KR20210122022A - Laundry Treatment Apparatus and Control Method for the same - Google Patents

Abstract

The present application relates to a control method of a clothes treatment apparatus, comprising: a washing machine power supply step of supplying a power to a washing machine interface provided to receive a control command; a course execution step in which a washing machine executes a washing course when the washing course is input to the washing machine interface; a dryer power supply step of supplying the power to a dryer when a preheating request signal is input through the washing machine interface; and a preheating step having a supply cycle of supplying an air to a drying drum and a heating cycle of heating the air supplied to the drying drum. An object of the present invention is to provide the clothes treatment apparatus capable of minimizing a consumption amount of a standby power and the control method of the clothes treatment apparatus.

Description

{Laundry Treatment Apparatus and Control Method for the same}

The present application relates to a laundry treatment apparatus and a method for controlling the laundry treatment apparatus.

A laundry treatment apparatus is a generic term for an apparatus for washing clothes, an apparatus for drying clothes, and an apparatus capable of both washing and drying clothes.

Among the conventional clothes treatment apparatuses, there are a dryer for drying clothes, a washing machine for washing clothes, and a shelf in which any one of the dryer and the washing machine is provided with a space above the other. A laundry treatment apparatus that maintains a state in which a dryer or a washing machine is stacked on the shelf in the vertical direction has an advantage in that clothes that have been washed can be easily transferred from the washing machine to the dryer.

However, the above-described conventional laundry treatment apparatus has a disadvantage in that one apparatus cannot control the other apparatus because the control unit provided in the dryer and the control unit provided in the washing machine operate by circuits independent of each other. Accordingly, there is a disadvantage in that the user must directly proceed with the process of supplying power to the other device and inputting the control command when the operation of one of the washing machine and the dryer is completed.

An object of the present application is to provide a laundry treatment apparatus capable of minimizing the consumption of standby power and a method for controlling the laundry treatment apparatus.

Another object of the present application is to provide a laundry treatment apparatus and a method for controlling the laundry treatment apparatus, in which one of two treatment apparatuses capable of washing or drying clothes can control the other treatment apparatus.

The present application relates to a washing machine equipped with a tub for storing water and a washing drum provided inside the tub to store clothes, and a drying drum for storing clothes and a supply unit for removing moisture from clothes by supplying air to the drying drum Provided is a method for controlling a laundry treatment apparatus including a dryer provided therein.

The method of controlling the laundry treatment apparatus includes: a washing machine power supply step of supplying power to a washing machine interface provided to receive a control command; a course execution step in which the washing machine executes the washing course when a washing course is input to the washing machine interface; a dryer power supply step of supplying power to the dryer when a preheating request signal is input through the washing machine interface; and a preheating step having a supply cycle of supplying air to the drying drum and a heating cycle of heating the air supplied to the drying drum.

The method of controlling the laundry treatment apparatus may further include activating a display of the dryer when the preheating request signal is received.

The step of supplying power to the dryer may include activating a dryer display; and supplying power to the supply unit.

The control method of the laundry treatment apparatus may further include a communication step of transmitting, by the washing machine, the preheating request signal to the dryer when the preheating request signal is input through the washing machine interface.

The dryer power supply step may be started when the remaining time until the course execution step ends is less than or equal to a preset reference time.

The course execution step includes a water supply operation for supplying water to the tub, a foreign matter removal operation for rotating the washing drum, a drainage operation for discharging the water from the tub to the outside of the tub, and a water supply operation for rotating the washing drum to remove water from clothes The dehydration cycle may be sequentially performed, and the reference time may be set to be less than or equal to the remaining time from the completion of the draining cycle to the completion of the dewatering cycle.

The course execution step includes a water supply operation for supplying water to the tub, a foreign matter removal operation for rotating the washing drum, a drainage operation for discharging the water from the tub to the outside of the tub, and a water supply operation for rotating the washing drum to remove water from clothes The dehydration cycle may be sequentially performed, and the reference time may be set to be less than or equal to the remaining time from the start of the dehydration cycle to the end of the dehydration cycle.

The method of controlling the laundry treatment apparatus further includes a measuring step of measuring a temperature of the air discharged from the drying drum during the preheating step, wherein the preheating step includes a reference temperature at which the temperature measured in the measuring step is preset. If higher, the heating cycle can be stopped.

When the temperature measured in the measuring step is equal to or less than the reference temperature, the preheating step may restart the heating cycle.

When the washing machine notifies the dryer of the end of the spin-drying cycle, the preheating step may be ended.

The heating cycle may operate only some of the heaters provided in the supply unit to heat the air.

The supply unit includes a duct for re-supplying the air discharged from the drying drum to the drying drum, a refrigerant passage forming a passage through which the refrigerant circulates, a compressor for allowing the refrigerant to circulate along the refrigerant passage, and the duct in the drying drum and a heat absorbing part that transfers heat of the air introduced into the furnace to the refrigerant, and a heat absorbing part that transfers the heat of the refrigerant to the air that has passed through the heat absorbing part, and is discharged from the drying drum measured during the preheating step. When the temperature of the used air is less than a preset first reference temperature, the compressor may be controlled to increase the flow rate of the refrigerant.

If the temperature of the air discharged from the drying drum measured during the preheating step is higher than the first reference temperature and less than or equal to the second reference temperature set to a temperature higher than the first reference temperature, the flow rate of the refrigerant is maintained. You can control the compressor.

When the temperature of the air discharged from the drying drum is higher than the second reference temperature during the preheating step, the compressor may be controlled to decrease the flow rate of the refrigerant.

The present application relates to a washing standby mode step of supplying power to a washing machine driving unit, a washing machine first control unit controlling the washing machine driving unit, and a washing machine interface without supplying power to the washing machine interface and supplying power to a washing machine second control unit controlling the washing machine interface; a drying standby mode step of supplying power to the dryer driver, the dryer first controller controlling the dryer driver, and the dryer interface without supplying power, but supplying power to the dryer second controller controlling the dryer interface; a washing machine power supply step of supplying power to the washing machine driving unit, the washing machine first control unit, and the washing machine interface; a course execution step of controlling the washing machine driving unit to execute the washing course when a washing course is input through the washing machine interface; a communication step of transmitting, by the washing machine second control unit, the preheating request signal to the dryer second control unit, when the preheating request signal input through the washing machine interface is input; a dryer power supply step of supplying power to the dryer driving unit when the second dryer control unit receives the preheating request signal; and a preheating step including a supply cycle of supplying air to the drying drum and a heating cycle of heating the air supplied to the drying drum by controlling the dryer driving unit.

The dryer power supply step may be started when the remaining time until the course execution step ends is less than or equal to a preset reference time.

The course execution step includes a water supply process for supplying water to the tub, a foreign matter removal process for rotating a laundry drum provided inside the tub and storing clothes, a drainage process for discharging water from the tub, and a washing drum to rotate the laundry for clothes A dehydration cycle for removing water from the water may be sequentially performed, and the reference time may be set as a time point between the completion time of the draining cycle and the completion of the dehydration cycle.

The course execution step includes a water supply process for supplying water to the tub, a foreign matter removal process for rotating a laundry drum provided inside the tub and storing clothes, a drainage process for discharging water from the tub, and a washing drum to rotate the laundry for clothes The dehydration cycle to remove water from the water is sequentially performed, and the reference time may be set as a time point between the start time of the dehydration cycle and the end time of the dehydration cycle.

The reference time may be set to be less than or equal to a time remaining from the completion of the draining cycle to the completion of the dewatering cycle.

The control method further includes a measuring step of measuring the temperature of the air discharged from the drying drum during the preheating step, wherein the preheating step is performed when the temperature measured in the measuring step is higher than a preset reference temperature. administration may be suspended.

When the temperature measured in the measuring step is equal to or less than the reference temperature, the preheating step may restart the heating cycle.

When the second control unit of the washing machine notifies the second control unit of the dryer that the spin-drying cycle is terminated, the preheating step may be terminated.

The heating cycle may operate only some of the heaters provided to heat the air supplied to the drying drum.

The heating process includes a heat absorbing part for dehumidifying the air discharged from the drying drum, a heating part for heating the air that has passed through the heat absorbing part, and a refrigerant passage through which the refrigerant circulates between the heat absorbing part and the heat generating part and a compressor. can proceed.

The control method further includes a measuring step of measuring the temperature of the air discharged from the drying drum during the preheating step, and if the temperature measured in the measuring step is less than a preset first reference temperature, the dryer The first controller may control the compressor to increase the flow rate of the refrigerant.

When the temperature measured in the measuring step is higher than the first reference temperature and less than or equal to a second reference temperature set to a temperature higher than the first reference temperature, the dryer first control unit controls the compressor to maintain the flow rate of the refrigerant. can

When the temperature measured in the measuring step is higher than the second reference temperature, the first control unit of the dryer may control the compressor to decrease the flow rate of the refrigerant.

In the present application, power is not supplied to the first control unit controlling the washing machine driving unit, the washing machine interface, the dryer driving unit, the dryer interface, the washing machine driving unit, and the dryer driving unit, and power is supplied to the second control unit controlling the washing machine interface and the dryer interface. A standby mode step of supplying; a washing machine power supply step of supplying power to the washing machine interface; a course execution step of executing the washing course by controlling the washing machine driving unit when a washing course is input through the washing machine interface; a dryer power supply step of supplying power to the dryer driving unit when a preheating request signal is input through the washing machine interface; and a preheating step including a supply cycle of supplying air to the drying drum through the dryer driving unit and a heating cycle of heating the air supplied to the drying drum.

The dryer power supply step may be started when the remaining time until the course execution step ends is less than or equal to a preset reference time.

The present application has the effect of providing a laundry treatment apparatus capable of minimizing the consumption of standby power and a control method of the laundry treatment apparatus.

In addition, the present application has an effect of providing a laundry treatment apparatus and a method of controlling the laundry treatment apparatus in which one of two treatment apparatuses capable of washing or drying clothes can control the other treatment apparatus.

1 illustrates an example of a laundry treatment apparatus.
2 and 3 show another embodiment of the laundry treatment apparatus.
4 illustrates an example of a control panel, a washing machine driving unit, a dryer driving unit, a washing machine interface, and a dryer interface provided in the laundry treatment apparatus.
5 is a diagram illustrating an example of a control method of the laundry treatment apparatus.
6 is a diagram illustrating another embodiment of a method for controlling a laundry treatment apparatus.

Hereinafter, a preferred embodiment of a laundry treatment apparatus and a control method thereof will be described in detail with reference to the accompanying drawings. The configuration or control method of the apparatus to be described below is only for explaining examples of the laundry treatment apparatus and the control method thereof, and is not intended to limit the scope of the invention, and the same reference numbers used throughout the specification indicate the same configuration represent elements.

As shown in FIG. 1 , the laundry treatment apparatus 100 includes a dryer (first treatment device, T) for drying clothes, and a washing machine that is provided to support the bottom surface of the dryer to wash or dry clothes ( It may be provided to include a second processing device, L). 1 , the laundry treatment apparatus 100 may be provided such that the dryer T supports the bottom surface of the washing machine L.

The dryer (T) is a first cabinet (1), a drying drum (2) rotatably provided inside the first cabinet to provide a space for storing clothes, and air heated into the drying drum (2). It includes a supply unit (4) for supplying.

The first cabinet 1 includes a front panel 11 (a first front panel) forming a front surface of the dryer, a rear panel 12 (a first rear panel) forming a rear surface of the dryer, and an upper portion of the dryer. It may be provided to include an upper panel forming a surface, and a base panel seated on the upper surface of the washing machine (L).

The first front panel 11 is provided with a first inlet 111 provided to communicate with the drying drum 2, and the first inlet 111 is a door 15 rotatably coupled to the first cabinet. , the first door) may be provided to open and close.

The drying drum 2 may be provided with a cylindrical drum body 21 having an open front surface and a rear surface, respectively. In this case, inside the first cabinet 1 , a front support part 22 rotatably supports the front surface of the drum body 21 , and a rear support part 22 rotatably supports the rear surface of the drum body 21 . A support 24 may be provided.

The front support part 22 is provided to penetrate the first fixed body fixed inside the first cabinet 1 and the first fixed body to communicate the first inlet 111 and the inside of the drum body 21 . It may be provided to include a drying drum inlet 225 , a first support body 221 provided on the first fixed body and inserted into the front surface of the drum body 21 .

The first fixed body may have any shape as long as the drying drum inlet 225 and the first support body 221 can be provided. The first support body 221 may be provided in the shape of a pipe protruding from the first fixed body toward the drum body 21 .

The front support part 22 may be provided to be connected to the first inlet 111 through the connection body 223 . The connection body 223 may be provided in a cylindrical shape surrounding the first inlet 111 . In this case, the drying drum inlet 225 may be provided as a through hole connected to the first inlet 111 through the connection body 223 .

The connection body 223 may be provided with an outlet communicating with the supply unit (4). The outlet may be provided with a hole provided to pass through the connection body 223 , and a filter 227 may be detachably inserted into the outlet. The air inside the drum body 21 is movable to the supply unit 4 through the outlet and the filter 227 , and foreign substances contained in the air will be filtered out by the filter 227 in this process.

The rear support part 24 includes a second fixed body fixed inside the first cabinet 1 , and a second support body 241 provided on the second fixed body and inserted into the rear surface of the drum body 21 . It may be provided to include. The rear support part 24 is provided with a supply port 243 which is provided to pass through the second fixed body and guides the air supplied from the supply part 4 to the drum body 21 .

A lifter 213 for stirring the clothes may be provided on the circumferential surface of the drum body 21 . The lifter 213 may be provided as a board protruding from the circumferential surface of the drum body 21 toward the center of rotation of the drum body.

The drum body 21 is rotated by a drying drum driving unit 3, which is driven by a drying drum motor 31 fixed inside the first cabinet 1, and the drying drum motor. A rotating pulley may be provided to include a belt 33 connecting the circumferential surface of the pulley and the circumferential surface of the drum body 21 .

The supply part 4 may be provided to include ducts 41 and 46 and a heat exchange part 47 provided in the duct to exchange heat with air. The duct includes an exhaust duct 41 for guiding the air discharged from the drying drum 2 to the outside of the first cabinet 1 through the exhaust port, and the drying drum 2 through the supply port 243. ) may be provided to include a supply duct 46 for supplying air to the inside.

Fans 43 and 45 may be provided in the discharge duct 41 , and the heat exchange unit 47 may be provided in the supply duct 46 . The heat exchange unit 47 may be provided as a heater that heats the air introduced into the supply duct 46. In FIG. 1, the first heater 47a and the second heater 47b are controllable independently of each other. ) is shown as an example. The fan may be provided to include an impeller 43 rotatably provided in the exhaust duct 41 , and a fan motor 45 that rotates the impeller when power is supplied. A temperature sensor 411 for measuring the temperature of the air discharged from the drying drum 3 may be provided in the discharge duct 41 .

One end of the supply duct 46 may be connected to the supply port 243 , and a free end may be provided as a flow path located inside the first cabinet 1 . When the free end of the supply duct 46 is located inside the first cabinet 1 , a through hole 121 may be provided in the first rear panel 12 .

The washing machine L includes a second cabinet 5 provided to support the bottom surface of the first cabinet 1, and a second accommodating part provided inside the second cabinet to provide a space for storing clothes ( 6) may be provided to include.

The second cabinet 5 includes a front panel 51 (second front panel) forming a front surface of the washing machine L, a rear panel 52 (second rear panel) forming a rear surface of the washing machine, and a washing machine. It may be provided to include an upper panel 54 (second upper panel) that forms the upper surface of the first cabinet 1 and provides a space in which the bottom surface of the first cabinet 1 is supported.

An inlet (a second inlet, 511) is provided in the second front panel 51, and the second inlet 511 may be provided to be opened and closed by a door (55, second door). The second accommodating part 6 includes a tub 61 provided inside the second cabinet 5 to provide a space for storing water, and a laundry drum 64 rotatably provided inside the tub to store clothes. ) may be provided to include.

The tub 61 may be fixed to the second cabinet 5 through a tub support 612 . A tub inlet 611 communicating with the second inlet 511 is provided on the front surface of the tub 61, and the tub inlet 611 is connected to the second inlet 511 through a gasket 613. can

The tub 61 is supplied with water through a water supply part, and the water stored in the tub 61 is discharged to the outside of the second cabinet 5 through a drain part.

The water supply unit may be provided to include a water supply pipe 614 connecting the water supply source and the tub 61 and a water supply valve 616 controlling opening and closing of the water supply pipe. The drain unit is a first drain pipe (617) for guiding the water inside the tub (61) to the drain pump (618), and a first drain pipe (617) for guiding the water discharged from the drain pump (618) to the outside of the second cabinet (5) It may be provided to include a second drain pipe (619). The tub 61 may be provided with a heating unit 63 for heating the water supplied through the water supply unit.

The washing drum 64 may be provided in a cylindrical shape with an empty interior. A laundry drum inlet 641 communicating with the second inlet 511 through the tub inlet 611 is provided on the front surface of the laundry drum, and the inside of the laundry drum is provided on the circumferential and rear surfaces of the laundry drum. A drum through hole 642 communicating with the inside of the tub may be provided.

The washing drum 64 may be rotated by a washing drum driving unit 7 (a washing drum motor). The washing drum driving unit 7 includes a stator 71 fixed to the rear surface of the tub 61 to form a rotating magnetic field, a rotor 72 rotating by the rotating magnetic field, and passing through the rear surface of the tub. It may be provided to include a rotating shaft 74 connecting the rotor 72 and the rear surface of the washing drum 64 .

FIG. 2 shows another embodiment of the laundry treatment apparatus 100. The laundry treatment apparatus according to the present exemplary embodiment is also provided to include a dryer T and a washing machine L. As shown in FIG. The laundry treatment apparatus provided in this embodiment may have the same structure as the laundry treatment apparatus shown in FIG. 1 except for the structure of the supply unit 4 provided in the dryer.

The supply unit 4 according to this embodiment includes ducts 41 , 46 , 48 that form a flow path for re-supplying the air discharged from the drum body 21 to the drum body 21 , and the air introduced into the duct. It may be provided to include a heat exchange unit 47 for dehumidifying and heating.

The duct may be provided to include a discharge duct 41 connected to the discharge port 226, a supply duct 46 connected to the supply port 243, and a connection duct 48 connecting the discharge duct and the supply duct. have. In this case, the impeller 43 of the fan may be provided to be located inside the connection duct 48 .

As shown in FIG. 3 , the heat exchange unit 47 includes a first heat exchanger (heat absorbing unit, 471 ) that removes moisture from the air introduced into the connection duct 48 , and inside the connection duct 48 . It is provided and includes a second heat exchanger (heating unit, 472) for heating the air that has passed through the heat absorbing unit (471). The heat absorbing part 471 and the heat generating part 472 are sequentially arranged along the moving direction of the air, and are connected to each other through a refrigerant pipe 475 forming a circulation path of the refrigerant.

The refrigerant moves along the refrigerant pipe 475 by the compressor 473 located outside the ducts 41, 46, and 48, and the refrigerant pipe 475 has the A pressure regulator 474 for adjusting the pressure of the refrigerant is provided.

The heat absorbing part 471 is a means for cooling the air and evaporating the refrigerant by transferring the heat of the air introduced into the exhaust duct 41 to the refrigerant. The heat generating unit 472 is a means for heating the air and condensing the refrigerant by transferring the heat of the refrigerant that has passed through the compressor 473 to the air. In this case, moisture contained in the air will be collected on the bottom surface of the connection duct 48 along the surface of the heat absorbing part 471 when passing through the heat absorbing part 471 .

In order to collect the water removed from the air passing through the heat absorbing part 471 , the dryer T is provided with a water collecting body 481 . The water collecting body 481 may be provided anywhere inside the laundry treatment apparatus as long as it can store the water discharged from the heat absorbing part. The provided case is shown as an example.

A heat exchanger support 483 may be further provided inside the water collecting body 481 so that the heat absorbing part and the heat generating part 471 and 472 do not come into contact with the water (condensed water) stored in the water collecting body 481 .

The above-described laundry treatment apparatus 100 should be provided with an input unit and a display unit necessary for controlling each of the apparatuses T and L. That is, as shown in FIG. 4 , the dryer T is provided with a dryer interface P1 , and the washing machine L is provided with a washing machine interface P2 .

The dryer interface P1 is provided to include a dryer display 921 and dryer input units 922 and 923, and the washing machine interface P2 is provided to include a washing machine display 961 and washing machine input units 932 and 963 can be

The dryer display 921 is a means for displaying a control command input to the dryer T or a control command input to the dryer T, and the dryer input units 922 and 923 are provided to the dryer T. It is a means for inputting control commands. Similarly, the washing machine display 961 is a means for displaying a control command input to the washing machine L or a control command input to the washing machine L, and the washing machine input units 962 and 963 control the washing machine L. It is a means of entering commands.

In order to form a sense of unity in the design of the laundry treatment apparatus 100 in which the two treatment apparatuses are vertically disposed, the dryer display 921 , the dryer input units 922 and 923 , the washing machine display 961 , and the washing machine input unit 962 , 963 may be provided in one control panel P.

The control panel P may have an upper surface fixed to the front surface (first front panel) of the dryer and a lower surface fixed to the front surface (second front panel) of the washing machine. In this case, the control panel P will also serve as a fastening part for fixing the dryer T to the washing machine L (a role for fastening the first front panel and the second front panel).

Unlike the above, the control panel P may be provided to be fixed to any one of the first front panel 11 and the second front panel 51 . 1 and 3 illustrate a case in which the control panel P is fixed to the lower end of the first front panel 11 as an example. That is, a panel receiving groove formed by bending the surface of the first front panel to be concave is provided at the lower end of the first front panel 11 , and the control panel P may be fixed to the panel receiving groove. In this case, the control panel P will form a front surface of the dryer together with the first front panel 11 .

The dryer display 921 and the dryer input units 922 and 923 are controlled by a dryer second control unit 92 provided in the dryer, and the washing machine display 961 and the washing machine input units 962 and 963 are provided in the washing machine. The washing machine is controlled by the second control unit 96 . When the second control unit controls the display and the input unit, it means that the second control unit and each device are provided to exchange control commands (or control signals) with each other (equipped to enable communication). The second control unit 92 of the dryer and the second control unit 96 of the washing machine may be provided to communicate with each other through the communication circuit 98 .

The dryer input unit may be provided to include a dryer first input unit 922 and a dryer second input unit 923 . The dryer first input unit 922 is a means for allowing the dryer to select any one of executable control commands (drying courses), and the dryer second input unit 923 controls the execution or execution of the selected control command. It may be provided as a means for inputting a control command requesting temporary interruption of the command.

The washing machine input unit may also include a washing machine first input unit 962 and a washing machine second input unit 963 . The washing machine first input unit 962 is provided as a means for allowing the washing machine to select any one of executable control commands (washing courses), and the washing machine second input unit 963 executes or executes the selected control command. It may be provided as a means for inputting a control command requesting a temporary interruption of the current control command.

The control panel P may further include a preheating request unit 965 . The preheating request unit 965 is a means for inputting a control command to operate the heat exchange unit 47 provided in the dryer T in a state in which clothes are not put into the drying drum 31 . The preheat requesting unit 965 may be provided in the dryer interface P1 or the washing machine interface P2. In FIG. 4, the preheating requesting unit 965 is connected to the washing machine interface P2 The provided case is shown as an example.

The load of the dryer is divided into a driving load and an interface load. The driving load (dryer driving load) is composed of a drying drum motor 31 , a fan motor 45 , a heat exchange unit 47 , and a temperature sensor 411 . The dryer driver B1, and the interface load (the dryer interface load) is the dryer interface P1 composed of the dryer display 921 and dryer input units 922 and 923 .

Power of the dryer loads B1 and P1 may be controlled by the dryer first control unit 91 . However, the operation of the dryer driver B1 may be controlled by the first control unit 91 of the dryer, and the operation of the dryer interface P1 may be controlled by the second control unit 92 of the dryer.

The dryer (T) is connected to the power source (S) through a first power line (931), the AC power supplied to the first power line (931) is provided to be converted into DC power through the first conversion unit (93) can be In this case, the dryer second control unit 92 receives power through the dryer first power circuit 932 connected to the first conversion unit 93 , and the dryer first control unit 91 controls the dryer second power Power is supplied through the circuit 935 , and the dryer driver B1 and the dryer interface P1 may be provided to receive power through a third power circuit 937 of the dryer.

A dryer first switch 936 may be provided in the dryer second power circuit 935 , and a dryer second switch 938 may be provided in the dryer third power circuit 937 . The dryer first switch 936 may be provided to open or close the dryer second power circuit 935 according to a control command of the dryer second control unit 92 or a control command of the dryer power control unit 924 . . The dryer power control unit 924 may be provided on the control panel P as a means for controlling power supply to the dryer driver B1 and the dryer interface P1.

When the dryer power control unit 924 transmits a control command requesting power supply to the dryer second control unit 92 (when a user inputs a power supply request signal through the dryer power control unit), the dryer second control unit ( 92) controls the first switch 936 of the dryer to close the second power circuit 935 of the dryer through the first switch control circuit 92a of the dryer. When the first switch 936 of the dryer closes the second power circuit 935 of the dryer, the first control unit 91 of the dryer will receive power.

Meanwhile, the dryer second switch 938 is provided to open and close the dryer third power circuit 937 according to a control command transmitted from the dryer first control unit 91 through the dryer second switch control circuit 91a. or may be provided to open and close the third power circuit 937 of the dryer according to a control command transmitted by the second control unit 92 of the dryer. The dryer driver B1 and the dryer interface P1 will receive power when the dryer second switch 938 closes the dryer third power circuit 937 .

The dryer second control unit 92 and the dryer power control unit 924 are always connected to power through the first power circuit 932 of the dryer. However, when the user inputs a control command to the dryer power controller 924 or the dryer second controller 92 controls the dryer driver B1 and the dryer interface P1, the dryer second controller 96 It will receive power when it receives a control command from

The dryer T having the above structure supplies power only to the dryer second control unit 92 and the dryer power control unit 924 when the dryer driving unit and the interfaces B1 and P1 do not operate, so the consumption of standby power is reduced. can be minimized

The load of the washing machine L is divided into a driving load and an interface load. The washing machine driving load is a washing machine driving unit including a washing drum driving unit 7 , a water supply valve 616 , a drain pump 618 , and a heating unit 63 . (B2), the washing machine interface load is the washing machine interface P2 including the washing machine display 961, the washing machine input units 962 and 963, and the preheating request unit 965.

The power of the washing machine loads B2 and P2 may be controlled by the washing machine first control unit 94 . The operation of the washing machine driving unit B2 may be controlled by the washing machine first control unit 94 , and the operation of the washing machine interface P2 may be controlled by the washing machine second control unit 96 .

The washing machine L is connected to the power source S through a second power line 971 , and the AC power supplied to the second power line 971 is converted into DC power through the second conversion unit 97 . can be provided. When the power line 931 of the dryer T and the power line 971 of the washing machine L are separated (independently provided), one of the two power lines is damaged or one of the two devices is broken This is to enable the other device to operate even in the .

The washing machine second control unit 96 receives power through the washing machine first power circuit 972 connected to the second conversion unit 97 , and the washing machine first control unit 94 receives power through the washing machine second power circuit 975 . ), and the loads B2 and P2 of the washing machine may be provided to receive power through a third power circuit 977 of the washing machine.

A washing machine first switch 976 is provided in the washing machine second power circuit 975 , and the washing machine first switch 976 receives a control command from the washing machine second control unit 96 or a washing machine power control unit 964 . It may be provided to open or close the washing machine second power circuit 975 according to a control command. The washing machine power control unit 964 may be provided on the control panel P as a means for controlling power supply to the washing machine driving unit B2 and the washing machine interface P2.

When the washing machine power control unit 964 transmits a control command requesting power supply to the washing machine second control unit 96 (when a user inputs a power supply request signal through the washing machine power control unit), the washing machine second control unit ( 96) controls the washing machine first switch 976 to close the washing machine second power circuit 975 through the washing machine first switch control circuit 96a. When the washing machine first switch 976 closes the washing machine second power circuit 975 , the washing machine first control unit 94 receives power.

Meanwhile, the washing machine second switch 978 is provided to open and close the washing machine third power circuit 977 according to a control command transmitted from the washing machine first control unit 94 through the washing machine second switch control circuit 94a Alternatively, the washing machine may be provided to open and close the third power circuit 977 of the washing machine according to a control command transmitted from the second control unit 96 of the washing machine. The washing machine driving unit B2 and the interface P2 will receive power when the washing machine second switch 978 closes the washing machine third power circuit 977 .

The washing machine second control unit 96 and the washing machine power control unit 964 are always connected to power through the washing machine first power circuit 972 . However, when the user inputs a control command to the washing machine power control unit 964 or the washing machine second control unit 96 controls the washing machine driving unit B2 and the washing machine interface P2, the washing machine first control unit 92 Power will be supplied when a control command is received from

5 illustrates an example of a control method of the above-described laundry treatment apparatus 100 .

As shown in the drawing, when the first power line 931 and the second power line 971 are respectively connected to the power source S, the laundry treatment apparatus 100 performs a washing standby mode step S110, and a drying standby mode. Mode step (S210) proceeds.

In the washing standby mode step S110, power is not supplied to the washing machine driving unit B2, the washing machine interface P2, and the washing machine first control unit 94, but the washing machine second control unit 96 and the washing machine power control unit ( 964) is the step of supplying power. That is, in the washing standby mode step S110 , the washing machine first switch 976 maintains the washing machine second power circuit 975 open, and the washing machine second switch 978 operates the washing machine third power circuit (977) remains open.

The washing machine power control unit 964 may be provided as a switch capable of operating the washing machine first switch 976 even when power is not maintained. In this case, the washing standby mode step ( S110 ) will be a step of supplying power to the washing machine driving unit, the washing machine interface, and the washing machine first control unit without supplying power to the washing machine second control unit.

In the drying standby mode step S210, power is not supplied to the dryer driver B1, the dryer interface P1, and the dryer first control unit 91, but the dryer second control unit 92 and the dryer power control unit ( 924) is the step of supplying power. That is, in the drying standby mode step S210 , the first switch 936 of the dryer maintains an open state of the second power circuit 935 of the dryer, and the second switch 938 of the dryer operates the third power circuit of the dryer. Keep (937) open.

The dryer power control unit 924 may be provided as a switch capable of operating the dryer first switch 936 without maintaining a state in which power is supplied. In this case, the drying standby mode step ( S210 ) will be a step in which power is not supplied to the dryer driver, the dryer interface, and the first dryer controller, but power is supplied to the dryer second controller.

When a control command for requesting power supply to the washing machine load is input through the washing machine power control unit 964 during the washing standby mode step S110, the washing machine power supply step S120 proceeds. The washing machine power supply step ( S120 ) is a step of supplying power to the washing machine first control unit 94 , the washing machine driving unit B1 , and the washing machine interface P2 .

When the washing machine power supply step (S120) is completed, the control method determines whether a washing course is input to the washing machine interface (B2) (S130). When a command for selecting a washing course is input through the washing machine first input unit 962 and a command for starting the selected washing course is input through the washing machine second input unit 963, the control method operates the washing machine driving unit B2. Control to proceed to the course execution step (S140).

The course execution step (S140) may be provided to sequentially perform a water supply operation (S141), a foreign material removal operation (S143), a drainage operation (S145), and a dehydration operation (S146).

The water supply operation (S141) is provided by the washing machine first control unit 94 controlling the water supply valve 616 to supply water to the tub 61, and the foreign material removal operation (S143) is performed by the washing machine. The first control unit 94 may control the washing drum driving unit 7 to rotate the washing drum 64 . The foreign matter removal process ( S143 ) is a process of separating foreign substances from clothes (the object to be washed), and a washing process or a rinsing process may be an example.

The draining stroke (S145) is provided by the washing machine first control unit 94 controlling the drain pump 618 to discharge the water stored in the tub 61 to the outside of the second cabinet 5, The spin-drying cycle ( S146 ) may be a cycle in which the washing machine first control unit 94 controls the washing drum driving unit 7 to remove water from clothes. When the spin-drying cycle (S146) is finished (S150, the course execution step is finished), the control method resumes the washing standby mode step (S110) to switch the washing machine L to the standby mode.

In order to shorten the drying time of clothes after washing, the control method includes a power supply step (S220) and a preheating step (S220) of increasing the temperature of the drying drum (2) and the supply unit (4) during the course execution step (S140) ( S230) is performed.

The clothes put into the drying drum 2 do not exchange heat with air as soon as the heat exchange unit 47 provided in the supply unit starts to operate. The heat energy supplied to the drying drum 2 by the operation of the heat exchange unit 47 is because the heat energy is supplied to the heat exchange passage until the temperature of the heat exchange passage composed of the drying drum, the duct and the heat exchange unit becomes higher than the temperature of the clothes. .

That is, the dryer sequentially performs a process of exchanging heat between the heat exchange passage and air and a process of exchanging heat between clothes and air, and the time required for drying is the sum of the time required for each process.

The preheating step (S230) provided in the control method of FIG. 5 causes the dryer (T) to execute a process of raising the temperature of the heat exchange passage before completion of the operation of the washing machine (L), so that the time required for drying clothes (washing and There is an effect that can shorten the time required for drying).

The dryer power supply step ( S220 ) and the preheating step ( S230 ) may be performed only when the user requests preheating of the dryer through the preheating request unit 965 . That is, the control method includes a step (S147) of determining whether a control command (preheating request signal) for requesting preheating of the dryer is input to the preheating requesting unit 965 after the washing machine power supply step (S120) is completed (S147). proceed 5 illustrates an example of a case in which the step (S147) of determining whether the preheating request signal is input is started after the course selection step (S130) is completed.

When a preheating request signal is inputted through the preheating requesting unit 965 , the control method includes the washing machine second controlling unit 96 transmitting a control command to the dryer second controlling unit 92 through the communication circuit 98 . A communication step (S149, first communication step) is performed.

When the second control unit 92 of the dryer receives the preheating request signal from the second control unit 96 of the washing machine, the control method proceeds to a dryer power supply step (S220) of supplying power to the dryer driving unit B1. do. In the step of supplying power to the dryer (S220), the second control unit 92 of the dryer controls the first switch control circuit 92a of the dryer to supply power to the first control unit 91 of the dryer; The first control unit 91 may control the dryer second switch control circuit 91a to supply power to the dryer driver B1.

In the dryer power supply step (S220), the dryer interface P1 may be provided so as not to receive power. In this case, the dryer third power circuit 937 should further include a dryer third switch (not shown) for controlling the power supplied to the dryer interface P1. The third switch of the dryer is located between the second switch 938 of the dryer and the display P1 of the dryer, and is provided as a switch controlled by either the first control unit 91 or the second control unit 92 of the dryer. can be

The preheating step (S230) includes a supply cycle (S233) in which the dryer first control unit 91 operates the fans 43 and 45 to supply air to the drying drum 2 (S233), and the dryer first control unit ( 91) may be provided to include a heating cycle (S231) of heating the air supplied to the drying drum (2) by operating the heat exchange unit (47).

When the dryer provided in the laundry treatment apparatus 100 includes an exhaust drying system (the dryer shown in FIG. 1 ), the heating cycle S231 may be provided to operate only some of the plurality of heaters. That is, when the dryer is provided with two heaters 47a and 47b as shown in FIG. 1 , the heating cycle S231 may be set to operate only one of the two heaters. This is to minimize energy consumption.

Meanwhile, as the preheating step ( S230 ) takes longer, the power consumption of the dryer (T) will increase. Accordingly, the dryer power supply step ( S220 ) may be set to start when the remaining time until the end of the course execution step ( S140 ) is less than or equal to a preset reference time. That is, when the remaining time until the end of the course execution step ( S140 ) is equal to or less than the reference time ( S148 ), the washing machine second control unit 96 transmits the preheating request signal to the dryer second control unit 92 . (S149) may be provided.

The reference time is located between the start time of the draining cycle (S145) and the completion time of the dewatering cycle (S150), or between the start time of the dewatering cycle (S146) and the end time (S150) of the dewatering cycle. can be set at the time of That is, the reference time may be set to be less than or equal to the time remaining from the start of the draining cycle to the completion of the dewatering cycle.

The above-described preheating step (S230) may be set to end when the dehydration cycle is finished (S150). To this end, the control method includes a communication step (S161, second communication step) in which the washing machine second control unit 96 notifies the dryer second control unit 92 of the end of the spin-drying cycle after the spin-drying cycle is finished. can proceed.

When the end of the course execution step (S140) is notified (S240) through the second communication step (S161), the second control unit 92 of the dryer notifies the first control unit 91 of the dryer, and the dryer The first control unit 91 may terminate the operation of the heat exchange unit 47 and the operation of the fan motor 45 ( S270 ). When the preheating step is finished (S270), the control method resumes the drying standby mode step (S210) to switch the dryer T to the standby mode state.

The preheating step (S230), which is performed before the start of the second communication step (S161), may be provided to control the heat exchange unit 47 according to the temperature of the heat exchange passage. The temperature of the heat exchange passage may be determined through the temperature of the air discharged from the drying drum 2 , the temperature of the refrigerant circulating along the refrigerant pipe 475 , and the like.

That is, in the laundry treatment apparatus 100 having the structure of FIGS. 1 to 3 , the temperature sensor 411 measures the temperature of the air flowing into the discharge duct 41 to determine the preheating state of the heat exchange passage. have. However, the laundry treatment apparatus having the structures of FIGS. 2 and 3 may determine the preheating state of the heat exchange passage by measuring the temperature of the refrigerant or the temperature of the refrigerant pipe 475 .

During the preheating step (S230), the control method may proceed with a measuring step (S235) of measuring the temperature of the air discharged from the drying drum (2) through the temperature sensor (411). The measuring step ( S235 ) may be periodically repeated after the start of the preheating step ( S230 ), and may be set to end when the preheating step ( S230 ) ends.

If the second communication step (S161) is not started and the temperature measured in the measuring step (S235) is lower than the preset reference temperature (S250), the control method maintains the preheating step (S230).

However, if the second communication step (S161) is not started, and the temperature measured in the measurement step (S235) is higher than the reference temperature (S250), the control method stops the heating cycle (S231) (S260) do. That is, when the temperature of the air introduced into the discharge duct 41 is higher than the reference temperature (S250), the preheating step (S230) maintains the supply cycle (S233), but the heating cycle (S231) is temporarily quit

After the completion of the heating cycle ( S260 ), the control method resumes the step ( S240 ) of determining whether the washing machine second control unit 96 has transmitted a spin-drying complete signal to the dryer second control unit 92 .

On the other hand, even if the preheating step (S230) proceeds only the supplying cycle (S233), the measuring step (S235) proceeds periodically, and the heating cycle (S231) is measured while only the supplying cycle (S233) proceeds. It resumes when the temperature of the air is below the reference temperature.

Considering that the temperature of the air discharged from the drying drum 2 is approximately 65 degrees Celsius at the time when the heat exchange between the clothes and the air input into the drying drum 2 in the dryer becomes active, the reference temperature is 55 degrees Celsius to 75 degrees Celsius.

FIG. 6 shows another example of a control method of the laundry treatment apparatus having the structures of FIGS. 2 and 3 . The difference in this embodiment from the control method of FIG. 5 is that the compressor 473 depends on the temperature of the heat exchange passage. to control the output of

That is, the control method according to the present embodiment proceeds to the step (S251) of determining whether the temperature measured in the measuring step (S235) is less than a preset first reference temperature. When the temperature measured by the temperature sensor 411 is less than the first reference temperature, the first control unit 91 of the dryer increases the output of the compressor 473 to increase the flow rate of the refrigerant ( S261 ). This is to increase the temperature of the heat exchange passage in a short time.

If the compressor 473 has a structure that moves the refrigerant using centrifugal force such as an impeller, the output of the compressor may be increased by increasing the rotation speed of the impeller. If the compressor 473 has a structure that compresses the refrigerant using a piston that reciprocates linearly, the output of the compressor may be increased by shortening the reciprocating cycle of the piston.

On the other hand, if the temperature measured in the measuring step (S235) is equal to or higher than the first reference temperature, the control method determines that the temperature of the air discharged from the drying drum 2 is a second reference temperature (a temperature higher than the first reference temperature). to determine whether it is higher than ) proceeds to step S253.

When the temperature of the air introduced into the discharge duct 41 is greater than the second reference temperature, the dryer first control unit 91 controls the compressor to decrease the flow rate of the refrigerant ( S263 ).

However, if the temperature measured in the measuring step (S235) is equal to or greater than the first reference temperature and equal to or less than the second reference temperature, the control method maintains the heating cycle (S231) and the supply cycle (S23) (flow rate of refrigerant) while maintaining), it is periodically determined whether a dehydration completion signal is transmitted (S240).

Considering that the temperature of the air discharged from the drying drum 2 is approximately 65 degrees Celsius at the time when the heat exchange between the clothes and the air put into the drying drum 2 becomes active, the first reference temperature is set to 55 degrees Celsius and the second reference temperature may be set to 75 degrees Celsius.

The above-described control method may also be applied to a laundry treatment apparatus in which the controllers 91 and 92 for controlling the dryer and the controllers 94 and 96 for controlling the washing machine are integrated. That is, in the above-described control method, one first controller for controlling the dryer driver B1 and the washing machine driver B2 and one second controller for controlling the dryer interface P1 and the washing machine interface P2 are provided It can also be applied to a single clothes treatment device. In this case, the control method may be provided to include a standby mode step, a washing machine power supply step, a course selection step, a course execution step, a dryer power supply step, and a preheating step.

In the standby mode, power is not supplied to the washing machine driving unit B2, the washing machine interface P2, the dryer driving unit B1, the dryer interface P1, and the first control unit, but power is supplied to the second control unit step will be

The washing machine power supply step will be a step of supplying power to the first control unit, the washing machine driving unit B2, and the washing machine interface P2, and the course selection step is a washing course through the washing machine interface P2. will be a step of receiving input, and the course execution step may be set to a step of executing a water supply operation, a foreign matter removal operation, a drainage operation, and a dehydration operation.

When a preheating request signal is input through the preheating request unit 965 after completion of the course selection step, in the present embodiment, the dryer power supply step in which the first control unit supplies power to the dryer driving unit B1 proceeds. . The preheating step may be performed after the start of the power supply step of the dryer, and the preheating step may include a supply cycle and a heating cycle. In order to minimize the amount of power consumed in the preheating step, the dryer power supply step is preferably set to start when the remaining time until the course execution step ends is less than or equal to the reference time.

The above-described laundry treatment apparatus and the method for controlling the laundry treatment apparatus may be modified and implemented in various forms. That is, the above-described method for controlling the laundry treatment apparatus may be applied to a laundry treatment apparatus having a control system different from the control system shown in FIG. 4 .

In the laundry treatment apparatus provided to include a washing machine (L) provided with the tub (61) and the washing drum (64), and a dryer (T) provided with the drying drum (2) and the supply unit (4) , The above-described method for controlling the laundry treatment apparatus includes a washing machine power supply step of supplying power to the washing machine interface P2 (S120), and when a washing course is input to the washing machine interface P2 (S130), the washing machine L A course execution step (S140) of executing the washing course, a dryer power supply step (S220) of supplying power to the dryer (T) when a preheating request signal is input through the washing machine interface (P2) (S220), and the supply unit (4) ) may be provided to include a preheating step (S230) of supplying heated air to the drying drum.

The preheating step (S230) includes a preheating step having a supply cycle (S233) of supplying air to the drying drum (2) and a heating cycle (S231) of heating the air supplied to the drying drum (2). can be provided.

The step of supplying power to the dryer ( S220 ) may include activating the display 921 of the dryer and supplying power to the supply unit 4 . The step of activating the dryer display and the step of supplying power to the supply unit may be performed sequentially or may be performed simultaneously. In either case, the dryer display 921 in the inactive state is activated when the preheating request signal is received from the washing machine L.

The preheating request signal may be transmitted to the dryer T through the communication step S149, and the dryer power supply step S220 may be started after the communication step S149 is completed. The communication step (S149) may be started when the remaining time until the end of the course execution step (S140) is less than or equal to the reference time (S148).

When the course execution step (S140) is provided to include the water supply operation (S141), the foreign material removal operation (S143), the drainage operation (S145), and the dehydration operation (S147), the reference time is the drain operation The time remaining from the start of the process S145 to the completion of the dehydration process S147 may be set to less than or equal to the time remaining. Alternatively, the reference time may be set to be less than or equal to the time remaining from the start of the dehydration process (S147) to the end of the dehydration process (S147).

Meanwhile, in the preheating step (S230), if the temperature of the air discharged from the drying drum is higher than the reference temperature, only the supplying cycle (S233) may proceed (temporarily interrupting the heating cycle). The temporarily stopped heating process (S231) may be started when the temperature of the air discharged from the drying drum is below the reference temperature. The temperature of the air discharged from the drying drum 2 may be measured through the measuring step S235, and since the measuring step has been described above, a detailed description thereof will be omitted. The preheating step (S230) may be ended when the dehydration process (S146) is finished.

When the dryer (T) is provided as a circulating drying system, if the temperature of the air discharged from the drying drum (2) during the preheating step (S230) is less than the first reference temperature, the compressor (473) can increase the flow rate of the refrigerant (refer to FIG. 6). This is to increase the output of the compressor 473 ( S261 ) to increase the temperature of the heat exchange passage in a short time.

On the other hand, if the temperature of the air discharged from the drying drum during the preheating step (S230) is higher than the first reference temperature and less than or equal to the second reference temperature (temperature higher than the first reference temperature), the compressor 473 operates the It may be controlled to maintain the flow rate of the refrigerant, and to decrease the flow rate of the refrigerant when the temperature of the air is higher than the second reference temperature.

100: clothes processing device T: dryer L: washing machine
P: Control panel S: Power supply 1: 1st cabinet
111: first inlet 15: first door 2: drying drum
22: front support 24: rear support 3: drying drum driving unit
4: supply part 41: exhaust duct 43: impeller
411: temperature sensor 46: supply duct 48: connection duct
481: water collecting body 47: heat exchange unit 471: heat absorbing unit
472: heating part 473: compressor 474: pressure regulator
475: refrigerant pipe 5: second cabinet 511: second inlet
55: second door 61: tub 611: tub inlet
614: water supply pipe 616: water supply valve 617: first drain pipe
618: drain pump 619: second drain pipe 63: heating unit
64: washing drum 7: washing drum driving unit 91: dryer first control unit
92: dryer second control unit 924: dryer power control unit P1: dryer interface
921: dryer display 922: dryer first input unit 923: dryer second input unit
93: first conversion unit 931: first power line 932: dryer first power circuit
935: dryer second power circuit 936: dryer first switch 937: dryer third power circuit
938: dryer second switch 94: washing machine first control unit 96: washing machine second control unit
964: washing machine power control unit P2: washing machine interface 961: washing machine display
962: washing machine first input unit 963: washing machine second input unit 965: preheating request unit
97: second conversion unit 971: second power line 972: washing machine first power circuit
975: washing machine second power circuit 976: washing machine first switch 977: washing machine third power circuit
978: washing machine second switch 98: communication circuit

Claims (25)

A washing machine provided with a tub for storing water and a washing drum provided inside the tub to store clothes, and a drying drum for storing clothes and a dryer provided with a supply unit for supplying air to the drying drum to remove moisture from clothes A method of controlling a clothes treatment apparatus comprising:
a washing machine power supply step of supplying power to a washing machine interface provided to receive a control command;
a course execution step in which the washing machine executes the washing course when a washing course is input to the washing machine interface;
a dryer power supply step of supplying power to the dryer when a preheating request signal is input through the washing machine interface; and
and a preheating step comprising a supply cycle of supplying air to the drying drum and a heating cycle of heating the air supplied to the drying drum. According to claim 1,
and activating a display of the dryer when the preheating request signal is received. According to claim 1,
The step of supplying power to the dryer may include activating a dryer display; and supplying electric power to the supply unit. According to claim 1,
and a communication step in which the washing machine transmits the preheating request signal to the dryer when the preheating request signal is input through the washing machine interface. According to claim 1,
The method of claim 1, wherein the step of supplying power to the dryer is started when the remaining time until the end of the course execution step is equal to or less than a preset reference time. 6. The method of claim 5,
The course execution step includes a water supply operation for supplying water to the tub, a foreign matter removal operation for rotating the washing drum, a drainage operation for discharging the water from the tub to the outside of the tub, and a water supply operation for rotating the washing drum to remove water from clothes Sequentially run a dehydration cycle to remove
and the reference time is set to be less than or equal to a time remaining from the start of the draining cycle to the completion of the dewatering cycle. 6. The method of claim 5,
The course execution step includes a water supply operation for supplying water to the tub, a foreign matter removal operation for rotating the washing drum, a drainage operation for discharging water from the tub to the outside of the tub, and a water supply operation for rotating the washing drum to remove water from clothes The dehydration cycle to remove the
and the reference time is set to be less than or equal to the time remaining from the start of the spin-drying cycle to the end of the spin-drying cycle. 8. The method according to any one of claims 1 to 7,
A measuring step of measuring the temperature of the air discharged from the drying drum during the preheating step; further comprising,
In the preheating step, the heating cycle is stopped when the temperature measured in the measuring step is higher than a preset reference temperature. 9. The method of claim 8,
If the temperature measured in the measuring step is equal to or less than the reference temperature, the preheating step restarts the heating cycle. 9. The method of claim 8,
The method of claim 1, wherein the preheating step is terminated when the washing machine notifies the dryer of the end of the dewatering cycle. 9. The method of claim 8,
The method of claim 1, wherein the heating process operates only some of the heaters provided in the supply unit to heat air. 9. The method of claim 8,
The supply unit includes a duct for re-supplying the air discharged from the drying drum to the drying drum, a refrigerant passage forming a passage through which the refrigerant circulates, a compressor for allowing the refrigerant to circulate along the refrigerant passage, and the duct in the drying drum Containing; a heat absorbing part that transfers the heat of the air introduced into the refrigerant to the refrigerant, and a heat absorbing part that transfers the heat of the refrigerant to the air that has passed through the heat absorbing part,
and controlling the compressor to increase the flow rate of the refrigerant when the temperature of the air discharged from the drying drum measured during the preheating step is less than a preset first reference temperature. 13. The method of claim 12,
If the temperature of the air discharged from the drying drum measured during the preheating step is higher than the first reference temperature and less than or equal to the second reference temperature set to a temperature higher than the first reference temperature, the flow rate of the refrigerant is maintained. A method of controlling a laundry treatment apparatus, comprising controlling a compressor. 12. The method of claim 11,
and controlling the compressor to decrease the flow rate of the refrigerant when the temperature of the air discharged from the drying drum is higher than the second reference temperature during the preheating step. a washing standby mode step of supplying power to the washing machine driving unit, the washing machine first control unit controlling the washing machine driving unit, and the washing machine interface, but not supplying power to the washing machine second control unit controlling the washing machine interface;
a drying standby mode step of supplying power to the dryer driver, the dryer first controller controlling the dryer driver, and the dryer interface without supplying power, but supplying power to the dryer second controller controlling the dryer interface;
a washing machine power supply step of supplying power to the washing machine driving unit, the washing machine first control unit, and the washing machine interface;
a course execution step of controlling the washing machine driving unit to execute the washing course when a washing course is input through the washing machine interface;
a communication step of transmitting, by the washing machine second control unit, the preheating request signal to the dryer second control unit, when the preheating request signal input through the washing machine interface is input;
a dryer power supply step of supplying power to the dryer driving unit when the second dryer control unit receives the preheating request signal; and
and a preheating step comprising a supply cycle of supplying air to the drying drum and a heating cycle of heating the air supplied to the drying drum by controlling the dryer driving unit. 16. The method of claim 15,
The method of claim 1, wherein the step of supplying power to the dryer is started when the remaining time until the end of the course execution step is equal to or less than a preset reference time. 17. The method of claim 16,
The course execution step includes a water supply operation for supplying water to the tub, a foreign matter removal operation for rotating a laundry drum provided in the tub and storing clothes, a drainage operation for discharging water from the tub, and a washing drum for clothes by rotating the washing drum. The dehydration process to remove water from the
The reference time is set to be less than or equal to the time remaining from the start of the draining cycle to the completion of the dewatering cycle, or set to a time less than or equal to the time remaining from the start of the dewatering cycle to the end of the dewatering cycle. A method of controlling the laundry treatment apparatus of the laundry treatment apparatus, characterized in that. 18. The method according to any one of claims 16 to 17,
A measuring step of measuring the temperature of the air discharged from the drying drum during the preheating step; further comprising,
In the preheating step, when the temperature measured in the measuring step is higher than a preset reference temperature, the heating cycle is stopped, and when the temperature measured in the measuring step is below the reference temperature, the heating cycle is restarted. How to control the device. 19. The method of claim 18,
The method of claim 1, wherein the preheating step is terminated when the second control unit of the washing machine notifies the second control unit of the dryer that the spin-drying cycle is terminated. 19. The method of claim 18,
The method of claim 1, wherein in the heating cycle, only some of the heaters provided to heat the air supplied to the drying drum are operated. 19. The method of claim 18,
The heating process includes a duct for re-supplying the air discharged from the drying drum to the drying drum, a refrigerant passage forming a passage through which the refrigerant circulates, a compressor allowing the refrigerant to circulate along the refrigerant passage, and in the drying drum Proceeds through; a heat absorbing part that transfers the heat of the air introduced into the duct to the refrigerant, and a heat absorbing part that transfers the heat of the refrigerant to the air that has passed through the heat absorbing part;
When the temperature of the air discharged from the drying drum measured during the preheating step is less than a preset first reference temperature, the first control unit of the dryer controls the compressor to increase the flow rate of the refrigerant. A method of controlling a processing device. 22. The method of claim 21,
When the temperature of the air discharged from the drying drum measured during the preheating step is higher than the first reference temperature and less than or equal to a second reference temperature set to a temperature higher than the first reference temperature, the dryer first control unit may include the refrigerant A control method of a laundry treatment apparatus, characterized in that the compressor is controlled to maintain a flow rate of 22. The method of claim 21,
When the temperature of the air discharged from the drying drum measured during the preheating step is higher than the second reference temperature, the first control unit of the dryer controls the compressor to decrease the flow rate of the refrigerant. How to control the device. Power is not supplied to the first control unit controlling the washing machine driving unit, the washing machine interface, the dryer driving unit, the dryer interface, the washing machine driving unit, and the dryer driving unit, but power is supplied to the second control unit controlling the washing machine interface and the dryer interface standby mode;
a washing machine power supply step of supplying power to the washing machine interface;
a course execution step of executing the washing course by controlling the washing machine driving unit when a washing course is input through the washing machine interface;
a dryer power supply step of supplying power to the dryer driving unit when a preheating request signal is input through the washing machine interface; and
and a preheating step comprising a supply cycle of supplying air to the drying drum through the dryer driving unit and a heating cycle of heating the air supplied to the drying drum. 25. The method of claim 24,
The method of claim 1, wherein the step of supplying power to the dryer is started when the remaining time until the end of the course execution step is equal to or less than a preset reference time.

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