Clothes washing and drying machine and and clothes drying method thereof

Abstract

The invention relates to a clothes washing and drying machine and and clothes drying method thereof, in particular to a clothes washing and drying machine. The wash-dryer comprises a washing cylinder, a drying air duct for blowing drying air flow into the washing cylinder in the clothes drying process, and a heat exchanging device. The heat exchanging device comprises a heat absorbing part and a heat release part. The heat absorbing part is arranged in a section, adjacent to the air return hole, of the drying air duct to absorb the heat of the air in the washing cylinder. The heat release part is arranged at the outer portion of the drying air duct to dissipate the heat coming from the heat absorbing part. The invention further provides a clothes drying method of the wash-dryer. The method comprises the steps of supplying heated air into the washing cylinder to use the heated air to dry clothes in the washing cylinder, when the temperature of the heated air exceeds a first preset temperature, stopping a heating device to pause the heating of the air flowing through the washing cylinder, and when the temperature of the heated air is below a second preset temperature, starting the heating device to continue to heat the air flowing through the washing cylinder.

Description

technical field [0001] The invention relates to household appliances, in particular to a washing and drying machine and a clothes drying method thereof. Background technique [0002] A washing and drying machine (also called a washing and drying machine) generally includes a washing tub for accommodating clothes to be washed and / or dried and a drying air duct located outside the washing tub and communicated with the washing tub to pass through the drying air duct. Blow dry air into the washing tub. When the drying air flows through the washing drum, the moisture remaining on the clothes in the washing drum is heated into water vapor, and the water vapor flows out of the washing drum with the air into the drying air duct, and is condensed in the upstream section of the drying air duct. After condensing, the relatively dry air continues to flow along the drying duct and enters the washing drum again for continuous circulation. [0003] In the prior art, two methods of water ...

AI Technical Summary

Problems solved by technology

For the way of water condensation, cold water needs to be continuously fed into the drying air duct during the drying process. The condensation efficiency of this condensation method is low and the water consumption is large

For the way of air condensation, it is necessary to use the room temperature air outside the machine to exchange heat with the hot and humid air in the drying air duct during the drying process. Since this method needs to exchange heat through the pipe wall, the condensation efficiency is quite low, resulting in a longer drying time. , higher energy consumption

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