A drum type washing machine comprising: a cabinet; a tub to hold water therein when washing laundry; wherein the tub is directly fixed to the cabinet; a drum rotatably placed in the tub; a shaft connected to the drum; a bearing housing to rotatably support the shaft; a motor to rotate the shaft; a suspension to reduce vibration of the drum; a buffering-and-sealing device provided at the rear side of the tub to buffer a space between the shaft and the tub and to seal the rear side of the tub; characterized in that the suspension is connected to the bearing housing, and in that a drying device is extended from one side to another side of the tub to circulate air to dry laundry in the drum; wherein the drying device comprises: a circulation duct that extends from the rear side of the tub to a front side of the tub; a condensing device provided in the tub and installed near an inlet of the circulation duct to condense moisture in the circulated air; a blower installed in the circulation duct to forcibly circulate air; and a heater installed in the circulation duct to heat the circulated air, wherein the circulation duct comprises: an inlet duct extended from the rear side of the tub to the blower; a heater duct in which the heater is placed, the heater duct extended from an outlet duct of the blower toward the front side of the tub; and a connection duct extended from the heater duct to the front side of the tub, wherein the inlet duct comprises a temperature sensor for detecting a temperature of the circulated air, wherein the condensing device comprises a metal condensing plate placed on an inner surface of the tub at the side of the tub, wherein the condensing device comprises a water supply to supply water to the condensing plate through an inlet port of the circulation duct or the tub to condense the humidity. a cabinet; a tub to hold water therein when washing laundry; wherein the tub is directly fixed to the cabinet; a drum rotatably placed in the tub; a shaft connected to the drum; a bearing housing to rotatably support the shaft; a motor to rotate the shaft; a suspension to reduce vibration of the drum; a buffering-and-sealing device provided at the rear side of the tub to buffer a space between the shaft and the tub and to seal the rear side of the tub; characterized in that the suspension is connected to the bearing housing, and in that a drying device is extended from one side to another side of the tub to circulate air to dry laundry in the drum; wherein the drying device comprises: a circulation duct that extends from the rear side of the tub to a front side of the tub; a condensing device provided in the tub and installed near an inlet of the circulation duct to condense moisture in the circulated air; a blower installed in the circulation duct to forcibly circulate air; and a heater installed in the circulation duct to heat the circulated air, a circulation duct that extends from the rear side of the tub to a front side of the tub; a condensing device provided in the tub and installed near an inlet of the circulation duct to condense moisture in the circulated air; a blower installed in the circulation duct to forcibly circulate air; and a heater installed in the circulation duct to heat the circulated air, wherein the circulation duct comprises: an inlet duct extended from the rear side of the tub to the blower; a heater duct in which the heater is placed, the heater duct extended from an outlet duct of the blower toward the front side of the tub; and a connection duct extended from the heater duct to the front side of the tub, wherein the inlet duct comprises a temperature sensor for detecting a temperature of the circulated air, wherein the condensing device comprises a metal condensing plate placed on an inner surface of the tub at the side of the tub, wherein the condensing device comprises a water supply to supply water to the condensing plate through an inlet port of the circulation duct or the tub to condense the humidity. an inlet duct extended from the rear side of the tub to the blower; a heater duct in which the heater is placed, the heater duct extended from an outlet duct of the blower toward the front side of the tub; and a connection duct extended from the heater duct to the front side of the tub, wherein the inlet duct comprises a temperature sensor for detecting a temperature of the circulated air, wherein the condensing device comprises a metal condensing plate placed on an inner surface of the tub at the side of the tub, wherein the condensing device comprises a water supply to supply water to the condensing plate through an inlet port of the circulation duct or the tub to condense the humidity.