KR102627706B1 - Washing machine with drying apparatus and method to control thereof - Google Patents

Abstract

The disclosed embodiment provides a washing dryer that rotates the drum clockwise longer than counterclockwise when the drum is alternately rotated clockwise and counterclockwise during the drying cycle. A washing dryer according to one embodiment includes a tub; a drum rotatably provided inside the tub; a drying device provided on an upper part of the tub, which introduces air from the tub, heats the introduced air, and supplies it to the drum so that the laundry accommodated in the drum can be dried; and a control unit that rotates the drum alternately clockwise and counterclockwise upon entering the drying cycle, rotating the drum clockwise for a first time and counterclockwise for a second time shorter than the first time. Includes ;

Description

Washing dryer and its control method {WASHING MACHINE WITH DRYING APPARATUS AND METHOD TO CONTROL THEREOF}

The present invention relates to a washing dryer equipped with a drying device and a control method thereof.

A washing machine and dryer can provide a washing function and a drying function. In general, during a drying cycle, a washing dryer rotates a drum containing a wet object and allows high-temperature dry air to pass through the inside of the drum to dry the object in the drum.

Recently, research is underway to improve the energy efficiency of dryers while providing optimal drying services to users.

The disclosed embodiment provides a washing dryer that rotates the drum clockwise longer than counterclockwise when the drum is alternately rotated clockwise and counterclockwise during the drying cycle.

A washing dryer according to one embodiment includes a tub; a drum rotatably provided inside the tub; a drying device provided on an upper part of the tub, which introduces air from the tub, heats the introduced air, and supplies it to the drum so that the laundry accommodated in the drum can be dried; and a control unit that rotates the drum alternately clockwise and counterclockwise upon entering the drying cycle, rotating the drum clockwise for a first time and counterclockwise for a second time shorter than the first time. Includes ;

Additionally, the drying device may be provided at the upper right of the tub and may include an inlet for introducing air from the tub and an outlet for supplying heated air to the drum.

The control unit may rotate the drum clockwise for a first time and counterclockwise for a second time shorter than the first time to prevent interference between the inlet and the laundry contained in the drum.

Additionally, the control unit may reduce the difference between the first time and the second time if the weight of the laundry is less than the minimum value of the predetermined reference range.

Additionally, the controller may decrease the first time or increase the second time so that the difference between the first time and the second time is reduced.

Additionally, if the weight of the laundry is greater than the maximum value of the predetermined reference range, the control unit may increase the difference between the first time and the second time.

Additionally, the controller may increase the first time or decrease the second time so that the difference between the first time and the second time increases.

In addition, when the drying cycle is completed, the control unit rotates the drum alternately clockwise and counterclockwise, and can control the rotation of the drum so that the clockwise and counterclockwise rotation times are the same.

Additionally, when the drying cycle is terminated, the controller may alternately rotate the drum clockwise and counterclockwise for a third time that is shorter than the second time, respectively.

A control method of a washing dryer according to an embodiment includes: when entering a drying cycle, air introduced from the tub is heated in a drying device and supplied to the drum; While the drying cycle is in progress, the drum is alternately rotated clockwise for a first time and counterclockwise for a second time shorter than the first time.

In addition, while the drying cycle is in progress, rotating the drum clockwise for a first time and counterclockwise for a second time shorter than the first time alternately causes the drum to be connected to the inlet of the drying device and the drum. It may include rotating the drum clockwise for a first time and counterclockwise for a second time shorter than the first time to prevent interference between stored laundry.

In addition, while the drying cycle is in progress, rotating the drum clockwise for a first time and counterclockwise for a second time shorter than the first time alternately causes the weight of the laundry stored in the drum to increase. determine whether it is included in a predetermined standard range; If the weight of the laundry is less than the minimum value of the reference range, reducing the difference between the first time and the second time may include.

In addition, if the weight of the laundry is greater than the maximum value of the reference range, increasing the difference between the first time and the second time may be further included.

In addition, when the drying cycle is completed, the drum is alternately rotated clockwise and counterclockwise, and the drum is rotated so that the clockwise and counterclockwise rotation times are the same. .

In addition, when the drying cycle is completed, the drum may be alternately rotated clockwise and counterclockwise for a third time less than the second time, respectively.

The washing dryer according to the disclosed embodiment can improve the dryness of laundry by reducing the frequency of interference between the inlet of the drying device and the laundry.

Additionally, the washing dryer according to the disclosed embodiment can shorten the drying time at the same drying temperature.

1 is a diagram showing a cross section of a washing dryer according to an embodiment.
Figure 2 is a diagram showing the configuration of a washing dryer according to an embodiment.
Figure 3 is an exploded view of a washer and dryer according to one embodiment.
Figure 4 is a diagram illustrating air flow for drying in a washing dryer according to an embodiment.
Figure 5 is a diagram showing a suction member according to one embodiment.
Figure 6 is an exploded view of a suction member according to one embodiment.
Figure 7 is a view showing a suction member according to one embodiment from another angle.
Figure 8 is a cross-sectional view of a suction member according to one embodiment.
Figure 9 is a control configuration diagram of a washing dryer according to an embodiment.
10 to 12 are flowcharts showing a control method of a washing dryer according to an embodiment.

This specification clarifies the scope of rights of the present invention, explains the principles of the present invention, and discloses embodiments so that those skilled in the art can practice the present invention. The disclosed embodiments may be implemented in various forms.

Like reference numerals refer to like elements throughout the specification. This specification does not describe all elements of the embodiments, and general content or overlapping content between the embodiments in the technical field to which the present invention pertains is omitted. The term 'part' (portion) used in the specification may be implemented as software or hardware, and depending on the embodiment, a plurality of 'portions' may be implemented as a single element (unit, element) or as a single 'portion'. It is also possible for 'boo' to contain multiple elements.

Additionally, when a part "includes" a certain component, this means that it may further include other components rather than excluding other components, unless specifically stated to the contrary.

Singular expressions include plural expressions unless the context clearly makes an exception.

The identification code for each step is used for convenience of explanation. The identification code does not explain the order of each step, and each step may be performed differently from the specified order unless a specific order is clearly stated in the context. there is.

Hereinafter, the operating principle and embodiments of the present invention will be described with reference to the attached drawings. FIG. 1 is a cross-sectional view of a washing and dryer according to an embodiment, and FIG. 2 is a drawing showing the configuration of a washing and drying machine according to an embodiment. FIG. 3 is an exploded view showing a washer and dryer according to an embodiment, and FIG. 4 is a view showing air flow for drying in a washer and dryer according to an embodiment.

1 to 3, the washing dryer 1 includes a cabinet 10 forming the exterior, a tub 20 installed inside the cabinet 10, and a rotatable unit inside the tub 20. It is provided with an installed drum 30 and a motor 7 that drives the drum 30.

Cabinet 10 includes frames 10a, 10b, 10c, and 10d. The frames (10a, 10b, 10c, and 10d) are the upper frame (10a) forming the upper surface of the cabinet, the front frame (10b) and rear frame (10c), and the front frame (10b) forming the front and rear of the cabinet (10), respectively. It includes a lower frame (10d) that connects the and rear frame (10c) and forms the lower surface (bottom surface) of the cabinet (10). The lower frame 10d may include a bottom hole 10e that allows air to flow in from the outside of the washing machine 1.

The front frame 10b of the cabinet 10 is provided with an inlet 2a so that laundry can be put into or taken out of the drum 30. The input port 2a is opened and closed by the door 2 installed on the front frame 10b of the cabinet 10.

A spring 17 may be provided between the cabinet 10 and the tub 20 to support the tub 20 from the upper side. The elastic force of the spring 17 can alleviate vibration and noise generated by the flow of the tub 20. Additionally, the tub 20 is supported by a damper 18. The damper 18 connects the inner bottom surface of the cabinet 10 and the outer surface of the tub 20. Additionally, the damper 18 may be provided on the upper and left and right sides of the cabinet 10 in addition to the inner bottom surface to support the tub 20. The damper 18, like the spring 17, can also alleviate vibration and noise generated by the flow of the tub 20.

The tub 20 may include a first tub 21 located at the front of the inside of the cabinet 10, and a second tub 22 coupled to the rear portion of the first tub 21. The first tub 21 may include a cylindrical portion and a front plate located on the front of the cylindrical portion. The second tub 22 may include a cylindrical portion provided in the circumferential direction and a rear plate located at the rear of the cylindrical portion. The cylindrical portion of the first tub 21 and the cylindrical portion of the second tub 22 are combined to form the tub 20.

Referring to FIGS. 1 and 2 , a water supply pipe 13 may be provided at the top of the tub 20 to supply water (washing water or rinsing water) to the tub 20 . One side of the water supply pipe 13 is connected to an external water supply source (not shown), and the other side of the water supply pipe 13 is connected to the detergent supply device 12.

The water supply pipe 13 may include a sub water supply pipe 15 connected to the suction member 50, which will be described later. The sub water supply pipe 15 may be branched from the water supply pipe 13 and connected to the suction member 50.

The detergent supply device 12 may be connected to the tub 20 through a connection water supply pipe 16. This is because the detergent supply device 12 is located at the front inside the cabinet 10. Meanwhile, the connection water supply pipe 16 may be provided in a U-trap shape to prevent wet air generated during the drying process from leaking to the outside.

The water supplied through the water supply pipe 13 is supplied to the inside of the tub 20 through the connected water supply pipe 16 along with detergent via the detergent supply device 12. A water supply valve 14 may be installed in the water supply pipe 13 to control the supply of water.

Referring to FIG. 1, the drum 30 may include a plurality of through holes 27 provided for the distribution of washing water. The drum 30 may include a plurality of lifters 26 provided on the inner peripheral surface so that laundry can rise and fall when rotated.

In addition, as shown in FIG. 1, a drive shaft 11 may be provided between the drum 30 and the motor 7 to transmit the driving force of the motor 7 to the drum 30. One end of the drive shaft 11 is connected to the rear plate of the drum 30, and the other end of the drive shaft 11 extends to the outside of the rear wall of the tub 20. When the motor 7 is driven, the drum 30 connected to the drive shaft 11 rotates around the drive shaft 11. The motor 7 may be implemented as a universal motor consisting of a field coil and an armature, or a BLDC motor (Brushless Direct Motor) consisting of a permanent magnet and an electric magnet. It is not limited.

A bearing housing 8 may be provided on the rear plate of the second tub 22 to rotatably support the drive shaft 11. The bearing housing 8 may be made of aluminum alloy and may be inserted into the rear wall of the second tub 22 when the second tub 22 is injection molded. Bearings 9 may be provided between the bearing housing 8 and the drive shaft 11 so that the drive shaft 11 can rotate smoothly.

Referring to FIGS. 1 and 2 , a drain pump 4 may be provided at the lower portion of the tub 20 to discharge water inside the tub 20 to the outside of the cabinet 10 . A connecting hose (3) connecting the tub (20) and the drain pump (4) so that the water inside the tub (20) can flow into the drain pump (4), and a cabinet for water pumped by the drain pump (4). A drain hose (5) leading to the outside of (10) may be provided.

In addition, as shown in FIG. 1, a water level detection sensor 96 may be provided on the lower rear side of the tub 20 to detect the water level of condensate generated during the drying process. The washing dryer 1 according to the disclosed embodiment discharges condensate when the water level detected by the water level sensor 96 is higher than a predetermined reference value, which will be described later.

A drying device 31 is installed in the tub 20 to dry the high-temperature and humid air inside the tub 20 and then supply it back to the inside of the tub 20. The drying device 31 serves to remove moisture from the air condensed inside the tub 20.

According to the disclosed embodiment, as shown in FIG. 3, the drying device 31 includes a suction member 50 provided to suction wet air generated during the drying stroke, and heating the air sucked from the suction member 50. It includes a drying duct 40 that supplies to the drum 30. The drying device 31 heats and circulates the air in the tub 20 so that the laundry in the drum 30 can be dried. Accordingly, air circulates and moves inside the tub 20 and the drying duct 40. The drying duct 40 and the suction member 50 will be described in more detail.

Referring to FIG. 3, the drying duct 40 may include an upper plate 41 and a lower plate 42. Additionally, the drying duct 40 may include a head 43 provided above the blowing fan 44. The blowing fan 44 forms a circular flow of air so that the air in the tub 20 flows into the drying duct 40 and is discharged back into the interior of the tub 20.

A suction member 50 on which the blowing fan 44 is seated may be provided below the drying duct 40. The suction member 50 will be described later with reference to FIGS. 5 to 8.

One side of the drying duct 40 is coupled to the front panel 21a extending from one side of the first tub 21. In addition, the other side of the drying duct 40 is coupled to the suction member 50, and the suction member 50 is coupled to the connecting member 71 that mediates connection with the second tub 22. The connecting member is coupled to the hole 25 of the second tub. Humid air generated during the drying cycle is introduced into the drying device 31 through the hole 25 of the tub by the suction force generated by the suction member 50, passes through the drying duct 40, and passes through the front panel 21a. It is supplied inside the drum (30).

As shown in FIG. 4, during the drying process, when the drum 30 rotates and the blowing fan 44 is driven, the air in the tub 20 flows into the drying duct 40 through the hole 25 of the tub. . The air heated in the drying duct 40 flows back into the tub 20 through the front panel 21a and dries the laundry. As the above-mentioned process is repeated, the air can circulate and move between the drying duct 40 and the tub 20. Hereinafter, the opening of the connecting member coupled with the hole of the second tub is referred to as the inlet through which air flows, and the opening of the drying duct 40 coupled with the front panel 21a of the first tub is referred to as the discharge port through which air is discharged. do.

Referring to FIG. 3, the drying duct 40 may include a heater 45 provided to heat the air therein. Additionally, the drying duct 40 may include a bracket 46 provided to couple the heater 45 to the drying duct 40.

As shown in FIG. 3, the heater 45 may be bent several times and provided in a zigzag shape. The heater 45 includes a terminal part (not shown) to which a current-carrying wire is connected, a sealing member (not shown) that is mounted at a predetermined distance apart from the terminal part to prevent air leakage, and a heating part (not shown) extending from the terminal part. (not shown) may be included.

The bracket 46 is coupled to the outside of the upper plate 41 and the lower plate 42 to fix the heater 45 within the drying duct 40. The bracket 46 may be made of an insulating and highly heat-resistant material to prevent heating by heat generated from the heater 45. According to the disclosed embodiment, the bracket 45 may be implemented with polyphenylene sulfide (PPS), polyethylene terephtalate (PET), etc.

In addition, the connecting member 71 of the drying duct 40 may be provided with a filter 60 to filter out lint, such as dust or lint, generated as laundry is dried during the drying process.

Meanwhile, the suction member 50 may include a front member 53 located at the front and a rear member 52 located at the rear. FIG. 5 is a view showing the suction member 50 according to an embodiment, and FIG. 6 is an exploded view showing the suction member 50 according to an embodiment. FIG. 7 is a view showing the suction member 50 according to an embodiment from a different angle, and FIG. 8 is a view showing a cross section of the suction member 50 according to an embodiment.

The front member 53 may be provided with a seating portion 53a on which the blowing fan 44 is seated. The seating portion 53a is in communication with the tub 20, and wet air can move to the seating portion 53a due to the driving of the blowing fan 44. At least a portion of the front member 53 may be provided with a slit 54 for sucking air from the outside of the tub 20. A front member communication port 51 may be formed on the lower side of the front member 53 to communicate with the tub 20.

The rear member 52 may be provided with an intake port 52a for sucking air between the tub 20 and the cabinet 10. The intake port 52a may be provided on a protrusion 52i provided to protrude upward from the rear member 52. This is to prevent foam or washing water from overflowing to the outside through the intake port 52a. Additionally, a fixing part may be provided on at least a portion of the rear member 52 to fix the suction member 50 to the cabinet 10. The fixing part is a first fixing part (52g, 10g) that fixes the suction member 50 to the cabinet 10 by combining the hook (52g) provided on the rear of the rear member 52 with the hook groove (10g) of the cabinet 10. ) may include. Additionally, the fixing part may include a second fixing part 52h for fixing the cabinet 10 and the suction member 50 using a separate fastening member (not shown).

The front member 53 and the rear member 52 are fastened by at least one fastening part. The fastening portion may include first fastening portions 52b and 53b that fasten the front member 53 and the rear member 52 through a hook 52b. In addition, it may include second fastening parts 52f and 53f that fasten the front member 53 and the rear member 52 using separate fastening members (not shown). The second fastening portions 52f and 53f may include a front member fastening hole 53f provided in the front member 53 and a rear member fastening hole 52f provided in the rear member 52. The shape of the rear member fastening hole (52f) is provided to correspond to the shape of the front member fastening hole (53f). That is, a fastening member (not shown) is inserted into the front member fastening hole (53f) through the rear member fastening hole (52f) to couple the front member (53) and the rear member (52). A flow path may be provided inside the front member 53 and the rear member 52 for movement of air sucked through the intake port 52a. The flow path provided inside the rear member 52 is defined as the first flow path 52c, and the flow path provided inside the front member 53 is defined as the second flow path 53c. The front member 53 and the rear member 52 may include inclined portions 52d and 53d whose bottom surfaces are inclined. The inclined portions 52d and 53d are provided inclined in the direction of the blowing fan 44 to guide the movement of air. The inclined portions 52d and 53d may be inclined at an angle of 1 to 20 degrees with respect to the horizontal plane. Referring to FIG. 8, the angle α at which the inclined portion 53d provided on the front member 53 is inclined with respect to the horizontal plane is 15ㅀ, and the inclined portion 52d provided on the rear member 52 is inclined relative to the horizontal plane. The inclined angle (β) is 1ㅀ, but is not limited thereto. The above-mentioned inclined portions 52d and 53d can prevent the washing water inside the tub 20 from flowing back and overflowing from the tub 20.

As described above, the suction member 50 includes a flow path through which air can move and can suck air between the cabinet 10 and the tub 20. The drying device 31 according to the disclosed embodiment can dry laundry using such air, thereby shortening the drying time.

When the blower fan 44 is driven during the drying process, high temperature and high humidity air in the tub 20 flows in through the inlet, and low temperature and low humidity inside the washing dryer 1 through the suction port 52a of the suction member 50. One air can be sucked in at the same time, causing air condensation in the drying duct 40. Additionally, after the heated air supplied to the drum 30 absorbs moisture from the laundry accommodated in the drum 30, condensation may occur on the inner surface of the tub 20. Then, after the wet air is introduced into the drying device 31, condensed water is supplied from the sub drain pipe, so that the wet air can be condensed. Condensed water generated through the above-described condensation process is stored in the lower part of the tub 20. Drainage of condensed water stored in the lower part of the tub 20 will be described later.

As described above, the drying device 31 including a drying duct is provided in the upper right portion of the tub 20. That is, the drying device 31 is provided at approximately 1 o'clock, not 12 o'clock, when the washer and dryer 1 is viewed from the front. Since the drying device 31 is slightly tilted toward 1 o'clock, interference between the laundry and the inlet of the drying device 31 may occur depending on the rotation direction of the drum 30. In other words, laundry may block the inlet, reducing the efficiency of air circulation for drying laundry, thereby reducing drying efficiency. The washing dryer 1 according to the disclosed embodiment can improve drying efficiency and shorten drying time by reducing the frequency of interference between the laundry and the inlet. Hereinafter, with reference to FIGS. 9 to 12, the washing dryer 1 according to the disclosed embodiment, which can reduce the frequency of interference between the inlet and laundry, will be described in detail.

Figure 9 is a control configuration diagram of a washer and dryer 1 according to an embodiment. Referring to Figure 9, the washer and dryer 1 according to the disclosed embodiment includes an input unit 100, a control unit 110, and a memory 120. and a display unit 140.

The input unit 100 is provided to receive commands for performing the washing process, rinsing process, dehydration process, and drying process of the washing and dryer 1.

In addition, the input unit 100 uses various buttons placed on the control panel to receive operation information such as the drying course selected by the user (e.g., Normal, Towels, Perm, Delicates, etc.), drying time, and operation commands. It can be included.

Additionally, the input unit 100 may include a jog dial for selecting a drying state (eg, semi-dry, fully dry, etc.) in addition to a button.

The input unit 100 is not limited to the examples described above and may include various devices that allow commands to be input through manipulation such as pressing, contact, pressure, or rotation.

The display unit 140 may display the operating state of the washing and dryer 1 according to a display control signal from the control unit 110. Additionally, the display unit 140 is provided to receive a touch gesture, so that it can receive a command according to the user's touch gesture and display a corresponding operating state.

Additionally, the display unit 140 is provided to provide an LCD UI capable of displaying text, and can display the operating status of the washer and dryer 1 in text. Additionally, the display unit 140 may provide an LED UI designed to enable the user to recognize an abnormal state of the washer and dryer 1 using lighting or blinking and differences in lighting duration.

The memory 120 includes various control data for controlling the operation of the washer and dryer 1, usage information including the number of times the washer and dryer 1 performed a specific operation, model information of the washer and dryer 1, and laundry dryer 1. When the dryer 1 malfunctions, fault information including the cause of the malfunction or the location of the malfunction can be stored. Additionally, in relation to the drying cycle, data on the rotation time according to the rotation direction of the drum 30 can be stored.

The control unit 110 may include a microprocessor that controls the overall operation of the washer and dryer 1, including the washing process, rinsing process, dehydration process, and drying process, according to operation information input from the input unit 100.

The control unit 110 can set the washing and rinsing quantity, spin-drying RPM, motor operation rate (motor on-off time), washing and spin-drying time, etc. according to the weight (load) of laundry in the selected washing course.

When the drying cycle is performed, the control unit 110 of the washing dryer 1 according to the disclosed embodiment controls the drying device 31 so that heated air is supplied to the laundry accommodated in the drum 30, and the drum 30 ) The drum 30 is rotated by driving the motor 7 so that the laundry contained in the drum can flow. When rotating the drum 30, the control unit 110 alternately rotates it clockwise and counterclockwise. The clockwise and counterclockwise rotation directions of the drum 30 described above are defined as the clockwise and counterclockwise directions when the drum 30 is viewed from the front of the washing and dryer 1.

As described above, since the inlet of the drying device 31 is provided at a position corresponding to approximately 1 o'clock, when the drum 30 rotates counterclockwise, interference between the laundry and the inlet may occur. That is, when the drum 30 rotates counterclockwise, the laundry rotates counterclockwise with the drum 30 and falls at approximately 12 o'clock, so while the drum 30 rotates counterclockwise, the laundry falls at approximately 12 o'clock. Interference between laundry and the inlet continuously occurs.

The control unit 110 of the washing dryer 1 according to the disclosed embodiment rotates the drum 30 alternately clockwise and counterclockwise while the drying cycle is in progress, and the clockwise rotation time (hereinafter referred to as the first The rotation of the drum 30 is controlled so that the counterclockwise rotation time (hereinafter referred to as the second time) is longer than the counterclockwise rotation time (hereinafter referred to as the second time).

For example, when the drying cycle progresses, the control unit 110 may repeat the process of rotating the drum 30 clockwise for 600 seconds and then counterclockwise for 60 seconds. The example rotation time of the drum 30 is only an example, and a case where the first time, which is a clockwise rotation time, is longer than the second time, which is a counterclockwise rotation time, may be included in the disclosed embodiment.

As described above, when the drum 30 rotates clockwise longer than counterclockwise, the flow of laundry and the effect of preventing laundry tangles are maintained, and the frequency of interference between the inlet and the laundry is reduced, thereby improving drying efficiency. It can be.

Additionally, the control unit 110 of the washing and drying machine 1 according to the disclosed embodiment may adjust the difference between the above-described first time and the second time according to the weight of laundry. If the weight of the laundry is within a predetermined reference range, the control unit 110 rotates the drum 30 for a predetermined first time and a second time. For example, the first time may be 600 seconds and the second time may be 60 seconds.

If the weight of the laundry is not included in the above-mentioned reference range and is less than the minimum value of the reference range, the control unit 110 may reduce the interval between the first time and the second time. If the weight of the laundry is less than the minimum value of the standard range, the amount of laundry can be considered smaller than if the weight of the laundry is included in the standard range or is larger than the maximum value of the standard range, and therefore the frequency of interference between laundry and the inlet may decrease. there is.

Therefore, even if the difference between the first time and the second time is reduced by increasing the second time, which is the counterclockwise rotation time, and decreasing the first time, which is the clockwise rotation time, by the amount of the increase, according to the disclosed embodiment The aforementioned effects can be achieved. As another example, the controller 110 may leave the first time as is and increase only the second time.

If the weight of the laundry is not included in the above-mentioned reference range and is greater than the maximum value of the reference range, the control unit 110 may increase the interval between the first time and the second time. If the weight of the laundry is greater than the maximum value of the standard range, the amount of laundry can be considered larger than if the weight of the laundry is included in the standard range or smaller than the minimum value of the standard range, and therefore the frequency of interference between the laundry and the inlet may increase. there is.

Therefore, in order to achieve the above-described effect according to the disclosed embodiment, it is desirable to reduce the second time, which is the counterclockwise rotation time, and increase the first time, which is the clockwise rotation time, by the amount of the decrease. As another example, the controller 110 may leave the first time as is and decrease only the second time.

The memory 120 may store in advance data on the rotation time according to each rotation direction of the drum 30 when the drying cycle is performed. Additionally, as described above, data on the rotation time of each rotation direction of the drum 30 according to the weight of laundry may be stored in advance.

Meanwhile, the washing dryer 1 according to the disclosed embodiment condenses and removes moisture contained in humid air generated during the drying process, heats the air from which the moisture has been removed, and supplies it to the drum 30, thereby drying laundry. In order to condense moisture in humid air, the laundry dryer 1 according to the disclosed embodiment supplies condensed water to the drying device 31 to remove moisture contained in humid air. The supply and drainage of condensate in the washing and dryer 1 according to the disclosed embodiment will be described in detail below.

When the drying cycle begins, the control unit 110 drives the motor 7 to rotate the drum 30, thereby rotating the laundry inside the drum 30. Additionally, the control unit 110 drives the blowing fan 44 to allow air to flow inside the drum 30.

The control unit 110 also drives the heater 45 to heat the air introduced into the drying device 31 by driving the blowing fan 44. Air heated by the heater 45 flows into the drum 30 through the drying duct 40. The hot air flowing into the drum 30 repeatedly rises and falls inside the drum 30, taking moisture away from the rotating laundry and drying the laundry.

When the blower fan 44 is driven during the drying process, high temperature and high humidity air in the tub 20 flows into the drying duct 40 through the inlet, and low temperature and low humidity air inside the washing dryer 1 is also blown through the suction member ( It flows into the drying duct 40 through the suction port 52a of 50). Therefore, in the drying duct 40, high-temperature, high-humidity air and low-temperature, low-humidity air are mixed and condensation occurs. The condensed air passes through the heater 45 and the drum 30, takes moisture away from the laundry, and then condenses inside the tub 20.

In addition, the control unit 110 causes the condensed water to be supplied to the drying device 31 when the air temperature inside the drying duct 40 reaches a predetermined set temperature, thereby supplying the wet air and the wet air introduced through the inlet of the drying device 31. Moisture is condensed through heat exchange of condensate. The control unit 110 may operate the water supply valve 14 to supply condensed water to the drying device 31 through the sub water supply pipe 15. A temperature sensor capable of detecting the temperature of the air may be provided inside the drying duct 40.

As described above, when moisture in the humid air condenses due to the supply of condensate, etc., the condensate water is stored in the lower part of the tub 20. The washing dryer 1 according to the disclosed embodiment does not drain the condensate immediately when it accumulates in the lower part of the tub 20, but drains the water when the water level of the condensate reaches a predetermined level or when a predetermined time elapses after supplying the condensate. do.

There is a difference between the temperature of the condensate stored in the tub 20 and the temperature inside the drum 30, and this temperature difference can improve the condensation efficiency of wet air. Therefore, the washing dryer 1 according to the disclosed embodiment does not immediately perform drainage along with the condensate water supply, but stores the condensate until the condensate reaches a predetermined level or a predetermined time after the condensate water supply, thereby improving condensation efficiency. improves

The control unit 110 operates the drain pump 4 when the condensate water reaches a predetermined level as a result of detection by the water level sensor 96 provided at the bottom of the tub 20, or when a predetermined time has elapsed after supplying the condensate water. Drain the condensate. The control unit 110 stops the operation of the drainage pump 4 when a predetermined driving time of the drainage pump 4 has elapsed. The water level or time for draining condensate may be predetermined at a level at which condensate does not flow into the drum 30 and stored in the memory 120. During the drying process, the control unit 110 repeatedly performs the above-described condensate water supply and drainage processes.

As described above, the washing dryer 1 according to the disclosed embodiment controls the clockwise rotation time of the drum 30 to be longer than the counterclockwise rotation time, and drains the condensate in consideration of the level of the condensate or the time elapsed after supplying the condensate. By performing this, the drying time can be shortened and the drying efficiency can be further improved.

10 to 12 are flowcharts showing a control method of the washing and drying machine 1 according to an embodiment. With reference to FIG. 10 , a method for controlling the rotation of the drum 30 during the drying stroke will be described, and with reference to FIGS. 11 and 12 , a method for controlling the drainage of condensate during the drying stroke will be described. Referring to FIG. 10, when the drying cycle progresses (800), the control unit 110 of the washing and dryer 1 according to the disclosed embodiment rotates the drum 30 clockwise for a first time (810), and When 1 hour has elapsed, the drum 30 is rotated counterclockwise for a second time shorter than the first time (820).

When the drying cycle is performed, the control unit 110 of the washing dryer 1 according to the disclosed embodiment controls the drying device 31 so that heated air is supplied to the laundry accommodated in the drum 30, and the drum 30 ) The drum 30 is rotated by driving the motor 7 so that the laundry contained in the drum can flow. When rotating the drum 30, the control unit 110 alternately rotates it clockwise and counterclockwise.

The control unit 110 of the washing dryer 1 according to the disclosed embodiment rotates the drum 30 alternately clockwise and counterclockwise while the drying cycle is in progress, and the first time, which is the clockwise rotation time, is The rotation of the drum 30 is controlled to be longer than the second time, which is the counterclockwise rotation time.

For example, when the drying cycle progresses, the control unit 110 may repeat the process of rotating the drum 30 clockwise for 600 seconds and then counterclockwise for 60 seconds. As described above, when the drum 30 rotates clockwise longer than counterclockwise, the flow of laundry and the effect of preventing laundry tangles are maintained, and the frequency of interference between the inlet and the laundry is reduced, thereby improving drying efficiency. It can be.

When the drying process is completed (830), the control unit 110 proceeds with the cooling process (840). When the cooling cycle progresses, the control unit 110 rotates the drum 30 clockwise for a third time (850), and when the third time elapses, it rotates the drum 30 counterclockwise for a third time (850). 860). The control unit 110 ends the cooling cycle when the cooling cycle time elapses (870).

When the drying cycle is completed, the controller 110 stops the heater 45 and drives the motor 7 and the blowing fan 44 to perform a cooling cycle. The cooling process is a process in which the heater 45 is stopped and the blower fan 44 is periodically turned on/off. This is to prevent the user from being exposed to high-temperature air excessively emitted from the door 2 when the door 2 is opened after the drying cycle of the washer and dryer 1 has ended.

The control unit 110 alternately rotates the drum 30 clockwise and counterclockwise while the cooling process is in progress. Unlike during the drying cycle, the control unit 110 controls the motor 7 so that the clockwise rotation time and the counterclockwise rotation time are the same. That is, while the cooling cycle is in progress, the control unit 110 rotates the drum 30 clockwise for a third time shorter than the second time, for example, 10 seconds, and rotates the drum 30 counterclockwise after 10 seconds. The motor 7 is controlled so that the process of rotating in each direction is repeatedly performed for 10 seconds. The control unit 110 ends the cooling cycle when the predetermined cooling cycle time elapses.

Referring to FIG. 11, the control unit 110 of the washing and drying machine 1 according to the disclosed embodiment proceeds with the drying cycle (900), and when the temperature of the drying device 31 reaches the set temperature for supplying condensate ( 910), supply of condensate begins (920).

When the air temperature inside the drying duct 40 reaches a predetermined temperature, the control unit 110 causes condensed water to be supplied to the drying device 31, thereby performing heat exchange between the humid air introduced through the inlet of the drying device 31 and the condensed water. This allows moisture to condense. The control unit 110 may operate the water supply valve 14 to supply condensed water to the drying device 31 through the sub water supply pipe 15.

When a predetermined time elapses after condensate water is supplied (930), the control unit 110 operates the drain pump 4 so that the condensate water stored in the tub 20 is drained (940). As described above, when moisture in the humid air condenses due to the supply of condensate, etc., the condensate water is stored in the lower part of the tub 20. The washing dryer 1 according to the disclosed embodiment does not drain the condensed water immediately when it accumulates in the lower part of the tub 20, but drains the water after a predetermined time has elapsed after supplying the condensed water.

There is a difference between the temperature of the condensate stored in the tub 20 and the temperature inside the drum 30, and this temperature difference can improve the condensation efficiency of wet air. Accordingly, the washing dryer 1 according to the disclosed embodiment does not perform drainage immediately along with supplying condensate water, but stores condensate until a predetermined time is reached after supplying condensate water, thereby improving condensation efficiency.

When a predetermined time has elapsed after supplying condensate water, the control unit 110 operates the drain pump 4 to drain the condensate water. The control unit 110 stops the operation of the drainage pump 4 when a predetermined driving time of the drainage pump 4 has elapsed.

Referring to FIG. 12, the control unit 110 of the washing and drying machine 1 according to the disclosed embodiment proceeds with the drying cycle (950), and when the temperature of the drying device 31 reaches the set temperature for supplying condensate ( 960), start supplying condensate (970). When the level of condensate reaches a predetermined level (980), the control unit 110 operates the drain pump 4 to drain the condensate stored in the tub 20 (990). Since steps 950-970 and 990 of FIG. 12 are the same as steps 900-920 and 940 of FIG. 11, the description is omitted and step 980 is explained.

As described above, when moisture in the humid air condenses due to the supply of condensate, etc., the condensed water is stored in the lower part of the tub 20. The washing dryer 1 according to the disclosed embodiment does not drain condensate immediately when it accumulates in the lower part of the tub 20, but performs draining when the water level of the condensate reaches a predetermined level. When the condensed water reaches a predetermined level as a result of detection by the water level sensor 96 provided at the bottom of the tub 20, the control unit 110 operates the drain pump 4 to drain the condensed water. The control unit 110 stops the operation of the drainage pump 4 when a predetermined driving time of the drainage pump 4 has elapsed.

In the above, one embodiment of the disclosed invention has been shown and described, but the disclosed invention is not limited to the specific embodiment described above, and those skilled in the art in the technical field to which the disclosed invention pertains without departing from the gist of the claims. Of course, various modifications are possible, and these modifications cannot be understood individually from the disclosed invention.

1: Washing dryer 7: Motor
13: water supply pipe 14: water supply valve
15: sub water supply pipe 16: connection water supply pipe
20: Tub 31: Drying shed
30: drum 40: drying duct
44: blowing fan 45: heater
50: suction member 60: filter
100: input unit 110: control unit

Claims (15)

tub;
a drum rotatably provided inside the tub;
a drying device provided on an upper part of the tub, which introduces air from the tub, heats the introduced air, and supplies it to the drum so that the laundry accommodated in the drum can be dried; and
A control unit that rotates the drum alternately clockwise and counterclockwise upon entering the drying cycle, rotating the drum clockwise for a first time and counterclockwise for a second time shorter than the first time; Including,
The control unit reduces the difference between the first time and the second time when the weight of the laundry is less than the minimum value of a predetermined reference range. According to paragraph 1,
The drying device is,
A laundry dryer provided at the upper right of the tub and including an inlet for introducing air from the tub and an outlet for supplying heated air to the drum. ◈Claim 3 was abandoned upon payment of the setup registration fee.◈ The method of claim 2, wherein the control unit,
A laundry dryer that rotates the drum clockwise for a first time and counterclockwise for a second time shorter than the first time to prevent interference between the inlet and the laundry stored in the drum. delete According to paragraph 1,
The control unit decreases the first time or increases the second time so that the difference between the first time and the second time is reduced. According to paragraph 1,
The control unit increases the difference between the first time and the second time when the weight of the laundry is greater than the maximum value of the predetermined reference range. ◈Claim 7 was abandoned upon payment of the setup registration fee.◈ According to clause 6,
The control unit increases the first time or decreases the second time so that the difference between the first time and the second time increases. According to paragraph 1,
When the drying cycle is completed, the control unit alternately rotates the drum clockwise and counterclockwise, and controls the rotation of the drum so that the clockwise and counterclockwise rotation times are the same. According to paragraph 1,
When the drying cycle ends, the control unit alternately rotates the drum clockwise and counterclockwise for a third time less than the second time, respectively. When entering the drying cycle, the air introduced from the tub is heated in the drying device and supplied to the drum;
During the drying cycle, the drum is alternately rotated clockwise for a first time and counterclockwise for a second time shorter than the first time, and the weight of the laundry contained in the drum is set to a predetermined standard. A control method for a washing dryer including: reducing the difference between the first time and the second time if it is less than the minimum value of the range. According to clause 10,
During the drying cycle, alternately rotating the drum clockwise for a first time and counterclockwise for a second time shorter than the first time,
Rotating the drum clockwise for a first time and counterclockwise for a second time shorter than the first time to prevent interference between the inlet of the drying device and the laundry stored in the drum. A laundry dryer comprising: control method. delete ◈Claim 13 was abandoned upon payment of the setup registration fee.◈ According to clause 10,
If the weight of the laundry is greater than the maximum value of the reference range, increasing the difference between the first time and the second time. According to clause 10,
When the drying cycle is completed, the drum is alternately rotated clockwise and counterclockwise, and the drum is rotated so that the clockwise and counterclockwise rotation times are the same. method According to clause 10,
When the drying cycle is terminated, alternately rotating the drum clockwise and counterclockwise for a third time less than the second time, respectively.

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