Washing machine drainage method and washing machine

Abstract

The invention belongs to the technical field of washing machines, and discloses a drainage method of a washing machine and the washing machine, and the drainage method comprises the following steps: monitoring water level frequency information of the washing machine, and controlling the washing machine to execute a corresponding drainage program according to the monitored water level frequency information. According to the method, the water level frequency information of the washing machine is monitored, the washing machine is controlled to execute the corresponding drainage program, so that stains, thread scraps and other impurities on the water level liquid level in the washing machine are extracted, the effect of cleaning an inner barrel of the washing machine is achieved, the cleanliness degree of the inner barrel is guaranteed, and the use experience of a user is further improved.

Description

Technical Field

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

[0002] With the improvement of living standards and the rapid development of science and technology, people's requirements for the quality of life are getting higher and higher. Fully automatic washing machines have begun to enter thousands of households, and the requirements for the cleaning effect and cleaning efficiency of washing machines are getting higher and higher.

[0003] Currently, the drainage method of a fully automatic washing machine is to discharge water through the holes below the inner tub. However, for some suspended stains after washing, they cannot be discharged through the bottom of the inner tub during drainage, and most of them adhere to the clothes after drainage, resulting in a poor cleaning effect and easy to cause user complaints.

[0004] Chinese Patent with Application No. 201710404739.2 discloses a drainage method for a washing machine. The method includes: after the washing operation is completed, turning on the drainage pump of the washing machine; while, before or after turning on the drainage pump of the washing machine, collecting the value of the liquid level sensor of the washing machine in real time; while, before or after turning on the drainage pump of the washing machine, obtaining the remaining water volume information of the washing machine in real time; controlling the drainage operation of the washing machine based on the value of the liquid level sensor and the remaining water volume information.

[0005] The above drainage method of the washing machine still adopts the form of draining water by a traditional drainage pump, and there will still be a situation where stains and lint remain on the inner tub after drainage, thus affecting the user's satisfaction.

[0006] In view of this, the present invention is specifically proposed. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a drainage method for a washing machine and a washing machine. By monitoring the water level frequency information of the washing machine and controlling the washing machine to execute corresponding drainage programs, it helps to achieve the effect of cleaning the inner tub of the washing machine, ensure the cleanliness of the inner tub, and improve the user experience.

[0008] The basic concept of the technical solution adopted by the present invention to solve the above technical problem is:

[0009] A drainage method for a washing machine includes:

[0010] Monitoring the water level frequency information of the washing machine, and controlling the washing machine to execute corresponding drainage programs according to the monitored water level frequency information.

[0011] Further, the drainage program includes a pumping stage and a drainage stage. When the washing machine monitors that the water level frequency meets the pumping condition, it controls the suction pipe inside the washing machine to extend by a corresponding length and pumps water from above the inner tub.

[0012] Further, the pumping condition includes that when the washing machine monitors that the change amplitude of the water level frequency within the first preset time is less than or equal to the preset value, it controls the suction pipe to extend into the inner tub by a first preset length.

[0013] Further, the pumping condition further includes that when the washing machine monitors that the change amplitude of the water level frequency is less than or equal to the preset value every first preset time, it controls the suction pipe to continue to extend by the first preset length.

[0014] Further, when the washing machine monitors that the change amplitude of the water level frequency within the second preset time is less than or equal to the preset value, it controls the length of the suction pipe to retract to the original position.

[0015] Further, when the suction pipe retracts to the original position, it controls the washing machine to continue to execute the pumping program for a third preset time and controls the washing machine to enter the drainage stage.

[0016] Further, the change amplitude of the water level frequency corresponds one-to-one with the height of the water level liquid surface inside the washing machine.

[0017] Further, before monitoring the water level frequency of the washing machine, it includes:

[0018] After monitoring that the washing program or the rinsing program of the washing machine ends, the washing machine enters the drainage stage and starts to monitor the water level frequency of the washing machine.

[0019] According to another object of the present invention, there is also provided a washing machine, including the drainage method of the above-mentioned washing machine.

[0020] Further, the washing machine includes an inner tub, a drainage pump, and a drain pipe. The drainage pump is arranged below the inner tub and is communicated with the drain pipe;

[0021] It further includes a suction pipe, a motor, and a water pump. The water pump is arranged on one side of the drainage pump and is communicated with the drain pipe; the suction pipe is arranged in the inner tub and is communicated with the water pump; the motor controls the extending length of the suction pipe.

[0022] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0023] In the present invention, by monitoring the water level frequency information of the washing machine and controlling the washing machine to execute the corresponding drainage program, it helps to achieve the effect of cleaning the inner tub of the washing machine, ensure the cleanliness of the inner tub, and improve the user experience.

[0024] In the present invention, when the change amplitude of the water level frequency is less than or equal to a preset value, the suction pipe is controlled to extend by a first preset length, which can ensure that the suction pipe contacts the water level surface or extends below the water level surface to realize the drainage process.

[0025] In the present invention, every first preset time, the washing machine judges whether the change amplitude is less than or equal to the preset value according to the monitored water level frequency. If the change amplitude of the water level frequency is less than or equal to the preset value, the suction pipe is controlled to continue to extend by the first preset length again. After the water level surface drops, the extension length of the suction pipe continues to increase, keeping the suction pipe extending below the water level surface to realize the process of extracting stains and impurities by the suction pipe.

[0026] The following further describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, as part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention, but do not constitute an improper limitation to the present invention. Obviously, the accompanying drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0028] Figure 1 is the process schematic in the present invention Figure 1 ;

[0029] Figure 2 is the process schematic in the present invention Figure 2 ;

[0030] Figure 3 is the process schematic in the present invention Figure 3 ;

[0031] Figure 4 is the schematic diagram of the washing machine in the present invention.

[0032] In the figure: 1, outer tub; 2, inner tub; 3, water level sensor; 4, drain pump; 5, drain pipe; 6, water extraction pump; 7, suction pipe; 71, water extraction port; 8, motor.

[0033] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0035] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0036] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Currently, the drainage method of a fully automatic washing machine is to drain through the holes below the inner tub. However, for some suspended stains after washing, they cannot be drained through the bottom of the inner tub during drainage, and most of them adhere to the clothes after drainage, resulting in poor cleaning effect and easy to cause user complaints.

[0038] Embodiment 1

[0039] To solve the above technical problems, as Figures 1 to 3 shown, this embodiment provides a drainage method for a washing machine, including:

[0040] Monitoring the water level frequency information of the washing machine, and controlling the washing machine to execute the corresponding drainage program according to the monitored water level frequency information.

[0041] In this embodiment, the washing machine includes an inner tub 2 and an outer tub 1. The inner tub 2 is installed inside the outer tub 1. The inner tub 2 is used to place the clothes to be washed and agitate the clothes to achieve the effect of cleaning the clothes.

[0042] Furthermore, the washing machine includes a drainage pump 4 and a drainage pipe 5. The drainage pump 4 is arranged below the inner tub 2. One end of the drainage pump 4 is communicated with the drainage port of the inner tub 2, and the other end is communicated with the drainage pipe 5. The washing water in the inner tub 2 is sucked by the drainage pump 4 and discharged through the drainage pipe 5, thereby realizing the downward drainage process of the washing water in the inner tub 2.

[0043] In this embodiment, stains generated during the washing process of the clothes and lint of the clothes are likely to remain in the inner tub 2 or deposit on the clothes. When the washing water in the inner tub 2 is drained through the lower drain, the stains and lint are easily left at the bottom of the inner tub 2. If not cleaned for a long time, it is easy to breed bacteria or affect the washing effect of the clothes. At this time, the user needs to actively clean the inner tub 2 after each washing to keep the inner tub 2 clean, which will also cause user complaints and affect the user experience.

[0044] Furthermore, the washing machine further includes a water pump 6, a motor 8 and a water suction pipe 7.

[0045] Specifically, the water pump 6 is arranged below the inner tub 2 and is arranged side by side with the drain pump 4. One end of the water pump 6 is communicated with the water suction pipe 7, and the other end is communicated with the drain pipe 5. The water suction pipe 7 is installed above the inner tub 2, and the water suction pipe 7 can extend into the inner tub 2; the water suction port 71 of the water suction pipe 7 can be in contact with the water level surface or extend below the water level surface. The motor 8 can be used to adjust the extending length of the water suction pipe 7 to control the water suction pipe 7 to extend or shorten.

[0046] Furthermore, the washing machine further includes a water level sensor 3, and the water level sensor 3 is installed between the outer tub 1 and the inner tub 2.

[0047] Specifically, the water level sensor 3 is used to monitor the water level frequency information in the inner tub 2, and then send the water level frequency information to the main control system of the washing machine. The main control system adjusts the length of the water suction pipe 7 according to the obtained water level frequency information, so as to realize the water suction pipe 7 sucking the washing water in the inner tub 2, realizing the upper drainage process of the washing machine, so as to extract impurities such as stains and lint floating in the washing water. After the upper drainage process is over, drain through the lower drain to ensure the cleanliness of the inner tub 2 after drainage and improve the user experience.

[0048] In this embodiment, monitor the water level frequency information of the washing machine, and control the washing machine to execute the corresponding drainage program according to the monitored water level frequency information.

[0049] Specifically, after the washing machine finishes washing or rinsing the clothes, a drainage process is required. The water level sensor 3 monitors the water level frequency information in the washing machine and sends the water level frequency information to the main control system. The main control system controls the washing machine to execute the corresponding drainage program according to the monitored water level frequency information, that is, controls the washing machine to execute the upper drainage process.

[0050] It can be seen that by monitoring the water level frequency information of the washing machine and controlling the washing machine to execute the corresponding drainage program, it helps to achieve the effect of cleaning the inner tub 2 of the washing machine, ensure the cleanliness of the inner tub 2, and improve the user experience.

[0051] Further, the drainage program includes a pumping stage and a draining stage. When the washing machine monitors that the water level frequency meets the pumping condition, it controls the suction pipe 7 in the washing machine to extend by a corresponding length and pumps water from above the inner tub 2.

[0052] Specifically, the drainage program includes a pumping stage and a draining stage. The draining stage corresponds to the above-mentioned downward drainage process, that is, the washing water in the inner tub 2 is pumped by the drainage pump 4, so that the washing water flows out after being discharged from the drainage port below the inner tub 2 to the drainage pipe 5.

[0053] The pumping stage corresponds to the above-mentioned upward drainage process, that is, the washing water on the water level surface in the inner tub 2 and the impurities floating on the water level surface are pumped by the water pump 6, so that part of the washing water and impurities flow out after being discharged from the suction pipe 7 above the inner tub 2 to the drainage pipe 5.

[0054] In the specific implementation process, when the washing machine sends the monitored water level frequency information to the main control system, and the main control system determines that the current water level frequency meets the preset pumping condition, it controls the suction pipe 7 of the washing machine to extend by a corresponding length, thereby realizing the process of pumping water from above the inner tub 2.

[0055] Embodiment 2

[0056] This embodiment is a further description of the above Embodiment 1.

[0057] As Figure 2 shown, in this embodiment, the pumping condition includes that when the washing machine monitors that the change range of the water level frequency within the first preset time is less than or equal to the preset value, it controls the suction pipe 7 to extend into the inner tub 2 by a first preset length.

[0058] Specifically, when the water level frequency monitored by the washing machine meets the pumping condition, it controls the washing machine to perform the above-mentioned upward drainage process.

[0059] In this embodiment, the first preset time refers to monitoring the water level frequency in the washing machine within a certain period of time.

[0060] The first preset length refers to the extended length at which the suction pipe 7 can contact the water level surface after the change range of the water level frequency reaches the preset value.

[0061] The pumping condition specifically includes: when the washing machine monitors that the change range of the water level frequency within the first preset time is less than or equal to the preset value, that is, when the change range of the water level frequency is less than or equal to the preset value, the washing machine starts to execute the upward drainage program. The suction pipe 7 needs to contact the water level surface. Controlling the suction pipe 7 to extend by the first preset length can ensure that the suction pipe 7 contacts the water level surface or extends below the water level surface, realizing the above-mentioned upward drainage process.

[0062] In this embodiment, the first preset time and the first preset length can be adaptively adjusted according to specific usage requirements, which will not be elaborated here.

[0063] Embodiment III

[0064] The difference between this embodiment and the above Embodiment II is that: the pumping condition further includes that when the washing machine monitors that the change amplitude of the water level frequency is less than or equal to the preset value after every first preset time, the suction pipe 7 is controlled to continue to extend by the first preset length.

[0065] The first preset length needs to ensure that the water pumping port of the suction pipe is always below the water level surface.

[0066] Specifically, when the water level frequency monitored by the washing machine meets the pumping condition, the washing machine is controlled to perform the above-mentioned upward drainage process.

[0067] In the specific implementation process, when the washing machine monitors that the change amplitude of the water level frequency is less than or equal to the preset value within the first preset time, the suction pipe 7 is controlled to extend by the first preset length, so that the water suction port of the suction pipe extends below the water level surface. However, every time the washing machine monitors the water level frequency at an interval of the first preset time, it judges whether the change amplitude is less than or equal to the preset value. If the change amplitude of the water level frequency is less than or equal to the preset value, the suction pipe 7 is controlled to continue to extend by the first preset length again. After the water level surface drops, the extension length of the suction pipe 7 continues to increase, keeping the suction pipe 7 extending below the water level surface, and realizing the process of the suction pipe 7 sucking stains and impurities.

[0068] Embodiment IV

[0069] This embodiment is a further description of the above Embodiments I to III.

[0070] As Figure 3 shown, in this embodiment, when the washing machine monitors that the change amplitude of the water level frequency is less than or equal to the preset value within the second preset time, the length of the suction pipe 7 is controlled to retract to the original position.

[0071] Specifically, when the washing machine monitors that the change amplitude of the water level frequency does not meet the pumping condition, the upward drainage process is stopped, and the washing machine is controlled to separately perform the above-mentioned downward drainage process.

[0072] In this embodiment, the second preset time means that after a period of time, the washing machine is no longer controlled to perform the upward drainage process. The second preset time is greater than the first preset time; the first preset time is T, and the second preset time can be 2.5T. The second preset time can be adaptively adjusted according to specific usage requirements.

[0073] In a specific implementation process, when the washing machine monitors that the change amplitude of the water level frequency is less than or equal to a preset value after a second preset time, that is, after 2.5T time, the water level in the washing machine is lower than the clothes. At this time, it is necessary to control the washing machine not to perform the above-mentioned upward drainage process, and control the length of the suction pipe 7 to retract to the original position.

[0074] Further, when the suction pipe 7 retracts to the original position, control the washing machine to continue to perform the pumping program for a third preset time, and control the washing machine to enter the downward drainage stage.

[0075] Specifically, when the washing machine monitors that the change amplitude of the water level frequency does not meet the preset value, control the suction pipe 7 to extend back to the original position, and control the washing machine to perform the pumping program for a third preset time, that is, control the washing machine to perform the above-mentioned downward drainage process. At this time, the drainage pump 4 of the washing machine works to discharge the remaining washing water in the inner tub 2 from the bottom of the inner tub 2, thereby accelerating the drainage speed of the washing water.

[0076] In this embodiment, the change amplitude of the water level frequency corresponds one-to-one with the height of the water level surface in the washing machine.

[0077] Specifically, the change amplitude of the water level frequency corresponds one-to-one with the height of the water level surface in the washing machine, that is, the height of the water level surface in the washing machine can be represented by the change amplitude of the water level frequency. The higher the water level surface height, the lower the corresponding water level frequency. When the change amplitude of the water level frequency meets the preset pumping condition, the washing machine can be controlled to perform the above-mentioned pumping program, so as to control the motor 8 to release the suction pipe 7 of an appropriate length.

[0078] Embodiment Five

[0079] This embodiment is a further description of the above Embodiments One to Four.

[0080] As Figure 4 shown, according to another object of the present invention, there is also provided a washing machine, including the drainage method of the washing machine described above.

[0081] Further, the washing machine includes an inner tub 2, a drainage pump 4 and a drainage pipe 5.

[0082] Specifically, the drainage pump 4 is arranged below the inner tub 2. One end of the drainage pump 4 is communicated with the drainage port of the inner tub 2, and the other end is communicated with the drainage pipe 5. The washing water in the inner tub 2 is discharged through the drainage pipe 5 after being sucked by the drainage pump 4, thereby realizing the downward drainage process of the washing water in the inner tub 2.

[0083] Further, the washing machine further includes a suction pipe 7, a motor 8 and a water pump 6.

[0084] Specifically, the water pump 6 is arranged below the inner barrel 2 and is arranged side by side with the drainage pump 4. One end of the water pump 6 is communicated with the water suction pipe 7, and the other end is communicated with the drainage pipe 5. The water suction pipe 7 is installed above the inner barrel 2, and the water suction pipe 7 can extend out of the inner barrel 2; the water pumping port 71 of the water suction pipe 7 can contact the water level liquid surface or extend below the water level liquid surface. The motor 8 can be used to adjust the extending length of the water suction pipe 7 and control the extension or shortening of the water suction pipe 7.

[0085] The above are only the preferred embodiments of the present invention, and there is no any form of limitation to the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications using the technical content prompted above as equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A method for draining water from a washing machine, characterized in that: include: The water level frequency information of the washing machine is monitored, and the washing machine is controlled to execute a corresponding drainage program according to the monitored water level frequency information.

2. The drainage method of a washing machine according to claim 1, characterized in that: The drainage procedure includes a pumping stage and a drainage stage. When the washing machine detects that the water level frequency meets the pumping condition, the water suction pipe in the washing machine is controlled to extend to a corresponding length and pump water from above the inner barrel.

3. The drainage method of a washing machine according to claim 2, characterized in that: The water pumping condition includes controlling the water suction pipe to extend into the inner tub by a first preset length when the washing machine detects that the change amplitude of the water level frequency is less than or equal to a preset value within a first preset time.

4. The drainage method of a washing machine according to claim 3, characterized in that: The pumping condition also includes that when the washing machine detects that the change amplitude of the water level frequency is less than or equal to a preset value after every first preset time, the water suction pipe is controlled to continue to extend to a first preset length.

5. The drainage method of a washing machine according to claim 2, characterized in that: When the washing machine detects that the change amplitude of the water level frequency is less than or equal to the preset value within the second preset time, the length of the water suction pipe is controlled to extend back to the original position.

6. The drainage method of a washing machine according to claim 4, characterized in that: When the water suction pipe is extended back to the original position, the washing machine is controlled to continue to execute the water pumping program for the third preset time, and the washing machine is controlled to enter the water drainage stage.

7. The drainage method of a washing machine according to claim 1, characterized in that: The variation amplitude of the water level frequency corresponds to the water level height in the washing machine.

8. The drainage method of a washing machine according to claim 1, characterized in that: Before monitoring the water level frequency of the washing machine, including: After monitoring that the washing program or the rinsing program of the washing machine is finished, the washing machine enters a drainage phase and starts to monitor the water level frequency of the washing machine.

9. A washing machine, characterized in that: A drainage method for a washing machine comprising the steps of any one of claims 1 to 8.

10. The washing machine according to claim 9, characterized in that: The washing machine comprises an inner tub, a drainage pump and a drainage pipe, wherein the drainage pump is arranged below the inner tub and communicated with the drainage pipe; It also includes a water suction pipe, a motor and a water pump. The water pump is arranged on one side of the drainage pump and is connected to the drainage pipe. The water suction pipe is arranged in the inner barrel and is connected to the water pump. The motor controls the extension length of the water suction pipe.

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