WO2020015351A1

WO2020015351A1 - Cleaning device, washing machine, and detergent delivery method

Info

Publication number: WO2020015351A1
Application number: PCT/CN2019/073967
Authority: WO
Inventors: 衣震旭; 杨洪永; 吕钟朋; 林子豪; 张国杰; 刘建; 蒋必盛
Original assignee: 珠海格力电器股份有限公司
Priority date: 2018-07-20
Filing date: 2019-01-30
Publication date: 2020-01-23
Also published as: EP3795735A4; JP2021520956A; CN108677457B; CN108677457A; EP3795735A1; JP7119123B2

Abstract

The present application provides a cleaning device, a washing machine, and a detergent delivery method. The cleaning device comprises a first accommodation part, a first measurement part, and a control part; the first accommodation part is provided with a water inlet part and a water outlet part; at least part of the first measurement part is disposed in the first accommodation part; the first measurement part can be used for measuring a flow speed of a liquid flowing into the first accommodation part from the water inlet part; the control part is electrically connected to the first measurement part; the control part is used for controlling a water inlet duration of the water inlet part. At least part of the first measurement part is disposed in the first accommodation part to measure the flow speed of the liquid flowing into the first accommodation part, and then the control part further controls the water inlet duration of the water inlet part of the first accommodation part to control the total water inlet amount; such a configuration enables that the water inlet amount of the washing machine is accurately controlled and thus contributes to full mixing of a detergent, thereby improving the washing effect of the washing machine.

Description

Cleaning device, washing machine and method for putting detergent

Related applications

This application claims priority from a Chinese patent application filed on July 20, 2018, with application number 201810804441.5, entitled "Washing Device, Washing Machine, and Method for Delivering Detergent", which is hereby incorporated by reference in its entirety.

Technical field

The present application relates to the technical field of washing machine equipment, and in particular, to a washing device, a washing machine, and a method for placing detergent.

Background technique

Traditional washing machines cannot accurately control the amount of water entering the washing machine, nor can they detect the hardness of the incoming water. The automatic detergent dispenser of a conventional washing machine can only simply convert the detergent dosage based on the weight of the laundry to complete the automatic dispensing, but ignores the influence of the amount of water and the hardness of the water on the detergent dosage, resulting in a poor washing effect of the washing machine. .

Summary of the invention

The main purpose of the present application is to provide a washing device, a washing machine and a detergent dispensing method to solve the problem of poor washing effect of the washing machine in the prior art.

In order to achieve the above object, according to an aspect of the present application, a cleaning device is provided, including: a first receiving part, the first receiving part having a water inlet part and a water outlet part; a first detection part, at least part of the first detection part It is arranged in the first accommodating part, and the first detecting part can be used for detecting the flow velocity of the liquid flowing from the water inlet part into the first accommodating part; the control part, the control part is electrically connected with the first detection part, and the control part is used to control the Duration of water ingress.

Optionally, the water outlet includes: a first water outlet, the first water outlet is opened on the cavity wall of the first receiving part; a second water outlet, the second water outlet is opened on the cavity wall of the first receiving part, and the second The water outlet is disposed adjacent to the first water outlet.

Optionally, the cleaning device further includes a siphon, one end of the siphon is in communication with the second water outlet, and the other end of the siphon is used for draining the residual water in the first accommodating part.

Optionally, the first detection section includes: a detection probe, which is disposed on the inner cavity wall of the first receiving section, the detection probe is electrically connected to the control section, and the detection probe is used to detect the flow velocity and And / or hardness.

According to another aspect of the present application, there is provided a cleaning device, including: a first accommodating part, the first accommodating part having a water inlet part and a water outlet part; a first detection part, at least part of the first detection part is disposed on the first In the accommodating section, the first detection section can be used to detect the flow velocity and hardness of the liquid flowing from the water inlet section into the first accommodating section; the control section, the control section is electrically connected to the first detection section, and the control section is used to control the water inlet of the water inlet section The duration and determine the total amount of water in the liquid; the dispenser, the dispenser is electrically connected to the control, and the controller can control the dispenser to release detergent into the water outlet.

Optionally, the loading section further includes a weighing section, the weighing section is connected to the washing tub, the weighing section is electrically connected to the control section, and the weighing section is used to weigh the items to be washed placed in the washing tub.

According to another aspect of the present application, there is provided a washing machine including a washing device, and the washing device is the aforementioned washing device.

Optionally, the washing machine includes a weighing part, the weighing part is connected to the washing tub, the weighing part is electrically connected to the control part, and the weighing part is used for weighing the items to be washed placed in the washing tub.

Optionally, the washing machine further includes a dispensing portion, which is electrically connected to the control portion, and the dispensing portion is configured to release the detergent into the water outlet portion.

Optionally, the placing portion includes a second receiving portion, the second receiving portion is disposed adjacent to the first receiving portion, the second receiving portion is in communication with the water outlet portion, and the second receiving portion is used for storing detergent.

Optionally, the dropping portion further includes a dropping tube, a first end of the dropping tube is in communication with the second receiving portion, and a second end of the dropping tube is in communication with the water outlet portion.

Optionally, the dispensing section further includes a second detection section, the second detection section is connected to the second storage section, and the second detection section is configured to detect the storage amount of the detergent in the second storage section.

Optionally, the dispensing unit further includes a dispensing pump, which is disposed adjacent to the second accommodating portion, the dispensing pump is electrically connected to the control portion, and the dispensing pump is used to convey the detergent in the second accommodating portion to the water outlet portion.

According to another aspect of the present application, a method for putting detergent into a washing machine is provided. The method is used to put detergent into the washing machine. The method includes the following steps: Step S10: After the weighing section weighs the laundry, The control part controls the water inlet time according to the weight of the laundry to be washed and the flow rate of the liquid detected by the first detection part; Step S20: the control part according to the hardness of the liquid detected by the first detection part, the total amount of water in the liquid and the weight The weight-controlled dispensing pump weighed by the weighing section puts a preset amount of detergent into the water outlet.

Optionally, step S10 includes: step S11: the weighing section determines the total water intake after weighing the laundry; step S12: the control section determines the water intake according to the volume of the first storage section and the time when the first storage section is filled with liquid Speed; step S13: the control unit determines the total water inlet time required for the washing bucket through the total water inlet volume and the water inlet speed, and controls the opening time of the water inlet until the opening time of the water inlet is equal to the total water inlet required for the washing bucket .

By applying the technical solution of the present application, the at least part of the first detection portion is provided in the first receiving portion to detect the flow rate of the liquid flowing through the first receiving portion, and then the water inflow portion of the first receiving portion is controlled by the control portion. The water time is controlled to control the total amount of water inflow. This setting allows the washing machine to accurately control the amount of water inflow, so that the amount of water in the washing machine and the detergent are fully integrated, thereby improving the washing effect of the washing machine.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which form a part of this application, are used to provide further understanding of the application. The schematic embodiments of the application and the descriptions thereof are used to explain the application, and do not constitute an improper limitation on the application. In the drawings:

FIG. 1 is a schematic cross-sectional structure diagram of an embodiment of a cleaning device according to the present application; FIG.

2 is a schematic structural diagram of a first embodiment of a washing machine according to the present application;

3 is a schematic structural diagram of a second embodiment of a washing machine according to the present application;

FIG. 4 shows a first flowchart of the working principle of a washing machine according to the present application; FIG.

FIG. 5 shows a second schematic flow chart of the working principle of a washing machine according to the present application.

Reference signs:

10 first receiving part; 11 water inlet part; 12 water outlet part; 121 first water outlet; 122 second water outlet; 13 siphon;

20First detection section; 21 detection probe;

30 第二收部； 30 second accommodation;

40 release section; 41 release tube; 42 release pump; 43 second detection section.

detailed description

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The application will be described in detail below with reference to the drawings and embodiments.

It should be noted that the terminology used herein is only for describing specific embodiments, and is not intended to limit the exemplary embodiments according to the present application. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise, and it should also be understood that when the terms "including" and / or "including" are used in this specification, they indicate There are features, steps, operations, devices, components, and / or combinations thereof.

It should be noted that the terms “first” and “second” in the specification, claims, and drawings of the application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. Furthermore, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or device that includes a series of steps or units need not be limited to those explicitly listed Those steps or units may instead include other steps or units not explicitly listed or inherent to these processes, methods, products or equipment.

For the convenience of description, spatially relative terms such as "above", "above", "above", "above", etc. can be used here to describe as shown in the figure Shows the spatial position relationship between one device or feature and other devices or features. It should be understood that spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device as described in the figures. For example, if a device in the figure is turned over, devices described as "above" or "above" other devices or constructions will be positioned "below the other devices or constructions" or "below" Other devices or constructs. " Thus, the exemplary term "above" may include both directions "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or at other orientations), and the relative description of space used here is explained accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of this application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the drawings, for the sake of clarity, it is possible to expand The thicknesses of the layers and regions are described, and the same devices are denoted by the same reference numerals, and a description thereof will be omitted.

With reference to FIGS. 1 to 5, a cleaning device is provided according to an embodiment of the present application.

Specifically, as shown in FIG. 1, the cleaning device includes a first accommodating portion 10, a first detection portion 20, and a control portion. The first accommodating portion 10 includes a water inlet portion 11 and a water outlet portion 12. The portion 20 is disposed in the first accommodating portion 10. The first detection portion 20 can be used to detect the flow rate of the liquid flowing from the water inlet portion 11 into the first accommodating portion 10. The control portion is electrically connected to the first detection portion 20, and the control portion is used for The water inlet 11 is controlled to open or close.

In this embodiment, at least part of the first detection portion is disposed in the first receiving portion to detect the flow rate of the liquid flowing in the first receiving portion, and then the water inflow of the water receiving portion of the first receiving portion through the control portion The duration is controlled to control the total amount of water inflow. This setting allows the washing machine to accurately control the amount of water inflow, so that the amount of water in the washing machine and the detergent are fully integrated, thereby improving the washing effect of the washing machine.

In this embodiment, the water outlet portion 12 includes a first water outlet 121 and a second water outlet 122. The first water outlet 121 is opened on the cavity wall of the first receiving portion 10, and the second water outlet 122 is opened on the first receiving portion. On the cavity wall of 10, a second water outlet 122 is disposed adjacent to the first water outlet 121. The first water outlet 121 is used to introduce the liquid entered by the water inlet 11 into the washing tub. When the water inlet is completed, the water inlet 11 is closed. The second water outlet is used to carry the remaining liquid in the first accommodation portion from the second The water outlet is led out, so that the liquid in the first accommodating part is fully discharged into the washing tub, so that the washing machine accurately controls the amount of water entering.

Optionally, the cleaning device further includes a siphon tube 13. One end of the siphon tube 13 is in communication with the second water outlet 122, and the other end of the siphon tube 13 is used to discharge residual water in the first receiving portion 10. In this way, when the water supply ends, the residual liquid in the first accommodating part is discharged to the other end through one end of the siphon tube, and then into the washing tub, so that the washing machine can accurately control the water supply amount.

In this embodiment, the first detection section 20 includes a detection probe 21, which is disposed on the inner cavity wall of the first accommodation section 10. The detection probe 21 is electrically connected to the control section. The detection probe 21 is used to detect the flow through. Of course, the flow velocity or hardness of the liquid in the water part 11 can also be detected at the same time as the flow velocity and hardness of the liquid flowing in the water inlet part 11. This arrangement enables the detection probe to transmit the detected information to the control section, and the control section can open or close the water inlet section 11 according to the detection information.

In this embodiment, the cleaning device includes a first accommodating portion 10, a first detecting portion 20, a control portion, and a dispensing portion 40. The first accommodating portion 10 has a water inlet portion 11 and a water outlet portion 12, and at least part of the first detection The portion 20 is disposed in the first accommodating portion 10. The first detection portion 20 can be used to detect the flow velocity and hardness of the liquid flowing from the water inlet portion 11 into the first accommodating portion 10. The control portion is electrically connected to the first detection portion 20 to control The control unit is used to control the water inflow time of the water inlet unit 11 and determine the total water inflow amount of the liquid. The loading unit 40 is electrically connected to the control unit. The control unit can control the loading unit 40 to put detergent into the water discharge unit 12. The control unit controls the dispensing pump 42 to add a predetermined amount of detergent to the water outlet unit 12 based on the hardness of the liquid detected by the first detection unit 20 and the total amount of water in the liquid.

Optionally, the loading section further includes a weighing section, the weighing section is connected to the washing tub, the weighing section is electrically connected to the control section, and the weighing section is used to weigh the items to be washed placed in the washing tub. Weigh the laundry to be weighed through the weighing section, and calculate the total amount of water required. The control unit controls the dispensing pump 42 to add a predetermined amount of detergent to the water outlet unit 12 based on the hardness of the liquid detected by the first detection unit 20, the total amount of water in the liquid, and the weight of the laundry to be washed weighed by the weighing unit.

The cleaning device of the above embodiment can also be used in the technical field of washing machine equipment, that is, according to another aspect of the present application, a washing machine is provided. The air conditioner includes a cleaning device, and the cleaning device is the cleaning device of the above embodiment.

In this embodiment, the washing machine includes a weighing part, the weighing part is connected to the washing tub, the weighing part is electrically connected to the control part, and the weighing part is used for weighing the items to be washed placed in the washing tub. In this way, the weighing unit feeds back the obtained information to the control unit in a timely manner after weighing the laundry to be washed, and then the control unit controls the amount of water in the water inlet 11 according to the weight of the laundry.

As shown in FIG. 2 and FIG. 3, the washing machine further includes a dispenser portion 40, which is electrically connected to the control portion. The dispenser portion 40 is used to release detergent into the water outlet portion 12. The control part can accurately put the required amount of detergent into the washing tub according to the weight of the laundry to be washed, the total amount of water inflow and the water hardness.

In this embodiment, the placing section 40 includes a second accommodating section 30. The second accommodating section 30 is disposed adjacent to the first accommodating section 10. The second accommodating section 30 is in communication with the water outlet section 12. To store detergent. This arrangement is convenient for the second storage portion 30 to transport the stored detergent into the first storage portion 10, so that the detergent and the liquid in the first storage portion 10 are fully fused and flow into the washing tub.

In addition, the dropping portion 40 further includes a dropping tube 41. A first end of the dropping tube 41 is in communication with the second accommodating portion 30, and a second end of the dropping tube 41 is in communication with the water outlet portion 12. The second accommodating part conveys the detergent to the water outlet part through the delivery pipe 41.

In this embodiment, the dispensing section 40 further includes a second detection section 43, which is connected to the second storage section 30. The second detection section 43 is configured to detect the storage amount of the detergent in the second storage section 30. . The second detecting section 43 detects the detergent stored in the second accommodating section 30. When the shortage of the detergent in the second accommodating section 30 is lower than a preset value, the control section will remind the user to add the warning lamp connected to the control section Detergent.

In this embodiment, the dispensing unit 40 further includes a dispensing pump 42, which is disposed adjacent to the second accommodation portion 30. The delivery pump 42 is electrically connected to the control portion. The delivery pump 42 is used to place the inside of the second accommodation portion 30. The detergent is sent to the water outlet 12. The setting is such that the control unit controls the dispensing pump to release the required proportion of the detergent stored in the second accommodating unit 30 into the water outlet unit 12 according to the weight of the laundry to be washed, the total amount of water inflow and the water hardness.

The present application discloses a method for putting detergent into a washing machine. The method includes the following steps: Step S10: After the weighing part weighs the laundry to be washed, the control part according to the weight of the laundry to be washed and the liquid detected by the first detection part 20 Step S20: The control unit controls the feeding pump 42 according to the hardness of the liquid detected by the first detection unit 20, the total amount of water in the liquid, and the weight of the laundry to be weighed by the weighing unit. A predetermined amount of detergent is injected into the water outlet 12. Step S10 includes: Step S11: After the weighing section weighs the laundry, determine the total water inflow; Step S12: The control section determines the water inflow based on the volume of the first storage portion 10 and the time when the liquid in the first storage portion 10 is filled. Speed; step S13: the control unit determines the total water inlet time required for the washing tub through the total water inlet volume and the water inlet speed, and controls the opening time of the water inlet 11 until the opening time of the water inlet 11 is equal to the water inlet required by the washing bucket Total duration.

In this application, the control unit controls the total time of the water inflow of the water inflow unit 11 to precisely control the total amount of water inflow. The first detection unit controls the amount of detergent more accurately by detecting the hardness of the tap water.

In the prior art, the liquid level detection technology in the washing tub cannot rule out the error of the water absorption of the clothes, which leads to inaccurate water intake control. Moreover, the traditional washing machine ignores the hardness of the tap water quality and cannot consider the ions (Ca, Mg, Cl, etc.) in the tap water for washing Consumption of active ingredients of the agent, so that the washing effect cannot be achieved; the technical solution of this application can control the amount of detergent by accurately converting physical quantities such as the weight of the laundry, the total amount of water inflow, and the hardness of the water quality, so as to improve the washing effect, and Reducing the amount of detergent under the same washing effect can save washing costs and reduce environmental pollution caused by discharged wastewater.

As shown in FIG. 2, the washing machine includes a water inlet detection module and a detergent dispensing module.

As shown in FIG. 1, the cleaning device includes a water inlet pipe of the water inlet section 11, a detection probe 21 of the first detection section 20, a water inlet downstream passage at the first water outlet 121, a siphon tube 13, and a first receiving section 10; When the tap water is injected into the first containing part 10 from the water inlet pipe, the control part controls the first containing part 10 to be filled with water, and the liquid level starts timing from the contact to the detection probe 21. The contact elapsed time is t. Constant, can quickly calculate the water flow velocity v; by calculating the total water consumption U, U / v = T is the total water intake time, by controlling the total time T to achieve the control of the total water intake U; In addition, the detection probe 21 is in contact with Water hardness can be detected at the same time that water is detected; when the water is fed in, the remaining water in the first receiving part 10 will be drained through the siphon 13 to avoid affecting the accuracy of the next detection flow; the siphon 13 There will always be water passing through, but the downstream of the siphon tube 13 is connected to the washing tub and will not affect the total water intake.

As shown in FIG. 3, the washing machine further includes a second accommodating part 30, a delivery pump 42, a second detection part 43, and a delivery pipe 41. The physical quantities are determined by intelligent algorithms based on the weight of the items to be washed, the total amount of water, and the hardness of the water. The amount of the detergent to be put is sucked out of the second receiving part 30 by the loading pump 42 into the loading pipe 41. The loading pipe 41 is connected to the channel of the water inlet 11 or the water outlet 12 of the cleaning device, and the detergent is realized by the water flow The second detection unit 43 detects whether the liquid level of the detergent in the second storage unit 30 has reached the minimum liquid level threshold. When the detergent in the second storage unit 30 is insufficient, the controller detects that User detergent needs to be added.

As shown in Fig. 4 and Fig. 5, the information obtained by weighing the laundry to be controlled by the weighing section is used to control the total amount of incoming water. The total amount of incoming water is determined by the incoming water flow rate and the duration of the incoming water. After the total amount of water and water hardness, only the algorithm can be used to determine the amount of detergent to be put in the final washing machine.

In addition to the above, it should also be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refers to the specific features, structures, or Features are included in at least one embodiment as broadly described in this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure, or characteristic in conjunction with any one of the embodiments, what is claimed is that the realization of such feature, structure, or characteristic in combination with other embodiments also falls within the scope of the present application.

In the above embodiments, the description of each embodiment has its own emphasis. For a part that is not described in detail in one embodiment, reference may be made to related descriptions in other embodiments.

The above description is only a preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, this application may have various modifications and changes. Any modification, equivalent replacement, or improvement made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

A cleaning device, comprising:

A first receiving portion (10), the first receiving portion (10) having a water inlet portion (11) and a water outlet portion (12);

A first detection section (20), at least a part of the first detection section (20) is disposed in the first accommodation section (10), and the first detection section (20) may be used to detect water entering from the The flow velocity of the liquid flowing into the first receiving part (10) from the part (11);

A control unit, the control unit is electrically connected to the first detection unit (20), and the control unit is configured to control a water inlet duration of the water inlet unit (11).
The cleaning device according to claim 1, wherein the water outlet (12) comprises:

A first water outlet (121), and the first water outlet (121) is opened on the cavity wall of the first receiving portion (10);

A second water outlet (122), the second water outlet (122) is opened on the cavity wall of the first receiving portion (10), and the second water outlet (122) and the first water outlet ( 121) are arranged adjacently.
The cleaning device according to claim 2, wherein the cleaning device further comprises:

A siphon tube (13), one end of the siphon tube (13) is in communication with the second water outlet (122), and the other end of the siphon tube (13) is used to discharge residual water in the first accommodation portion (10) .
The cleaning device according to claim 1, wherein the first detection unit (20) comprises:

A detection probe (21), the detection probe (21) is disposed on an inner cavity wall of the first accommodation portion (10), the detection probe (21) is electrically connected to the control portion, and the detection probe ( 21) For detecting the flow velocity and / or hardness of the liquid flowing through the water inlet (11).
A cleaning device, comprising:

A first receiving portion (10), the first receiving portion (10) having a water inlet portion (11) and a water outlet portion (12);

A first detection section (20), at least a part of the first detection section (20) is disposed in the first accommodation section (10), and the first detection section (20) may be used to detect water entering from the The flow velocity and hardness of the liquid flowing into the first receiving portion (10) from the portion (11);

A control unit, which is electrically connected to the first detection unit (20), the control unit is configured to control a water inlet duration of the water inlet unit (11) and determine a total water inlet volume of the liquid;

A dispensing unit (40), the dispensing unit (40) is electrically connected to the control unit, and the control unit can control the dispensing unit (40) to put detergent into the water outlet unit (12).
The cleaning device according to claim 5, wherein the dispensing section further comprises: a weighing section, the weighing section is connected to the washing tub, the weighing section is electrically connected to the control section, and The weighing section is used for weighing the items to be washed placed in the washing tub.
A washing machine includes a washing device, wherein the washing device is the washing device according to any one of claims 1 to 6.
The washing machine according to claim 7, wherein the washing machine comprises:

Weighing part, the weighing part is connected with the washing tub, the weighing part is electrically connected with the control part, and the weighing part is used for weighing the items to be washed placed in the washing tub .
The washing machine according to claim 7, further comprising:

A dispenser (40), which is electrically connected to the control unit, and the dispenser (40) is used to release detergent into the water outlet (12).
The washing machine according to claim 9, characterized in that the placing part (40) comprises:

A second accommodation portion (30), the second accommodation portion (30) is disposed adjacent to the first accommodation portion (10), and the second accommodation portion (30) is connected to the water outlet portion (12) The second receiving portion (30) is used for storing the detergent.
The washing machine according to claim 10, wherein the placing part (40) further comprises:

A drop tube (41), a first end of the drop tube (41) is in communication with the second receiving portion (30), and a second end of the drop tube (41) is connected to the water outlet portion (12) through.
The washing machine according to claim 10, wherein the placing part (40) further comprises:

A second detection section (43), the second detection section (43) is connected to the second storage section (30), and the second detection section (43) is configured to detect the second storage section (30) ).
The washing machine according to claim 10, wherein the placing part (40) further comprises:

A delivery pump (42), which is disposed adjacent to the second accommodation portion (30), the delivery pump (42) is electrically connected to the control portion, and the delivery pump (42) The detergent is used for conveying the detergent in the second accommodation part (30) to the water outlet part (12).
A method for putting detergent into a washing machine, the method for putting detergent into the washing machine according to any one of claims 7 to 13, wherein the method includes the following steps:

Step S10: After the weighing section weighs the laundry to be washed, the control section controls the water inlet time (11) for the water inlet time according to the weight of the laundry to be washed and the liquid flow rate detected by the first detection section (20);

Step S20: The control unit controls the feeding pump (42) to feed the water outlet (12) according to the hardness of the liquid detected by the first detection unit (20), the total amount of water in the liquid and the weight of the laundry to be washed weighed by the weighing unit. Preset amount of detergent.
The method according to claim 14, wherein the step S10 comprises:

Step S11: After the weighing section weighs the laundry, determine the total water inflow;

Step S12: the control unit determines the water inlet speed according to the volume of the first accommodating portion (10) and the time that the first accommodating portion (10) is filled with liquid;

Step S13: The control unit determines the total water inlet time required for the washing bucket through the total water inlet volume and the water inlet speed, and controls the opening time of the water inlet (11) until the opening time of the water inlet (11) is equal to The total duration of water inflow required for the washing tub.