KR102352396B1 - Control Method for Laundry Treating Apparatus - Google Patents

Abstract

The present invention relates to a control method of a clothes treatment apparatus capable of rapidly cooling high-temperature clothes after drying has been completed, comprising: an accommodating part accommodating clothes, and a duct forming a circulation path through which air inside the accommodating part circulates; In the control method of a clothes treatment apparatus comprising a vent unit for communicating with the receiving unit and external air, the drying or cooling of clothes in the receiving unit, the drying step in which the hot air is supplied to the receiving unit to dry the clothes, the hot air supply is stopped and the duct is closed Provided is a control method for a clothes treatment apparatus comprising a step of blocking a flow path to be blocked and a cooling step of cooling clothes as air from a receiving unit is discharged to the outside through a vent unit.

Description

{Control Method for Laundry Treating Apparatus}

The present invention relates to a control method of a clothes treatment apparatus that performs cooling after drying.

A clothes treatment apparatus for drying refers to an apparatus capable of washing and drying clothes or shoes, or both washing and drying. In general, the laundry treatment apparatus may perform only one of washing and drying functions, or may perform both washing and drying functions.

The clothes treatment apparatus for drying is divided into an exhaust type and a condensation type. The exhaust type is a method in which outside air is introduced to be heated by a heater, the heated air is supplied to the inside of the receiving unit accommodating the object to be dried, the object to be dried is dried, and the outdoor air used for drying is exhausted to the outside again. The condensing type supplies heated air to the accommodating part, and the moisture-containing air passes through the condenser to remove moisture and supplies it back to the accommodating part, and a circulation flow path for circulating the air is formed.

Meanwhile, the clothes treatment apparatus supplies heated air to a storage unit in which clothes are stored for drying. Therefore, when drying is finished, the temperature of the clothes accommodated in the accommodating part increases, and there is a problem in that it is difficult for the user to take out the clothes.

Accordingly, a method of cooling clothes by supplying cold air at room temperature to clothes when drying is completed has emerged. In particular, in the exhaust-type laundry treatment apparatus, when drying is finished, it is possible to open a member such as a separate damper and then introduce outside air to cool the clothes.

However, in the case of a condensing type laundry treatment apparatus, it is not easy to introduce outdoor air because it does not have a configuration that selectively communicates with the outside air like such a damper. There was a problem that it takes a lot of time to cool clothes because it only circulates the clothes and does not allow outside air with a relatively low temperature to flow in.

An object of the present invention is to provide a method for controlling a clothes treatment apparatus capable of rapidly cooling high-temperature clothes after drying has been completed.

Furthermore, the present invention provides for the step of cooling the garment by disposing after the step of washing the filter. An object of the present invention is to provide a control method for a clothes treatment apparatus that reduces manufacturing cost by not adding a new configuration for cooling other than the existing configuration.

The present invention, in order to solve the above-described problem, a receiving unit in which clothes are accommodated; a duct forming a circulation path through which the air inside the receiving unit circulates; and a vent unit communicating the accommodating unit with outside air, comprising: a drying step of supplying the hot air to the accommodating unit to dry the clothes; a flow path blocking step in which the hot air supply is stopped and the duct is blocked; and a cooling step in which the clothes are cooled as the air from the accommodating part is discharged to the outside through the vent part.

The method of claim 1, wherein the clothes treatment apparatus comprises: a filter provided upstream of the flow path formed in the duct to remove foreign substances from the air; and a spraying unit that sprays water to the filter, wherein in the flow path blocking step, the jetting unit sprays water to the filter to form a water film.

The laundry treatment apparatus may further include a fan provided downstream of the flow path formed in the duct to move air, and in the cooling step, the fan may operate to supply cool air to the accommodating part.

The duct may be provided with a heat exchanger installed through the duct between the upstream and downstream.

The filter is provided on the upper portion of the receiving unit and exposed to the receiving unit, and in the cooling step, the rpm of the fan may be adjusted so that the water film formed on the filter is maintained for a preset time.

In the cooling step, the rpm of the fan may be adjusted so that a force is applied in a direction opposite to the direction in which gravity acts on the water film formed on the filter.

In the cooling step, the rpm of the fan may be adjusted so that a force of a magnitude corresponding to the magnitude of gravity acting on the water film formed on the filter acts.

The receiving unit includes: a tub for storing washing water; and a drum rotatably provided inside the tub to store clothes, and in the cooling step, the drum may rotate at a preset rpm.

The receiving unit includes: a tub for storing washing water; and a drum rotatably provided inside the tub to store clothes, and in the step of blocking the flow path, at least one of a rotation direction and an rpm may be adjusted to prevent the drum from entering water falling from the outside. .

Rotation of the drum may be performed while the spraying unit sprays water.

In addition, the present invention includes: a tub for storing washing water and having an outlet for discharging air and an inlet for sucking air into the tub; a drum rotatably provided inside the tub to store clothes; a duct provided on the upper portion of the tub, one end connected to the outlet and the other end connected to the outlet to form a circulation path through which the air inside the tub circulates; a vent unit communicating the inside of the tub with outside air; a filter provided at the outlet to remove foreign substances from the air; a spraying unit for spraying water to the filter; a fan provided in the duct and disposed adjacent to the outlet and moving air; In the control method of the laundry treatment apparatus comprising; a heat exchanger provided in the duct and disposed between the filter and the fan to exchange heat with air, wherein the hot air is supplied to the accommodating part by the operation of the heat exchanger and the fan. a drying step in which the clothes are supplied and dried; a flow path blocking step in which the operation of the heat exchanger and the fan is stopped, and the spraying unit sprays water to the filter to form a water film so that the duct is blocked; and a cooling step in which the fan is operated to cool the clothes as the air in the accommodating part is discharged to the outside through the vent part.

In the cooling step, as the fan operates, the outside air of the tub may be introduced into the accommodating part through a tolerance.

The discharge unit is provided on the upper circumferential surface of the tub, and in the cooling step, the rpm of the fan may be adjusted so that the water film formed on the filter is maintained for a preset time.

In the flow path blocking step, at least one of a rotation direction and an rpm may be adjusted in order to prevent the drum from introducing water falling from the water film.

In the flow path blocking step, the drum may rotate while the spraying unit sprays water.

The present invention provides an effect of providing a method for controlling a clothes treatment apparatus capable of rapidly cooling high-temperature clothes after drying has been completed.

Furthermore, the present invention provides for the step of cooling the garment by disposing after the step of washing the filter. It provides the effect of reducing the manufacturing cost by not adding a new configuration for cooling other than the existing configuration.

1 is a perspective view of a laundry treatment apparatus according to an embodiment of the present invention.
FIG. 2 is a side cross-sectional view schematically illustrating the laundry treatment apparatus shown in FIG. 1 .
3 is a schematic diagram for explaining the flow of air in the laundry treatment apparatus.
4 and 5 are flowcharts illustrating a method of controlling a laundry treatment apparatus according to an embodiment of the present invention.

It should be understood that the embodiments described below are illustratively shown to aid understanding of the invention, and the present invention may be implemented with various modifications different from the embodiments described herein. However, in the description of the present invention, if it is determined that a detailed description of a related known function or component may unnecessarily obscure the gist of the present invention, the detailed description and detailed illustration thereof will be omitted. In addition, the accompanying drawings are not drawn to scale in order to help understanding of the invention, but dimensions of some components may be exaggerated.

The first and second terms used in the present application may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one constituent from another.

In addition, the terms used in the present application are only used to describe specific embodiments, and are not intended to limit the scope of rights. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as "comprises", "consists of" or "consisting It should be understood that this does not preclude the possibility of addition or existence of further other features or numbers, steps, operations, components, parts, or combinations thereof.

1 is a perspective view of a laundry treatment apparatus 100 according to an embodiment of the present invention.

Referring to FIG. 1 , a laundry treatment apparatus 100 according to an embodiment of the present invention includes a cabinet 1 and a door 13 . The cabinet 1 has an accommodating part 2 which is a space in which clothes are accommodated, and an inlet for putting the clothes into the accommodating part 2 or withdrawing the clothes stored in the accommodating part 2 to the outside of the cabinet 1 . is provided on the front side. The door 13 is rotatably coupled to the cabinet 1 to open and close the inlet.

The laundry treatment apparatus 100 according to an embodiment of the present invention will be described in more detail with reference to FIG. 2 . FIG. 2 is a side cross-sectional view schematically illustrating the laundry treatment apparatus 100 shown in FIG. 1 .

Referring to FIG. 2 , the door 13 is provided with a control panel 15 that receives a control command input from the user and displays the progress of the input control command.

The control panel 15 includes an input unit 151 for receiving a control command input from the user, a display unit 153 and an input unit 151 for displaying a control command selectable by the user or displaying information on the progress of the control command selected by the user. A controller 16 is provided for controlling the laundry treatment apparatus 100 including the display unit 153 according to a control command signal transmitted from the . The arrangement of the input unit 151 , the display unit 153 , and the controller 16 illustrated in FIG. 2 is according to an example and is not limited thereto.

Meanwhile, the clothes treatment apparatus 100 according to an embodiment of the present invention may be a device capable of washing clothes as well as drying clothes.

In the former case, the accommodating part 2 may be provided with only the drum 24 that is rotatable inside the cabinet 1 and provides a space for storing clothes. In the latter case, the accommodating part 2 is provided inside the cabinet 1 to provide a space for storing water, and the tub 21 is rotatably provided inside the tub 21 to provide a space for storing clothes. (24) may be provided.

Hereinafter, for convenience of description, a structure in which the accommodation space includes the tub 21 and the drum 24 will be described.

The tub 21 is fixed inside the cabinet 1 through the support part. The support part may be provided with a spring 215 and a damper 216 that prevent the vibration generated in the tub 21 from being transmitted to the cabinet 1 .

The tub 21 is provided with a tub 21 inlet communicating with the inlet. The inlet of the tub 21 is connected to the inlet through the gasket 213 . The gasket 213 serves to prevent water stored in the tub 21 from leaking into the cabinet 1 .

The tub 21 may receive water through the water supply pipe 31 , and the water supplied to the inside of the tub 21 may be discharged to the outside of the cabinet 1 through the drain pipe 41 .

The water supply pipe 31 is provided to connect a water supply source (not shown) located outside the cabinet 1 and the tub 21 , and the water supply pipe 31 is connected to the first valve 33 controlled by the controller 16 . open or closed by

The drain pipe 41 serves as a flow path for guiding the water inside the tub 21 to the outside of the cabinet 1 , and a pump 43 is provided therein.

The water level inside the tub 21 may be controlled through the pressure sensing unit 27 . The pressure sensing unit 27 may be provided with a communication pipe 271 communicating with the inside of the tub 21 and a pressure sensor 273 sensing the pressure inside the communication pipe 271 . As shown in FIG. 2 , the pressure sensing unit 27 may have a communication pipe 271 communicated with the inside of the tub 21 through a drain pipe 41 . In this case, when the water level inside the tub 21 increases, the pressure inside the communication pipe 271 increases, and the pressure sensor 273 detects the high pressure and transmits the corresponding data signal (voltage or current) to the controller 16 . . The controller 16 may determine the water level inside the tub 21 through the data transmitted from the pressure sensor 273 .

On the other hand, the tub 21 is provided with a vent portion 6 (refer to FIG. 3 ) for communicating the inside of the tub 21 with the outside of the tub 21 . The vent part 6 is provided on the upper circumferential surface of the tub 21 and serves to ventilate the internal air of the tub 21 .

The drum 24 includes an inlet and a drum 24 inlet communicating with the inlet of the tub 21 , and a plurality of through-holes 243 communicating the inside of the drum 24 with the inside of the tub 21 .

The drum 24 is rotated by the drum driving unit 25 provided in the cabinet 1 . The drum driving unit 25 is fixed to the rear surface of the tub 21 and passes through the stator 251 that forms a rotating field when a current is supplied, the rotor 255 rotating by the rotating magnetic field, and the tub 21 Thus, it may include a rotating shaft 253 connecting the drum 24 and the rotor 255 .

The hot air supply units (7, 8, 9) are provided inside the duct (7) and the duct (7) positioned above the tub (21) to form an air circulation path, and a fan for moving the air inside the tub (21). (8), it may be provided as a heat pump (9) for dehumidifying and heating the air introduced into the duct (7).

The duct 7 has one end connected to the outlet provided to pass through the tub 21 and the other end connected to the inlet 219 provided to pass through the tub 21 . This duct 7 includes an approximately horizontally extending portion formed between one end and the other end.

The outlet is provided on the upper portion of the tub 21 and is formed to penetrate the circumferential surface of the tub 21 formed in a cylindrical shape. In addition, when the tub 21 is viewed from the front, the outlet is circled by a predetermined angle θ from the highest point among the circumferential surfaces of the tub 21 with respect to an imaginary center (C) axis extending in the longitudinal direction of the tub 21 . It may be provided at a point spaced apart along the main surface. Here, as shown in FIG. 3 , a line connecting the virtual center (C) axis and the point A to pass through the highest point among the circumferential surfaces of the tub 21 and the virtual center (C) axis to pass through the filter 217 and The predetermined angle θ formed by the line connecting the point B may form an acute angle.

On the other hand, the outlet is provided with a filter 217 for filtering the air flowing into the duct (7). In other words, the filter 217 is provided upstream of the flow path formed in the duct 7 .

Also, the filter 217 may have a radius of curvature of the filter 217 equal to the radius of curvature of the tub 21 so that the surface forms the inner circumferential surface of the tub 21 . Referring to FIG. 3, the filter 217 shows a case provided at the outlet, but this is only an example and may be provided by being drawn in along the duct 7 from the outlet, and downward from the outlet, that is, It may be provided to protrude inside the tub 21 . However, it is preferable not to be provided in the horizontally formed part of the duct 7 for discharging the water sprayed from the spraying parts 35 , 37 , 39 to be described later.

Meanwhile, spraying units 35 , 37 , and 39 for cleaning the filter 217 may be further provided at the outlet. The injection parts 35, 37, 39 are formed by a nozzle 39 fixed inside the duct 7, a second water supply pipe 35 connecting the nozzle 39 and a water supply source (not shown), and a controller 16. It is controlled and includes a second valve 37 for opening and closing the second water supply pipe (35).

A fan 8 is provided adjacent to the inlet 219 side of the duct 7 . In other words, it is provided downstream of the flow path formed in the duct (7). The fan 8 is an impeller 81 rotatably provided inside the duct 7, as shown in FIG. 3, and a fan motor 83 fixed to the outside of the duct 7 to rotate the impeller 81. can be provided with

The heat exchanger, that is, the heat pump 9 is located inside the duct 7 and passes through the evaporator 91 for evaporating the refrigerant, the condenser 93 for condensing the refrigerant and the evaporator 91 located inside the duct 7 A compressor 95 that compresses one refrigerant and moves it to the condenser 93, an expansion valve 97 that expands the refrigerant to lower the pressure, an evaporator 91, a condenser 93, a compressor 95, and an expansion valve 97 ) and a refrigerant pipe (99) for communicating.

The evaporator 91 cools the air by absorbing heat from the introduced air while evaporating into gas while the refrigerant absorbs latent heat. Accordingly, water vapor contained in the air is condensed and becomes liquid water. The compressor 95 compresses the evaporated gaseous refrigerant to high temperature and high pressure. The condenser 93 condenses the refrigerant compressed with high temperature and high pressure to low temperature to make it a liquid. At this time, as the refrigerant discharges latent heat, the air passing through the condenser 93 is heated. The expansion valve 97 expands the volume of the refrigerant, which is a low-temperature liquid, to further lower the pressure and temperature. The refrigerant having the pressure and temperature lowered again passes through the evaporator 91 .

On the other hand, the compressor 95 may be provided in any way as long as it can implement the above-described functions, a reciprocating compressor 95 (reciprocating compressor), a rotor 255, a compressor 95 (rotary compressor) and a scroll The compressor 95 (scroll compressor) may be an example.

Hereinafter, the flow of air generated during drying and cooling of the clothes in the accommodation unit 2 will be described in detail with reference to FIG. 3 . 3 is a schematic diagram for explaining the flow of air in the laundry treatment apparatus 100 .

When drying is started, the drum 24 rotates while the hot air supply units 7 , 8 and 9 operate. Due to the clothes accommodated inside the drum 24, the air inside the drum 24 is in a humid state. This humid air is introduced into the duct 7 through the outlet by the fan 8 and moves in the direction of the arrow. The air introduced into the duct 7 is dehumidified while cooling when passing through the evaporator 91 , and after passing through the condenser 93 , the high temperature and dry state is again introduced into the tub 21 through the inlet 219 . The hot and dry air introduced into the tub 21 is introduced into the duct 7 again while heating and drying the wet clothes. Accordingly, the air flow of the accommodating part (2) forms a circulation passage consisting of the drum (24) and the tub (21) through the duct (7).

The pressure imbalance caused by the start of the rotation of the fan 8 or the rotation of the drum 24 at the start of drying may cause some air to move in one direction through the vent 6 . However, after a certain period of time has elapsed from the time when drying is started, the amount of inflow and outflow through the single vent part 6 is balanced with each other. Therefore, the total amount of air moving through the vent part 6 is close to zero. This is because when air moves in only one direction through the vent 6 , the amount of air inside the tub 21 increases infinitely or the inside of the tub 21 reaches a vacuum state.

When a preset time elapses from the start of drying, the operation of the hot air supply units 7 , 8 , and 9 is stopped, and the high-temperature clothes accommodated in the drum 24 are cooled.

Specifically, the spraying parts 35 , 37 , 39 located inside the discharge part spray water downward toward the filter 217 to remove foreign substances including lint accumulated on the filter 217 . In this case, a water film is formed on the filter 217 . Since the filter 217 is provided over the entire cross-sectional area of the outlet, the outlet is blocked by this water film. Accordingly, the flow path formed in the duct 7 is also blocked.

When the water film is formed, the fan 8 starts operation. When the fan (8) starts to operate, the air inside the tub (21) is not drawn into the duct (7) as the water film blocks the duct (7). Accordingly, while the internal pressure of the duct 7 is lowered, the external air of the tub 21 is introduced into the duct 7 through the tolerance formed in the duct 7 including the portion where the heat exchanger is installed.

Such tolerances can be established in particular in the part where the heat exchanger is installed. As the evaporator 91 and the condenser 93 of the heat exchanger can be bolted to the duct 7 and further the refrigerant pipe 99 is provided through the duct 7, the possibility of occurrence of tolerance is large. .

The air introduced into the duct 7 through the tolerance is supplied into the tub 21 by the fan 8 to cool the clothes accommodated in the drum 24 and then discharged through the vent unit 6 .

The cooling effect in the case of cooling by operating the fan 8 after the duct 7 is blocked by the water film is greater than the cooling effect when the duct 7 is not blocked because the water film is not formed. This is because when the duct 7 is not blocked, the air only circulates through the drum 24 , the tub 21 and the duct 7 , and no new air is introduced from the outside.

Since the duct 7 is connected to the upper surface of the filter 217 and the lower surface of the filter 217 is exposed inside the tub 21, when the fan 8 is operated, The pressure is less than the pressure acting on the lower surface of the filter 217 . The force due to the difference in pressure acts upward on the filter 217 .

Accordingly, when the fan 8 is operated, the water film formed on the filter 217 is simultaneously exerted by the force due to the pressure difference acting upward and the gravity G acting downward.

At this time, if the rpm of the fan 8 is set too high, the magnitude of the force due to the difference in pressure acting on the water film becomes larger than the size of gravity, so the sum of the forces acts upward, and thus the water film can be easily removed. . Conversely, if the rpm of the fan 8 is set too low, the magnitude of the force due to the difference in pressure acting on the water film becomes smaller than the size of gravity, so the sum of the forces acts downward, and the water film can be easily removed as well. .

Therefore, the rpm of the fan 8 must be adjusted so that the water film formed on the filter 217 is maintained for a preset time. Specifically, the rpm of the fan 8 may be adjusted so that a force is applied in a direction opposite to the direction in which gravity acts on the water film formed on the filter 217 . In addition, the rpm of the fan 8 may be adjusted so that a force of a magnitude corresponding to the magnitude of gravity acting on the water film formed on the filter 217 acts.

Meanwhile, the drum 24 may rotate while cooling the high-temperature clothes accommodated in the drum 24 . This is to further increase the cooling effect by evenly exposing the clothes accommodated in the drum 24 to the introduced external air.

When the drum 24 rotates to cool clothes, the wind induced by the drum 24 is formed along the inner circumferential surface of the tub 21 , thereby affecting the water film. As described above, since the water film blocking the duct 7 must be maintained when the clothes are cooled, the rpm of the drum 24 is determined according to the position of the filter 217 and the rpm of the fan 8 .

For example, when the filter 217 is provided at a point spaced apart along the circumferential surface by a predetermined angle θ from the highest point among the circumferential surfaces of the tub 21, the drum 24 is The wind induced by the rotation of the drum 24 itself applies a force to the water film in the direction of gravity or in the opposite direction. On the other hand, when the fan 8 rotates for cooling, a force acts on the water film in the opposite direction to the direction in which gravity acts. Accordingly, the rpm of the drum 24 is set in consideration of the fact that the water film can be maintained for a long time when the force by the rotation of the drum 24, the force by the rotation of the fan 8, and gravity are balanced.

That is, when the water film is maintained for a long time to increase the cooling effect, the rotation direction R of the drum 24 is changed so that the direction of the wind caused by the rotation of the drum 24 is formed in the opposite direction to the direction in which gravity acts. can be set. In this case, although the rpm of the drum 24 is adjusted to have various sizes, the effect on the water film is relatively small compared to the rotation direction of the drum 24 .

In order to remove the water film from the filter 217 , the rotational direction of the drum 24 may be set so that the direction of wind caused by the rotation of the drum 24 is formed in a direction in which gravity acts. In this case, the larger the rpm of the drum 24, the larger the size of the wind, so the water film will be removed quickly.

Hereinafter, a method of controlling the clothes treatment apparatus 100 according to an embodiment of the present invention will be described in detail with reference to FIG. 4 . 4 is a flowchart illustrating a control method of the laundry treatment apparatus 100 according to an embodiment of the present invention.

4 , the control method according to an embodiment of the present invention includes a drying step in which clothes are dried (S410), a flow path blocking step in which the duct 7 is blocked (S440), and a cooling step in which clothes are cooled (S450). includes

The drying step ( S410 ) is a step in which hot air is supplied to the receiving unit 2 to dry the clothes accommodated in the receiving unit 2 . In this drying step (S410), the drum rotating step (S411) in which the controller 16 controls the drum driving unit 25 by supplying power to the stator 251 so that the drum 24 rotates, the air in the accommodating unit 2 It includes a hot air supply step (S414) in which the controller 16 controls the fan 8 and the heat pump 9 to be dehumidified and heated after being introduced into the duct 7 .

The hot air supply step (S414) is a first circulation step (S412) in which the controller 16 supplies and controls power to the fan motor 83 so that the impeller 81 rotates and the refrigerant circulates along the refrigerant pipe 99. A heat exchange step (S413) in which the controller 16 controls the expansion valve 97 and the compressor 95 is included.

In the first circulation step S412 , the controller 16 may control the power supplied to the fan motor 83 so that the impeller 81 maintains a preset rpm.

The heat exchange step ( S413 ) is a step of performing heat exchange with air while the refrigerant passes through the evaporator 91 , the compressor 95 , the condenser 93 , and the expansion valve 97 .

Power may be continuously supplied to the stator 251 of the driving unit so that the rotation of the drum 24 is maintained during the hot air supply step ( S414 ). This is because it is advantageous to shorten the drying time for the clothes to be stirred in the drum 24 through the rotation of the drum 24 .

When the drying step (S410) is started, the time required for the drying step (S410) is continuously measured, and it is determined whether this measurement time has reached the time obtained by subtracting the total total cooling set time from the total set time (S420) .

Here, the total set time means the estimated time required from the start of the drying step (S410) to the end of the cooling step (S450). The measurement time means the time measured from after the start of the drying step (S410). Total cooling setting time It means the time taken from the end of the drying step (S410) to the end of cooling of the clothes.

The total setting time and the total cooling setting time may be set by the controller 16 according to the amount of clothing stored in the drum 24, respectively, and according to the type of control command selected by the user through the input unit 151 16) may be provided to set.

Meanwhile, although not shown in FIG. 4 , when the drying step S410 is started, the control method according to an embodiment of the present invention determines whether the drying level of the clothes stored in the drum 24 has reached the reference drying level in addition to the above-described time measurement. It may be determined whether the hot air supply step (S414) is stopped by determining whether or not.

A sensor (not shown) that is provided to contact the clothes stored inside the drum 24 and outputs different electrical signals according to the moisture content of the clothes, and the duct 7 is provided to determine whether the drying level of the clothes has reached the reference dryness level It can be detected through a sensor (not shown) that senses the temperature of the air discharged from the tub 21 . As the drying step (S410) proceeds, the drying degree of the clothes increases (the moisture content of the clothes decreases), and the amount of heat exchange between the hot air supplied to the tub 21 and the clothes decreases (the temperature of the air discharged from the tub 21) will increase), so that the controller 16 may determine whether the dryness level of the clothes has reached the reference dryness level by comparing the electrical signal provided by each sensor with a preset reference value.

On the other hand, when the measurement time exceeds the time obtained by subtracting the total cooling set time from the total set time (S420-N), the time measurement is continuously performed while the drying step (S410) is continuously performed.

If the measurement time is less than the total set time minus the set total cooling time (S420-Y), the hot air supply is stopped (S430).

When the hot air supply is stopped, the flow path blocking step (S440) of blocking the flow path formed in the duct 7 is performed. In order to block the flow path, water is injected from the injection units 35 , 37 , 39 located above the filter 217 . Since the filter 217 is provided over the entire cross-sectional area of the duct 7 and has a mesh structure, when water is sprayed onto the filter 217, the water film covers the entire cross-sectional area of the duct 7 by the surface tension of the water. is formed Accordingly, the duct 7 is blocked so that the air in the receiving portion 2 is discharged to the outlet by such a water film and cannot move along the duct 7 .

On the other hand, in the filter 217 , since the air inside the receiving unit 2 enters the duct 7 through the upper surface of the filter 217 through the lower surface of the filter 217 , foreign substances are deposited on the lower surface of the filter 217 . this will accumulate Accordingly, when the spraying units 35 , 37 , and 39 spray water from the upper side of the filter 217 to the filter 217 , foreign substances are easily removed from the lower surface of the filter 217 . Accordingly, the flow path blocking step S440 may be referred to as a filter 217 washing step. The number of times and time of spraying water for cleaning the filter 217 may be preset.

On the other hand, when the spraying units 35 , 37 , and 39 spray water to the filter 217 to form a water film, a portion of the sprayed water forms a water film, and the remaining portion of the sprayed water falls downward from the filter 217 . There may be a problem in that the clothes that are drawn into the drum 24 and are dried become wet again.

Accordingly, in the flow path blocking step ( S440 ), the drum 24 may rotate in one direction to prevent the clothes inside the drum 24 from getting wet again by the water falling from the filter 217 . The rotation direction of the drum 24 may be set according to the position of the filter 217 .

Specifically, since the filter 217 is installed to be spaced apart along the circumferential surface by a certain angle θ from the top of the circumferential surface of the tub 21 with respect to the center of the tub 21, the drum 24 has one side of the tub ( 21) rotates from the first position facing the uppermost end of the circumferential surface toward the second position facing the filter 217, the direction of rotation is so that one side rotates from the first position to the second position to form an acute angle. can be set. In other words, the rotational direction of the drum 24 may be set so that the moving direction of the meeting point of the drum 24 and the water at the moment the water falling from the filter 217 and the drum 24 meet is inclined downward.

In this case, the rpm of the drum 24 may be set to the maximum rpm within an available range.

The cooling step (S450) is performed after the flow path blocking step (S440) in which the flow path formed in the duct 7 is blocked. This cooling step ( S450 ) is a step of supplying outside air into the drum 24 in order to lower the temperature of the high-temperature clothes accommodated in the drum 24 .

The cooling step (S450) is a drum rotation step (S451) in which the controller 16 supplies electric power to the stator 251 to control the drum driving unit 25 so that the drum 24 rotates, and the fan 8 is operated by and a second circulation step (S453) in which outside air is introduced into the duct 7 through the tolerance and supplied into the tub 21 .

In the second circulation step (S453), outside air is supplied to the inside of the duct 7 through the tolerance formed in the duct 7 by the operation of the fan 8 installed adjacent to the inlet. In the second circulation step ( S453 ), the rpm of the fan ( 8 ) is set enough to supply sufficient outside air to the clothes accommodated in the drum ( 24 ).

When the fan 8 rotates while the drum 24 rotates to supply outside air into the tub 21 , the step of determining whether the measured temperature of the air discharged from the tub 21 exceeds the reference temperature is performed (S460).

The drum 24 rotates while the fan 8 rotates, because when the drum 24 rotates, heat exchange between the outside air and the clothes is better and the cooling is faster.

As the supplied outdoor air and clothes exchange heat, the measured temperature of the air discharged to the tub 21 is gradually lowered. When the measured temperature exceeds the reference temperature (S460-N), that is, when the user does not feel uncomfortable when touching the clothes, the cooling step (S450) is performed without terminating.

When the measured temperature is less than or equal to the reference temperature (S460-Y), the control method according to an embodiment of the present invention is terminated.

On the other hand, instead of the step of determining whether the measured temperature of the air exceeds the reference temperature, the measurement time measured from the start of the cooling step (S450) is longer than the cooling set time expected to be required to perform the cooling step (S450). A determining step may be performed (S470).

If the measurement time is longer than the cooling set time (S470-Y), it is determined that the clothes are sufficiently cooled, and the cooling step (S450) is terminated.

If the measurement time is less than the cooling set time (S470-N), it is determined that the clothes are not sufficiently cooled, and the cooling step (S450) is continuously performed.

Although the above-described embodiment has been described with reference to the clothes treatment apparatus 100 capable of drying clothes and washing clothes, the control method of the present invention can also be applied to the clothes treatment apparatus 100 for only drying clothes. In the case of the clothes treatment apparatus 100 for the purpose of drying clothes only, the tub 21 provided in the accommodating part 2 may be omitted. In this case, the duct 7 may be positioned outside the drum 24 to circulate the air inside the drum 24 .

As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited thereto, and the technical spirit of the present invention and the following by those of ordinary skill in the art to which the present invention pertains Of course, various modifications and variations are possible within the equivalent scope of the claims to be described.

100: clothes processing device 1: cabinet 2: receiving unit
21: tub 217: filter 219: inlet
24: drum 25: drum driving unit 27: pressure sensing unit
271: communication pipe 273: pressure sensor 31: water supply pipe
33: first valve 35: second water supply pipe 37: second valve
39: injection unit 41: drain pipe 43: pump
7: duct 8: fan 81: impeller
83: fan motor 9: heat pump 91: evaporator
93: condenser 95: compressor

Claims (15)

a tub in which washing water is stored; a drum rotatably provided inside the tub to accommodate clothes; a duct positioned above the tub to form a circulation passage through which air inside the tub circulates; a fan provided downstream of the circulation passage to move air inside the tub; a heat pump for generating hot air by dehumidifying and heating the air introduced into the duct; a filter provided upstream of the flow path formed in the duct to remove foreign substances from the air; a spraying unit for spraying water to the filter; and a vent unit communicating the tub with outside air, wherein the control method of the laundry treatment apparatus comprises: drying or cooling the clothes in the drum,
a drying step in which the hot air is supplied to the tub to dry clothes;
a flow path blocking step in which the hot air supply is stopped and the duct is blocked; and
A cooling step in which the clothes are cooled as the air of the tub is discharged to the outside through the vent unit;
In the flow path blocking step, the spraying unit sprays water to the filter to form a water film,
In the cooling step, the clothes are cooled by operating the fan so that outside air is introduced into the duct through the tolerance of the duct, and the hot air of the tub is discharged to the outside through the vent unit. control method. delete delete delete According to claim 1,
The filter is exposed to the tub while being provided on the top of the tub,
In the cooling step, the rpm of the fan is adjusted so that the water film formed on the filter is maintained for a preset time. According to claim 1,
In the cooling step, the rpm of the fan is adjusted so that a force is applied to the water film formed on the filter in a direction opposite to the direction in which gravity acts. 7. The method of claim 6,
In the cooling step, the rpm of the fan is adjusted so that a force of a magnitude corresponding to the magnitude of gravity acting on the water film formed on the filter acts. According to claim 1,
In the cooling step, the control method of the laundry treatment apparatus, characterized in that the drum rotates at a preset rpm (rpm). According to claim 1,
In the step of blocking the flow path, at least one of a rotation direction and an RPM (rpm) of the drum is adjusted to prevent water falling from the outside. 10. The method of claim 9,
The control method of the laundry treatment apparatus, characterized in that the rotation of the drum is performed while the spraying unit sprays water. a tub in which washing water is stored and provided with an outlet for discharging internal air and a suction port for sucking air into the tub; a drum rotatably provided inside the tub to store clothes; a duct provided on the upper portion of the tub, one end connected to the outlet and the other end connected to the outlet to form a circulation path through which the air inside the tub circulates; a vent unit communicating the inside of the tub with outside air; a filter provided at the outlet to remove foreign substances from the air; a spraying unit for spraying water to the filter; a fan provided in the duct and disposed adjacent to the outlet and moving air; A method for controlling a laundry treatment apparatus comprising: a heat exchanger provided in the duct and disposed between the filter and the fan to exchange heat with air,
a drying step in which hot air is supplied to the tub by the operation of the heat exchanger and the fan to dry clothes;
a flow path blocking step in which the operation of the heat exchanger and the fan is stopped, and the spray unit sprays water to the filter to form a water film so that the duct is blocked; and
a cooling step of operating the fan to allow outside air to be introduced into the duct through the tolerance of the duct, and cooling the clothes as the air from the tub is discharged to the outside through the vent unit; control method. delete 12. The method of claim 11,
The outlet is provided on the upper circumferential surface of the tub,
In the cooling step, the rpm of the fan is adjusted so that the water film formed on the filter is maintained for a preset time. 12. The method of claim 11,
In the step of blocking the flow path, at least one of a rotation direction and an rpm (rpm) of the drum is adjusted to prevent water falling from the water film. 15. The method of claim 14,
In the step of blocking the flow path, the drum is rotated while the spraying unit sprays water.

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