Patent Publication Number: US-6698107-B2

Title: Drum for clothes drier

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a drum for a clothes dryer and, in particular, to a drum for a clothes dryer having a plurality of baffles projecting from an internal circumference of a drum for lifting and moving clothes to be dried. 
     2. Description of the Background Art 
     Generally, a clothes dryer dries laundry by removing water from the laundry. Usually, the clothes dryer is installed beside a washer to be used upon completion of the washing process. 
     FIG. 1 is a sectional view illustrating a conventional clothes dryer. The conventional clothes dryer includes a casing  10  having a hexahedral shape so as to have an internal space, a rotating drum  30  supported by a roller R placed inside the casing  10 , a driving motor  20  installed inside the casing  10  for generating a driving force in order to rotate the drum  30 , a belt  40  and a pulley  41  connecting the driving motor  20  with the drum  30  for transmitting rotational force from the driving motor  20  to the drum  30 , a circular rear plate  50  covering the rear side of the drum  30  and having an air suction port  51  constructed with a plurality of through holes, and a circular front plate  60  covering the front side of the drum  30  and having an input opening  61  and an air exhaust port  62 . A plurality of air holes  11  is formed in the casing  10 . 
     A suction duct  70  is connected to the air suction port  51  as a path through which air is drawn from outside into the drum  30 . A heater (H) is installed at an inlet portion of the suction duct  70  for heating the intake air. An exhaust duct  80  is connected to the air exhaust port  62  to provide a path through which air from inside the drum  30  is discharged upon completion of the drying process. A fan  91  is installed inside the exhaust duct  80  for generating blasts by the driving motor  20 . 
     A door (D) for opening/closing the clothes dryer is installed in a front surface of the casing  10 , and a filter (F) for filtering impurities, such as lint, is installed inside the exhaust duct  80 . 
     To operate the conventional clothes dryer, a user opens the door (D) in the front surface of the casing  10 , puts clothes into the drum  30  through the input opening  61  and closes the door (D). When the user turns on an operation switch, power is applied to operate the driving motor  20 . 
     The driving force generated by the driving motor  20  is transmitted to the drum  30  through the pulley  40  and the belt  41  to rotate the drum  30  and to operate the fan  91 . The clothes in the drum  30  drop according to rotation of the drum  30 . Simultaneously, air drawn from outside by the suction force of the fan  91  is heated by the heater (H), flows into the drum  30  through the suction port  51  to dry the clothes inside the drum  30 , is exhausted through the exhaust port  62  and is discharged outside the casing  10  through the exhaust duct  80 . A plurality of baffles  32  installed in an inner circumference of the drum  30  rotate together with the drum  30  to increase the area in contact with the heated air. 
     This process is performed continually until the clothes in the drum  30  are dry. When the drying process is finished, the user opens the door (D) and pulls out the dry clothes through the input opening  61 . 
     As depicted in greater detail in FIG. 2, a sectional view taken along line A—A of FIG. 1, and FIG. 3, a perspective view of the drum, the drum  30  is constructed with a cylindrical body  31 , and the plurality of baffles  32  project from the inner circumference of the cylindrical body  31  at regular intervals toward the center. The plurality of baffles  32  are formed along the length of the cylindrical body  31 . In the embodiment shown, three baffles project from the inner circumference of the cylindrical body  31  at a 120° angle. 
     When the cylindrical body  31  rotates, the plurality of baffles  32  serves to move and lift the clothes inside the drum  30  to the upper portion of the drum  30 . When the plurality of baffles  32  from which the clothes are hanging moves to an upper portion of the drum  30 , the clothes drop freely from the upper portion to a bottom portion of the drum  30 . The motion and heated air serve to dry the clothes in the drum. 
     However, in the conventional clothes dryer, because a length of the plurality of baffles  32  is the same as a length of the cylindrical body  31 , it is difficult to disperse the clothes uniformly. As a result, the clothes clump around one place of the drum  30 , and additional time is required to dry the clothes, thereby hampering dryer efficiency. 
     For example, as shown in FIG. 4, when the drum  30  rotates, heated air flows into the upper portion of the drum  30  and is exhausted through the exhaust port  62 . Accordingly, the clothes tossed up to the upper portion of the drum  30  by the baffles  32  drop freely and clump around the exhaust port  62  due to the same flow of the air. 
     In addition, when the clothes clump around the exhaust port  62 , it increases the friction of the air exhausted through the exhaust port  62 , as well as the load on and noise of the fan  91 . 
     SUMMARY OF THE INVENTION 
     In order to solve the above-mentioned problems, it is an object of the present invention to provide a drum for a clothes dryer which is capable of improving clothes drying efficiency by facilitating contact between clothes and heated air by providing a plurality of baffles to regularly disperse clothes housed inside a drum. 
     In order to achieve the above-mentioned object, a drum for a clothes dryer in accordance with the present invention includes a rotating cylindrical body for housing clothes, and a plurality of baffles projecting lengthwise from an inner circumference of the cylindrical body for lifting the clothes. The plurality of baffles is disposed so as to become more distant from or draw closer to the side of the cylindrical body gradually at regular intervals. 
     In another embodiment, a drum for a clothes dryer in accordance with the present invention includes a cylindrical rotating body for housing clothes, and a plurality of baffles projecting from an inner circumference of the cylindrical body lengthwise along the cylindrical body for lifting the clothes. At least one baffle is installed at each disposal domain, the inner circumference of the cylindrical body being divided into a plurality of disposal domains disposed lengthwise along the cylindrical body, each baffle being the same size as a width of each disposal domain at which each baffle is disposed and having the same width as each other. The plurality of baffles is formed so as to have the same interval in the circumferential direction of the cylindrical body. 
     A ratio (h/d) of a height (h) of each baffle to the inner diameter (d) of the cylindrical body is within the range of 1/10˜2/10. 
     A ratio (1/L) of a length (l) of each baffle to a length (L) of the cylindrical body is greater than 3/10 and less than 10/10. 
     In the drum for the clothes dryer in accordance with another embodiment of the present invention, the plurality of disposal domains are set so as to have a region which overlaps each other. 
     In the drum for the clothes dryer in accordance with still another embodiment of the present invention, the disposal domains do not overlap each other. 
     In yet another embodiment, a drum for a clothes dryer in accordance with the present invention includes a rotating cylindrical body for housing clothes, and a plurality of baffles projecting from an inner circumference of the cylindrical body lengthwise along the cylindrical body for lifting the clothes, the plurality of baffles being inclined with respect to the length of the cylindrical body. 
     The cylindrical body sucks air through the side surface and discharges air through the other side surface, and the baffles placed at the side surface through which air is drawn are formed so as to be lower than the baffles placed at the other side surface from which air is discharged. 
     An angle of inclination (α) of the plurality of baffles is 0°&lt;α≦20° in the length direction of the cylindrical body. 
     The plurality of baffles is formed so as to be inclined with respect to a normal direction of the cylindrical body. 
     An angle of inclination (β) of the plurality of baffles is 0°&lt;β≦45° toward the normal direction of the cylindrical body. 
     A ratio (h/d) of a height (h) of each baffle to the inner diameter (d) of the cylindrical body is within the range of 1/10˜2/10. 
     One of the baffles has a protrusion portion projecting from the end of the side from which air is discharged and having a certain height. 
     In a further embodiment, a drum for a clothes dryer in accordance with the present invention includes a rotating cylindrical body for housing clothes, and a plurality of baffles projecting from the inner circumference of the cylindrical body lengthwise along the cylindrical body. The cylindrical body sucks air through the side surface and discharges air through the other side surface, and one of the baffles has a protrusion portion projecting from the end of the side from which air is discharged and having a certain height. 
     In a still further embodiment, a drum for a clothes dryer in accordance with the present invention includes a rotating cylindrical body for housing clothes, and a plurality of baffles projecting from the inner circumference of the cylindrical body lengthwise along the cylindrical body, the plurality of baffles being formed so as to be inclined with respect to a normal direction of the cylindrical body. 
     The plurality of baffles is inclined with respect to the direction of rotation. 
     In yet another embodiment, a drum for a clothes dryer in accordance with the present invention includes a rotating cylindrical body for housing clothes, and a plurality of baffles projecting from an inner circumference of the cylindrical body lengthwise along the cylindrical body for lifting the clothes, wherein at least one baffle is installed at each disposal domain and is formed so as to be inclined with respect to the length of the cylindrical body when the inner circumference of the cylindrical body is divided into a plurality of disposal domains lengthwise along the cylindrical body. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. 
     In the drawings: 
     FIG. 1 is a longitudinal sectional view illustrating a conventional clothes dryer; 
     FIG. 2 is a sectional view illustrating a conventional drum taken along line A—A of FIG. 1; 
     FIG. 3 is a perspective view illustrating the drum of the conventional clothes dryer; 
     FIG. 4 is a longitudinal sectional view illustrating an air flow state in the conventional clothes dryer; 
     FIG. 5 is a longitudinal sectional view illustrating a clothes dryer in accordance with a first embodiment of the present invention; 
     FIG. 6 is a sectional view illustrating a drum taken along line B—B of FIG. 5; 
     FIG. 7 is a perspective view illustrating the drum of the clothes dryer in accordance with the first embodiment of the present invention; 
     FIG. 8 is a perspective view illustrating an alternative drum structure for the clothes dryer in accordance with the first embodiment of the present invention; 
     FIG. 9 is a perspective view illustrating a drum structure for a clothes dryer in accordance with a second embodiment of the present invention; 
     FIG. 10 is a perspective view illustrating a drum structure for a clothes dryer in accordance with a third embodiment of the present invention; 
     FIG. 11 is a perspective view illustrating a drum structure for a clothes dryer in accordance with a fourth embodiment of the present invention; 
     FIG. 12 is a longitudinal sectional view illustrating a drum structure for a clothes dryer in accordance with a fifth embodiment of the present invention; 
     FIG. 13 is a sectional view illustrating the drum taken along line C—C of FIG. 12; 
     FIG. 14 is a side view illustrating an angle of inclination of a baffle of the drum in accordance with the fifth embodiment of the present invention; 
     FIG. 15 is a perspective view illustrating the drum for the cloth dryer in accordance with the fifth embodiment of the present invention; 
     FIG. 16 is a detail drawing illustrating a protrusion portion formed at the baffle of the drum in accordance with the fifth embodiment of the present invention; 
     FIG. 17 is a longitudinal sectional view illustrating a drum for a cloth dryer in accordance with a sixth embodiment of the present invention; 
     FIG. 18 is a perspective view illustrating the drum for the cloth dryer in accordance with the sixth embodiment of the present invention; 
     FIG. 19 is a perspective view illustrating a drum for a cloth dryer in accordance with a seventh embodiment of the present invention; 
     FIG. 20 is a perspective view illustrating a drum for a cloth dryer in accordance with an eighth embodiment of the present invention; and 
     FIG. 21 is a development view illustrating a drum for a cloth dryer in accordance with a ninth embodiment of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Hereinafter, embodiments of a drum for a cloth dryer in accordance with the present invention will be described in detail with reference to the accompanying drawings. 
     The same reference numerals will be given to the same parts as the conventional art. 
     FIGS. 5-8 illustrate a clothes dryer in accordance with a first embodiment of the present invention. 
     As depicted in FIG. 5, in the clothes dryer in accordance with the first embodiment of the present invention, a cylindrical drum  100  is rotatively supported by a plurality of rollers inside a casing  10 , and a driving motor  20  is installed at a internal lower portion of the casing  10 . The driving motor  20  and the drum  100  are connected by a pulley  40  and a belt  41 , and the driving force of the driving motor  20  is transmitted to the drum  100 . 
     A circular rear plate  50  is attached to the drum  100  so as to cover a rear portion of the drum  100 , and a suction port  51  having a plurality of holes therethrough is formed at an upper portion of the rear plate  50 . 
     A suction duct  70  is connected to the suction port  51  of the rear plate  50  in order to draw outside air into the drum  100 , and a heater (H) for heating the sucked air is installed at an inlet portion of the suction duct  70 . 
     A circular front plate  60  is installed at a front portion of the drum  100  so as to cover the front portion of the drum  100 . Provided in the front plate  60  are an input opening  61 , through which a user puts/pulls clothes into/from the drum  100 , and an exhaust port  62 , constructed with a plurality of holes for exhausting air from inside the drum  100 . 
     An exhaust duct  80 , which extends to the outside of the casing  10 , is connected to the exhaust port  62  of the front plate  60 , and a fan  91  is installed inside the exhaust duct  80  in order to generate air flow by receiving the driving force from the driving motor  20 . 
     As depicted in FIGS. 6 and 7, the drum  100  includes a cylindrical body  110  for housing clothes and a plurality of baffles  111  projecting from disposal domains disposed on the inner circumference of the cylindrical body  110  and having a certain height. 
     The plurality of baffles  111  is placed so as to become progressively more distant from the side of the cylindrical body  110  at regular intervals. 
     The inner circumference of the cylindrical body  110  is divided into three disposal domains (S 1 ), (S 2 ), (S 3 ), each having the same width and each disposal domain overlapping the next adjacent disposal domain to a specific degree. 
     With respect to a center line (C) at right angles relative to the length of the cylindrical body  110 , a disposal domain (S) is demarcated into two disposal domains (S 1 ) and (S 3 ). As can be seen, one disposal domain (S 2 ) overlaps with the disposal domains (S 1 ) and (S 3 ). 
     The disposal domains (S 1 ), (S 2 ), (S 3 ) have a cylindrical shape and a specific width. 
     One of the plurality of baffles  111  is installed at each of the disposal domains (S 1 ), (S 2 ), (S 3 ), each baffle  111  having the same length as the width of each disposal domain (S 1 ), (S 2 ), (S 3 ) and each baffle  111  maintaining a specific distance from adjacent baffles in the circumferential direction of the cylindrical body  110 . 
     As depicted in FIGS. 7 and 8, each of the three baffles  111  is installed in the order of the disposal domains (S 1 ), (S 2 ), (S 3 ) in the rotational direction of the drum  100 . 
     In comparison with the inner diameter (d) of the cylindrical body  110 , a ratio (h/d) of the height (h) of each baffle  111  to the inner diameter (d) of the cylindrical body  110  is within the range of 1/10˜2/10. 
     In addition, in comparison with a length (L) of the cylindrical body  110 , a ratio (1/L) of a length (l) of each baffle  111  to a length (L) of the cylindrical body  110  is greater than 3/10 and less than 10/10. 
     In FIG. 5, unexplained reference numeral F is a filter, and reference numeral  11  is an suction hole through which air is sucked from outside. 
     The operation and the effects of the clothes dryer in accordance with the first embodiment of the present invention will be described in more detail. 
     A user opens the door (D), puts clothes into the drum  100  through the input opening  61  and closes the door (D). When the user turns on an operation switch, power is applied to the driving motor  20 , and the driving motor  20  is operated. When the driving motor  20  is operated, the driving force of the driving motor  20  is transmitted to the drum  100  through the belt  40  and the pulley  41  to rotate the drum  100  and to operate the fan  91 . 
     The clothes put into the drum  100  are tossed due to rotation of the drum. At the same time, air sucked through the suction duct  70  by the suction force of the fan  91  is heated by the heater (H), and the heated air flows into the drum  100  through the suction port S 1  of the rear plate  50 . 
     The heated air sucked into the drum  100  through the suction port  51  dries the clothes dropping rotatively inside the drum  100 , is exhausted through the exhaust port  62 , and is discharged through the exhaust duct  80 . 
     The clothes housed inside the drum  100  move to the upper portion of the drum  100  by the plurality of baffles  111  respectively formed at the plurality of disposal domains (S) of the cylindrical body  110  of the drum  100  and drop, and the process is repeated. 
     Herein, because each baffle  111  of the drum  100  projects from each disposal domain and because the plurality of baffles  111  are formed in the circumferential direction as a plurality of platforms, the clothes can be regularly dispersed and moved inside the drum  100 , and the clothes come into greater contact with the heated air, thereby improving clothes drying efficiency. In addition, clothes are prevented from clumping around the exhaust port  62 , so that the clothes come into contact more easily with the heated air, and resistance against the air can be minimized. 
     The above-described process is performed continually until the clothes put into the drum  100  are dry, whereupon the user opens the door (D) and removes the clothes through the input opening  61 . 
     FIG. 9 is a development view illustrating a drum structure for a clothes dryer in accordance with a second embodiment of the present invention. 
     As depicted in FIG. 9, in the drum  100  in accordance with the second embodiment of the present invention, unlike the first embodiment of the present invention, the disposal domains at which each baffle is installed do not overlap each other. 
     In this configuration, the three disposal domains (S 1 ), (S 2 ), (S 3 ), which do not one another, are demarcated on the inner circumference of the cylindrical body  110 , one of baffles  112  having a specific height being installed at each disposal domain (S 1 ), (S 2 ), (S 3 ). 
     Each baffle  112  is placed at each disposal domain (S 1 ), (S 2 ), (S 3 ) so as to have a specific distance each other in the circumferential direction of the cylindrical body  110 . 
     Herein, as depicted in FIG. 9, each of the three baffles  112  is installed in the order of the disposal domains (S 1 ), (S 2 ), (S 3 ) from the front plate  60  to the rear plate  50  in the rotational direction of the drum  100 . 
     FIG. 10 is a perspective view illustrating a drum structure for a clothes dryer in accordance with a third embodiment of the present invention. 
     As depicted in FIG. 10, in the drum  100  in accordance with the third embodiment of the present invention, three disposal domains are demarcated so as not to be overlapped each other, and each baffle  113  having a specific height is installed to each disposal domain (S 1 ), (S 2 ), (S 3 ). 
     In the three disposal domains (S 1 ), (S 2 ), (S 3 ), one baffle is respectively formed at both sides disposal domains (S 1 ), (S 3 ) so as to place at the same line each other in the length direction. Two baffles are formed at the center disposal domain (S 2 ) so as to have a certain distance from each baffle  113  formed at the side disposal domains (S 1 ), (S 3 ) in the circumferential direction. 
     A total of four baffles are placed at regular intervals in the circumferential direction. 
     FIG. 11 is a perspective view illustrating a drum structure for a clothes dryer in accordance with a fourth embodiment of the present invention. 
     In the drum  100  in accordance with the fourth embodiment of the present invention, on the contrary to the baffle arrange structure in accordance with the third embodiment of the present invention, in three disposal domains (S 1 ), (S 2 ), (S 3 ), two baffles  114  are respectively formed at both sides disposal domains (S 1 ), (S 3 ) so as to place at the same line each other in the length direction. One baffle is formed at the center disposal domain (S 2 ). 
     A total of five baffles  114  are placed at regular intervals in the circumferential direction of the cylindrical body  110 . 
     In the clothes dryer in accordance with the second, third and fourth embodiments of the present invention, because the plurality of baffles are formed in the circumferential direction as a plurality of platforms, it is possible to prevent the clothes from gathering around the exhaust port  62  and to disperse the clothes regularly inside the drum  100 . Accordingly, the clothes can be easily contacted with the heating air, the flow resistance of the air can be minimized, clothes drying time can be shortened, and clothes drying efficiency can be improved. 
     FIGS. 12-16 illustrate a clothes dryer in accordance with a fifth embodiment of the present invention. 
     As depicted in FIG. 12, the clothes dryer in accordance with the fifth embodiment of the present invention includes the casing  10 , the drum  100  rotatively installed inside the casing  10 , and the driving motor  20  installed inside the casing  10  and rotating the drum  100 . 
     The rear plate  50  is installed to the rear of the drum  100 , and the front plate is installed to the front of the drum  100 . The suction duct  70  is connected to the suction port  51  of the rear plate  50 , and the heater (H) is installed to an inlet portion of the suction port  70 . 
     The inlet opening  61  and the exhaust port  62  are formed at the front plate  60 , and the exhaust duct  80  is connected to the exhaust port  62 . The fan  91  rotated by the driving motor  20  is installed inside the exhaust duct  80 . 
     Particularly, the drum  100  includes the cylindrical body  110  housing clothes and the plurality of baffles  120  projecting from the inner circumference of the cylindrical body  110  and moving the clothes when the cylindrical body  110  is rotated. 
     The baffles  120  are formed so as to be similar to the length of the cylindrical body  110  and are placed at regular intervals in the circumferenctial direction of the cylindrical body  110 . The baffles  120  are inclined at a certain angle toward the length direction of the drum  100 . 
     As depicted in FIG. 14, it is preferable to set an angle of inclination (α) of the plurality of baffles  120  as 0°&lt;α≦20°. 
     In the plurality of baffles  120 , on the basis of the baffle lifting the clothes in the rotational direction of the drum  100 , a height of the baffle abutting on the rear plate  50  is lower than a height of the baffle abutting on the front plate  60 . 
     A ratio (h/d) of the height (h) of each baffle  120  to the inner diameter (d) of the cylindrical body  110  is within the range of 1/10˜2/10. 
     As depicted in FIG. 16, a protrusion portion  122  is formed at the end of a certain baffle of the baffles  120 . In more detail, the baffle  120  having the protrusion portion  62  is constructed with a wing portion  121  projecting from the inner circumference of the cylindrical body  110  and the protrusion portion  122  projected relatively high from the end of the wing portion  121 . 
     In the clothes dryer in accordance with the fifth embodiment of the present invention, by the baffles  120  projected so as to be inclined, the clothes can be regularly dispersed and moved inside the drum  100 , and it is possible to prevent the clothes from gathering around the exhaust port  62 . 
     In more detail, the heating air sucked into the drum  100  through the suction port  62  of the rear plate  50  flows inside the drum  100  and is exhausted through the exhaust port  62  of the front plate  60 . At the same time, the clothes rotating together with the drum  100  by engaging with the baffles  120  are moved to the rear plate  50  at which the suction port  51  is formed in the inclination direction of the baffles  120 . 
     Accordingly, the clothes come into prolonged contact with the heated air, and the clothes do not gather around the front plate  60  where the exhaust port  62  is formed, thereby improving drying efficiency. 
     In the meantime, as depicted in FIG. 16, because the protrusion portion  122  formed at one or more than one of the plurality of baffles  120  has the larger engaging area with the clothes, the clothes can be more easily dispersed, and it is possible to prevent the clothes from gathering around the exhaust port  62  more efficiently. 
     FIG. 17 is a longitudinal sectional view illustrating a drum for a cloth dryer in accordance with a sixth embodiment of the present invention, and FIG. 18 is a development view illustrating the drum for the cloth dryer in accordance with the sixth embodiment of the present invention. 
     The drum in accordance with the sixth embodiment of the present invention includes the cylindrical body  110  housing clothes and rotating, and a plurality of baffles  130  projecting from the inner circumference of the cylindrical body  110  in a length-direction of the cylindrical body and formed so as to be inclined with respect to a normal direction of the cylindrical body  110 . 
     The plurality of baffles  130  is formed at regular intervals in the circumferential direction of the cylindrical body  110 . An angle of inclination (α) of the plurality of baffles  130  is 0°&lt;α≦20° toward the length direction of the cylindrical body  110 , and an angle of inclination (β) of the plurality of baffles  130  is 0°&lt;β≦45° toward the normal direction of the cylindrical body. 
     The height (h) of the baffles  130  is the same each other, and a ratio (h/d) of the height (h) of each baffle  130  to the inner diameter (d) of the cylindrical body is within the range of 1/10˜2/10. 
     A protrusion portion  132  having a certain height is formed at the end of a certain baffle of the baffles  130 . 
     FIG. 19 is a perspective view illustrating a drum for a cloth dryer in accordance with a seventh embodiment of the present invention. 
     As depicted in FIG. 19, in the drum in accordance with the seventh embodiment of the present invention, a plurality of baffles  140  are formed so as to have an angle of inclination (β) toward the normal direction of the cylindrical body  110  and are placed at regular intervals in the circumferential direction of the cylindrical body  110 . 
     The baffles  140  are formed so as to be inclined with respect to the rotational direction. 
     In the clothes dryer in accordance with the sixth and seventh embodiments of the present invention, because a plurality of baffles are formed so as to be inclined with respect to the length direction and the normal direction of the drum  100 , the clothes can be regularly dispersed and moved inside the drum  100 , and resistance air against air flow can be minimized by preventing the clothes from gathering around the exhaust port  62 , thereby reducing load on the fan and noise attendant with the drying process. By improving clothes drying efficiency, clothes drying time can be shortened, and power consumption can be minimized. 
     FIG. 20 is a perspective view illustrating a drum for a clothes dryer in accordance with an eighth embodiment of the present invention. 
     As in the fifth embodiment, in the clothes dryer in accordance with the eighth embodiment of the present invention, a plurality of baffles  150  are formed so as to have an angle of inclination (α) toward the length direction of the cylindrical body  110 . 
     Each of the baffles  150  is formed so as to be inclined. The height of the baffles  155  abutting the front plate  60  is greater than the height of the baffles  150  abutting the rear plate  50 . 
     Herein, an angle of inclination (γ) of the plurality of baffles is 0°&lt;γ≦10°. 
     In the clothes dryer in accordance with the eighth embodiment of the present invention, because the baffles  150  are formed so as to have a larger engaging area toward the exhaust port of the front plate  60 , it is possible to prevent the clothes from gathering around the exhaust port  62 . 
     FIG. 21 is a perspective view illustrating a drum for a cloth dryer in accordance with a ninth embodiment of the present invention. 
     The ninth embodiment of the present invention combines the construction of the first embodiment with the construction of the fifth embodiment. 
     As depicted in FIG. 21, in the clothes dryer in accordance with the ninth embodiment of the present invention, each baffle  161 ,  162 ,  163  is installed at each disposal domain (S 1 ), (S 2 ), (S 3 ) so as to have a regular length toward the length direction of the cylindrical body  110 . 
     In addition, the baffles  161 ,  162 ,  163  are formed so as to be inclined with respect to the length of the cylindrical body  110 . Although each baffle  161 ,  162 ,  163  has the same angle of inclination (α 1 , α 2 , α 3 ) in the shown embodiment, baffles having different angles of inclination according to design conditions are considered within the scope of the present invention. 
     In the clothes dryer in accordance with the ninth embodiment of the present invention, each baffle  161 ,  162 ,  163  can be variously formed at each disposal domain as in the second through fourth embodiments, or each baffle  161 ,  162 ,  163  can be formed so as to have various angles of inclination and heights as in the sixth through eighth embodiments. 
     As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalence of such metes and bounds are therefore intended to be embraced by the appended claims.