CN-115852631-B - Control method of washing machine and washing machine

CN115852631BCN 115852631 BCN115852631 BCN 115852631BCN-115852631-B

Abstract

The application provides a control method of a washing machine and the washing machine, wherein the control method comprises the steps of detecting the water level frequency of a water level sensor corresponding to the current water level height in a barrel assembly of the washing machine before water is fed into the barrel assembly for washing; the method includes the steps of obtaining a first set frequency, wherein the first set frequency is a critical frequency of a water level sensor, which does not affect the judgment of the error of the water level sensor, of the water level height in the barrel assembly, and adjusting the initial water inflow of a washing program according to the water level frequency and the first set frequency. Different initial water inflow adjustment modes are adopted when the water in the washing machine is more and the water is less, but the same adjustment mode is not adopted for the initial water inflow of the washing machine no matter what circumstances are, the control accuracy of the water inflow of the washing machine can be improved, and the washing effect of clothes is further improved.

Inventors

PAN GUANGHUI
LI HONGPENG
ANG FEI

Assignees

TCL家用电器（合肥）有限公司

Dates

Publication Date: 20260512
Application Date: 20221124

Claims (7)

1. A control method of a washing machine including a water level sensor, the control method comprising: before water is fed into a barrel assembly of the washing machine for washing, detecting the water level frequency of a water level sensor corresponding to the current water level height in the barrel assembly; Acquiring a first set frequency, wherein the first set frequency is a critical frequency of the water level sensor, which does not influence the error judgment of the water level sensor, for the water level height in the barrel assembly; The method comprises the steps of judging whether a water level is higher or not through comparison of the water level frequency and the first set frequency, judging whether an error exists in a water level sensor after water is drained if the water level is higher, adjusting the initial water inflow when the error exists in the water level sensor, judging that the initial water inflow is directly caused by the error of the water level sensor if the water level is lower, adjusting the initial water inflow of a washing program according to the water level frequency and the first set frequency, and adjusting the initial water inflow of the washing program according to a first calibration formula when the water level frequency is larger than or equal to the first set frequency, wherein the initial water inflow of the washing program is adjusted according to a second calibration formula when the water level frequency is smaller than the first set frequency, and the second calibration formula is different from the first calibration formula.
2. The control method according to claim 1, wherein the adjusting the initial water inflow of the washing program according to a first calibration formula when the water level frequency is greater than or equal to the first set frequency comprises: acquiring a weighing value of clothes in the washing machine, a blank barrel frequency corresponding to the water level sensor when the washing machine is in a blank barrel state, and a standard frequency corresponding to the water level sensor when the washing machine is in normal operation, wherein the blank barrel frequency is larger than the standard frequency; Acquiring a set water inflow corresponding to the weighing value; And adjusting the set water inflow according to the set water inflow, the empty bucket frequency and the standard frequency by using the first calibration formula so as to obtain the actual water inflow.
3. The control method according to claim 1, wherein the adjusting the initial water inflow of the washing program according to a second calibration formula when the water level frequency is smaller than the first set frequency, the second calibration formula being different from the first calibration formula, comprises: starting a drainage pump to drain water, and obtaining drainage frequency after drainage; Acquiring a weighing value of clothes in the washing machine and corresponding standard frequency of the water level sensor when the washing machine is in normal operation; Acquiring a set water inflow corresponding to the weighing value; and adjusting the set water inflow according to the set water inflow and the standard frequency by using the second calibration formula so as to obtain the actual water inflow.
4. A control method according to claim 3, wherein the starting the drain pump to drain water, obtaining a drain frequency after draining, comprises: opening a drainage pump, and detecting water level frequencies after a plurality of drainage in a second preset duration after the drainage is performed for a first preset duration; and averaging the water level frequencies after a plurality of water drains to obtain the water drain frequency.
5. A control method according to claim 2 or 3, wherein the obtaining the set water inflow corresponding to the weighing value includes: acquiring clothing materials in the washing machine; and selecting corresponding set water inflow from a mapping table according to the clothes materials and the weighing values, wherein the mapping table comprises a plurality of set clothes materials, each set clothes material corresponds to a plurality of preset weighing ranges, and each preset weighing range corresponds to one set water inflow.
6. A control method according to claim 2 or 3, wherein prior to obtaining the weighing value of the laundry in the washing machine, the control method further comprises: Acquiring clothes materials in the washing machine and a mapping table, wherein the mapping table comprises a plurality of set clothes materials, each set clothes material corresponds to a plurality of preset weighing ranges, and each preset weighing range corresponds to a set water inflow; the obtaining the set water inflow corresponding to the weighing value comprises the following steps: and determining a preset weighing range within which the weighing value falls, and acquiring corresponding set water inflow.
7. A washing machine, comprising: a tub assembly provided with a drain port; The water level sensor is arranged at the water outlet; The controller is electrically connected with the water level sensor and is used for detecting the water level frequency of the water level sensor corresponding to the current water level height in the barrel assembly before water is fed into the barrel assembly, acquiring a first set frequency which is the critical frequency of the water level sensor, wherein the water level height in the barrel assembly does not affect the judgment of the error of the water level sensor, adjusting the initial water inflow of a washing program according to the water level frequency and the first set frequency, judging whether the water level is higher or not through comparison of the water level frequency and the first set frequency, judging whether the water level sensor has an error after water is discharged if the water level is higher, adjusting the initial water inflow when the water level sensor has the error, judging that the initial water inflow is caused by the error of the water level sensor if the water level is lower, directly adjusting the initial water inflow according to the first set frequency and the first set frequency, and further comprises the step of adjusting the initial water inflow of the washing program according to the water level frequency and the first set frequency, and the first calibration formula when the water level frequency is greater than or equal to the first set frequency and the first calibration formula, and the first calibration formula is not adjusted according to the first calibration formula.

Description

Control method of washing machine and washing machine Technical Field The application belongs to the technical field of washing machines, and particularly relates to a control method of a washing machine and the washing machine. Background With the popularization of the green and environment-friendly concepts and the demands for energy and clothes washing of the washing machine, users put higher demands on water consumption of the washing machine. When water inflow is more, water resource waste is easily caused, the output power of the motor is increased due to more water, the power consumption is increased, and the washing effect is poor. When the water inflow is small, the washing uniformity is poor, and the local part cannot be cleaned. Therefore, control of the accuracy of water intake of the washing machine is particularly important. However, the existing washing machine is not accurate in water inflow control, resulting in poor washing effect of laundry. Disclosure of Invention The embodiment of the application provides a control method of a washing machine and the washing machine, which are used for improving the accuracy of controlling the water inflow of the washing machine and further improving the washing effect of clothes. The embodiment of the application provides a control method of a washing machine, which comprises the following steps: before water is fed into a barrel assembly of the washing machine for washing, detecting the water level frequency of a water level sensor corresponding to the current water level height in the barrel assembly; acquiring a first set frequency, wherein the first set frequency is a critical frequency of a water level sensor, which does not influence the judgment of the error of the water level sensor, for the water level height in the barrel assembly; and adjusting the initial water inflow of the washing program according to the water level frequency and the first set frequency. Optionally, the adjusting the initial water inflow of the washing program according to the water level frequency and the first set frequency includes: when the water level frequency is greater than or equal to the first set frequency, adjusting the initial water inflow of the washing program according to a first calibration formula; when the water level frequency is smaller than the first set frequency, the initial water inflow of the washing program is adjusted according to a second calibration formula, and the second calibration formula is different from the first calibration formula. Optionally, when the water level frequency is greater than or equal to the first set frequency, adjusting the initial water inflow of the washing program according to a first calibration formula, including: acquiring a weighing value of clothes in the washing machine, a blank barrel frequency corresponding to the water level sensor when the washing machine is in a blank barrel state, and a standard frequency corresponding to the water level sensor when the washing machine is in normal operation, wherein the blank barrel frequency is larger than the standard frequency; Acquiring a set water inflow corresponding to the weighing value; And adjusting the set water inflow according to the set water inflow, the empty bucket frequency and the standard frequency by using the first calibration formula so as to obtain the actual water inflow. Optionally, the first calibration formula is that WL1=WL0+ (|FW3-FW0|/|F1-F2|) *(FW3-FW0); Wherein WL1 is the actual water inflow, WL0 is the set water inflow, FW3 is the empty bucket frequency, FW0 is the standard frequency, F1 is the upper error limit frequency, and F2 is the lower error limit frequency. Optionally, when the water level frequency is smaller than the first set frequency, the initial water inflow of the washing program is adjusted according to a second calibration formula, where the second calibration formula is different from the first calibration formula, and includes: starting a drainage pump to drain water, and obtaining drainage frequency after drainage; Acquiring a weighing value of clothes in the washing machine and corresponding standard frequency of the water level sensor when the washing machine is in normal operation; Acquiring a set water inflow corresponding to the weighing value; and adjusting the set water inflow according to the set water inflow and the standard frequency by using the second calibration formula so as to obtain the actual water inflow. Optionally, the second calibration formula is that WL1=WL0+ (|FW2-FW0|/|F1-F2|) *(FW2-FW0); Wherein WL1 is the actual water inflow, WL0 is the set water inflow, FW2 is the drain frequency, FW0 is the standard frequency, F1 is the upper error limit frequency, and F2 is the lower error limit frequency. Optionally, the starting the drainage pump to drain water, obtains the drainage frequency after the drainage, includes: opening a drainage pump, and detecting water level frequencies after a plurality