Heat pump system, washing-drying integrated machine and clothes dryer

Abstract

Provided are a heat pump system, a washing-drying integrated machine and a clothes dryer. The heat pump system includes an evaporator, a compressor, a condenser and a refrigerant regulating subsystem; where the evaporator, the compressor, the condenser and the refrigerant regulating subsystem are sequentially communicated through a pipeline to form a refrigerant circulating loop; and the refrigerant regulating subsystem includes a first branch and a second branch connected in parallel between the evaporator and the condenser; the first branch includes a first throttling device having an outlet connected with a pipe inlet of the evaporator, and a liquid storing device located between the first throttling device and the condenser; and a second throttling device is connected with the second branch in series.

What is claimed is: 
     
         1 . A heat pump system, comprising an evaporator, a compressor, a condenser and a refrigerant regulating subsystem, wherein the evaporator, the compressor, the condenser and the refrigerant regulating subsystem are sequentially communicated through a pipeline to form a refrigerant circulating loop; and the refrigerant regulating subsystem comprises a first branch and a second branch connected in parallel between the evaporator and the condenser;
 the first branch comprises a first throttling device having an outlet connected with a pipe inlet of the evaporator, and a liquid storing device located between the first throttling device and the condenser; and   a second throttling device is connected with the second branch in series.   
     
     
         2 . The heat pump system according to  claim 1 , wherein the second branch and the first branch are connected with a pipe outlet of the condenser through a reversing valve. 
     
     
         3 . The heat pump system according to  claim 1 , wherein electromagnetic valves are respectively arranged on the first branch between the condenser and the liquid storing device and the second branch between the second throttling device and the condenser. 
     
     
         4 . The heat pump system according to  claim 1 , wherein the first throttling device is a first capillary tube; the second throttling device is a second capillary tube; and the length of the first capillary tube is smaller than that of the second capillary tube. 
     
     
         5 . The heat pump system according to  claim 1 , wherein the first throttling device and the second throttling device are a same electronic expansion valve; and an opening degree of the electronic expansion valve is adjustable. 
     
     
         6 . The heat pump system according to  claim 1 , wherein both the first throttling device and the second throttling device are electronic expansion valves; and opening degrees of all the electronic expansion valves are adjustable. 
     
     
         7 . The heat pump system according to  claim 3 , wherein check valves are respectively arranged on the first branch between the liquid storing device and the first throttling device and the second branch between the second throttling device and the electromagnetic valve. 
     
     
         8 . A washing-drying integrated machine, comprising an outer drum, an air duct and an inner drum arranged in the outer drum, wherein an air inlet and an air outlet of the air duct are respectively connected with a rear part and a front part of the outer drum; the air duct and the outer drum form a closed loop; a fan is arranged in the air duct, wherein the washing-drying integrated machine further comprises the heat pump system according to  claim 1 ; the evaporator of the heat pump system is arranged at the air inlet of the air duct, for condensing air flowing through the air duct; and the condenser of the heat pump system is located in the air duct between the fan and the evaporator, for heating air flowing through the air duct. 
     
     
         9 . A clothes dryer, comprising a tank body, an air duct and a drying drum mounted in the tank body, wherein an air inlet and an air outlet of the air duct are respectively connected with a rear part and a front part of the drying drum to form a closed loop together with the drying drum; a fan is arranged in the air duct, wherein the clothes dryer further comprises the heat pump system according to  claim 1 ; the evaporator of the heat pump system is arranged at the air inlet of the air duct, for condensing air flowing through the air duct; and the condenser of the heat pump system is located in the air duct between the fan and the evaporator, for heating air flowing through the air duct. 
     
     
         10 . The clothes dryer according to  claim 9 , wherein an auxiliary electric heating device is arranged in the air duct between the fan and the air outlet of the air duct.