KR100611829B1 - Drum type washing and drying machine - Google Patents

Abstract

Provided is a drum type laundry dryer capable of executing control suitable for laundry drying of underwear.

When the rotary drum 5 is inclined to facilitate the loading and unloading of the laundry, it is possible to prevent the laundry, each of which has a small volume and number, such as underwear from being deflected on the bottom side of the rotary drum 5. Arrange the driving course of the underwear to execute the control of washing and drying.

Description

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

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 according to the embodiment;

5 is a plan view illustrating a configuration example of an operation panel;

6 is a block diagram showing the configuration of a control device;

7A to 7C are flowcharts illustrating procedures of rotation control in a drying step;

8 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 8: door body

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. 8 shows the configuration of a drum type washing machine according to the prior art, and the rotary drum 61 is disposed in the water tank 63 in the washing machine housing 67 so that the rotation axis direction thereof is in the horizontal direction. The door 64 provided on the front side of the washing machine housing 67 is opened, and laundry is introduced into the rotating drum 61 from the laundry door 68 formed in the water tank 63 so as to face the door 64. Then, by rotating the rotary drum 61 by the drum drive motor 65, the laundry contained in the rotary drum 61 is lifted by the stirring projection 66 provided on the inner circumferential wall of the rotary drum 61, The laundry is sucked by lifting the lifted laundry from an appropriate height (see Patent Document 1).

By providing a drying function in the drum type washing machine which consists of the said structure, it can be comprised by the drum type washing dryer provided with the function to dry laundry, wet clothes, etc. after dehydration in addition to washing | cleaning. In other words, when the air is exhausted from the water tank 63, air containing moisture in the rotary drum 61 is discharged from the permeation holes 62 formed in the circumferential surface. Therefore, air containing moisture is passed through the dehumidifying means to dehumidify. After that, by heating means by heating means to form an air circulation path for blowing in the water tank 63, the laundry or clothes accommodated in the rotary drum 61 can be dried.

Since the drum type washing machine or the drum type laundry dryer arranges the rotary drum in the lateral direction, the laundry is put in and taken out from the front side, and the structure has been inadequate for the pain and narrow housing conditions associated with bending the waist. . In order to solve the problem of this drum type washing machine, the rotary shaft can be inclined so that the opening side of the rotating drum can be upward, so that laundry can be easily inserted and removed and can be configured as a drum type laundry dryer which can be arranged in a narrow space. (See Patent Document 2).

(Patent Document 1) Japanese Patent Application Laid-Open No. 9-215894 (Seconds 2 to 6, Fig. 1)

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

In the conventional drum-type laundry dryer, there is no driving course for washing or drying underwear which has the greatest use opportunity, and in general, miscellaneous laundry is mixed because the underwear is washed or dried in a driving course set as a standard course. In many cases, it is not easy to optimally wash or dry the underwear which is mainly cotton.

Further, when the drums are inclined from the horizontal direction to form a drum type laundry dryer, in the case of the underwear having a small volume and a large number, they tend to be biased toward the bottom of the drum, so that the rotation of the drum is Since it acts to collect laundry on the bottom side, there was a problem that washing and drying did not reach every corner of every laundry.

SUMMARY OF THE INVENTION An object of the present invention is to provide a driving course of underwear for performing control suitable for washing or drying of underwear, and at the same time, drum washing to perform drying control suitable for drying of underwear in a structure in which the rotating drum is inclined. It is to provide a dryer.

The first invention of the present invention for achieving the above object is arranged in a water tank so that the rotating shaft is formed in a cylindrical shape having a bottom and driven rotationally by the drum drive motor inclined downward from the open end side toward the bottom surface side, Controlling water supply, drainage, and rotation of the drum drive motor to perform washing, rinsing, and dehydration processes, exhausting and dehumidifying the air in the rotating drum, and heating and blowing air back into the rotating drum. A drum type laundry dryer having a function of controlling circulation and rotation of a drum drive motor, the drum type washing machine comprising: a setting input means for setting and inputting a driving course; An undergarment course is provided in which corresponding control is automatically executed.                         

According to the above structure, as the driving course of the drum type laundry dryer, there is provided a driving course of the underwear which is controlled to wash or dry the underwear having the most use opportunity, thereby improving the cleaning property of the underwear mainly made of cotton products, The washing and drying with good efficiency can be performed by the control that a small and large number of underwear does not deflect to the bottom side of a rotating drum.

In the washing step of the undergarment course in the above-described configuration, by controlling the water supply so that the water level in the water tank becomes higher than in the case of other laundry, the level of water that accumulates on the bottom side of the inclined rotating drum rises and the laundry deflects to the bottom side. Condition is alleviated.

In addition, in the second invention of the present application, a rotary drum which is formed in a cylindrical shape having a bottom and is rotationally driven by a drum drive motor is disposed in a water tank so that its axis of rotation is inclined downward from the opening end side to the bottom surface side, and the water supply to the water tank is , Washing, rinsing, and dewatering by controlling the drainage and rotation of the drum drive motor, and simultaneously circulating the air in the rotating drum to dehumidify, heat, and blow the air into the rotating drum. In a drum type laundry dryer having a function of controlling a rotation of a motor to perform a drying process, an underwear course for automatically controlling washing and drying of underwear is provided on setting input means for setting an operation course, The control means in the drying process of the undergarment course includes a plurality of control pieces having different behaviors of laundry accompanying rotation of the rotating drum. A reference drying control process in which a plurality of rotation control modes for setting a predetermined rotation time and a predetermined rotation stop time for each rotation direction and repeating this for a predetermined time is repeated at least for each of the entire speeds, is set at least. do.

According to the above configuration, in the case of the underwear having a relatively large number of articles and a large number of articles, if the rotating drum is inclined, the laundry is more likely to be deflected on the bottom side of the rotating drum than other laundry, so that the laundry is placed in a wide range in the rotating drum. By carrying out the rotation control which can spread and change the position, the laundry is not deflected to the bottom side of the rotating drum, and the warm air blown to the laundry reaches every corner, so that drying is efficient without drying irregularities. Become.

In addition to the above-mentioned reference drying control step, by setting an initial drying control step in which a plurality of rotation control modes in the initial stage of the drying step are repeated for a predetermined set time, stirring suitable for laundry having a high water content is achieved.

In addition to the standard drying control step, the plurality of rotation control modes in the final step of the drying step are repeated for a predetermined time, and at the same time, the finishing drying control step for controlling the heating of the air circulation is set, whereby drying has proceeded. Drying can be finished while lowering the temperature of the laundry.

In addition to the standard drying control process, an initial drying control process in which a plurality of rotation control modes in the initial stage of the drying process is repeated for a predetermined set time, and a plurality of rotation control modes in the final stage of the drying process By repeating a predetermined set time and setting a finishing drying control step for controlling heating of the air circulation, drying and agitation corresponding to the progress of drying are enabled.                         

In addition, since switching of an initial drying control process, a reference drying control process, and a finishing drying control process can estimate a dry state with the passage of a drying process, when a process is switched by the elapsed time control of a drying process, a control structure Can be simplified.

In addition, by switching the initial drying control step, the reference drying control step, and the final drying control step to control the drying degree based on the dryness detection of the laundry, the control corresponding to the progress of drying can be performed.

FIG. 1: shows the principal part structure of the drum type laundry dryer 1 which concerns on an Example, The water tank 3 is supported by the suspension structure which is not shown in the washing machine housing body 2, In this water tank 3, FIG. The rotating drum 5 formed in the cylindrical shape with a bottom is arrange | positioned. The water tank 3 and the rotating drum 5 have the opening end side as the front side of the washing machine housing body 2 and the bottom face side as the back 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 θ from the front side to the back side, and the rotating drum 5 is driven by the drum drive motor 4 mounted on the bottom of the water tank 3. Rotationally driven.

The water tank 3 is joined to the opening end of the water tank main body 3a formed in the bottomed cylindrical shape, and the water tank cover 3b which formed the laundry entrance 11 for putting a laundry into and out of the rotating drum 5, The door body 8 is provided in the inclined surface 2a formed in the front side of the washing machine housing body 2 facing the laundry entrance 11 and freely opening and closing. The water tank main body 3a and the water tank cover 3b may be integrally formed. By opening the door body 8, the laundry can be put in 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. Moreover, the bellows 13 formed by the flexible elastic body is arrange | positioned around the laundry entrance 11, When one end of the bellows 13 is pressed against the inner surface when the door 8 is closed, the rotating drum 5 Water splashing with rotation of the water is prevented from splashing out from within the water tank 3.

As shown in FIG. 2, the rotating drum 5 is inclined and the door 8 is provided in the washing machine housing 2 so as to face the opening. 8) is directed toward the face of the person standing in front of the drum-type laundry dryer (1), the lower the degree of bending bend less in opening the door (8) to insert and remove the laundry to the rotating drum (5) You can add and remove laundry. Therefore, it is not necessary to secure a space in front of the drum type dryer 1, and it is possible to install the drum type dryer 1 in a narrow space such as a toilet in which a conventional vertical type washing machine is installed. It can be comprised by the drum type laundry dryer 1 suitable also for an environment.

The position of the laundry opening 11 is formed so that its center position is eccentrically upward from the rotation shaft center R of the rotary drum 5, and is opposed to the laundry entrance 11 so that the center position is the washing machine entrance ( The door body 8 is provided substantially coinciding on the center line of 11). The diameter of the door body 8 has an optimal dimension due to the restriction of the installation place of the drum type laundry dryer 1, and becomes smaller than the opening diameter of the rotary drum 5. In addition, since the diameter of the laundry entrance 11 is also set corresponding to the diameter of the door 8, it is also smaller than the opening diameter of the rotary drum 5. As described above, when the laundry entrance 11 and the door body 8 are provided at a position where the center position thereof is biased upward from the rotation axis of the rotary drum 5, the door body 8 is opened to open the laundry entrance 11. When the inside of the rotating drum 5 is looked through, the portion 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 arises, etc., and it becomes difficult. In particular, as in the drum type laundry dryer 1 according to the present embodiment, the door body 8 is provided on the inclined surface 2a in which the rotary drum 5 is inclined and corresponding to the inclination angle of the rotary drum 5. The inside of the rotating drum 5 can be seen more widely.

The inclination angle [theta] for tilting the rotating drum 5 was determined by the inventors of the present invention in various investigations. By arranging 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 those with disabilities using wheelchairs, the operation of inserting 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 upward from the rotary shaft center R of the rotary drum 5 so that the laundry can be put in. Not only is it easy to remove, it also becomes easy to observe the operation state in each process of washing from the transparent door body 8.

However, when the opening diameter of the laundry entrance 11 is smaller than the opening diameter of the rotary drum 5, and the center position of the laundry entrance 11 is deflected to one side from the rotation shaft center R of the rotary drum 5, it shows in figure. As described above, the lower end of the water tank lid 3b overlaps the opening end of the rotary drum 5. When a part of the laundry protrudes from the opening end of the rotary drum 5 in this state, the part which protrudes with rotation of the rotary drum 5 is engaged between the rotary drum 5 and the water tank cover 3b. There is a case.

In order to prevent this laundry from engaging, the anti-engagement protrusion 14 which protrudes toward the inside of the rotating drum 5 is provided in the crescent-shape at the part which overlaps with the opening end of the rotating drum 5 of the water tank cover 3b. It is. That is, the laundry entrance 11 is formed in the position which deflected upwards from the center (center of the rotating drum 5), and the anti-engagement projection 14 centering on the deflection direction and the reverse direction of this laundry entrance 11 is carried out. ) Is provided in a crescent shape so as to project toward the inside of the rotating drum 5. The presence of the engagement preventing projections 14 prevents a portion of the laundry protruding from the inside of the rotating drum 5 from entering between the rotating drum 5 and the water tank lid 3b. Engagement of the laundry by eccentricity can be prevented.

When the door opening button 56 provided next to the door body 8 is pressed as shown in FIG. 2, since the door body 8 opens as shown by a virtual line, it rotates through the clothing entrance 11 (5) We put laundry in. When the door 8 is closed and the power-on button 58f of the operation panel 35 shown in FIG. 5 provided above the door 8 is pressed, the drum-type laundry dryer 1 is turned on. It is in a state where operation can be started. Each time the course select button 58i is pressed, " select " " auto " Each driving course of "underwear" can be selected sequentially, and the driving course selected by the course display part 59e is lightly displayed. When "Select" is selected in the course selection, the time of the washing process from the washing time setting button 58a, the time of the rinsing process from the rinsing time setting button 58b, and the time of the dehydrating process from the dehydration time setting button 58c. Although the time of a drying process can be set manually from the drying time setting button 58d, when setting a course other than "selection" in course selection, each setting time corresponding to the quantity of laundry put into the rotating drum 5 is selected. Is set automatically.

In the drum type laundry dryer 1 according to the present embodiment, when the "drying clothes" course is provided for the course selection, and the "underwear" is selected by the course selection button 58i, the underwear with the greatest use opportunity is obtained. It is configured to control the washing and drying suitable for washing the.

FIG. 6 shows a configuration of the control device 40 included in the drum type laundry dryer 1, and the control unit 41 configured by the microcomputer corresponds to the setting input buttons provided on the operation panel 35. FIG. The control command is output to the power switching unit 42 by using the control program stored in the storage unit 45 in response to the setting input such as the selection of the driving course input from the unit 43. The power switching unit 42 is configured using a switching element such as a silicon controlled rectifier (SCR), and the drum drive motor 4, the water supply valve 50, and the drain pump in response to a control command output from the control unit 41. 49, the blower fan 15, the heater 20, the water injection valve 53, etc. are controlled on / off. In addition, the control unit 41 receives detection outputs from the quantity detecting unit 46, the water level detecting unit 47, and the temperature detecting unit 54.

When the "underwear" course is selected and input from the operation panel 35 and the start button 58e is pressed to start operation, the controller 41 rotates the drum drive motor 4 to drive the rotary drum 5 in rotation. The amount detection unit 46 detects the amount of laundry put into the rotary drum 5 from the loaded state of the drum drive motor 4. The detection output by the quantity detection unit 46 is input to the control unit 41. When the control part 41 opens the water supply valve 50 and supplies the water to the water tank 3, the control part 41 opens the water supply valve 50 until the water level corresponding to the amount of the laundry input from the quantity detection unit 46 reaches the water supply. Continue. The water level indicating the water supply amount to the water tank 3 is detected by the water level detection unit 47, and the detection output is input to the control unit 41. When the "underwear" course is selected and input, the controller 41 controls the water supply valve 50 to supply water to a higher water level than in the case of other laundry. When the rotary drum 5 is inclined, the water supplied is deflected and stored on the bottom side, and a small number of laundry such as underwear tends to collect on the bottom side together with the water, but by setting the water level high, Deflection can be alleviated. When water is supplied to a predetermined level, the controller 41 controls each unit to sequentially perform washing, rinsing, and dehydration processes by washing time, rinsing time, and dehydration time automatically set corresponding to the amount of laundry.

The drum-type laundry dryer having the above-described configuration may optionally perform a drying process for drying the dehydrated laundry after the completion of the washing process, the rinsing process, the dehydration process, or the only drying process for drying the wet clothes. Can be selected.

3 and 4 show the configuration of the drying function of the drum type laundry dryer 1, 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 installed in the heating duct 19 is driven to rotate, the air in the water tank 3 is discharged from the exhaust port 21 into the dehumidification duct 16, so that the air containing moisture in the rotating drum 5 is contained. Is discharged into the dehumidification duct 16 from the permeation holes 12 formed in the circumferential surface into the water tank 3. In the dehumidification duct 16, the dehumidification means 38 provided with the heat exchanger 52 which is cooled by the water poured from the water injection nozzle 51 by opening the water injection valve 53 is arrange | positioned, and the exhaust port ( The air discharged into the dehumidification duct 16 from 21 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 down the inside of the water tank 3 and are discharged from the drain port 10 to the outside as shown by a 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 where the lower duct 23 of the heating duct 19 constructed by joining the lower duct 23 and the upper duct 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 the warm air of predetermined temperature, and the water tank (from the blower port 22) ( 3) It is blown into. The bottom surface of the rotary drum 5 is provided with a vent 39 formed with a plurality of openings on the circumference, and the warm air blown from the blower 22 into the water tank 3 is rotated from the vent 39. ) Is supplied. 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 again exhausted from the exhaust port 21 into the dehumidification duct 16. The circulation takes place. The laundry is dried by repeating air circulation accompanied by dehumidification and heating.

When the execution of the drying step is selected and input from the setting unit 43, the control unit 41 operates the blower fan 15 and the heater 20 to "on" and simultaneously opens a water injection valve 53. Is outputted to the power switching unit 42, the blowing fan 15 is driven to rotate to perform a drying operation for circulating the air in the water tank 3 in the drying air circulation path.

In the drum type laundry dryer 1 according to the present embodiment, since the rotary drum 5 is inclinedly arranged, in the case of laundry in which each volume is small and the number is large, such as underwear, the drum washing dryer 1 of the drum type laundry dryer 1 It is easy to collect in the lower part of the bottom side which becomes the lowest position, and when rotating the rotating drum 5, it becomes easy to collect the laundry on the bottom side, and it replaces each position of a laundry at the time of a drying process, and is every corner in every laundry Although a problem arises that the warm air cannot be reached until then, in the drum type laundry dryer 1 according to the present embodiment, the position of the laundry is changed by controlling the rotational drive of the rotary drum 5 by the drum drive motor 4. Or the position of the laundry is improved by the structure of the rotary drum 5.

First, as shown in FIG. 1, since the corner embedding material 31 is arrange | positioned at the corner part which reaches from the inner peripheral surface to the inner bottom surface of the rotating drum 5, and the corner part is formed in the inclined surface which is arcuate shape, The laundry falling from the side is made to move to the opening end side of the rotating drum 5 easily. In addition, 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 surface of the rotary drum 5 is formed in an approximately spherical surface drawing a gentle arc, thereby forming a rotary drum ( The laundry which is stirred by the rotation of 5) is in contact with the bag filter 30 so as to be slippery toward the front side. The bag filter 30 has a number of small holes formed densely in order to facilitate the entry of the warm air blown from the air vent 39 into the rotary drum 5, and the surface facing the inside of the rotary drum 5 is slippery. It is finished with smooth surface. The bag filter 30 can be formed into a smooth surface which is slippery by selection of a metal or resin as the forming material. However, in order to improve the slipperiness, the bag filter 30 is formed of a material having a small friction coefficient on the surface thereof, or a material thereof. The surface is coated.

Moreover, in order to prevent drying nonuniformity, the countermeasure which makes the warm air which a laundry spreads, a position is changed, and is blown blows to every corner by controlling rotation of the rotating drum 5 is taken. As shown in Figs. 7A to 7C, the rotation control of the rotary drum 5 in the drying step specifies the rotation control in which the rotation time in the forward and reverse rotation directions and the rotation stop time for the plurality of rotation speeds are set. It repeats over time, and this rotation control is performed in several steps corresponding to progress of drying.

7A to 7C show the procedure of the rotation control of the rotary drum 5 in the present embodiment, and the rotation by the rotation control mode set in each step of dividing the time required in the drying step into three steps Take control. First, in the initial stage of the drying process, the first rotation control mode is executed, and the first rotation speed is set (S1), and the rotation drum 5 is rotated in the forward direction at the first predetermined time (for example, 2 at this rotation speed). Second) rotate (S2), stop the rotation for a second predetermined time (e.g., 1 second) (S3), rotate the first predetermined time in the reverse direction (S4), and stop the rotation for the second predetermined time (S5) . This rotation control is repeated in the execution time (for example, 10 minutes) of the first rotation control mode (S6). For example, when the diameter of the rotary drum 5 is 500 ± 50 mm, when the rotary drum 5 is rotated at a first rotational speed of 90 r / min, the laundry adheres to the inner circumferential surface of the rotary drum 5, so this state Is repeated in the forward and reverse directions with a stop time, so that 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, so that the laundry is scattered all over the place. As a result, the position in the axial direction in the rotating drum 5 of the laundry is changed, so that all the laundry touches the warm air blown.

When the execution time of the first rotation control mode ends, the second rotation control mode is executed to set a second rotation speed (for example, 20 r / min when the diameter of the rotary drum 5 is 500 ± 50 mm) ( S7) After the rotation drum 5 is rotated in the forward direction for a third predetermined time (for example, 0.7 seconds) (S8) and the rotation is stopped for a fourth predetermined time (for example, 0.7 seconds) (S9), The third predetermined time is rotated in the reverse direction (S10), and the rotation is stopped for the fourth predetermined time (S11). This rotation control is repeated in the execution time (for example, 30 seconds) of the second rotation control mode (S12). Since the second rotational speed of the rotary drum 5 by this second rotation control mode is slow, the action of lifting the laundry in the rotational direction is not achieved, and the laundry remains below the rotational drum 5, and the rotational direction is By being inverted from side to side in a short time, the laundry exhibits the same behavior as rolling back and forth from below to below the rotating drum 5, and the axial direction and the left and right positions of the rotating drum 5 are replaced, so that the rotating drum 5 The laundry is heated to every corner by the warm air blown from below the bottom side.

In the initial stage of the drying process, the first rotation control mode and the second rotation control mode are repeated over a predetermined set time (eg, 60 minutes). After the set time for executing this initial stage has elapsed (S13), the procedure proceeds to the reference stage.

In the reference step of the drying step, a third rotation control mode is executed to set a third rotation speed (eg, 80 r / min when the diameter of the rotary drum 5 is 500 ± 50 mm) (S14). After rotating the rotary drum 5 at a rotational speed in the forward direction to the first reference predetermined time (for example, 2 seconds) (S15), and stopping the rotation for the second reference predetermined time (for example, 1 second) (S16), the reverse direction The first reference predetermined time is rotated (S17), and the second reference predetermined time is stopped (S18). This rotation control is repeated in the execution time (for example, 10 minutes) of the third rotation control mode (S19). In the reference step, since the degree of drying of the laundry is progressing and the laundry itself is lighter than the initial stage, the third rotational speed is 80 r / min, and the first rotational speed is 90 r so that wrinkles are less likely to form in the laundry. Even if it is set lower than / min, the laundry can be stuck to the inner peripheral surface of the rotary drum (5). When the rotary drum 5 is rotated at a third rotational speed of 80 r / min, the laundry adheres to the inner circumferential surface of the rotary drum 5, so that this state is repeated in the forward and reverse directions with a stop time, whereby Since the impact of the rotational direction is suddenly applied to the laundry stuck to the inner circumferential surface of the rotary drum 5, the laundry is scattered up and down, and as a result, the center of gravity in the rotating drum 5 of the laundry The position of the direction is reversed, and drying is accelerated because warm air reaches the corner of the laundry.

Next, the same second rotation control mode as described above is executed to set the second rotational speed (S20), and at this rotational speed, the rotary drum 5 is rotated in the forward direction for a third predetermined time (S21), and rotation is performed. After stopping the fourth predetermined time (S22), the third predetermined time is rotated in the reverse direction (S23), and the rotation is stopped for the fourth predetermined time (S24). This rotation control is repeated for an execution time (for example, 30 seconds) of the second rotation control (S25). Since the second rotational speed of the rotary drum 5 by this second rotation control mode is slow, the action of lifting the laundry in the rotational direction is not achieved, and the laundry is rotated from side to side in a short time so that the laundry is rotated. ), Which exhibits the same behavior as rolling from front to back and to the left and right, and the axial center direction of the rotary drum 5 and the positions of the left and right are replaced, and laundry is cornered by warm air blown from the lower side of the bottom side of the rotary drum 5. It warms up to the corners and promotes drying.

In the reference step of the drying process, the third rotation control mode and the second rotation control mode are repeated over a predetermined set time (for example, 70 minutes). After the set time for executing this initial step has elapsed (S26), the process shifts to the finishing step.

In the finishing step, the heating of the blowing air by the heater 20 is stopped and continued until the temperature of the laundry becomes a predetermined temperature by air cooling. Since the rotation control of the rotary drum 5 in this finishing step is the same as the control procedure in the reference step, the description thereof is omitted.

Although the rotation control of the rotating drum 5 in the drying process which concerns on the said Example is divided | segmented into three steps, the combination of a 1st rotation control mode and a 2nd rotation control mode, or 3rd time over the required time of a drying process. Either of the combination of the rotation control mode and the second rotation control mode may be executed, and may be divided into a reference step and a finishing step by blowing hot air or blowing cold air. Further, the transition to each step may be configured to be performed based on the detection of the dryness level rather than the time control.

As described above, according to the present invention, in the case of laundry such as underwear in which each volume is relatively small and the number increases, in the drum type laundry dryer in which the rotary drum is inclined to improve the convenience of use, the bottom of the rotary drum The laundry tends to be deflected to the side, but since the driving course of the underwear which controls the washing and drying to ease it is set, the washing and drying of the underwear with the most opportunity to use can be automatically controlled to the optimal state. It can be configured as a drum laundry dryer.

Claims (8)

A rotary drum which is formed in a cylindrical shape having a bottom and is rotated and driven by the drum drive motor is disposed in the water tank so that its axis of rotation is inclined downward from the open end side toward the bottom surface side. The drying process is performed by controlling the rotation, washing, rinsing, and dehydrating each other, and controlling the rotation of the air circulation and the drum drive motor which exhausts and dehumidifies the air in the rotating drum, heats it, and blows it back into the rotating drum. In the drum-type laundry dryer having a function of performing the An undergarment course in which control corresponding to washing of underwear and / or control corresponding to drying of the undergarment is provided on the setting input means for setting and inputting the driving course, Drum laundry dryer. The method of claim 1, In the washing process of the underwear course, water supply control is performed so that the water level in the tank becomes higher than that of other laundry. Drum laundry dryer. A rotary drum which is formed in a cylindrical shape having a bottom and is rotated and driven by the drum drive motor is disposed in the water tank so that its axis of rotation is inclined downward from the open end side toward the bottom surface side. The drying process is performed by controlling the rotation, washing, rinsing, and dehydrating each other, and controlling the rotation of the air circulation and the drum drive motor which exhausts and dehumidifies the air in the rotating drum, heats it, and blows it back into the rotating drum. In the drum-type laundry dryer having a function of performing the In the setting input means for setting the driving course, an underwear course in which control corresponding to washing and drying of the underwear is automatically provided is provided, and the drying step of the underwear course includes a plurality of rotations having different behaviors of laundry accompanying rotation of the rotating drum. A reference drying control process in which a plurality of rotation control modes in which a predetermined rotation time and a predetermined rotation stop time for each rotation direction are set for each of the speeds and repeats this for a predetermined time is repeated at least for a predetermined set time period, is characterized in that at least is set Drum laundry dryer. The method of claim 3, wherein The initial drying control process in which the plurality of rotation control modes in the initial stage of the drying process is repeated for a predetermined set time is further set. Drum laundry dryer. The method of claim 3, wherein The plurality of rotation control modes in the final stage of the drying step are repeated for a predetermined time, and a final drying control step for controlling heating of the air circulation is further established. Drum laundry dryer. The method of claim 3, wherein The initial drying control step in which the plurality of rotation control modes in the initial stage of the drying step is repeated for a predetermined set time, and the plurality of rotation control modes in the final step of the drying process are repeated for the predetermined set time, and the air circulation The final drying control process for controlling the heating of the Drum laundry dryer. The method according to any one of claims 3 to 6, 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 according to any one of claims 3 to 6, 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.

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