Washing and drying all-in-one machine with heat pump and drying mode

Abstract

The invention discloses a washing and drying all-in-one machine with a heat pump and a drying mode; the washing and drying all-in-one machine comprises a rotary drum, a heat pump module and a clothes drying air channel which is used for communicating the heat pump module and the rotary drum; and the washing and drying all-in-one machine also comprises an auxiliary low-temperature air channel and an air channel switching mechanism, wherein the auxiliary low-temperature air channel can feed hot air generated by the heat pump module into an evaporator under a working environment to be heated, and the air channel switching mechanism is used for controlling the hot air generated by the hot pump module to be fed into the clothes drying air channel and / or the auxiliary low-temperature air channel. When the washing and drying all-in-one machine begins to dry clothes, if a detected temperature is lower than a set temperature, the washing and drying all-in-one machine heats the clothes by using the per se heat pump, the hot air is fed into the heat pump module through the auxiliary low-temperature air channel so as to increase the temperature of the working environment of the evaporator, and the set temperature is a temperature ensuring a refrigerating fluid in the evaporator to completely evaporate and no frost to occur; and in the drying process, the air channel switching mechanism is controlled to adjust the air volume of the hot air feeding into the auxiliary low-temperature air channel and the clothes drying air channel according to the condition of the detected temperature. The washing and drying all-in-one machine has the advantages of solving the low clothes drying efficiency under the low temperature environment, saving the clothes drying time and improving the clothes drying efficiency.

Description

technical field [0001] The invention relates to a clothes drying device and a clothes drying method, in particular to a heat pump washing and drying integrated machine and a drying method that can better dry clothes in a low temperature environment. Background technique [0002] The following air circulation channel is arranged in the existing heat pump type clothes drying device: the heated air heated by the condenser in the heat pump cycle system is sent into the drying room containing the clothes, and the moist air which has taken moisture from the clothes is It is sent back to the evaporator for dehumidification, and the dehumidified air is heated by the condenser again and sent to the drying chamber. [0003] Chinese Patent Application No. 200610153406.9 discloses a clothes drying device capable of stabilizing the operation of a heat pump generating drying air circulating between the drying chamber and the heat pump. Among them, the air heated by the heater in the heat...

AI Technical Summary

Problems solved by technology

Since the heat of the drying air comes from the power input of the compressor system, the temperature rise in the laundry and drying clothes is also extremely slow, which is not conducive to the efficiency of drying clothes; in addition, the evaporator works in a low temperature environment below 0°C for a long time, In contact with the humid air blown out of the drum, a large amount of frost will condense on the surface of the fins of the evaporator, the effective area of ​​the evaporator will be reduced, and the circulation of the wind in the circulating air path will be blocked, so that the refrigerant in the compressor system cannot be completely vaporized in the evaporator , the refrigerant in the liquid state enters the compressor along the compressor suction pipe, causing compressor failure

Images