Heat pump clothes dryer and control method for heat pump clothes dryer

Abstract

The invention belongs to the technical field of clothes drying, and particularly relates to a heat pump clothes dryer and a control method for the heat pump clothes dryer. The invention aims to solvethe problems that a compressor is started and stopped frequently and the drying efficiency is affected in the prior art. The heat pump clothes dryer provided by the invention comprises a drum, a heatpump system, a fan, a ventilation component, a temperature detection device and a control device, wherein the heat pump system comprises an air channel, a condenser and an evaporator; the fan is usedfor driving air to flow in the air channel and the drum; and the control device is used for controlling the ventilation component to introduce cold air outside the air channel into part air channel for connecting the evaporator and a hot and humid air outlet of the drum when the temperature detection device detects that the working temperature of the heat pump system is greater than a preset temperature. Through the arrangement above, the cold air is introduced into the air channel to mix with the hot and humid air so as to reduce the temperature of the hot and humid air which performs heat exchange with a refrigerant in an evaporator pipeline, thereby reducing the exhaust temperature of the compressor, and avoiding low drying efficiency caused by frequently starting and stopping the compressor caused by high load.

Description

technical field [0001] The invention belongs to the technical field of clothes dryers, and in particular relates to a heat pump clothes dryer and a control method of the heat pump clothes dryer. Background technique [0002] A heat pump dryer is a common household appliance used to dry clothes. [0003] The heat pump clothes dryer includes a drum, a fan, an air duct and a heat pump system; the drum communicates with the air duct, and the heat pump system includes a compressor, a condenser and an evaporator, at least the fan, the condenser and the evaporator are arranged in the air duct. When the heat pump clothes dryer works, the refrigerant undergoes a gas-liquid two-phase change in the heat pump system to absorb or release heat. Among them, the refrigerant condenses and releases heat at the condenser; the fan drives the air in the air duct to pass through the condenser, and the air absorbs the heat. The heat rises and becomes hot and dry air, which is sent into the drum, ...

AI Technical Summary

Problems solved by technology

[0004] However, in the later stage of drying, the humidity of the clothes to be dried decreases, the heat required for the clothes to be dried decreases, and the temperature of the hot and humid air discharged from the drum will increase accordingly. The high-load working state causes the compressor to start and stop frequently, which affects the drying efficiency

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