A condensing type clothes dryer having a heat pump cycle, comprising: a drum in which an object to be dried is accommodated; a circulation duct that forms a circulation passage such that air circulates via the drum; a circulation fan configured to circulate the air along the circulation duct; a heat pump cycle having an evaporator and a condenser spaced from each other in the circulation duct, wherein the heat pump cycle is configured to absorb heat from the air discharged from the drum through the evaporator and to transfer the heat to air introduced into the drum through the condenser, using an operation fluid that circulates via the evaporator and the condenser; a bypass flow path formed at the circulation duct such that a portion of the air discharged from the drum bypasses the evaporator to be mixed with the air having passed through the evaporator at an upstream side of the condenser; and an opening and closing device (151, 160, 161, 162, 163) provided at the bypass flow path, and configured to selectively open or close the bypass flow path, and the opening and closing device (151, 160, 161, 162, 163) includes: a damper coupled to the bypass flow path by a hinge, and configured to open and close the bypass flow path; and an actuator (160, 161, 162, 163) configured to rotatably drive the damper, characterized in that the damper has a first end which is hinge-coupled to an upper portion of the bypass flow path, and a second end that can be rotated towards an upper portion of the evaporator; wherein a sealing member having elasticity is provided at the second end of the damper to prevent air from being introduced into the bypass flow path. a drum in which an object to be dried is accommodated; a circulation duct that forms a circulation passage such that air circulates via the drum; a circulation fan configured to circulate the air along the circulation duct; a heat pump cycle having an evaporator and a condenser spaced from each other in the circulation duct, wherein the heat pump cycle is configured to absorb heat from the air discharged from the drum through the evaporator and to transfer the heat to air introduced into the drum through the condenser, using an operation fluid that circulates via the evaporator and the condenser; a bypass flow path formed at the circulation duct such that a portion of the air discharged from the drum bypasses the evaporator to be mixed with the air having passed through the evaporator at an upstream side of the condenser; and an opening and closing device (151, 160, 161, 162, 163) provided at the bypass flow path, and configured to selectively open or close the bypass flow path, and the opening and closing device (151, 160, 161, 162, 163) includes: a damper coupled to the bypass flow path by a hinge, and configured to open and close the bypass flow path; and an actuator (160, 161, 162, 163) configured to rotatably drive the damper, characterized in that the damper has a first end which is hinge-coupled to an upper portion of the bypass flow path, and a second end that can be rotated towards an upper portion of the evaporator; wherein a sealing member having elasticity is provided at the second end of the damper to prevent air from being introduced into the bypass flow path. a damper coupled to the bypass flow path by a hinge, and configured to open and close the bypass flow path; and an actuator (160, 161, 162, 163) configured to rotatably drive the damper, characterized in that the damper has a first end which is hinge-coupled to an upper portion of the bypass flow path, and a second end that can be rotated towards an upper portion of the evaporator; wherein a sealing member having elasticity is provided at the second end of the damper to prevent air from being introduced into the bypass flow path.