Clothes dryer and control method thereof

Abstract

The invention discloses a clothes dryer and a control method thereof. The clothes dryer comprises a roller, a condenser, an evaporator, an air pressure sensor, a water receiving container, a water storage container, a cleaning device and a controller, wherein the roller is provided with an air inlet and an air return port, the outlet end of the condenser is communicated with the air inlet, the outlet end of the evaporator is connected with the inlet end of the condenser, the inlet end of the condenser is communicated with the air return port through an air return channel. The air pressure sensor is arranged in the air return channel. The cleaning device is provided with a water inlet and a water outlet, the water inlet is connected with an outlet of the water storage container, and the water outlet is suitable for water spraying towards the evaporator. The controller is connected with the air pressure sensor and the cleaning device so as to control the water outlet to spray water to the evaporator in advance so as to clean the evaporator when the air pressure sensor detects that a real-time air-pressure value P is greater than a predetermined pressure value P. The clothes dryer can clean hair on a heat exchanger in time, and the heat exchange performance and the drying efficiency are improved.

Description

Technical field [0001] The present invention relates to the technical field of clothes dryers, and more specifically, to a clothes dryer and a control method thereof. Background technique [0002] During the drying process of the dryer, the drum underwear will produce a large amount of lint due to rolling friction. These lint will flow forward with the air flow. When passing through the heat exchanger, the fine lint will adhere to the narrow cross-section, On a heat exchanger with a rough surface. For this reason, some dryers are equipped with a dander cleaning system to flush the dander on the heat exchanger. [0003] However, when a large amount of lint accumulates on the heat exchanger, the lint on the upper end of the heat exchanger will gradually move to the lower end when washed by the water flow, forming a large wet sticky lint that adheres to the grid-shaped heat exchanger. The water jet from the nozzle body rushes through the upper end of the heat exchanger and the stren...

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Problems solved by technology

[0003] However, when a large amount of lint is accumulated on the heat exchanger, the lint at the upper end of the heat exchanger will gradually move to the lower end after being washed by the water flow, forming a large wet and sticky lint block that adheres to the grid-shaped heat exchanger, and from The strength of the water sprayed from the nozzle body is weakened after passing through the upper end of the heat exchanger, which makes it difficult to wash off these fluff blocks. Over time, they will gradually expand upwards, resulting in the blockage of the entire heat exchanger end face, so that the drying performance becomes worse. It is getting worse and worse, and it is prone to safety hazards such as fire

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