Washing and drying machine and drying control method thereof

Abstract

The invention belongs to the field of washing and drying machines, and particularly relates to a washing and drying machine and a drying control method thereof. The drying control method comprises the following steps that P1, the weight M0 of a load is obtained before washing begins, and the corresponding estimated drying time t0 under the weight is obtained; P2, after dehydration is completed, the load is dried for the first time, and the first-time drying duration is the estimated drying time t0; P3, the weight Mn of the load is obtained, wherein n is the number of drying times and is larger than or equal to 1; P4, the moisture content Hn of the current load is calculated according to the load weight M0 obtained before washing and the load weight Mn, wherein Hn is equal to (Mn-M0) / M0; and P5, whether the load is dried or not is judged by comparing the water content Hn of the current load with the set water content H0. According to the drying control method, the drying duration and the moisture content of the dried clothes are determined on the basis of weighing, drying judgment is conducted through the drying duration and the moisture content of the dried clothes, and accurate drying judgment is achieved.

Description

technical field [0001] The invention belongs to the field of washing and drying machines, and in particular relates to a drying control method of a washing and drying machine and the washing and drying machine. Background technique [0002] Most washing and drying machines in the market use temperature-sensing bags to sense the temperature inside the drum washer-drying machine to judge whether the clothes have been dried. The drying effect is not good enough for the laundry. [0003] Patent No. CN106854827A discloses a method of using an infrared sensor to determine the temperature value of a certain plane matrix point of the drum, and then compares it with the temperature outside the drum to determine the dryness. This method only uses temperature detection to judge dryness, and cannot directly reflect whether the clothes have been dried, and the dryness judgment effect is relatively poor. [0004] Patent No. CN111549490A discloses a method for judging the dryness of a dr...

AI Technical Summary

Problems solved by technology

This method only uses temperature detection to judge dryness, and cannot directly reflect whether the clothes have been dried, and the dryness judgment effect is poor

[0004] Patent No. CN111549490A discloses a method of judging drying by using two drying and washing machines. It utilizes the weighing of the whole machine and the temperature measurement of the temperature sensing package of the evaporator to jointly judge the drying. The judging effect is better but the application range is relatively large narrow

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