KR20050050558A - Drum type washing and drying machine - Google Patents

Abstract

A drum type laundry dryer is provided which allows drying of laundry in a configuration in which the rotating drum is inclined.

The laundry accommodated in the rotating drum 5 is accommodated in the water tank 3 by tilting the rotating drum 5 and controlling the rotation of the rotating drum 5 which is rotationally driven by the drum driving motor 4. Show behavior.

Description

Drum-type laundry dryer {DRUM TYPE WASHING AND DRYING MACHINE}

The present invention relates to a drum type laundry dryer in which a rotating drum is disposed in a water tank so that its rotating shaft is inclined downward from the front side to the back side.

Fig. 7 shows the structure of a drum type washing machine according to the prior art, in which a rotating drum 61 is arranged in the water tank 63 in the washing machine housing 67 so that the rotation axis direction thereof becomes horizontal. The door 64 provided at the front side of the washing machine housing 67 is opened, and laundry is introduced into the rotating drum 61 from the laundry entrance 68 formed in the water tank 63 to face the door 64. By rotating the rotary drum 61 by the drum drive motor 65, the laundry accommodated in the rotary drum 61 is caught by the stirring projection 66 provided on the inner circumferential wall of the rotary drum 61, and lifted therefrom. The laundry is swept away by washing the loaded laundry from a suitable height (see Patent Document 1).

By providing a drying function in the drum type washing machine having the above configuration, it is possible to configure a drum type laundry dryer having a function of drying laundry or wet clothes after dehydration in addition to washing. That is, when exhausting from the water tank 63, since the air containing the moisture in the rotating drum 61 is discharged from the permeation | transmission hole 62 formed in the circumferential surface, air containing moisture passes through a dehumidification means. After dehumidification, the laundry or the clothes accommodated in the rotating drum 61 can be dried by heating by heating means to form a circulation air circulation path in the water tank 63.

However, since drum washing machines or drum laundry dryers are arranged with the rotating drum in the transverse direction, loading and unloading of laundry is performed from the front side, and the structure is not suitable for the pain and narrow house conditions accompanied by bending work. Has been. In order to solve the problem of the drum-type laundry dryer, by inclining the rotary shaft so that the opening side of the rotary drum is upward, the drum-type laundry dryer can be placed in a narrow space by making it easier to insert and remove the laundry. It can be (refer patent document 2).

(Patent Document 1) Japanese Patent Application Laid-Open No. 09-215894 (2nd to 6th pages, Fig. 1)

(Patent Document 2) Japanese Patent Laid-Open No. 2003-053087 (3rd to 5th page, Fig. 2)

However, when the rotating drum is inclined from the horizontal direction, the laundry contained in the rotating drum is deflected to a lower position in the rotating drum, that is, the bottom side of the rotating drum formed into a cylindrical shape having a bottom, and when the rotating drum is rotated, Since the laundry lifted in the circumferential direction by the stirring projection provided on the inner circumferential surface falls to the bottom side of the rotating drum when the laundry falls from above, the rotation of the rotating drum acts to collect the laundry on the bottom side. Therefore, in the drum type laundry dryer of the structure in which the rotating drum was inclined, there was a problem that washing and drying did not reach every corner of every laundry.

In particular, in the drying process, it is necessary to promote the drying by touching the warm air to every corner of the laundry, but during the drying process, there is no water storage in the rotating drum, so there is no movement of the laundry due to the flow of water, and the lighter the drying is, Since the laundry is difficult to receive the stirring action by the stirring projection provided on the inner circumferential surface of the rotating drum, the laundry tends to collect on the bottom side of the rotating drum, and there is a problem that dry unevenness and wrinkles tend to occur.

An object of the present invention is to provide a drum type laundry dryer in which a laundry in the drying step is sufficiently stirred even in a structure in which the rotating drum is inclined.

In order to achieve the above object, the drum type laundry dryer according to the present invention is formed in a cylindrical shape having a bottom and disposed in a water tank such that a rotating drum driven by a drum drive motor is inclined downward from the open end side to the bottom side. By controlling the water supply, drainage, and rotation of the drum drive motor, the washing, rinsing, and dehydration processes are carried out, and the air in the rotating drum is evacuated, dehumidified, heated, and blown again in the rotating drum. And a drying process by controlling the rotation of the air circulation and the drum drive motor, wherein in the drying process, the laundry motion according to the rotation of the rotating drum is changed in each rotation direction with respect to each of a plurality of rotation speeds different from each other. At least three kinds of setting predetermined rotation time and predetermined rotation stop time and repeating this for a predetermined time And that the rotation control mode is made based on dried control step of controlling the rotation of the drum driving motor is set such that at least a predetermined set time repetition characterized.

According to the above configuration, since at least three kinds of rotation control modes for giving different behavior to the laundry contained in the rotating drum are set, different behavior of the laundry is repeated over a predetermined time. When the rotation control mode is set to plural so that the laundry can move back and forth, left and right, and up and down in the rotating drum, the laundry develops, and the hot air blows uniformly, the laundry can be set. Since drying is accelerated | stimulated and drying is performed efficiently, generation | occurrence | production of a drying nonuniformity and a wrinkle can be suppressed.

In the above configuration, in addition to the standard drying control step, the water content is set by setting the initial drying control step of controlling the rotation of the drum drive motor so that the plurality of rotation control modes in the initial stage of the drying step are repeated for a predetermined set time. Drying control corresponding to the laundry in this large state can be provided.

Furthermore, in addition to the standard drying control process, the final drying controls the rotation of the drum drive motor while controlling the rotation of the drum drive motor so that the plurality of rotation control modes in the final stage of the drying process are repeated for a predetermined set time. By setting the control step, the drying control corresponding to the laundry in the dry state is executed, the heating of the blowing air is stopped, and the drying is continued only by blowing, so that the laundry at the end of the drying step has a temperature lowered. You can do

In addition to the standard drying control step, the initial drying control step of controlling the rotation of the drum drive motor so that the plurality of rotation control modes in the initial step of the drying step is repeated for a predetermined set time, and the final step of the drying step By controlling the rotation of the drum drive motor so that the plurality of rotation control modes in the predetermined time are repeated, and setting the finishing drying control process for controlling the heating of the air circulation, from the state of high water content to the state of drying. Drying control according to the state of the laundry can be executed.

By switching the initial drying control step, the reference drying control step, and the final drying control step by controlling the elapsed time of the drying step, it is possible to set each drying control step every predetermined time at which drying is expected to proceed.

In addition, the switching of the initial drying control step, the reference drying control step, and the final drying control step can be performed by controlling the drying degree based on the dryness detection of the laundry, so that each drying control step corresponding to the dry condition of the laundry can be set more effectively. Done.

In addition, the rotational speed corresponding to the load of the drum drive motor is set by setting the rotational speed of each rotation control mode, the predetermined rotation time, the predetermined rotation stop time, and the repetition predetermined time in correspondence with the amount of laundry contained in the rotation drum. Control mode can be set.

Fig. 1 shows the main part configuration of the drum type laundry dryer 1 according to the embodiment, in which the water tank 3 is supported by a suspension structure not shown in the washing machine housing 2, and the bottom of the water tank 3 is bottomed. The rotating drum 5 formed in a cylindrical shape is disposed. The water tank 3 and the rotating drum 5 have the opening end side at the front side of the washing machine housing body 2 and the bottom side at the rear side of the washing machine housing body 2, and the rotating drum 5 has its rotary shaft center ( R) is supported so as to be inclined downward from the horizontal direction H to the angle ?? from the front side to the back side, and the rotating drum 5 is attached to the drum drive motor 4 attached to the bottom of the water tank 3. Driven by rotation.

The water tank 3 is formed by joining a water tank lid 3b having a laundry entrance 11 for putting laundry into and out of the rotating drum 5 at the opening end of the water tank body 3a having a bottomed cylindrical shape. The door 8 is opened and closed freely on the inclined surface 2a formed on the front side of the washing machine housing 2 so as to face the laundry entrance 11. By opening the door body 8, the laundry can be inserted into and removed from the rotating drum 5, and a part or the whole of the door body 8 is formed of a transparent body to see the inside of the rotating drum 5 from the outside. can do. In addition, a bellows 13 formed of a flexible elastic body is disposed around the laundry entrance 11, and when the door 8 is closed, one end of the bellows 13 is pressed against the inner surface thereof to rotate the drum 5. Water splashing with the rotation of is prevented from jumping out from within the water tank 3. In the present embodiment, the main body 3a and the lid 3b of the water tank 3 have been described as being separated, but these can also be formed integrally. For example, when the main body 3a and the cover 3b are formed of a plastic material, they can be formed integrally and can be formed integrally even if a metal material is used.

As shown in FIG. 2, the rotating drum 5 is inclinedly disposed as described above and the door 8 is provided in the washing machine housing 2 so as to face the opening. ) Is directed toward the face of the person standing in front of the drum-type laundry dryer 1, and the state of bending the waist is minimal when the door 8 is opened and the laundry is inserted into and removed from the rotating drum 5. You can add and remove laundry. Therefore, it is not necessary to secure a space with sufficient space in front of the drum type laundry dryer 1, and it becomes possible to install the drum type laundry dryer 1 in a narrow space such as a toilet where a conventional vertical type washing machine is installed. It can be comprised by the drum type laundry dryer 1 suitable also for a residential environment.

The laundry entrance 11 is formed in such a manner that its center position is eccentrically upward from the rotation axis R of the rotary drum 5 so as to face the laundry entrance 11 so as to face the laundry entrance 11. The door body 8 is provided substantially coinciding on the center line of 11). Thus, when the laundry entrance 11 and the door body 8 are provided in the position whose center position is deflected upward from the rotation axis of the rotating drum 5, the door 8 is opened and through the laundry entrance 11 When looking into the inside of the rotating drum 5, the part which becomes a square becomes small, and since the laundry accommodated in the rotating drum 5 is seen over a wide range, the forgetting of taking out a laundry becomes hard to occur. In particular, like the drum type laundry dryer 1 according to the present embodiment, the rotating drum 5 is inclined and the door body 8 is provided on the inclined surface 2a corresponding to the inclination angle of the rotating drum 5. In, the inside of the rotating drum 5 can be seen more widely.

The inclination angle [theta] for tilting the rotating drum 5 was concluded that the inventors of the present invention conducted various investigations, and preferably [theta] = 30 ± 5 degrees. By tilting the rotating drum 5 at an inclination angle θ = 30 ± 5 degrees, even if there is a height difference from children (except infants) to adults, even if disabled using a wheelchair, the operation of putting in and removing laundry is most performed. The state which is easy to do is obtained. In addition to the inclined arrangement of the rotary drum 5, the center positions of the laundry entrance 11 and the door body 8 are deflected upwards from the rotary shaft center R of the rotary drum 5 so that the laundry is moved. Not only it becomes easy to put in and take out, but also the operation state in each process of washing | cleaning from the transparent door body 8 becomes easy to observe.

3 and 4 show the configuration of the drying function of the drum type laundry dryer 1, wherein the dehumidification duct 16 and the blowing duct 18 are integrally formed on the side circumferential surface of the water tank 3, The heating duct 19 is attached to the outer bottom surface of the water tank 3 as shown in FIG. When the blowing fan 15 provided in the heating duct 19 is rotationally driven, the air containing moisture in the rotating drum 5 is sent into the water tank 3 from the permeation holes 12 formed in the circumferential surface, and the water tank ( The air in 3) is discharged from the exhaust port 21 into the dehumidification duct 16. In the dehumidification duct 16, the dehumidification means 38 provided with the heat exchanger 51 which is cooled by the water poured from the water injection nozzle 52 by opening the water injection valve 53, and the exhaust port 21 The air discharged into the dehumidification duct 16 from) is cooled by the heat exchanger 51 and dehumidified by condensation of water vapor contained in the air. Water cooled by the heat exchanger 51 and water generated by condensation flow downward into the water tank 3 and are discharged from the drain groove 10 to the outside as shown by the broken arrow.

Since the dehumidification duct 16 and the blower duct 18 are connected by the connecting duct 32 at the front side, as shown by the white arrow, the dehumidified air is removed from the connecting duct 32 and the damping filter 17. ) Is sent to the heating duct 19 provided on the back side by the blowing duct 18.

FIG. 4 is a view showing the structure inside the heating duct 19 in a state in which the lower conduit 23 of the heating duct 19 formed by joining the lower conduit 23 and the upper conduit 24 up and down is separated. will be. The heater 20 is arrange | positioned in the heating duct 19, and the air blown from the said blower duct 18 is heated by the heater 20, and becomes warm air of predetermined temperature, and the water tank 3 is removed from the blower port 22. In the air. The bottom of the rotating drum 5 is provided with an air vent 39 formed with a plurality of openings on the circumference, and the warm air blown from the air vent 22 into the water tank 3 is rotated from the air vent 39 by the rotary drum 5. Supplied within. Since the warm air blown from the bottom side of the rotary drum 5 touches the laundry and deprives it of moisture, drying of the laundry is promoted, and air containing moisture is circulated from the exhaust port 21 into the dehumidification duct 16 again. This is done. The laundry is dried by repeating air circulation accompanied by dehumidification and heating.

When the rotary drum 5 is inclined as in the above configuration, the laundry accommodated in the rotary drum 5 tends to be biased toward the bottom side of the rotary drum 5, and when the rotary drum 5 is rotated, the laundry is bottomed. The damage which becomes easy to collect on the side occurs. In order to solve this problem, in the drum type laundry dryer 1 according to the present embodiment, laundry is rotated by the structure of the stirring protrusion 9 provided on the inner circumferential surface of the rotating drum 5 and the rotation control of the rotating drum 5. It is preventing from being collected in a specific place in the drum 5. However, in the drying step, there is no storage of water in the rotating drum 5, and the amount of water contained in the laundry decreases and becomes lighter as the drying proceeds. Thus, the stirring action and the rotating drum 5 of the laundry by the stirring projection 9 are carried out. The behavior of the laundry due to the rotational speed of) also differs from that of the washing step or the rinsing step. Therefore, in the drying step, it is necessary to prevent the deflection of the laundry and to perform the drying control to efficiently dry the laundry. The drying control in the present embodiment will be described below with reference to FIGS. 5A and 5B. In addition, S1, S2 ... shown in FIG. 5A and 5B are shown. Is a step number indicating the control procedure, which corresponds to the number written in the text.

The laundry to be dried contained in the rotating drum 5 exhibits a behavior according to the rotational speed of the rotating drum 5 or the change of the rotating direction. Therefore, if the rotation of the rotating drum 5 is controlled to obtain a plurality of changes in the behavior of the laundry, the laundry contained in the obliquely arranged rotating drum 5 exhibits various behaviors suitable for drying and is more effective than the case where the constant behavior is continued. The drying step can be carried out. In addition, since the behavior of the laundry changes with the amount of the laundry contained in the rotary drum 5, a control corresponding to the amount of the laundry is required. Here, the drum drive motor 4 is configured such that the three rotation control modes in which the predetermined rotation time and the predetermined rotation stop time in each rotation direction of the three rotation speeds in which the behavior of the laundry is different correspond to the amount of the laundry are repeated every predetermined time. To control.

5A and 5B, a quantity detection is performed to detect the amount of laundry contained in the rotating drum 5 (S1). A quantity detection can employ | adopt the method etc. which detect the quantity of laundry from the load state which the drum drive motor 4 receives. The time for executing each of the first to third rotation control modes is set on the basis of the detection of the quantity (S2). In each of the first to third rotation control modes, the rotation speed of the rotation drum 5, the time of forward rotation of the rotation drum 5 by the set rotation speed, the time of stopping the rotation to switch the rotation direction, and The time of reverse rotation of the rotating drum 5 by the set rotational speed is set.

First, the first rotation control mode is executed, and the rotation of the drum drive motor 4 is set so that the rotational speed of the rotation drum 5 becomes the first rotational speed (S3), and the rotational drive is performed for the first rotation time in the forward direction. (S4), the rotation drive is stopped by the first rotation stop time (S5), the rotation drive is driven in the reverse direction by the first rotation time (S6), and the rotation drive is stopped by the first rotation stop time (S7). In the first rotation control mode, when the diameter of the rotation drum 5 is 500 ± 50 mm, the first rotation speed is 80 to 120 r / min, and the rotation drum (for example, 2 seconds) is used for the first rotation time (for example, 2 seconds). 5) forward, stop for the first rotation stop time (e.g., 1 second), reverse rotation for the first rotation time (e.g., 2 seconds), and then rotate the first rotation stop time (e.g., For example, 1 second). By this operation, since the impact of the rotational direction is suddenly applied to the laundry stuck to the inner circumferential surface of the rotating drum 5 at the first rotational speed, the laundry is in a state in which the laundry is scattered. The behavior in which the position in the axial direction of the rotating drum 5 is changed is obtained. This first rotation control mode is repeated in the execution time (for example, three minutes) of the first rotation control mode set in step S2 (S8).

Next, the second rotation control mode is executed so that the rotation of the drum drive motor 4 is set so that the rotational speed of the rotation drum 5 becomes the second rotational speed (S9), and rotates forward by the second rotational time. It is driven (S10), the rotation drive is stopped by the second rotation stop time (S11), the rotation drive is driven by the second rotation time in the reverse direction (S12), the rotation drive is stopped by the second rotation stop time (S13). In the second rotation control mode, when the diameter of the rotation drum 5 is 500 ± 50 mm, the second rotation speed is 20 to 25 r / min, and the rotation drum (for example, 60 seconds) is used for the second rotation time (for example, 60 seconds). 5) forward, stop for a second rotation stop time (e.g., 2 seconds), reverse rotation for a second rotation time (e.g., 60 seconds), and then rotate the second rotation stop time (e.g., For 2 seconds). Since the rotating drum 5 is rotated and driven in a slow rotational speed forward and reverse direction by such an operation, the action of lifting the laundry in the rotational direction is not achieved, and the laundry rolls from the lower side of the rotating drum 5 to the front, rear, left and right. The stirring behavior is obtained, and the laundry is warmed uniformly by the warm air blown from below the bottom. This second rotation control mode is repeated in the execution time (for example, 5 minutes) of the second rotation control mode set in step S2 (S14).

Subsequently, a third rotation control mode is executed, the rotation of the drum drive motor 4 is set so that the rotational speed of the rotation drum 5 becomes the third rotational speed (S15), and the rotational drive in the forward direction for the third rotational time. (S16), the rotation drive is stopped by the third rotation stop time (S17), the rotation drive is driven in the opposite direction by the third rotation time (S18), and the rotation drive is stopped by the third rotation stop time (S19). In the third rotation control mode, when the diameter of the rotation drum 5 is 500 ± 50 mm, the third rotation speed is set to 35 to 45 r / min, and the rotation drum (for example, 60 seconds) is used for the third rotation time (for example, 60 seconds). 5) forward, stop for a third rotation stop time (e.g., 2 seconds), reverse rotation for a third rotation time (e.g., 60 seconds), and then rotate the third rotation stop time (e.g., For 2 seconds). By this operation, the laundry is lifted in the rotational direction by the rotation of the rotary drum 5, so that the laundry falls from a height position where its own weight becomes greater than the centrifugal force or inertia, and thus the upper and lower positions of the laundry are replaced. It is exposed to the warm air blown, and drying is accelerated. This third rotation control mode is repeated in the execution time (for example, 5 minutes) of the third rotation control mode set in step S2 (S20).

Each of the first, second and third rotation control modes is repeated within a set time set in the drying process (S21). In addition, the execution order of each of the first, second, and third rotation control modes is not limited to the order shown in Figs. 5A and 5B, and the execution order can be changed. In addition, it is preferable to provide at least three types of rotation control modes, and setting more than three types is more effective.

As described above, in the drying step, the laundry adheres to the inner circumferential surface of the rotating drum 5 in the first rotation control mode, and then the scattering is scattered to promote the replacement in the axial direction, and in the second rotation control mode, The laundry is rolled in the rotating drum 5 to be stirred back and forth and left and right, and in the third rotation control mode, the laundry is uniformly in contact with the warm air to promote drying.

Rotation control of the rotary drum 5 may be performed only by executing the order of the rotation control in the drying step as shown in Fig. 6A, but the rotation control as shown in Figs. 6B, 6C, and 6D. Set the initial drying control step (B) and the final drying control step (C) appropriately before and after the standard drying control step (A), and set the standard drying control step (A) according to the drying progress state of the laundry. 5A and 5B show a rotation control mode in which a drying process is divided into a plurality of stages and a plurality of rotation speeds corresponding to a drying state, a rotation time in a forward direction, a rotation stop time, a rotation time in a reverse direction, and a plurality of repetition execution times are set for each step. It can be executed in the order shown in Fig. 5B. The progress state of drying can be calculated | required based on the time progress of a drying process, or detection of a dry state. The dry state may be detected by a method using a dry sensor, but as shown in FIG. 3, a coolant temperature sensor 57 that detects a temperature of water cooled by the heat exchanger 51 flowing into the drain groove 10, and As shown in FIG. 4, a dry state can be detected from the detection output with the blowing air temperature detection sensor 56 which detects the temperature of the air blown by the heating duct 19. As shown in FIG.

The control shown in FIG. 6B shows a control example of the initial drying control step (B) set before the reference drying control step (A). This initial drying control process (B) is demonstrated with reference to FIG. 5A and 5B. In the initial drying control process, the first initial rotation speed is set to 20 to 25 r / min (S3), and the rotation drum 5 is rotationally driven in the forward direction at the first initial rotation time (for example, 30 seconds) (S4). The rotation is stopped by the first initial rotation stop time (for example, 2 seconds) (S5), the rotation drum 5 is driven to rotate in the reverse direction with the first initial rotation time (S6), and the rotation is performed by the first initial rotation stop time. (S7), if this control is repeated in the execution time of the first initial rotation control mode (e.g., 10 minutes) (S8), the rotating drum 5 becomes a slow rotational speed, so that the laundry is lifted in the rotational direction. No action is taken, and the behavior of stirring left and right under the rotating drum 5 is obtained, and the laundry is warmed uniformly by the warm air blown from below the bottom.

Subsequent to the execution of the first initial rotation control mode, the second initial rotation speed is set to 80 to 120 r / min (S9) to rotate the rotation drum 5 forward in the second initial rotation time (for example, 2 seconds). Drive (S10), stop rotation by a second initial rotation stop time (e.g., 1 second) (S11), drive rotation drum 5 in the reverse direction with a second initial rotation time (S12), and second initial When the rotation is stopped by the rotation stop time (S13), and this control is repeated in the execution time of the second initial rotation control mode (for example, 1 minute) (S14), the inner peripheral surface of the rotation drum 5 at the second initial rotation speed is repeated. Since the impact of the rotational direction is suddenly applied to the laundry in the stuck state, the laundry is in a state in which the laundry is scattered, and as a result, the behavior in which the laundry is replaced in the axial direction of the rotating drum 5 is obtained.

As described above, since the initial drying control step is in a state where the laundry is damp and thus wrinkles are less likely to occur, the first rotation control mode and the second rotation control mode are used to change the axial direction of the rotating drum 5 of the laundry. It is mainly one process.

After the initial drying control step (B) is repeatedly executed until a predetermined time or a dry state is detected, the above-mentioned reference drying control step (A) is executed.

In addition, as shown in FIG. 6C, it can also be set to perform a finish drying control process (C) after a reference drying control process (A). In the final drying control step (C), the heating of the blown air by the heater 20 is stopped with respect to the laundry in a dry state, and the drying is advanced only by circulation of the blown air by the blower fan 15. The air cooling step of lowering the temperature of the laundry is performed. In other words, excessive drying is not preferable in clothing and the like and waste of power consumption. When the dryness is detected and a predetermined dryness is detected, the heating by the heater 20 is stopped and the air-cooling process is performed only by blowing air. Control is implemented. This finishing drying control process (C) can perform the settings similar to the control procedure shown in FIG. 5A and FIG. 5B, and rotation control and time control of the reference drying control process (A).

As described above, the final drying control step causes the laundry to be wrinkled, while changing the axial direction of the rotating drum 5 in the laundry. Thus, in the first rotation control mode, the laundry is rotated in the first rotation control mode. After sticking to the inner circumferential surface, the horns are scattered to promote the change in the axial direction, and in the second rotation control mode, the laundry is rolled in the rotary drum 5 to agitate back and forth, left and right, and in the third rotation control mode. Therefore, it is set as the process which makes a cool air contact with laundry evenly and promotes air cooling.

In addition, as shown in FIG. 6D, the initial drying control step (B), the reference drying control step (A), and the final drying control step (C) are performed by setting the respective rotation control modes described above, whereby a more effective drying state is achieved. Is obtained.

In this embodiment, in addition to the rotation control of the rotary drum 5, a structure for promoting the movement of the laundry in the rotary drum 5 is provided. As shown in FIG. 1, the bag filter 30 which prevents the laundry from protruding into the water tank 3 from the plurality of air vents 39 formed on the bottom of the rotating drum 5 is formed with a spherical surface drawing a circular arc. The laundry which is stirred by the rotation of the rotary drum 5 is in contact with the bag filter 30 so as to be easily slipped to the front side. The bag filter 30 has a number of small holes formed densely so that the warm air blown from the air vent 39 can enter the rotating drum 5, and the surface facing the inside of the rotating drum 5 is slippery and smooth. It is finished with cotton. The bag filter 30 can be formed into a smooth surface that is slippery by selecting a metal or resin as the forming material. However, in order to improve slipping, the bag filter 30 has a small friction coefficient such as fluorine resin or polyacetal on its surface. It is preferable to form by or to coat these materials on the surface.

1, the corner embedding material 31 is arrange | positioned at the corner part so that the corner part from the inner peripheral surface of the rotating drum 5 to the inner bottom surface may become a curved surface or an inclined surface. By forming the inner circumferential surface of the corner embedding material 31 into an arcuate surface or an inclined surface and making it a smooth sliding surface, the laundry falling from the upper side by stirring by the rotation of the rotary drum 5 moves to the front side. It is easy to do this, and the state which becomes easy to move the laundry which slipped on the said bag filter 30 to the front side is obtained. In this way, the corner embedding material 31 is not disposed at the corner portion, but the rotating drum 5 may be formed so that the corner portion extending from the inner circumferential surface thereof to the bottom surface has a round shape or a C shape. Since the ring-shaped balancer 34 is arranged on the open end side and the bottom face side, the vibration accompanying the rotation can be suppressed, so that the corner embedding material 31 which can be easily formed by resin molding is arranged. It becomes preferable.

As described above, according to the present invention, in order to solve the difficulty of the drum-type laundry dryer, which is difficult to insert and remove the laundry, when the rotating drum is inclined to facilitate the loading and unloading of the laundry, the laundry is loaded in the rotating drum during the drying process. The problem that the nonuniformity tends to occur due to the deflection to a low position is caused by the setting of a plurality of rotation control modes in which a plurality of laundry behaviors accompanying the rotation of the rotating drum are obtained. Since the development behavior and the like are obtained and the laundry does not stay in a fixed place in the rotating drum, the occurrence of drying unevenness can be suppressed and the drum type laundry dryer can be efficiently dried.

1 is a cross-sectional view showing a main part configuration of a drum type laundry dryer according to an embodiment;

2 is a perspective view showing an appearance of a drum type laundry dryer according to an embodiment;

3 is a schematic diagram showing a configuration of a drying function of the drum type laundry dryer according to the embodiment;

4 is a plan view showing a configuration in a heating duct constituting a drying function;

5A and 5B are flowcharts showing the rotation control sequence of the rotating drum,

6A to 6D are process charts showing a combination of a plurality of drying control processes,

7 is a cross-sectional view showing a configuration of a drum type laundry dryer according to the prior art.

Explanation of symbols for the main parts of the drawings

1 drum washing machine 2 washing machine housing

3: water tank 4: drum drive motor

5: rotating drum 15: blowing fan

20: heater

Claims (9)

A rotating drum formed in a cylindrical shape having a bottom and driven to be rotated by the drum drive motor is disposed in the tank so that the rotary shaft thereof is inclined downward from the open end side toward the bottom surface side. Rotation is controlled to perform washing, rinsing, and dehydration processes, and at the same time, the air in the rotating drum is dehumidified, dehumidified, heated and blown again in the rotating drum to control the rotation of the drum drive motor and the drying process. Having the function to carry out, In the drying step, at least three types of predetermined rotation time and predetermined rotation stop time for each rotation direction are set for each of a plurality of rotation speeds in which the laundry accompanying the rotation of the rotation drum is different from each other. Characterized in that the reference drying control process for controlling the rotation of the drum drive motor is set at least so that the rotation control mode is repeated for a predetermined set time. Drum laundry dryer. The method of claim 1, In addition to the standard drying control process, an initial drying control process for controlling the rotation of the drum drive motor is set so that the plurality of rotation control modes in the initial stage of the drying process are repeated for a predetermined set time. Drum laundry dryer. The method of claim 1, In addition to the standard drying control step, the final drying control step of controlling the rotation of the drum drive motor so as to control the rotation of the drum drive motor so that the plurality of rotation control modes in the final step of the drying step is repeated for a predetermined set time. Is made up Drum laundry dryer. The method of claim 1, In addition to the standard drying control step, the initial drying control step of controlling the rotation of the drum drive motor so that the plurality of rotation control modes in the initial step of the drying step is repeated for a predetermined set time, and in the final step of the drying step A final drying control process is performed in which the rotation of the drum drive motor is controlled so that the plurality of rotation control modes are repeated for a predetermined set time and the heating of air circulation is set. Drum laundry dryer. The method according to any one of claims 1 to 4, Corresponding to the amount of laundry contained in the rotating drum, the rotational speed of each rotation control mode, a predetermined rotation time, a predetermined rotation stop time, and a repetition predetermined time are set. Drum laundry dryer. The method according to any one of claims 2 to 4, The transition from any drying control process to the next drying control process is the elapsed time control of the drying process. Drum laundry dryer. The method of claim 6, Corresponding to the amount of laundry contained in the rotating drum, the rotational speed of each rotation control mode, a predetermined rotation time, a predetermined rotation stop time, and a repetition predetermined time are set. Drum laundry dryer. The method according to any one of claims 2 to 4, The transition from any drying control process to the next drying control process is a dryness control based on the dryness detection of the laundry. Drum laundry dryer. The method of claim 8, Corresponding to the amount of laundry contained in the rotating drum, the rotational speed of each rotation control mode, a predetermined rotation time, a predetermined rotation stop time, and a repetition predetermined time are set. Drum laundry dryer.