Washing control method of clothing processing equipment and clothing processing equipment

Abstract

The present invention provides a washing control method for a clothing processing device and a clothing processing device, belonging to the field of clothing processing devices. The clothing processing device has a rinsing program, the rinsing program including a live water spraying stage in which a washing tub is filled with water and drained out of the tub. The washing control method includes: obtaining a first water level parameter representing the water level in the washing tub before the live water spraying stage begins, and obtaining a second water level parameter representing the water level in the washing tub after the live water spraying stage begins, calculating the actual water level parameter difference between the first water level parameter and the second water level parameter, and determining whether the actual water level parameter difference meets a preset water level parameter difference requirement; if the actual water level parameter difference does not meet the preset water level parameter difference requirement, stopping water from entering the washing tub; if the actual water level parameter difference meets the preset water level parameter difference requirement, continuing the live water spraying stage.

Description

Technical Field

[0001] The present invention relates to the technical field of clothing processing equipment, and in particular to a washing control method for clothing processing equipment and the clothing processing equipment. Background Art

[0002] As the pace of life in modern society accelerates, people are increasingly considering the efficiency of products when choosing home appliances. In the field of clothing processing equipment, more and more products are focusing on the selling point of fast washing.

[0003] After executing the washing process, clothing processing equipment must perform a rinsing process to remove additives and other substances remaining on the clothes during the washing process using the rinsing water flow. The current rinsing process flow of clothing processing equipment is as follows: water is added to the washing drum of the clothing processing equipment to the set rinse water level, and the washing drum motor runs at a set speed and start-stop ratio to store water and rinse the clothes. The rinsing and dehydration steps are time-consuming, accounting for more than half of the time of the entire washing process, and there is a lot of invalid redundant time. Summary of the Invention

[0004] In order to overcome the problem that the washing process of clothing processing equipment in related technologies takes a long time, the embodiments of the present invention propose a washing control method for clothing processing equipment and a clothing processing equipment, which effectively reduces the rinsing time by optimizing the rinsing process and adopting an innovative rinsing scheme. During the rinsing stage, the rinsing is partially or completely replaced by a rinsing method that takes in water while draining water, which can greatly shorten the rinsing time. At the same time, the water level in the drum is detected in real time during the rinsing stage. It can also shorten the rinsing time and avoid the overflow of washing water caused by the rising water level in the drum due to poor drainage of the clothing processing equipment.

[0005] In a first aspect of embodiment 1 of the present invention, a washing control method for a clothes processing device is provided. The clothes processing device has a rinsing program, and the rinsing program includes a running water spraying stage in which water is simultaneously flowing into and draining from a washing tub. The washing control method includes:

[0006] Before the live water spraying phase begins, a first water level parameter representing the water level in the washing tub is obtained, and after the live water spraying phase begins, a second water level parameter representing the water level in the washing tub is obtained, an actual water level parameter difference between the first water level parameter and the second water level parameter is calculated, and it is determined whether the actual water level parameter difference meets a preset water level parameter difference requirement;

[0007] If the actual water level parameter difference does not meet the preset water level parameter difference requirement, the washing drum stops filling with water;

[0008] If the actual water level parameter difference meets the preset water level parameter difference requirement, the live water spraying stage will continue.

[0009] In the above technical solution, if the actual water level parameter difference does not meet the preset water level parameter difference requirement, the washing tub stops filling with water, including:

[0010] If the actual water level parameter difference calculated for n consecutive times does not meet the preset water level parameter difference requirement, or if the actual water level parameter difference does not meet the preset water level parameter difference requirement within the target time, the washing drum stops filling with water;

[0011] Otherwise, the live water spraying stage will continue;

[0012] Where n≥2.

[0013] In the above technical solution, the washing control method further includes:

[0014] During the running water spraying stage, the second water level parameter is obtained once every first preset time interval, and the actual water level parameter difference between the first water level parameter and the second water level parameter is calculated.

[0015] In the above technical solution, after the water inflow into the washing tub stops, the method further includes:

[0016] Control the washing tub to stop and drain the water in the washing tub.

[0017] In the above technical solution, controlling the washing drum to stop and draining the water in the washing drum includes:

[0018] When the washing tub is draining, obtaining a second water level parameter representing the water level in the washing tub, and determining whether the water level in the washing tub represented by the second water level parameter is greater than a static protection water level of the washing tub;

[0019] If it is determined that the water level in the washing tub represented by the second water level parameter is greater than or equal to the static protection water level of the washing tub, controlling the clothes processing device to output an alarm message;

[0020] If it is determined that the water level in the washing tub represented by the second water level parameter is lower than the static protection water level of the washing tub, the washing tub continues to drain;

[0021] The static protection water level of the washing drum is located at 1 / 3 to 2 / 3 of the height of the washing drum.

[0022] In the above technical solution, controlling the washing drum to stop and draining the water in the washing drum includes:

[0023] within a second preset time period, determining whether the water in the washing tub is drained;

[0024] If the water in the washing tub is emptied within the second preset time, the running water spraying stage continues;

[0025] If the water in the washing tub is not drained within the second preset time period, the clothes processing device is controlled to output an alarm message.

[0026] In the above technical solution, the rinsing program of the clothes processing device also includes a water storage rinsing stage in which the washing tub only fills with water but does not drain water;

[0027] The washing control method also includes:

[0028] In the running water spraying stage, if the actual water level parameter difference still does not meet the preset water level parameter difference requirement after performing m drainage operations within the second preset time period, the running water spraying stage is terminated and the clothing processing equipment is controlled to perform the water storage rinsing stage;

[0029] Where m≥2.

[0030] In the above technical solution, the washing control method further includes:

[0031] Obtain the load weight in the washing tub, and determine the size of the preset water level parameter difference according to the size of the load weight;

[0032] The size of the load weight is negatively correlated with the size of the difference in the preset water level parameters.

[0033] In the above technical solution, the clothes processing device further includes a washing program that is executed before the rinsing program;

[0034] Obtaining the load weight in the washing tub and determining the difference in the preset water level parameter according to the load weight includes:

[0035] The weight of the dry load in the washing tub before the washing program starts and the weight of the wet load in the washing tub after the washing program ends are obtained, and a preset water level parameter difference is determined according to the weight of the dry load and the weight of the wet load.

[0036] In the above technical solution, determining the preset water level parameter difference according to the weight of the dry load and the weight of the wet load includes:

[0037] Calculate the actual weight difference between the wet load weight and the dry load weight, and compare it with the preset weight difference;

[0038] If the actual weight difference is greater than or equal to the preset weight difference, determining the preset water level parameter difference as the first preset water level parameter difference;

[0039] If the actual weight difference is less than the preset weight difference, determining the preset water level parameter difference as a second preset water level parameter difference;

[0040] The first preset water level parameter difference is greater than the second preset water level parameter difference.

[0041] In the above technical solution, the first water level parameter is a first water level frequency representing the height of the water level in the washing tub, and the second water level parameter is a second water level frequency representing the height of the water level in the washing tub;

[0042] If the difference between the first water level frequency and the second water level frequency is greater than or equal to the preset water level frequency difference, the washing tub stops filling with water;

[0043] If the difference between the first water level frequency and the second water level frequency is less than the preset water level frequency difference, the live water spraying stage is continued;

[0044] The magnitude of the water level frequency is negatively correlated with the water level in the washing tub.

[0045] The second aspect of the embodiment 1 of the present invention provides a clothes processing device, which adopts the above-mentioned washing control method

[0046] In the above technical solution, the clothes processing device includes:

[0047] a washing drum, the washing drum being controllably rotatable; and

[0048] a detergent box in communication with the washing tub, the detergent box being used to dispense detergent into the washing tub; and

[0049] a water inlet communicating with the washing tub and used to supply water into the washing tub and a drain outlet used to drain water out of the washing tub; and

[0050] a water level detection device, the water level detection device obtaining a water level parameter used to characterize the water level in the washing tub; and

[0051] The controller is used to control the start and stop of the washing tub and / or the opening and closing of the water inlet and / or the opening and closing of the drain outlet according to the water level parameters.

[0052] In the above technical solution, the water inlet is provided at the clothing inlet of the clothing processing device, and a sprayer is provided at the water inlet;

[0053] The sprayer is used to spray the clothes in the washing tub.

[0054] In the above technical solution, the clothing processing device is a drum-type washing machine or a drum-type washer-dryer.

[0055] The difference between Example 2 of the present invention and Example 1 is that the first water level parameter in Example 2 of the present invention is a first water level value representing the height of the water level in the washing tub, and the second water level parameter is a second water level value representing the height of the water level in the washing tub;

[0056] If the absolute value of the difference between the first water level value and the second water level value is greater than or equal to the preset water level value difference, the washing tub stops filling with water;

[0057] If the absolute value of the difference between the first water level value and the second water level value is less than the preset water level value difference, the running water spraying stage is continued;

[0058] The water level value is positively correlated with the water level in the washing tub.

[0059] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0060] An embodiment of the present invention proposes a washing control method for a clothing processing device and a clothing processing device, which effectively reduces the rinsing time by optimizing the rinsing process and adopting an innovative rinsing scheme. During the rinsing stage, the rinsing is partially or completely replaced by a rinsing method that takes in water while draining water, which can greatly shorten the rinsing time. At the same time, the water level in the drum is detected in real time during the rinsing stage to avoid the overflow of washing water caused by the rising water level in the drum due to poor drainage of the clothing processing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0062] Figure 1 The control flow of the clothes processing device in the embodiment of the present invention when performing the rinsing program Figure 1 ;

[0063] Figure 2 The control flow of the clothes processing device in the embodiment of the present invention when performing the rinsing program Figure 2 ;

[0064] Figure 3 The water level fluctuation in the washing tub under normal conditions in an embodiment of the present invention, where the horizontal axis represents time and the vertical axis represents water level;

[0065] Figure 4 The water level fluctuation in the washing tub under abnormal conditions in an embodiment of the present invention, where the horizontal axis represents time and the vertical axis represents water level;

[0066] Figure 5 Schematic diagram of the structure of the clothes processing device in an embodiment of the present invention when performing a rinsing program.

[0067] Among them: 100-washing drum; 200-water inlet; 300-drain outlet; 400-clothing inlet; 500-sprayer. DETAILED DESCRIPTION

[0068] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, like numbers in different figures represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present invention as detailed in the appended claims.

[0069] Currently, existing clothing processing equipment takes a long time in the washing process. The embodiments of the present invention provide a washing control method and clothing processing equipment for clothing processing equipment, which effectively reduces the rinsing time by optimizing the rinsing process and adopting an innovative rinsing solution. During the rinsing stage, a rinsing method that partially or completely replaces the rinsing process by a rinsing method that fills water while draining water can greatly shorten the rinsing time. At the same time, the water level in the drum is detected in real time during the rinsing stage. It can also avoid overflow of washing water caused by rising water level in the drum due to poor drainage of the clothing processing equipment while shortening the rinsing time.

[0070] The following is combined with Figure 1 -Attached Figure 5 The technical solution of this embodiment is described in detail. The following implementation methods and embodiments can be combined with each other unless there is any conflict.

[0071] Example 1

[0072] like Figure 1-Figure 5 As shown, in a first aspect of this embodiment 1, a washing control method for a clothes processing device is provided. The clothes processing device has a rinsing program. The rinsing program includes a running water spraying stage in which water is flowing into and draining from a washing tub. The washing control method includes:

[0073] Before the live water spraying phase begins, a first water level parameter representing the water level in the washing tub is obtained, and after the live water spraying phase begins, a second water level parameter representing the water level in the washing tub is obtained, an actual water level parameter difference between the first water level parameter and the second water level parameter is calculated, and it is determined whether the actual water level parameter difference meets a preset water level parameter difference requirement;

[0074] If the actual water level parameter difference does not meet the preset water level parameter difference requirement, the washing drum stops filling with water;

[0075] If the actual water level parameter difference meets the preset water level parameter difference requirement, the live water spraying stage will continue.

[0076] In the embodiment of the present invention, the rinsing time is effectively reduced by optimizing the rinsing process and adopting an innovative rinsing solution. During the rinsing stage, the rinsing is partially or completely replaced by a rinsing method that takes in water while draining water, which can greatly shorten the rinsing time.

[0077] It is worth noting that the detergent box and the washing tub of the clothes processing equipment are connected. Due to the influence of the motor rotation, the water level in the washing tub will fluctuate within a certain range {such as Figure 2 As shown}, while in abnormal cases {as Figure 3 For example, problems such as the drain pump of the washing tub being clogged, foam in the washing tub, and insufficient drainage lift will cause poor drainage, and the water in the washing tub cannot be discharged in time, causing the water level in the washing tub to continue to rise. Moreover, since the washing tub is in a continuous rotation state during the rinsing program, the water in the washing tub will overflow from the detergent box under the action of the rotation of the washing tub, which will cause certain safety hazards.

[0078] Therefore, in the embodiment of the present invention, by detecting the water level in the drum in real time during the rinsing stage, it is possible to shorten the rinsing time while avoiding the overflow of washing water caused by the rising water level in the drum due to poor drainage of the clothing processing equipment.

[0079] In some embodiments, if the actual water level parameter difference does not meet the preset water level parameter difference requirement, the washing tub stops supplying water, including:

[0080] If the actual water level parameter difference calculated for n consecutive times does not meet the preset water level parameter difference requirement, or if the actual water level parameter difference does not meet the preset water level parameter difference requirement within the target time, the washing drum stops filling with water;

[0081] Otherwise, the live water spraying stage will continue;

[0082] Where n≥2.

[0083] Preferably, n is set to 4. That is, if the actual water level parameter difference calculated four times does not meet the preset water level parameter difference requirement, water inflow to the washing tub is stopped to prevent the water level in the washing tub from continuing to rise. If at least one of the four consecutive calculated actual water level parameter differences meets the preset water level parameter difference requirement, the running water spray phase continues.

[0084] In some embodiments, the washing control method further comprises:

[0085] During the running water spraying stage, the second water level parameter is obtained once every first preset time interval, and the actual water level parameter difference between the first water level parameter and the second water level parameter is calculated.

[0086] Preferably, the first preset duration is 1 second, meaning that the second water level parameter representing the water level in the washing tub is obtained every second. Based on the above, if the actual water level parameter difference calculated for four consecutive seconds does not meet the preset water level parameter difference requirement, water inflow to the washing tub is stopped to prevent the water level in the washing tub from continuing to rise. If at least one of the actual water level parameter differences calculated for four consecutive seconds meets the preset water level parameter difference requirement, the running water spray phase continues.

[0087] Of course, in some alternative implementations, the value of n and the value of the first preset time length may also be other values, but relatively preferably, n is 2 and the first preset time length is 1s.

[0088] In some embodiments, after the water inflow to the washing tub stops, the washing control method further includes:

[0089] Control the washing tub to stop and drain the water in the washing tub.

[0090] That is, when it is determined that the water level in the washing tub fluctuates abnormally, the washing tub is controlled to stop and the water in the washing tub is drained to eliminate the hidden danger of overflow to the greatest extent.

[0091] In some embodiments, controlling the washing tub to stop and draining the water in the washing tub includes:

[0092] When the washing tub is draining, obtaining a second water level parameter representing the water level in the washing tub, and determining whether the water level in the washing tub represented by the second water level parameter is greater than a static protection water level of the washing tub;

[0093] If it is determined that the water level in the washing tub represented by the second water level parameter is greater than or equal to the static protection water level of the washing tub, controlling the clothes processing device to output an alarm message;

[0094] If it is determined that the water level in the washing tub represented by the second water level parameter is lower than the static protection water level of the washing tub, the washing tub continues to drain;

[0095] The static protection water level of the washing drum is located at 1 / 3 to 2 / 3 of the height of the washing drum.

[0096] That is, in order to avoid overflow during the drainage process, the clothes processing device in the embodiment of the present invention will continuously judge the water level in the washing tub to avoid the water level in the washing tub exceeding the static protection water level during the drainage process and causing overflow.

[0097] It should be noted that the reason why the embodiment of the present invention needs to determine whether the water level in the washing tub exceeds the static protection water level of the washing tub during the drainage process is to avoid water level abnormalities caused by continuous water inflow due to a water inlet valve failure. The overflow here is not an actual overflow, but a set static overflow water level SW1.

[0098] That is, the above-mentioned static protection water level position is at 1 / 3 to 2 / 3 of the height direction of the washing tub. If the water level in the washing tub is higher than this position, the pressure generated by the washing tub may cause the door lock of the washing tub to open, thereby causing water overflow.

[0099] Preferably, the above-mentioned static protection water level is at the half position in the height direction of the washing drum. Of course, the "half position" mentioned here does not require to be exactly at the half position. If the upper and lower errors are within 1 cm, it can be considered to be at the half position in the height direction of the washing drum.

[0100] In some embodiments, controlling the washing tub to stop and draining the water in the washing tub includes:

[0101] within a second preset time period, determining whether the water in the washing tub is drained;

[0102] If the water in the washing tub is emptied within the second preset time, the running water spraying stage continues;

[0103] If the water in the washing tub is not drained within the second preset time period, the clothes processing device is controlled to output an alarm message, wherein the alarm message may be a buzzer sound emitted by the clothes processing device.

[0104] That is, if the washing tub in this embodiment of the present invention is not completely drained within a preset time period, the laundry processing apparatus is deemed to have a drainage failure. This can, to a certain extent, prevent overflowing caused by poor drainage due to a clogged drain pump. If the washing tub is completely drained within the preset time period, the rinse stage continues.

[0105] In some embodiments, the rinsing program of the laundry treatment apparatus further includes a water storage rinsing stage in which water is only introduced into the washing tub but not discharged;

[0106] The washing control method further comprises:

[0107] In the running water spraying stage, if the actual water level parameter difference still does not meet the preset water level parameter difference requirement after performing m drainage operations within the second preset time period, the running water spraying stage is terminated and the clothing processing equipment is controlled to perform the water storage rinsing stage;

[0108] Where m≥2.

[0109] That is, when continuing to execute the above-mentioned rinsing stage, the problem of abnormal water level in the washing drum occurs again, and this abnormal problem occurs repeatedly, it is determined that the clothing processing equipment at this time has a problem of overflow due to poor drainage caused by foam in the washing drum or insufficient lift of the drainage pump in the state of spraying and discharging, which indirectly reflects that the current state is not suitable for live water rinsing. Therefore, the program needs to be switched to conventional water storage rinsing, and after the water storage rinsing is completed, it enters the final dehydration until the program ends.

[0110] In some embodiments, the washing control method further comprises:

[0111] Obtain the load weight in the washing tub, and determine the size of the preset water level parameter difference according to the size of the load weight;

[0112] The size of the load weight is negatively correlated with the size of the difference in the preset water level parameters.

[0113] That is, affected by the load in the drum, loads of different weights have different effects on water level fluctuations. Because the load in the drum needs to be weighed and differentiated before the washing process begins, the load level is divided into four levels: very little, little, medium, and more. The preset water level difference corresponding to the load level division is used as the judgment condition.

[0114] Combined with actual test conditions, the greater the load, the greater the probability of overflow. Therefore, in the setting of the preset water level difference A, as the load level increases, the preset water level difference A gradually decreases to avoid overflow during live water spraying as much as possible.

[0115] Load Level Very few few middle many Water level difference A A1 A2 A3 A4

[0116] In some embodiments, the laundry treatment apparatus further comprises a washing program performed prior to the rinsing program;

[0117] Obtaining the load weight in the washing tub and determining the difference in the preset water level parameter according to the load weight includes:

[0118] The weight of the dry load in the washing tub before the washing program starts and the weight of the wet load in the washing tub after the washing program ends are obtained, and a preset water level parameter difference is determined according to the weight of the dry load and the weight of the wet load.

[0119] In this embodiment, the weight of the dry load before washing and the weight of the wet load after washing are obtained, and the specific preset water level difference is determined based on the combined weight values ​​of the two. The advantage is that this determination method fully takes into account the problem that different clothing materials have different water absorption properties, and dry loads with different water absorption properties but the same weight will have different volume changes after absorbing the same amount of water.

[0120] For example, when clothes with strong water absorption are added into the washing drum, although the clothes are heavy, due to their strong water absorption, their volume will not increase after absorbing water, but will decrease on the contrary.

[0121] Therefore, when rinsing such clothes, if you only pay attention to the weight of the load and not the water absorbency of the load, the preset water level difference automatically determined by the system will be very small, which may lead to misjudgment. That is, there is no risk of overflow when rinsing such clothes, but the washing machine will judge that there is a risk of overflow, resulting in the failure of the rinsing program.

[0122] It is worth noting that the reason why the clothing processing device in this embodiment overflows is that the load volume in the washing drum is too large, that is, the large volume of clothing causes the water level to rise, thereby causing overflow.

[0123] Based on this, in this embodiment, the preset water level difference is determined by obtaining the weight of the dry load and the weight of the wet load, which can avoid misjudgment of the clothes processing device during the rinsing process and abnormal termination of the rinsing process.

[0124] Specifically, the preset water level parameter difference is determined according to the weight of the dry load and the weight of the wet load, including:

[0125] Calculate the actual weight difference between the wet load weight and the dry load weight, and compare it with the preset weight difference;

[0126] If the actual weight difference is greater than or equal to the preset weight difference, determining the preset water level parameter difference as the first preset water level parameter difference;

[0127] If the actual weight difference is less than the preset weight difference, determining the preset water level parameter difference as a second preset water level parameter difference;

[0128] The first preset water level parameter difference is greater than the second preset water level parameter difference.

[0129] In this embodiment, the water absorption capacity of the load can be determined by calculating the actual weight difference between the wet load weight and the dry load weight.

[0130] Specifically, if the actual weight difference between the wet load and the dry load is greater than or equal to the preset weight difference, this indicates that the load has increased significantly in weight after transitioning from a dry load to a wet load, indicating that the load is highly absorbent. Therefore, although the load in the washing tub is heavy, its strong water absorption properties cause it to shrink in volume after absorbing a large amount of water, resulting in more excess space within the tub. Based on this, it can be determined that the risk of overflow when detaching such a load is low, and therefore the preset water level difference can be set to a larger value. This means that even large fluctuations in the water level within the tub will not cause overflow.

[0131] Conversely, if the actual weight difference between the wet load and the dry load is less than the preset weight difference, this indicates that the load has not increased significantly in weight after transitioning from a dry load to a wet load, reflecting that the load is not very absorbent. Therefore, if the load is very heavy, there will be less excess space in the washing tub. Based on this, it can be determined that the risk of overflowing is higher when floating such a load, and therefore the preset water level difference can be set to a smaller value. In other words, large fluctuations in the water level in the washing tub will cause overflowing.

[0132] In some embodiments, the first water level parameter is a first water level frequency representing the height of the water level in the washing tub, and the second water level parameter is a second water level frequency representing the height of the water level in the washing tub;

[0133] In this case, if the difference between the first water level frequency and the second water level frequency is greater than or equal to the preset water level frequency difference, the washing tub stops filling with water;

[0134] In this case, if the difference between the first water level frequency and the second water level frequency is less than the preset water level frequency difference, the active water spraying stage is continued;

[0135] The magnitude of the water level frequency is negatively correlated with the water level in the washing tub.

[0136] It is worth noting that the water level frequency value is inversely proportional to the input water pressure value, that is, the higher the water level, the greater the water pressure, and the lower the water level frequency value. The water level frequency refers to a value output by the water level sensor for the current water level.

[0137] Therefore, the above-mentioned first water level frequency value is greater than the second water level frequency value. Specifically, if the difference between the first water level frequency and the second water level frequency is greater than or equal to the preset water level frequency difference, it means that the water level fluctuation in the washing drum is large at this time, and it is necessary to stop the washing drum from continuing to add water and drain the water in the washing drum. If the difference between the first water level frequency and the second water level frequency is less than the preset water level frequency difference, it means that the water level fluctuation in the washing drum is not large at this time, and the rinsing stage can continue.

[0138] In order to more clearly understand the working principle of the clothes processing device in the embodiment of the present application when performing the rinsing stage, the following is combined with Figure 2 To explain in detail:

[0139] At the beginning of the drifting stage, the water level SW0 is detected, and during the drifting process, the SW x During the entire rinse phase, the water level differential is continuously checked to see if it has reached the programmed value. It's worth noting that, under normal circumstances, the washing tub should be at the empty tub level before the live water rinse phase begins. However, due to the influence of foam, the water level may not be drained to the empty tub level (the pressure generated by foam in the tub is equivalent to partial water). Therefore, to eliminate the influence of other factors, the water level is tested before the live water rinse phase begins, and the water level differential is used as a judgment.

[0140] Affected by the load in the washing drum, loads of different weights have different effects on water level fluctuations. Therefore, before the washing process begins, the load in the washing drum needs to be weighed and differentiated. The load level is divided into four levels: very low, low, medium, and high. The water level difference corresponding to the load level is used as the judgment condition.

[0141] Combined with actual test conditions, the greater the load, the greater the probability of overflow. Therefore, in the setting of the water level difference A, as the load level increases, the water level difference A gradually decreases to avoid overflow during live water spraying as much as possible.

[0142]

[0143] If SW0-SW is not detected for 4 seconds x ≥A, after the rinsing is completed, it will enter the final dehydration until the program ends;

[0144] If SW0-SW is detected for 4 seconds x ≥A, the sprinkler valve stops feeding water, the motor stops rotating, and the drainage pump starts draining water. In particular, in order to avoid overflow during this process, the water level should be lower than the static protection water level, that is, the water level frequency SW x≥SW1. During the drain pump startup phase, the program checks whether the water level in the washing tub has reached the empty tub level, i.e., determines whether the water in the washing tub has been drained. If the water fails to reach the empty tub level within the preset time period, a drain timeout fault condition occurs. Early detection of a drain timeout fault can, to a certain extent, avoid overflowing caused by poor drainage due to a clogged drain pump. If the water can be drained to the empty tub level within the preset time period, the program returns to the rinse phase and restarts. If this logic control is repeated three times cumulatively, it is determined to be overflowing caused by poor drainage due to foam in the tub or insufficient lift of the drain pump while spraying and draining. This indirectly indicates that the current state is not suitable for live water rinsing, so the program needs to switch to conventional water storage rinsing. After the water storage rinsing, the program enters the final spin cycle until the program ends.

[0145] It is worth noting that, preferably, when the water in the washing tub is drained within a preset time period and then returns to the rinsing stage and starts running again, the running time of the rinsing stage is not recalculated, but accumulated. Of course, the time consumed in the drainage process does not belong to the rinsing stage time.

[0146] The second aspect of this embodiment further provides a clothing processing device, which adopts the washing control method provided by the first aspect of this embodiment.

[0147] In some embodiments, a laundry treating apparatus comprises:

[0148] a washing tub 100, the washing tub 100 being controllably rotatable; and

[0149] a detergent box connected to the washing tub, the detergent box being used to put detergent into the washing tub 100; and

[0150] a water inlet 200 communicating with the washing tub 100 and for supplying water into the washing tub 100 and a water outlet 300 for discharging water out of the washing tub 100; and

[0151] A water level detection device, which obtains a water level parameter for characterizing the water level in the washing tub 100; and

[0152] The controller is used to control the start and stop of the washing tub 100 and / or the opening and closing of the water inlet 200 and / or the opening and closing of the drain outlet 300 according to the water level parameters.

[0153] In some embodiments, the water inlet 200 is provided at the clothing loading port 400 of the clothing processing device, and a sprayer 500 is provided at the water inlet 200;

[0154] The sprayer 500 is used to spray the clothes in the washing tub 100 .

[0155] In some embodiments, the above-mentioned clothing processing device is preferably a drum washing machine or a drum washer-dryer.

[0156] Example 2

[0157] The difference between this embodiment and embodiment 1 is that the first water level parameter in this embodiment is a first water level value representing the height of the water level in the washing tub, and the second water level parameter is a second water level value representing the height of the water level in the washing tub;

[0158] In this case, if the absolute value of the difference between the first water level value and the second water level value is greater than or equal to the preset water level value difference, the washing tub stops filling with water;

[0159] In this case, if the absolute value of the difference between the first water level value and the second water level value is less than the preset water level value difference, the live water spraying stage is continued;

[0160] The water level value is positively correlated with the water level in the washing tub.

[0161] That is, this embodiment directly adopts the method of obtaining the water level value difference to characterize the water level fluctuation in the washing drum. However, compared with Example 1, the water level value is affected by more factors, which may be affected by the load type, load amount and foam amount. The water level frequency value can avoid the influence of related factors to a certain extent, making the detection more accurate.

[0162] Example 3

[0163] The difference between this embodiment and embodiment 1 is that in this embodiment, it is possible to directly determine whether the water level value in the washing drum exceeds the preset water level value, thereby determining whether there is a risk of overflow in the clothing processing device. However, as mentioned above, this judgment method is also affected by many factors, which may be affected by the load type, load amount and foam amount. The water level frequency value can avoid the influence of related factors to a certain extent, making the detection more accurate.

[0164] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow from the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0165] It should be understood that the present invention is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A washing control method for a clothes processing device, characterized in that: The laundry treatment device has a rinsing program, which includes a live water spraying stage in which water is flowing into and out of the washing tub. The washing control method includes: Before the live water spraying phase begins, a first water level parameter representing the water level in the washing tub is obtained, and after the live water spraying phase begins, a second water level parameter representing the water level in the washing tub is obtained, an actual water level parameter difference between the first water level parameter and the second water level parameter is calculated, and it is determined whether the actual water level parameter difference meets a preset water level parameter difference requirement; If the actual water level parameter difference does not meet the preset water level parameter difference requirement, the washing drum stops filling with water; If the actual water level parameter difference meets the preset water level parameter difference requirement, the live water spraying stage will continue; The washing control method further comprises: Obtain the load weight in the washing tub, and determine the size of the preset water level parameter difference according to the size of the load weight; The size of the load weight is negatively correlated with the size of the preset water level parameter difference; The laundry treatment device further includes a washing program executed prior to the rinsing program; The step of obtaining the load weight in the washing tub and determining the preset water level parameter difference value according to the load weight includes: The weight of the dry load in the washing tub before the washing program starts and the weight of the wet load in the washing tub after the washing program ends are obtained, and a preset water level parameter difference is determined according to the weight of the dry load and the weight of the wet load.

2. The washing control method according to claim 1, characterized in that: If the actual water level parameter difference does not meet the preset water level parameter difference requirement, the washing tub stops supplying water, including: If the actual water level parameter difference calculated for n consecutive times does not meet the preset water level parameter difference requirement, or if the actual water level parameter difference does not meet the preset water level parameter difference requirement within the target time, the washing drum stops filling with water; Otherwise, the live water spraying stage will continue; Where n≥2.

3. The washing control method according to claim 2, characterized in that: The washing control method further comprises: During the running water spraying stage, the second water level parameter is obtained once every first preset time interval, and the actual water level parameter difference between the first water level parameter and the second water level parameter is calculated.

4. The washing control method according to any one of claims 1 to 3, characterized in that: After the water inflow to the washing tub stops, the washing control method further includes: Control the washing tub to stop and drain the water in the washing tub.

5. The washing control method according to claim 4, characterized in that: The method of controlling the washing tub to stop and draining the water in the washing tub includes: When the washing tub is draining, obtaining a second water level parameter representing the water level in the washing tub, and determining whether the water level in the washing tub represented by the second water level parameter is greater than a static protection water level of the washing tub; If it is determined that the water level in the washing tub represented by the second water level parameter is greater than or equal to the static protection water level of the washing tub, controlling the clothes processing device to output an alarm message; If it is determined that the water level in the washing tub represented by the second water level parameter is lower than the static protection water level of the washing tub, the washing tub continues to drain; The static protection water level of the washing drum is located at 1 / 3 to 2 / 3 of the height of the washing drum.

6. The washing control method according to claim 4, characterized in that: The method of controlling the washing tub to stop and draining the water in the washing tub includes: within a second preset time period, determining whether the water in the washing tub is drained; If the water in the washing tub is emptied within the second preset time, the running water spraying stage continues; If the water in the washing tub is not drained within the second preset time period, the clothes processing device is controlled to output an alarm message.

7. The washing control method according to claim 6, characterized in that: The rinsing program of the laundry treatment device also includes a water storage rinsing stage in which the washing tub only fills with water but does not drain the water; The washing control method further comprises: In the running water spraying stage, if the actual water level parameter difference still does not meet the preset water level parameter difference requirement after performing m drainage operations within the second preset time period, the running water spraying stage is terminated and the clothing processing equipment is controlled to perform the water storage rinsing stage; Where m≥2.

8. The washing control method according to claim 1, characterized in that: The step of determining the preset water level parameter difference according to the weight of the dry load and the weight of the wet load includes: Calculate the actual weight difference between the wet load weight and the dry load weight, and compare it with the preset weight difference; If the actual weight difference is greater than or equal to the preset weight difference, determining the preset water level parameter difference as the first preset water level parameter difference; If the actual weight difference is less than the preset weight difference, determining the preset water level parameter difference as a second preset water level parameter difference; The first preset water level parameter difference is greater than the second preset water level parameter difference.

9. The washing control method according to any one of claims 1 to 3, characterized in that: The first water level parameter is a first water level frequency representing the height of the water level in the washing tub, and the second water level parameter is a second water level frequency representing the height of the water level in the washing tub; If the difference between the first water level frequency and the second water level frequency is greater than or equal to the preset water level frequency difference, the washing tub stops filling with water; If the difference between the first water level frequency and the second water level frequency is less than the preset water level frequency difference, the live water spraying stage is continued; The magnitude of the water level frequency is negatively correlated with the water level in the washing tub.

10. The washing control method according to any one of claims 1 to 3, characterized in that: The first water level parameter is a first water level value representing the height of the water level in the washing tub, and the second water level parameter is a second water level value representing the height of the water level in the washing tub; If the absolute value of the difference between the first water level value and the second water level value is greater than or equal to the preset water level value difference, the washing tub stops filling with water; If the absolute value of the difference between the first water level value and the second water level value is less than the preset water level value difference, the running water spraying stage is continued; The water level value is positively correlated with the water level in the washing tub.

11. A clothes processing device, characterized in that: The washing control method according to any one of claims 1 to 10 is adopted.

12. The clothes processing device according to claim 11, characterized in that: The laundry processing device comprises: a washing tub (100), wherein the washing tub (100) can be controlled to rotate; and a detergent box in communication with the washing tub, the detergent box being used to put detergent into the washing tub (100); and a water inlet (200) communicating with the washing tub (100) and used for introducing water into the washing tub (100), and a water outlet (300) used for discharging water out of the washing tub (100); and A water level detection device, the water level detection device acquiring a water level parameter for characterizing the water level in the washing tub (100); and A controller is used to control the start and stop of the washing tub (100) and / or the opening and closing of the water inlet (200) and / or the opening and closing of the drain outlet (300) according to the water level parameter.

13. The clothes treating device according to claim 12, characterized in that: The water inlet (200) is provided at the clothing loading port (400) of the clothing processing equipment, and a sprayer (500) is provided at the water inlet (200); The sprayer (500) is used to spray the clothes in the washing tub (100).

14. The clothes treating apparatus according to claim 11, characterized in that: The clothing processing device is a drum-type washing machine or a drum-type washer-dryer.

Images