WO2021040374A1 - Clothes treatment apparatus - Google Patents

Abstract

According to embodiments of the present invention, provided is a clothes treatment apparatus comprising: a tub; a drum, which accommodates clothes, is made from a metal material, and is rotatably provided in the tub; and an induction module provided on the outer surface of the tub so as to generate an electromagnetic field, thereby heating the circumferential surface of the drum, wherein the induction module includes: a coil around which a wire is wound so that an electric field is generated by the application of an electric current thereto; a base housing mounted on the outer peripheral surface of the tub so as to accommodate the coil; and a blocking part disposed between the base housing and the tub so as to block the electric current when being heated to or above a preset temperature by the amount of heat transmitted from the coil and/or the amount of heat transmitted from the drum. Embodiments of the present invention provide the clothes treatment apparatus, which detects overheating of each of the drum and the coil through one blocking part so as to block the electric current before the clothes treatment apparatus is heated up to a dangerous temperature, thereby ensuring safety.

Description

Clothing treatment device

The present invention relates to a laundry treatment apparatus.

The laundry treatment apparatus includes a washing machine or a dryer. A washing machine is a device that cleans through washing, rinsing, and dehydration to remove contamination from clothes and bedding (hereinafter referred to as'washing') using water, detergent, and mechanical action. It is a device that exposes wet clothing (hereinafter referred to as'washing water') to high temperatures to dry it.

In general, a washing machine needs to increase the temperature of the laundry in order to increase the washing efficiency of the laundry. In addition, the washing machine needs to increase the temperature of the laundry in order to sterilize the laundry.

To this end, the washing machine directly increases the temperature of the laundry by receiving hot water directly from an external water supply source, or indirectly increases the temperature of the laundry by heating the laundry water in which the laundry is immersed by providing a separate heater.

That is, in the conventional washing machine, in order to increase the temperature of the laundry, it is necessary to supply washing water to a level at which all of the laundry is submerged, and to heat the washing water. This caused unnecessary waste of material and energy.

In general, the dryer performs a drying process by heating air with a heater and exposing it to laundry to evaporate moisture contained in the laundry.

At this time, a phenomenon in which the hot air does not evenly contact the laundry frequently occurs. In particular, when the laundry is large or clumped together, the hot air is not evenly supplied to the entire laundry, and thus there is a problem in that drying efficiency is deteriorated.

In addition, in the process of supplying hot air to completely dry the laundry because part of the laundry is not dried, there is a problem that the laundry is damaged by continuously supplying hot air to the dried part.

For this reason, a laundry treatment apparatus in which an induction module for directly heating a drum is provided in a tub has appeared.

The induction module is provided on the outer circumference of the tub to heat the drum. When the drum is directly heated, the drying function can be increased by increasing the temperature of the air passing through the drum without unnecessarily heating the washing water. In addition, when the induction module is provided, the drum is directly heated without heating the washing water, so that time required for heating can be saved. Accordingly, the laundry treatment apparatus including the induction module can increase energy efficiency by preventing unnecessary waste of energy compared to a conventional washing machine, and shorten the washing time, so that the user can wash easily. In addition, since the laundry treatment device including the induction module can exert sufficient washing effect with little energy, the laundry efficiency increases and the user's satisfaction can be improved. The clothing treatment device is a safety accident because the drum is rapidly heated by the induction module. Although the danger is inherent, there is an increasing need for a safety device to secure the reliability of products by preventing such accidents.

According to an embodiment of the present invention, an object is to provide a laundry treatment apparatus capable of reducing the time required for washing.

In addition, it is intended to provide a laundry treatment apparatus capable of ensuring a drying effect while reducing the time required for washing.

In addition, it is intended to provide a laundry treatment apparatus that guarantees safety by measuring an accurate temperature when a drum or coil is overheated while having a small washing time and excellent drying effect.

More specifically, it is intended to provide a laundry treatment device in which a configuration that blocks power supplied to the laundry treatment device can be stably disposed at an appropriate position when the temperature reaches a certain temperature or higher.

In addition, in order to ensure safety, it is intended to provide a clothing treatment device that can reduce manufacturing cost as much as possible.

In addition, for safety, it is intended to provide a clothing treatment device that is easy to repair and replace parts even when the current is cut off. In addition, it is intended to provide a clothing treatment device that guarantees safety even against external shocks.

According to an embodiment of the present invention, there is provided a laundry treatment apparatus including an induction heater module and a safety device for preventing overheating of a drum.

In addition, the safety device provides a laundry treatment device provided in the form of a fuse.

In addition, there is provided a laundry treatment apparatus in which one safety device, a blocking unit, simultaneously contacts the coil base and the tub to prevent overheating of the coil or drum.

In addition, there is provided a laundry treatment apparatus that is provided so as to be compressed and deformed by the blocking portion to the lower portion of the coil and the tub.

In addition, the blocking unit provides a laundry treatment apparatus located in a region adjacent to the coil base and a region adjacent to the center of the drum axial direction, that is, a high temperature generation possible region.

In addition, the blocking unit provides a laundry treatment apparatus provided at a location where the influence of the cooling fan is small in consideration of interference with the surrounding of the tub.

Specifically, it includes a drum that accommodates a tub and clothes, is formed of a metal material, is rotatably provided in the tub, and an induction module that generates an electromagnetic field to heat the circumferential surface of the drum, The induction module includes a coil formed by winding a wire so as to generate a magnetic field by applying a current, a base housing mounted on an outer circumferential surface of the tub to receive the coil, and the base housing and disposed to contact the tub at the same time. When heated to a predetermined temperature or higher by at least one of the amount of heat transmitted from the coil and the amount of heat transmitted from the drum, there is provided a laundry treatment apparatus including a blocking member that blocks current.

In addition, a tube member that surrounds the blocking member and has elasticity, and the base housing includes a base provided to support the coil, a fixed rib extending from the base to form a coil slot portion in which the coil is accommodated, and the base And a support rib extending downward to provide a space for accommodating the blocking part, and the blocking member is provided to be pressed in contact with the base and the tub, and the tub is an induction module coupling part formed on an outer circumferential surface of the tub. Including, wherein the base includes a coupling portion coupled to the outer surface of the tub, and the base is provided in a plate shape having the same curvature as the outer circumferential surface of the tub, providing a laundry treatment apparatus.

In addition, the blocking member provides a laundry treatment apparatus, characterized in that the thermal fuse.

In addition, the base housing further includes a module cover coupled to the base, at least one of the module cover or the support rib includes an outermost support rib extending downward from each end, and the blocking member includes the It provides a laundry treatment apparatus, arranged to be pressed between the outermost support rib and the support rib, the support rib is provided to be biased on both sides of the base in a direction perpendicular to the longitudinal axis of the drum.

In addition, the base housing further includes a module cover coupled to the base, a coil cooling unit for cooling a coil is coupled to the module cover, the coil cooling unit is coupled to the center of the module cover, and the blocking member is the coil It provides a laundry treatment apparatus that is provided to be spaced apart from the cooling unit by a predetermined distance.

In addition, the coil includes a pair of straight portions extending in the longitudinal direction of the tub and a curved portion connecting the straight portions, and the coil includes a front coil portion including the curved portion disposed adjacent to the front of the tub, An intermediate coil portion including the straight portion and a rear coil portion including the curved portion disposed adjacent to the rear of the tub, and the blocking member is disposed below a portion of the lower side of the base housing where the intermediate coil portion is located. And the blocking unit provides a laundry treatment apparatus receiving heat by at least two or more lines of the wire.

In addition, the blocking member provides a laundry treatment apparatus in which one is disposed.

In order to achieve the above object, an embodiment of the present invention is a cabinet, a tub provided inside the cabinet and receiving washing water, a drum rotatably provided inside the tub to accommodate clothes and formed of a metal material, and the drum. And an induction module that is spaced apart from and generates an electromagnetic field to heat the drum, wherein the induction module includes a coil that generates a magnetic field by winding a wire to which a current is applied, and a base mounted on the outer circumference of the tub to receive the coil It is possible to provide a laundry treatment apparatus including a housing and a blocking member provided between the base housing and the tub to selectively block a current applied to the coil.

When the temperature of at least one of the tub, the coil, and the base housing is heated to a predetermined temperature or higher, the blocking member may block a current applied to the coil.

The base housing includes a base providing a space for accommodating the coil, a fixed rib extending from the base in a direction away from the tub to form a coil slot in which the coil is wound, and a fixed rib extending from the base toward the tub to the tub. And a support rib forming a space between the base and the tub, and the blocking member may be located in the space.

The coil slot includes an innermost coil slot provided closest to the center of the base among the coil slots, and an outermost coil slot provided furthest from the center of the base among the coil slots, and the blocking member It may be provided at a position spaced from the bottom of the inner coil slot to the left or right.

The blocking member may be located under the outermost coil slot.

The blocking member may be provided at a position spaced apart from a lower portion of the outermost coil slot in a direction away from the innermost coil slot.

The induction module may further include a tube portion provided to surround the blocking member and contacting the base and the tub, respectively.

The tube portion may be formed of an elastic material and may be forcibly fitted to the base and the support rib to be fixed.

The base housing may be provided on the upper side of the tub.

The base housing further includes a module cover coupled to an upper surface of the base to cover the coil, and at least one of the module cover and the support rib extends toward the tub from at least one of both ends in the left and right directions. It includes an outermost support rib, and the tube portion may be forcibly fitted between the outermost support rib and the support rib to be fixed.

In order to achieve the above object, an embodiment of the present invention is a cabinet, a tub provided inside the cabinet and receiving washing water, a drum rotatably provided inside the tub to accommodate clothes and formed of a metal material, and the drum. And an induction module that is spaced apart from and generates an electromagnetic field to heat the drum, wherein the induction module includes a coil that generates a magnetic field by winding a wire to which a current is applied, and a base mounted on the outer circumference of the tub to receive the coil It includes a housing and a blocking member for selectively blocking the current applied to the coil, wherein the coil connects a pair of straight portions extending in a front-rear direction and the straight portions, and is located in the front or rear of the top of the tub. It includes a curved portion, and the blocking member may provide a laundry treatment apparatus located under the straight portion.

The blocking member may be provided between the base housing and the tub.

The blocking member may be provided at a position spaced from the curved portion in the front-rear direction.

The base housing may be provided on the upper side of the tub.

The base housing includes a base providing a space for accommodating the coil, and a module cover coupled to the base to cover the coil, and a coil cooling unit configured to cool the coil by forming an airflow in the module cover Can be formed.

The coil cooling unit includes a fan housing coupled to the module cover and a fan positioned in the fan housing to form an airflow, and the blocking member may be spaced apart from a rotation center of the fan.

The blocking member may be spaced apart from the fan housing.

The blocking member may be spaced left or right from the fan housing.

The center of the fan housing and the center of the fan may coincide.

The tub may include a module coupling portion formed on an outer circumferential surface of the tub, and the base housing may include a coupling portion fastened to and fixed to the module coupling portion.

The blocking member may be a thermal fuse.

One blocking member may be provided.

The laundry treatment apparatus according to an embodiment of the present invention can reduce the time required for washing by directly heating the drum.

In addition, safety can be ensured while heating the drum quickly.

In addition, in order to prevent overheating of the coil and drum, the manufacturing cost is saved, so that market competitiveness can be secured.

In addition, overheating of the coil and drum can be effectively detected.

In addition, a configuration for detecting overheating of the coil and drum may be stably installed so as not to be removed.

In addition, safety can be guaranteed even when an external shock is applied.

1 is a cross-sectional view of a laundry treatment apparatus according to an embodiment of the present invention

2 is an exploded perspective view of a tub and an induction module of the laundry treatment apparatus according to an embodiment of the present invention

3 is a view schematically illustrating a positional relationship between a tub, a drum, and an induction module without a cabinet in the laundry treatment apparatus according to an embodiment of the present invention.

4 is a view showing several embodiments of a coil of a laundry treatment apparatus according to an embodiment of the present invention

5 is a view showing a base housing of the laundry treatment apparatus according to an embodiment of the present invention

6 is a view showing a tub according to an embodiment of the present invention

7 is a view showing that a blocking unit is provided in the induction module of the laundry treatment apparatus according to an embodiment of the present invention

8 and 9 are cross-sectional views of a base housing of an induction module of a laundry treatment apparatus according to an embodiment of the present invention.

10 is an enlarged view of an induction module and a blocking unit of the laundry treatment apparatus according to an embodiment of the present invention

11 is an exploded perspective view of a tub and an induction module of a laundry treatment apparatus according to another embodiment of the present invention

Hereinafter, a specific embodiment of the present invention will be described with reference to the drawings. The following detailed description is provided to aid in a comprehensive understanding of the methods, devices, and/or systems described herein. However, this is only an example and the present invention is not limited thereto.

In describing the embodiments of the present invention, when it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of users or operators. Therefore, the definition should be made based on the contents throughout the present specification. The terms used in the detailed description are only for describing embodiments of the present invention, and should not be limiting. Unless explicitly used otherwise, expressions in the singular form include the meaning of the plural form. In the present description, expressions such as "comprising" or "feature" are intended to refer to certain features, numbers, steps, actions, elements, some or combination thereof, and one or more It should not be construed to exclude the presence or possibility of other features, numbers, steps, actions, elements, any part or combination thereof.

As shown in FIG. 1, the laundry treatment apparatus according to an embodiment of the present invention includes a cabinet 10, a tub 20, a drum 30 forming an exterior, and an induction provided to heat the drum 30. It may include a module 70.

The tub 20 may be provided inside the cabinet 10 to accommodate the drum. An opening may be provided in front of the tub. The drum 30 is rotatably provided inside the tub and accommodates clothes. Likewise, an opening may be provided in front of the drum. Clothing may be introduced into the drum through the openings of the tub and the drum.

The induction module 70 may be provided to heat the drum by generating an electromagnetic field. The induction module 70 may be provided on the outer peripheral surface of the tub 20. A tub 20 providing a receiving space and having an opening in the front, a drum 30 made of a conductor rotatably provided in the receiving space to receive clothes, and a drum 30 provided on the outer circumferential surface of the tub 20 ) May include an induction module for heating with an electromagnetic field.

The tub 20 and the drum 30 may be formed in a cylindrical shape. Accordingly, the inner and outer circumferential surfaces of the tub 20 and the drum 30 may be formed in a substantially cylindrical shape.

1 shows a laundry treatment apparatus in which the drum 30 is rotated based on a rotation axis parallel to the ground.

The laundry treatment apparatus may further include a driving unit 40 provided to rotate the drum 30 inside the tub 20. The driving unit 40 includes a motor 41, and the motor includes a stator and a rotor. The rotor is connected to the rotation shaft 42, and the rotation shaft 42 is connected to the drum 30 to rotate the drum 30 inside the tub 20. In addition, the driving unit 40 may include a spider 43. The spider 43 is a configuration that connects the drum 30 and the rotation shaft 42 and can be said to be a configuration for uniformly and stably transmitting the rotational force of the rotation shaft 42 to the drum 30.

The spider 43 is coupled to the drum 30 in a form that is at least partially inserted into the rear wall of the drum 30. To this end, the rear wall of the drum 30 is formed in a shape that is recessed into the drum. In addition, the spider 43 may be coupled in a form further inserted into the drum 30 at the rotational center portion of the drum 30. Therefore, laundry is not accommodated at the rear end of the drum 30 due to the spider 43.

A lifter 50 may be provided inside the drum 30. The lifter 50 may be provided in plural along the circumferential direction of the drum. The lifter 50 functions to agitate the laundry. For example, as the drum rotates, the lifter lifts the laundry upwards. The laundry that has moved to the top is separated from the lifter by gravity and falls to the bottom. Washing may be performed by the impact force of such laundry falling. Of course, agitation of laundry can improve drying efficiency.

Laundry can be evenly distributed back and forth within the drum. Accordingly, the lifter can be formed to extend from the rear end of the drum to the front end. The induction module is a device that heats the drum 30.

As shown in FIG. 2, the induction module 70 generates a magnetic field by being supplied with electric current, and a coil 71 capable of generating an eddy current in the drum and a module cover 72 accommodating the coil 71 Includes.

Specifically, the module cover 72 may be provided in a box shape with an open surface. That is, a surface facing the drum may be opened and the opposite surface may be provided in a box shape with a block. Accordingly, the coil 71 is positioned inside the module cover 72 or the module cover 72 covers the upper portion of the coil 71. The module cover 72 functions to protect the coil 71 from the outside. In addition, as described later, the module cover 72 performs a function of cooling the coil 71 by forming an air flow space between the coil 71 and the coil 71.

However, the shape of the module cover 72 is not limited to a box shape with one open surface, and may be provided in a form including a base 741 and a module cover 72 as described later.

In the laundry treatment apparatus, the coil 71 heats the drum 30 to increase the temperature inside the drum 30 as well as the drum 30 itself. Accordingly, the washing water in contact with the drum 30 may be heated through the heating of the drum 30, and clothing in contact with the inner circumferential surface of the drum 30 may be heated. Of course, clothing that does not contact the inner peripheral surface of the drum 30 can also be heated by increasing the temperature inside the drum. Accordingly, in order to improve the washing effect, the ambient temperature inside the washing water, laundry, and drum may be increased, as well as the ambient temperature inside the laundry, the drum and the drum may be increased to dry the laundry.

Hereinafter, the principle of heating the drum 30 by the induction module 70 including the coil 71 will be described as follows.

The coil 71 is formed by winding the wire, and thus the coil 71 has a center. When current is supplied to the wire, the current flows while rotating about the center by the shape of the coil 71. Accordingly, a magnetic field in a vertical direction passing through the center of the coil 71 is generated. At this time, when an alternating current having a different phase difference of current passes through the coil 71, an alternating magnetic field whose direction varies with time is formed. The AC magnetic field generates an induced magnetic field in a direction opposite to the AC magnetic field in an adjacent conductor, and a change in the induced magnetic field generates an induced current in the conductor.

The induced current and the induced magnetic field can be understood as a form of inertia for changes in electric and magnetic fields.

That is, when the drum 30 is provided as a conductor, the drum 30 generates an eddy current or an eddy current which is a kind of induced current due to the induced magnetic field generated in the coil 71.

At this time, the eddy current is dissipated by the resistance of the conductor of the drum 30 and converted into heat. That is, as a result, the drum 30 is heated by heat generated by the resistance, and the temperature inside the drum 30 increases as the drum 30 is heated.

In other words, when the drum 30 is provided with a conductor made of a magnetic material such as iron (Fe), it may be heated by the alternating current of the coil 71 provided in the tub 20.

Recently, stainless steel drums have been widely used to improve strength and hygiene. Since stainless steel has relatively excellent electrical conductivity, it can be easily heated by changes in an electromagnetic field. This means that in order to heat the drum through the induction module 70, it is not necessary to specially manufacture a drum of a new shape or material. Therefore, it is understood that the drum used in the conventional clothes treatment apparatus, that is, the drum in the clothes treatment apparatus in the form of a heat pump or the clothes treatment apparatus using an electric heater, can be used as it is in the clothes treatment apparatus to which the induction module is applied. it means.

The induction module including the coil 71 and the module cover 72 may be provided on the inner circumferential surface of the tub 20. Since the magnetic field strength decreases according to the distance, the induction module may be advantageously provided on the inner circumferential surface of the tub 20 so as to narrow the gap with the drum 30.

However, the tub 20 accommodates washing water, and vibration is generated while the drum 30 rotates. Therefore, it is preferable that the tub 20 is provided on the outer circumferential surface of the tub 20 for safety. This is because the inside of the tub is a very humid environment, so it may not be desirable for the insulation and stability of the coil. Accordingly, the induction module 70 is preferably provided on the outer circumferential surface of the tub 20 as shown in FIGS. 1 and 2.

In general, the tub 20 is provided in a cylindrical shape because the drum 30 rotates and the clothes (hereinafter referred to as “laundry”) are washed or dried. At this time, the coil 71 is It may be provided by winding the entire outer circumferential surface at least once.

However, if the coil 71 is wound along the entire circumference of the tub 20, not only does the coil 71 need too much, but also the washing water leaked from the tub 20 comes into contact, resulting in an accident such as a short circuit. Can occur.

In addition, when the coil 71 is wound along the entire circumference of the tub 20, an induced magnetic field is generated in the opening 22 and the driving unit 40 of the tub 20, and thus the outer circumferential surface of the drum 30 It may not be possible to heat the heat directly. Accordingly, the coil 71 is provided on the outer circumferential surface of the tub 20, and is preferably provided only on one side of the outer circumferential surface of the tub 20.

That is, the coil 71 may not be provided to wind the entire outer circumferential surface of the tub 20, but may be wound at least once in a predetermined area from the front to the rear of the tub 20. This can be said to take into account the efficiency of the heating value of the drum 30 compared to the output of the induction module 70. In addition, in consideration of the space between the tub 20 and the cabinet 10, it can be said that the manufacturing efficiency of the entire laundry treatment apparatus is considered.

In addition, the coil 71 is preferably formed in a single layer. That is, it is preferable that the wire is not wound in a plurality of layers, but in a single layer. When the wire is wound in a plurality of layers, a gap is inevitably generated between the wire and the wire. Accordingly, a distance equal to the gap between the wire of the bottom layer and the wire of the top layer of the bottom layer must be generated. Therefore, the distance between the coil and the drum in the upper layer of the bottom layer is inevitably increased. Of course, even if such a gap can be physically excluded, efficiency is inevitably lowered since the distance between the coil of the upper layer of the bottom layer and the drum increases as the layer of the coil increases. Therefore, it is very desirable that the coil 71 is formed of a single layer. This also means that the coil area in contact with the drum can be increased as much as possible while using the same wire length.

The induction module may be provided on one side of the outer circumferential surface of the tub, and the coil 71 may be provided by winding the induction module at least once or more along a surface adjacent to the tub 20 within the induction module.

Accordingly, the induction module can generate an eddy current in the drum 30 by directly radiating an induction magnetic field to the outer peripheral surface of the drum 30, and as a result, it is possible to directly heat the outer peripheral surface of the drum 30.

Although not shown, the induction module may be supplied with power by being connected to an external power supply through a wire or supplied with power, or by being connected to a control unit that controls the operation of the laundry treatment apparatus to receive power. In addition, a module controller for controlling the output of the induction module may be separately provided. Accordingly, the module controller may control the on/off and output of the induction module under the control of the controller.

That is, if the induction module can supply power to the internal coil 71, it is safe to receive power from anywhere.

When power is supplied to the induction module and an alternating current flows through the coil 71 provided in the induction module, the drum 30 is heated. In this case, since only one surface of the drum 30 is heated if the drum 30 does not rotate, the one surface may be overheated and the remaining surface of the drum 30 may not be heated or the degree of heating may be small. In addition, heat may not be smoothly supplied to the laundry accommodated in the drum 30. Accordingly, when the induction module is operated, the driving unit 40 may rotate to rotate the drum 30.

If all surfaces of the outer circumferential surface of the drum 30 can face the induction module, the speed at which the driving unit 40 rotates the drum 30 may be any speed. As the drum 30 rotates, all surfaces of the drum 30 may be heated, and the laundry inside the drum 30 may be evenly exposed to heat.

Accordingly, the clothing treatment apparatus according to an embodiment of the present invention can evenly heat the outer circumferential surface of the drum 30 even if the induction module is not installed on the upper, lower, and both sides of the outer circumferential surface of the tub 20 and is installed only in one place. .

In the laundry treatment apparatus according to an embodiment of the present invention, by driving the induction module 70, the drum can be heated to 120 degrees Celsius or higher within a very short time. If the induction module 70 is driven in a state in which the drum is stopped or at a very slow rotation speed, a specific part of the drum may be overheated very quickly. This is because sufficient heat transfer from the heated drum to the laundry is not performed.

Therefore, it can be said that the correlation between the rotational speed of the drum and the driving of the induction module 70 is very important. And, rather than driving the induction module and rotating the drum, it can be said that it is more preferable to rotate the drum and drive the induction module.

Through the description of the above-described embodiment, it can be seen that the laundry treatment apparatus according to an embodiment of the present invention can save washing water since the laundry does not need to be completely immersed in the washing water in order to soak the laundry. This is because the part of the drum in contact with the washing water continuously changes as the drum rotates. That is, because the heated portion contacts the washing water to heat the washing water, and then separate from the washing water to be heated again.

In addition, through the description of the above-described embodiments, it can be seen that the clothes processing apparatus according to the embodiment of the present invention can increase the temperature of the clothes and the inner space in which the clothes are accommodated. In other words, it heats the drum in contact with the clothing. Therefore, it is possible to effectively heat the clothing without being immersed in the washing water. For example, washing water can be saved because laundry does not need to be immersed in washing water for sterilization. This is because the laundry can receive heat through the drum rather than through the washing water. In addition, the inside of the drum is changed to a high temperature and high humidity environment through steam or steam generated as the wet clothing is heated, so that the sterilization effect can be more effectively performed. Accordingly, boiled washing in which washing water is immersed in heated washing water and washed can be replaced by a method that uses much less amount of washing water. That is, it is not necessary to heat the washing water having high specific heat, so energy can be saved.

In addition, through the description of the above-described embodiment, it is understood that the laundry treatment apparatus according to an embodiment of the present invention can reduce the amount of washing water supplied to increase the temperature of the laundry, and thus reduce the supply time of the washing water. I can. This is because it is possible to reduce the amount and time of additionally supplying washing water after bagging. Therefore, it is possible to further reduce the washing time. Here, the level of the washing water containing the detergent may be lower than the lowest level of the drum. In this case, by supplying the washing water inside the tub to the inside of the drum through the circulation pump, less washing water can be used more effectively.

Further, through the description of the above-described embodiment, the clothes treatment apparatus according to an embodiment of the present invention can omit the configuration of a heater that is provided under the tub to heat the washing water, thereby simplifying the configuration and increasing the volume of the tub. It can be seen that there is an effect.

In particular, it can be seen that the heater inside the general tub has a limit in increasing the heating surface area. That is, the surface area of the heater is relatively small in contact with air or laundry. However, on the contrary, the surface area of the drum itself or the surface area of the drum circumferential surface itself is very large. Therefore, since the heating area becomes large, an immediate heating effect can be obtained.

In a conventional heating mechanism through a tub heater during washing, the tub heater heats the washing water and the heated washing water increases the drum, laundry, and ambient temperature inside the drum. Therefore, it inevitably takes a lot of time before being heated to a high temperature as a whole.

However, as described above, the circumferential surface of the drum itself has a relatively large area in contact with washing water, laundry, and air inside the drum. Thus, the heated drum directly heats the washing water, laundry, and air inside the drum. Therefore, the induction module as a heating source during washing can be said to be very effective compared to the tub heater. In addition, when the washing water is heated during washing, the driving of the drum is generally stopped. This is to drive the tub heater submerged in the washing water while the water level is stable. Therefore, the washing time can be increased as much as the time required to heat the washing water.

On the other hand, heating of the washing water using the induction module may be performed while the drum is being driven. That is, the driving of the drum for washing and heating of the washing water may be performed at the same time. Therefore, since a separate time for heating the washing water is unnecessary, an increase in washing time can be minimized.

3 is a schematic view of a positional relationship between the tub 20, the drum 30, and the induction module 70, omitting the cabinet 10 in the laundry treatment apparatus according to an embodiment of the present invention.

3 shows that the induction module 70 is disposed on the upper surface of the drum 30 among the outer circumferential surfaces of the tub 20, but this is only for understanding. It does not preclude being placed in place.

As shown in FIG. 3(a), two or more induction modules may be disposed along the front to the rear of the tub 20. That is, by providing a plurality of the induction modules front and rear on the outer circumferential surface of the tub 20, the outer circumferential surface of the drum 30 can be evenly heated.

In addition, energy efficiency may be improved by selectively driving the front induction module and the rear induction module according to the arrangement of the laundry.

For example, when the amount of laundry M is small, the laundry may be skewed to the rear of the drum. This is because the tilting drum is used a lot. Conversely, when the amount of laundry is large, the laundry can be evenly arranged in front and rear of the drum.

When the amount of laundry is small, only the rear induction module is driven, and when the amount of laundry is large, all induction modules are driven, so that the induction module can be driven according to the situation. Of course, it would be possible to drive only one induction module as needed.

As shown in FIG. 3(b), the induction module may be provided in the center of the drum 30. That is, when only one induction module is provided, the induction module may be disposed at a portion corresponding to the center of the drum 30 on the outer circumferential surface of the tub 20. In other words, one induction module may be provided in a form extending from the front and rear centers of the tub 20 to the front and rear sides.

This may heat a gasket provided between the tub 20 and the drum 30 when the induction module is biased to the front, or heat a door for opening and closing the opening of the drum in front of the drum. In addition, when the induction module is biased to the rear, the driving unit 40 and the rotation shaft 42 may be heated. This not only causes waste of energy because other components of the laundry treatment apparatus are unnecessarily heated, and the other components may be overheated and deformed or cause abnormal operation, and thus should be prevented. In particular, a driving unit such as a motor or shaft 42 is provided at the rear of the drum 30, and the rear of the drum is depressed forward for connection to the spider 43. That is, the rear surface of the drum is connected to the spider, and this part has a relatively very small area in contact with the laundry. That is, the area in contact with the laundry is smaller than the circumferential surface of the drum. Therefore, it can be said that heating the rear portion of the drum is very disadvantageous in terms of efficiency. Accordingly, in order to prevent this, the induction module may be provided in the center without being biased toward the front or the rear.

In the same context, a plurality of induction modules may be provided, or if only one is provided, the induction module may be provided at a predetermined distance from the foremost front of the drum 30 and the rearmost of the drum 30.

Because, when the induction module is provided to a portion corresponding to the outer peripheral surface of the drum in the vertical direction from the frontmost to the rear of the drum 30, the door provided between the drum 30 and the tub 20, circulation duct, injection This is because a nozzle or the like can be heated, and when the induction module is provided from the rearmost portion of the drum 30 to a portion corresponding to the vertical direction, the driving part 40 of the drum 30 is heated.

That is, the induction module is provided only within a section spaced apart by a predetermined distance from the frontmost and the rear of the drum 30 to prevent heating by generating eddy currents in other parts of the laundry treatment apparatus.

4 shows embodiments of the planar shape of the coil. That is, it shows a state as viewed from the top of the coil.

4(a) is a view showing that the coil 71 is provided in a circular shape, FIG. 4(b) is a view showing that the coil 71 is provided in an elliptical shape, and FIG. 4(c) is a coil 71 It is a diagram showing what is provided in a track type

Referring to FIGS. 4A to 4C, the coil 71 maintains the circular shape and may be wound at least once or more.

Referring to Fig. 4(a), if the length of the coil in the front and rear direction of the tub 20 is defined as B, and the length of the coil in the width direction to the left and right direction of the tub 20 is defined as A, A and B may be provided to have the same length. The coil 71 may be formed in a plane, and may be formed in a shape having a curved surface left and right in consideration of the cylindrical outer circumferential surface of the tub 20.

Similarly, referring to FIG. 4(b), the coil 71 may be provided in an elliptical shape. That is, it may be provided in an elliptical shape in which a long axis is formed in the front and rear directions of the tub. At this time, the length of B is provided longer than the length of A, so that the front and rear of the drum 30 can be evenly heated by arranging the coil 71 longer in the front and rear of the tub 20.

Referring to FIG. 4C, the coil 71 may be provided in a track shape. In the present specification, “track shape” refers to the length of the tub 20 in the longitudinal direction and the length of the tub 20 in the horizontal direction when setting the reference, the coil 71 is based on the longitudinal axis of the tub 20 A length in the front and rear direction, that is, a first straight portion 7111 extending in the vertical direction, a length in the left and right direction of the tub 20, that is, a second straight portion 7112 extending in a direction perpendicular to the first straight portion 7111, and It may mean that it is provided in a shape including a curved portion 712 in a curved shape connecting the first straight portion 7111 and the second straight portion 7112.

More specifically, the “track shape” may be provided in a rectangular shape in which a vertex portion is rounded. That is, several pairs of the first straight portion 7111 and the second straight portion 7112 are provided, and the curved portion 712 connecting the first straight portion 7111 and the second straight portion 7112 is formed into several pairs. It may be in a form provided.

Considering that the laundry does not come into contact with the drum in the entire drum and that the entire laundry, not only some of the laundry, must be heated evenly, the case of Fig. 4(b) can be said to be more preferable than the case of Fig. 4(a). , It can be seen that the case of FIG. 4(c) is more preferable than the case of FIG. 4(b).

This is because, when provided in the form of a circle or an ellipse, the curvature of the corner portion increases, so that heating of the corresponding portion of the circumferential surface of the drum may not be performed smoothly.

However, when provided in the form of a rectangle, the wire may be bent at the corner (the vertex) to cause a safety accident, so there is a problem that it is difficult to ensure safety, so the coil 71 according to an embodiment of the present invention is a track It is preferable to be provided in a shape.

For example, when the laundry is dried, all 10 laundry may be well dried, but the drying may be insufficient for two laundry skewed toward the front and rear of the drum. This can be said to be a bigger problem than a decrease in drying efficiency. This is because consumers can be very uncomfortable with this drying result. Therefore, it can be said that it is most preferable to heat evenly before and after the drum, and to be able to heat the entire laundry evenly, although the efficiency to some extent is lowered.

In other words, heating efficiency and drying efficiency may vary depending on the shape of the coil. The heating efficiency can be said to be the output versus the input (heating amount of the drum). The heating efficiency can be said to be the rate at which electrical energy applied to the induction module is converted into thermal energy that heats the drum. However, drying efficiency can be said to be an output versus an input until the entire garment is sufficiently dried. In the latter case, it can be said that the time factor is further considered.

Therefore, assuming that drying is completed as a whole and drying is ended, it is more preferable that the drying time can be shortened and the overheating problem can be solved even if the heating efficiency is lowered to some extent.

On the other hand, even with the same coil, it is preferable that the coil is positioned so as to face the center of the drum before and after, as described above. Likewise, the position of the coil and the fluctuation of the heating efficiency are irrelevant, but it can be said that it is the result of considering the drying efficiency.

For this reason, it is preferable that the coil 71 is a single coil and is formed in an elliptical or track shape having a long axis in the front-rear direction of the drum. In addition, it is preferable that the center of the coil 71 faces the center of the drum in the front-rear direction.

Hereinafter, an embodiment in which the induction module 70 has a base housing 74 for fixing the coil 71 will be described in detail with reference to FIG. 5.

5 shows a base housing 74 in which a coil is formed and the coil is fixed. The base housing 74 may be integrally formed through plastic injection. A wire may be inserted into the base housing 74 to form a coil 71. Thus, the distance between the wire and the wire is maintained, and the wire can be fixed. Therefore, the coil as a whole can be fixed without deformation.

The base housing 74 includes a base 741 providing a space for accommodating the coil 71, a module cover 72 coupled from the upper surface of the base 741, and a fixed rib 7241 extending upward from the base 741. ) And a support rib 7242 extending to the lower side of the base 741.

Referring to FIG. 5, the induction module 70 is spaced apart from each other when the coil 71 is wound at least once or more along the front from the rear and from the rear to the front of the tub 20 in the induction module. It may further include a base housing 74 to be able to be. The base housing 74 may be coupled to the module cover 72. Accordingly, the base housing and the module cover 72 may be coupled to each other to form an inner space in which the coil 71 is provided. Accordingly, the base housing 74 and the module cover 72 may be referred to as a module housing. The base housing 74 may be coupled to the module cover 72 so as to be accommodated in the module cover 72.

The base housing 74 may be provided separately from the tub 20 and may be coupled to the outer circumferential surface of the tub. Of course, the base housing 74 may be provided integrally with the tub 20. However, it is not necessary to manage inventory by forming the base housing 74 integrally with the tub 20 for a specific model from the standpoint of a manufacturer providing a variety of models. Therefore, it is preferable that the base housing 74 is formed separately from the tub.

Of course, FIG. 5 shows a structure in which the base housing 74 can be coupled to the outer circumferential surface of the tub 20, but as described above, the base housing 74 is injected integrally with the tub 20 It does not exclude what is provided.

The base housing 74 may include a base 741 provided on an outer peripheral surface of the tub. The base 741 may be formed to correspond to the curvature or shape of the outer circumferential surface of the tub, and may be formed in a plate shape so as to be parallel to the outer circumferential surface of the tub.

In this case, the coil 71 may be provided by being wound around the base 741. That is, the coil may reciprocate from the front to the rear of the tub and may be wound around the base at least once or more. In addition, the base 741 may be referred to as a configuration in which a lower surface or a lower portion of the wire is seated.

The base 741 may include a coupling portion 743 attached to and coupled to an outer surface of the tub. The coupling part 743 may correspond to the module coupling part 26 formed on the outer circumferential surface of the tub as shown in FIG. 2. The two coupling portions 743 and 26 may be coupled to each other through a screw.

In this case, the base 741 may be supported by the coupling portion 743 and may be provided to be spaced apart from the tub by a predetermined distance. This is to prevent the base 741 from being directly exposed to the vibration of the tub.

In addition, since the coupling portion 743 can be coupled through a screw or the like, the separation distance from the tub 20 can be minimized. Accordingly, heat generated by the coil 71 is lost to a minimum and can be transferred to the drum 30 side.

In addition, the base 741 may be provided in the form of a plate having the same curvature as a portion of the circumferential surface of the tub 20 to which the base housing 74 is coupled. This is to uniformly heat the drum 30 by making the distance between the coil 71 and the tub 20 constant.

In this case, it may further include a reinforcing rib for compensating for a gap between the base and the outer circumferential surface of the tub and supporting the strength of the base.

Of course, the base 741 may be in full surface contact with the outer circumferential surface of the tub. In this case, the distance between the coil 71 and the drum 30 may be shortened as much as possible to prevent dispersion of the magnetic field.

The base 741 may be provided with a coil slot 742 through which the coil 71 is wound at least once or more on one surface. In this case, the coil slot 742 may guide the wires of the coil 71 to be wound and provided at a predetermined interval.

Accordingly, it is possible to prevent each wire from being short-circuited with other wires and to ensure the safety of the laundry treatment apparatus 1.

The coil slot 742 may be formed in a track shape. That is, the overall external shape may be in the shape of a track. In addition, the fixed rib may form a plurality of lanes within the track shape. That is, adjacent fixed ribs and fixed ribs form one lane, and a wire may be inserted into the lane. The number of windings of the coil may be determined according to the number of such lanes.

Accordingly, the coil slot 742 may be referred to as a configuration in which the side or side portions of the wire are in close contact. Since both sides or both sides of the wire are in close contact with each other by the coil slot 742, lateral movement of the wire is prevented. Thus, the shape of the coil can be maintained.

That is, the fixed rib 7241 may be formed such that the coil 71 shares a center, but may be provided in at least one of a circle, an ellipse, and a track shape whose size is expanded. In other words, an extension line between the fixing ribs 7241 may be provided in the shape of a circle, an ellipse, or a track.

5 shows that the coil slot 742 is provided in a combination of the fixing ribs 7241, and the fixing ribs 7241 are provided in a track shape having a straight portion and a curved portion. Accordingly, the coil 71 may be provided on the base 741 while being wound starting with the outermost fixing rib 7241 or starting with the innermost fixing rib 7241.

The fixing rib 7241 not only guides the coil 71 to be wound, but also serves to maintain a minimum distance from each other when the coils 71 are wound. In addition, a coil receiving portion is provided between the fixing rib 7241 and another fixing rib 7241 adjacent to the fixing rib 7241. That is, the wire of the coil 71 may be accommodated in the coil receiving portion generated while the fixing ribs 7241 are provided to be spaced apart from each other. That is, it can be seen that the fixing ribs 7241 are spaced apart from each other to form the coil receiving part.

In other words, the coil slot 742 may be formed by a combination of the coil accommodating portion and the fixing rib 7241.

The fixing rib 7241 may be formed to protrude upward from the base 741. In this case, the bottom surface of the receiving portion may be referred to as the top surface of the base 741.

In addition, the fixing rib 7241 may form an upper surface of the base. In this case, the receiving portion may be recessed downward so that the fixing rib 7241 may indirectly protrude upwardly than the receiving portion.

On the other hand, if the coil 71 is subdivided and described, the coil 71 includes a front coil portion 7121 adjacent to the front side of the tub 20, a rear coil portion 7122 adjacent to the rear side of the tub 20, and a front side. It may be divided into an intermediate coil part 7123 formed between the coil part 7121 and the rear coil part 7122.

For example, in FIG. 5, the coil 71 is provided in a track shape, and is located on the upper side of the front of the tub 20 among the sides including the curved portion 712 when viewed based on an arbitrary line parallel to the horizontal direction. Among the sides including the front coil part 7121 and the curved part 712, the part positioned above the rear of the tub 20 is the rear coil part 7122, and the part formed therebetween is the middle coil part 7123. ) Can be distinguished.

Although illustrated in a track shape in FIG. 5, the shape of the coil 71 is not limited thereto, and the shape of the coil 71 may be provided in the shape of a circle or an ellipse. However, since it is most preferable to be provided in a track shape as described above, it will be described below based on this.

6 is a view showing a tub according to an embodiment of the present invention.

6(a) is a front view of the tub 20 as viewed from the front, and FIG. 6(b) is a cross-sectional view as viewed from the side of the tub.

Hereinafter, for a clear understanding of the invention, the x-axis is the axis in the front and rear (vertical) direction passing through the center of the tub 20, and the axis in the left-right (horizontal) direction passing through the center of the tub 20 is the y-axis and the tub 20 The vertical (height) direction is described by setting the axis as the z-axis.

In addition, the safety device may be a blocking unit 80 to be described later.

In the laundry treatment apparatus 1 according to an embodiment of the present invention, since the drum 30 is directly heated through the induction module 74, the time required for heating is less than that of conventional laundry treatment apparatuses. In other words, the fact that drying or heating takes less time may mean that the temperature of the drum 30 or the coil 71 rises quickly.

Therefore, a safety device may be required to ensure the safety of the user. Since the heated part is the drum 30 and the heat dissipating part is the coil 71, each safety device may be separately provided.

However, when the safety device is separately provided as described above, it may be difficult to determine by which safety device the operation is stopped, and replacement may be inconvenient when the operation of the clothing treatment device 1 is stopped.

Therefore, the safety device is preferably provided in a position capable of sensing both the heat transferred from the induction module 74 and the heat transferred from the drum 30.

Referring to FIG. 6(a), a condensate inlet 21 may be formed in the tub 20 of the laundry treatment apparatus 1 according to an embodiment of the present invention. When the induction module 74 heats the drum 30, moisture vapor may be generated from the drying load inside the drum 30. The generated wet vapor is condensed in a portion of the inner peripheral surface of the tub 20 where the temperature is low. Accordingly, condensed water is injected from the rear of the tub 20 to flow condensed water on the inner circumferential surface of the tub 20 to increase the amount of condensed heat, thereby accelerating drying.

Therefore, it is preferable that the safety device is provided above the portion of the tub 20 where the condensate inlet 21 is formed. Specifically, it is not preferable that the safety device is provided in the portion of the tub 20 where the condensate inlet 21 is formed and the side where the condensed water flows. Specifically, it is desirable to operate the safety device according to the temperature of the locally cooled part by introducing condensed water, contrary to the purpose of the safety device, as it may cause another safety accident such as a short circuit through contact with water. Because I can't.

In addition, since the temperature tends to increase as the temperature increases closer to the induction module 74, the safety device is preferably provided adjacent to the induction module 74.

Specifically, referring to FIG. 6(b), the induction module 74 is provided to cover the vicinity of the center of the tub 20 as described above. In addition, the induction module 74 is disposed to be spaced a predetermined distance from the front and rear of the tub 20.

In addition, due to the characteristic of the coil 71 being wound, a temperature rising from the center of the drum 30 may be lower in the front and rear sides of the drum 30. Therefore, it is preferable that a safety device is provided in an area where high temperature can be generated.

Specifically, it is preferable to be a safety device under the intermediate coil unit 7123. This is because it can be advantageous to ensure safety that the safety device is placed in an area where high temperatures can occur.

That is, when comprehensively considered with reference to FIGS. 6(a) and 6(b), the safety device is preferably disposed above the condensate inlet 21 while being disposed adjacent to the high-temperature region of the induction module.

7 is a view showing that a blocking unit is provided in the induction module of the laundry treatment apparatus according to an embodiment of the present invention.

The laundry treatment apparatus 1 according to an embodiment of the present invention may include a blocking unit 80. When at least one of the induction module 74 and the drum 30 is heated to a predetermined temperature or higher, the blocking unit 80 blocks the current flowing through the induction module 74 and stops heating to prevent safety accidents. I can.

The blocking unit 80 may include a blocking member 81 that blocks current when heated to a predetermined temperature or higher, and a tube unit 82 that surrounds the blocking member 81 and has elasticity.

The blocking unit 80 may be provided in plural, one to measure the temperature of the drum 30 and one to measure the temperature of the coil 71, but the more the blocking unit 80 is provided, the higher the material and It may cause inconvenience in repair. Therefore, it is possible to reduce the manufacturing cost when the blocking unit 80 is provided as one, and can be easily replaced without the process of determining where the blocking unit is operated when the blocking unit 80 is operated.

However, when the blocking unit 80 is provided as one, the temperature of the drum 30 and the coil 71 must be measured at the same time, so a position and a condition in which the blocking unit 80 is disposed are very important. In other words, it is important that the blocking unit 80 is disposed so as not to be removed at an appropriate position.

The blocking member 81 may be provided in the form of a thermostat or a thermal fuse. However, preferably, it is preferably provided in the form of a thermal fuse.

The thermostat has the advantage that it can be used reversibly and repeatedly. However, the blocking member 81 is provided in the laundry treatment apparatus 1 to operate after the current is blocked to prevent overheating, and then sufficiently cooled to ensure safety.

Therefore, when the blocking member 81 is provided in the form of a thermostat, when the temperature of the blocking member 81 is lowered below a preset range, the induction module 74 even though the drum 30 or the coil 71 is not sufficiently cooled. ), it may be difficult to secure safety because current flows again.

The tube part 82 may play a role of preventing damage to the blocking member 81 even when the blocking part 80 is compressed through a tolerance design of the space in which the blocking part 80 is disposed. Therefore, it is preferable that the tube portion 82 is formed of a material having elasticity. A detailed description of this will be described later.

In addition, the tube part 82 may serve to assist in measuring the temperature more accurately by increasing the heat conduction area when the blocking part 80 is designed to be pressurized to minimize the amount of heat lost to the air.

In addition, the amount of heat transferred to the blocking member 81 may be adjusted according to the selection of the material and thickness of the tube part 82. Therefore, even at a temperature different from that of the coil 71 or the drum 30, the blocking member 81 may be cut off, thereby blocking the current.

Meanwhile, the blocking member 81 may receive heat from the coil 71 and the drum 30, and a predetermined heat dissipation may be performed to the periphery. That is, the blocking member 81 is not insulated from the surroundings other than the coil 71 and the drum 30. The reason that the coil 71 and the drum 30 are not insulated from surroundings other than the coil 71 and the drum 30 may be for controlling the temperature at which the blocking member 81 is operated.

In addition, since the cut-off unit 80 does not directly measure the temperature of the coil 71 or the drum 30, but is heated by the amount of heat transferred from the coil 71 or the drum 30, the drum 30 and the coil 71 This is because, if there is only the amount of heat transferred from the coil 71 and the drum 30, even though the coil 71 and the drum 30 have not reached the dangerous temperature, the blocking member 81 may be operated as a result.

Accordingly, when the amount of heat transferred is greater than the amount of heat dissipation, and the blocking member 81 is continuously heated and reaches a predetermined temperature or higher, the blocking member 81 is disconnected to block the current supplied to the induction module 74.

Furthermore, the overall heat transfer coefficient in the heat transfer path from the coil 71 to the cut-off part 80 and the overall heat transfer coefficient in the heat transfer path from the drum 30 to the cut-off part 80 may be provided differently. have.

The dangerous temperatures of the coil 71 and the drum 30 may be different from each other. Specifically, for example, the coil may have a dangerous temperature of about 120°C, and the drum 30 may have a dangerous temperature of about 150°C. However, in order to cut off the current supplied to the induction module 74 by sensing the temperature of the coil 71 and the drum 30 having different dangerous temperatures through one blocking member 81, the blocking member ( It is preferable that the overall heat transfer coefficient in the heat transfer path up to 81) and the overall heat transfer coefficient in the heat transfer path from the drum 30 to the blocking member 81 are provided differently.

Meanwhile, the base housing 74 may include a support rib 7242 as described above. The support rib 7242 may be a portion extending below the base 741 and in contact with the tub 20.

A plurality of support ribs 7242 may be provided. Since a plurality of support ribs 7242 are provided, the base housing 74 can be stably supported on the circumferential surface of the tub 20.

At least one of the support ribs 7242 may be provided to be biased to both sides of the base 741 in the left and right directions. In other words, the support ribs 7242 may be provided to be biased on both sides of the base 741 in a direction perpendicular to the longitudinal axis of the drum. The blocking part 80 may be provided between the support ribs 7242 provided to be biased on both sides in the left and right direction.

That is, the blocking unit 80 is disposed between the base 741 and the tub 20 to detect both heat transferred from the coil 71 and the heat transferred from the drum 30.

8 and 9 are cross-sectional views of a base housing of an induction module of a laundry treatment apparatus according to an embodiment of the present invention.

Specifically, the base housing 74 according to an embodiment of the present invention may include a base 741, a fixing rib 7241, and a support rib 7242.

The base 741 may be provided in the shape of a plate having the same curvature as the curvature of the circumferential surface of the tub 20. A space for accommodating the coil 71 formed by winding a wire on the base 741 may be provided.

The fixed rib 7241 may form a coil slot 742 as a portion extending upward from the base 741. When the coil 71 is wound, a plurality of fixing ribs 7241 may also be formed at a predetermined interval in order to be provided so that each wire has a predetermined interval.

The coil slot 742 is an innermost coil slot 742i provided closest to the center C of the base 741 and an outermost coil slot provided farthest from the center C of the base 741 ( 742o).

In this case, the blocking member 81 is preferably provided at a position spaced apart from the bottom of the innermost coil slot 742i to the left or right. This is to prevent the blocking member 81 itself from being overheated by the overheating of the coil 71 while the blocking member 81 simultaneously detects whether the tub 20 and the coil 71 are overheated.

More preferably, the blocking member 81 is preferably located under the outermost coil slot 742o.

Unlike the foregoing, the blocking member 81 may be provided at a position spaced apart from the innermost coil slot 742i in a direction away from the innermost coil slot 742i under the outermost coil slot 742o. (See FIG. 10) In this case, the blocking member 81 may be positioned between the outermost support rib 75 and the base 741 to be described later.

The support rib 7242 may be a portion extending from the base 741 to the opposite side of the fixed rib 7241 and may be a portion that contacts the tub 20 to form a space in which the blocking portion 80 is accommodated. When the base 741 completely contacts the tub 20, heat transfer from the coil 71 to the drum 30 may be effectively performed, but it may be difficult to provide a space in which the blocking portion 80 is accommodated.

The support ribs 7242 may be provided to be biased on both sides of the base 741, in detail, in a direction perpendicular to the longitudinal axis of the drum. This may be because heat can be transferred from the coil 71 and the drum 30 to the blocking unit 80 without significant loss because both sides of the base 741 are more easily compressed as the coupling part 743 is screwed. .

However, the base 741 and the tub 20 are not necessarily coupled only through screw coupling. Depending on the degree of coupling, it is sufficient if the base 741 can be in close contact with the tub 20 as closely as possible, and it is sufficient if the base 741 is coupled so that the blocking portion 80 can be sufficiently pressed.

In addition, the blocking part 80 is provided so that the support ribs 7242 providing a space in which the blocking part 80 is accommodated are biased to both sides of the base 741 in order to be provided away from the center of the base 741. It can be provided.

The support rib 7242 may include an outermost support rib 75 extending downward from an end of one of the left and right sides of the base 741. However, the present invention is not limited thereto, and the outermost support rib 75 may be formed to extend from an end of at least one of the left and right sides of the module cover 72 in the lower direction of the base 741 as described later. That is, the outermost support rib 75 may be formed to extend downward from the base 741 or may be formed to extend downward from the module cover 72.

The blocking part 80 may be accommodated between the support rib 7242 and the outermost support rib 75. Specifically, the support rib 7242 and the outermost support rib 75 are spaced equal to the diameter of the tube portion 82 or the length in the left and right direction, or the tube portion 82 is separated from the support rib 7242 A gap may be formed between the outermost support ribs 75 so as to be forcibly fitted. Accordingly, the tube portion 82 may be disposed to be pressed between the support rib 7242 and the outermost support rib 75.

Accordingly, the blocking unit 80 can be fixed without shaking in the left and right directions even when a force is applied to the laundry treatment apparatus 1. In addition, since the blocking portion 80 receives force from both sides of the support rib 7242 and the outermost support rib 75, it may be formed so as not to deviate upward due to shear stress even when a force is applied in the upward direction.

Referring to FIG. 10, the blocking unit 80 may be provided not only to be crimped in the left and right direction, but also to be crimped up and down.

Specifically, the blocking unit 80 may be disposed on the lower side of the base 741 and the upper surface of the tub 20 as described above. The base 741 and the tub 20 may be spaced apart by a length equal to the height of the blocking part 80 or may be spaced apart by a length in which the blocking part 80 can be forcibly fitted. This is the same as that the support rib 7242 and the outermost support rib 75 may be spaced apart by the same length as the left and right length of the blocking part 80 or the blocking part 80 may be spaced apart by a length that can be forcibly fitted. do.

That is, it is possible to determine how the blocking unit 80 is fitted according to the separation distance between the base 741 and the tub 20, so that the blocking unit 80 can be pressed between the tub 20 and the base 741 It is important to be equipped. This may be to prevent separation of the heat transfer efficiency and the blocking unit 80 as described above. Therefore, when the blocking unit 80 is installed, it is not removed, and overheating of the drum and coil can be stably detected at the original position.

That is, the blocking unit 80 may be provided to be pressed between the base 741 and the tub 20. The separation distance may be adjusted by screw coupling of the coupling part 743 in order to be provided so that the blocking part 80 is pressed between the base 741 and the tub 20. This is because the blocking part 80 is provided to be biased to one of the left and right sides of the base 741, and both sides of the base 741 are rigidly fixed to the upper surface of the tub 20 due to screw coupling of the coupling part 743 This is because the blocking unit 80 can be coupled to the lower surface of the base 741 and the upper surface of the tub 20 so as to be in close contact with each other according to the rotation of the screw.

In other words, the blocking portion 80 may be provided to be pressed up and down between the base 741 and the tub, and may be provided to be pressed left and right between the support rib 7242 and the outermost support rib 75. As a result, the blocking unit 80 can effectively receive heat transferred from the coil 71 and the drum, and it is possible to ensure reliability of the laundry treatment apparatus since it does not leave its original position even in the event of an external shock.

Meanwhile, the fixing rib 7241 may be formed to extend upwardly from the base 741 and extend from the end to the left and right. In this case, the height of the portion of the fixing rib 7241 extending left and right may be the same as or close to the diameter of the wire forming the coil 71 to be a height capable of pressing the wire. As a result, the heat of the coil 71 is effectively transferred to the base 741 and reliability of the blocking unit 80 can be ensured.

In addition, the blocking unit 80 may receive heat by at least two or more wires. This may be for compensating because the heat transfer path from the drum 30 and the heat transfer path from the coil 71 are different.

Specifically, looking at the heat transfer path from the drum 30, the heat radiated from the drum 30 is convective through the space between the drum 30 and the tub 20, and is conducted through the tub 20 to be blocked ( 80). In contrast, the coil 71 conducts heat through the base 741 and is transferred to the blocking unit 80. However, it is not limited to the above-described paths, and it is sufficient if the heat transfer path from the drum 30 and the heat transfer path from the coil 71 are different.

That is, the blocking unit 80 receives heat from the upper surface of the tub 20 by the area of the blocking unit 80, and receives heat from the lower surface of the base 741 by the area of the blocking unit 80. In this case, the area of the blocking unit 80 does not have an area corresponding to one line of wires, but may be formed to receive heat generated from several wires.

11 is an exploded perspective view of a tub and an induction module of a laundry treatment apparatus according to another embodiment of the present invention.

The induction module 74 included in the laundry treatment apparatus 1 according to an embodiment of the present invention may include a module cover 72, and the module cover 72 may have a coil cooling unit 76 formed therein. have. The coil cooling unit 76 may be formed in the center of the module cover 72.

The coil cooling unit 76 may include a fan housing 763 coupled to the module cover 72 and a fan 761 provided on the fan housing 763 to form an airflow.

Air may be introduced into the module cover 72 through the coil cooling unit, that is, into the induction module. Since a space is formed between the module cover 72 and the base 741 inside the induction module, a flow space of air is formed. In addition, a through portion (not shown) may be formed in the base 741. Accordingly, air may cool the coil 71 in the inner space and be discharged to the outside of the induction module 74 through the through portion of the base 741.

The blocking unit 80 is a structure that prevents overheating of the coil 71 and the drum 30 and prevents overheating of the base 741, and is preferably provided as far from the coil cooling unit 76.

Specifically, the blocking unit 80 senses the temperature of the drum 30 and the coil 71, and is cut off when the blocking member 81 is heated to a preset temperature or higher, and transmits power supplied to the induction module 74. This is because the blocking member 81 may not operate by the fan 761 disposed in the coil cooling unit 76. That is, if the blocking unit 80 is positioned adjacent to a portion that has been locally cooled by the cooling fan, the blocking member 81 may not detect this even when the other portion of the coil 71 is heated to a dangerous temperature may occur. .

Therefore, the blocking unit 80 is preferably provided to be spaced apart from the coil cooling unit 76 as far as possible. Accordingly, the blocking unit 80 is preferably positioned in the intermediate coil unit 7123, which is a high-temperature region, while sufficiently spaced apart from the coil cooling unit 76 in order to minimize the influence of the coil cooling unit 76.

More specifically, the blocking unit 80 is preferably provided at a position spaced apart from the rotation center of the fan 761.

The blocking part 80 is preferably provided at a position spaced apart from the fan housing 763. In this case, the blocking unit 80 is preferably provided at a position spaced from the fan housing 763 to the left or right. In this case, it is preferable that the center of the fan housing 763 and the center of the fan 761 coincide.

Although the exemplary embodiments of the present invention have been described in detail above, those of ordinary skill in the art to which the present invention pertains will understand that various modifications can be made to the above-described embodiments without departing from the scope of the present invention. . Therefore, the scope of the present invention is limited to the described embodiments and should not be determined, and should not be determined by the claims to be described later, but also by those equivalents to the claims.

Claims (10)

1. cabinet;

   A tub provided inside the cabinet and accommodating washing water;

   A drum rotatably provided inside the tub to accommodate clothes and formed of a metal material; And

   Induction module spaced apart from the drum and generating an electromagnetic field to heat the drum; Including,

   The induction module,

   A coil to which a current is applied is wound to generate a magnetic field;

   A base housing mounted on an outer circumferential surface of the tub to accommodate the coil; And

   And a blocking member provided between the base housing and the tub to selectively block a current applied to the coil.
2. The method of claim 1,

   The blocking member,

   When the temperature of at least one of the tub, the coil, and the base housing is heated to a predetermined temperature or higher, a current applied to the coil is cut off.
3. The method of claim 2,

   The base housing,

   A base providing a space in which the coil is accommodated;

   A fixed rib extending from the base in a direction away from the tub to form a coil slot through which the coil is wound; And

   Includes; a support rib extending from the base toward the tub to form a space between the base and the tub,

   The blocking member is a laundry treatment apparatus, characterized in that located in the spaced apart.
4. The method of claim 3,

   The coil slot,

   An innermost coil slot provided closest to the center of the base among the coil slots; And

   Includes; an outermost coil slot provided farthest from the center of the base among the coil slots,

   The blocking member is a laundry treatment apparatus, characterized in that provided at a position spaced apart from the bottom of the innermost coil slot to the left or right.
5. The method of claim 4,

   The blocking member is a laundry treatment apparatus, characterized in that located below the outermost coil slot.
6. The method of claim 4,

   And the blocking member is provided at a position spaced apart from the innermost coil slot in a direction away from the innermost coil slot at a lower portion of the outermost coil slot.
7. The method of claim 3,

   The induction module,

   And a tube portion provided to surround the blocking member and contacting the base and the tub, respectively.
8. The method of claim 7,

   And the tube portion is formed of an elastic material and is forcibly fitted to and fixed to the base and the support rib.
9. The method of claim 8,

   The base housing is a laundry treatment apparatus, characterized in that provided on the upper side of the tub.
10. The method of claim 9,

    The base housing further includes a module cover coupled to an upper surface of the base and provided to cover the coil,

    At least one of the module cover and the support rib includes an outermost support rib extending toward the tub from at least one end of both ends in the left and right direction,

    And the tube portion is forcibly fitted between the outermost support rib and the support rib to be fixed.

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