Method of wetting a load, laundry treatment apparatus, and storage medium

Abstract

Embodiments of the present application provide a method for wetting a load, a laundry treatment apparatus, and a storage medium. The method for wetting a load includes providing water into a laundry treatment apparatus to wet a load, turning on a circulation pump to spray the water onto the load for a first time duration, and determining whether to end a wetting process of the load based on a pressure of free water in the laundry treatment apparatus. This not only ensures sufficient wetting of the load, but also significantly suppresses the generation of foam, thereby greatly reducing the risk of generating a large amount of foam in subsequent heating and washing processes.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical appliances, and in particular to a method of wetting a load, a laundry treatment apparatus and a storage medium. BACKGROUND

[0002] In the process of wetting a load, the mechanical force generated by the rotation of the inner drum interacts with the water containing detergent or laundry liquid to generate foam. When the amount of foam reaches a certain level, it is not conducive to subsequent heating and washing processes, thereby affecting the washing effect. SUMMARY

[0003] One purpose of embodiments of the present application is to provide an improved laundry treatment apparatus, a method of wetting a load therein and a storage medium.

[0004] Embodiments of the present application provide a method of wetting a load in a laundry treatment apparatus, the laundry treatment apparatus comprising an inner drum for accommodating the load. The method comprises providing water into the laundry treatment apparatus to wet the load; starting a circulating pump to spray the water onto the load for a first time duration; determining whether to end the wetting process of the load based on a pressure of free water in the laundry treatment apparatus.

[0005] Optionally, the step of providing water into the laundry treatment apparatus to wet the load comprises providing water into the laundry treatment apparatus to rinse detergent or laundry liquid and wet the load; providing water based on the pressure of the free water, when the pressure does not exceed a first pressure threshold, providing water into the laundry treatment apparatus, when the pressure exceeds a second pressure threshold, stopping providing water, the first pressure threshold being less than the second pressure threshold.

[0006] Optionally, when the pressure is the first pressure threshold, the free water is 2 centimeters higher than the lowest position of the inner drum, when the pressure is the second pressure threshold, the free water is 3 centimeters higher than the lowest position of the inner drum.

[0007] Optionally, the step of providing water into the laundry treatment apparatus to wet the load comprises detecting a first volume of water provided in the step, when the first volume exceeds a first volume threshold, stopping providing water.

[0008] Optionally, the first volume threshold is between 3 liters and 10 liters.

[0009] Optionally, the first time duration is between 30 seconds and 120 seconds.

[0010] Optionally, the step of providing water into the laundry treatment apparatus to wet the load and / or the step of starting the circulating pump to spray the water onto the load for the first time duration comprises maintaining a rotational speed of the inner drum at a first rotational speed.

[0011] Optionally, the first rotational speed is between 30 rpm and 60 rpm.

[0012] Optionally, the step of determining whether to end the wetting process of the load based on the pressure of the free water in the laundry treatment apparatus comprises determining whether the pressure of the free water is less than a third pressure threshold, and if not, ending the wetting process of the load, and if so, performing the following steps: a, increasing the rotational speed of the inner drum to a second rotational speed and operating for a second time duration; b, decreasing the rotational speed of the inner drum to a third rotational speed and operating for a third time duration; c, providing a second volume of water into the laundry treatment apparatus during the third time duration and causing the level of the free water to be lower than the lowest position of the inner drum; d, starting the circulating pump to spray water onto the load; e, determining whether the pressure of the free water is less than the third pressure threshold, and if not, ending the wetting process of the load, and if so, repeating steps c and d until the pressure of the free water is determined to be not less than the third pressure threshold, thereby ending the wetting process.

[0013] Optionally, the step of determining whether the pressure of the free water is less than the third pressure threshold comprises detecting the pressure of the free water and comparing whether the pressure of the free water is less than the third pressure threshold, during which the circulating pump is stopped.

[0014] Optionally, the second rotational speed is between 130 rpm and 600 rpm, and the second time duration is between 30 seconds and 60 seconds.

[0015] Optionally, step a comprises causing the load to be close to the inner drum and form a load ring.

[0016] Optionally, step b comprises maintaining the load ring so that the load is always kept close to the drum.

[0017] Optionally, the third rotational speed is between 60 rpm and 100 rpm, and the third time duration is between 5 minutes and 10 minutes.

[0018] Optionally, steps c and / or d comprise maintaining the rotational speed of the inner drum at the third rotational speed.

[0019] Optionally, the second volume is between 1 liter and 2 liters.

[0020] Optionally, the third pressure threshold is between 8 pa and 100 pa.

[0021] The embodiments of the present application also provide a computer readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and has stored thereon computer instructions, which, when executed, perform the steps of the above-mentioned method for wetting a load in a laundry treatment apparatus.

[0022] The embodiment of the present application also provides a laundry treating apparatus, which comprises an inner drum for accommodating a load and a circulating pump, and further comprises a control device comprising a memory and a processor, wherein the memory stores computer instructions executable on the processor, and the processor executes the steps of the above-mentioned method for wetting a load in a laundry treating apparatus.

[0023] The embodiment of the present application also provides another method for wetting a load in a laundry treating apparatus, which comprises an inner drum for accommodating a load. The method comprises: providing water into the laundry treating apparatus to wet the load; providing water into the laundry treating apparatus based on a pressure of free water in the laundry treating apparatus, when the pressure is not more than a first pressure threshold, and stopping the provision of water when the pressure is more than a second pressure threshold, wherein the first pressure threshold is less than the second pressure threshold; detecting a first volume of the provided water, and starting the circulating pump to spray water onto the load when the first volume is less than a first volume threshold, and then ending the wetting process of the load.

[0024] Optionally, the step of providing water into the laundry treating apparatus to wet the load comprises providing water into the laundry treating apparatus to wash laundry powder or laundry liquid and wet the load.

[0025] Optionally, the first volume threshold is between 3 liters and 10 liters.

[0026] Optionally, the method comprises: when the first volume is equal to the first volume threshold, starting the circulating pump to spray water onto the load for a first time length; and determining whether to end the wetting process of the load based on the pressure of free water in the laundry treating apparatus.

[0027] Optionally, the step of determining whether to end the wetting process of the load based on the pressure of free water in the laundry treating apparatus comprises: judging whether the pressure of free water is less than a third pressure threshold, and if not, ending the wetting process of the load, and if yes, performing the following steps: a, increasing the rotating speed of the inner drum to a second rotating speed and running for a second time length; b, decreasing the rotating speed of the inner drum to a third rotating speed and running for a third time length; c, providing a second volume of water into the laundry treating apparatus and making the height of free water lower than the lowest position of the inner drum within the third time length; d, starting the circulating pump to spray water onto the load; e, judging whether the pressure of free water is less than the third pressure threshold, and if not, ending the wetting process of the load, and if yes, repeating steps c and d and then judging whether the pressure of free water is less than the third pressure threshold until the pressure of free water is judged to be not less than the third pressure threshold, thereby ending the wetting process.

[0028] Optionally, the step of judging whether the pressure of free water is less than the third pressure threshold comprises: detecting the pressure of free water, and comparing whether the pressure of free water is less than the third pressure threshold, wherein the circulating pump is stopped during the comparison.

[0029] Optionally, step a comprises bringing the load into close contact with the inner drum and forming a load ring.

[0030] Optionally, step b comprises maintaining the load ring so that the load is always kept in close contact with the drum.

[0031] Optionally, steps c and / or d comprise maintaining the rotational speed of the inner drum at the third rotational speed.

[0032] Optionally, the third pressure threshold is between 8 pa and 80 pa.

[0033] The embodiments of the present application also provide another computer readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and has stored thereon computer instructions, which, when executed, perform the steps of the above-mentioned another method for wetting a load in a laundry treatment apparatus.

[0034] The embodiments of the present application also provide another laundry treatment apparatus, which comprises an inner drum for accommodating a load, and further comprises a control device comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, the processor executing the computer instructions performing the steps of the above-mentioned another method for wetting a load in a laundry treatment apparatus.

[0035] Compared with the prior art, the technical solutions of the embodiments of the present application have beneficial effects. For example, while ensuring that the load is fully wetted, the generation of foam is significantly inhibited, thereby greatly reducing the risk of generating a large amount of foam in the subsequent heating and washing processes. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a flowchart of a method for wetting a load in a laundry treatment apparatus according to an embodiment of the present application;

[0037] Figure 2 is a curve diagram of the pressure of free water, the water inflow and the rotational speed of the inner drum varying with time during the wetting of the load according to an embodiment of the present application;

[0038] Figure 3 is a schematic diagram of a laundry treatment apparatus according to an embodiment of the present application;

[0039] Figure 4 is a flowchart of another method for wetting a load in a laundry treatment apparatus according to an embodiment of the present application;

[0040] Figure 5 is a schematic diagram of another laundry treatment apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0041] In the prior art, the laundry treating apparatus needs enough water amount to ensure the full wetting of the load in the load wetting process of the washing program, and the water level generally needs to reach the height above the inner drum to ensure the full contact of the load with the water. In the wetting process, the mechanical force generated by the rotation of the inner drum of the washing machine interacts with the water containing the washing powder or washing liquid to generate foam, and when the amount of foam reaches a certain degree, it will have an adverse effect on the subsequent heating and washing process. In addition, in the case where the laundry treating apparatus adopts the steam washing method to wash the load, since the steam washing method is a method of heating the wet load by hot air in the state that there is no free water in the outer drum, and then washing, wherein the hot air is formed by heating the air by heating the air heating pipe to a high temperature (for example, 500 to 600 degrees Celsius), when the wet and cold foam contacts the high-temperature air heating pipe, not only the heating performance of the latter will be affected, but also the latter will be seriously damaged.

[0042] The technical solution of the embodiment of the present application adopts a step-by-step water feeding process (including a first stage of water feeding, a second stage of water feeding, and a subsequent water supplementing stage), uses a circulating pump to wet the load, and continuously determines the amount of residual free water in the laundry treating apparatus by detecting the pressure value signal in the process of step-by-step wetting of the load, so as to determine whether the load reaches the water absorption saturation state. This not only ensures the full wetting of the load, but also significantly inhibits the generation of foam.

[0043] In order to make the purpose, features and beneficial effects of the embodiment of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0044] Figure 1 is a flowchart of a method 100 for wetting a load in a laundry treating apparatus in the embodiment of the present application; the laundry treating apparatus includes an inner drum for accommodating the load.

[0045] The method 100 includes providing water into the laundry treating apparatus to wet the load (S110), starting the circulating pump to spray water onto the load for a first time length (S120), and determining whether to end the wetting process of the load based on the pressure of the free water in the laundry treating apparatus (S130). The free water is water that flows freely in the laundry treating apparatus.

[0046] In some embodiments, during the implementation of the method 100, the height of the free water can be always kept lower than the lowest position of the inner drum.

[0047] The step S110 can include a first stage, that is, providing water into the laundry treating apparatus to rinse the washing powder or washing liquid and wet the load. In an embodiment, the amount of water provided in the first stage can be in the range of 3 to 7 liters.

[0048] The step S110 can also have a second phase, i.e. water is provided based on the pressure of the free water, for example, water is provided into the laundry treatment apparatus when the pressure is not more than a first pressure threshold, and water is stopped to be provided when the pressure is more than a second pressure threshold, the first pressure threshold being less than the second pressure threshold. In one embodiment, the free water is 2 cm higher than the lowest position of the inner drum when the pressure is the first pressure threshold, and the free water is 3 cm higher than the lowest position of the inner drum when the pressure is the second pressure threshold. In another embodiment, the amount of water provided in the second phase can be in the range of 0 to 3 liters.

[0049] In the execution of the step S110, a first capacity of water provided in the step S110 (which includes the amount of water provided in the first phase and the second phase respectively) can be detected, and water is stopped to be provided when the first capacity is more than a first capacity threshold. In one embodiment, the first capacity threshold is between 3 liters and 10 liters.

[0050] In the execution of the step S120, the circulating pump can circulate and spray the water (water located at the bottom of the outer drum of the laundry treatment apparatus) to the load; a first time length of the spraying can be between 30 seconds and 120 seconds.

[0051] In the execution of the steps S110 and S120, the rotation speed of the inner drum can be maintained at a first rotation speed. In one embodiment, the first rotation speed is between 30 rpm (revolutions per minute) and 60 rpm.

[0052] In the execution of the step S130, it can be determined whether the pressure of the free water is less than a third pressure threshold. For example, the pressure of the free water can be detected, and it can be determined whether the pressure of the free water is less than the third pressure threshold; in the meantime, the circulating pump is stopped to work so as to avoid that the detected pressure of the free water has a large error due to the water flow flowing and turbulence caused by the working of the circulating pump. In one embodiment, the third pressure threshold is between 8 pa (Pascal) and 100 pa. By determining whether the pressure of the free water is less than the third pressure threshold, it can be analyzed how much free water in the drum is not absorbed by the load, if the pressure of the free water is not less than the third pressure threshold, it means that there is more free water in the drum which is not absorbed by the load, i.e. the load has reached a water absorption saturation state; on the contrary, if the pressure of the free water is less than the third pressure threshold, it means that the load has not reached the water absorption saturation state.

[0053] In the execution of step S130, if it is judged that the pressure of the free water is not less than the third pressure threshold, the wetting process of the load is ended, otherwise the following steps are executed: a, the rotating speed of the inner drum is raised to the second rotating speed and runs for a second time length, b, the rotating speed of the inner drum is lowered to a third rotating speed and runs for a third time length, c, a second capacity of water is provided into the laundry treating apparatus within the third time length (i.e. water supplement), and the height of the free water is lower than the lowest position of the inner drum, d, the circulating pump is started to spray water onto the load, e, it is judged whether the pressure of the free water is less than the third pressure threshold, if no, the wetting process of the load is ended, if yes, steps c and d are repeated until it is judged that the pressure of the free water is not less than the third pressure threshold, and then the wetting process is ended.

[0054] In the execution of step a, the load can be tightly attached to the inner drum and a load ring is formed. In addition, the second rotating speed can be between 130 rpm and 600 rpm, and the second time length can be between 30 seconds and 60 seconds.

[0055] In the execution of step b, the rotating speed of the inner drum is lowered from the second rotating speed to a third rotating speed, which can maintain the formed load ring so that it is always kept in the state of tightly attaching to the inner drum. In addition, the third rotating speed can be between 60 rpm and 100 rpm, and the third time length can be between 5 minutes and 10 minutes.

[0056] In the execution of step c, the second capacity of water provided can be between 1 liter and 2 liters; the height of the free water is lower than the lowest position of the inner drum, so that the mechanical force generated by the rotation of the inner drum cannot interact with the free water containing the washing powder or washing liquid, thereby blocking the generation of foam; and the rotating speed of the inner drum can be maintained at the third rotating speed, which can be between 60 rpm and 100 rpm.

[0057] In the execution of step d, the circulating pump can circulate and spray water (water located at the bottom of the outer drum of the laundry treating apparatus) onto the load, and the working time of the circulating pump is between 15 seconds and 50 seconds; and the rotating speed of the inner drum can be maintained at the third rotating speed, which can be between 60 rpm and 100 rpm.

[0058] In the execution of step e, it is continuously judged whether the pressure of the free water is less than the third pressure threshold.

[0059] The embodiments of the present application consider both the characteristics of wetting the load and generating a large amount of foam of the free water, and therefore, the corresponding technical solutions determine whether to end the wetting process of the load based on the pressure of the free water in the laundry treating apparatus, which ensures that the load is fully wetted while significantly inhibiting the generation of foam, thereby greatly reducing the risk of generating a large amount of foam in the subsequent heating and washing processes.

[0060] The technical solution of the embodiment of the present application avoids providing an excessive amount of water at one time, which would cause the height of the free water to be higher than the lowest position of the inner drum, so that the inner drum always hits the free water during rotation, thereby generating a large amount of foam.

[0061] The technical solution of the embodiment of the present application can control the amount of water provided into the laundry treatment apparatus, for example, the second water-feeding stage, wherein water is provided into the laundry treatment apparatus when the pressure does not exceed the first pressure threshold to ensure that a suitable amount of water is provided for wetting the load, and water is stopped from being provided when the pressure exceeds the second pressure threshold to avoid providing an excessive amount of water to generate a large amount of foam, which takes into account both the wetting of the load and the suppression of foam generation.

[0062] The technical solution of the embodiment of the present application can also cause the height of the free water to be lower than the lowest position of the inner drum, so that the inner drum does not always contact the free water during the subsequent wetting process of the load; since the inner drum cannot directly hit the free water during rotation, the mechanical force generated by the rotation of the inner drum cannot interact with the free water containing washing powder or washing liquid, thereby blocking the generation of foam.

[0063] Figure 2 Three curves respectively show the pressure of the free water, the amount of water fed, and the rotation speed of the inner drum during the wetting process of the load.

[0064] Figure 2 has an abscissa, which represents time. Specifically, the time points 0, t1, t2, t3, t4, and t5 divide the wetting process into five stages, and the durations of the five stages are T1, T2, T3, T4, and T5, respectively.

[0065] Figure 2 has an ordinate, which represents the corresponding physical quantity changing with time in the three curves. In the curve about the pressure of the free water, the ordinate represents the pressure. In the curve about the amount of water fed, the ordinate represents the volume of water. In the curve about the rotation speed of the inner drum, the ordinate represents the rotation speed of the inner drum.

[0066] In the curve about the pressure of the free water, the dashed line in the figure represents the third pressure threshold. When the pressure value is at or above the dashed line, it means that the pressure value is equal to or greater than the third pressure threshold. When the pressure value is below the dashed line, it means that the pressure value is less than the third pressure threshold. The third pressure threshold is selected from a range of 8 pa to 100 pa.

[0067] In a first phase of duration T1, water is provided into the laundry treatment apparatus to rinse the washing powder or liquid and to wet the load; wherein T1 is 30 seconds, the rotation speed of the inner drum is maintained at 35-50 rpm, and the water inlet quantity is 5 liters.

[0068] In a second phase of duration T2, a suitable water quantity is provided into the laundry treatment apparatus based on the pressure of the free water; wherein T1 is 15 seconds, the rotation speed of the inner drum is maintained at 35-50 rpm, and the water inlet quantity is 2 liters.

[0069] In a third phase of duration T3, the circulation pump is turned on to spray water onto the load so that all the free water is absorbed by the load; wherein T3 is 60 seconds, the rotation speed of the inner drum is maintained at 35-50 rpm. And, after the circulation pump is stopped, the current pressure value is detected, as shown in Figure 2 The pressure value is less than the third pressure threshold, so the following fourth and fifth phases will be entered.

[0070] In a fourth phase of duration T4, the rotation speed of the inner drum is increased to 300 rpm (which is the maximum rotation speed, represented as a peak in the figure), and the centrifugal force generated causes the load to stick to the drum and form a load ring; wherein T4 is 30 seconds.

[0071] In a fifth phase of duration T5, the rotation speed of the inner drum is decreased to and maintained at a range of about 80 rpm, which is sufficient to maintain the load ring. As shown in Figure 2 There are four sub-phases A, B, C and D. Specifically, in sub-phase A, a certain amount of water (1 liter) is fed from the water inlet valve, which does not cause the free water to rise to the lowest position of the inner drum; in sub-phase B, the water feeding from the water inlet valve is stopped, the circulation pump is turned on and works for 20 seconds to spray water onto the load so that all the free water is absorbed by the load, and, after the circulation pump is stopped, the current pressure value is detected, as shown in Figure 2 The pressure value is less than the third pressure threshold, so the water feeding and wetting process still needs to continue; in sub-phase C, a certain amount of water (1 liter) is fed from the water inlet valve, which does not cause the free water to rise to the lowest position of the inner drum; in sub-phase D, the water feeding from the water inlet valve is stopped, the circulation pump is turned on to spray water onto the load so that all the free water is absorbed by the load, and, after the circulation pump is stopped, the current pressure value is detected, as shown in Figure 2 The pressure value is greater than the third pressure threshold, so the wetting process is ended.

[0072] The embodiment of the present application also discloses a computer readable storage medium, which is a non-volatile storage medium or a non-transient storage medium, and has computer instructions stored thereon, which, when executed, perform the steps of the method as described above in conjunction with Figures 1 to 2 .

[0073] An embodiment of the present application also discloses a laundry treating apparatus 300, as shown in the accompanying drawings, comprising an inner drum 303 for accommodating a load 302 and an outer drum 304 sleeved outside the inner drum 303 and in fluid communication with the inner drum 303, a washing heating pipe 305 at the bottom of the outer drum 304 adapted to heat free water in the outer drum 304, a circulating pump 306 adapted to circulate and spray water from the bottom of the outer drum 304 (e.g. through a water circulating channel 307) onto the load 302, an air heating pipe 308 in a drying channel 309 adapted to heat air, and a fan 310 adapted to flow the heated air to form hot air and pass through and heat the load 302. Figure 3

[0074] The laundry treating apparatus 300 further comprises a control device 311 comprising a memory and a processor, the memory storing computer instructions executable on the processor, and the processor executing the computer instructions to perform the steps of the method as described above in connection with Figures 1 to 2 .

[0075] The laundry treating apparatus 300 can further comprise a pressure sensor 312, a detergent box 313, and a drain pump 316. The pressure sensor 312 is arranged at the bottom of the outer drum 304 to detect the pressure of the free water; the detergent box 313 provides laundry detergent or washing liquid, a water supply pipe 314 supplies water to the detergent box 313, and a water inlet valve 315 is arranged on the water supply pipe 314; and the drain pump 316 is connected to a drain channel 317 to drain the free water.

[0076] In some embodiments, the laundry treating apparatus 300 can be a drum washing machine.

[0077] Figure 4 is a flowchart of another method 400 for wetting a load in a laundry treating apparatus according to an embodiment of the present application; the laundry treating apparatus comprises an inner drum for accommodating the load.

[0078] The method 400 comprises providing water into the laundry treating apparatus to wet the load (S410, which is a first stage of providing water); providing water into the laundry treating apparatus based on the pressure of free water in the laundry treating apparatus, when the pressure does not exceed a first pressure threshold, providing water into the laundry treating apparatus, and when the pressure exceeds a second pressure threshold, stopping providing water, wherein the first pressure threshold is less than the second pressure threshold (S420, which is a second stage of providing water); detecting a first volume of the provided water, and when the first volume is less than a first volume threshold, starting a circulating pump to spray water onto the load, and then ending the wetting process of the load (S430). Wherein the free water is water that freely flows in the laundry treating apparatus.

[0079] In some embodiments, during the implementation of the method 400, the height of the free water can be kept lower than the lowest position of the inner drum at all times. ​

[0080] In the execution of step S410, water can be provided into the laundry treatment apparatus to rinse the laundry detergent and to wet the load. In one embodiment, the amount of water provided in the first stage can be in the range of 3 to 7 liters.

[0081] In the execution of step S420, water is provided based on the pressure of the free water, for example, water is provided into the laundry treatment apparatus when the pressure does not exceed a first pressure threshold, water is stopped when the pressure exceeds a second pressure threshold, the first pressure threshold is less than the second pressure threshold. In one embodiment, the free water is 2 centimeters higher than the lowest position of the inner tub when the pressure is the first pressure threshold, the free water is 3 centimeters higher than the lowest position of the inner tub when the pressure is the second pressure threshold. In another embodiment, the amount of water provided in the second stage can be in the range of 0 to 3 liters.

[0082] In the execution of steps S410 and S420, the rotational speed of the inner tub can be maintained at a first rotational speed. In one embodiment, the first rotational speed is between 30 rpm and 60 rpm.

[0083] In the execution of step S430, a first volume of water provided in the step (which includes the amount of water provided in steps S410 and S420 respectively) is detected, when the first volume is less than a first volume threshold, a circulating pump is turned on to spray water onto the load, and then the wetting process of the load is ended. In one embodiment, the first volume threshold is between 3 liters and 10 liters.

[0084] The technical solution of the embodiments of the present application determines that the quality of the load is small based on the first volume being less than the first volume threshold, and then ends the wetting process of the load, so that no additional water replenishment stage is performed. In the case of small load quality, the technical solution can save energy consumption and save operation time.

[0085] When the first volume is equal to the first volume threshold, a circulating pump is turned on to spray water onto the load for a first time duration, and whether to end the wetting process of the load is determined based on the pressure of the free water in the laundry treatment apparatus.

[0086] In the specific implementation, it can be judged whether the pressure of the free water is less than a third pressure threshold. For example, the pressure of the free water can be detected, and it can be compared whether the pressure of the free water is less than the third pressure threshold; in the process, the circulating pump is stopped to avoid that the detected free water pressure has a large error due to the water flow generated by the operation of the circulating pump and the turbulence. In an embodiment, the third pressure threshold is between 8 pa and 100 pa. By judging whether the pressure of the free water is less than the third pressure threshold, it can be analyzed how much free water in the drum is not absorbed by the load. If the pressure of the free water is not less than the third pressure threshold, it means that there is more free water in the drum that is not absorbed by the load, that is, the load has reached the water absorption saturation state; on the contrary, if the pressure of the free water is less than the third pressure threshold, it means that the load has not reached the water absorption saturation state.

[0087] In the specific implementation, if it is judged that the pressure of the free water is not less than the third pressure threshold, the wetting process of the load is ended, otherwise the following steps are performed: a, the rotating speed of the inner drum is increased to a second rotating speed and runs for a second time length, b, the rotating speed of the inner drum is reduced to a third rotating speed and runs for a third time length, c, a second capacity of water is provided into the clothes treatment device (i.e. water supplement) and the height of the free water is lower than the lowest position of the inner drum in the third time length, d, the circulating pump is started to spray water on the load, e, it is judged whether the pressure of the free water is less than the third pressure threshold, if no, the wetting process of the load is ended, if yes, steps c and d are repeated until it is judged that the pressure of the free water is not less than the third pressure threshold, so that the wetting process is ended.

[0088] In the implementation of step a, the load can be tightly attached to the inner drum and a load ring is formed. In addition, the second rotating speed can be between 130 rpm and 600 rpm, and the second time length can be between 30 seconds and 60 seconds.

[0089] In the implementation of step b, the rotating speed of the inner drum is reduced from the second rotating speed to the third rotating speed, which can maintain the formed load ring so that it always remains in the state of being attached to the drum. In addition, the third rotating speed can be between 60 rpm and 100 rpm, and the third time length can be between 5 minutes and 10 minutes.

[0090] In the implementation of step c, the second capacity of water provided can be between 1 liter and 2 liters; the height of the free water is lower than the lowest position of the inner drum, so that the mechanical force generated by the rotation of the inner drum cannot interact with the free water containing washing powder or washing liquid, thereby blocking the generation of foam; and the rotating speed of the inner drum can be maintained at the third rotating speed, wherein the third rotating speed can be between 60 rpm and 100 rpm.

[0091] In the execution of step d, the circulating pump can spray the water (water located at the bottom of the outer tub of the laundry treating apparatus) onto the load, and the working time of the circulating pump is between 15 seconds and 50 seconds; and the rotating speed of the inner tub can be maintained at a third rotating speed, wherein the third rotating speed can be between 60 rpm and 100 rpm.

[0092] In the execution of step e, it is continuously determined whether the pressure of the free water is less than a third pressure threshold.

[0093] The technical solution of the embodiment of the present application avoids providing excessive water at one time, and the excessive water can make the height of the free water higher than the lowest position of the inner tub, so that the inner tub always hits the free water in the rotating process, and then a large amount of foam is generated.

[0094] The technical solution of the embodiment of the present application can control the amount of water provided into the laundry treating apparatus, for example, the second stage of water filling, wherein when the pressure does not exceed the first pressure threshold, water is provided into the laundry treating apparatus to ensure that a proper amount of water is provided for wetting the load, and when the pressure exceeds the second pressure threshold, the water is stopped to avoid providing excessive water to generate a large amount of foam, which takes into account both the wetting of the load and the suppression of foam generation.

[0095] The embodiment of the present application takes into account the two aspects of the characteristics of the free water, that is, wetting the load and generating a large amount of foam, so that the corresponding technical solution determines whether to end the wetting process of the load based on the pressure of the free water in the laundry treating apparatus, which ensures that the load is fully wetted while significantly suppressing the generation of foam, thereby greatly reducing the risk of generating a large amount of foam in the subsequent heating and washing process.

[0096] The technical solution of the embodiment of the present application can also make the height of the free water lower than the lowest position of the inner tub, so that the inner tub does not always contact the free water in the subsequent load wetting process; since the inner tub cannot directly hit the free water in the rotating process, the mechanical force generated by the rotation of the inner tub cannot interact with the free water containing the washing powder or washing liquid, thereby blocking the generation of foam.

[0097] The embodiment of the present application also discloses another computer readable storage medium, which is a non-volatile storage medium or a non-transient storage medium, and has computer instructions stored thereon, and the computer instructions run to execute the steps of the method as described above. Figure 4 The steps of the method.

[0098] The embodiment of the present application also discloses another laundry treating apparatus 500, as Figure 5As shown, inside its housing 501 includes an inner cylinder 503 for accommodating a load 502 and an outer cylinder 504 sleeved outside the inner cylinder 503 and in fluid communication with the inner cylinder 503, a washing heating pipe 505 at the bottom of the outer cylinder 504 adapted to heat free water in the outer cylinder 504, a circulating pump 506 adapted to circulate and spray water from the bottom of the outer cylinder 504 (for example through a water circulating passage 507) onto the load 502, an air heating pipe 508 in a drying passage 509 adapted to heat air, and a fan 510 adapted to flow the heated air to form hot air and pass through and heat the load 502.

[0099] The laundry treatment apparatus 500 further includes a control device 511 including a memory and a processor, the memory having computer instructions executable on the processor stored thereon, the processor executing the computer instructions to perform the steps of the method as described above in connection with Figure 4 the method.

[0100] The laundry treatment apparatus 500 can further include a pressure sensor 512, a detergent box 513, and a drain pump 516. The pressure sensor 512 is disposed at the bottom of the outer cylinder 504 to detect the pressure of the free water; the detergent box 513 provides laundry detergent or laundry liquid, a water supply pipe 514 supplies water to the detergent box 513, and a water inlet valve 515 is disposed on the water supply pipe 514; and the drain pump 516 is connected to a drain passage 517 to drain the free water.

[0101] In some embodiments, the laundry treatment apparatus 500 can be a drum washing machine.

[0102] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the present disclosure, even if a single embodiment is described in relation to a particular feature. The features provided in the present disclosure are intended to be illustrative rather than limiting, unless otherwise specified. In practice, one or more technical features of a dependent claim can be combined with technical features of an independent claim, and technical features from corresponding independent claims can be combined in any appropriate manner rather than only through the specific combinations listed in the claims, as technically feasible.

[0103] Although the present disclosure is disclosed as above, the present disclosure is not limited thereto. Any person skilled in the art, without departing from the spirit and scope of the present disclosure, can make various changes and modifications, and therefore the scope of protection of the present disclosure should be defined by the scope of the claims.

Claims

1. A method of wetting a load in a laundry treating apparatus, the laundry treating apparatus comprising an inner drum for containing the load, characterized in that, The method comprises: Step S110: providing a preset amount of water into the laundry treatment device to wet the load; and providing water based on the pressure of free water in the laundry treatment device, when the pressure is not more than a first pressure threshold, providing water into the laundry treatment device, and when the pressure is more than a second pressure threshold, stopping providing water, the first pressure threshold being less than the second pressure threshold, and setting a first capacity threshold of water provided in total in step S110; Step S120: detecting a first capacity of water provided in total in step S110 and step S140, and when the first capacity is equal to the first capacity threshold, starting a circulating pump to spray water on the load for a first time length; Step S130: determining whether to end the wetting process of the load based on the pressure of free water in the laundry treatment device after the circulating pump in step S120 stops working.

2. The method of claim 1, wherein, The step S110 of providing water into the laundry treatment device to wet the load comprises: Providing water into the laundry treatment device to wash the detergent and wet the load.

3. The method of claim 2, wherein, When the pressure is the first pressure threshold, the free water is 2 cm higher than the lowest position of the inner drum, and when the pressure is the second pressure threshold, the free water is 3 cm higher than the lowest position of the inner drum.

4. The method of claim 1, wherein, The step S110 of providing water into the laundry treatment device to wet the load comprises: Detecting a first capacity of water provided in the step S110, and when the first capacity is more than a first capacity threshold, stopping providing water.

5. The method of claim 4, wherein, The first capacity threshold is between 3 liters and 10 liters.

6. The method of claim 1, wherein, The first time length is between 30 seconds and 120 seconds.

7. The method of claim 1, wherein, The step S110 of providing water into the laundry treatment device to wet the load and / or the step S120 of starting the circulating pump to spray water on the load for a first time length comprises maintaining the rotating speed of the inner drum at a first rotating speed.

8. The method of claim 7, wherein, The first rotating speed is between 30 rpm and 60 rpm.

9. The method according to any one of claims 1 to 8, characterized in that, The step S130 of determining whether to end the wetting process of the load based on the pressure of free water in the laundry treatment device after the circulating pump in step S120 stops working comprises: judging whether the pressure of the free water is less than a third pressure threshold, and if not, ending the wetting process of the load, and if yes, performing the following steps: a. increasing the rotating speed of the inner drum to a second rotating speed and running for a second time length; b. decreasing the rotating speed of the inner drum to a third rotating speed and running for a third time length; c. providing a second capacity of water into the laundry treatment device in the third time length, and making the height of the free water lower than the lowest position of the inner drum; d. starting the circulating pump to spray water on the load; e. judging whether the pressure of the free water is less than the third pressure threshold, and if not, ending the wetting process of the load, and if yes, repeating steps c and d and then judging whether the pressure of the free water is less than the third pressure threshold until the pressure of the free water is judged not less than the third pressure threshold, thereby ending the wetting process.

10. The method of claim 9, wherein, The judging whether the pressure of the free water is less than the third pressure threshold comprises: detecting the pressure of the free water, and comparing whether the pressure of the free water is less than the third pressure threshold, during which the circulating pump stops working.

11. The method of claim 9, wherein, The second rotating speed is between 130 rpm and 600 rpm, and the second time length is between 30 seconds and 60 seconds.

12. The method of claim 9, wherein, The step a comprises: making the load close to the inner cylinder and forming a load ring.

13. The method of claim 12, wherein, The step b comprises: maintaining the load ring so that the load is always kept in a close-to-cylinder state.

14. The method of claim 9, wherein, The third rotating speed is between 60 rpm and 100 rpm, and the third time length is between 5 minutes and 10 minutes.

15. The method of claim 9, wherein, The steps c and / or d comprise: maintaining the rotating speed of the inner cylinder at the third rotating speed.

16. The method of claim 9, wherein, The second capacity is between 1 liter and 2 liters.

17. The method of claim 9, wherein, The third pressure threshold is between 8 pa and 100 pa.

18. A computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, storing computer instructions thereon, characterized in that, The computer instructions, when executed, perform the steps of the method of any one of claims 1-17. 19.A laundry treating apparatus comprising an inner tub for accommodating a load and a circulation pump, characterized in that, Further comprising: A control device comprising a memory and a processor, the memory having computer instructions stored thereon that are executable on the processor, the processor executing the computer instructions performing the steps of the method of any one of claims 1-17.

20. A method of wetting a load in a laundry treating apparatus, the laundry treating apparatus comprising an inner drum for receiving the load, characterized in that, The method comprises: Step S410: providing a preset amount of water into the clothes treatment device to wet the load; Step S420: continuing to provide water based on the pressure of the free water in the clothes treatment device, providing water into the clothes treatment device when the pressure does not exceed a first pressure threshold, and stopping providing water when the pressure exceeds a second pressure threshold, the first pressure threshold being less than the second pressure threshold, and setting a first capacity threshold of the total water provided in steps S410 and S420 in the process; Step S430: detecting the first capacity of the total water provided in steps S410 and S420, and starting a circulating pump to spray water onto the load for a first time length when the first capacity is less than the first capacity threshold, and then ending the wetting process of the load.

21. The method of claim 20, wherein, The step S410 of providing water into the clothes treatment device to wet the load comprises: providing water into the clothes treatment device to wash the detergent or the laundry liquid, and wet the load.

22. The method of claim 20, wherein, The first capacity threshold is between 3 liters and 10 liters.

23. The method of any one of claims 20-22, wherein, Further comprising: When the first capacity is equal to the first capacity threshold, starting a circulating pump to spray water onto the load for a first time length; Determining whether to end the wetting process of the load based on the pressure of the free water in the clothes treatment device.

24. The method of claim 23, wherein, The step of determining whether to end the wetting process of the load based on the pressure of the free water in the clothes treatment device comprises: judging whether the pressure of the free water is less than a third pressure threshold, and if not, ending the wetting process of the load, and if yes, performing the following steps: a. increasing the rotating speed of the inner cylinder to a second rotating speed and running for a second time length; b. decreasing the rotating speed of the inner cylinder to a third rotating speed and running for a third time length; c. providing a second amount of water into the laundry treating apparatus during the third time duration, and maintaining the free water level below the lowest position of the inner drum; d. starting the circulating pump to spray water onto the load; e. determining whether the free water pressure is less than a third pressure threshold, if not, ending the wetting process of the load, if yes, repeating steps c and d and then determining whether the free water pressure is less than the third pressure threshold until the free water pressure is determined to be not less than the third pressure threshold, thereby ending the wetting process.

25. The method of claim 24, wherein, The determining whether the free water pressure is less than the third pressure threshold comprises detecting the free water pressure, and comparing whether the free water pressure is less than the third pressure threshold, during which the circulating pump is stopped.

26. The method of claim 24, wherein, The step a comprises maintaining the load against the inner drum and forming a load ring.

27. The method of claim 26, wherein, The step b comprises maintaining the load ring so that the load is always maintained against the drum.

28. The method of claim 24, wherein, The step c and / or d comprises maintaining the inner drum at the third rotational speed.

29. The method of claim 24, wherein, The third pressure threshold is between 8 pa and 80 pa.

30. A computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, storing computer instructions thereon, wherein, The computer instructions, when executed, perform the steps of the method of any one of claims 20 to 29. 31.A laundry treating apparatus comprising an inner tub for accommodating a load, characterized by, Also comprising: a control device comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, the processor, when executing the computer instructions, performing the steps of the method of any one of claims 20 to 29.

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