Control method of laundry treating apparatus and laundry treating apparatus

By using a control method in clothing processing equipment to calculate the amount of water softener to be added based on the weight and material of the clothing, the problem of inaccurate control of washing water hardness is solved, achieving resource conservation and clothing protection.

CN122406486APending Publication Date: 2026-07-17QINGDAO HAIER WASHING ELECTRIC APPLIANCES CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QINGDAO HAIER WASHING ELECTRIC APPLIANCES CO LTD
Filing Date
2025-01-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technology cannot precisely control the hardness of washing water, resulting in water that is too hard or too soft, causing waste of resources and damage to clothes.

Method used

By using the control methods of the garment processing equipment, the amount of water softener to be added is accurately calculated based on the weight and material of the garment to be washed, the water hardness, and the softening performance value of the water softener, ensuring that the hardness of the washing water reaches the appropriate range.

Benefits of technology

It achieves precise control of the hardness of the washing water, saving water softener and water resources, and protecting clothes from hardening and yellowing.

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Abstract

This invention discloses a control method and the garment processing device, belonging to the field of intelligent water hardness control technology for washing machines. The method includes: obtaining the inflow of washing water based on the weight of the garments to be washed; acquiring the water hardness of the washing water and calculating the hardness difference between the washing water hardness and a set water hardness; determining the dosage of water softener based on the inflow of water, the hardness difference, and the softening performance value of the water softener; and dispensing the water softener according to the dosage. This invention accurately calculates the dosage of water softener based on multiple parameters such as the inflow of washing water, the hardness difference, and the softening performance value, and then dispenses the water softener accordingly, ensuring that the water hardness of the washing water meets the requirements of the garments to be washed, thus saving water softener.
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Description

Technical Field

[0001] This invention belongs to the field of intelligent water hardness control technology for washing machines. Specifically, it relates to a control method and a garment processing device. Background Technology

[0002] The hardness of washing water has a significant impact on laundry. This is because hard water contains higher levels of minerals, such as calcium and magnesium ions. When these minerals react with detergent, they produce water-insoluble precipitates. These precipitates adhere to clothing, causing it to become stiff, yellow, and even damage the fabric fibers. Simultaneously, hard water combines with detergent surfactants to form soap scum, reducing the amount of surfactants in the washing water, decreasing cleaning power, and resulting in detergent waste.

[0003] Currently, the method for controlling the hardness of washing water involves manually or non-automatically adding water softener. However, given the differences in washing water in different areas, this method suffers from the problem of using too much or too little. Too much softener causes rinsing difficulties and wastes resources, while too little softener fails to achieve the desired water hardness. Therefore, existing technology has not yet effectively adjusted the hardness of washing water to a suitable range.

[0004] In view of this, the present invention is hereby proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a control method and garment processing equipment for garment processing. The method accurately calculates the amount of water softener to be added based on multiple parameters such as the weight of the garment to be washed, the hardness of the washing water, and the softening performance value of the water softener, thereby saving the amount of water softener to be added.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0007] A method for controlling a garment processing device includes:

[0008] The amount of water to be used for washing is determined based on the weight of the clothes to be washed;

[0009] Obtain the water hardness of the washing water and calculate the hardness difference between the water hardness of the washing water and the set water hardness.

[0010] The dosage of water softener is determined based on the influent flow rate, the hardness difference, and the softening performance of the water softener.

[0011] Add water softener according to the stated dosage.

[0012] Further, the dosage is determined based on the influent volume, the hardness difference, and the softening performance value, including:

[0013] The required water softening dosage per unit volume of influent is obtained based on the hardness difference and the softening performance value.

[0014] The dosage is obtained by multiplying the influent volume and the water softening dosage required per unit influent volume.

[0015] Furthermore, the formula for calculating the required water softening dosage per unit of influent volume is as follows:

[0016]

[0017] Where w1 represents the amount of water softening agent required per unit volume of incoming water, k represents the softening performance value, and Δh represents the hardness difference.

[0018] Furthermore, after obtaining the water hardness of the washing water, the method further includes:

[0019] Determine if the hardness of the washing water is greater than the set hardness;

[0020] If so, calculate the difference between the hardness of the washing water and the set hardness, and determine the dosage of the water softener based on the influent volume, the hardness difference, and the softening performance of the water softener.

[0021] If not, then the amount of water softener added is determined to be zero.

[0022] Further, the step of determining the amount of washing water based on the weight of the clothes to be washed includes:

[0023] Identify the material of the clothes to be washed;

[0024] Determine the ratio of the weight of the clothes to the amount of water to be washed based on the material of the clothes to be washed;

[0025] The water intake is determined based on the weight of the clothes to be washed and the stated ratio.

[0026] Furthermore, when the material of the garment to be washed is identified as containing multiple materials, the method further includes:

[0027] Determine the water absorption rate of each of the multiple materials;

[0028] The water absorption rate of the garment to be washed is determined based on the water absorption rate of various materials;

[0029] The ratio is determined based on the water absorption rate of the clothes to be washed.

[0030] Furthermore, determining the water absorption rate of the garment to be washed based on the water absorption rates of various materials includes:

[0031] Choose the material with the highest absorbency from the various materials as the absorbency of the garment to be washed.

[0032] Furthermore, the method also includes:

[0033] Obtain the set concentration of the detergent;

[0034] The amount of detergent to be added is determined based on the amount of water entering the washing room and the set concentration.

[0035] Add detergent according to the stated dosage.

[0036] Furthermore, the method also includes:

[0037] The amount of detergent to be added is determined based on the weight of the clothes to be washed;

[0038] Add detergent according to the stated dosage.

[0039] The present invention also provides a garment processing device that applies a control method.

[0040] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0041] 1. This invention is based on the characteristic that different materials of laundry have different water absorption rates. The ratio of the weight of the laundry to the amount of washing water is set according to this water absorption rate. Therefore, after obtaining the weight of the laundry, the amount of washing water is calculated using this weight and ratio, ensuring that the obtained amount of water meets the water requirements of the laundry and conserving water resources.

[0042] 2. The present invention also accurately calculates the dosage of water softener based on multiple parameters such as the softening performance value of water softener, the amount of water entering the washing water and the water hardness, and then adds water softener according to the dosage to ensure that the water hardness of the washing water meets the water hardness requirements of the clothes to be washed, thus saving water softener. Attached Figure Description

[0043] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0044] Figure 1 This is a flowchart of a control method for a garment processing device according to the present invention;

[0045] Figure 2 This is a flowchart illustrating the method of executing the washing procedure in an embodiment of the present invention.

[0046] Figure 3This is a flowchart illustrating the method of performing the rinsing procedure in an embodiment of the present invention.

[0047] Figure 4 This is a structural diagram of a garment processing device according to the present invention;

[0048] Figure 5 This is a system block diagram of a garment processing device according to the present invention, used for executing a control method.

[0049] Explanation of reference numerals in the attached diagram: 1. Washing tub; 2. Water inlet pipe; 3. Water inlet valve; 4. Weight sensor; 5. Water hardness detection module; 6. Near-infrared sensor; 7. Flow meter; 8. Main control board.

[0050] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will be described in conjunction with the appendices in the embodiments of the present invention. Figure 1-5 The technical solutions in the embodiments are clearly and completely described below. The embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0052] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this invention 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 processes, methods, products or devices.

[0053] This invention provides a control method for a garment processing device. This method is applied during the washing and / or rinsing processes of the garment processing device, aiming to reduce the water hardness of the wash water while conserving water softener and avoiding resource waste. The garment processing device of this invention can be any of a washing machine or a washer-dryer combo, or other intelligent devices with washing and / or rinsing processes. Figure 1 As shown, the control method for the garment processing equipment is as follows:

[0054] Step S101: Determine the amount of water to be used for washing based on the weight of the clothes to be washed.

[0055] First, the user places the clothes to be washed into the garment handling device, such as into the inner drum of a washing machine. After the garment handling device detects the clothes and receives the washing and / or rinsing operations input by the user on the control panel, it generates a program execution command. That is, the garment handling device receives a program execution command, which can be any one of the following: execute a washing program, execute a rinsing program, or execute a washing program and a rinsing program.

[0056] After receiving the program execution command, the weight of the clothes to be washed is first detected using the existing weight sensor 4 inside the garment processing equipment. In actual use, the clothes can also be weighed before being put into the garment processing equipment. If weighed beforehand, the weight of the clothes can be obtained directly after they are put into the equipment.

[0057] Simultaneously, the material of the garment to be washed is identified using the existing material identification sensors within the garment processing equipment. These sensors include, but are not limited to, near-infrared sensor 6 and fabric texture sensor. The preferred material identification sensor in this invention is near-infrared sensor 6. Near-infrared sensor 6 uses near-infrared spectroscopy technology. Based on the characteristic that different materials reflect or absorb light waves at different wavelengths, it detects the light waves reflected or transmitted by the garment to be washed, converts the detected light waves into transmittable data, and uploads it to the cloud. The cloud performs big data comparison, matches the closest spectral line segment, and identifies the material corresponding to the closest spectral line segment as the material of the garment to be washed. The identification result is then returned to the garment processing equipment. Alternatively, the identification algorithm can be configured in the existing main control board 8 of the garment processing equipment. After near-infrared sensor 6 transmits the detection data to the main control board 8, the main control board 8 determines the material of the garment to be washed based on the detection data. Similarly, the material of the garment to be washed can be identified before it is put into the washing equipment.

[0058] Generally, different materials have different water absorption rates for laundry; for example, pure cotton laundry has a higher water absorption rate than silk laundry. To provide an appropriate amount of washing water and conserve water resources, this invention pre-sets a ratio related to the water absorption rate. This ratio represents the proportion of the weight of the laundry to the amount of washing water. Hereinafter, this ratio will be referred to as the "ratio." The higher the water absorption rate of the laundry, the greater the amount of washing water required for the same weight, and the smaller the corresponding ratio.

[0059] In a specific example, a water absorption rate threshold, a first ratio, and a second ratio are set, with the first ratio being less than the second ratio. After obtaining the water absorption rate of the garment to be washed, the water absorption rate is compared with the water absorption rate threshold. If the water absorption rate of the garment to be washed is greater than the water absorption rate threshold, the first ratio is selected; otherwise, if the water absorption rate of the garment to be washed is less than or equal to the water absorption rate threshold, the second ratio is selected. For example, if the first ratio and the second ratio are 1 / 6 and 1 / 4 respectively, when the water absorption rate of the garment to be washed is greater than the water absorption rate threshold, 1 / 6 is selected, meaning the ratio between the weight of the garment to the amount of washing water is 1 / 6; when the water absorption rate of the garment to be washed is less than or equal to the water absorption rate threshold, 1 / 4 is selected, meaning the ratio between the weight of the garment to the amount of washing water is 1 / 4.

[0060] In another specific example, following the logic that water absorption rate is negatively correlated with the ratio, a corresponding ratio is set for each water absorption rate. Therefore, after determining the water absorption rate of the material of the garment to be washed, the ratio corresponding to the water absorption rate is directly matched.

[0061] Furthermore, if the above identification result indicates that the garment to be washed contains multiple materials, then first determine the water absorption rate of each material, and then select the highest water absorption rate from among the multiple materials as the water absorption rate of the garment to be washed. Alternatively, the average water absorption rate of the multiple materials can be calculated and used as the average water absorption rate of the garment to be washed. Finally, the proportion is obtained by matching the water absorption rates of the garment to be washed.

[0062] Based on the weight and proportion of the clothes to be washed, the amount of water to be used for washing is obtained by dividing the weight of the clothes to be washed by the proportion.

[0063] Step 102: Obtain the water hardness of the washing water and calculate the hardness difference between the water hardness of the washing water and the set water hardness.

[0064] The water hardness of the wash water can be measured either before or after the wash water enters the garment processing equipment. The measurement is performed using a water hardness detection module 5. This water hardness detection module 5 can be installed inside or outside the garment processing equipment, as long as it can detect the water hardness of the wash water. Specifically, after detecting the water hardness of the wash water, the water hardness detection module 5 transmits the detection result to the main control board 8 of the garment processing equipment.

[0065] After obtaining the water hardness of the washing water, first compare the relationship between the water hardness of the washing water and the set water hardness. The set water hardness is pre-set and can be obtained through a limited number of experimental analyses. For example, when the water hardness is between 2.3-3.5 GPG, the damage to the clothes is less than that outside this range. Therefore, the set water hardness can be selected from 2.3-3.5 GPG. The following example uses a set water hardness of 3.5 GPG.

[0066] Specifically, when the hardness of the washing water is greater than the set hardness, it means that the current hardness of the washing water is not suitable for washing or rinsing the clothes. The precise amount of water softener needs to be calculated to reduce the hardness of the washing water to the set hardness before washing or rinsing. Therefore, when the hardness of the washing water is greater than the set hardness, the difference between the hardness of the washing water and the set hardness needs to be calculated. This difference represents the amount of hardness that needs to be reduced by the water softener. After obtaining this difference, proceed to step S103. Otherwise, when the hardness of the washing water is less than or equal to the set hardness, it means that the current hardness of the washing water is suitable for washing or rinsing the clothes. No water softener needs to be added, and the amount of water softener added can be directly set to zero.

[0067] Step S103: Determine the dosage of water softener based on the influent flow rate, hardness difference, and softening performance value of the water softener.

[0068] The softening performance value of a water softener reflects its softening ability; specifically, it represents the reduction in water hardness when 1g of water softener is dissolved in 1L of wash water. The softening performance value can be a value input by the user through a user terminal or a value pre-set in the garment processing equipment, such as a mobile phone, computer, or tablet. Based on the softening performance value of the water softener, the dosage of water softener required to reduce water hardness by 1GPG can be calculated. For example, if the softening performance value of a water softener is k, then the dosage of water softener required to reduce water hardness by 1GPG is...

[0069] After obtaining the water softening dosage required to reduce water hardness by 1 GPG, the water softening dosage required to reduce the water hardness by the required difference is then calculated, thus obtaining the water softening dosage required per unit of influent volume. The specific calculation formula is as follows:

[0070]

[0071] Where w1 represents the amount of water softening agent required per unit volume of incoming water, k represents the softening performance value, and Δh represents the hardness difference.

[0072] After obtaining the required water softening agent dosage per unit influent volume, the total water softening agent dosage required under that influent volume is then calculated, thus obtaining the water softener dosage. The specific calculation formula is as follows:

[0073]

[0074] Among them, w 总 V represents the amount of water softener added, and V represents the amount of washing water entering the system.

[0075] For ease of explanation, the following example is given: Assuming the water softener has a softening performance value of 0.25 GPG, the water hardness difference is 1.5 GPG, and the influent flow rate of the washing water is 9 L, then the calculation is as follows: The amount of water softener to be added is 54g.

[0076] Therefore, based on multiple parameters such as the softening performance value of the water softener, the inflow rate of the washing water, the hardness of the washing water, and the hardness difference between the set water hardness and the softening performance value, the amount of water softener that needs to be added can be accurately calculated.

[0077] Step S104: Add water softener according to the dosage.

[0078] After obtaining the dosage of water softener, add it accordingly to ensure that the water hardness of the washing water decreases to the set water hardness, preventing clothes from becoming hard and yellow during washing or rinsing.

[0079] like Figure 2 As shown, if the above program execution instructions indicate the execution of a washing program, the specific execution steps are as shown in steps S201 to S207:

[0080] Step S201: Determine the amount of water to be used for washing based on the weight of the clothes to be washed;

[0081] Step S202: Obtain the water hardness of the washing water and calculate the hardness difference between the water hardness of the washing water and the set water hardness.

[0082] Step S203: Determine the dosage of water softener based on the influent flow rate, hardness difference, and softening performance of the water softener.

[0083] Step S204: Add water softener according to the dosage;

[0084] Step S205: Obtain the set concentration of the detergent, and determine the amount of detergent to be added based on the inflow of washing water and the set concentration of the detergent.

[0085] Step S206: Add detergent according to the required amount;

[0086] Step S207: Execute the washing program.

[0087] The process of calculating and adding water softener in steps S201 to S204 is the same as that in steps S101 to S104, so it will not be described again here.

[0088] In step S205, the set concentration of the detergent refers to the concentration at which the detergent achieves its optimal cleaning power. If the detergent concentration is too high, some detergent may remain on the clothes, failing to achieve a cleaning effect. Conversely, if the detergent concentration is too low, the content of the effective ingredients in the detergent will be insufficient, failing to fully exert its cleaning effect. Therefore, it is necessary to set the set concentration of the detergent in advance. This set concentration can be calculated through a limited number of experiments or it can be the concentration value set by the manufacturer during production. Furthermore, after obtaining the set concentration of the detergent, the amount of detergent added is obtained by multiplying the amount of washing water entering the system by the set concentration.

[0089] It should be noted that in step S205, the amount of detergent to be added can also be calculated based on the weight of the clothes to be washed. For example, the ratio of the weight of the clothes to be washed to the amount of detergent can be set in advance. After calculating the weight of the clothes to be washed and the ratio of the weight of the clothes to the amount of detergent, the amount of detergent to be added can be calculated. Furthermore, the ratio of the weight of the clothes to the amount of detergent can be adjusted according to the material and the degree of staining of the clothes to be washed. For example, pure cotton clothes require a higher detergent dosage than silk clothes, and clothes with more severe stains require a larger detergent dosage.

[0090] Therefore, before washing, it is necessary to calculate the amount of water softener, detergent, and washing water to be added. Water softener and detergent should be added to the washing water before washing.

[0091] like Figure 3 As shown, if the above program execution instructions indicate the execution of a rinsing procedure, the specific execution steps are as shown in steps S301 to S305:

[0092] Step S301: Determine the amount of rinsing water to be used based on the weight of the clothes to be washed;

[0093] Step S302: Obtain the water hardness of the rinsing water and calculate the hardness difference between the water hardness of the rinsing water and the set water hardness.

[0094] Step S303: Determine the dosage of water softener based on the influent flow rate, hardness difference, and softening performance value of the water softener;

[0095] Step S304: Add water softener according to the dosage;

[0096] Step S305: Perform the rinsing procedure.

[0097] It should be noted that the calculation process for the rinsing water intake is the same as that for the washing water intake, so it will not be repeated here.

[0098] Therefore, before rinsing, it is necessary to calculate the amount of water softener to be added and the amount of rinsing water to be added. After adding the water softener to the rinsing water, rinsing can then be carried out.

[0099] In this invention, if the program execution instruction indicates the execution of a washing program and a rinsing program, the specific execution steps are as shown in steps S401 to S412:

[0100] Step S401: Determine the amount of water to be used for washing based on the weight of the clothes to be washed;

[0101] Step S402: Obtain the water hardness of the washing water and calculate the hardness difference between the water hardness of the washing water and the set water hardness.

[0102] Step S403: Determine the dosage of water softener based on the influent flow rate, hardness difference, and softening performance of the water softener.

[0103] Step S404: Add water softener according to the dosage;

[0104] Step S405: Obtain the set concentration of the detergent, and determine the amount of detergent to be added based on the amount of water entering the washing room and the set concentration of the detergent.

[0105] Step S406: Add detergent according to the required amount;

[0106] Step S407: Execute the washing program;

[0107] Step S408: Drain and spin-dry after the washing program is finished;

[0108] Step S409: Return to steps S401 to S404. After completing step S404, execute the rinsing procedure.

[0109] Step S410: Has the preset number of rinsing cycles been reached? If yes, proceed to step SS411; otherwise, return to step S409.

[0110] Step S411: Drain and dehydrate after the rinsing process is complete;

[0111] Step S412: Output a prompt message.

[0112] The aforementioned prompts include, but are not limited to, ringtones, voice messages, and vibrations. The main control board 8 of the garment processing equipment sends these prompts to the user's terminal via wireless connections such as Bluetooth and Wi-Fi to indicate the program's completion. It should be noted that when executing a washing or rinsing program alone, a prompt can also be displayed to the user upon completion of the corresponding program.

[0113] Therefore, it is necessary to calculate the amount of water softener and the amount of washing water before washing and rinsing. Adding water softener to the washing water reduces the water hardness to the set level before washing or rinsing to prevent clothes from hardening and yellowing during the washing and rinsing process, thus protecting the clothes.

[0114] like Figure 4 and Figure 5 As shown, the present invention also provides a garment processing device using a control method. This garment processing device includes, but is not limited to, a washing tub 1, a main control board 8, and a data acquisition module. The washing tub 1 is used to hold clothes to be washed and includes an inner tub and an outer tub. The main control board 8 is used to control the rotation of the inner tub and also controls the data acquisition module to perform corresponding data acquisition tasks. It should be noted that the garment processing device also includes other existing components such as a housing, motor, and drain valve. The present invention does not further describe these other existing components of the garment processing device.

[0115] Specifically, the washing tub 1 is connected to a water inlet pipe 2, and a water inlet valve 3 is installed on the water inlet pipe 2. The water inlet valve 3 is connected to the main control board 8. The main control board 8 is used to control the opening or closing of the water inlet valve 3. When the water inlet valve 3 is open, washing water flows into the washing tub 1.

[0116] The aforementioned data acquisition modules include, but are not limited to, a weight sensor 4, a water hardness detection module 5, a near-infrared sensor 6, and a flow meter 7. The weight sensor 4 is located at the bottom of the washing tub 1 and is used to collect the weight of the clothes to be washed. The water hardness detection module 5 is located in the water inlet pipe 2 or in the washing tub 1 and is used to detect the hardness of the washing water. The near-infrared sensor 6 is located in the washing tub 1 and is used to detect the light waves reflected or transmitted from the clothes to be washed, converting the light waves into transmittable data and transmitting it to the main control board 8. The main control board 8 then identifies the material of the clothes to be washed based on this data. It should be noted that in practical applications, the installation positions of the weight sensor 4, water hardness detection module 5, and near-infrared sensor 6 can be adjusted according to actual needs, as long as the required data can be collected. This invention does not impose any limitations on these positions. In addition, at least three flow meters 7 are provided. The first flow meter 7 is installed on the inlet pipe 2 to collect the flow rate of the washing water. The second and third flow meters 7 are both installed in the dispensing device, which includes at least two chambers, one chamber for storing water softener and the other chamber for storing detergent. The second flow meter 7 is used to collect the flow rate of the water softener, and the third flow meter 7 is used to collect the flow rate of the detergent. Of course, other devices can also be used in the dispensing device to collect the flow rates of the water softener and detergent; this invention is not limited thereto.

[0117] The main control board 8 uses an MCU (Micro Controller Unit). It should be noted that the main control board 8 and the washing tub 1 are original components of the clothing processing equipment, while the multiple sensors or some of the sensors in the acquisition module described above can be components set up according to the needs of this invention.

[0118] The process by which the garment handling equipment performs the above control method is as follows:

[0119] After receiving the program execution command, the main control board 8 controls the weight sensor 4 to collect the weight of the clothes to be washed, and also controls the near-infrared sensor 6 to detect the light waves reflected or transmitted by the clothes to be washed, and obtains the material of the clothes to be washed based on the detection results of the near-infrared sensor 6.

[0120] Then, the main control board 8 calculates the amount of washing water to be inlet based on the weight and material of the clothes to be washed. After obtaining the amount of water to be inlet, it controls the water inlet valve 3 to open. The first flow meter 7 monitors the water inlet in real time. When the amount of washing water entering the washing tub 1 reaches the required amount of water to be inlet, it controls the water inlet to close.

[0121] Secondly, the main control board 8 also controls the water hardness detection module 5 to collect the water hardness of the washing water. When the water hardness of the washing water is greater than the set water hardness, the amount of water softener to be added is accurately calculated based on the water inflow, hardness difference and softening performance value of the water softener.

[0122] Finally, the control device dispenses water softener according to the specified dosage, reducing the hardness of the washing water to the set hardness.

[0123] Therefore, it can be seen that the main control board 8, as the core of the garment processing equipment, can control various devices to jointly execute the above control methods, ensuring that the hardness of the washing water is reduced to the set hardness, so that the hardness of the washing water meets the hardness requirements of the clothes to be washed, and preventing the clothes to be washed from hardening and yellowing during subsequent washing or rinsing.

[0124] To better execute the above method, this application also provides a water hardness adjustment device, which includes a memory and a processor.

[0125] The memory can be used to store instructions, programs, code, code sets, or instruction sets. The memory may include a program storage area and a data storage area. The program storage area may store instructions for implementing the operating system, instructions for at least one function, and instructions for implementing the aforementioned control methods; the data storage area may store data involved in the aforementioned control methods.

[0126] A processor may include one or more processing cores. The processor executes instructions, programs, code sets, or instruction sets stored in memory, and calls data stored in memory to perform various functions and process data as described in this application. The processor may be at least one of a specific application-specific integrated circuit, a digital signal processor, a digital signal processing device, a programmable logic device, a field-programmable gate array, a central processing unit, a controller, a microcontroller, and a microprocessor. It is understood that, for different devices, the electronic devices used to implement the above-described processor functions may also be other types, and the embodiments of this application do not specifically limit the specific implementation.

[0127] This application also provides a computer-readable storage medium, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code. This computer-readable storage medium stores a computer program that can be loaded by a processor and executed using the aforementioned control method.

[0128] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A control method for a garment processing device, characterized in that, include: The amount of water to be used for washing is determined based on the weight of the clothes to be washed; Obtain the water hardness of the washing water and calculate the hardness difference between the water hardness of the washing water and the set water hardness. The dosage of water softener is determined based on the influent volume, the hardness difference, and the softening performance of the water softener. Add water softener according to the stated dosage.

2. The control method for the garment processing equipment according to claim 1, characterized in that, The dosage is determined based on the influent volume, the hardness difference, and the softening performance value, including: The required water softening dosage per unit volume of influent is obtained based on the hardness difference and the softening performance value. The dosage is obtained by multiplying the influent volume and the water softening dosage required per unit influent volume.

3. The control method for the garment processing equipment according to claim 2, characterized in that, The formula for calculating the required amount of water softening agent per unit of influent volume is: Where w1 represents the amount of water softening agent required per unit volume of incoming water, k represents the softening performance value, and Δh represents the hardness difference.

4. The control method for the garment processing equipment according to any one of claims 1-3, characterized in that, After obtaining the water hardness of the washing water, the method further includes: Determine if the hardness of the washing water is greater than the set hardness; If so, calculate the difference between the hardness of the washing water and the set hardness, and determine the dosage of the water softener based on the influent volume, the hardness difference, and the softening performance of the water softener. If not, then the amount of water softener added is determined to be zero.

5. The control method for the garment processing equipment according to any one of claims 1-4, characterized in that, The process of determining the water intake based on the weight of the clothes to be washed includes: Identify the material of the clothes to be washed; Determine the ratio of the weight of the clothes to the amount of water to be washed based on the material of the clothes to be washed; The water intake is determined based on the weight of the clothes to be washed and the stated ratio.

6. The control method for the garment processing equipment according to claim 5, characterized in that, When the material of the garment to be washed is identified and it is found that the garment contains multiple materials, the water absorption rate of each of the multiple materials is determined; The water absorption rate of the garment to be washed is determined based on the water absorption rate of various materials; The ratio of the weight of the garment to the amount of washing water is determined based on the absorbency of the garment.

7. The control method for the garment processing equipment according to claim 6, characterized in that, The method of determining the water absorption rate of the garment to be washed based on the water absorption rates of various materials includes: Choose the material with the highest absorbency from the various materials as the absorbency of the garment to be washed.

8. The control method for the garment processing equipment according to any one of claims 1-7, characterized in that, The method further includes: Obtain the set concentration of the detergent; The amount of detergent to be added is determined based on the amount of water entering the washing room and the set concentration. Add detergent according to the stated dosage.

9. The control method for the garment processing equipment according to any one of claims 1-7, characterized in that, The method further includes: The amount of detergent to be added is determined based on the weight of the clothes to be washed; Add detergent according to the stated dosage.

10. A garment processing device, characterized in that, The garment processing equipment uses the control method described in any one of claims 1-9.