a door, a sub-drum, a first siphon and a second siphon, wherein a main washing chamber is formed inside the shell, and the shell is also provided with a clothes taking-in and putting-out opening communicated with the main washing chamber; the drainage pipe is communicated with the main washing chamber; the door is movably connected to the clothes taking-in and putting-out opening and is used to close the main washing chamber, a sub-washing chamber is constructed inside the door, and the sub-washing chamber is provided with a sub-water inlet; the sub-drum is rotatably arranged in the sub-washing chamber; the first siphon is arranged in the sub-washing chamber and is located in a position avoiding the sub-drum, the first end is at a first height from the bottom of the sub-washing chamber, and the second end is communicated with the drainage pipe; the second siphon is arranged in the sub-washing chamber and is located in a position avoiding the sub-drum, the first end is at a second height from the bottom of the sub-washing chamber, and the second end is communicated with the drainage pipe.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, for example, to a drum washing machine. Background Art

[0002] In existing drum washing machines, some drum washing machines use the recessed space of the door to set up a secondary washing chamber, which is used to wash small items. However, the space at the door of the washing machine is limited, and if the drainage device of the secondary washing chamber occupies more space, the washing capacity of the secondary washing chamber will be affected.

[0003] In the prior art, some washing machines use siphons instead of traditional drain valves for drainage. For example, Chinese patent application with publication number CN207244249U discloses a washing machine, which comprises: a housing; a rotating drum, which is rotatably disposed in the housing and comprises: a barrel; a siphon drain pipe, which is disposed on the peripheral wall of the barrel, and has a water inlet end located in the barrel and at the lower part of the barrel, and a water outlet end located outside the barrel, a drainage channel is defined in the siphon drain pipe, and liquid thrown out of the barrel is siphoned to the drainage channel by the siphon drain pipe; a water receiving tray, the drainage channel guides the liquid thrown out of the barrel to the water receiving tray; and a impeller, which is rotatably disposed in the barrel.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] The drainage of the washing machine is divided into drainage in the washing stage and drainage in the dehydration stage. After the drainage in the washing stage is completed, if the amount of water generated in the dehydration stage is small, it is not enough to exceed the highest position of the siphon tube, the siphon of the siphon tube cannot be triggered, and the water generated in the dehydration stage cannot be discharged smoothly. Summary of the invention

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The disclosed embodiments provide a drum washing machine to solve the problem of how to enable the drum washing machine to achieve a better drainage function.

[0008] The embodiment of the present disclosure provides a drum washing machine, comprising a shell, a drainage pipe, a door, a sub-drum, a first siphon and a second siphon, wherein a main washing chamber is formed inside the shell, and the shell is also provided with a clothes taking-in and putting-out opening communicated with the main washing chamber; the drainage pipe is communicated with the main washing chamber; the door is movably connected to the clothes taking-in and putting-out opening, and is used to close the main washing chamber; a sub-washing chamber is constructed inside the door, and the sub-washing chamber is provided with a sub-water injection opening; the sub-drum is rotatably arranged in the sub-washing chamber; the first siphon is arranged between the sub-washing chamber and the sub-drum, and the highest point is The washing water level of the auxiliary washing chamber is upwardly exceeded, the first end is at a first height from the bottom of the auxiliary washing chamber, and the second end is downwardly exceeded the bottom of the auxiliary washing chamber and is connected with the drain pipe; the second siphon is arranged between the auxiliary washing chamber and the auxiliary drum, the highest point of which is upwardly exceeded the washing water level of the auxiliary washing chamber, the first end is at a second height from the bottom of the auxiliary washing chamber, and the second end is downwardly exceeded the bottom of the auxiliary washing chamber and is connected with the drain pipe; wherein, the cross-sectional area of ​​the second siphon is smaller than that of the first siphon, and the second height is smaller than the first height.

[0009] In some embodiments, the second siphon tube is disposed inside the first siphon tube.

[0010] In some embodiments, the second siphon tube is at least partially fixedly connected to the first siphon tube to prevent the second siphon tube from escaping from the first siphon tube.

[0011] In some embodiments, the second siphon is a hose, and the second siphon can swing in the first siphon.

[0012] In some embodiments, the first siphon is made of a hard material.

[0013] In some embodiments, the first siphon tube is attached to the inner wall of the auxiliary washing chamber.

[0014] In some embodiments, the first siphon is a flat tube.

[0015] In some embodiments, a drain port is provided at the bottom of the auxiliary washing chamber, and when the hatch is closed, the drain port is connected to the main washing chamber, the second end of the first siphon tube and the second end of the second siphon tube are connected to the drain port, and the water in the auxiliary washing chamber enters the main washing chamber through the drain port.

[0016] In some embodiments, the drum washing machine also includes a main drum, a first transmission device and a second transmission device, wherein the main drum is arranged in the main washing chamber, and the main drum is driven and connected to the motor; the first transmission device is arranged at one end of the main drum close to the secondary drum; the second transmission device is arranged at one end of the secondary drum close to the main drum; wherein the first transmission device cooperates with the second transmission device so that the main drum drives the secondary drum to rotate.

[0017] In some embodiments, the drum washing machine also includes a water injection device and a control unit, wherein the water injection device is connected to the auxiliary water injection port; the control unit is configured to control the water injection device to add water to the auxiliary washing chamber and make it exceed a first liquid level after the main washing process of the washing machine is completed, and control the drum washing machine to dehydrate after the main washing program is completed, and the highest points of the first siphon and the second siphon are lower than the first liquid level.

[0018] The drum washing machine provided by the embodiments of the present disclosure can achieve the following technical effects:

[0019] 1. The auxiliary washing chamber is drained through the first siphon and the second siphon, and there is no need to set up a drain valve, a drain valve drive assembly and other structures, which saves cost and space and can increase the washing capacity of the auxiliary washing chamber;

[0020] 2. After the main washing program is finished, water is drained through the first siphon and the second siphon, and the drainage speed is high. After the water level drops, the siphon of the first siphon is interrupted, and water is only drained through the second siphon. The drum washing machine starts the dehydration program, and the speed of generating water is slow. The siphon drainage of the second siphon can continue during the dehydration process of the drum washing machine. The first siphon and the second siphon can make the drainage speed correspond to each stage of the washing program of the drum washing machine;

[0021] 3. When the water level drops or the drainage speed requirement is low, the water is only drained through the second siphon. The second siphon has a smaller diameter and can drain the water in the auxiliary washing chamber.

[0022] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0024] Figure 1 is a schematic diagram of the overall structure of a drum washing machine provided by an embodiment of the present disclosure;

[0025] Figure 2 is a partial structural schematic diagram of a drum washing machine provided by an embodiment of the present disclosure;

[0026] Figure 3 is a partially enlarged schematic diagram of a drum washing machine provided by an embodiment of the present disclosure;

[0027] Figure 4 is a schematic diagram of a state in which the first siphon and the second siphon of the drum washing machine provided by the embodiment of the present disclosure are simultaneously draining water;

[0028] Figure 5 is a schematic diagram of a state in which the drum washing machine provided by an embodiment of the present disclosure uses only the second siphon to drain water;

[0029] Figure 6 It is a partial structural schematic diagram of another drum washing machine provided in an embodiment of the present disclosure.

[0030] Reference numerals:

[0031] 100: housing;

[0032] 200: hatch;

[0033] 300: main washing chamber; 310: main drum;

[0034] 400: auxiliary washing chamber; 410: auxiliary drum; 420: drainage port; 430: water injection port;

[0035] 500: drainage pipe;

[0036] 600: First siphon;

[0037] 700: Second siphon. DETAILED DESCRIPTION

[0038] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0039] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0040] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0041] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0042] Unless otherwise stated, the term "plurality" means two or more.

[0043] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0044] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0045] The doors of existing drum washing machines are all concave inward, so the space at the door can be used to set up a secondary washing chamber. In this way, when washing clothes, the main washing chamber and the secondary washing chamber can be used to wash clothes at the same time. For example, the main washing chamber is used to wash the main clothes, and the secondary washing chamber is used to wash small clothes such as underwear or baby clothes. The secondary washing chamber has a small space, and setting up a drain valve or a drain pump requires additional space, and wiring needs to be done through hinges and in a flooded environment, which is costly and has low reliability, and is difficult to implement.

[0046] Combination Figure 1-6 As shown, the embodiment of the present disclosure provides a drum washing machine, including a shell 100, a drainage pipe 500, a door 200, a secondary drum 410, a first siphon 600 and a second siphon 700. A main washing chamber 300 is formed inside the shell 100, and the shell 100 is also provided with a clothes taking-in and putting-out opening communicated with the main washing chamber 300; the drainage pipe 500 is communicated with the main washing chamber 300; the door 200 is movably connected to the clothes taking-in and putting-out opening for closing the main washing chamber 300; a secondary washing chamber 400 is constructed inside the door 200, and the secondary washing chamber 400 is provided with a secondary water injection port 430; the secondary drum 410 is rotatably arranged in the secondary washing chamber 400; the first siphon 600 and the second siphon 700 are provided with a first siphon 600 and a second siphon 700. 0, is arranged between the auxiliary washing chamber 400 and the auxiliary drum 410, with the highest point exceeding the washing water level of the auxiliary washing chamber 400 upward, the first end is at a first height from the bottom of the auxiliary washing chamber 400, the second end is downward exceeding the bottom of the auxiliary washing chamber 400 and is connected with the drain pipe; the second siphon tube 700 is arranged between the auxiliary washing chamber 400 and the auxiliary drum 410, with the highest point exceeding the washing water level of the auxiliary washing chamber 400 upward, the first end is at a second height from the bottom of the auxiliary washing chamber 400, the second end is downward exceeding the bottom of the auxiliary washing chamber 400 and is connected with the drain pipe; wherein, the cross-sectional area of ​​the second siphon tube 700 is smaller than the cross-sectional area of ​​the first siphon tube 600, and the second height is smaller than the first height.

[0047] At the end of the main washing stage, the drum washing machine needs to drain the water in the washing chamber, and then dehydrate, and the water generated by dehydration is discharged in real time. After the dehydration stage, the washing stage of the drum washing machine ends or water is refilled for the rinsing stage. After the rinsing is completed, the water in the washing chamber is drained, and then dehydration is performed, and the water generated by dehydration is discharged in real time. After one or more rinsing stages are completed, the washing program ends. Therefore, the drainage stage of the drum washing machine includes a first stage of rapid drainage and a second stage of continuous drainage during dehydration.

[0048] In the disclosed embodiment, the main washing chamber 300 of the drum washing machine opens toward the door 200. Clothes can be taken in and out by opening the door 200. When the door 200 is closed, the washing chamber is sealed to prevent water from flowing out of the washing chamber. The drainage pipe 500 is used to drain the water in the main washing chamber 300. The main washing chamber 300 is located in a relatively large space, and a drainage structure such as an ordinary drain valve or a drain pump can be provided. The door 200 includes a front panel and a rear shell, and the front panel and the rear shell enclose and define a secondary washing chamber 400. A secondary drum 410 is provided in the secondary washing chamber 400, and the secondary drum 410 rotates in the secondary washing chamber 400 to wash the clothes in the secondary washing chamber 400.

[0049] A siphon is a pipe that uses the siphon phenomenon to drive water flow. The siphon includes a water suction end and a drainage end. The water suction pipe section is from the water suction end to the highest position of the siphon, and the drainage pipe section is from the highest position of the siphon to the drainage end of the siphon. The siphon needs to meet three conditions at the same time to trigger the siphon:

[0050] 1. The water inlet section and the water outlet section of the siphon pipe should be filled with water;

[0051] 2. The height of the highest point of the siphon from the water surface shall not be higher than the height of the water column supported by the atmospheric pressure. The height of the water column under standard atmospheric pressure is about 10.34 meters;

[0052] 3. The water outlet should be lower than the water surface.

[0053] In the embodiment of the present disclosure, the first siphon 600 and the second siphon 700 are used for drainage by the siphon principle. The first end of the first siphon 600 and the first end of the second siphon 700 are water suction ends, and the second end of the first siphon 600 and the second end of the second siphon 700 are drainage ends. The highest point of the first siphon 600 and the highest point of the second siphon 700 are higher than the washing water level of the auxiliary washing chamber 400. The washing water level refers to the water level when the auxiliary washing chamber 400 washes clothes. The capacity of the auxiliary washing chamber 400 is much smaller than that of the main washing chamber 300. The water level when the auxiliary washing chamber 400 washes clothes can be a fixed water level, which is the washing water level of the auxiliary washing chamber 400. Of course, multiple water levels can also be set when the auxiliary washing chamber 400 washes clothes, and the highest water level is the washing water level of the auxiliary washing chamber 400. When the washing water level of the auxiliary washing chamber 400 is at multiple water levels, the highest points of the first siphon pipe 600 and the second siphon pipe 700 are higher than the washing water level at the highest level of the auxiliary washing chamber 400. In this way, when the auxiliary washing chamber 400 is washing normally, the first siphon pipe 600 and the second siphon pipe 700 are not filled with water, the siphon condition is not met, the water will not be discharged along the first siphon pipe 600 or the second siphon pipe 700, and the washing of the drum washing machine can be carried out normally.

[0054] When the water in the auxiliary washing chamber 400 needs to be discharged, water is injected into the auxiliary washing chamber 400 through the water injection port 430 to exceed the highest position of the first siphon pipe 600 and the second siphon pipe 700 .

[0055] The auxiliary washing chamber 400 is provided with an auxiliary water injection port 430 for adding water to the auxiliary washing chamber 400. When the water in the auxiliary washing chamber 400 needs to be discharged, water is added to the auxiliary washing chamber 400 through the water injection port 430, so that the liquid level of the auxiliary washing chamber 400 exceeds the highest position of the first siphon 600 and the highest position of the second siphon 700. Figure 4As shown, the dot-dash line in the figure is the water level line. At this time, the water in the washing chamber is pressed into the drainage pipe section of the first siphon pipe 600 and the drainage pipe section of the second siphon pipe 700 under the action of atmospheric pressure. The water in the drainage pipe section of the first siphon pipe 600 flows to the drainage end of the first siphon pipe 600 under the action of gravity. When the water in the first drainage pipe section flows downward, a vacuum is formed, and the water in the water absorption pipe section of the first siphon pipe 600 is sucked into the drainage pipe section of the first siphon pipe 600. The siphon condition is met, and the siphon of the first siphon pipe 600 begins, and the water in the auxiliary washing chamber 400 is discharged. The siphon condition of the second siphon pipe 700 is also met, and the siphon of the second siphon pipe 700 begins, and the water in the auxiliary washing chamber 400 is discharged.

[0056] like Figure 5 As shown, the dotted line in the figure is the water level line. When the water level in the auxiliary washing chamber 400 is lower than the water suction end of the first siphon tube 600 and higher than the water suction end of the second siphon tube 700, the siphon condition of the first siphon tube 600 is not met, the siphoning of the first siphon tube 600 stops, and the siphoning of the second siphon tube 700 continues.

[0057] The dehydration process of the drum washing machine is started, and the dehydrated water is thrown from the secondary drum 410 into the interlayer between the secondary drum 410 and the secondary washing chamber 400, and gathers at the bottom of the secondary washing chamber 400. The diameter of the second siphon 700 is small, and the drainage speed of the second siphon 700 corresponds to the speed of dehydration, so that the siphon drainage of the dehydration process can be carried out continuously. After the speed of water generation is slow in the dehydration stage or after the dehydration process is finished, the liquid level in the secondary washing chamber 400 is lower than the water suction end of the second siphon 700. At this time, the siphon condition of the second siphon 700 is not met, and the siphon stops. The water in the secondary washing chamber 400 can be basically sucked dry by placing the water suction end of the second siphon 700 close to the bottom of the secondary washing chamber 400. It can be understood that the diameters of the first siphon 600 and the second siphon 700 can meet the drainage speed requirements of the first stage and the second stage in the drainage stage through a limited number of tests, so that the siphon of the second siphon 700 can be carried out continuously.

[0058] Optionally, the highest position of the first siphon 600 is higher than the highest position of the second siphon 700. In this way, when the water to be discharged from the auxiliary washing chamber 400 is small and the continuity of drainage is required to be high, the water can be discharged only through the second siphon 700. Specifically, water is added through the water injection port 430 so that the liquid level of the auxiliary washing chamber 400 is higher than the highest position of the second siphon 700 and lower than the highest position of the first siphon 600. At this time, water enters the drainage pipe section of the second siphon 700 and flows downward under the action of gravity so that the siphon condition of the second siphon 700 is met, and the siphon condition of the first siphon 600 is not met. At this time, the water in the auxiliary washing chamber 400 is discharged only through the second siphon 700. When the first siphon 600 and the second siphon 700 need to be drained together, water is added through the water injection port 430 so that the liquid level of the auxiliary washing chamber 400 is higher than the highest position of the first siphon 600, so that the siphon conditions of the first siphon 600 and the second siphon 700 are all met. In this case, the water injection speed needs to be greater than the drainage speed of the second siphon 700. The highest position of the first siphon 600 is higher than the highest position of the second siphon 700, and the first siphon 600 and the second siphon 700 can be selected to drain water at the same time or only use the second siphon 700 to drain water by controlling the liquid level of the auxiliary washing chamber 400, which provides more possibilities for setting the washing program of the drum washing machine and is convenient for users.

[0059] Optionally, the second siphon tube 700 is disposed inside the first siphon tube 600 .

[0060] The space of the auxiliary washing chamber 400 is limited, and the second siphon 700 is arranged in the first siphon 600 to reduce the space occupied by the first siphon 600 and the second siphon 700, thereby leaving space for the auxiliary drum 410 when the space of the auxiliary washing chamber 400 is fixed, and increasing the washing capacity of the auxiliary washing chamber 400. In addition, the second siphon 700 is arranged in the first siphon 600, and the first siphon 600 and the second siphon 700 are integrated, so that the drainage structure of the drum washing machine is modularized, which is convenient for the installation and maintenance of the drum washing machine. The arrangement form of the first siphon 600 and the second siphon 700 in the auxiliary washing chamber 400 can be fixed by fixing the arrangement form of the first siphon 600. The first siphon 600 physically limits the arrangement form of the second siphon 700. In this way, the fixing structure of the first siphon 600 and the second siphon 700 can be simplified.

[0061] Optionally, the second siphon tube 700 is at least partially fixedly connected to the first siphon tube 600 to prevent the second siphon tube 700 from escaping from the first siphon tube 600 .

[0062] The second siphon 700 is inserted into the first siphon 600. The first siphon 600 physically limits the arrangement of the second siphon 700. However, the second siphon 700 can slide in the first siphon 600 under the impact of the water flow. After the second siphon 700 slides in the first siphon 600, the positions of the water suction end and the drainage end of the second siphon 700 will change, affecting the normal realization of the drainage function of the drum washing machine. Therefore, the second siphon 700 is fixedly connected to at least part of the first siphon 600, so that the relative position of the second siphon 700 in the first siphon 600 is defined. During the use of drum washing, the positions of the water suction end and the drainage end of the second siphon 700 remain fixed, so that the drainage function of the drum washing machine can be realized normally, thereby improving the stability of the operation of the drum washing machine.

[0063] Optionally, the second siphon 700 is a hose, and the second siphon 700 can be shaken in the first siphon 600, so that when the second siphon is blocked, it can be shaken by the impact of water flow to be unblocked.

[0064] The second siphon 700 has a small diameter and may be blocked by lint and debris generated during the washing process during drainage. The second siphon 700 is configured as a hose so that the second siphon 700 can swing in the first siphon 600. During drainage, if the water suction end or the bent portion of the second siphon 700 is blocked, the blocked portion can be unblocked by shaking. If the first siphon 600 is blocked by debris, the shaking of the second siphon 700 under the impact of the water flow can stir the water flow in the first siphon so that the first siphon 600 can be unblocked. This arrangement can improve the conduction capacity of the first siphon 600 and the second siphon 700, which is conducive to the normal drainage of the drum washing machine.

[0065] Optionally, the first siphon 600 is made of a hard material.

[0066] The first siphon tube 600 has a relatively thick diameter. When siphoning is in progress, the first siphon tube 600 is in a negative pressure state. The water flow exerts a relatively large suction force on the first siphon tube 600, which is likely to flatten the first siphon tube 600, thereby affecting the normal drainage of the drum washing machine. The first siphon tube 600 is made of a hard material, which can improve the anti-sucking ability of the first siphon tube 600, thereby making the drainage of the drum washing machine more stable.

[0067] Optionally, the first siphon 600 is attached to the inner wall of the auxiliary washing chamber 400 .

[0068] The first siphon tube 600 is attached to the inner wall of the auxiliary washing chamber 400 , which can save the space occupied by the first siphon tube 600 and the second siphon tube 700 , thereby increasing the washing capacity of the auxiliary washing chamber 400 .

[0069] Optionally, the first siphon 600 is a flat tube.

[0070] The first siphon tube 600 is a flat tube. Compared with a round tube, the flat tube saves space and can effectively utilize the slit between the inner wall of the sub-drum 410 and the sub-washing chamber 400. While ensuring the drainage capacity, the space occupied by the first siphon tube 600 is reduced, thereby increasing the washing capacity of the sub-washing chamber 400.

[0071] Optionally, the first siphon pipe 600 is constructed in the wall of the auxiliary washing chamber 400. In this way, the space occupied by the first siphon pipe 600 can be further reduced.

[0072] Optionally, a drain outlet 420 is opened at the bottom of the auxiliary washing chamber 400. When the hatch 200 is closed, the drain outlet 420 is connected to the main washing chamber 300. The second end of the first siphon 600 and the second end of the second siphon 700 are connected to the drain outlet 420. The water in the auxiliary washing chamber 400 enters the main washing chamber 300 through the drain outlet 420.

[0073] The drain port 420 can be connected to the main washing chamber 300 through a pipe, or the main washing chamber 300 and the auxiliary washing chamber 400 can partially overlap in the horizontal direction. When the hatch 200 is closed, the water flowing out of the drain port 420 can flow downward into the main washing chamber 300. The drainage pipe 500 is connected to the main washing chamber 300, and the water in the auxiliary washing chamber 400 enters the main washing chamber 300 and is discharged through the drainage valve or drainage pump. This design facilitates the drainage of the auxiliary washing chamber 400.

[0074] Optionally, the bottom of the main washing chamber 300 is inclined, and the drain port of the main washing chamber 300 is located at the lowest point of the bottom of the main washing chamber. The water discharged from the auxiliary washing chamber 400 is discharged through the drain port 420 of the auxiliary washing chamber 400 and falls into the bottom of the main washing chamber 300, flows along the inclined bottom of the main washing chamber 300 to the drain port of the main washing chamber, and is discharged from the drain pipe 500. In this design form, the water discharged from the auxiliary washing chamber 400 can be quickly discharged along the inclined bottom of the main washing chamber 300, and will not contact the clothes in the main drum 310, which is conducive to the partitioned washing of the main washing chamber 300 and the auxiliary washing chamber 400.

[0075] Optionally, the drum washing machine is an inclined drum washing machine, the main washing chamber 300 is inclined, and the auxiliary washing chamber 310 is inclined. In this way, it is not only conducive to the drainage of the auxiliary washing chamber 400, but also the inclined drum washing machine door 200 is located at a higher position, which is convenient for users to take and put clothes.

[0076] Optionally, the auxiliary water injection port 430 is opened at the top of the main washing chamber 300, and the water outlet of the water injection device is fixed to the housing 100 and extends to the top of the auxiliary water injection port 430. Since the auxiliary washing chamber 400 rotates with the hatch 200, setting a flexible water pipe for water injection will occupy extra space. Considering that the hatch 200 is in a closed state when the auxiliary washing chamber 400 is injected with water, the water outlet of the water injection device is located above the water injection port 430 when the hatch 200 is closed. In this way, when injecting water, water seamlessly connects between the water injection device and the water injection port 430, and water injection is carried out continuously.

[0077] Optionally, the water injection port 430 covers the water outlet of the water injection device, that is, the projection of the water outlet of the water injection device on the plane where the water injection port 430 is located does not exceed the range of the water injection port 430. In this way, all the water coming out of the water outlet of the water injection device can enter the auxiliary washing chamber 400 from the water injection port 430, and the drum washing machine can better inject water into the auxiliary washing chamber 400.

[0078] Optionally, the drum washing machine further comprises a main drum 310, a first transmission device and a second transmission device, wherein the main drum 310 is arranged in the main washing chamber 300, and the main drum 310 is driven and connected to the motor; the first transmission device is arranged at one end of the main drum 310 close to the secondary drum 410; the second transmission device is arranged at one end of the secondary drum 410 close to the main drum 310; wherein the first transmission device cooperates with the second transmission device so that the main drum 310 drives the secondary drum 410 to rotate. For example, the first transmission device is a magnet, and the second transmission device is also a magnet. When the main drum 310 rotates, there is a magnetic traction force between the magnet of the main drum 310 and the magnet of the secondary drum 410, thereby pulling the secondary drum 410 to rotate. In such a setting form, the secondary washing barrel does not need to be provided with a separate driving device, which can not only simplify the structure and save costs, but also improve the space utilization rate to set the secondary drum 410 as large as possible, and improve the washing capacity of the secondary washing chamber 400.

[0079] Optionally, the drum washing machine further includes a water injection device and a control unit, wherein the water injection device is connected to the auxiliary water injection port 430; the control unit is configured to control the water injection device to add water to the auxiliary washing chamber 400 and make it exceed the first liquid level after the main washing stage of the washing machine is finished, and control the drum washing machine to dehydrate after the main washing stage is finished, and the highest points of the first siphon 600 and the second siphon 700 are lower than the first liquid level. The control device is provided to make the drum washing machine more automated and intelligent.

[0080] Optionally, a water collecting groove is provided at the bottom of the auxiliary washing chamber 400, and the first end of the second siphon 700 is inserted into the water collecting groove. In this way, the water in the auxiliary washing chamber 400 first fills the water collecting groove, especially when the water level in the auxiliary washing front drops close to the bottom. On the one hand, such a configuration can use the water collecting groove to collect the remaining water in the auxiliary washing chamber 400, thereby draining the water in the auxiliary washing chamber 400. On the other hand, the remaining water is in the water collecting groove, and during the dehydration process of the auxiliary drum 410 rotating, the water is not easy to enter the auxiliary drum 410, which can improve the dehydration effect of the auxiliary washing chamber 400.

[0081] Optionally, the port of the first end of the second siphon tube 700 is not arranged flush, so as to avoid the first siphon tube 600 being close to the bottom of the washing chamber and being unable to absorb water.

[0082] Optionally, the port of the first end of the first siphon tube 600 is not arranged flush, so as to avoid the first siphon tube 600 being close to the bottom of the washing chamber and being unable to absorb water.

[0083] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A drum washing machine, characterized in that: include: A shell body, a main washing chamber is formed inside, and the shell body is also provided with a clothes taking-in and putting-out opening communicated with the main washing chamber; a drainage pipe, connected to the main washing chamber; A door is movably connected to the clothes loading and unloading port and is used to close the main washing chamber. A secondary washing chamber is configured inside the door, and a secondary water injection port is provided in the secondary washing chamber. A secondary drum, rotatably disposed in the secondary washing chamber; A first siphon is disposed between the auxiliary washing chamber and the auxiliary drum, with the highest point exceeding the washing water level of the auxiliary washing chamber, a first end being at a first height from the bottom of the auxiliary washing chamber, and a second end exceeding the bottom of the auxiliary washing chamber and communicating with the drain pipe; A second siphon is disposed between the auxiliary washing chamber and the auxiliary drum, with the highest point exceeding the washing water level of the auxiliary washing chamber, the first end being at a second height from the bottom of the auxiliary washing chamber, and the second end exceeding the bottom of the auxiliary washing chamber and communicating with the drain pipe; Wherein, the cross-sectional area of ​​the second siphon tube is smaller than the cross-sectional area of ​​the first siphon tube, and the second height is smaller than the first height.

2. The drum washing machine according to claim 1, characterized in that: The second siphon pipe is disposed inside the first siphon pipe.

3. The drum washing machine according to claim 2, characterized in that: The second siphon tube is at least partially fixedly connected to the first siphon tube to prevent the second siphon tube from escaping from the first siphon tube.

4. The drum washing machine according to claim 2, characterized in that: The second siphon is a hose, and the second siphon can be shaken in the first siphon, so that when the second siphon is blocked, it can be shaken by the impact of water flow and thus be unblocked.

5. The drum washing machine according to claim 1, characterized in that: The first siphon is made of hard material.

6. The drum washing machine according to claim 1, characterized in that: The first siphon is attached to the inner wall of the auxiliary washing chamber.

7. The drum washing machine according to claim 1, characterized in that: The first siphon is a flat tube.

8. The drum washing machine according to any one of claims 1 to 7, characterized in that: A drain port is provided at the bottom of the auxiliary washing chamber. When the hatch is closed, the drain port is connected to the main washing chamber. The second end of the first siphon tube and the second end of the second siphon tube are connected to the drain port, and the water in the auxiliary washing chamber enters the main washing chamber through the drain port.

9. The drum washing machine according to claim 8, characterized in that: Also includes: A main drum is arranged in the main washing chamber, and the main drum is driven and connected to the motor; A first transmission device is arranged at one end of the main roller close to the auxiliary roller; A second transmission device is arranged at one end of the auxiliary roller close to the main roller; Wherein, the first transmission device cooperates with the second transmission device so that the main roller drives the auxiliary roller to rotate.

10. The drum washing machine according to claim 9, characterized in that: Also includes: A water injection device connected to the auxiliary water injection port; A control unit configured to control the water injection device to add water to the auxiliary washing chamber and make it exceed a first liquid level after the main washing process of the washing machine is completed, and control the drum washing machine to dehydrate after the main washing process is completed; Wherein, the highest points of the first siphon tube and the second siphon tube are lower than the first liquid level.

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