Washing machine and drainage control method thereof

Abstract

The present invention discloses a washing machine and a drainage control method thereof. The washing machine includes: a housing; an outer tub for containing washing water; a drain pipe for draining the washing water in the outer tub; a detection component for detecting whether the drain pipe is in a suspended state or a lowered state; the detection component comprises a magnetic component provided at the water outlet end of the drain pipe and a magnetic induction switch provided on the housing, and the drain pipe is adsorbed on the housing via the magnetic component. By providing a detection component for detecting whether the drain pipe is in a suspended state or a lowered state, it is possible to control whether to perform a drainage operation according to the state of the drain pipe, thereby avoiding drainage when the drain pipe is in a suspended state; by providing a magnetic component on the drain pipe, magnetic adsorption and suspension of the drain pipe can be achieved, making the suspension operation of the drain pipe simple and facilitating the stability of the drain pipe after adsorption; and saving a hook structure, which is conducive to placing the drain pipe in a floor drain.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing machines, and in particular relates to a washing machine and a drainage control method of the washing machine. Background Art

[0002] Washing machines are essential appliances in almost every household. Current washing machine designs often include a drain pipe. When not in use, the pipe is typically hung from a hook on the outer housing. During the wash cycle, the pipe needs to be removed from the hook to facilitate drainage, and the pipe's outlet is sometimes plugged into a sewer.

[0003] The drain pipe is a crucial component of a washing machine. The hook and drain pipe are integrally molded plastic parts, and the wall thickness of the part is relatively thin. Due to long-term mechanical folding, the hook can break, making it difficult to hang the washing machine drain pipe on the hook of the outer casing. Furthermore, the hook has a larger diameter, making it difficult to insert the drain pipe outlet into the sewer pipe. If it is not fully inserted, the drain pipe will fall out during drainage, and sewage will be discharged onto the ground.

[0004] In addition, users often forget to remove the drain pipe and place it in the drain, causing water to overflow from the barrel onto the ground during dehydration, or the system cannot be dehydrated for a long time, resulting in abnormal alarms and other problems.

[0005] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Summary of the Invention

[0006] In response to the above-mentioned problems in the prior art, the present invention proposes a washing machine, which can achieve magnetic adsorption and hanging of the drain pipe by arranging a magnetic component on the drain pipe; and provides a detection component for detecting the status of the drain pipe to ensure that the drainage step is performed when the drain pipe is lowered.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0008] A washing machine, comprising:

[0009] Box;

[0010] an outer tub for containing wash water;

[0011] a drain pipe, used to drain the washing water in the outer tub;

[0012] a detection component, used for detecting whether the drain pipe is in a suspended state or a lowered state;

[0013] The detection component comprises a magnetic component arranged at the water outlet end of the drain pipe and a magnetic induction switch arranged on the box body, and the drain pipe is adsorbed on the box body through the magnetic component.

[0014] Furthermore, a groove for accommodating the magnetic component is provided on the drain pipe, and the magnetic component is located in the groove.

[0015] Furthermore, a hanging area for adsorbing the drain pipe is provided on the box body, and the magnetic induction switch is located in the box body and on the inner side of the hanging area.

[0016] Furthermore, the box body is made of a material that can be adsorbed by the magnetic component.

[0017] Furthermore, a magnetic adsorption part capable of adsorbing to the magnetic component is provided in the hanging area.

[0018] Furthermore, it also includes a drainage component provided on the drainage pipe. When the drainage pipe is in a suspended state, the main control board controls the drainage component to be in a closed state.

[0019] Furthermore, when the detection component feeds back that the drain pipe is in the lowered state and the washing machine enters the drainage step, the main control board controls the drainage component to open.

[0020] Furthermore, it also includes an inner barrel and a motor for driving the inner barrel to rotate. When the washing machine enters the dehydration step and the drainage component is in a closed state, the main control board controls the motor to be in a closed state and issues an alarm at the same time.

[0021] Furthermore, the magnetic induction switch has a switch contact provided with an iron ball.

[0022] Based on the above-mentioned washing machine, the present invention further provides a drainage control method for the washing machine, wherein a detection component is provided for detecting the state of the drain pipe to ensure that the drainage step is performed when the drain pipe is lowered.

[0023] A drainage control method for the washing machine includes the following steps:

[0024] S10 detects the drain pipe status; when the washing machine enters the drainage step, the detection component detects the status of the drain pipe, when the drain pipe is in the suspended state, the process proceeds to step S20; when the drain pipe is in the lowered state, the process proceeds to step S40;

[0025] S20 alarm processing; the main control board controls the drainage components and the motor are in the off state, while the alarm; then enters S30 waiting for processing steps;

[0026] S30 waiting for processing step; within the first set time t1, retrieve the drain pipe state, when the drain pipe is in the down state, proceed to step 40; when the drain pipe is in the suspended state, continue to enter S30 for detection until the waiting processing step time reaches the first set time t1, proceed to step S60,

[0027] S40 main control board control drainage components open, the drainage step enters the empty row stage, then proceeds to step S50;

[0028] S50. When the drainage step enters the dehydration stage, the motor is started to complete the drainage;

[0029] S60. The washing machine automatically shuts down and turns off after the alarm code is displayed for the second set time t2.

[0030] Furthermore, before entering step S40 in step S30, there is also a step of pressing a start button.

[0031] Furthermore, before entering step S40 in step S30, there is a step of waiting for a third set time t3.

[0032] Furthermore, after step S60, there is also step S70. After the washing machine is turned on again, the washing machine displays an alarm code, and after the fourth set time t4, the washing machine operates normally.

[0033] Compared with the prior art, the advantages and positive effects of the present invention are as follows: by providing a detection component for detecting whether the drain pipe is in a suspended state or a lowered state, the drainage operation can be controlled according to the state of the drain pipe, thereby avoiding drainage when the drain pipe is suspended; by providing a magnetic component on the drain pipe, the drain pipe can be magnetically adsorbed and suspended, making the suspension operation of the drain pipe simple and facilitating the stability of the drain pipe after adsorption; and the hook structure is saved, facilitating the placement of the drain pipe into the floor drain. The magnetic component not only serves the function of adsorbing and suspending the drain pipe, but also serves the function of detecting whether the drain pipe is in a suspended state, which facilitates the simplification of the structure.

[0034] Other features and advantages of the present invention will become more apparent after reading the detailed description of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 This is a structural schematic diagram of an embodiment of a washing machine proposed by the present invention;

[0037] Figure 2 for Figure 1 AA-axis cross-sectional structural diagram;

[0038] Figure 3 for Figure 2 An enlarged schematic diagram of the middle part of the structure;

[0039] Figure 4 Schematic diagram of the detection circuit;

[0040] Figure 5 This is a flow chart of the first drainage method of the present invention;

[0041] Figure 6 This is a flow chart of the second drainage method of the present invention;

[0042] Figure 7 This is a flow chart of the third drainage method of the present invention. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, 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.

[0044] In the description of the present invention, it should be noted that the terms "upper," "lower," "left," and "right" and other terms indicating orientations or positional relationships are based on the positional relationships shown in the accompanying drawings, with the direction closer to the axis of the inner cylinder being "inner" and the direction opposite being "outer." These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific manner. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. A feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0045] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0046] Example 1

[0047] See also Figure 1-Figure 4 , is an embodiment of a washing machine proposed by the present invention, comprising: a housing 10, a drain pipe 20, a detection assembly 30, an outer tub 40, and an inner tub 50. The outer tub 40 and the inner tub 50 are arranged in a set within the housing 10, and the outer tub is used to hold wash water; the drain pipe 20 is used to drain the wash water in the outer tub 40, and the detection assembly 30 is used to detect whether the drain pipe 20 is in the suspended state or the lowered state. The drain pipe 20 has a water outlet and a water inlet. The detection assembly 30 includes a magnetic component 31 disposed at the water outlet of the drain pipe 20 and a magnetic induction switch 32 disposed on the housing 10. The drain pipe 20 is attracted to the housing 10 via the magnetic component 31. By providing a detection assembly 30 for detecting whether the drain pipe 20 is in a suspended state or a lowered state, the drain operation can be controlled according to the state of the drain pipe 20, thereby avoiding drainage when the drain pipe 20 is suspended. By providing a magnetic component 31 on the drain pipe 20, the drain pipe 20 can be magnetically adsorbed and suspended, making the suspension operation of the drain pipe 20 simple and facilitating the stability of the drain pipe 20 after adsorption. The hook structure is also eliminated, facilitating placement of the drain pipe in the floor drain. The magnetic component 31 not only serves to adsorb and suspend the drain pipe 20, but also serves to detect whether the drain pipe 20 is in a suspended state, thereby simplifying the structure.

[0048] In this embodiment, see Figure 3 As shown, the magnetic component 31 is arranged near the water outlet of the drain pipe 20. The magnetic component 31 is a magnet. When the drain pipe 20 is in the suspended state, the magnetic component 31 is adsorbed on the box body 10, so that the magnetic component 31 is close to the magnetic induction switch 32, so that the magnetic induction switch 32 is activated; the magnetic induction switch 32 is connected to the detection circuit, and the main control board can judge the state of the drain pipe 20 according to the connection and disconnection of the detection circuit.

[0049] There are several ways to position the magnetic component 31 on the drain pipe 20. First, the magnetic component 31 is an arc-shaped structure, bonded to the outside of the drain pipe 20. Second, the magnetic component 31 is a curved surface structure, with a groove for accommodating the magnetic component 31 defined on the drain pipe 20, within which the magnetic component 31 resides. This facilitates the stability of the magnetic component 31 after it is secured. Finally, the magnetic component 31 is a circular ring structure, sleeved onto the outside of the outlet end of the drain pipe 20.

[0050] The magnetic component 31 can realize the operation of the magnetic induction switch 32 within the sensing distance range. When the distance between the magnetic component 31 and the magnetic induction switch 32 exceeds the sensing distance, the magnetic induction switch 32 does not operate, that is, it is possible that the drain pipe 20 is in a hanging state, but the magnetic induction switch 32 does not detect it; therefore, a hanging area for adsorbing the drain pipe 20 is provided on the box body 10, and the magnetic induction switch 32 is located inside the box body 10 and on the inner side of the hanging area; it is ensured that when the drain pipe 20 is in a hanging state, the magnetic component 31 causes the magnetic induction switch 32 to operate.

[0051] To achieve magnetic induction between the magnetic induction switch 32 and the magnetic component 31, the magnetic induction switch 32 is configured with openable and closable contacts, each equipped with an iron ball 321. When the magnetic component 31 approaches the magnetic induction switch 32, the iron ball moves toward the magnetic component 31, that is, outward. When the magnetic component 31 moves away from the magnetic induction switch 32, the iron ball returns to its original position, enabling the magnetic induction switch 32 to be closed or opened when the drain pipe 20 is suspended or lowered.

[0052] In order to hang the drain pipe 20 on the box body 10 through the magnetic component 31, the box body 10 can be made of a material that can be adsorbed by the magnetic component 31, such as the box body is stamped by steel plate; or a magnetic adsorption part that can be adsorbed by the magnetic component 31 can be provided in the hanging area, such as the box body is made of plastic material, and a magnetic adsorption part is provided in the hanging area, and the magnetic adsorption part is preferably an iron block.

[0053] See also Figure 1 As shown, drain pipe 20 is provided with a drain component 60. During drainage, drain component 60 is open, and when not draining, drain component 60 is closed. Depending on whether the washing machine has top-drain or bottom-drain drainage, the corresponding drain component 60 also differs. For bottom-drain washing machines, the drain component is a drain valve; for top-drain washing machines, the drain component is a drain pump.

[0054] When the drain pipe 20 is detected to be in the suspended state, the main control board 80 controls the drain component 60 to be closed. When the detection component 30 reports that the drain pipe 20 is in the lowered state and the washing machine enters the draining step, the main control board 40 controls the drain component 60 to be open. In other words, the drain component 60 will only open when the drain pipe 20 is in the lowered state and the washing machine enters the draining step; otherwise, it will remain closed.

[0055] During the washing and dehydration process of the washing machine, the inner drum rotates under the drive of the motor 70. In the dehydration step, the inner drum rotates at a high speed, so that the water on the clothes in the inner drum 50 is thrown out by the centrifugal force and discharged through the drain pipe 20. When the washing machine enters the dehydration step and the drainage component is in the closed state, the main control board controls the motor to be in the closed state and an alarm is issued at the same time.

[0056] Example 2

[0057] This embodiment is a first drainage control method for a washing machine, and the structural arrangement of the washing machine can adopt the structure of the first embodiment.

[0058] See also Figure 5 As shown, a drainage control method for the washing machine includes the following steps:

[0059] S10 detects the status of the drain pipe 20;

[0060] When the washing machine enters the drainage step, the detection component 30 detects the state of the drain pipe 20. When the drain pipe 20 is in a suspended state, the process enters step S20; when the drain pipe is in a lowered state, the process enters step S40.

[0061] Specifically, when the washing machine is in the washing state, the washing machine does not perform the drainage operation, and thus the state of the drain pipe is detected only when the washing machine enters the drainage step; different processing steps are entered according to the different states of the drain pipe.

[0062] S20. Alarm processing;

[0063] The main control board controls the drainage component 60 and the motor 70 to be in the closed state and issues an alarm at the same time; then enters S30 to wait for processing steps.

[0064] Specifically, when the washing machine enters the drainage step, the drain pipe 20 is in a suspended state, and the main control board 80 needs to control the drainage step to be paused, that is, the drainage component 60 and the motor 70 are both in the closed state, so that the washing machine does not perform the drainage action.

[0065] S30. Waiting for processing steps;

[0066] During the first set time t1, the status of the drain pipe 20 is constantly or periodically retrieved. When the drain pipe 20 is in the lowered state, step 40 is entered; when the drain pipe 20 is in the suspended state, step S30 is continued to be detected until the waiting processing time reaches the first set time t1, then step S60 is entered.

[0067] Specifically, after the alarm is sounded in step S20, the user hears the alarm and lowers the drain pipe 20. When the detection component 30 retrieves the status of the drain pipe 20, it can be detected that the drain pipe 20 is in the lowered state; it may also be that the drain pipe 20 is not lowered within the first set time t1, then enters step S60.

[0068] S40 main control board 80 controls the drainage component to open, the drainage step enters the empty row stage, and then proceeds to step S50;

[0069] Specifically, the washing machine drainage has an emptying stage and a dehydration stage. In the emptying stage, the inner barrel does not rotate, but the drainage component 60 is opened to drain the washing water in the outer barrel 40; in the dehydration stage, the motor 70 drives the inner barrel to rotate at high speed and spin dry the clothes, so that the water adsorbed in the clothes in the inner barrel 50 is thrown out under the action of centrifugal force; in the dehydration stage, the motor 70 and the drainage component 60 need to be turned on at the same time.

[0070] S50. When the drainage step enters the dehydration stage, the motor is started to complete the drainage.

[0071] S60. The washing machine automatically shuts down and turns off after the alarm code is displayed for the second set time t2.

[0072] Example 3

[0073] This embodiment is a second method for controlling drainage of a washing machine. The structural arrangement of the washing machine may adopt the structure of the first embodiment.

[0074] See also Figure 6 As shown, a drainage control method for the washing machine includes the following steps:

[0075] S10 detects the status of the drain pipe 20;

[0076] When the washing machine enters the drainage step, the detection component 30 detects the state of the drain pipe 20. When the drain pipe 20 is in the suspended state, the process enters step S20; when the drain pipe 20 is in the lowered state, the process enters step S40.

[0077] Specifically, when the washing machine is in the washing state, the washing machine does not perform the drainage operation, and thus the state of the drain pipe 20 is detected only when the washing machine enters the drainage step; different processing steps are entered according to the different states of the drain pipe 20.

[0078] S20. Alarm processing;

[0079] The main control board 80 controls the drainage component 60 and the motor 70 to be in a closed state and issues an alarm at the same time; then enters S30 to wait for processing steps.

[0080] Specifically, when the washing machine enters the drainage step, the drain pipe 20 is in a suspended state, and the main control board 80 needs to control the drainage step to be paused, that is, the drainage component 60 and the motor 70 are both in the closed state, so that the washing machine does not perform the drainage action.

[0081] S30. Waiting for processing steps;

[0082] During the first set time t1, the status of the drain pipe 20 is constantly or periodically retrieved. When the drain pipe 20 is in the lowered state, step 40 is entered; when the drain pipe 20 is in the suspended state, step S30 is continued to be detected until the waiting processing time reaches the first set time t1, then step S60 is entered.

[0083] Specifically, after the alarm is sounded in step S20, the user hears the alarm and lowers the drain pipe 20. When the detection component 30 retrieves the status of the drain pipe 20, it can be detected that the drain pipe 20 is in the lowered state; it may also be that the drain pipe 20 is not lowered within the first set time t1, then enters step S60.

[0084] When the washing machine has entered the drainage step and the drain pipe 20 is lowered within the first set time t1 of step S30, after the drain pipe 20 leaves the box 10, the magnetic induction switch 32 can immediately feedback the signal that the drain pipe 20 is in the lowered state to the main control board. However, it takes a certain amount of time for the user to pick up the drain pipe 20 and install it to the floor drain. If the main control board 80 immediately controls to open the drain component 60, the washing water will be discharged before the drain pipe 20 is placed in the floor drain. Therefore, before entering step S40, there is also a step of pressing the start button, that is, after the user installs the drain pipe 20 to the floor drain, it is necessary to press the start button to give the main control board a signal, and then the drain component 60 is controlled to open.

[0085] In other embodiments, before entering step S40 , there is a step of waiting for a third set time t3 , and the user installs the drain pipe 20 within the third set time t3 .

[0086] S40 main control board control drainage components open, the drainage step enters the empty row stage, then proceeds to step S50;

[0087] Specifically, the drainage of the washing machine has an emptying stage and a dehydration stage. In the emptying stage, the inner barrel 50 does not rotate, but the drainage component 60 is opened to drain the washing water in the outer barrel 40; in the dehydration stage, the motor 70 drives the inner barrel 50 to rotate at high speed and spin dry the clothes, so that the water adsorbed in the clothes in the inner barrel 50 is thrown out under the action of centrifugal force; in the dehydration stage, the motor 70 and the drainage component 60 need to be turned on at the same time.

[0088] Example 4

[0089] This embodiment is a third method for controlling drainage of a washing machine. The structural arrangement of the washing machine may adopt the structure of the first embodiment.

[0090] See also Figure 7 As shown, a drainage control method for the washing machine includes the following steps:

[0091] S10 detects the status of the drain pipe 20;

[0092] When the washing machine enters the drainage step, the detection component 30 detects the state of the drain pipe 20. When the drain pipe 20 is in a suspended state, the process enters step S20; when the drain pipe is in a lowered state, the process enters step S40.

[0093] Specifically, when the washing machine is in the washing state, the washing machine does not perform the drainage operation, and thus the state of the drain pipe 20 is detected only when the washing machine enters the drainage step; different processing steps are entered according to the different states of the drain pipe 20.

[0094] S20. Alarm processing;

[0095] The main control board 80 controls the drainage component 60 and the motor 70 to be in a closed state and issues an alarm at the same time; then enters S30 to wait for processing steps.

[0096] Specifically, when the washing machine enters the drainage step, the drain pipe 20 is in a suspended state, and the main control board 80 needs to control the drainage step to be paused, that is, the drainage component 60 and the motor 70 are both in the closed state, so that the washing machine does not perform the drainage action.

[0097] S30. Waiting for processing steps;

[0098] During the first set time t1, the status of the drain pipe 20 is constantly or periodically retrieved. When the drain pipe 20 is in the lowered state, step 40 is entered; when the drain pipe 20 is in the suspended state, step S30 is continued to be detected until the waiting processing time reaches the first set time t1, then step S60 is entered.

[0099] Specifically, after the alarm is sounded in step S20, the user hears the alarm and lowers the drain pipe 20. When the detection component 30 retrieves the status of the drain pipe 20, it can be detected that the drain pipe 20 is in the lowered state; it may also be that the drain pipe 20 is not lowered within the first set time t1, then enters step S60.

[0100] When the washing machine has entered the drainage step and the drain pipe 20 is lowered within the first set time t1 of step S30, after the drain pipe 20 leaves the box 10, the magnetic induction switch 32 can immediately feedback the signal that the drain pipe 20 is in the lowered state to the main control board. However, it takes a certain amount of time for the user to pick up the drain pipe 20 and install it to the floor drain. If the main control board immediately controls to open the drainage component, the washing water will be discharged before the drain pipe 20 is placed in the floor drain. Therefore, before entering step S40, there is also a step of pressing the start button, that is, after the user installs the drain pipe 20 to the floor drain, it is necessary to press the start button to give the main control board 80 a signal, and the drainage component 60 is controlled to open again.

[0101] S40 main control board 80 controls the drainage component to open, the drainage step enters the empty row stage, and then proceeds to step S50;

[0102] Specifically, the washing machine drainage has an emptying stage and a dehydration stage. In the emptying stage, the inner barrel does not rotate, but the drainage component 60 is opened to drain the washing water in the outer barrel 50; in the dehydration stage, the motor 70 drives the inner barrel to rotate at high speed and spin dry the clothes, so that the water adsorbed in the clothes in the inner barrel 50 is thrown out under the action of centrifugal force; in the dehydration stage, the motor 70 and the drainage component 60 need to be turned on at the same time.

[0103] S50. When the drainage step enters the dehydration stage, the motor 70 is started to complete the drainage.

[0104] S60. The washing machine automatically shuts down and the alarm code is displayed after the second set time t2;

[0105] S70. After being turned on again, the washing machine displays an alarm code, and after the fourth set time t4, the washing machine operates normally.

[0106] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A drainage control method for a washing machine, characterized in that: The washing machine comprises a housing, an outer tub for containing washing water, a drain pipe for draining the washing water in the outer tub, and a detection assembly for detecting whether the drain pipe is in a suspended state or a lowered state. The detection assembly comprises a magnetic component provided at the water outlet end of the drain pipe and a magnetic induction switch provided on the housing. The drain pipe is adsorbed on the housing by the magnetic component. The drainage control method comprises the following steps: S10 detects the drain pipe status; when the washing machine enters the drainage step, the detection component detects the status of the drain pipe, when the drain pipe is in the suspended state, the process proceeds to step S20; when the drain pipe is in the lowered state, the process proceeds to step S40; S20. Alarm processing; The main control board controls the drainage components and motor to be in the closed state and issues an alarm at the same time; then enters S30 to wait for processing; S30 waiting for processing step; within the first set time t1, retrieve the drain pipe state, when the drain pipe is in the down state, proceed to step 40; when the drain pipe is in the suspended state, continue to enter S30 for detection until the waiting processing step time reaches the first set time t1, proceed to step S60; S40 main control board control drainage components open, the drainage step enters the empty row stage, then proceeds to step S50; S50. When the drainage step enters the dehydration stage, the motor is started to complete the drainage; S60. The washing machine automatically shuts down and the alarm code is displayed after the second set time t2; Before entering step S40 in step S30, there is a step of pressing a start key.

2. The drainage control method according to claim 1, characterized in that: Before entering step S40 in step S30, there is a step of waiting for a third set time t3.

3. The drainage control method according to claim 1, characterized in that: After step S60, the process further includes step S70. After the washing machine is turned on again, the washing machine displays an alarm code, and after a fourth set time t4, the washing machine operates normally.

4. The drainage control method according to claim 1, characterized in that: The drain pipe is provided with a groove for accommodating the magnetic component, and the magnetic component is located in the groove.

5. The drainage control method according to claim 1, characterized in that: A hanging area for adsorbing the drain pipe is provided on the box body, and the magnetic induction switch is located inside the box body and inside the hanging area.

6. The drainage control method according to claim 1, characterized in that: It also includes a drainage component provided on the drainage pipe. When the drainage pipe is in a suspended state, the main control board controls the drainage component to be in a closed state.

7. The drainage control method according to claim 6, characterized in that: It also includes an inner barrel and a motor for driving the inner barrel to rotate. When the washing machine enters the dehydration step and the drainage component is in a closed state, the main control board controls the motor to be in a closed state and issues an alarm at the same time.

8. The drainage control method according to any one of claims 1 to 7, characterized in that: The magnetic induction switch has a switch contact provided with an iron ball.

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