A control method of a laundry treating apparatus

Abstract

The application discloses a control method of a clothes processing device, belongs to the field of fabric processing, and solves the problem that solid detergents and liquid detergents cannot be simultaneously applied. The technical solution for solving the problem is that a controller controls water inlet of a second water inlet pipeline to form a mixed liquid in a detergent box, water inlet of a first water inlet pipeline sequentially includes a pre-inlet stage, a first water inlet stage and a second water inlet stage in time sequence, water inlet of the first water inlet pipeline and water inlet of the second water inlet pipeline are not in sequence, if the duration of the pre-inlet stage is 0, the duration of the second water inlet stage is greater than 0, if the duration of the pre-inlet stage is greater than 0, the duration of the second water inlet stage is 0 or greater than 0, and the starting time of the first water inlet stage is later than the starting time of water inlet of the second water inlet pipeline. The application is mainly used for fabric processing, can simultaneously apply solid detergents and liquid detergents, and can realize quantitative use of detergents.

Description

Technical Field

[0001] This invention relates to the treatment of textiles, and in particular to a control method for a garment treatment device. Background Technology

[0002] The prior art CN104178975A discloses an automatic additive dispensing washing machine and its method. The washing machine includes a water inlet valve, a washing tub, and at least one container for holding additives. A Venturi tube is provided in the washing water inlet channel between the water inlet valve and the washing tub, which can generate negative pressure by water flow. Corresponding to the negative pressure area, a liquid extraction port is provided, which is connected to the container and uses negative pressure to draw additives into the washing water channel. A metering device for detecting the amount of additive dispensed and an additive control valve for controlling the connection and disconnection between the metering device and the container are provided between the liquid extraction port and the container. Since the additive is extracted using a Venturi tube, the additive must be a liquid and solid additives, such as laundry detergent, cannot be used. To achieve detergent dispensing, prior art CN106319874A discloses a detergent dispenser for a washing machine and a washing machine having the same. The detergent dispenser includes: an upper body with a detergent dispensing port, an upper water inlet, and an upper liquid outlet; a lower body located at the bottom of the upper body, with a lower water inlet and a lower liquid outlet; and a lower water inlet pipe, which is a Venturi tube connected to both the upper liquid outlet and the lower water inlet. In this prior art, the upper liquid outlet 130 is located at the bottom of the upper body, and the liquid in the upper body flows naturally into the lower water inlet pipe 300 due to gravity. Therefore, it is impossible to directly dispense liquid detergent, and regardless of the amount of detergent added, once liquid is formed, it will naturally flow into the lower water inlet pipe 300, making it difficult to control the quantitative dispensing of the detergent solution. Summary of the Invention

[0003] The purpose of this invention is to provide a control method for a garment processing device that can simultaneously use both solid and liquid detergents and can achieve quantitative application of detergents.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a control method for a clothing processing device, the clothing processing device comprising a controller, a water inlet assembly, a detergent box, and a washing tub, the water inlet assembly comprising a first water inlet pipe for supplying water to the washing tub and a second water inlet pipe for supplying water to dissolve detergent, characterized in that the detergent box is provided with a dispensing box for dispensing detergent, the bottom of the dispensing box is provided with a liquid outlet for discharging liquid into the detergent box, the first water inlet pipe is provided with a negative pressure extractor, the extraction interface of the negative pressure extractor being connected to the detergent box, the control method comprising the following: the controller controls the second water inlet pipe to supply water, so that a mixed liquid is formed in the detergent box, and controls the first water inlet pipe to supply water, the first water inlet... The water inlet pipeline includes, in chronological order, a pre-inlet stage, a first inlet stage, and a second inlet stage. The pre-inlet stage involves water entering the washing tub. The first inlet stage involves extracting the mixed liquid from the detergent dispenser using a negative pressure extractor and delivering it to the washing tub. The second inlet stage involves water entering the washing tub to a predetermined water level. The order of water entering the first and second inlet pipelines is not important. The duration of the pre-inlet stage is 0 or greater than 0. If the duration of the pre-inlet stage is 0, the duration of the second inlet stage is greater than 0. If the duration of the pre-inlet stage is greater than 0, the duration of the second inlet stage is 0 or greater than 0. The start time of the first inlet stage is later than the start time of the second inlet pipeline.

[0005] Furthermore, the unit time flow rate of the first water inlet pipe is Q1, the unit time flow rate of the second water inlet pipe is Q2, the suction ratio of the negative pressure extractor is P, the time of the first water inlet pipe in the first water inlet stage is T1, the control time of the second water inlet pipe is T2, T1=(T2×Q2)×P / Q1, and the controller controls the duration of the first water inlet stage according to the water inlet time of the second water inlet pipe.

[0006] Furthermore, the water intake of the second water inlet pipe is completed before the water intake of the first water inlet pipe begins; or, the water intake of the second water inlet pipe is completed after the water intake of the first water inlet pipe begins and before the end of the first water intake stage.

[0007] Furthermore, after the first water intake stage ends, the controller obtains the remaining liquid volume in the detergent box. If the remaining liquid volume exceeds the set volume threshold, the number of records is incremented by 1. When the number of records reaches the set number threshold, the suction ratio of the negative pressure extractor is calibrated and updated in the controller. The controller controls the water intake time of the first water intake stage according to the calibrated suction ratio during the next wash.

[0008] Furthermore, if the remaining liquid volume exceeds the set volume threshold, the controller controls the first water inlet pipe to continue supplying water to completely drain the remaining liquid from the detergent dispenser.

[0009] Furthermore, after the remaining liquid in the detergent dispenser is completely sucked out, the controller records the duration t of continued water intake through the first water inlet pipe. When the number of records reaches a set threshold, if the duration t does not increase sequentially according to the recorded time, the controller calculates the average value t of the duration t. 均 The suction ratio of the negative pressure extractor is calibrated according to the following formula, P. 校准 =(T1+t) 均 If the duration t increases sequentially according to the recorded time, then the duration t of the last recorded time is selected. The suction ratio of the negative pressure extractor is calibrated according to the following formula: P × Q1 / (T2 × Q2). 校准 = (T1+t)×Q1 / (T2×Q2).

[0010] Furthermore, the water inlet time of the second water inlet pipe is determined based on the amount of detergent required to complete this washing process.

[0011] Furthermore, the controller acquires the amount of clothes the user puts into the washing tub, calculates the washing dosage required for the washing process based on the amount of clothes, then determines the water inlet time of the second water inlet pipe based on the calculated washing dosage, and then determines the duration of the first water inlet stage based on the water inlet time of the second water inlet pipe.

[0012] Furthermore, the detergent is a liquid detergent, and the laundry treatment equipment also includes an automatic dispenser that automatically dispenses detergent into the dispensing box, and the controller controls the automatic dispenser to dispense the required amount of detergent according to the amount of laundry; or, the detergent is a solid detergent, and the dispensing box has a first position for the user to dispense detergent from outside the detergent box and a second position for receiving water from the second water inlet pipe inside the detergent box, and the controller prompts the user to dispense the required amount of detergent according to the amount of laundry.

[0013] Furthermore, the detergent dispenser is equipped with a liquid level detector, which sends a liquid level signal of the detergent dispenser to the controller. After the liquid level of the detergent dispenser reaches the set liquid level, the controller controls the first water inlet pipe to start the first water inlet stage; and / or, the outlet of the dispensing box is positioned facing and close to the inner wall of the detergent dispenser, so that the mixed liquid flows downward along the inner wall of the detergent dispenser; and / or, the second water inlet pipe only supplies water to the dispensing box to avoid impacting the liquid in the detergent dispenser and causing excessive foaming.

[0014] After adopting the above technical solution, the present invention has the following advantages: By controlling the second water inlet pipe to separately introduce water to form a mixed liquid in the detergent box, the concentration of the mixed liquid is uniform and controllable. Compared with the method of directly adding detergent to the washing tub, it can effectively avoid damage to the clothes caused by excessively concentrated detergent coming into contact with them. Compared with the method of using a venturi tube to extract detergent for mixing, the present invention first forms a mixed liquid, and then uses a negative pressure extractor to extract the mixed liquid into the first water inlet pipe and deliver it to the washing tub. Both solid and liquid detergents can be used. After two mixing processes, the detergent is more evenly diluted by water. After the mixed liquid enters the washing tub, it mixes more evenly with the clothes to be washed, which is conducive to improving the stain removal and cleaning effect. The second water inlet pipe and the first water inlet pipe are controlled separately for water intake, and the mixed liquid can be made again according to actual needs, avoiding the mixed liquid from staying in the detergent box for too long and producing odors. This invention divides the water intake of the first water inlet pipe into three stages: a pre-inlet stage, a first water inlet stage, and a second water inlet stage. The duration of the first water inlet stage is determined based on the amount of detergent needed, enabling quantitative use of detergent. The pre-inlet stage and the second water inlet stage can be selected or both can be performed according to actual needs. With a pre-inlet stage, the clothes can be wetted in advance, which is beneficial for the clothes to mix evenly with the detergent later. Without a pre-inlet stage, the time for the detergent to mix with the clothes can be increased, which is also beneficial for the clothes to mix evenly with the detergent. With a second water inlet stage, firstly, it can ensure that there is no detergent residue in the first water inlet pipe, and secondly, it can also facilitate the foaming of the detergent solution in the washing tub, which can improve the stain removal and cleaning effect. The start time of the first water inlet stage is later than the start time of the second water inlet pipe, ensuring that the mixed liquid is extracted when the negative pressure extractor is working, which can avoid the negative pressure extractor from sucking dry. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram (a) of a garment processing device according to the present invention;

[0017] Figure 2 This is a schematic diagram (II) of a garment processing device according to the present invention. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0020] It should be understood that in the various embodiments of the present invention, the number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0021] It should be understood that in this invention, "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0022] It should be understood that in this invention, "multiple" refers to two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, X and / or Y can represent: X alone, X and Y simultaneously, or Y alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Contains X, Y, and Z", "Contains X, Y, and Z" means that all three X, Y, and Z are contained; "Contains X, Y, or Z" means that one of X, Y, and Z is contained; "Contains X, Y, and / or Z" means that any one, two, or three of X, Y, and Z are contained.

[0023] The technical solution of the present invention will be described in detail below with reference to specific embodiments. The following specific embodiments may be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0024] This invention provides a control method for a garment processing device, the garment processing device including a controller 1, a water inlet assembly, a detergent dispenser 3, and a washing tub 4, such as... Figure 1As shown, the water inlet assembly includes a first water inlet pipe 21 for supplying water to the washing tub 4 and a second water inlet pipe 22 for supplying water to dissolve detergent. The detergent dispenser 3 has a dispensing box 31 for dispensing detergent, and the bottom of the dispensing box 31 has an outlet 310 for discharging liquid into the detergent dispenser 3. A negative pressure extractor 23 is installed on the first water inlet pipe 21, and the extraction port of the negative pressure extractor 23 is connected to the detergent dispenser 3. The control method includes the following: the controller 1 controls the second water inlet pipe 22 to supply water, forming a mixed liquid in the detergent dispenser 3; and controls the first water inlet pipe 21 to supply water. The water supply in the first water inlet pipe 21 sequentially includes a pre-water inlet stage and a first water inlet stage. The process consists of two water inlet stages: a pre-inlet stage (water entering the washing tub 4), a first water inlet stage (water entering the tub 4 by drawing the mixed liquid from the detergent box 3 through the negative pressure extractor 23 and delivering it to the washing tub 4), and a second water inlet stage (water entering the washing tub 4 to a predetermined water level). The order of water entering through the first water inlet pipe 21 and the second water inlet pipe 22 is not critical. The duration of the pre-inlet stage is 0 or greater than 0. If the duration of the pre-inlet stage is 0, the duration of the second water inlet stage is greater than 0; if the duration of the pre-inlet stage is greater than 0, the duration of the second water inlet stage is 0 or greater than 0. The start time of the first water inlet stage is later than the start time of the second water inlet pipe 22. For example, in one embodiment, the water entering through the first water inlet pipe 21 consists of a pre-inlet stage, a first water inlet stage, and a second water inlet stage. In another embodiment, the first water inlet stage consists of a pre-inlet stage and a first water inlet stage. In yet another embodiment, the water entering through the first water inlet pipe 21 consists of a first water inlet stage and a second water inlet stage. The negative pressure extractor 23 can be a venturi tube.

[0025] This invention controls the second water inlet pipe 22 to separately supply water to form a mixed liquid in the detergent box 3. The concentration of the mixed liquid is uniform and controllable. Compared with the method of directly adding detergent to the washing tub 4, it can effectively avoid damage to the clothes caused by excessively concentrated detergent coming into contact with them. Compared with the method of using a venturi tube to extract detergent for mixing, this invention first forms a mixed liquid, and then uses a negative pressure extractor 23 to extract the mixed liquid into the first water inlet pipe 21 and deliver it to the washing tub 4. Both solid and liquid detergents can be used. After two mixing processes, the detergent is more evenly diluted by water. After the mixed liquid enters the washing tub 4, it mixes more evenly with the clothes to be washed, which is beneficial to improving the stain removal and cleaning effect. The second water inlet pipe 22 and the first water inlet pipe 21 are controlled separately for water supply. The mixed liquid can be made again according to actual needs, avoiding the mixed liquid from staying in the detergent box 3 for too long and producing odors. This invention divides the water intake of the first water inlet pipe 21 into three stages: the pre-water intake stage, the first water intake stage, and the second water intake stage. The duration of the first water intake stage is determined based on the amount of detergent needed, which allows for the quantitative use of detergent. The pre-water intake stage and the second water intake stage can be selected or carried out together as needed. With the pre-water intake stage, the clothes can be wetted in advance, which is beneficial for the clothes to mix evenly with the detergent later. Without the pre-water intake stage, the time for the detergent to mix with the clothes can be increased, which is also beneficial for the clothes to mix evenly with the detergent. With the second water intake stage, firstly, it can ensure that there is no detergent residue in the first water inlet pipe 21, and secondly, it can also help the detergent solution in the washing tub 4 to foam, which can improve the stain removal and cleaning effect. The start time of the first water intake stage is later than the start time of the water intake of the second water inlet pipe 22, which ensures that the negative pressure extractor 23 extracts the mixed liquid when it is working, and can avoid the negative pressure extractor 23 sucking up empty. Before and after the first water intake stage, the extraction port of the negative pressure extractor 23 can be disconnected from the detergent box 3. For example, it can be controlled by the solenoid valve 26, which is electrically connected to the controller 1.

[0026] To accurately extract the required amount of detergent during the washing process, the following method can be used: the unit time flow rate of the first water inlet pipe 21 is Q1, the unit time flow rate of the second water inlet pipe 22 is Q2, the absorption ratio of the negative pressure extractor 23 is P, the time of the first water inlet pipe 21 in the first water inlet stage is T1, and the control time of the second water inlet pipe 22 is T2, T1 = (T2 × Q2) × P / Q1. The controller 1 controls the duration of the first water inlet stage based on the water inlet time of the second water inlet pipe 22. The water inlet of the first water inlet pipe 21 and the second water inlet pipe 22 is generally controlled by the water inlet valve 24. Under constant water pressure, Q1 and Q2 remain basically unchanged, and the same water inlet valve can also be used to make Q1 equal to Q2 (theoretically). Therefore, the above formula can be simplified to T1 = T2 × P. In daily life, P remains basically unchanged, that is, the duration of the first water inlet stage is proportional to the water inlet time of the second water inlet pipe 22, which is beneficial for the controller 1 to accurately extract the detergent dosage as needed. To obtain Q1 and Q2, flow meters can be installed on the first inlet pipe 21 and the second inlet pipe 22, or the flow rate can be calculated directly based on the rated flow rate of the inlet valve. Besides using two inlet valves 24 to control the water intake of the first inlet pipe 21 and the second inlet pipe 22 respectively, a single valve can be installed, and a three-way valve 25 can be used to control the water intake of both pipes. Figure 2 As shown.

[0027] In one embodiment, the water intake of the second water inlet pipe 22 can be completed before the water intake of the first water inlet pipe 21 begins, preparing the mixed liquid in advance. This facilitates the thorough dissolution of the detergent and allows large bubbles generated during detergent dissolution to break down, effectively preventing the negative pressure extractor 23 from extracting too much foam when drawing out the mixed liquid. In another embodiment, the water intake of the second water inlet pipe 22 can also be completed after the water intake of the first water inlet pipe 21 begins but before the end of the first water intake stage. For example, the second water inlet pipe 22 can begin water intake only after the pre-water intake stage has started, which can shorten the total time for water to enter the washing tub 4 and shorten the washing process time.

[0028] After prolonged use, the suction port of the negative pressure extractor 23 may accumulate dirt, reducing its cross-section. This causes the actual suction ratio of the negative pressure extractor 23 to increase, meaning that less mixed liquid is actually extracted during the first water intake phase. Therefore, after the first water intake phase, the controller 1 acquires the remaining liquid volume in the detergent dispenser 3. If the remaining liquid volume exceeds a set volume threshold, the count is incremented by 1. When the count reaches the set threshold, the controller 1 determines that the suction ratio of the negative pressure extractor 23 has deviated from its initial value. It then calibrates the suction ratio of the negative pressure extractor 23 and updates it in the controller 1. The controller 1 then controls the water intake time of the first water intake phase according to the calibrated suction ratio during the next wash. The set threshold can typically be set to 3, 4, 5, or more times.

[0029] To ensure sufficient detergent during the washing process, if the remaining liquid volume exceeds the set volume threshold, the controller 1 controls the first water inlet pipe 21 to continue supplying water, thereby sucking up the remaining liquid in the detergent box 3 without affecting the cleaning effect of the current washing process.

[0030] Specifically, to calibrate the suction ratio of the negative pressure extractor 23, the following method can be used: After the remaining liquid in the detergent box 3 is completely sucked out, the controller 1 records the duration t of the continued water intake from the first water inlet pipe 21. When the number of records reaches a set threshold, if the duration t does not increase sequentially according to the recorded time, the average value t of the duration t is calculated. 均 The suction ratio of the negative pressure extractor 23 is calibrated according to the following formula, P. 校准 =(T1+t) 均 For example, if the threshold for the number of occurrences is set to 3, and the durations t are t1, t2, and t3 in chronological order of recording time, and t1 > t2 and t2 < t3, then the duration t does not increase in chronological order of recording time. Calculate t... 均 = (t1+t2+t3) / 3. If the duration t increases, select the last duration t and calibrate the suction ratio of the negative pressure extractor 23 according to the following formula: P 校准 = (T1+t)×Q1 / (T2×Q2), for example, if the threshold for the number of times is set to 3, and the duration t is t1, t2 and t3 in the order of the recorded time, and t1<t2<t3, then the duration t becomes longer and longer. Select t3 and substitute it into the formula for calculation.

[0031] To control the concentration of detergent, in one embodiment, the water inlet time of the second water inlet pipe 22 can be determined based on the detergent dosage required to complete the washing process. To briefly explain, clothing processing equipment typically involves washing, rinsing, and dehydration processes. The washing process mentioned in this invention refers to the process requiring the addition of detergent.

[0032] Furthermore, to enhance the intelligence of the laundry handling equipment, a controller 1 can be designed to acquire the amount of laundry the user has put into the washing tub 4, calculate the required detergent dosage for the washing process based on the amount of laundry, determine the water inlet time of the second water inlet pipe 22 based on the calculated detergent dosage, and then determine the duration of the first water inlet stage based on the water inlet time of the second water inlet pipe 22. Acquiring the amount of laundry the user has put into the washing tub 4 and calculating the required detergent dosage for the washing process based on the amount of laundry are both existing technologies and will not be elaborated upon here.

[0033] In one embodiment, the detergent can be selected as a liquid detergent, and the laundry handling equipment also includes an automatic dispenser 5 that automatically dispenses detergent into the dispensing box 31. The controller 1 controls the automatic dispenser to dispense the required amount of detergent according to the amount of laundry, resulting in a higher level of intelligence. In another embodiment, the detergent can be selected as a solid detergent, and the dispensing box 31 has a first position for removing the detergent box 3 for the user to dispense detergent and a second position located inside the detergent box 3 to receive water from the second water inlet pipe 22. The controller 1 prompts the user to dispense the required amount of detergent according to the amount of laundry.

[0034] To effectively avoid the negative pressure extractor 23 from empty suction, in one embodiment, a liquid level detector 32 can be provided in the detergent box 3. The liquid level detector 32 sends a liquid level signal of the detergent box 3 to the controller 1. After the liquid level of the detergent box 3 reaches the set liquid level, the controller 1 controls the first water inlet pipe 21 to start the first water inlet stage.

[0035] To reduce the amount of foam generated by the mixed liquid formed in the detergent box 3 due to impact during the flow into the dispensing box 31, in one embodiment, the outlet of the dispensing box 31 can be designed to face and be close to the inner wall of the detergent box 3, so that the mixed liquid flows downward along the inner wall of the detergent box 3, minimizing the impact foaming of the mixed liquid, and also effectively preventing the negative pressure extractor 23 from extracting foam or sucking up empty.

[0036] The mixture of detergent and water will be temporarily stored in the detergent box 3. If the second water inlet pipe 22 introduces water into the detergent box 3, it will cause the mixture to foam and generate a lot of foam. Therefore, in order to reduce the foam generated by water, in one embodiment, the second water inlet pipe 22 can be designed to introduce water only into the dispensing box 31 to avoid impacting the liquid in the detergent box 3 and causing excessive foaming.

[0037] The laundry processing equipment can be a common top-loading washing machine, front-loading washing machine, or other washing machine that uses detergent. The detergent can be common laundry powder or liquid detergent, or it can be fabric softener, disinfectant, etc. In addition to the preferred embodiments described above, the present invention has other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection claimed by the present invention.

Claims

1. A control method for a garment processing device, the garment processing device comprising a controller, a water inlet assembly, a detergent dispenser, and a washing tub, the water inlet assembly comprising a first water inlet pipe for supplying water to the washing tub and a second water inlet pipe for supplying water to dissolve detergent, characterized in that, The detergent dispenser contains a dispensing box for adding detergent. The bottom of the dispensing box has an outlet for discharging liquid into the detergent dispenser. A negative pressure extractor is installed on the first water inlet pipe, and the extraction port of the negative pressure extractor is connected to the detergent dispenser. The control method includes the following: a controller controls the second water inlet pipe to allow water to enter, forming a mixed liquid in the detergent dispenser; the controller controls the first water inlet pipe to enter, and the water inlet in the first water inlet pipe sequentially includes a pre-inlet stage, a first inlet stage, and a second inlet stage. The pre-inlet stage involves adding water to the washing tub; the first inlet stage involves extracting the mixed liquid from the detergent dispenser using the negative pressure extractor and delivering it to the washing tub; the second inlet stage involves adding water to the washing tub to a predetermined water level. The water inlet sequence is not important. The duration of the first water inlet stage is 0 or greater than 0. If the duration of the first water inlet stage is 0, the duration of the second water inlet stage is greater than 0. If the duration of the first water inlet stage is greater than 0, the duration of the second water inlet stage is 0 or greater than 0. The start time of the first water inlet stage is later than the start time of the second water inlet stage. After the first water inlet stage ends, the controller obtains the remaining liquid volume in the detergent box. If the remaining liquid volume exceeds the set volume threshold, the count is incremented by 1. When the count reaches the set count threshold, the suction ratio of the negative pressure extractor is calibrated and updated in the controller. The controller controls the water inlet time of the first water inlet stage according to the calibrated suction ratio during the next wash. 2.The control method of a laundry treating apparatus according to claim 1, characterized in that, The flow rate per unit time of the first water inlet pipe is Q1, the flow rate per unit time of the second water inlet pipe is Q2, the suction ratio of the negative pressure extractor is P, the time of the first water inlet pipe in the first water inlet stage is T1, the time of controlling the water inlet of the second water inlet pipe is T2, T1=(T2×Q2)×P / Q1, and the controller controls the duration of the first water inlet stage according to the water inlet time of the second water inlet pipe. 3.The control method of a laundry treating apparatus according to claim 2, characterized in that, The water intake of the second water inlet pipe is completed before the water intake of the first water inlet pipe begins; or, the water intake of the second water inlet pipe is completed after the water intake of the first water inlet pipe begins and before the end of the first water intake stage. 4.The control method of a laundry treating apparatus according to claim 1, characterized in that, If the remaining liquid volume exceeds the set volume threshold, the controller will control the first water inlet pipe to continue to supply water, and then suck up the remaining liquid in the detergent box. 5.The control method of a laundry treating apparatus according to claim 4, characterized in that, After the remaining liquid in the detergent dispenser is completely evacuated, the controller records the duration t of continued water intake through the first water inlet pipe. When the number of records reaches a set threshold, if the duration t does not increase sequentially according to the recorded time, the controller calculates the average value t of the duration t. 均 The suction ratio of the negative pressure extractor is calibrated according to the following formula, P. 校准 =(T1+t) 均 If the duration t increases sequentially according to the recorded time, then the duration t of the last recorded time is selected. The suction ratio of the negative pressure extractor is calibrated according to the following formula: P × Q1 / (T2 × Q2). 校准 = (T1+t)×Q1 / (T2×Q2). 6.The control method of a laundry treating apparatus according to claim 2, characterized in that, The water inlet time of the second water inlet pipe is determined based on the amount of detergent required to complete this washing process. 7.The control method of a laundry treating apparatus according to claim 6, characterized in that, The controller obtains the amount of clothes the user puts into the washing tub, calculates the washing dosage required for the washing process based on the amount of clothes, then determines the water inlet time of the second water inlet pipe based on the calculated washing dosage, and then determines the duration of the first water inlet stage based on the water inlet time of the second water inlet pipe. 8.The control method of a laundry treating apparatus according to claim 7, characterized in that, The detergent is a liquid detergent, and the laundry treatment equipment also includes an automatic dispenser that automatically dispenses detergent into the dispensing box. The controller controls the automatic dispenser to dispense the required amount of detergent based on the amount of laundry. Alternatively, the detergent is a solid detergent, and the dispensing box has a first position for the user to dispense detergent from outside the detergent box and a second position for receiving water from the second water inlet pipe inside the detergent box. The controller prompts the user to dispense the required amount of detergent based on the amount of laundry. 9.The control method of a laundry treating apparatus according to claim 1, characterized in that, The detergent dispenser is equipped with a liquid level detector, which sends a liquid level signal to the controller. After the liquid level in the detergent dispenser reaches the set level, the controller controls the first water inlet pipe to start the first water inlet stage; and / or, the outlet of the dispensing box is positioned facing and close to the inner wall of the detergent dispenser, so that the mixed liquid flows downward along the inner wall of the detergent dispenser; and / or, the second water inlet pipe only supplies water to the dispensing box to avoid impacting the liquid in the detergent dispenser and causing excessive foaming.

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