| 摘要 |
A high efficiency vented clothes dryer having a heat pump system comprises: an outer drum (1); an air-fed drying passage (2) communicating the outer drum (1) to the exterior; and an exhaust air drying passage (3). The clothes dryer is further provided with a heat pump system comprising a first evaporator (15) and a second evaporator (16) arranged in parallel or in series. The first evaporator (15) is disposed in the exhaust air drying passage (3) and the second evaporator (16) is disposed in an external atmosphere so as to absorb heat from exhaust air and external air, respectively. By arranging the evaporators in the drying passage and the external atmosphere, respectively, the heat pump system can simultaneously or separately absorb heat from air exhausted by the clothes dryer and from air in an environment where the clothes dryer is located, thereby realizing heating of the fed air by using heat in the exhaust air and heat in the environment, and accordingly increasing a drying speed of the clothes dryer. Alternatively, the evaporator (15) can be arranged to pass through the exhaust air drying passage (3) so that a first portion (13) thereof is positioned in the exhaust air drying passage (3) while a second portion (14) thereof is positioned in the external air, thereby realizing the above object. |
