EP3296452B1 - Washing machine with drying apparatus and method of controlling the same - Google Patents
Washing machine with drying apparatus and method of controlling the same Download PDFInfo
- Publication number
- EP3296452B1 EP3296452B1 EP17191812.1A EP17191812A EP3296452B1 EP 3296452 B1 EP3296452 B1 EP 3296452B1 EP 17191812 A EP17191812 A EP 17191812A EP 3296452 B1 EP3296452 B1 EP 3296452B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- time
- drum
- drying apparatus
- tub
- drying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000001035 drying Methods 0.000 title claims description 164
- 238000005406 washing Methods 0.000 title claims description 86
- 238000000034 method Methods 0.000 title claims description 16
- 238000010981 drying operation Methods 0.000 claims description 50
- 230000003247 decreasing effect Effects 0.000 claims description 14
- 230000007423 decrease Effects 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 94
- 238000001816 cooling Methods 0.000 description 10
- 238000009833 condensation Methods 0.000 description 8
- 230000005494 condensation Effects 0.000 description 8
- 239000003599 detergent Substances 0.000 description 5
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000008237 rinsing water Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/46—Control of the operating time
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
- D06F58/04—Details
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/04—Quantity, e.g. weight or variation of weight
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/28—Air properties
- D06F2103/34—Humidity
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/38—Time, e.g. duration
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/44—Current or voltage
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
- D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity
Definitions
- Embodiments of the present invention relate to a washing machine with a drying apparatus and a method of controlling the same.
- Washing machines with drying apparatuses can provide a washing function and a drying function.
- washing machines with drying apparatuses rotate a drum in which a wet object is accommodated, and allow high-temperature dry air to pass through an inside of the drum, thereby drying the object in the drum.
- washing machines with drying apparatuses which provide a clockwise and counter clockwise rotation of the laundry disposed in the washing machine's drum.
- DE 40 32 079 A1 describes a drying apparatus comprising a control program for adapting a rotation time to a drying grade of the laundry.
- a washing machine with a drying apparatus includes: a tub; a drum rotatably provided inside the tub to rotate around a horizontal driving shaft; a drying apparatus provided at an upper portion of the tub, configured to introduce air from the tub, to heat the introduced air and to supply the heated air to the drum so that laundry accommodated in the drum is dried; and a control unit configured to rotate the drum alternately in a clockwise direction and a counterclockwise direction, respectively, to rotate the drum in the clockwise direction for a first time and to rotate the drum in the counterclockwise direction for a second time that is shorter than the first time when the washing machine with the drying apparatus enters a drying operation.
- the drying apparatus includes an inlet, which is provided at a right upper portion of the tub and through which air is introduced from the tub. Further a discharge port through which heated air may be supplied to the drum.
- the control unit may rotate the drum in the clockwise direction for the first time and in the counterclockwise direction for the second time that is shorter than the first time so that interference between the inlet and the laundry accommodated in the drum is prevented.
- the control unit decreases a difference between the first time and the second time.
- the control unit may decrease the first time or increases the second time so that the difference between the first time and the second time is decreased.
- control unit increases the difference between the first time and the second time.
- the control unit may increase the first time or decreases the second time so that the difference between the first time and the second time is increased.
- control unit may rotate the drum alternately in the clockwise direction and the counterclockwise direction, respectively, for a third time that is shorter than the second time.
- a method of controlling a washing machine with a drying apparatus includes: when the washing machine with the drying apparatus enters a drying operation, heating air introduced from a tub using the drying apparatus and supplying the heated air to a drum, the drum rotatably provided inside the tub to rotate around a horizontal driving shaft; and while the drying operation is performed, alternately rotating the drum in a clockwise direction for a first time and rotating the drum in a counterclockwise direction for a second time that is shorter than the first time.
- the rotating of the drum in the clockwise direction for the first time and the rotating of the drum in the counterclockwise direction for the second time that is shorter than the first time may include rotating the drum in the clockwise direction for the first time and rotating the drum in the counterclockwise direction for the second time that is shorter than the first time so that interference between an inlet of the drying apparatus and laundry accommodated in the drum is prevented.
- the rotating of the drum in the clockwise direction for the first time and the rotating of the drum in the counterclockwise direction for the second time that is shorter than the first time includes determining whether a weight of the laundry accommodated in the drum is included in a predetermined reference range; and when the weight of the laundry is smaller than a minimum value in the reference range, decreasing a difference between the first time and the second time.
- the rotating of the drum in the clockwise direction for the first time and the rotating of the drum in the counterclockwise direction for the second time that is shorter than the first time further includes, when the weight of the laundry is larger than a maximum value in the reference range, increasing the difference between the first time and the second time.
- the inlet is provided at a right upper portion of the tub and through which air is introduced from the tub.
- the method may further include, when the drying operation is finished, rotating the drum alternately in the clockwise direction and the counterclockwise direction, respectively so that a clockwise rotation time and a counterclockwise rotation time are the same.
- the method may further include, when the drying operation is finished, rotating the drum alternately in the clockwise direction and the counterclockwise direction, respectively, for a third time that is shorter than the second time.
- the present specification does not describe all elements of the embodiments, and a general description in the art to which the present invention pertains, or redundant descriptions with the embodiments will be omitted.
- the terms 'part or portion' used herein may be implemented with software or hardware, and according to the embodiments, a plurality of 'parts or portions' may be implemented with one element (or unit), or one 'part or portion' may also include a plurality of elements.
- FIG. 1 is a cross-sectional view of a washing machine with a drying apparatus according to an embodiment of the present invention
- FIG. 2 is a view of a configuration of the washing machine with the drying apparatus according to an embodiment of the present invention
- FIG. 3 is an exploded view of the washing machine with the drying apparatus according to an embodiment of the present invention
- FIG. 4 is a view of the flow of air for drying in the washing machine with the drying apparatus according to an embodiment of the present invention.
- a washing machine 1 with a drying apparatus includes a cabinet 10 that forms the exterior, a tub 20 installed inside the cabinet 10, a drum 30 rotatably installed inside the tub 20, and a motor 7 that drives the drum 30.
- the cabinet 10 includes frames 10a, 10b, 10c, and 10d.
- the frames 10a, 10b, 10c, and 10d may include a top frame 10a that constitutes a top surface of the cabinet 10, a front frame 10b and a rear frame 10c that constitute front and rear surfaces of the cabinet 10, and a bottom frame 10d that connects the front frame 10b to the rear frame 10c and constitutes a bottom surface (floor surface) of the cabinet 10.
- the bottom frame 10d may include a bottom hole 10e through which air can be introduced from the outside of the washing machine 1 with the drying apparatus.
- the laundry port 2a is open and closed by a door 2 installed at the front frame 10b of the cabinet 10.
- a spring 17 may be provided between the cabinet 10 and the tub 20 so as to support the tub 20 at an upper side of the washing machine 1 with the drying apparatus.
- An elastic force of the spring 17 may alleviate vibration and noise caused by movement of the tub 20.
- the tub 20 is supported by a damper 18.
- the damper 18 connects an inside bottom surface of the cabinet 10 to an outside of the tub 20.
- the damper 18 may be provided at an upper side and left and right sides of the cabinet 10 as well as the inside bottom surface of the cabinet 10 so as to support the tub 20.
- the damper 18 may also alleviate vibration and noise caused by movement of the tub 20, like the spring 17.
- the tub 20 may include a first tub 21 placed in front of the inside of the cabinet 10, and a second tub 22 coupled to a rear surface of the first tub 21.
- the first tub 21 may include a cylindrical portion and a front plate placed at a front surface of the cylindrical portion.
- the second tub 22 may include a cylindrical portion disposed in a circumferential direction, and a rear plate placed at a rear surface of the cylindrical portion. The cylindrical portion of the first tub 21 and the cylindrical portion of the second tub 22 are coupled to each other, thereby constituting the tub 20.
- a water supply pipe 13 for supplying water (washing water or rinsing water) to the tub 20 may be disposed at an upper portion of 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 a detergent supply device 12.
- the water supply pipe 13 may include a sub-water supply pipe 15 connected to an intake member 50 that will be described later.
- the sub-water supply pipe 15 may be diverged from the water supply pipe 13 and connected to the intake member 50.
- the detergent supply device 12 may be connected to the tub 20 via a connection water supply pipe 16. This is because the detergent supply device 12 is placed in front of the inside of the cabinet 10.
- the connection water supply pipe 16 may have a U-trap shape so as to prevent humid air generated in progress of a drying operation from leaking to the outside.
- Water supplied via the water supply pipe 13 passes through the detergent supply device 12 and is supplied to an inside of the tub 20 via the connection water supply pipe 16 together with a detergent.
- a water supply valve 14 may be installed at the water supply pipe 13 so as to control the supply of water.
- the drum 30 may include a plurality of through holes 27 through which washing water flows.
- the drum 30 may include a plurality of lifters 26 provided at an inner circumferential surface of the drum 30 so that laundry can ascend or descend when the drum 30 is rotated.
- a driving shaft 11 may be provided between the drum 30 and the motor 7 so as to transfer a driving force of the motor 7 to the drum 30.
- One end of the driving shaft 11 is connected to a rear plate of the drum 30, and the other end of the driving shaft 11 extends from the outside of a rear wall of the tub 20.
- the motor 7 When the motor 7 is driven, the drum 30 connected to the driving shaft 11 rotates around the driving shaft 11.
- the motor 7 may be implemented with a universal motor including a field coil and an armature, or a brushless direct (BLDC) motor including a permanent magnet and an electric magnet.
- BLDC brushless direct
- a bearing housing 8 may be provided on a rear plate of the second tub 22 so as to rotatably support the driving shaft 11.
- the bearing housing 8 may be formed of an aluminum alloy and may be inserted into a 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 driving shaft 11 so that the driving shaft 11 can be smoothly rotated.
- a drain pump 4 for discharging water inside the tub 20 to the outside of the cabinet 10 may be provided below the tub 20.
- a connection hose 3 that connects the tub 20 to the drain pump 4 so that water inside the tub 20 can flow into the drain pump 4, and a drain hose 5 that guides water pumped by the drain pump 4 to the outside of the cabinet 10, may be provided.
- a water level sensing sensor 96 that senses the level of condensate water generated in progress of the drying operation may be provided at a lower side of a rear surface of the tub 20.
- a water level sensing sensor 96 that senses the level of condensate water generated in progress of the drying operation may be provided at a lower side of a rear surface of the tub 20.
- a drying apparatus 31 is installed in the tub 20 so as to dry high-temperature humid air inside the tub 20 and then to supply the air to the inside of the tub 20.
- the drying apparatus 31 removes moisture of condensed air from the inside of the tub 20.
- the drying apparatus 31 includes the intake member 50 provided to intake humid air generated during the drying operation, and a drying duct 40 that heats the air suctioned by the intake member 50 and supplies the heated air to the drum 30, as illustrated in FIG. 3 .
- the drying apparatus 31 heats air inside the tub 20 and circulates the air so that laundry inside the drum 30 can be dried. Thus, air circulates and moves to the inside of the tub 20 and the drying duct 40.
- the drying duct 40 and the intake member 50 will now be described in more detail.
- the drying duct 40 may include an upper plate 41 and a lower plate 42. Also, the drying duct 40 may include a head 43 provided at an upper side of a blower fan 44.
- the blower fan 44 forms a circulation flow of air so that air inside the tub 20 can flow into the drying duct 40 and can be discharged to the inside of the tub 20 again.
- the intake member 50 on which the blower fan 44 is seated may be provided at a lower side of the drying duct 40.
- the intake member 50 will be described later with reference to FIGS. 5 through 8 .
- One side of the drying duct 40 is coupled to a front panel 21 a that extends from one side of the first tub 21.
- the other side of the drying duct 40 is coupled to the intake member 50, and the intake member 50 is coupled to a connection member 71 that mediates connection to the second tub 22.
- the connection member 71 is coupled to a hole 25 of the second tub 22. Humid air generated during the drying operation is introduced into the drying apparatus 31 via the hole 25 of the second tub 22 due to an intake force generated by the intake member 50, passes through the drying duct 40 and is supplied into the drum 30 via the front panel 21a.
- the drying duct 40 may include a heater 45 provided to heat air inside thereof. Also, the drying duct 40 may include a bracket 46 provided to couple the heater 45 to the drying duct 40.
- the heater 45 may be bent several times and provided in a zigzag form, as illustrated in FIG. 3 .
- the heater 45 may include a terminal portion (not shown) to which an electric wire through which current flows, is connected, a sealing member (not shown) that is mounted to be spaced apart from the terminal portion by a predetermined distance and prevents leakage of air, and a heating portion (not shown) that extends from the terminal portion.
- the bracket 46 is coupled to the outside of the upper plate 41 and the lower plate 42 so as to fix the heater 45 into the drying duct 40.
- the bracket 46 may be implemented with a material having an insulating property and high heat resistance so as to prevent heating caused by heat generated in the heater 45.
- the bracket 46 may be implemented with polyphenylene sulfide (PPS), polyethylene terephthalate (PET), etc.
- a filter 60 may be provided in the connection member 71 of the drying duct 40 so as to filter dust or lint generated while laundry is dried in the progress of the drying operation.
- the intake member 50 may include a front member 53 placed at a front side of the intake member 50 and a rear member 52 placed at a rear side of the intake member 50.
- FIG. 5 is a view of the intake member 50 according to an embodiment
- FIG. 6 is an exploded view of the intake member 50 according to an embodiment.
- FIG. 7 is a view of the intake member 50 according to an embodiment at a different angle
- FIG. 8 is a cross-sectional view of the intake member 50 according to an embodiment.
- a seating portion 53a on which the blower fan 44 is seated, may be provided in the front member 53.
- the seating portion 53a may communicate with the tub 20, and humid air may be moved to the seating portion 53a due to driving of the blower fan 44.
- a slit 54 through which air outside the tub 20 is suctioned, may be provided in at least a portion of the front member 53.
- a front member communication port 51 through which the front member 53 communicates with the tub 20, may be formed in a lower side of the front member 53.
- An intake port 52a through which air between the tub 20 and the cabinet 10 is suctioned, may be provided in the rear member 52.
- the intake port 52a may be provided in a protrusion 52i that protrudes from the rear member 52 upward. This is to prevent bubbles or washing water from overflowing outward through the intake port 52a.
- a fixing portion may be provided in at least a portion of the rear member 52 so as to fix the intake member 50 to the cabinet 10.
- the fixing portion may include first fixing portions 52g and 10g that couples a hook 52g provided in a rear surface of the rear member 52 to a hook groove 10g of the cabinet 10 and fixes the intake member 50 to the cabinet 10.
- the fixing portion may include a second fixing portion 52h that fixes the cabinet 10 to the intake member 50 using an additional fastening member (not shown).
- the front member 53 and the rear member 52 are fastened to each other using at least one fastening portion.
- the fastening portion may include first fastening portions 52b and 53b that fasten the front member 53 to the rear member 52 using a hook 52b.
- the fastening portion may include second fastening portions 52f and 53f that fasten the front member 53 to the rear member 52 using an additional fastening member (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 corresponds to the shape of the front member fastening hole 53f.
- a fastening member (not shown) is inserted into the front member fastening hole 53f through the rear member fastening hole 52f so as to couple the front member 53 to the rear member 52.
- a flow path on which air suctioned through the intake port 52a is moved may be provided at inner sides of the front member 53 and the rear member 52.
- a flow path provided at the inner side of the rear member 52 is referred to as a first flow path 52c
- a flow path provided at the inner side of the front member 53 is referred to as a second flow path 53c.
- the front member 53 and the rear member 52 may include inclination portions 52d and 53d having inclined floor surfaces. The inclination portions 52d and 53d may be inclined toward the blower fan 44 to guide movement of air.
- the inclination portions 52d and 53d may be inclined with respect to a horizontal plane by 1° to 20°. Referring to FIG. 8 , an angle ⁇ at which the inclination portion 53d provided in the front member 53 is inclined with respect to the horizontal plane is 15°, and an angle ⁇ at which the inclination portion 52d provided in the rear member 52 is inclined with respect to the horizontal plane is 1°. However, embodiments of the present invention are not limited thereto.
- the above-described inclination portions 52d and 53d may prevent washing water inside the tub 20 from flowing backward from the tub 20 and overflowing.
- the intake member 50 includes a flow path on which air may be moved, thereby suctioning air between the cabinet 10 and the tub 20.
- the drying apparatus 31 may dry laundry using such air so that a drying time can be reduced.
- high-temperature humid air inside the tub 20 may be introduced via the inlet, and low-temperature low-humidity air inside the washing machine 1 with the drying apparatus may be simultaneously suctioned via the intake port 52a of the intake member 50 so that air condensation can be performed in the drying duct 40.
- heated air supplied to the drum 30 may absorb moisture from the laundry accommodated in the drum 30 and then may be condensed by the surface of the inside of the tub 20.
- condensate water is supplied from a sub-drain pipe so that condensation of humid air can be performed. Condensate water generated through the above-described condensation procedure is stored in a lower portion of the tub 20. Drainage of condensate water stored in the lower portion of the tub 20 will be described later.
- the drying apparatus 31 including the drying duct 40 is provided at a right upper portion of the tub 20. That is, the drying apparatus 31 is provided in a direction of approximately 1 o'clock (not 12 o'clock) when viewing the washing machine 1 with the drying apparatus from the front. Because the drying apparatus 31 is slightly inclined in the direction of 1 o'clock, interference between the laundry and the inlet of the drying apparatus 31 may occur according to a rotation direction of the drum 30. That is, the laundry closes the inlet so that the efficiency of air circulation for drying the laundry is decreased and drying efficiency can be decreased. In the washing machine 1 with the drying apparatus according to the embodiment, the frequency of interference between the laundry and the inlet is decreased so that drying efficiency can be improved and a drying time can be reduced.
- the washing machine 1 with the drying apparatus according to the embodiment that is capable of decreasing the frequency of interference between the inlet and the laundry will be described in detail with reference to FIGS. 9 through 12 .
- FIG. 9 is a control configuration view of the washing machine 1 with the drying apparatus according to an embodiment of the present invention.
- the washing machine 1 with the drying apparatus according to the embodiment further includes an input unit 100, a control unit 110, a memory 120, and a display unit 140.
- the input unit 100 is provided so that instructions for performing a washing operation, a rinsing operation, a dehydration operation and a drying operation of the washing machine 1 with the drying apparatus can be inputted to the washing machine 1 with the drying apparatus through the input unit 100.
- the input unit 100 may include a variety of buttons disposed on a control panel so that operating information such as a drying course (for example, normal, towels, perm, delicates, etc.), a drying time, operating instructions, etc., which are selected by a user, can be inputted to the washing machine 1 with the drying apparatus through the buttons.
- a drying course for example, normal, towels, perm, delicates, etc.
- a drying time for example, normal, towels, perm, delicates, etc.
- operating instructions etc.
- the input unit 100 may include a jog dial provided to select a drying state (for example, half-drying, full drying, etc.) as well as the buttons.
- a drying state for example, half-drying, full drying, etc.
- the input unit 100 is not limited to the above-described example and may include various devices provided to input instructions due to an operation such as press, contact, pressure, rotation, etc.
- the display unit 140 may display the operating state of the washing machine 1 with the drying apparatus according to a display control signal of the control unit 110. Also, the display unit 140 may be provided so that a touch gesture can be inputted to the display unit 140, thereby receiving instructions according to the user's touch gesture and displaying an operating state corresponding to the instructions.
- the display unit 140 may provide a liquid crystal display (LCD) user interface (Ul) on which a text can be written, thereby displaying the operating state of the washing machine 1 with the drying apparatus with the text. Also, the display unit 140 may provide a light-emitting diode (LED) UI so that the user can recognize the abnormal state of the washing machine 1 with the drying apparatus using lighting or flickering, or a lighting duration time difference.
- LCD liquid crystal display
- LED light-emitting diode
- the memory 120 may store various control data for controlling the operation of the washing machine 1 with the drying apparatus, usage information including the number of times at which the washing machine 1 with the drying apparatus performs a particular operation, model information of the washing machine 1 with the drying apparatus, and failure information including the cause of malfunction or the position of malfunction when malfunction of the washing machine 1 with the drying apparatus occurs. Also, in regard to the drying operation, data about a rotation time according to the rotation direction of the drum 30 can be stored.
- the control unit 110 may include a microprocessor for controlling the overall operation of the washing machine 1 with the drying apparatus such as the washing operation, the rinsing operation, the dehydration operation, and the drying operation according to operation information inputted by the input unit 100.
- the control unit 110 may set a washing and rinsing quantity, a dehydration revolution per minute (RPM), a motor operation rate (motor on-off time), and a washing and dehydration time according to the weight (load quantity) of laundry in a selected washing course.
- RPM dehydration revolution per minute
- motor operation rate motor on-off time
- the control unit 110 of the washing machine 1 with the drying apparatus controls the drying apparatus 31 so that heated air can be supplied to the laundry accommodated in the drum 30, and drives the motor 7 so that the laundry accommodated in the drum 30 can flow, to rotate the drum 30.
- the control unit 110 rotates the drum 30 alternately in a clockwise direction and a counterclockwise direction, respectively.
- Clockwise and counterclockwise directions that are rotation directions of the drum 30 are defined as clockwise and counterclockwise directions when the drum 30 is viewed from the front of the washing machine 1 with the drying apparatus.
- the inlet of the drying apparatus 31 is provided in a position corresponding to the direction of approximately 1 o'clock, when the drum 30 is rotated in the counterclockwise direction, interference between the laundry and the inlet may occur. That is, when the drum 30 is rotated in the counterclockwise direction, the laundry is rotated in the counterclockwise direction together with the drum 30 and descends in a direction of approximately 12 o'clock so that interference between the laundry and the inlet occurs continuously while the drum 30 is rotated in the counterclockwise direction.
- the control unit 110 may perform repeatedly an operation of rotating the drum 30 in the clockwise direction for 600 seconds and then rotating the drum 30 in the counterclockwise direction for 60 seconds.
- the above-described rotation time of the drum 30 is just an example, and the case where the first time that is the clockwise rotation time is longer than the second time that is the counterclockwise rotation time, may be included in the embodiment.
- control unit 110 of the washing machine 1 with the drying apparatus may control a difference between the above-described first time and second time according to the weight of the laundry.
- the control unit 110 rotates the drum 30 for the predetermined first time and second time when the weight of the laundry is included in a predetermined reference range.
- the first time may be 600 seconds
- the second time may be 60 seconds.
- the weight of the laundry When the weight of the laundry is not included in the above-described reference range and is smaller than a minimum value in the reference range, the difference between the first time and the second time can be decreased.
- the weight of the laundry When the weight of the laundry is smaller than the minimum value in the reference range, the quantity of the laundry may be smaller than in the case where the weight of the laundry is included in the reference range or is larger than a maximum value in the reference range. Thus, the frequency of interference between the laundry and the inlet can be decreased.
- control unit 110 may increase only the second time in a state in which the first time is not changed.
- control unit 110 may increase the difference between the first time and the second time.
- the quantity of the laundry may be larger than in the case where the weight of the laundry is included in the reference range or is smaller than the minimum value in the reference range.
- the frequency of interference between the laundry and the inlet can be increased.
- the second time that is the counterclockwise rotation time may be reduced, and the first time that is the clockwise rotation time may be increased by a reduction.
- the control unit 110 may also decrease only the second time in a state in which the first time is not changed.
- the memory 120 may store data of the rotation time according to each rotation direction of the drum 30 in advance. Also, as described above, the memory 120 may store data of the rotation time in each rotation direction of the drum 30 according to the weight of the laundry in advance.
- the washing machine 1 with the drying apparatus according to the embodiment condenses moisture included in humid air generated during the drying operation and removes moisture, heats air from which moisture is removed, supplies the heated air to the drum 30, thereby drying the laundry.
- the washing machine 1 with the drying apparatus according to the embodiment supplies condensate water to the drying apparatus 31 and removes moisture included in humid air. Supply and drainage of condensate water in the washing machine 1 with the drying apparatus according to the embodiment will now be described in detail.
- control unit 110 drives the motor 7 to rotate the drum 30, thereby rotating the laundry inside the drum 30. Also, the control unit 110 drives the blower fan 44 so that air flows inside the drum 30.
- the control unit 110 drives the heater 45 so as to heat air introduced into the drying apparatus 31 due to driving of the blower fan 44. Air heated by the heater 45 is introduced into the drum 30 via the drying duct 40. Hot air introduced into the drum 30 takes moisture from the laundry that repeatedly ascends or descends inside the drum 30 and is rotated so that the laundry can be dried.
- the high-temperature humid air inside the tub 20 is introduced into the drying duct 40 via the inlet, and low-temperature low-humidity air inside the washing machine 1 with the drying apparatus is also introduced into the drying duct 40 via the intake port 52a of the intake member 50.
- the high-temperature humid air and the low-temperature low-humidity air are mixed with each other so that condensation is performed.
- the condensed air passes through the heater 45 and the drum 30, takes moisture from the laundry and is condensed in the tub 20.
- control unit 110 allows condensate water to be supplied to the drying apparatus 31 so that moisture can be condensed through heat-exchanging of humid air introduced via the inlet of the drying apparatus 31 and condensate water.
- the control unit 110 operates the water supply valve 14 so that condensate water can be supplied to the drying apparatus 31 via the sub-water supply pipe 15.
- a temperature sensor that senses the temperature of air may be provided inside the drying duct 40.
- condensate water is stored in the lower portion of the tub 20.
- condensate water is not directly drained, and when the level of condensate water reaches a predetermined level or a predetermined time has elapsed after the supply of condensate water, drainage is performed.
- the temperature of condensate water stored in the tub 20 and temperature of the inside of the drum 30 are different from each other, and this temperature difference may improve condensation efficiency of humid air.
- drainage is not directly performed together with the supply of condensate water but condensate water is stored until the condensate water reaches the predetermined level or until a predetermined time has elapsed after the supply of condensate water so that condensation efficiency can be improved.
- the control unit 110 When, as a result of sensing of the water level sensing sensor 96 disposed at the lower portion of the tub 20, condensate water reaches a predetermined level or a predetermined time has elapsed after the supply of condensate water, the control unit 110 operates the drain pump 4 to drain the condensate water. When a predetermined driving time of the drain pump 4 has elapsed, the control unit 110 stops the operation of the drain pump 4.
- the water level or time for drainage of condensate water may be determined in advance so that condensate water is not introduced into the drum 30 and thus may be stored in the memory 120.
- the control unit 110 performs the above-described supply and drainage operations of condensate water repeatedly in progress of the drying operation.
- the clockwise rotation time of the drum 30 is controlled longer than the counterclockwise rotation time of the drum 30, and drainage of condensate water is performed in consideration of the level of condensate water or an elapsed time after the supply of condensate water so that a drying time can be reduced and furthermore, drying efficiency can be improved.
- FIGS. 10 through 12 are flowcharts illustrating a method of controlling the washing machine 1 with the drying apparatus according to an embodiment.
- a method of controlling rotation of the drum 30 in progress of a drying operation will be described with reference to FIG. 10
- a method of controlling drainage of condensate water in progress of the drying operation will be described with reference to FIGS. 11 and 12 .
- the control unit 110 of the washing machine 1 with the drying apparatus rotates the drum 30 in the clockwise direction for a first time (810), and when the first time has elapsed, the control unit 110 of the washing machine 1 with the drying apparatus rotates the drum 30 in the counterclockwise direction for a second time that is shorter than the first time (820).
- control unit 110 of the washing machine 1 with the drying apparatus controls the drying apparatus 31 so that heated air can be supplied to the laundry accommodated in the drum 30, drives the motor 7 so that the laundry accommodated in the drum 30 can flow, to rotate the drum 30.
- the control unit 110 rotates the drum 30 alternately in the clockwise direction and the counterclockwise direction, respectively.
- control unit 110 of the washing machine 1 with the drying apparatus rotates the drum 30 alternately in the clockwise direction and the counterclockwise direction, respectively, and controls rotation of the drum 30 so that the first time that is the clockwise rotation time is longer than the second time that is the counterclockwise rotation time.
- the control unit 110 may perform repeatedly an operation of rotating the drum 30 in the clockwise direction for 600 seconds and then rotating the drum 30 in the counterclockwise direction for 60 seconds.
- the drum 30 is rotated in the clockwise direction longer than in the counterclockwise direction, the effects of flow of the laundry and tangle prevention of the laundry can be maintained, and the frequency of interference between the inlet and the laundry is decreased so that drying efficiency can be improved.
- the control unit 110 When the drying operation is completed (830), the control unit 110 performs a cooling operation (840). When the cooling operation is performed, the control unit 110 rotates the drum 30 in the clockwise direction for a third time (850), and when the third time has elapsed, the control unit 110 rotates the drum 30 in the counterclockwise direction for the third time (860). The control unit 110 finishes the cooling operation when a time for the cooling operation has elapsed (870).
- the control unit 110 stops the heater 45 and drives the motor 7 and the blower fan 44 to perform the cooling operation.
- the cooling operation is an operation of stopping the heater 45 and periodically turning on/off the blower fan 44. This is to prevent the user from being exposed to high-temperature air excessively discharged from the door 2 when the door 2 is open after the drying operation of the washing machine 1 with the drying apparatus is finished.
- the control unit 110 rotates the drum 30 alternately in the clockwise direction and the counterclockwise direction, respectively, while the cooling operation is performed.
- the control unit 110 controls the motor 7 so that the clockwise rotation time and the counterclockwise rotation time are the same, unlike when the drying operation is performed. That is, the control unit 110 controls the motor 7 so that an operation of rotating the drum 30 in the clockwise direction for the third time that is shorter than the second time, for example, for 10 seconds while the cooling operation is performed, and when 10 seconds have elapsed, rotating the drum 30 in the counterclockwise direction for 10 seconds can be repeatedly performed.
- the control unit 110 finishes the cooling operation when a predetermined time for the cooling operation has elapsed.
- the control unit 110 of the washing machine 1 with the drying apparatus starts the supply of condensate water (920) when a drying operation is performed (900) and temperature of the drying apparatus 31 reaches a set temperature for the supply of condensate water (910).
- control unit 110 When temperature of air inside the drying duct 40 reaches a predetermined temperature, the control unit 110 allows condensate water to be supplied to the drying apparatus 31 so that moisture can be condensed through heat-exchanging of humid air introduced through the inlet of the drying apparatus 31 and condensate water.
- the control unit 110 operates the water supply valve 14 so that condensate water can be supplied to the drying apparatus 31 via the sub-water supply pipe 15.
- the control unit 110 When a predetermined time has elapsed after condensate water is supplied (930), the control unit 110 operates the drain pump 4 so that condensate water stored in the tub 20 can be discharged (940). As described above, when moisture of humid air is condensed due to the supply of condensate water, condensate water is stored in the lower portion of the tub 20. In the washing machine 1 with the drying apparatus according to the embodiment, when condensate water is stored in the lower portion of the tub 20, condensate water is not directly discharged, and when a predetermined time has elapsed after the supply of condensate water, drainage is performed.
- the temperature of condensate water stored in the tub 20 and the temperature inside the drum 30 are different from each other, and this temperature difference may improve condensation efficiency of humid air.
- drainage is not directly performed together with the supply of condensate water, and condensate water is stored until a predetermined time after the supply of condensate water has elapsed, so that condensation efficiency can be improved.
- control unit 110 When the predetermined time after the supply of condensate water has elapsed, the control unit 110 operates the drain pump 4 to drain condensate water. The control unit 110 stops the operation of the drain pump 4 when a predetermined driving time of the drain pump 4 has elapsed.
- the control unit 110 of the washing machine 1 with the drying apparatus starts the supply of condensate water (970).
- the control unit 110 operates the drain pump 4 so that condensate water stored in the tub 20 can be discharged (990).
- Operations 950 to 970 and 990 of FIG. 12 are the same as Operations 900 to 920 and 940 of FIG. 11 and thus, descriptions thereof will be omitted, and Operation 980 has been described.
- condensate water is stored in the lower portion of the tub 20.
- the condensate water is not directly discharged, and when the level of condensate water reaches a predetermined level, drainage is performed.
- the control unit 110 operates the drain pump 4 to discharge the condensate water.
- the control unit 110 stops the operation of the drain pump 4.
- a drying time can be reduced at the same drying temperature.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Description
- Embodiments of the present invention relate to a washing machine with a drying apparatus and a method of controlling the same.
- Washing machines with drying apparatuses can provide a washing function and a drying function. In general, washing machines with drying apparatuses rotate a drum in which a wet object is accommodated, and allow high-temperature dry air to pass through an inside of the drum, thereby drying the object in the drum.
- Recently, research into providing an optimum drying service to a user and simultaneously improving energy efficiency of drying machines is processing.
- From
JP 2012 050474 A JP 2009 072495 A EP 2 392 725 A2JP 2007 167263 A addition DE 40 32 079 A1 describes a drying apparatus comprising a control program for adapting a rotation time to a drying grade of the laundry. - Therefore, it is an aspect of the present invention to provide a washing machine with a drying apparatus that, when alternately rotating a drum in a clockwise direction and a counterclockwise direction, respectively, during a drying operation, rotates the drum in the clockwise direction longer than in the counterclockwise direction.
- Additional aspects of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
- In accordance with one aspect of the present invention, a washing machine with a drying apparatus includes: a tub; a drum rotatably provided inside the tub to rotate around a horizontal driving shaft; a drying apparatus provided at an upper portion of the tub, configured to introduce air from the tub, to heat the introduced air and to supply the heated air to the drum so that laundry accommodated in the drum is dried; and a control unit configured to rotate the drum alternately in a clockwise direction and a counterclockwise direction, respectively, to rotate the drum in the clockwise direction for a first time and to rotate the drum in the counterclockwise direction for a second time that is shorter than the first time when the washing machine with the drying apparatus enters a drying operation.
- The drying apparatus includes an inlet, which is provided at a right upper portion of the tub and through which air is introduced from the tub. Further a discharge port through which heated air may be supplied to the drum.
- The control unit may rotate the drum in the clockwise direction for the first time and in the counterclockwise direction for the second time that is shorter than the first time so that interference between the inlet and the laundry accommodated in the drum is prevented.
- When a weight of the laundry is smaller than a minimum value in a predetermined reference range, the control unit decreases a difference between the first time and the second time.
- The control unit may decrease the first time or increases the second time so that the difference between the first time and the second time is decreased.
- Alternatively, or additionally, when the weight of the laundry is larger than a maximum value in a predetermined reference range, the control unit increases the difference between the first time and the second time.
- The control unit may increase the first time or decreases the second time so that the difference between the first time and the second time is increased.
- When the drying operation is finished, the control unit may control rotation of the drum so that the drum is rotated alternately in the clockwise direction and the counterclockwise direction, respectively, and a clockwise rotation time and a counterclockwise rotation time are the same.
- When the drying operation is finished, the control unit may rotate the drum alternately in the clockwise direction and the counterclockwise direction, respectively, for a third time that is shorter than the second time.
- In accordance with another aspect of the present invention, a method of controlling a washing machine with a drying apparatus includes: when the washing machine with the drying apparatus enters a drying operation, heating air introduced from a tub using the drying apparatus and supplying the heated air to a drum, the drum rotatably provided inside the tub to rotate around a horizontal driving shaft; and while the drying operation is performed, alternately rotating the drum in a clockwise direction for a first time and rotating the drum in a counterclockwise direction for a second time that is shorter than the first time.
- While the drying operation is performed, the rotating of the drum in the clockwise direction for the first time and the rotating of the drum in the counterclockwise direction for the second time that is shorter than the first time may include rotating the drum in the clockwise direction for the first time and rotating the drum in the counterclockwise direction for the second time that is shorter than the first time so that interference between an inlet of the drying apparatus and laundry accommodated in the drum is prevented.
- While the drying operation is performed, the rotating of the drum in the clockwise direction for the first time and the rotating of the drum in the counterclockwise direction for the second time that is shorter than the first time includes determining whether a weight of the laundry accommodated in the drum is included in a predetermined reference range; and when the weight of the laundry is smaller than a minimum value in the reference range, decreasing a difference between the first time and the second time.
- While the drying operation is performed, the rotating of the drum in the clockwise direction for the first time and the rotating of the drum in the counterclockwise direction for the second time that is shorter than the first time further includes, when the weight of the laundry is larger than a maximum value in the reference range, increasing the difference between the first time and the second time.
- Wherein the inlet is provided at a right upper portion of the tub and through which air is introduced from the tub.
- The method may further include, when the drying operation is finished, rotating the drum alternately in the clockwise direction and the counterclockwise direction, respectively so that a clockwise rotation time and a counterclockwise rotation time are the same.
- The method may further include, when the drying operation is finished, rotating the drum alternately in the clockwise direction and the counterclockwise direction, respectively, for a third time that is shorter than the second time.
- These and/or other aspects of the invention will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
-
FIG. 1 is a cross-sectional view of a washing machine with a drying apparatus according to an embodiment of the present invention; -
FIG. 2 is a view of a configuration of the washing machine with the drying apparatus according to an embodiment of the present invention; -
FIG. 3 is an exploded view of the washing machine with the drying apparatus according to an embodiment of the present invention; -
FIG. 4 is a view of the flow of air for drying in the washing machine with the drying apparatus according to an embodiment of the present invention; -
FIG. 5 is a view of an intake member according to an embodiment of the present invention; -
FIG. 6 is an exploded view of the intake member according to an embodiment of the present invention; -
FIG. 7 is a view of the intake member according to an embodiment of the present invention at a different angle; -
FIG. 8 is a cross-sectional view of the intake member according to an embodiment of the present invention; -
FIG. 9 is a control configuration view of the washing machine with the drying apparatus according to an embodiment of the present invention; and -
FIGS. 10 through 12 are flowcharts illustrating a method of controlling a washing machine with a drying apparatus, according to an embodiment of the present invention. - The principle and embodiments of the present invention will be provided so that the scope of a right of the present invention is clarified and one of ordinary skill in the art can embody the present invention. The embodiments can be implemented in various forms.
- Like reference numerals throughout the specification refer to like elements.
- The present specification does not describe all elements of the embodiments, and a general description in the art to which the present invention pertains, or redundant descriptions with the embodiments will be omitted. The terms 'part or portion' used herein may be implemented with software or hardware, and according to the embodiments, a plurality of 'parts or portions' may be implemented with one element (or unit), or one 'part or portion' may also include a plurality of elements.
- In addition, when any part or portion "includes" any element, it is to be understood that a part or portion does not exclude another element but further includes another element unless specially otherwise recited.
- As used herein, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
- Identification numerals in each of steps are used for conveniences of explanation and do not explain the order of each of the steps, and the respective steps may be performed differently from the described order unless the context clearly indicates a certain order.
- 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 machine with a drying apparatus according to an embodiment of the present invention,FIG. 2 is a view of a configuration of the washing machine with the drying apparatus according to an embodiment of the present invention,FIG. 3 is an exploded view of the washing machine with the drying apparatus according to an embodiment of the present invention, andFIG. 4 is a view of the flow of air for drying in the washing machine with the drying apparatus according to an embodiment of the present invention. - Referring to
FIGS. 1 through 3 , awashing machine 1 with a drying apparatus includes acabinet 10 that forms the exterior, atub 20 installed inside thecabinet 10, adrum 30 rotatably installed inside thetub 20, and amotor 7 that drives thedrum 30. - The
cabinet 10 includesframes frames top frame 10a that constitutes a top surface of thecabinet 10, afront frame 10b and arear frame 10c that constitute front and rear surfaces of thecabinet 10, and abottom frame 10d that connects thefront frame 10b to therear frame 10c and constitutes a bottom surface (floor surface) of thecabinet 10. Thebottom frame 10d may include abottom hole 10e through which air can be introduced from the outside of thewashing machine 1 with the drying apparatus. - A
laundry port 2a through which laundry may be put into thedrum 30 or may be taken out from the inside of thedrum 30, is formed at thefront frame 10b of thecabinet 10. Thelaundry port 2a is open and closed by adoor 2 installed at thefront frame 10b of thecabinet 10. - A
spring 17 may be provided between thecabinet 10 and thetub 20 so as to support thetub 20 at an upper side of thewashing machine 1 with the drying apparatus. An elastic force of thespring 17 may alleviate vibration and noise caused by movement of thetub 20. Also, thetub 20 is supported by adamper 18. Thedamper 18 connects an inside bottom surface of thecabinet 10 to an outside of thetub 20. Also, thedamper 18 may be provided at an upper side and left and right sides of thecabinet 10 as well as the inside bottom surface of thecabinet 10 so as to support thetub 20. Thedamper 18 may also alleviate vibration and noise caused by movement of thetub 20, like thespring 17. - The
tub 20 may include afirst tub 21 placed in front of the inside of thecabinet 10, and asecond tub 22 coupled to a rear surface of thefirst tub 21. Thefirst tub 21 may include a cylindrical portion and a front plate placed at a front surface of the cylindrical portion. Thesecond tub 22 may include a cylindrical portion disposed in a circumferential direction, and a rear plate placed at a rear surface of the cylindrical portion. The cylindrical portion of thefirst tub 21 and the cylindrical portion of thesecond tub 22 are coupled to each other, thereby constituting thetub 20. - Referring to
FIGS. 1 and2 , awater supply pipe 13 for supplying water (washing water or rinsing water) to thetub 20 may be disposed at an upper portion of thetub 20. One side of thewater supply pipe 13 is connected to an external water supply source (not shown), and the other side of thewater supply pipe 13 is connected to adetergent supply device 12. - The
water supply pipe 13 may include asub-water supply pipe 15 connected to anintake member 50 that will be described later. Thesub-water supply pipe 15 may be diverged from thewater supply pipe 13 and connected to theintake member 50. - The
detergent supply device 12 may be connected to thetub 20 via a connectionwater supply pipe 16. This is because thedetergent supply device 12 is placed in front of the inside of thecabinet 10. The connectionwater supply pipe 16 may have a U-trap shape so as to prevent humid air generated in progress of a drying operation from leaking to the outside. - Water supplied via the
water supply pipe 13 passes through thedetergent supply device 12 and is supplied to an inside of thetub 20 via the connectionwater supply pipe 16 together with a detergent. Awater supply valve 14 may be installed at thewater supply pipe 13 so as to control the supply of water. - Referring to
FIG. 1 , thedrum 30 may include a plurality of throughholes 27 through which washing water flows. Thedrum 30 may include a plurality oflifters 26 provided at an inner circumferential surface of thedrum 30 so that laundry can ascend or descend when thedrum 30 is rotated. - Also, as illustrated in
FIG. 1 , a drivingshaft 11 may be provided between thedrum 30 and themotor 7 so as to transfer a driving force of themotor 7 to thedrum 30. One end of the drivingshaft 11 is connected to a rear plate of thedrum 30, and the other end of the drivingshaft 11 extends from the outside of a rear wall of thetub 20. When themotor 7 is driven, thedrum 30 connected to the drivingshaft 11 rotates around the drivingshaft 11. Themotor 7 may be implemented with a universal motor including a field coil and an armature, or a brushless direct (BLDC) motor including a permanent magnet and an electric magnet. However, embodiments of the present invention are not limited thereto. - A bearing
housing 8 may be provided on a rear plate of thesecond tub 22 so as to rotatably support the drivingshaft 11. The bearinghousing 8 may be formed of an aluminum alloy and may be inserted into a rear wall of thesecond tub 22 when thesecond tub 22 is injection molded.Bearings 9 may be provided between the bearinghousing 8 and the drivingshaft 11 so that the drivingshaft 11 can be smoothly rotated. - Referring to
FIGS. 1 and2 , adrain pump 4 for discharging water inside thetub 20 to the outside of thecabinet 10 may be provided below thetub 20. Aconnection hose 3 that connects thetub 20 to thedrain pump 4 so that water inside thetub 20 can flow into thedrain pump 4, and adrain hose 5 that guides water pumped by thedrain pump 4 to the outside of thecabinet 10, may be provided. - Also, as illustrated in
FIG. 1 , a waterlevel sensing sensor 96 that senses the level of condensate water generated in progress of the drying operation may be provided at a lower side of a rear surface of thetub 20. In thewashing machine 1 with the drying apparatus according to the embodiment, when the water level sensed by the waterlevel sensing sensor 96 is equal to or higher than a predetermined reference value, condensate water is discharged. This will be described later. - A drying
apparatus 31 is installed in thetub 20 so as to dry high-temperature humid air inside thetub 20 and then to supply the air to the inside of thetub 20. The dryingapparatus 31 removes moisture of condensed air from the inside of thetub 20. - According to the embodiment, the drying
apparatus 31 includes theintake member 50 provided to intake humid air generated during the drying operation, and a dryingduct 40 that heats the air suctioned by theintake member 50 and supplies the heated air to thedrum 30, as illustrated inFIG. 3 . The dryingapparatus 31 heats air inside thetub 20 and circulates the air so that laundry inside thedrum 30 can be dried. Thus, air circulates and moves to the inside of thetub 20 and the dryingduct 40. The dryingduct 40 and theintake member 50 will now be described in more detail. - Referring to
FIG. 3 , the dryingduct 40 may include anupper plate 41 and alower plate 42. Also, the dryingduct 40 may include ahead 43 provided at an upper side of ablower fan 44. Theblower fan 44 forms a circulation flow of air so that air inside thetub 20 can flow into the dryingduct 40 and can be discharged to the inside of thetub 20 again. - The
intake member 50 on which theblower fan 44 is seated, may be provided at a lower side of the dryingduct 40. Theintake member 50 will be described later with reference toFIGS. 5 through 8 . - One side of the drying
duct 40 is coupled to afront panel 21 a that extends from one side of thefirst tub 21. The other side of the dryingduct 40 is coupled to theintake member 50, and theintake member 50 is coupled to aconnection member 71 that mediates connection to thesecond tub 22. Theconnection member 71 is coupled to a hole 25 of thesecond tub 22. Humid air generated during the drying operation is introduced into the dryingapparatus 31 via the hole 25 of thesecond tub 22 due to an intake force generated by theintake member 50, passes through the dryingduct 40 and is supplied into thedrum 30 via thefront panel 21a. - As illustrated in
FIG. 4 , when thedrum 30 is rotated and theblower fan 44 is driven during the drying operation, air inside thetub 20 is introduced into the dryingduct 40 via the hole 25 of thesecond tub 22. Air heated in the dryingduct 40 is introduced into thetub 20 via thefront panel 21a and dries the laundry. The above-described procedure is repeatedly performed so that air can circulate and move between the dryingduct 40 and thetub 20. Hereinafter, an opening of a connection member coupled to the hole 25 of thesecond tub 22 is referred to as an inlet through which air is introduced, and an opening of the dryingduct 40 coupled to thefront panel 21a of thefirst tub 21 is referred to as a discharge port through which air is discharged. - Referring to
FIG. 3 , the dryingduct 40 may include aheater 45 provided to heat air inside thereof. Also, the dryingduct 40 may include abracket 46 provided to couple theheater 45 to the dryingduct 40. - The
heater 45 may be bent several times and provided in a zigzag form, as illustrated inFIG. 3 . Theheater 45 may include a terminal portion (not shown) to which an electric wire through which current flows, is connected, a sealing member (not shown) that is mounted to be spaced apart from the terminal portion by a predetermined distance and prevents leakage of air, and a heating portion (not shown) that extends from the terminal portion. - The
bracket 46 is coupled to the outside of theupper plate 41 and thelower plate 42 so as to fix theheater 45 into the dryingduct 40. Thebracket 46 may be implemented with a material having an insulating property and high heat resistance so as to prevent heating caused by heat generated in theheater 45. According to the embodiment, thebracket 46 may be implemented with polyphenylene sulfide (PPS), polyethylene terephthalate (PET), etc. - Also, a
filter 60 may be provided in theconnection member 71 of the dryingduct 40 so as to filter dust or lint generated while laundry is dried in the progress of the drying operation. - Meanwhile, the
intake member 50 may include afront member 53 placed at a front side of theintake member 50 and arear member 52 placed at a rear side of theintake member 50.FIG. 5 is a view of theintake member 50 according to an embodiment, andFIG. 6 is an exploded view of theintake member 50 according to an embodiment.FIG. 7 is a view of theintake member 50 according to an embodiment at a different angle, andFIG. 8 is a cross-sectional view of theintake member 50 according to an embodiment. - A
seating portion 53a on which theblower fan 44 is seated, may be provided in thefront member 53. Theseating portion 53a may communicate with thetub 20, and humid air may be moved to theseating portion 53a due to driving of theblower fan 44. A slit 54 through which air outside thetub 20 is suctioned, may be provided in at least a portion of thefront member 53. A frontmember communication port 51 through which thefront member 53 communicates with thetub 20, may be formed in a lower side of thefront member 53. - An
intake port 52a through which air between thetub 20 and thecabinet 10 is suctioned, may be provided in therear member 52. Theintake port 52a may be provided in aprotrusion 52i that protrudes from therear member 52 upward. This is to prevent bubbles or washing water from overflowing outward through theintake port 52a. Also, a fixing portion may be provided in at least a portion of therear member 52 so as to fix theintake member 50 to thecabinet 10. The fixing portion may includefirst fixing portions hook 52g provided in a rear surface of therear member 52 to ahook groove 10g of thecabinet 10 and fixes theintake member 50 to thecabinet 10. Also, the fixing portion may include asecond fixing portion 52h that fixes thecabinet 10 to theintake member 50 using an additional fastening member (not shown). - The
front member 53 and therear member 52 are fastened to each other using at least one fastening portion. The fastening portion may includefirst fastening portions front member 53 to therear member 52 using ahook 52b. Also, the fastening portion may includesecond fastening portions front member 53 to therear member 52 using an additional fastening member (not shown). Thesecond fastening portions member fastening hole 53f provided in thefront member 53, and a rearmember fastening hole 52f provided in therear member 52. The shape of the rearmember fastening hole 52f corresponds to the shape of the frontmember fastening hole 53f. That is, a fastening member (not shown) is inserted into the frontmember fastening hole 53f through the rearmember fastening hole 52f so as to couple thefront member 53 to therear member 52. A flow path on which air suctioned through theintake port 52a is moved, may be provided at inner sides of thefront member 53 and therear member 52. A flow path provided at the inner side of therear member 52 is referred to as afirst flow path 52c, and a flow path provided at the inner side of thefront member 53 is referred to as asecond flow path 53c. Thefront member 53 and therear member 52 may includeinclination portions inclination portions blower fan 44 to guide movement of air. Theinclination portions FIG. 8 , an angle α at which theinclination portion 53d provided in thefront member 53 is inclined with respect to the horizontal plane is 15°, and an angle β at which theinclination portion 52d provided in therear member 52 is inclined with respect to the horizontal plane is 1°. However, embodiments of the present invention are not limited thereto. The above-describedinclination portions tub 20 from flowing backward from thetub 20 and overflowing. - As described above, the
intake member 50 includes a flow path on which air may be moved, thereby suctioning air between thecabinet 10 and thetub 20. The dryingapparatus 31 according to the embodiment may dry laundry using such air so that a drying time can be reduced. - When the
blower fan 44 is driven during the drying operation, high-temperature humid air inside thetub 20 may be introduced via the inlet, and low-temperature low-humidity air inside thewashing machine 1 with the drying apparatus may be simultaneously suctioned via theintake port 52a of theintake member 50 so that air condensation can be performed in the dryingduct 40. - Also, heated air supplied to the
drum 30 may absorb moisture from the laundry accommodated in thedrum 30 and then may be condensed by the surface of the inside of thetub 20. After humid air is introduced into the dryingapparatus 31, condensate water is supplied from a sub-drain pipe so that condensation of humid air can be performed. Condensate water generated through the above-described condensation procedure is stored in a lower portion of thetub 20. Drainage of condensate water stored in the lower portion of thetub 20 will be described later. - As described above, the drying
apparatus 31 including the dryingduct 40 is provided at a right upper portion of thetub 20. That is, the dryingapparatus 31 is provided in a direction of approximately 1 o'clock (not 12 o'clock) when viewing thewashing machine 1 with the drying apparatus from the front. Because the dryingapparatus 31 is slightly inclined in the direction of 1 o'clock, interference between the laundry and the inlet of the dryingapparatus 31 may occur according to a rotation direction of thedrum 30. That is, the laundry closes the inlet so that the efficiency of air circulation for drying the laundry is decreased and drying efficiency can be decreased. In thewashing machine 1 with the drying apparatus according to the embodiment, the frequency of interference between the laundry and the inlet is decreased so that drying efficiency can be improved and a drying time can be reduced. Hereinafter, thewashing machine 1 with the drying apparatus according to the embodiment that is capable of decreasing the frequency of interference between the inlet and the laundry will be described in detail with reference toFIGS. 9 through 12 . -
FIG. 9 is a control configuration view of thewashing machine 1 with the drying apparatus according to an embodiment of the present invention. Referring toFIG. 9 , thewashing machine 1 with the drying apparatus according to the embodiment further includes aninput unit 100, acontrol unit 110, amemory 120, and adisplay unit 140. - The
input unit 100 is provided so that instructions for performing a washing operation, a rinsing operation, a dehydration operation and a drying operation of thewashing machine 1 with the drying apparatus can be inputted to thewashing machine 1 with the drying apparatus through theinput unit 100. - Also, the
input unit 100 may include a variety of buttons disposed on a control panel so that operating information such as a drying course (for example, normal, towels, perm, delicates, etc.), a drying time, operating instructions, etc., which are selected by a user, can be inputted to thewashing machine 1 with the drying apparatus through the buttons. - Also, the
input unit 100 may include a jog dial provided to select a drying state (for example, half-drying, full drying, etc.) as well as the buttons. - The
input unit 100 is not limited to the above-described example and may include various devices provided to input instructions due to an operation such as press, contact, pressure, rotation, etc. - The
display unit 140 may display the operating state of thewashing machine 1 with the drying apparatus according to a display control signal of thecontrol unit 110. Also, thedisplay unit 140 may be provided so that a touch gesture can be inputted to thedisplay unit 140, thereby receiving instructions according to the user's touch gesture and displaying an operating state corresponding to the instructions. - Also, the
display unit 140 may provide a liquid crystal display (LCD) user interface (Ul) on which a text can be written, thereby displaying the operating state of thewashing machine 1 with the drying apparatus with the text. Also, thedisplay unit 140 may provide a light-emitting diode (LED) UI so that the user can recognize the abnormal state of thewashing machine 1 with the drying apparatus using lighting or flickering, or a lighting duration time difference. - The
memory 120 may store various control data for controlling the operation of thewashing machine 1 with the drying apparatus, usage information including the number of times at which thewashing machine 1 with the drying apparatus performs a particular operation, model information of thewashing machine 1 with the drying apparatus, and failure information including the cause of malfunction or the position of malfunction when malfunction of thewashing machine 1 with the drying apparatus occurs. Also, in regard to the drying operation, data about a rotation time according to the rotation direction of thedrum 30 can be stored. - The
control unit 110 may include a microprocessor for controlling the overall operation of thewashing machine 1 with the drying apparatus such as the washing operation, the rinsing operation, the dehydration operation, and the drying operation according to operation information inputted by theinput unit 100. - The
control unit 110 may set a washing and rinsing quantity, a dehydration revolution per minute (RPM), a motor operation rate (motor on-off time), and a washing and dehydration time according to the weight (load quantity) of laundry in a selected washing course. - When the drying operation is performed, the
control unit 110 of thewashing machine 1 with the drying apparatus according to the embodiment controls the dryingapparatus 31 so that heated air can be supplied to the laundry accommodated in thedrum 30, and drives themotor 7 so that the laundry accommodated in thedrum 30 can flow, to rotate thedrum 30. Thecontrol unit 110 rotates thedrum 30 alternately in a clockwise direction and a counterclockwise direction, respectively. Clockwise and counterclockwise directions that are rotation directions of thedrum 30 are defined as clockwise and counterclockwise directions when thedrum 30 is viewed from the front of thewashing machine 1 with the drying apparatus. - As described above, because the inlet of the drying
apparatus 31 is provided in a position corresponding to the direction of approximately 1 o'clock, when thedrum 30 is rotated in the counterclockwise direction, interference between the laundry and the inlet may occur. That is, when thedrum 30 is rotated in the counterclockwise direction, the laundry is rotated in the counterclockwise direction together with thedrum 30 and descends in a direction of approximately 12 o'clock so that interference between the laundry and the inlet occurs continuously while thedrum 30 is rotated in the counterclockwise direction. - Thus, the
control unit 110 of thewashing machine 1 with the drying apparatus according to the embodiment controls rotation of thedrum 30 so that, while the drying operation is performed, thedrum 30 is rotated alternately in the clockwise direction and the counterclockwise direction, respectively, and a clockwise rotation time (hereinafter, referred to as a first time) is longer than a counterclockwise rotation time (hereinafter, referred to as a second time). - For example, when the drying operation is performed, the
control unit 110 may perform repeatedly an operation of rotating thedrum 30 in the clockwise direction for 600 seconds and then rotating thedrum 30 in the counterclockwise direction for 60 seconds. The above-described rotation time of thedrum 30 is just an example, and the case where the first time that is the clockwise rotation time is longer than the second time that is the counterclockwise rotation time, may be included in the embodiment. - As described above, when the
drum 30 is rotated in the clockwise direction longer than in the counterclockwise direction, the effects of the flow of the laundry and tangle prevention of the laundry can be maintained, and the frequency of interference between the inlet and the laundry is decreased so that drying efficiency can be improved. - Also, the
control unit 110 of thewashing machine 1 with the drying apparatus according to the embodiment may control a difference between the above-described first time and second time according to the weight of the laundry. Thecontrol unit 110 rotates thedrum 30 for the predetermined first time and second time when the weight of the laundry is included in a predetermined reference range. For example, the first time may be 600 seconds, and the second time may be 60 seconds. - When the weight of the laundry is not included in the above-described reference range and is smaller than a minimum value in the reference range, the difference between the first time and the second time can be decreased. When the weight of the laundry is smaller than the minimum value in the reference range, the quantity of the laundry may be smaller than in the case where the weight of the laundry is included in the reference range or is larger than a maximum value in the reference range. Thus, the frequency of interference between the laundry and the inlet can be decreased.
- Thus, the second time that is the counterclockwise rotation time is increased, and the first time that is the clockwise rotation time is reduced by an increment so that, even when the difference between the first time and the second time is decreased, the above-described effects according to the embodiment can be achieved. In another example, the
control unit 110 may increase only the second time in a state in which the first time is not changed. - When the weight of the laundry is not included in the above-described reference range and is larger than the maximum value in the reference range, the
control unit 110 may increase the difference between the first time and the second time. When the weight of the laundry is larger than the maximum value in the reference range, the quantity of the laundry may be larger than in the case where the weight of the laundry is included in the reference range or is smaller than the minimum value in the reference range. Thus, the frequency of interference between the laundry and the inlet can be increased. - Thus, in order to achieve the above-described effects according to the embodiment, the second time that is the counterclockwise rotation time may be reduced, and the first time that is the clockwise rotation time may be increased by a reduction. In another example, the
control unit 110 may also decrease only the second time in a state in which the first time is not changed. - When the drying operation is performed, the
memory 120 may store data of the rotation time according to each rotation direction of thedrum 30 in advance. Also, as described above, thememory 120 may store data of the rotation time in each rotation direction of thedrum 30 according to the weight of the laundry in advance. - The
washing machine 1 with the drying apparatus according to the embodiment condenses moisture included in humid air generated during the drying operation and removes moisture, heats air from which moisture is removed, supplies the heated air to thedrum 30, thereby drying the laundry. In order to condense moisture of the humid air, thewashing machine 1 with the drying apparatus according to the embodiment supplies condensate water to the dryingapparatus 31 and removes moisture included in humid air. Supply and drainage of condensate water in thewashing machine 1 with the drying apparatus according to the embodiment will now be described in detail. - When the drying operation starts being performed, the
control unit 110 drives themotor 7 to rotate thedrum 30, thereby rotating the laundry inside thedrum 30. Also, thecontrol unit 110 drives theblower fan 44 so that air flows inside thedrum 30. - The
control unit 110 drives theheater 45 so as to heat air introduced into the dryingapparatus 31 due to driving of theblower fan 44. Air heated by theheater 45 is introduced into thedrum 30 via the dryingduct 40. Hot air introduced into thedrum 30 takes moisture from the laundry that repeatedly ascends or descends inside thedrum 30 and is rotated so that the laundry can be dried. - When the
blower fan 44 is driven during the drying operation, the high-temperature humid air inside thetub 20 is introduced into the dryingduct 40 via the inlet, and low-temperature low-humidity air inside thewashing machine 1 with the drying apparatus is also introduced into the dryingduct 40 via theintake port 52a of theintake member 50. Thus, in the dryingduct 40, the high-temperature humid air and the low-temperature low-humidity air are mixed with each other so that condensation is performed. The condensed air passes through theheater 45 and thedrum 30, takes moisture from the laundry and is condensed in thetub 20. - Also, when air temperature inside the drying
duct 40 reaches a predetermined set temperature, thecontrol unit 110 allows condensate water to be supplied to the dryingapparatus 31 so that moisture can be condensed through heat-exchanging of humid air introduced via the inlet of the dryingapparatus 31 and condensate water. Thecontrol unit 110 operates thewater supply valve 14 so that condensate water can be supplied to the dryingapparatus 31 via thesub-water supply pipe 15. A temperature sensor that senses the temperature of air may be provided inside the dryingduct 40. - As described above, when moisture of humid air is condensed due to the supply of condensate water, condensate water is stored in the lower portion of the
tub 20. In thewashing machine 1 with the drying apparatus according to the embodiment, when condensate water is stored in the lower portion of thetub 20, condensate water is not directly drained, and when the level of condensate water reaches a predetermined level or a predetermined time has elapsed after the supply of condensate water, drainage is performed. - The temperature of condensate water stored in the
tub 20 and temperature of the inside of thedrum 30 are different from each other, and this temperature difference may improve condensation efficiency of humid air. Thus, in thewashing machine 1 with the drying apparatus according to the embodiment, drainage is not directly performed together with the supply of condensate water but condensate water is stored until the condensate water reaches the predetermined level or until a predetermined time has elapsed after the supply of condensate water so that condensation efficiency can be improved. - When, as a result of sensing of the water
level sensing sensor 96 disposed at the lower portion of thetub 20, condensate water reaches a predetermined level or a predetermined time has elapsed after the supply of condensate water, thecontrol unit 110 operates thedrain pump 4 to drain the condensate water. When a predetermined driving time of thedrain pump 4 has elapsed, thecontrol unit 110 stops the operation of thedrain pump 4. The water level or time for drainage of condensate water may be determined in advance so that condensate water is not introduced into thedrum 30 and thus may be stored in thememory 120. Thecontrol unit 110 performs the above-described supply and drainage operations of condensate water repeatedly in progress of the drying operation. - In the
washing machine 1 with the drying apparatus according to the embodiment, as described above, the clockwise rotation time of thedrum 30 is controlled longer than the counterclockwise rotation time of thedrum 30, and drainage of condensate water is performed in consideration of the level of condensate water or an elapsed time after the supply of condensate water so that a drying time can be reduced and furthermore, drying efficiency can be improved. -
FIGS. 10 through 12 are flowcharts illustrating a method of controlling thewashing machine 1 with the drying apparatus according to an embodiment. A method of controlling rotation of thedrum 30 in progress of a drying operation will be described with reference toFIG. 10 , and a method of controlling drainage of condensate water in progress of the drying operation will be described with reference toFIGS. 11 and12 . - Referring to
FIG. 10 , when the drying operation is performed (800), thecontrol unit 110 of thewashing machine 1 with the drying apparatus according to the embodiment rotates thedrum 30 in the clockwise direction for a first time (810), and when the first time has elapsed, thecontrol unit 110 of thewashing machine 1 with the drying apparatus rotates thedrum 30 in the counterclockwise direction for a second time that is shorter than the first time (820). - When the drying operation is performed, the
control unit 110 of thewashing machine 1 with the drying apparatus according to the embodiment controls the dryingapparatus 31 so that heated air can be supplied to the laundry accommodated in thedrum 30, drives themotor 7 so that the laundry accommodated in thedrum 30 can flow, to rotate thedrum 30. Thecontrol unit 110 rotates thedrum 30 alternately in the clockwise direction and the counterclockwise direction, respectively. - While the drying operation is performed, the
control unit 110 of thewashing machine 1 with the drying apparatus according to the embodiment rotates thedrum 30 alternately in the clockwise direction and the counterclockwise direction, respectively, and controls rotation of thedrum 30 so that the first time that is the clockwise rotation time is longer than the second time that is the counterclockwise rotation time. - For example, when the drying operation is performed, the
control unit 110 may perform repeatedly an operation of rotating thedrum 30 in the clockwise direction for 600 seconds and then rotating thedrum 30 in the counterclockwise direction for 60 seconds. As described above, when thedrum 30 is rotated in the clockwise direction longer than in the counterclockwise direction, the effects of flow of the laundry and tangle prevention of the laundry can be maintained, and the frequency of interference between the inlet and the laundry is decreased so that drying efficiency can be improved. - When the drying operation is completed (830), the
control unit 110 performs a cooling operation (840). When the cooling operation is performed, thecontrol unit 110 rotates thedrum 30 in the clockwise direction for a third time (850), and when the third time has elapsed, thecontrol unit 110 rotates thedrum 30 in the counterclockwise direction for the third time (860). Thecontrol unit 110 finishes the cooling operation when a time for the cooling operation has elapsed (870). - When the drying operation is finished, the
control unit 110 stops theheater 45 and drives themotor 7 and theblower fan 44 to perform the cooling operation. The cooling operation is an operation of stopping theheater 45 and periodically turning on/off theblower fan 44. This is to prevent the user from being exposed to high-temperature air excessively discharged from thedoor 2 when thedoor 2 is open after the drying operation of thewashing machine 1 with the drying apparatus is finished. - The
control unit 110 rotates thedrum 30 alternately in the clockwise direction and the counterclockwise direction, respectively, while the cooling operation is performed. Thecontrol unit 110 controls themotor 7 so that the clockwise rotation time and the counterclockwise rotation time are the same, unlike when the drying operation is performed. That is, thecontrol unit 110 controls themotor 7 so that an operation of rotating thedrum 30 in the clockwise direction for the third time that is shorter than the second time, for example, for 10 seconds while the cooling operation is performed, and when 10 seconds have elapsed, rotating thedrum 30 in the counterclockwise direction for 10 seconds can be repeatedly performed. Thecontrol unit 110 finishes the cooling operation when a predetermined time for the cooling operation has elapsed. - Referring to
FIG. 11 , thecontrol unit 110 of thewashing machine 1 with the drying apparatus according to the embodiment starts the supply of condensate water (920) when a drying operation is performed (900) and temperature of the dryingapparatus 31 reaches a set temperature for the supply of condensate water (910). - When temperature of air inside the drying
duct 40 reaches a predetermined temperature, thecontrol unit 110 allows condensate water to be supplied to the dryingapparatus 31 so that moisture can be condensed through heat-exchanging of humid air introduced through the inlet of the dryingapparatus 31 and condensate water. Thecontrol unit 110 operates thewater supply valve 14 so that condensate water can be supplied to the dryingapparatus 31 via thesub-water supply pipe 15. - When a predetermined time has elapsed after condensate water is supplied (930), the
control unit 110 operates thedrain pump 4 so that condensate water stored in thetub 20 can be discharged (940). As described above, when moisture of humid air is condensed due to the supply of condensate water, condensate water is stored in the lower portion of thetub 20. In thewashing machine 1 with the drying apparatus according to the embodiment, when condensate water is stored in the lower portion of thetub 20, condensate water is not directly discharged, and when a predetermined time has elapsed after the supply of condensate water, drainage is performed. - The temperature of condensate water stored in the
tub 20 and the temperature inside thedrum 30 are different from each other, and this temperature difference may improve condensation efficiency of humid air. Thus, in thewashing machine 1 with the drying apparatus according to the embodiment, drainage is not directly performed together with the supply of condensate water, and condensate water is stored until a predetermined time after the supply of condensate water has elapsed, so that condensation efficiency can be improved. - When the predetermined time after the supply of condensate water has elapsed, the
control unit 110 operates thedrain pump 4 to drain condensate water. Thecontrol unit 110 stops the operation of thedrain pump 4 when a predetermined driving time of thedrain pump 4 has elapsed. - Referring to
FIG. 12 , when the drying operation is performed (950) and the temperature of the dryingapparatus 31 reaches a set temperature for the supply of condensate water (960), thecontrol unit 110 of thewashing machine 1 with the drying apparatus according to the embodiment starts the supply of condensate water (970). When the level of condensate water reaches a predetermined level (980), thecontrol unit 110 operates thedrain pump 4 so that condensate water stored in thetub 20 can be discharged (990).Operations 950 to 970 and 990 ofFIG. 12 are the same asOperations 900 to 920 and 940 ofFIG. 11 and thus, descriptions thereof will be omitted, andOperation 980 has been described. - As described above, when moisture of humid air is condensed due to the supply of condensate water, condensate water is stored in the lower portion of the
tub 20. In thewashing machine 1 with the drying apparatus according to the embodiment, when condensate water is stored in the lower portion of thetub 20, the condensate water is not directly discharged, and when the level of condensate water reaches a predetermined level, drainage is performed. When, as a result of sensing of the waterlevel sensing sensor 96 provided at the lower portion of thetub 20, condensate water reaches a predetermined level, thecontrol unit 110 operates thedrain pump 4 to discharge the condensate water. When a predetermined driving time of thedrain pump 4 has elapsed, thecontrol unit 110 stops the operation of thedrain pump 4. - In a washing machine with a drying apparatus according to an embodiment of the present invention, the frequency of interference between an inlet of the drying apparatus and laundry is decreased so that the degree of drying of the laundry can be improved.
- In addition, in the washing machine with the drying apparatus according to an embodiment of the present invention, a drying time can be reduced at the same drying temperature.
Claims (11)
- A washing machine (1) with a drying apparatus (31), comprising:a tub (20);a drum (30) rotatably provided inside the tub (20) to rotate around a horizontal driving shaft (11);a drying apparatus (31) provided at an upper portion of the tub (20), configured to introduce air from the tub (20), to heat the introduced air and to supply the heated air to the drum so that laundry accommodated in the drum (30) is dried; anda control unit (110) configured to rotate the drum (30) alternately in a clockwise direction and a counterclockwise direction, respectively, to rotate the drum (30) in the clockwise direction for a first time and to rotate the drum (30) in the counterclockwise direction for a second time that is shorter than the first time when the washing machine with the drying apparatus enters a drying operation, characterized in that,the control unit (110) is configured to decrease a difference between the first time and the second time, when a weight of the laundry is smaller than a minimum value in a predetermined reference range, and/orto increase a difference between the first time and the second time when a weight of the laundry is larger than a maximum value in a predetermined reference range,wherein the drying apparatus (31) comprises an inlet (50), which is provided at a right upper portion of the tub (20) and through which air is introduced from the tub (20).
- The washing machine (1) with the drying apparatus (31) according to claim 1, wherein the drying apparatus (31) comprises a discharge port through which heated air is supplied to the drum (30).
- The washing machine (1) with the drying apparatus (31) according to claim 1, wherein the control unit (110) rotates the drum (30) in the clockwise direction for the first time and in the counterclockwise direction for the second time that is shorter than the first time so that interference between the inlet (50) and the laundry accommodated in the drum (30) is prevented.
- The washing machine (1) with the drying apparatus (31) according to claim 1, wherein the control unit (110) decreases the first time or increases the second time so that the difference between the first time and the second time is decreased.
- The washing machine (1) with the drying apparatus (31) according to claim 1, wherein the control unit (110) increases the first time or decreases the second time so that the difference between the first time and the second time is increased.
- The washing machine (1) with the drying apparatus (31) according to claim 1, wherein, when the drying operation is finished, the control unit (110) controls rotation of the drum (30) so that the drum (30) is rotated alternately in the clockwise direction and the counterclockwise direction, respectively, and a clockwise rotation time and a counterclockwise rotation time are the same.
- The washing machine (1) with the drying apparatus (31) according to claim 1, wherein, when the drying operation is finished, the control unit (110) rotates the drum (30) alternately in the clockwise direction and the counterclockwise direction, respectively, for a third time that is shorter than the second time.
- A method of controlling a washing machine (1) with a drying apparatus (31), the method comprising:when the washing machine (1) with the drying apparatus (31) enters a drying operation, heating air introduced from a tub using the drying apparatus (31) and supplying the heated air to a drum (30), the drum (30) rotatably provided inside the tub (20) to rotate around a horizontal driving shaft (11); andwhile the drying operation is performed, alternately rotating the drum in a clockwise direction for a first time and rotating the drum (30) in a counterclockwise direction for a second time that is shorter than the first time,wherein, while the drying operation is performed, the rotating of the drum in the clockwise direction for the first time and the rotating of the drum in the counterclockwise direction for the second time that is shorter than the first time comprises:determining whether a weight of laundry accommodated in the drum is included in a predetermined reference range; andwhen the weight of the laundry is smaller than a minimum value in the reference range, decreasing a difference between the first time and the second time, and/orwhen the weight of the laundry is larger than a maximum value in the reference range, increasing the difference between the first time and the second time,wherein the drying apparatus (31) comprises an inlet (50), which is provided at a right upper portion of the tub (20) and through which air is introduced from the tub (20).
- The method according to claim 8, wherein, while the drying operation is performed, the rotating of the drum in the clockwise direction for the first time and the rotating of the drum (30) in the counterclockwise direction for the second time that is shorter than the first time comprises rotating the drum in the clockwise direction for the first time and rotating the drum in the counterclockwise direction for the second time that is shorter than the first time so that interference between an inlet of the drying apparatus (31) and laundry accommodated in the drum (30) is prevented.
- The method according to claim 8, further comprising, when the drying operation is finished, rotating the drum alternately in the clockwise direction and the counterclockwise direction, respectively so that a clockwise rotation time and a counterclockwise rotation time are the same.
- The method according to claim 8, further comprising, when the drying operation is finished, rotating the drum alternately in the clockwise direction and the counterclockwise direction, respectively, for a third time that is shorter than the second time.
Applications Claiming Priority (1)
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KR1020160119175A KR102627706B1 (en) | 2016-09-19 | 2016-09-19 | Washing machine with drying apparatus and method to control thereof |
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EP3296452A1 EP3296452A1 (en) | 2018-03-21 |
EP3296452B1 true EP3296452B1 (en) | 2020-05-27 |
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KR (1) | KR102627706B1 (en) |
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KR102615527B1 (en) * | 2018-06-20 | 2023-12-19 | 삼성전자주식회사 | Dryer and drying method thereof |
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DE4032079C2 (en) * | 1990-10-10 | 1999-03-04 | Aeg Hausgeraete Gmbh | Process for drying laundry in a program-controlled drum dryer |
JP2007167263A (en) * | 2005-12-21 | 2007-07-05 | Sanyo Electric Co Ltd | Drum-type washing machine |
JP4812719B2 (en) * | 2007-09-25 | 2011-11-09 | 日立アプライアンス株式会社 | Dryer and washing dryer |
JP5452425B2 (en) * | 2010-08-31 | 2014-03-26 | 日立アプライアンス株式会社 | Drum type washer / dryer |
EP2392725A3 (en) * | 2011-09-12 | 2012-04-25 | V-Zug AG | Washer dryer with reversible operation |
KR20140018583A (en) * | 2012-08-02 | 2014-02-13 | 삼성전자주식회사 | Washing apparatus and controlling method thereof |
-
2016
- 2016-09-19 KR KR1020160119175A patent/KR102627706B1/en active IP Right Grant
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EP3296452A1 (en) | 2018-03-21 |
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