Washing equipment and defoaming control method thereof

Abstract

According to the washing equipment and the defoaming control method thereof, in the dewatering process, when it is monitored that the running current of a driving motor exceeds a first current preset value, it is indicated that more foam remains between an outer barrel and an inner barrel, and rapid defoaming is conducted in a defoaming agent feeding mode; when the running current of the driving motor is monitored to be between a first current preset threshold value and a second current preset threshold value, the residual foam of the outer barrel and the inner barrel is less, the defoaming is carried out in a manner of alternately rotating and draining the inner barrel, and when the running current does not exceed the second current preset threshold value, the residual foam of the outer barrel and the inner barrel is not explained; and normal dehydration can be carried out. The most appropriate defoaming mode can be selected according to different foam amounts, the defoaming efficiency can be improved, the cost is saved, and the environmental pollution is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of washing equipment, and in particular relates to a washing equipment and a defoaming control method thereof. Background Art

[0002] At present, washing machines produce foam when washing clothes. Some foam exists between the inner and outer barrels. During the drainage process, the foam has a certain degree of adhesion, and the foam in the narrow space between the outer and inner barrels is not easy to be discharged with the water. The presence of foam between the inner and outer barrels increases the resistance to the rotation of the inner barrel. In severe cases, it may cause the drive motor to stall, causing the temperature rise of the drive motor to continue to rise, and eventually causing the thermal protection of the drive motor to stop working.

[0003] In order to eliminate the foam, there is a solution of adding defoaming agent to eliminate the foam. According to the height of the foam, the defoaming agent is added gradually until the foam is eliminated. This method has the technical problems of using too much defoaming agent, resulting in increased washing costs, and using too much defoaming agent to aggravate environmental pollution.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In view of the above problems in the prior art, the present invention proposes a washing device and a defoaming control method thereof, which solves the technical problems that the existing washing equipment uses defoaming agents for defoaming, which results in a large amount of defoaming agents, increased washing costs and aggravated environmental pollution.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: A defoaming control method for a washing device, the washing device comprising an outer tub, an inner tub and a driving motor, the defoaming control method comprising: After washing, the water is drained, and after the water is drained, the dehydration process begins; During the dehydration process, monitoring the operating current of the driving motor; When the operating current exceeds the first current preset value, the dehydration is stopped and the first defoaming control program is entered: rinsing is performed, a defoaming agent is added during the rinsing process, the water is drained after the rinsing is completed, and the dehydration process is entered after the drainage is completed; When the operating current is between the first current preset value and the second current preset value, the dehydration is stopped and the second defoaming control program is entered: water is added to the set defoaming water level, the inner barrel is controlled to rotate and drain water alternately to defoam, and the dehydration process is entered after the drainage is completed; When the operating current does not exceed the second current preset value, continuing the dehydration process; Wherein, the second current preset value is less than the first current preset value.

[0007] According to the defoaming control method for the washing equipment as described above, the method for controlling the rotation of the inner barrel for defoaming is: controlling the inner barrel to run at a first speed with a set start-stop ratio or controlling the inner barrel to run continuously at a second speed.

[0008] The defoaming control method for the washing equipment as described above controls the inner barrel to rotate and drain alternately to perform defoaming, and the water level / volume is set during the timed drainage, and the first rotation speed and the second rotation speed are both negatively correlated with the current water level.

[0009] The defoaming control method for the washing equipment as described above, the washing equipment includes a spray device, and the method for controlling the inner barrel to rotate and defoam is: controlling the spray device to spray water to a set defoaming water level, and controlling the inner barrel to continuously run at a second speed, wherein the first speed is less than the second speed, and the set defoaming water level corresponding to the inner barrel running at the first speed with a set start-stop ratio is higher than the set defoaming water level corresponding to the inner barrel running at the second speed.

[0010] According to the defoaming control method for a washing device as described above, the washing device comprises an internal circulation pipeline and a drainage pipeline. During the drainage process of the second defoaming control procedure, the drainage pipeline and the internal circulation pipeline drain water simultaneously or alternately.

[0011] The defoaming control method for washing equipment as described above counts the number of times the first defoaming control program is run, and enters the second defoaming control program when the number of times the first defoaming control program is run exceeds a set number and the running current exceeds a first current preset value.

[0012] In the defoaming control method for washing equipment as described above, the amount of defoaming agent added is positively correlated with the operating current.

[0013] The defoaming control method for the washing equipment as described above detects the washing water level or the foam height during the washing process. When the washing water level is higher than the first set defoaming water level or the foam height is higher than the set foam height, the defoaming agent is added some time before the end of washing. After the washing is completed, the water is drained and the dehydration process begins after the drainage is completed.

[0014] According to the defoaming control method for a washing machine as described above, during the dehydration process, the operating current of the driving motor is monitored within a set time after the start of the dehydration.

[0015] A washing device, which performs washing according to the above-mentioned defoaming control method.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are as follows: the washing device of the present invention comprises an outer barrel, an inner barrel and a driving motor, and the defoaming control method of the washing device is as follows: drain water after washing, and enter the dehydration process after draining water; monitor the operating current of the driving motor during the dehydration process; when the operating current exceeds the first current preset value, stop dehydration, and enter the first defoaming control program: rinse, add defoaming agent during the rinsing process, drain water after rinsing, and enter the dehydration process after draining water; when the operating current is between the first current preset value and the second current preset value, stop dehydration, and enter the second defoaming control program: add water to the set defoaming water level, control the inner barrel of the defoaming control method to rotate and drain water alternately to defoam, and enter the dehydration process after draining water; when the operating current does not exceed the second current preset value, continue the dehydration process. Wherein, the second current preset value is less than the first current preset value. In the dehydration process of the present invention, when the operating current of the monitoring driving motor exceeds the first current preset value, it indicates that there is a lot of residual foam between the outer barrel and the inner barrel, and rapid defoaming is performed by adding a defoaming agent; when the operating current of the monitoring driving motor is between the first current preset threshold value and the second current preset threshold value, it indicates that there is less residual foam in the outer barrel and the inner barrel, and defoaming is performed by rotating the inner barrel and draining water alternately. When the operating current does not exceed the second current preset threshold value, it indicates that there is no residual foam in the outer barrel and the inner barrel, and normal dehydration can be performed. The present invention can select the most appropriate defoaming method according to different amounts of foam, which can improve defoaming efficiency, save costs, and reduce environmental pollution.

[0017] The washing device of the present invention performs washing control by the above-mentioned defoaming control method. During the dehydration process, when the operating current of the monitoring driving motor exceeds the first current preset value, it indicates that there is a lot of residual foam between the outer barrel and the inner barrel, and rapid defoaming is performed by adding a defoaming agent; when the operating current of the monitoring driving motor is between the first current preset threshold value and the second current preset threshold value, it indicates that there is less residual foam in the outer barrel and the inner barrel, and defoaming is performed by alternately rotating the inner barrel and draining the water. When the operating current does not exceed the second current preset threshold value, it indicates that there is no residual foam in the outer barrel and the inner barrel, and normal dehydration can be performed. The present invention can select the most appropriate defoaming method according to different amounts of foam, which can improve defoaming efficiency, save costs, and reduce environmental pollution.

[0018] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces 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 creative work.

[0020] Figure 1 It is a schematic diagram of the structure of a washing device according to a specific embodiment of the present invention.

[0021] Figure 2 The present invention is a flowchart of a defoaming control method according to a specific embodiment of the present invention.

[0022] Figure 3 The figure is a flow chart of a defoaming control method according to another specific embodiment of the present invention.

[0023] Figure 4 The present invention is a flowchart of a defoaming control method according to another specific embodiment of the present invention.

[0024] Figure 5 It is a schematic structural diagram of a washing device according to another specific embodiment of the present invention.

[0025] Figure 6 The figure is a flow chart of the second defoaming control process of a specific embodiment of the present invention.

[0026] In the figure: 1. Outer barrel; 2. Inner barrel; 3. Drive motor; 4. Drainage pipeline; 5. Internal circulation pipeline. DETAILED DESCRIPTION

[0027] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the positional relationships shown in the accompanying drawings, with the direction closer to the center of the cover body being "inside", and the opposite being "outside". The terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0032] This embodiment proposes a washing device and a defoaming control method thereof. The washing device includes an outer barrel, an inner barrel and a driving motor. The defoaming control method of the washing device is as follows: drain water after washing, and enter the dehydration process after draining water; monitor the operating current of the driving motor during the dehydration process; when the operating current exceeds the first current preset value, stop dehydration and enter the first defoaming control program: rinse, add defoaming agent during the rinsing process, drain water after rinsing, and enter the dehydration process after draining water; when the operating current is between the first current preset value and the second current preset value, stop dehydration and enter the second defoaming control program: add water to the set defoaming water level, control the inner barrel to rotate and drain water alternately for defoaming, and enter the dehydration process after draining water; when the operating current does not exceed the second current preset value, continue the dehydration process. Wherein, the second current preset value is less than the first current preset value. During the dehydration process, when the operating current of the monitoring drive motor exceeds the first current preset value, it indicates that there is a lot of residual foam between the outer barrel and the inner barrel, and defoaming is quickly performed by adding defoaming agent; when the operating current of the monitoring drive motor is between the first current preset threshold and the second current preset threshold, it indicates that there is less residual foam in the outer barrel and the inner barrel, and defoaming is performed by alternating the rotation of the inner barrel and the drainage. When the operating current does not exceed the second current preset threshold, it indicates that there is no residual foam in the outer barrel and the inner barrel, and normal dehydration can be performed. The washing equipment can select the most appropriate defoaming method according to different amounts of foam, which can improve defoaming efficiency, save costs, and minimize environmental pollution.

[0033] Among them, the washing device can be a washing machine, a shoe washing machine, etc. with an outer barrel, an inner barrel and a driving motor.

[0034] Taking a washing machine as an example, the washing equipment and its defoaming control method are specifically described below: First, let me explain the structure of the washing machine: exist Figure 1 In the example, the washing machine includes an outer tub 1, an inner tub 2, a driving motor 3 and a drainage pipe 4.

[0035] The inner tub 2 is located inside the outer tub 1 and can rotate relative to the outer tub 1. The driving motor 3 drives the inner tub 2 to rotate.

[0036] A drainage pipe 4 is connected to the bottom of the outer tub 1, and the drainage pipe 4 is used to drain water to the outside of the washing machine.

[0037] In a bottom drainage washing machine, the drainage pipe 4 can be controlled by a control valve to control whether to drain water.

[0038] In the upper drainage washing machine, the drainage pipe 4 needs to be lifted by a water pump to achieve drainage, so the drainage pipe 4 has a drainage pump.

[0039] The defoaming control method of the washing machine is: After washing, the water is drained and then it enters the dehydration process.

[0040] During the dehydration process, monitor the operating current of the drive motor.

[0041] Specifically, the operating current of the drive motor is monitored in real time or periodically through the current detection module.

[0042] After washing is completed, since the foam between the inner tub and the outer tub tends to decrease gradually over time, in order to simplify the procedure and save energy, during the dehydration process, the operating current of the drive motor can be monitored within a set time after the start of dehydration.

[0043] When the operating current exceeds the first current preset value, it means that there is a lot of residual foam between the outer barrel and the inner barrel, so dehydration is stopped and the first defoaming control program is entered.

[0044] Among them, the first current preset value is a value determined in advance through experiments. When the first current preset value is exceeded, the second defoaming control program cannot quickly achieve effective results, which will greatly extend the washing time. Therefore, the first defoaming control program is adopted.

[0045] The first defoaming control procedure is: rinsing, adding defoaming agent during the rinsing process, draining after rinsing, and entering the dehydration process after draining.

[0046] In some embodiments, a defoaming agent is added while rinsing water.

[0047] In some embodiments, a defoamer is administered prior to the rinse water.

[0048] In some embodiments, the defoaming agent is added during the set rinsing water inlet time.

[0049] The rinsing process can be a conventional rinsing process.

[0050] In some embodiments, the dosage of the defoaming agent is a fixed value.

[0051] In some embodiments, the amount of defoaming agent added is determined according to actual conditions. Since the amount of residual foam between the outer barrel and the inner barrel is uncertain, in order to achieve more reasonable defoaming, the amount of defoaming agent added is related to the amount of residual foam between the outer barrel and the inner barrel. Since the operating current of the driving motor reflects the amount of residual foam between the outer barrel and the inner barrel, the amount of defoaming agent added is related to the operating current.

[0052] Specifically, the amount of defoaming agent added is positively correlated with the operating current. That is, the greater the operating current of the driving motor, the more residual foam there is between the outer barrel and the inner barrel, and adding more defoaming agent can quickly eliminate foam, solving the problem of insufficient amount and poor defoaming effect caused by quantitative addition; the smaller the operating current of the driving motor, the less residual foam there is between the outer barrel and the inner barrel, and adding less defoaming agent can achieve defoaming, solving the problem of excessive amount caused by quantitative addition, wasting costs and increasing environmental pollution.

[0053] When the operating current is between the first current preset value and the second current preset value, it means that there is less residual foam between the outer barrel and the inner barrel, and dehydration is stopped to enter the second defoaming control program.

[0054] The second current preset value is a value determined in advance through experiments. If the second current setting value is exceeded, there is a risk of the motor stalling.

[0055] The second defoaming control procedure is: water is added to the set defoaming water level, and the inner barrel is controlled to rotate and drain alternately to defoam, and the dehydration process is entered after the drainage is completed.

[0056] In some embodiments, the method of controlling the inner barrel to rotate and defoam is: controlling the inner barrel to run at a first speed with a set rotation-stop ratio, and alternately with drainage until the drainage is completed. The inner barrel is rotated and stopped to shake the foam between the barrels and then drain the water, so as to achieve the effect of the foam being flushed and then discharged.

[0057] During the process of controlling the inner barrel to rotate and defoam, the water level / volume is set during the timed drainage.

[0058] The first rotation speed is negatively correlated with the current water level, that is, the higher the current water level is, the lower the first rotation speed is, and the lower the current water level is, the higher the first rotation speed is.

[0059] The first rotation speed is between 100-160 rpm. In some embodiments, the method of controlling the inner barrel to rotate and defoam is: controlling the inner barrel to continuously run at the second rotation speed, and alternately with drainage, until the drainage is completed.

[0060] The washing device includes a spray device, and the method for controlling the inner barrel to rotate and defoam is: controlling the spray device to spray water to a set defoaming water level, controlling the inner barrel to continuously run at a second speed, and alternately with drainage until the drainage is completed. The water sprayed by the spray device is used to simultaneously rinse the foam between the inner barrel and the outer barrel and the clothes inside the inner barrel, so that the foam between the barrels and the foam of the clothes in the inner barrel can be rinsed, and the foam between the barrels is shaken up by the continuous rotation of the inner barrel and then drained, so as to achieve the effect of the foam being discharged after being rinsed.

[0061] During the defoaming process of the inner barrel, the water level / volume is set by timing drainage.

[0062] The second rotation speed is negatively correlated with the current water level, that is, the higher the current water level is, the lower the second rotation speed is, and the lower the current water level is, the higher the second rotation speed is.

[0063] Among them, the second rotation speed is between 140-200rpm.

[0064] The first speed is less than the second speed, and the set defoaming water level corresponding to the inner barrel running at the first speed with a set start-stop ratio is higher than the set defoaming water level corresponding to the inner barrel running at the second speed.

[0065] When the operating current does not exceed the second current preset value, it indicates that there is no residual foam in the outer barrel and the inner barrel, and normal dehydration can be performed to continue the dehydration process.

[0066] Wherein, the second current preset value is less than the first current preset value.

[0067] The amount of foam residue between the inner barrel and the outer barrel is reflected by the running current value of the driving motor. When there is more foam residue between the outer barrel and the inner barrel, defoaming is performed quickly by adding defoaming agent. When there is less foam residue between the outer barrel and the inner barrel, defoaming is performed by alternating rotation of the inner barrel and drainage. Different defoaming methods are selected according to different amounts of foam, and the defoaming method is adapted to the amount of foam, which is more suitable for the current amount of foam, thereby improving defoaming efficiency, saving costs and reducing environmental pollution.

[0068] The defoaming control method of washing equipment is mainly carried out during the dehydration process after washing and drainage are completed.

[0069] Specifically, Figure 2 As shown, defoaming control includes the following steps: S1. Start dehydration.

[0070] When dehydration starts, the driving motor drives the inner tub to rotate to the dehydration speed, water is removed from the laundry, and the drainage pipe 4 opens to start drainage.

[0071] S2. Monitor the operating current of the drive motor.

[0072] The operating current of the drive motor is monitored in real time or periodically through the current detection module.

[0073] S3, determine whether the operating current of the drive motor exceeds the first current preset value, if so, proceed to step S4, otherwise, proceed to step S5.

[0074] S4, stop dehydration and enter the first defoaming program: rinse, add defoaming agent during the rinsing process, drain after rinsing, and enter step S2 after drainage.

[0075] S5. Determine whether the operating current of the drive motor is between the first current setting value and the second current setting value. If so, proceed to step S6; otherwise, proceed to step S7.

[0076] S6, stop dehydration and enter the second defoaming control program: add water to the set defoaming water level, control the inner barrel to rotate and drain alternately to defoam, and enter step S2 after the drainage is completed.

[0077] S7: The operating current of the driving motor does not exceed the second current preset value, and the dehydration process continues.

[0078] After the dehydration is completed, rinsing is performed, and after the rinsing is completed, spin drying is performed, wherein the rinsing here is a normal rinsing process.

[0079] In some embodiments, there is a situation where the defoaming agent is forgotten to be added or the amount of defoaming agent added is insufficient. At this time, if the degree of foam residue is high, it is easy for the operating current to always exceed the first current preset value, and there is no defoaming agent to be added at this time, resulting in prolonged defoaming time and inability to defoam. In order to solve the above problem, a counting module is added to count the number of times the first defoaming control program is run. When the number of times the first defoaming control program is run exceeds the set number and the operating current exceeds the first current preset value, the second defoaming control program is entered.

[0080] Specifically, Figure 3 As shown, defoaming control includes the following steps: S1. Start dehydration.

[0081] When dehydration starts, the driving motor drives the inner tub to rotate to the dehydration speed, water is removed from the laundry, and the drainage pipe 4 opens to start drainage.

[0082] S2. Monitor the operating current of the drive motor.

[0083] The operating current of the drive motor is monitored in real time or periodically through the current detection module.

[0084] S3, determine whether the operating current of the drive motor exceeds the first current preset value, if so, proceed to step S4, otherwise, proceed to step S6.

[0085] S4, stop dehydration and enter the first defoaming program: rinse, add defoaming agent during the rinsing process, drain after rinsing, and count the number of times the first defoaming program is run after draining.

[0086] S5. Determine whether the number of operations exceeds the set number and the operation current exceeds the first current preset value. If so, proceed to step S7; otherwise, proceed to step S2.

[0087] S6, determining whether the operating current of the driving motor is between the first current setting value and the second current setting value, if so, proceeding to step S7, otherwise, proceeding to step S8.

[0088] S7, stop dehydration and enter the second defoaming control program: add water to the set defoaming water level, control the inner barrel to rotate and drain alternately to defoam, and enter step S2 after the drainage is completed.

[0089] S8. The operating current of the driving motor does not exceed the second current preset value, and the dehydration process continues.

[0090] After the dehydration is completed, rinsing is performed, and after the rinsing is completed, spin drying is performed, wherein the rinsing here is a normal rinsing process.

[0091] In some embodiments, the washing water level or the foam height is detected during the washing process. When the washing water level is higher than the first set defoaming water level or the foam height is higher than the set foam height, a defoaming agent is added some time before the end of washing, and the water is drained after the washing is finished. After the drainage is completed, the dehydration process begins. When the washing water level is higher than the first set defoaming water level or the foam height is higher than the set foam height, defoaming can be performed in advance.

[0092] Defoamers are generally added in the final balancing stage of the washing process.

[0093] Specifically, Figure 4 As shown, defoaming control includes the following steps: S1. Start washing.

[0094] S2. Fill water to the washing water level and start washing.

[0095] S3. Detect the washing water level or foam height.

[0096] In order to ensure the accuracy of the washing water level, the washing water level can be detected by a water level sensor before draining the water after washing.

[0097] In some embodiments, the washing water level may also be an inlet water level determined based on a weighing result.

[0098] The foam height is detected at a set time before the end of washing.

[0099] S4. When the washing water level is higher than the first set defoaming water level or the foam height is higher than the set foam height, proceed to step S5; otherwise, proceed to step S6.

[0100] S5. Add defoaming agent some time before the end of washing, drain the water after washing, and go to step S6 after the drainage is completed.

[0101] S6. Start dehydration.

[0102] When dehydration starts, the driving motor drives the inner tub to rotate to the dehydration speed, water is removed from the laundry, and the drainage pipe 4 opens to start drainage.

[0103] S7. Monitor the operating current of the drive motor.

[0104] The operating current of the drive motor is monitored in real time or periodically through the current detection module.

[0105] S8, determine whether the operating current of the drive motor exceeds the first current preset value, if so, proceed to step S9, otherwise, proceed to step S10.

[0106] S9, stop dehydration and enter the first defoaming program: rinse, add defoaming agent during the rinsing process, drain after rinsing, and enter step S7 after drainage.

[0107] S10, determining whether the operating current of the driving motor is between the first current setting value and the second current setting value, if so, proceeding to step S11, otherwise, proceeding to step S12.

[0108] S11, stop dehydration and enter the second defoaming control program: add water to the set defoaming water level, control the inner barrel to rotate and drain alternately to defoam, and enter step S7 after the drainage is completed.

[0109] S12: The operating current of the driving motor does not exceed the second current preset value, and the dehydration process continues.

[0110] After the dehydration is completed, rinsing is performed, and after the rinsing is completed, spin drying is performed, wherein the rinsing here is a normal rinsing process. Figure 5 In the example, the washing machine includes an outer tub 1, an inner tub 2, a driving motor 3, a drainage pipeline 4 and an internal circulation pipeline 5.

[0111] The inner tub 2 is located inside the outer tub 1 and can rotate relative to the outer tub 1. The driving motor 3 drives the inner tub 2 to rotate.

[0112] A drainage pipe 4 is connected to the bottom of the outer tub 1, and the drainage pipe 4 is used to drain water to the outside of the washing machine.

[0113] An internal circulation pipeline 5 is connected to the bottom of the outer tub 1 or the drainage pipeline 4. The internal circulation pipeline 5 is used to drain the water at the bottom of the outer tub 1 to between the inner tub 2 and the outer tub 1 to achieve internal circulation.

[0114] In some embodiments, the outlet of the inner circulation pipeline 5 is arranged between the inner tub 2 and the outer tub 1. All the water outlet of the inner circulation pipeline 5 can enter between the inner tub 2 and the outer tub 1.

[0115] Of course, the outlet of the inner circulation pipeline 5 can also be close to the inner barrel 2 or located above the inner barrel 2, and the water outlet of the inner circulation pipeline 5 can partially enter between the inner barrel 2 and the outer barrel 1, and partially enter the inner barrel 2.

[0116] In some embodiments, the outlet of the inner circulation pipeline 5 is arranged at the top of the outer tub 1. The outlet water of the inner circulation pipeline 5 can all enter between the inner tub 2 and the outer tub 1.

[0117] Of course, the outlet of the inner circulation pipeline 5 can also be set at a position higher than the inner barrel on the top of the outer barrel 1, and the water outlet of the inner circulation pipeline 5 can partially enter between the inner barrel 2 and the outer barrel 1, and partially enter the inner barrel 2.

[0118] In some embodiments, a circulation pump is provided on the inner circulation pipeline 5. When the circulation pump is working, the water at the bottom of the outer barrel 1 is lifted up to be used for washing the foam.

[0119] In a bottom drainage washing machine, the drainage pipe 4 can be controlled by a control valve to control whether to drain water.

[0120] In the upper drainage washing machine, the drainage pipe 4 also needs to be lifted by a water pump to achieve drainage, so the drainage pipe 4 also has a drainage pump.

[0121] Of course, the internal circulation pipeline 5 and the drainage pipeline 4 can share a pump, and the conduction state between the drainage pipeline 4 and the internal circulation pipeline can be controlled by a control valve.

[0122] The defoaming control method of the washing machine is as follows: in the drainage process of the second defoaming control program, the drainage pipeline and the internal circulation pipeline are drained simultaneously or alternately. When the drainage pipeline and the internal circulation pipeline are drained simultaneously or alternately, the foam between the inner tub and the outer tub is flushed and defoamed when the internal circulation pipe is drained, so as to achieve the purpose of further defoaming.

[0123] exist Figure 6 In the example of FIG. 1 , the second defoaming control process includes the following steps: S1. Add water to the set defoaming water level x.

[0124] S2. After the drainage pipeline and the internal circulation pipeline drain water to the xi water level simultaneously or alternately, stop draining.

[0125] S3, the inner barrel is operated at the first speed with a set start-stop ratio or the inner barrel is controlled to continuously operate at the second speed to perform defoaming.

[0126] S4. Determine whether drainage is completed. If so, proceed to step S5; otherwise, proceed to step S2.

[0127] S5. Dehydration.

[0128] This method can further improve the defoaming efficiency.

[0129] The complete working process of the washing machine is described below: The washing machine is started, the clothes in the washing machine are weighed, and the water level is determined according to the weighing result. The washing water level or foam height is detected. When the washing water level is higher than the first set defoaming water level or the foam height is higher than the set foam height, a defoaming agent is added some time before the end of washing, and the washing is drained after the washing is completed. After the drainage is completed, the dehydration process begins. Otherwise, the dehydration process is directly entered without adding a defoaming agent.

[0130] Start dehydration, detect the operating current of the driving motor, when the operating current exceeds the first current preset value, it means that there are more foams left between the outer barrel and the inner barrel, stop dehydration, and enter the first defoaming control program. The first defoaming control program is: rinse, add defoaming agent during the rinsing process, drain the water after the rinsing is completed, and enter the dehydration process after the drainage is completed. Count the number of operations of the first defoaming control program. When the number of operations of the first defoaming control program exceeds the set number and the operating current exceeds the first current preset value, enter the second defoaming control program. When the operating current is between the first current preset value and the second current preset value, it means that there are less foams left between the outer barrel and the inner barrel, stop dehydration, and enter the second defoaming control program. The second defoaming control program is: add water to the set defoaming water level, control the inner barrel to rotate and drain alternately for defoaming, and enter the dehydration process after the drainage is completed. In the second defoaming control program, the inner barrel rotates and drains alternately for defoaming. In a washing machine without a spray device, the inner barrel runs at the first speed with a set rotation-stop ratio, and in a washing machine with a spray device, the inner barrel runs continuously at the second speed. When the operating current does not exceed the second current preset value, the dehydration process continues until the dehydration is completed.

[0131] After the dehydration is completed, rinse is performed, and after the rinsing is completed, spin-drying is performed to end.

[0132] 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 by 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 defoaming control method for a washing device, the washing device comprising an outer tub, an inner tub and a driving motor, characterized in that: The defoaming control method is: After washing, the water is drained, and after the water is drained, the dehydration process begins; During the dehydration process, monitoring the operating current of the driving motor; When the operating current exceeds the first current preset value, the dehydration is stopped and the first defoaming control program is entered: rinsing is performed, a defoaming agent is added during the rinsing process, the water is drained after the rinsing is completed, and the dehydration process is entered after the drainage is completed; When the operating current is between the first current preset value and the second current preset value, the dehydration is stopped and the second defoaming control program is entered: water is added to the set defoaming water level, the inner barrel is controlled to rotate and drain water alternately to defoam, and the dehydration process is entered after the drainage is completed; When the operating current does not exceed the second current preset value, continuing the dehydration process; Wherein, the second current preset value is less than the first current preset value.

2. The defoaming control method for washing equipment according to claim 1, characterized in that: The method for controlling the inner barrel to rotate and defoam is: controlling the inner barrel to run at a first speed with a set start-stop ratio or controlling the inner barrel to run continuously at a second speed.

3. The defoaming control method for washing equipment according to claim 2, characterized in that: In the process of controlling the inner barrel to rotate and drain alternately to perform defoaming, the water level / volume is set by timed drainage, and the first rotation speed and the second rotation speed are both negatively correlated with the current water level.

4. The defoaming control method for washing equipment according to claim 2, characterized in that: The washing equipment includes a spray device, and the method for controlling the inner barrel to rotate and defoam is: controlling the spray device to spray water to a set defoaming water level, and controlling the inner barrel to continuously run at a second speed, wherein the first speed is less than the second speed, and the set defoaming water level corresponding to the inner barrel running at the first speed with a set start-stop ratio is higher than the set defoaming water level corresponding to the inner barrel running at the second speed.

5. The defoaming control method for washing equipment according to claim 1, characterized in that: The washing equipment comprises an internal circulation pipeline and a drainage pipeline. During the drainage process of the second defoaming control program, the drainage pipeline and the internal circulation pipeline drain water simultaneously or alternately.

6. The defoaming control method for washing equipment according to claim 1, characterized in that: The running times of the first defoaming control program are counted, and when the running times of the first defoaming control program exceeds a set number and the running current exceeds a first current preset value, the second defoaming control program is entered.

7. The defoaming control method for washing equipment according to claim 1, characterized in that: The dosage of the defoaming agent is positively correlated with the operating current.

8. The defoaming control method for washing equipment according to claim 1, characterized in that: The washing water level or foam height is detected during the washing process. When the washing water level is higher than the first set defoaming water level or the foam height is higher than the set foam height, the defoaming agent is added some time before the end of washing. After the washing is completed, the water is drained and the dehydration process begins after the drainage is completed.

9. The defoaming control method for washing equipment according to claim 1, characterized in that: During the dehydration process, the operating current of the driving motor is monitored within a set time after the dehydration starts.

10. A washing device, characterized in that: The washing equipment performs washing according to the defoaming control method according to any one of claims 1 to 9.

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