WO2021187915A1

WO2021187915A1 - Clothing treatment apparatus

Info

Publication number: WO2021187915A1
Application number: PCT/KR2021/003365
Authority: WO
Inventors: 노현우; 김성룡; 홍상욱
Original assignee: 엘지전자 주식회사
Priority date: 2020-03-18
Filing date: 2021-03-18
Publication date: 2021-09-23

Abstract

A clothing treatment apparatus according to one aspect of the present disclosure comprises: a cabinet provided with an inlet port through which clothing is introduced; a tub provided inside the cabinet and having a tub inlet part through which the clothing can be introduced; a drum rotatably provided inside the tub and accommodating the clothing; a driving unit for rotating the drum; an induction module for heating the drum; a gasket provided to be stretchable and connecting the inlet port and the tub inlet part; and a communication part for communicating the inside of the tub and the outside of the cabinet. During a drying cycle of the clothing, the revolutions per minutes (RPM) of the drum can be increased to a target RPM at which there is at least one section in which the tub can resonate in accordance with the rotation of the drum.

Description

clothes processing equipment

The present disclosure relates to a laundry treatment apparatus.

In general, the clothes treatment apparatus may include a washing machine, a dryer, a device for refreshing clothes, and the like. The washing machine may be a washing machine combined with a drying function.

The washing machine rotates a drum in a tub in which water is stored to remove contaminants from the laundry inside the drum. The washing machine may be provided with a heating means for heating water or drying laundry.

The dryer rotates a drum in a cabinet and applies heat to the laundry inside the drum to dry the laundry.

Electric heaters, gas heaters, and heat pumps each have advantages and disadvantages as heating means in the laundry treatment apparatus. concepts have been provided.

However, these prior technologies only disclose basic concepts for performing induction heating in a washing machine, and specific induction heating module configurations, connection and action relationships with basic configurations of a laundry treatment apparatus, and efficiency enhancement and safety Specific measures or configurations are not presented.

A coil is wound on an induction heating module provided in a laundry treatment apparatus such as a washing machine or dryer, and heat can be transferred to a heating object (drum) by an induced current generated by applying a current to the coil.

In addition, since the laundry treatment apparatus provided with the induction heating module employs a heating method of directly heating the drum, the drying method may be performed in a different manner from that of the laundry treatment apparatus without the induction heating module.

Korean Patent Application Laid-Open No. 10-2016-0108329 adopts a method of drying laundry by continuously circulating air through a duct circulating a tub. However, apart from the fact that the induction module is provided to increase energy efficiency, Korean Patent Application Laid-Open No. 10-2016-0108329 does not specifically disclose the correlation between drum rotation and drying.

SUMMARY OF THE INVENTION The present disclosure aims to solve the above and other problems.

It is an object of the present disclosure to provide a laundry treatment apparatus, such as a dryer, a washing machine or a washing machine combined dryer, or an apparatus for refreshing clothes, which can improve drying performance by controlling drum rotation.

Another object of the present disclosure is to provide a laundry treatment apparatus capable of improving drying performance by flowing air in and out using resonance of a tub.

Another object of the present disclosure is to provide a laundry treatment apparatus capable of improving drying performance by generating air discharge and inflow at least once each in a section in which the RPM of the drum increases and/or decreases.

Another object of the present disclosure is to provide a laundry treatment apparatus capable of improving drying quality by controlling rotation of a drum in a laundry treatment apparatus equipped with an induction module.

Another object of the present disclosure is to provide a laundry treatment apparatus capable of inducing resonance of a tub by controlling the rotation of a drum, thereby discharging wet air and sucking in dry air by changing the volume of an inner space of the tub.

Another object of the present disclosure is to provide a clothes treatment apparatus capable of improving drying quality by injecting cooling water when drying clothes.

Another object of the present disclosure is to provide a laundry treatment apparatus capable of ensuring drying quality by continuously injecting cooling water in a cold air mode in which an induction module does not operate.

The laundry treatment apparatus according to an aspect of the present disclosure for achieving the above or other objects may improve drying performance by controlling drum rotation.

In addition, the laundry treatment apparatus according to an aspect of the present disclosure may use the resonance of the tub to discharge moist internal air and introduce dry external air to improve drying performance.

In addition, the laundry treatment apparatus according to an aspect of the present disclosure may improve drying performance by generating air discharge and inflow at least once, respectively, in a section in which the RPM of the drum increases and/or decreases.

According to an aspect of the present disclosure, there is provided a laundry treatment apparatus comprising: a cabinet provided with an inlet into which clothes are put; a tub provided in the cabinet and having a tub input unit into which the clothes can be put; a drum rotatably provided in the tub and accommodating the clothes; a driving unit for rotating the drum; an induction module for heating the drum; a gasket connected to the inlet and the tub inlet and provided to be stretchable; and a communication unit for communicating the inside of the tub with the outside of the cabinet, wherein a section in which the tub can resonate in response to the rotation of the drum exists at least once during the drying cycle of the clothes. The RPM of the drum can rise up to (revolutions per minute).

When the RPM of the drum reaches the target RPM, the drum is driven at the target RPM for a predetermined time, and after the predetermined time, the RPM of the drum may decrease.

The RPM increase rate in the section in which the RPM of the drum increases may be smaller than the RPM decrease rate in the section in which the RPM of the drum decreases.

The driving unit may sequentially and repeatedly perform rotation in which the RPM of the drum increases to the target RPM, is maintained, and decreased.

The laundry treatment apparatus according to an aspect of the present disclosure may further include a cooling water supply valve that is opened to inject cooling water into the tub when the induction module and the driving unit are operated together.

The driving unit may rotate so that the RPM of the drum rises to the target RPM after the operation of the induction module is finished, or rotates so that the RPM of the drum rises to the target RPM when the induction module does not operate have.

According to an aspect of the present disclosure, the method further includes a cooling water supply valve that is opened to introduce cooling water into the tub, wherein the cooling water supply valve may continue to be opened for a predetermined time after the operation of the induction module is finished.

The target RPM may be higher than an RPM in which the clothes are rotated by closely contacting the inner circumferential surface of the drum.

Also, the target RPM may be 360 RPM to 440 RPM.

The laundry treatment apparatus according to an aspect of the present disclosure further includes a tub support part that damps vibration of the tub and supports the tub in the cabinet, wherein the tub support part resonates in response to rotation of the drum. A hinge shaft may be provided so as to vibrate along the longitudinal direction of the cabinet.

The tub support part may include a first support part fixed to an upper surface of the cabinet, and a second support part fixed to a lower surface of the cabinet, and the second support part may include the hinge shaft.

The induction module may be spaced apart from the drum. The induction module may be installed in the tub. The induction module may be fixed to the tub. In a laundry treatment apparatus such as a dryer without a tub, the induction module may be disposed inside a case or on an inner wall.

The induction module may be disposed in a position spaced apart from the drum on the upper side, lower side, left side, or right side of the drum inside the case in a tubless laundry treatment apparatus such as a dryer.

The induction module may be located at an outer upper portion of the drum.

The induction module may generate a magnetic field. The induction module heats the drum using a magnetic field.

The drum may include a cylindrical body and a through hole formed in the body.

The laundry treatment apparatus according to an aspect of the present disclosure may further include a controller configured to control operations of the driving unit and the induction module.

The communication unit may include a cabinet communication unit connected to the cabinet, a tub communication unit connected to the inside of the tub, and a bellows unit connecting the cabinet communication unit and the tub communication unit.

As an example to solve the above example, when there is an imbalanced mass in the drum, the tub is greatly shaken due to resonance during the process of increasing the rotation speed. It provides a clothes processing apparatus.

In addition, there is provided a control method of a laundry treatment apparatus in which the rotation speed of the drum is increased to the RPM at which the tub excessively vibrates and then changed back to the normal rotation speed when the target RPM is reached.

In addition, the present invention provides a laundry treatment apparatus and a control method thereof, which improve drying quality by always opening the cooling water supply valve when the induction module is not in operation by using on/off control of the cooling water supply valve when the induction module is operating.

In addition, there is provided a laundry treatment apparatus in which the step of vibrating the tub is repeatedly performed, and a method for controlling the same.

More specifically, a cabinet having an inlet into which clothes are put, a tub provided in the cabinet and having a tub input part into which clothes can be put, a tub support part that dampens vibrations of the tub and supports the tub in the cabinet; A drum rotatably provided in the tub, at least a portion of which is made of metal, for accommodating laundry, an induction module provided on an outer circumferential surface of the tub to heat the drum by applying current to a coil, and connecting the inlet and the tub inlet In the control method of a clothes treatment apparatus comprising: a flexible gasket and a communication part for communicating the inside of the tub and the outside of the cabinet, wherein the drying step in the laundry treatment device comprises an induction operation step in which the induction module is operated; and at least one of a tub vibrating step in which the tub vibrates back and forth in the longitudinal direction of the tub according to the rotation of the drum. an RPM raising step in which the RPM rises to a target RPM that exists at least once, an RPM maintaining step rotating to the target RPM after reaching the RPM raising step, and an RPM decreasing step in which the RPM decreases after the RPM maintaining step ends; It provides a control method of a laundry treatment apparatus comprising a.

In addition, there is provided a control method of a laundry treatment apparatus in which the RPM increasing step, the RPM maintaining step, and the RPM decreasing step are repeated a plurality of times and the tub vibrating step is repeatedly performed.

In addition, the induction operation step and the tub vibrating step provide a control method of the laundry treatment apparatus is performed simultaneously.

In addition, there is provided a control method of a laundry treatment apparatus in which a coolant input amount is controlled through opening and closing of a coolant water supply valve for introducing coolant into the tub when the induction operation step and the tub vibration step are performed together.

In addition, the tub vibrating step provides a method of controlling a laundry treatment apparatus that is started after the induction operation step is finished or is performed without the induction operation step proceeding.

In addition, there is provided a control method for a laundry treatment apparatus, wherein the cooling water supply valve for introducing cooling water into the tub is controlled to be continuously opened when the tub vibrating step is performed.

In addition, the target RPM is 360 RPM to 440 RPM to provide a control method of the laundry treatment apparatus.

In addition, there is provided a control method of the laundry treatment apparatus, characterized in that the target RPM is 400RPM.

In addition, the target RPM is set higher than the RPM in the dehydration cycle in which the clothes are brought into close contact with the inner circumferential surface of the drum to remove moisture.

In addition, the tub support portion is provided with a hinge shaft to vibrate along the longitudinal direction of the cabinet when the tub resonates in response to the rotation of the drum, so that the tub moves in the width direction of the cabinet in the RPM raising step and the RPM decreasing step. Provided is a method for controlling a laundry treatment apparatus that is controlled to vibrate more in the longitudinal direction of the cabinet than the vibration of

In addition, the present invention provides a method of controlling a laundry treatment apparatus in which the RPM increasing speed in the RPM increasing step is controlled to be smaller than the RPM decreasing speed in the RPM decreasing step.

In addition, the tub vibrating step provides a control method of the laundry treatment apparatus that is started together with the induction operating step and is performed even after the induction operating step is finished.

In addition, a cabinet having an inlet into which clothes are put, a tub provided in the cabinet and having a tub input part into which clothes can be put, a tub support for damping vibration of the tub and supporting the tub to the cabinet, and the tub A drum rotatably provided in the interior, at least a portion of which is formed of metal, for accommodating laundry, a driving unit for rotating the drum, an induction module provided on an outer circumferential surface of the tub to heat the drum by applying a current to a coil, the inlet and and a gasket connecting the tub input part and being stretchably provided, a communication part communicating the inside of the tub and the outside of the cabinet, and a control unit controlling the operation of the driving unit and the induction module, wherein the control unit is configured to dry the clothes. The induction module and the driving unit are controlled to perform at least one of an operation of the induction module and an operation of vibrating the tub by adjusting the rotational speed of the drum, and the driving unit controls the drum so that the tub moves at the rotation RPM of the drum. The drum is controlled to increase the RPM of the drum up to a target RPM in which a correspondingly resonable section exists at least once, and the drive unit is controlled to be driven at the target RPM for a predetermined time when the target RPM is reached, and the drive unit Provided is a laundry treatment apparatus controlled to decrease the RPM after operating at the target RPM.

In addition, the control unit provides a laundry treatment apparatus, characterized in that sequentially repeats the control so that the RPM of the drum rises, maintains, and decreases to the target RPM.

In addition, the control unit provides a laundry treatment apparatus for simultaneously controlling the operation of the induction module and the operation of the driving unit.

In addition, the control unit provides a laundry treatment apparatus that controls the amount of cooling water input by opening and closing the cooling water supply valve for introducing cooling water into the tub when the induction module and the driving unit are operated together.

Also, there is provided a laundry treatment apparatus in which the operation of the driving unit is started after the operation of the induction module is terminated or is performed without the operation of the induction module.

The control unit provides a laundry treatment apparatus, wherein the control unit controls the cooling water supply valve for introducing the cooling water into the tub to be continuously opened while controlling the operation of the driving unit.

In addition, the target RPM is higher than the RPM in the dehydration cycle for removing moisture by attaching the clothes to the inner circumferential surface of the drum.

In addition, there is provided a laundry treatment apparatus provided with a hinge shaft on the tub support part so that the tub vibrates along the longitudinal direction of the cabinet when the tub resonates in response to the rotation of the drum.

According to at least one of the embodiments of the present disclosure, the volume of the internal space of the tub is changed as the tub resonates according to the rotation of the drum and moves in the front-rear direction of the cabinet, thereby naturally discharging wet air and sucking in dry air. Moisture can be removed.

That is, when the tub vibrates, the absolute humidity of the tub interior space may decrease compared to when the tub does not vibrate. Thereby, drying performance can be improved.

In addition, drying quality can be improved by appropriately supplying cooling water.

1 is a view showing an appearance of a clothes treatment apparatus according to an embodiment of the present disclosure;

FIG. 2 is a view showing the internal configuration of the laundry treatment apparatus of FIG. 1; FIG.

3 is an exploded perspective view of the induction module of the laundry treatment apparatus according to the present embodiment;

4 is a view showing a part of the tub according to the present embodiment

5 is a view showing a part of the interior of the cabinet according to the present embodiment;

6 is a block diagram of a laundry treatment apparatus according to the present embodiment;

7 is a view showing a washing procedure according to the present embodiment;

8 is a view showing the drum RPM in the tub vibration step according to the present embodiment

9 is a view showing a tub vibrating step according to the present embodiment

10 is a plan view of the interior of the laundry treatment apparatus according to the present embodiment;

11 is an operation diagram of the laundry treatment apparatus according to the present embodiment;

12 is a view showing a drying cycle of a clothes treatment apparatus according to another embodiment;

13 is a view showing a drying cycle of a clothes treatment apparatus according to another embodiment;

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components are assigned the same reference numerals regardless of reference numerals, and overlapping descriptions thereof will be omitted.

In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed in the present specification is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present disclosure , should be understood to include equivalents or substitutes.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

Furthermore, although each drawing is described for convenience of description, it is also within the scope of the present disclosure that those skilled in the art implement other embodiments by combining at least two or more drawings.

Terms including an ordinal number, such as first, second, etc., may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that no other element is present in the middle.

It is also understood that when an element, such as a layer, region, or module, is referred to as being “on” another element, it may be directly on the other element or intervening elements may exist in between. There will be.

Hereinafter, a laundry treatment apparatus and a control method thereof according to an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. Hereinafter, a washing machine will be described as a representative example as a laundry treatment apparatus of the present disclosure. However, the laundry treatment apparatus of the present disclosure is not limited thereto.

FIG. 1 is a view showing an external appearance of a laundry treatment apparatus according to an embodiment of the present disclosure, and FIG. 2 is a view showing an internal configuration of the laundry treatment apparatus of FIG. 1 .

When defining a direction to help understanding of the detailed structure of the laundry treatment apparatus, a direction toward the door 12 with respect to the center of the laundry treatment apparatus may be defined as a front.

In addition, a direction opposite to the direction toward the door 12 may be defined as a rear direction, and a right and left direction may be defined depending on the front-rear direction defined above.

Hereinafter, it will be described with reference to FIGS. 1 and 2 .

A laundry treatment apparatus according to an embodiment of the present disclosure includes a cabinet 1 forming an exterior, a tub 2 provided inside the cabinet 1 , and a rotatable object provided inside the tub 2 . (For example, a laundry object, a drying object, or a refresh object) may include a drum 3 in which is accommodated.

For example, when clothes are washed with washing water, they can be called laundry objects, when wet clothes are dried using heat, they can be called drying objects, and dry clothes can be refreshed using hot air, cold air, or steam. In the case of (refresh), this can be called a refresh object. Accordingly, clothes can be washed, dried, or refreshed through the drum 3 of the clothes treatment apparatus.

The cabinet 1 may include an inlet provided at the front of the cabinet 1 through which an object enters and exits, and the cabinet 1 has a door rotatably connected to the cabinet 1 to open and close the inlet. (12) may be provided.

The door 12 may include an annular door frame 121 and a see-through window 122 provided in a central portion of the door frame 121 .

A detergent box 7 may be provided on the upper front side of the laundry treatment apparatus. Detergent, fabric softener, etc. can be supplied through the detergent box 7 . The detergent box 7 may be provided with a handle so that a user can slide it toward the front of the cabinet 1 to enable opening and closing.

A control panel 5 may be provided on the upper front side of the laundry treatment apparatus. The control panel 5 may be provided for a user interface. A user's various inputs may be performed, and information according to the input or various information of the clothes processing apparatus may be displayed. That is, the control panel 5 may include a manipulation unit for a user's manipulation and a display for displaying information to the user.

The tub 2 has a longitudinal axis parallel to the lower surface of the cabinet 1 or is provided in a cylindrical shape maintaining a predetermined angle to form a space in which water can be stored, and a tub opening at the front to communicate with the inlet. (21) is provided. The tub 2 may include the tub opening 21 and the tub body 22 constituting the body of the tub. Accordingly, the tub body 22 may be provided in a cylindrical shape, and the tub opening 21 may be provided to correspond to the shape of the tub body 22 .

The tub 2 may be installed in the cabinet 1 by the

tub support parts

131 and 132 . Specifically, the

tub support parts

131 and 132 may include a first support part 131 and a second support part 132 .

A first support 131 fixed to the upper surface of the cabinet 1 may be connected to the upper surface of the tub 2 . Vibration generated in the tub 2 and transmitted to the cabinet 1 may be attenuated through the first support part 131 .

It may be fixed to the lower surface (bottom surface) of the cabinet 1 by a second support part 132 , and the second support part 132 includes a support bar 1321 and a damper 1322 to provide the drum 3 . ), the vibration generated in the tub 2 may be attenuated by the rotation.

Specifically, the support bar 1321 and the damper 1322 are provided as a pair and may be connected to the tub 2 . The support bar 1321 and the damper 1322 may be provided as one.

However, in order to reduce vibration in the width direction of the cabinet 1 among the vibrations of the tub 2, the tub 2 may be provided in pairs spaced apart from the width direction of the tub 2 or the center of the cabinet 1 in the width direction. have.

The support bar 1321 may be provided to be rotatable based on the longitudinal direction of the cabinet 1 . That is, the tub 2 may vibrate more in the longitudinal direction of the cabinet 1 than in the width direction of the cabinet 1 .

That is, the support bar 1321 may be provided with a hinge shaft h so as to be able to rotate in the front-rear direction of the cabinet 1 . That is, the

tub support parts

131 and 132 may be provided with a hinge shaft h to be supported inside the cabinet even when the tub 2 vibrates in the front and rear directions of the cabinet 1 .

That is, the tub 2 can be supported inside the cabinet 1 through the first support part 131 and the second support part 132 , and vibration generated from the tub 2 can be damped. can

The drum 3 is provided in a cylindrical shape with a longitudinal axis parallel to the lower surface (bottom surface) of the cabinet 1 or maintaining a predetermined angle to accommodate an object, and communicates with the tub opening 21 at the front. A drum opening 31 may be provided. An angle between the central axis of the tub 2 and the drum 3 with respect to the bottom surface may be the same. That is, the predetermined angle may mean the same angle.

The drum 3 may include a cylindrical body and a through hole 33 formed in the body. A plurality of through holes 33 penetrating the drum 3 may be formed on the outer peripheral surface of the drum 3 . Through the through hole 33, air and washing water may be introduced between the inside of the drum 3 and the inside of the tub 2 .

A lifter 35 may be provided on the inner circumferential surface of the drum 3 to agitate the object when the drum 3 rotates. The lifters 35 may extend along the longitudinal direction of the drum 3 from the inner circumferential surface of the drum 3 and may be provided in plurality on the inner circumferential surface of the drum 3 .

The drum 3 may be rotated by a driving unit 6 provided at the rear of the tub 2 .

The driving unit 6 includes a stator 61 fixed to the rear surface of the tub 2, a rotor 63 rotating by an electromagnetic action with the stator, and a drum 3 and a rotor ( 63) may be provided as a rotating shaft 65 for connecting them.

The stator 61 may be fixed to the rear surface of the bearing housing 66 provided on the rear surface of the tub 2 , and the rotor 63 may have a rotor magnet 632 provided on the radially outer side of the stator 61 . ) and a rotor housing 631 connecting the rotor magnet 632 and the rotation shaft 65 .

A plurality of bearings 68 supporting the rotation shaft 65 may be provided inside the bearing housing 66 .

In addition, a spider 67 that easily transmits the rotational force of the rotor 63 to the drum 3 may be provided on the rear surface of the drum 3 , and the spider 67 receives the rotational power of the rotor 63 . The rotation shaft 65 for transmission may be fixed.

Meanwhile, the laundry treatment apparatus according to the present embodiment may include a water supply hose 70 receiving water from the outside, and the water supply hose 70 forms a flow path for supplying water to the tub 2 .

According to an embodiment of the present disclosure, cooling of the air is performed on the inner circumferential surface of the tub 20 and moisture is condensed and discharged. In other words, even if there is no circulation of air inside the tub 20, it can be dried by itself condensing moisture.

Cooling water may be supplied into the tub 20 to more effectively perform moisture condensation to improve drying efficiency. Cooling water may be introduced through the water supply hose (70). A valve 70a is disposed on the water supply hose 70 to open and close the water supply hose 70 . According to an embodiment of the present disclosure, the water supply hose 70 may be referred to as a cooling water hose for supplying cooling water, and the valve 70a disposed on the water supply hose 70 may also be referred to as a cooling water supply valve. Cooling water is supplied while the cooling water supply valve 70a is open (ON), and after being closed (OFF), the supply is cut off. In another embodiment, the cooling water hose and the water supply valve for supplying the cooling water may be provided separately from the water supply hose 70 .

The larger the surface area where the coolant and the tub 20 meet, that is, the larger the surface area that comes into contact with the coolant and air, is more advantageous. To this end, the cooling water may be supplied while being widely spread from the rear surface or one side or both sides of the tub 20 . Through this cooling water supply, the cooling water flows along the inner surface of the tub 20 to prevent it from being introduced into the drum.

Meanwhile, the laundry treatment apparatus according to the present embodiment may include a drainage unit 14 for discharging the water inside the tub 2 to the outside of the cabinet 1 . The drain unit 14 includes a drain pipe 142 that forms a drain passage through which water in the tub 1 moves, and a drain pump that generates a pressure difference inside the drain pipe 142 to be drained through the drain pipe 142 . (141).

In more detail, the drain pipe 142 includes a first drain pipe 1421 connecting the lower surface of the tub 2 and the drain pump 141 and one end of the drain pump 141 connected to the outside of the cabinet 1 . It may include a second drain pipe 1422 forming a flow path through which water moves.

Meanwhile, a gasket 13 may be provided between the inlet of the cabinet 1 and the tub opening 21 . The gasket 13 connects the tub opening 21 and the inlet 11 provided in the cabinet 1 . The gasket 13 serves to prevent a problem that water inside the tub 2 leaks into the cabinet 1 and a problem that vibration of the tub 2 is transmitted to the cabinet 1 .

The gasket 4 is provided to be stretchable so that airtightness can be maintained when the tub 2 vibrates along the longitudinal direction of the cabinet 1 . However, it does not mean airtightness and a perfect sealing state, and when the gasket 4 and the tub 2 are connected, the air may be provided so that it can move.

That is, in some cases, air may be introduced through the inlet 12 of the cabinet 1 .

A plurality of temperature sensors 133a and 133b may be provided in the tub 2 . The temperature sensors may measure the temperature inside the tub (2). The upper temperature sensor 133a is positioned above the tub 2 to measure the temperature of the air heated through the induction module 8 . The lower temperature sensor 133b may be positioned under the tub 2 to sense the temperature of wash water or wet air. That is, the plurality of temperature sensors may detect whether the air is heated to a target temperature by the induction module 8 . The driving of the induction module 8 may be controlled by the controller 9 to be described later based on the temperature measured by the temperature sensors.

3 is an exploded perspective view of the induction module of the laundry treatment apparatus according to the present embodiment.

Hereinafter, the induction module of the laundry treatment apparatus according to the present embodiment will be described in detail with reference to FIG. 3 .

The laundry treatment apparatus according to an embodiment of the present disclosure may include an induction module 8 for heating the drum 3 . The induction module 8 may heat the drum 3 for heating washing water or drying the laundry. The induction module 8 can inductively heat the drum 3 . The principle of heating the drum 3 using the induction module 8 is as follows.

The induction module 8 may be mounted on the outer peripheral surface of the tub 2 . The induction module 80 may generate a magnetic field by applying a current to the coil 81 on which the wire is wound. The induction module 8 serves to heat the circumferential surface of the drum 3 through the generated magnetic field. The wire may include a core wire and a coating surrounding the core wire. The core may be a single core. Of course, a plurality of core wires may be entangled to form one core wire. Accordingly, the thickness or wire diameter of the wire may be determined by the core wire and the coating thickness.

When an alternating current whose phase is changed flows through the coil 81 on which the wire is wound, the coil 81 forms a radial alternating magnetic field according to the Ampere circuit law.

The alternating magnetic field is concentrated toward a drum (metal material) made of a conductor having high magnetic permeability. The magnetic permeability refers to the degree to which a medium is magnetized with respect to a given magnetic field. At this time, according to Faraday's law of induction, an eddy current is formed in the drum 3, and the eddy current flows through the drum 3 made of a conductor, and the resistance of the drum 3 itself causes Joule heat (Joule). heat) so that the inner wall of the drum 3 is directly heated.

When the inner wall of the drum 3 is directly heated, the temperature of the air inside the drum 3 and the temperature of the laundry in contact with the inner wall of the drum 3 rise together. Therefore, since direct heating of laundry is possible, faster drying is possible compared to a drying apparatus using only a hot air drying method, which is an indirect heating method, or a low temperature dehumidifying drying method.

In the case of a laundry treatment apparatus having a washing function, washing water can be heated without a separate heating wire and flow path. Since the wash water continuously comes into contact with the inner and outer walls of the drum 3 heated to a high temperature, it is not necessary to form a separate flow path and a heating wire under the tub. And, according to the above-described method, it is possible to heat the wash water faster than the method in which a separate flow path and a heating wire are formed under the tub and heated using the method.

The induction module 8 according to this embodiment may include a coil 81 , a base housing 82 , and a module cover 83 .

The induction module 8 is provided on the outer surface of the tub 2 and can heat the drum 3 through a magnetic field generated by applying a current to the coil 81 . The induction module 8 may be provided on the tub 2 . The induction module 8 may be fixed to the tub 2 . The induction module 8 may be spaced apart from the drum 3 .

A laundry treatment apparatus such as a dryer may not include the tub 2 . In this case, the configuration applied to the tub (2) in the present specification may be applied to the drum (3). For example, in a laundry treatment apparatus such as a dryer without a tub 2 , the induction module 8 may be disposed inside a case or on an inner wall. The induction module 8 may be disposed at a position spaced apart from the drum 3 on the upper or lower side, left or right side of the drum 3 inside the case in a laundry treatment apparatus without a tub 2 such as a dryer. can The induction module 8 may be located on the outer side of the drum 3 .

The induction module 8 according to the present embodiment may include a base housing 82 provided to be spaced apart from the outer surface of the tub 2 by a predetermined interval.

The base housing 82 may be provided to receive and support the wound shape of the coil 81 . The base housing 82 may be provided in a shape corresponding to the outer peripheral surface (circumferential surface) of the tub 2 so that a predetermined distance from the tub 2 is uniformly spaced apart.

Accordingly, the amount of magnetic field transmitted through the base housing 82 does not vary depending on the position of the circumferential surface of the tub 2 , so that uniform heating is possible.

The tub 2 may be provided with a tub connection part 22 . The tub connection part 22 may be provided to fix the induction module 8 to the circumferential surface of the tub 2 . The base housing 82 and the tub 2 may be spaced apart by the length of the tub connection part 22 .

A housing connection part 821 may be provided in the base housing 82 to correspond to the position of the tub connection part 22 . The tub connection part 22 and the housing connection part 821 are coupled, so that the induction module 8 may be fixed to the outer circumferential surface of the tub 2 .

A coil 81 may be wound on the base housing 82 . The coil 81 is wound along the upper surface of the base housing 82 and may be provided a little shorter than a predetermined length than the length of the tub 2 .

Accordingly, it is possible to prevent other parts in the laundry treatment apparatus from being heated.

However, when the length of the tub 2 is too short, effective heat transfer may be difficult. Therefore, the tub 2 may be wound to be disposed close to the front surface and the rear surface of the tub 2 .

The module cover 83 may be provided on the upper surface of the coil 81 to correspond to the size of the base housing 82 . The module cover 83 may be coupled to the base housing 82 and mounted on the outer circumferential surface of the tub 2 .

The module cover 83 may include a cooling flow path connection part 832 provided to communicate with a module cooling duct 755 to be described later. Although the figure shows that the cooling passage connection part 832 is disposed at the center of the module cover 83 , the present invention is not limited thereto.

That is, depending on the structure in which the air is discharged from the induction module 8 , the cooling passage connection part 832 may be formed at various positions.

4 is a view showing a part of the tub according to the present embodiment, and FIG. 5 is a view showing a part of the interior of the cabinet according to the present embodiment.

4 and 5 , the induction module 8 may be provided on the outer peripheral surface of the tub 2 according to the present embodiment, in particular, on the upper outer peripheral surface.

In addition, a communication part 30 for communicating the outside of the cabinet 1, that is, the outside of the laundry treatment apparatus, and the inside of the tub 2, may be provided on the outer circumferential surface of the tub 2 .

The communication unit 30 includes a cabinet communication unit 33 connected to the cabinet 1 , a tub communication unit 31 connected to the inside of the tub 2 , and the cabinet communication unit 33 and the tub communication unit 31 . It may include a connecting bellows portion (32).

By disposing the bellows part 32 , even when the tub 2 vibrates, the outside of the cabinet 1 and the inside of the tub 2 can communicate stably.

Air in the tub 2 may be discharged to the outside of the cabinet 1 through the communication part 30 , and air outside the cabinet 1 may be introduced into the tub 2 .

That is, the tub 2 is resonantly vibrated due to excessive rotation of the drum 3 , and the gasket 4 is telescopically provided, and the communication unit 30 is connected to the cabinet 1 or the tub through the bellows unit 32 . It may not be separated from (2). In addition, since it can be moved to its original position through the

tub support parts

131 and 132 , specifically, the first support part 131 and the second support part 132 , stable operation may be possible.

6 is a block diagram of a laundry treatment apparatus according to the present embodiment.

The controller 9 may be provided as a main processor to control the operation of the laundry treatment apparatus. The operation of various control structures to be described later can be controlled through the control unit 9 .

The control unit 9 is provided on the control panel 5 or the like, and the user receives a command to operate the laundry treatment apparatus through the operation unit provided on the control panel 5 to perform the various washing operations and options described above. can be

The control unit 9 may include a module control unit 86 capable of controlling the operation of the induction module 8 . The module control unit 86 may control whether or not the induction module 8 is operated and an operation time thereof. The processor for controlling the induction module 8 and the processor for controlling other components of the laundry treatment apparatus may be provided separately. The processor controlling the induction module 8 and the processor controlling other components may be communicatively connected to each other. Accordingly, it is possible to improve control efficiency and prevent overload of the processor.

In addition, the control unit 9 uses the water level information detected by a sensor such as a water level sensor (not shown) while performing the determined washing cycle and options, the water supply valve (not shown), the drain pump 141, and the driving unit 6) may be provided to control In addition, the control panel 5 may include a display unit, and may provide the user with various courses and current states of the above-described laundry treatment apparatus.

In addition, the control unit 9 may control the cooling water supply valve 70a so that cooling water can be input during drying. When cooling water is added, moisture can be effectively condensed.

In addition, the control unit 9 may control the driving of the motor through the driving unit 6 to generate various driving such as tumbling driving, filtration driving, and spin driving of the drum 3 . . The driving state of the drum 3 may be referred to as the operation of the drum.

The tumbling drive of the drum 3 can be said to be a drive so that the cloth (laundry) inside the drum 3 is lifted and then dropped as the drum rotates at approximately 40 to 46 RPM. That is, the tumbling drive can be said to be a drive in which washing or wetting is performed by mechanical force through the fall of the fabric and friction with the drum. Since the cloth is driven in the drum 3, it can be said that it is a drive that is commonly used.

The filtration driving of the drum 3 can be said to be a drive in which the drum 3 rotates at about 100 RPM by closely contacting the inner peripheral surface of the cloth drum 3 inside the drum 3 to rotate the drum and the cloth integrally. At this time, the laundry cloth is spread on the inner peripheral surface of the drum 3, and the washing water is separated from the cloth.

The spin driving of the drum 3 can be said to be a driving of centrifugal dehydration of washing water from the cloth as the drum 3 rotates at about 800 RPM or more. Spin driving is performed in the final process of washing by a very large centrifugal force, so that all washing can be finished.

That is, due to the operation of the control unit 9 , the laundry treatment apparatus may perform at least one of washing, rinsing, dehydrating, and drying operations.

7 is a view showing a washing procedure according to the present embodiment.

Referring to FIG. 7 , looking at the entire washing sequence applied to the laundry treatment apparatus according to an embodiment of the present disclosure, the laundry treatment apparatus of this embodiment includes a water supply/soak cycle (S10), a washing cycle (S20), and a dehydration cycle ( S30), a rinsing process (S40), and a dehydration process (S50) may be sequentially performed.

The washing cycle is a cycle in which the drum 3 is rotated according to a preset algorithm to remove contamination from the laundry, and a rolling motion and a tumbling motion may be performed.

The dewatering process is a process of draining water and removing water from the fabric while rotating the drum 3 at high speed.

The rinsing cycle is a cycle of removing the detergent adhered to the fabric, and water is supplied, a rolling motion and a tumbling motion may be performed, and then, a dehydration cycle may be performed again.

After the rinsing operation (S40), a dehydration operation (S50) may be performed, and upon completion of the dehydration operation (S50), a drying operation (S60) may be performed.

The drying process (S60) may be a process of removing moisture contained in clothes even when the dehydration process (S50) is performed. The RPM of the drum 3 in the drying cycle (S60) may be set to be greater than the RPM of the drum 3 in the dehydration cycle (S50).

Specifically, the dehydration operation S50 may be performed in a filtration motion in which the drum 3 is rotated to such a degree that the clothes adhere to the inner circumferential surface of the drum 3 . In the drying cycle (S60), the RPM of the drum 3 may be set higher than the filtration motion.

Specific details of the drying process (S60) will be described later.

8 is a view showing the drum RPM in the tub vibrating step according to the present embodiment, FIG. 9 is a view showing the tub vibrating step according to the present embodiment, and FIG. 10 is an internal plan view of the laundry treatment apparatus according to the present embodiment am.

11 is an operation diagram of the laundry treatment apparatus according to the present embodiment.

Hereinafter, it will be described with reference to FIGS. 8 to 11 .

The drying cycle in the laundry treatment apparatus according to the present embodiment may include at least one of an induction operation step ( S610 ) and a tub vibration step ( S620 ).

The induction operation step ( S610 ) may be a step of operating the above-described induction module 8 . The air in the tub 2 may be heated through the induction operation step S610 to increase the water content.

In the induction operation step ( S610 ), the operation of the induction module 8 may be performed by the control unit 9 , specifically, the module control unit 86 .

Specifically, the controller 9 may control the operating state of the induction module 8 according to the operating time of the induction module 8 or the state of clothes in the drum 3 in addition to on/off of the induction module.

For example, the induction module 8 may be turned off or on based on a value measured by at least one of the above-described temperature sensors 133a and 133b. Also, the laundry treatment apparatus may receive a user input through the control panel 5 or the like, and the controller 9 may control the induction module 8 according to the user's input.

The control unit 9 controls the induction module 8 and the driving unit 8 to perform at least one of the operation of the induction module 8 and the operation of vibrating the tub 2 by adjusting the rotation speed of the drum 3 6) can be controlled.

The tub vibrating step ( S620 ) may mean that the tub 2 is controlled to vibrate according to the rotation of the drum 3 . According to the rotation of the drum 3 in the tub vibrating step (S620), the tub 2 may vibrate back and forth in the longitudinal direction of the tub 2 .

Specifically, the tub 2 may resonate at a specific rotational speed (RPM) of the drum 3 . The number of rotations of the drum 3 at which the tub 2 resonates may vary. The size and mass of the drum 3 and the tub 2 may vary according to various factors such as the size or use of the laundry treatment apparatus. Accordingly, the RPM of the drum 3 for the tub 2 to resonate in response to the rotation of the drum 3 may vary depending on the case.

The laundry treatment apparatus according to an aspect of the present disclosure may improve drying performance by generating air discharge and inflow at least once, respectively, in a section in which the RPM of the drum 3 increases and/or decreases.

During the drying cycle (S60) of the clothes, the drum (3) up to a target revolutions per minute (RPM) in which a section in which the tub (2) can resonate in response to the rotation of the drum (3) exists at least once or more. ) may increase the RPM. Accordingly, the tub 2 may resonate at least once or more.

When resonance occurs, the tub 2 may vibrate in the front and rear directions of the cabinet 1 , and accordingly, as the gasket expands and contracts, the air in the cabinet 1 flows through the communication part 30 of the cabinet 1 . Air discharged to the outside and outside the cabinet 1 may be introduced into the cabinet 1 .

Also, as the RPM decreases from the target RPM, resonance may occur again. Even at this time, the air in the tub 2 may be discharged to the outside of the cabinet 1 through the communication part 30 , and the air outside the cabinet 1 may be introduced into the tub 2 .

The tub vibration step (S620) may include an RPM raising step (S621), an RPM maintaining step (S623) and an RPM decreasing step (S624).

The RPM raising step (S621) may be a step in which the RPM rises to a target RPM in which a section in which the tub 2 can be resonated exists at least once in response to the rotation RPM of the drum 3 .

For example, if the tub 2 resonates when the drum 3 rotates at 150RPM and the tub 2 resonates when the drum 3 rotates at 300RPM, the target RPM may be determined as a rotation speed greater than 300RPM.

If the tub 2 resonates at a specific RPM of the drum 3 , the vibration of the tub 2 does not immediately stop when it deviates from the specific RPM. As described above, the first support part 131 and the second support part 132 included in the

tub support parts

131 and 132 attenuate the vibration of the tub 2 , but when it deviates from the specific RPM, the tub 2 is immediately released. Instead of stopping the vibration, it can continue to vibrate as the amplitude decreases. That is, if the RPM is out of the resonance, the amplitude of the vibration is reduced, but the vibration may continue and then gradually stop the vibration. Therefore, when resonance occurs, the discharge and inflow of air through the communication unit 30 may be performed several times, respectively.

It is advantageous that a section in which the tub 2 resonates in response to the rotation of the drum 3 is provided a plurality of times. Accordingly, resonance occurs a plurality of times, and the period in which the tub 2 vibrates back and forth based on the longitudinal direction of the cabinet 1 or the longitudinal direction of the tub 2 can be increased. can be maintained as

Of course, since the number of rotations of the drum 3 is changed over time, the vibration amplitude at which the tub 2 vibrates may vary with time.

The target RPM may be set to be greater than the number of revolutions of the drum 3 in the dehydration process ( S50 ). The target RPM may be higher than the RPM of a filtration motion that rotates the clothes by closely contacting the inner peripheral surface of the drum 3 .

The target RPM may be set to be greater than the number of rotations of the drum 3 in the washing cycle, dehydration cycle, and rinsing cycle so that the tub 2 can resonate with the drum 3 as much as possible.

If the target RPM is too low, only the drying time can be increased without increasing the number of resonances. In addition, if the target RPM is too high, there is a risk that the entire laundry treatment apparatus vibrates significantly. Accordingly, the target RPM may be set within a predetermined range based on the RPM capable of generating resonance. For example, the target RPM may be 380 to 420 RPM. It may be effective if the target RPM is slightly larger than the RPM capable of generating resonance. Preferably, the target RPM may be 400 RPM.

If the rotation is larger than this, the entire clothes processing apparatus including the cabinet 1 may vibrate greatly, which may cause anxiety to the user. Accordingly, the target RPM may be set so that the tub 2 may resonate in response to the rotation of the drum 3 without resonating the entire laundry treatment apparatus.

While the RPM raising step (S621) is being performed, the control unit 9 may determine whether the target RPM has been reached (S622). When the target RPM is reached, under the control of the controller 9, the RPM raising step (S621) is terminated and the RPM maintaining step may be performed. That is, when the RPM of the drum 3 reaches the target RPM, the drum 3 is driven at the target RPM for a predetermined time, and after the predetermined time, the RPM of the drum 3 may decrease. On the other hand, if the target RPM is not reached, the RPM increasing step (S621) may be continuously performed.

In the RPM maintaining step (S623), when the RPM of the drum 3 rises to a preset target RPM through the RPM raising step (S621), the drum 3 does not rise above the target RPM, but the drum 3 rotates at the target RPM It may be a step

The RPM maintaining step (S623) may be performed for less time than the time required for the RPM raising step (S621). The target RPM may not be the RPM at which the tub 2 resonates. Therefore, the RPM maintaining step (S623) does not need to be maintained for a long time.

In addition, if the tub 2 is not at the resonant RPM, the vibration amplitude of the tub 2 in the longitudinal direction of the tub 2 may be gradually reduced, so that the drum 3 does not need to be driven at the target RPM for a long time.

When the RPM maintaining step (S623) is finished, the RPM reducing step (S624) may be performed. The RPM reduction step (S624) may be a step in which the number of rotations of the drum 3 rotated at the target RPM is gradually reduced.

In the RPM reduction step (S624), the RPM of the drum 3 may be reduced from the target RPM. The rotation speed (RPM) of the drum 3 at the end of the RPM reducing step (S624) may be the rotation speed (RPM) of the drum 3 at the start of the RPM increasing step (S621).

That is, in the RPM reducing step (S624), as in the RPM increasing step (S621), a specific RPM in which the tub 2 can resonate in response to the rotation of the drum 3 may be included at least once or more.

Accordingly, even while the RPM of the drum 3 is reduced, the tub 2 may resonate and vibrate back and forth based on the longitudinal direction of the cabinet 1 or the longitudinal direction of the tub 2 .

The RPM increasing step (S621), the RPM maintaining step (S623) and the RPM decreasing step (S624) may be repeated a plurality of times. That is, the tub vibrating step (S620) may be performed a plurality of times. The driving unit 6 may sequentially and repeatedly perform rotation in which the RPM of the drum 3 is increased to the target RPM, maintained, and decreased.

Meanwhile, the control unit 9 may control the RPM increasing speed in the RPM increasing step (S621) to be smaller than the RPM decreasing speed in the RPM decreasing step (S624). That is, the RPM increasing speed in the section S621 in which the RPM of the drum 3 is increased may be smaller than the RPM decreasing speed in the section S624 in which the RPM of the drum 3 is decreased. Since the RPM reduction step (S624) decreases to the RPM at which the drying cycle (S60) starts, if the RPM of the drum decreases faster than the speed at which the RPM rises in the RPM raising step (S621), it will quickly enter the RPM raising step (S621) again. because it can

That is, it is preferable that the speed at which the RPM of the drum decreases in the RPM decreasing step (S624) is greater than the speed at which the RPM of the drum increases in the RPM increasing step (S621).

In the RPM increasing step (S621) and the RPM decreasing step (S624), the tub 2 may vibrate in the front-rear direction with respect to the longitudinal direction of the tub 2 . At this time, the volume of the space (hereinafter, referred to as the tub interior space) formed by the inlet 12 , the gasket 4 , the tub inlet 21 , and the tub 2 of the cabinet 1 may vary.

When the tub 2 is moved toward the front side of the cabinet 1 , the gasket 4 may be shortened in the longitudinal direction of the cabinet 1 . As the volume of the inner space of the tub decreases, the pressure of the air in the inner space of the tub may increase.

Since the external pressure of the cabinet 1 is constant, when the pressure of the air in the internal space of the tub increases, the air in the internal space of the tub may be discharged to the outside of the cabinet 1 through the communication unit 30 .

Conversely, when the tub 2 is moved to the rear side of the cabinet 1 , the gasket 4 may be elongated in the longitudinal direction of the cabinet 1 . That is, as the volume of the inner space of the tub increases, the pressure of the air in the inner space of the tub may decrease.

Since the external pressure of the cabinet 1 is constant, when the pressure of air in the internal space of the tub decreases, the air in the internal space of the tub may be introduced into the interior of the cabinet 1 through the communication unit 30 .

That is, air in the inner space of the tub may be introduced through the communication unit 30 . Since the tub vibration step (S620) can be performed in the drying cycle (S60), the air in the tub interior space absorbs moisture contained in the clothes to dry the clothes, and the humid air is generated by the vibration of the tub (2) in the cabinet ( It can be discharged to the outside of 1). Also, dry air existing outside the cabinet 1 may be introduced into the tub interior space through the communication unit 30 to dry the clothes again.

After the tub vibrating step (S620) is performed a plurality of times, the control unit 9 may determine whether the tub vibrating step is finished (S625). The tub vibration step (S620) may vary according to a user's selection or may be determined by various factors such as the degree of drying of clothes.

When the tub vibrating step (S620) needs to be ended after the user's selection or drying of the clothes is completed, the tub vibrating step may be ended (S626).

Referring to FIG. 11 , a drying cycle ( S60 ) may be performed in the laundry treatment apparatus according to the present embodiment. When the drying process (S60) starts, it can be determined whether there is no remaining water in the tub (2) (S602).

No water remaining in the tub 2 means that unnecessary water does not exist in the tub 2 and does not mean that there should not be any moisture in the tub.

When water unnecessarily remains in the tub 2 , unnecessary energy may be input to remove moisture. Therefore, if the inside of the tub 2 is not at the empty water level, the laundry amount of the object to be dried can be detected after draining (S604) (S603).

When the amount of laundry is sensed, specific processes of the drying cycle ( S60 ), such as a drying time, may be determined accordingly.

According to an embodiment of the present disclosure, in the drying cycle (S60), the induction operation step (S610) and the tub vibration step (S620) may be started together.

When the induction operation step ( S610 ) and the tub vibration step ( S620 ) are started at the same time, at the beginning of drying, dry air from outside air is introduced into the cabinet to remove moisture from the clothes and then discharged to the outside of the cabinet 1 .

In the middle of drying, since the induction operation step (S610) may be sufficiently performed, the temperature of the inner space of the tub may be increased.

Accordingly, if the temperature of the air entering the tub interior space from the outside of the cabinet 1 rises and the same flow rate of air flows in, more moisture can be removed.

According to one aspect of the present disclosure, when the induction module 8 and the driving unit operate together, the control unit 9 operates the cooling water supply valve 70a to inject cooling water into the tub 2 . have.

In addition, while the induction operation step ( S610 ) and the tub vibration step ( S620 ) are performed together, the control unit 9 may open or close the coolant water supply valve 70a and adjust the amount of coolant input.

If the coolant is continuously input, heat may be consumed unnecessarily when the induction operation step S610 is performed. Therefore, the control unit 9 can control whether the cooling water supply valve 70a is opened to effectively perform drying.

When the induction operation is terminated (S612), the tub vibration step (S620) may also be terminated. The induction operation and the tub vibration step S620 do not necessarily have to be stopped at the same time. That is, the induction operation and the tub vibration step ( S620 ) may be stopped at the same time, but need not be controlled to be always stopped at the same time.

Even when the induction operation step (S610) is finished, the drum 3 may still have a hot temperature. When the tub vibrating step S620 is further performed for a predetermined time after the induction operation step S610 is finished (S612), the temperature inside the laundry treatment apparatus can be lowered to quickly promote user safety.

In addition, the tub vibrating step (S620) can improve the drying quality insufficient only in the induction operation step (S610). Therefore, it is preferable that the tub vibration step (S620) be performed even after the induction operation step (S610) is finished.

After the induction operation step ( S610 ) is finished, the control unit 9 may control the cooling water supply valve 70a to be continuously opened. When the induction operation step ( S610 ) is finished, the interior space of the cabinet 1 needs to be cooled. In addition, even if the coolant is continuously added, energy may not be wasted unnecessarily because the induction operation step S610 is terminated.

However, if only the tub vibrating step (S620) is excessively long compared to the induction operation step (S610), the drying time may be excessively increased.

12 is a view showing a drying cycle of a clothes treatment apparatus according to another exemplary embodiment.

Hereinafter, it will be described with reference to FIG. 12 . However, descriptions of the same contents as those described with reference to FIG. 11 will be omitted.

The tub vibration step (S620) may be started after a predetermined time after the induction operation step (S610) is started.

The tub vibration step (S620) is a step of controlling the rotation RPM of the drum (3) to resonate the tub (2) in the front and rear directions of the cabinet (1), and in the tub vibration step (S620), the air in the space inside the tub is moved to the cabinet ( 1) may be discharged to the outside, and air outside the cabinet 1 may be introduced into the space inside the tub.

As described above in FIG. 11 , after the induction operation step ( S610 ) starts, the tub inner space can be sufficiently heated only after a predetermined time has passed. Therefore, it may be advantageous in terms of energy efficiency to perform the tub vibration step (S620) after a predetermined time elapses after the induction operation step (S610) starts.

The timing at which the tub vibration step (S620) starts may be determined according to the temperature of the drum (3) or may be determined according to a predetermined time from the start time of the induction operation step (S610). Also, of course, it may be started in response to a user's arbitrary input.

13 is a view showing a drying cycle of a clothes treatment apparatus according to another embodiment.

Hereinafter, it will be described with reference to FIG. 13 . However, descriptions of the same contents as those described with reference to FIG. 11 will be omitted.

According to the present embodiment, the tub vibrating step (S620) may be performed after the induction operation is finished (S612). As described above, if the tub vibration step (S620) is performed after the induction operation step (S610) is completed, the drying time may be prolonged.

However, while the induction operation step (S610) is performed, the air in the inner space of the tub may be heated and the air may be discharged to the outside of the cabinet 1 . As described above, since the inlet 12 of the cabinet 1 is not completely sealed to the extent that air cannot be introduced, when the air in the inner space of the tub is discharged to the outside of the cabinet 1 , the inlet of the cabinet 1 is Air can be introduced through (12).

Therefore, air may be continuously circulated while the induction operation step ( S610 ) is performed.

According to this embodiment, when the induction operation step (S610) is finished, the tub vibration step (S620) may be performed.

Since the tub vibration step (S620) is not performed while the induction operation step (S610) is being performed, the internal space of the tub is not cooled, so that the drying condition can be quickly reached. Therefore, even if the tub vibration step (S620) is performed after the induction operation step (S610), the drying time may not be excessively long.

Comprehensively described with reference to FIGS. 11 to 13 , the tub vibration step ( S620 ) and the induction operation step ( S610 ) may be controlled independently of each other. The fact that the tub vibration step S620 and the induction operation step S610 can be performed independently of each other does not mean that the tub vibration step S620 and the induction operation step S610 are performed without affecting each other.

The tub vibrating step (S620) may be performed simultaneously with the induction operation step (S610) or after the induction operation step is started. Furthermore, the tub vibrating step (S620) may be performed during the induction operation step (S610) or after the induction operation step (S610) is finished.

The driving unit 6 rotates the drum 3 so that the RPM of the drum 3 rises to the target RPM after the operation of the induction module 8 is finished, or when the induction module 8 does not operate, the drum It can be rotated so that the RPM of (3) rises to the target RPM.

According to an aspect of the present disclosure, a cooling water supply valve 70a for introducing cooling water into the tub 2 is further included when opened, and the cooling water supply valve 70a operates the induction module 8 It may continue to be opened for a certain period of time after this is over.

Although representative embodiments of the present disclosure have been described in detail above, those of ordinary skill in the art to which the present disclosure pertains will understand that various modifications are possible without departing from the scope of the present disclosure with respect to the above-described embodiments. . Therefore, the scope of the present disclosure should not be limited to the described embodiments and should be defined by the claims described below as well as the claims and equivalents.

Claims

a cabinet provided with an inlet into which clothes are put;

a tub provided in the cabinet and having a tub input unit into which the clothes can be put;

a drum rotatably provided in the tub and accommodating the clothes;

a driving unit for rotating the drum;

an induction module for heating the drum;

a gasket connected to the inlet and the tub inlet and provided to be stretchable; and,

Including; a communication part for communicating the inside of the tub and the outside of the cabinet;

During the drying cycle of the clothes, the RPM of the drum is increased to a target revolutions per minute (RPM) in which a section in which the tub can resonate in response to the rotation of the drum exists at least once.
According to claim 1,

When the RPM of the drum reaches the target RPM, the drum is driven at the target RPM for a predetermined time,

After the predetermined time, the RPM of the drum decreases.
3. The method of claim 2,

An RPM increasing speed in a section in which the RPM of the drum is increased is smaller than an RPM decreasing speed in a section in which the RPM of the drum is decreased.
3. The method of claim 2,

The driving unit sequentially and repeatedly performs rotation of the drum to increase, maintain, and decrease the RPM of the drum to the target RPM.
According to claim 1,

and a cooling water supply valve that is opened when the induction module and the driving unit are operated together to introduce cooling water into the tub.
According to claim 1,

The driving unit rotates the drum so that the RPM of the drum rises to the target RPM after the operation of the induction module is finished, or rotates the drum so that the RPM of the drum rises to the target RPM when the induction module does not operate processing unit.
7. The method of claim 6,

and a cooling water supply valve that is opened to introduce cooling water into the tub, wherein the cooling water supply valve continues to be opened for a predetermined time after the operation of the induction module is terminated.
According to claim 1,

The target RPM is higher than an RPM for rotating the clothes by closely contacting the inner circumferential surface of the drum.
According to claim 1,

The target RPM is 360 RPM to 440 RPM clothes processing apparatus.
According to claim 1,

Further comprising; a tub support for damping the vibration of the tub and supporting the tub in the cabinet;

and a hinge shaft provided on the tub support part so that the tub vibrates in a longitudinal direction of the cabinet when the tub resonates in response to rotation of the drum.