Control method for segmented washing of washing machine and washing machine

Abstract

The present invention discloses a control method for segmented washing in a washing machine and a washing machine, belonging to the technical field of clothing processing equipment. The control method includes determining the clothing volume interval Gn in which the clothing volume is located based on the amount of clothing in the washing machine drum; filling water to the corresponding water inlet level Wn based on the clothing volume interval Gn; then the motor performs a timing action Rn1, which lasts for Tn1 time; heating the water temperature for the first time based on the temperature value set by the user, and the motor performs a timing action Rn2, soaking for Tn2 time; then determining the second heating water temperature value based on the temperature value set by the user, and the motor performs a timing action Rn3, which lasts for Tn3 time, and washing. The method provided by the present invention can adopt different motor speeds and start-stop ratios in different washing stages according to the different amounts of clothing, and achieve a washing effect on different stains on clothing by switching between low and high speeds and coordinating the motor start-stop ratio.

Description

Technical Field

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

[0002] As a household appliance, washing machines are an integral part of people's lives. Their structures and functional designs are becoming increasingly user-friendly, and the demands for cleaning clothes are becoming increasingly stringent. Fully automatic washing machines typically follow a pre-programmed sequence of washing, rinsing, and spinning to complete the entire laundry process.

[0003] Most existing washing machines use a single water intake and washing rhythm during the washing process. Under different loads of clothes, the washing effects vary greatly. The washing rhythm does not match the load of clothes, resulting in poor flipping or tumbling effects of the clothes, affecting the washing performance. Summary of the Invention

[0004] The present invention aims to provide a method for controlling the segmented washing of a washing machine and a washing machine, aiming to at least resolve the technical problem in the prior art of mismatching the washing rhythm with the amount of laundry, resulting in poor tumbling or rolling of the laundry, and thus affecting washing performance. To achieve the above-mentioned objectives, the present invention adopts the following technical solutions:

[0005] A method for controlling segmented washing in a washing machine, the method comprising:

[0006] S1, according to the amount of clothes in the washing machine drum, determine the clothes amount interval Gn;

[0007] S2, filling the washing machine tub with water to the corresponding water level Wn according to the laundry load interval Gn;

[0008] S3: After the water level Wn is reached, the motor performs the corresponding Rn1 sequence action according to the laundry load interval Gn, which lasts for Tn1 time.

[0009] S4, after step S3 is completed, the first heating water temperature value is determined according to the temperature value set by the user. During the heating process, the motor operates at the Rn2 timing until the water temperature reaches the first heating water temperature value, the motor stops operating, and then soaks for Tn2 time;

[0010] S5, after soaking for Tn2 time, the second heating water temperature value is determined according to the temperature value set by the user. During the heating process, the motor operates at the Rn3 timing and lasts for Tn3 time to perform washing;

[0011] S6: After the washing process is completed, the rinsing and dehydration processes are entered in sequence.

[0012] As a further solution of the present invention: the clothing amount interval Gn is several gears determined in advance by the empirical values ​​of the baseline test experiment, and each clothing amount interval Gn is preset with a corresponding water inlet level Wn, timing action Rn1, time Tn1, timing action Rn2, time Tn2, timing action Rn3 and time Tn3, where n=1 or 2 or 3...

[0013] As a further solution of the present invention: in step S4, if the temperature value set by the user is less than Temp1, the first heating water temperature value described in step S4 is the temperature value set by the user; if the temperature value set by the user is greater than Temp1, the first heating water temperature value described in step S4 is Temp1, where Temp1 is the temperature that effectively activates the activity of the detergent enzyme.

[0014] As a further solution of the present invention: in step S5, if the temperature value set by the user is less than Temp2, the second heating water temperature value described in step S5 is the temperature value set by the user; if the temperature value set by the user is greater than Temp2, the second heating water temperature value is first raised to Temp2 in step S5 and then heating is stopped. After washing for Tn3 time, the second heating water temperature value is raised to the temperature value set by the user, where Temp2 is the temperature at which the detergent enzyme activity is effectively exerted.

[0015] As a further solution of the present invention: the sequential action Rn1, the sequential action Rn2 and the sequential action Rn3 all include the motor speed, the motor on time and the electrode off time.

[0016] As a further solution of the present invention: the timing action Rn3 is a set of multiple timings of different motor speeds, motor on and electrode off.

[0017] As a further solution of the present invention: step S3 also includes:

[0018] S31, after the motor operates according to the Rn1 timing for Tn1 time, the motor stops and determines whether water needs to be added. If the water level in the washing machine drum is lower than the preset water inlet level Wn, water is continued to be added to the water inlet level Wn. If the water level in the washing machine drum is not lower than the preset water inlet level Wn, water does not need to be added.

[0019] The present invention also relates to a washing machine, which uses the above-mentioned control method for segmented washing of a washing machine.

[0020] The present invention has the following beneficial effects:

[0021] The present invention determines the clothing amount interval of the clothes in the drum of the washing machine and determines the water inlet level according to the clothing amount interval. The water amount at the water inlet level can fully soak the clothes and can be heated to the required temperature in a short time. The motor speed and the start-stop ratio in the soaking program, the heating and soaking program, the segmented washing program and the rinsing and dehydration program are also determined according to the clothing amount interval. In particular, the segmented washing program includes a step-by-step change and circulation process from low speed to high speed. The low speed drives the clothes to form a tumbling effect, and the high speed drives the clothes and water to form an upward and downward effect, thereby having a flushing effect on the clothes. At the same time, high-speed washing can promote the washing of stubborn stains, thereby achieving the washing effect of different stains on clothes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a flow chart of a control method for segmented washing in a washing machine according to the present invention;

[0024] Figure 2 This is a flow chart of adjusting the water temperature value for the first heating in step S4 of the present invention;

[0025] Figure 3 This is a flow chart of adjusting the water temperature value for the second heating in step S5 of the present invention. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] See also Figure 1 As shown, an embodiment of the present invention provides a method for controlling segmented washing in a washing machine, comprising the following steps:

[0028] Determine the clothing amount interval Gn

[0029] Place the laundry in the washing machine's drum and set the temperature. After the washing machine starts, the computer board inside the washing machine first performs a load detection to determine the amount of laundry in the drum. The load is then divided into different gears according to the preset laundry load range. Each gear is denoted as Gn (n = 1 or 2 or 3...). The number of gears can be determined based on the empirical value of the baseline test experiment.

[0030] Fill water to the inlet water level Wn

[0031] According to the laundry amount interval Gn in the inner drum, the water inlet system of the washing machine fills water into the inner drum to the corresponding water inlet level Wn (n=1 or 2 or 3...). This water level is the water inlet level distinguished by the amount of laundry. Each laundry amount interval Gn corresponds to an inlet water level Wn. The general trend is that the more laundry there is, the higher the water inlet level.

[0032] soaked

[0033] When the water level Wn is reached, water injection stops and the motor control system controls the motor to rotate left and right at a sequence Rn1 (n=1, 2, 3, ...) for a duration of Tn1. The Rn1 sequence includes the motor speed and the motor on and off times. For example, at a 50 rpm motor speed, the motor will rotate for 5 seconds on and 5 seconds off. The Rn1 sequence and Tn1 duration are also determined by the laundry load interval Gn. Different laundry load intervals correspond to different Rn1 sequences and Tn1 durations. The goal is to ensure that the laundry is fully soaked and that the detergent comes into contact with the laundry.

[0034] It is worth noting that after the motor rotates left and right for Tn1 minute in sequence Rn1, the motor stands still for a few seconds, and the water level detection system determines whether water needs to be added. If the water level in the washing machine barrel is lower than the preset water inlet level Wn, water will continue to be added to the water inlet level Wn. If the water level in the washing machine barrel is not lower than the preset water inlet level Wn, no water needs to be added, and the next step is entered.

[0035] Heating soak

[0036] After the clothes are soaked, the water heating system begins operating, determining the initial water temperature based on the user-set temperature. During the heating process, the motor rotates left and right at a timing sequence Rn2 (n=1, 2, 3, ...), for example, at 40 rpm, with a 5-second on-10-second off cycle, until the water reaches the initial heating temperature. The motor then stops and soaks for the Tn2 time. The Rn2 timing sequence and Tn2 time are also differentiated based on the laundry load interval Gn. Different laundry load intervals correspond to different Rn2 timing sequences and Tn2 times. This stage primarily activates the enzyme activity in the detergent and ensures sufficient contact between the detergent and the clothes.

[0037] Specifically, Temp1 is defined as the temperature that effectively activates the activity of the detergent enzyme. If the temperature value set by the user is less than Temp1, the first heating water temperature value in this step is the temperature value set by the user, that is, the water temperature stops when it reaches the temperature value set by the user. If the temperature value set by the user is greater than Temp1, the first heating water temperature value in this step is Temp1, that is, the water temperature needs to be heated to Temp1 before stopping.

[0038] Segmented washing

[0039] After soaking for Tn2, the water temperature is set for the second heating step based on the user-set temperature. During this process, the motor operates in sequence Rn3 (n=1, 2, 3, ...) to wash the clothes for Tn3. The Rn3 sequence and Tn3 time are also determined by the laundry load range Gn. Different laundry load ranges Gn correspond to different Rn3 sequences and Tn3 times.

[0040] It's important to note that the Rn3 sequence isn't a single motor speed and stop sequence; it's a set of speeds and motor on / off sequences, essentially a cycle of varying speeds from low to high. For example, the Rn3 sequence includes a 40 rpm motor speed, 5 seconds on, 5 seconds off; an 80 rpm motor speed, 5 seconds on, 5 seconds off; and a 120 rpm motor speed, 10 seconds on, 5 seconds off. The low speeds primarily create a tumbling effect on the clothes, while the high speeds create a rising and falling effect between the clothes and the water, resulting in a flushing effect. The high speed also helps remove stubborn stains.

[0041] Specifically, Temp2 is defined as the temperature at which the detergent enzyme activity is effectively exerted and maintained. If the user-set temperature is lower than Temp2, the second heating water temperature in this step will be the user-set temperature. If the user-set temperature is higher than Temp2, the second heating water temperature will be raised to Temp2 before heating is stopped. After washing for Tn3 time, the second heating water temperature will be raised to the user-set temperature.

[0042] Rinse and spin

[0043] After the wash cycle is complete, the rinse cycle begins. Similar to the wash cycle, the motor operates in sequence Rn4 (n=1, 2, 3, ...) for Tn4. Because the rinse water level Qn differs from the water level Wn, the motor sequence for the rinse cycle is also different. Sequence Rn4 is a set of different speeds and motor on / off times. Sequence Rn4, Tn4, and the rinse water level Qn are also differentiated by the laundry load range Gn. Different laundry load ranges Gn correspond to different Rn4 sequences, Tn4 times, and rinse water levels Qn.

[0044] After rinsing, the spin cycle begins, and the spin time is also divided according to the clothing quantity range Gn.

[0045] A washing machine using the above-described staged washing control method can control the water intake to meet varying loads of laundry, ensuring that the water is sufficient to wet the laundry while also heating it to the desired temperature in a short period of time. Furthermore, the washing machine can utilize different motor speeds and start-stop ratios in different washing stages, depending on the load. By switching between low and high speeds and adjusting the motor start-stop ratio, the washing effect can be improved for different types of laundry stains.

[0046] The above detailed description of the preferred embodiments of the present invention should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent of the present invention.

Claims

1. A method for controlling the segmented washing of a washing machine, characterized in that: The control method includes: S1, according to the amount of clothes in the washing machine drum, determine the clothes amount interval Gn; S2, filling the washing machine tub with water to the corresponding water level Wn according to the laundry load interval Gn; S3: After the water level Wn is reached, the motor performs the corresponding Rn1 sequence action according to the laundry load interval Gn, which lasts for Tn1 time. S4, after step S3 is completed, the first heating water temperature value is determined according to the temperature value set by the user. During the heating process, the motor operates at the Rn2 timing until the water temperature reaches the first heating water temperature value, the motor stops operating, and then soaks for Tn2 time; S5, after soaking for Tn2 time, the second heating water temperature value is determined according to the temperature value set by the user. During the heating process, the motor operates at the Rn3 timing and lasts for Tn3 time to perform washing; S6, after the washing process is completed, the rinsing and dehydration processes are entered in sequence; In step S4, if the temperature value set by the user is less than Temp1, the first heating water temperature value in step S4 is the temperature value set by the user; if the temperature value set by the user is greater than Temp1, the first heating water temperature value in step S4 is Temp1, where Temp1 is the temperature that effectively activates the activity of the detergent enzyme; In step S5, if the temperature value set by the user is less than Temp2, the second heating water temperature value described in step S5 is the temperature value set by the user. If the temperature value set by the user is greater than Temp2, the second heating water temperature value is first raised to Temp2 in step S5 and then heating is stopped. After washing for Tn3 time, the second heating water temperature value is raised to the temperature value set by the user, where Temp2 is the temperature at which the detergent enzyme activity is effectively exerted.

2. A method for controlling segmented washing in a washing machine according to claim 1, characterized in that: The clothing quantity interval Gn is several gears determined in advance by the empirical value of the baseline test experiment, and each clothing quantity interval Gn is preset with a corresponding water inlet level Wn, timing action Rn1, time Tn1, timing action Rn2, time Tn2, timing action Rn3 and time Tn3, where n is the number of gears.

3. A method for controlling segmented washing in a washing machine according to claim 1, characterized in that: The sequential actions Rn1, Rn2 and Rn3 all include motor speed, motor on and motor off times.

4. A method for controlling segmented washing in a washing machine according to claim 3, characterized in that: The timing action Rn3 is a set of multiple timing sequences of different motor speeds, motor on and motor off.

5. A method for controlling segmented washing in a washing machine according to claim 1, characterized in that: Step S3 further includes: S31, after the motor operates according to the Rn1 timing for Tn1 time, the motor stops and determines whether water needs to be added. If the water level in the washing machine drum is lower than the preset water inlet level Wn, water is continued to be added to the water inlet level Wn. If the water level in the washing machine drum is not lower than the preset water inlet level Wn, water does not need to be added.

6. A washing machine, characterized in that: The washing machine uses the control method for segmented washing of a washing machine as described in any one of claims 1 to 5.

Images