Laundry treating apparuts

Abstract

A garment processing device is disclosed. The garment processing device of the present disclosure comprises: a cabinet having an inlet; a door provided in the cabinet for opening and closing the inlet; a drum having an extended cylindrical shape rotatably disposed inside the cabinet; a tubular extension extending from the inlet of the cabinet toward the drum; a first duct provided outside the drum; an induction heater including a coil provided inside the first duct and heating the drum; a first fan supplying outside air into the first duct; and a second duct having an inlet connected to the first duct, extending from the first duct along the radially inner direction of the drum and having an outlet connected to the outer circumference of the extension, wherein the area of ​​the outlet of the second duct may be smaller than the area of ​​the inlet.

Description

Technology Field

[0001] The present disclosure relates to a clothing processing device. Background Technology

[0002] Generally, a clothing processing device may include a washing machine, a dryer, a clothing refresher, etc. The washing machine may be a combined washing machine and dryer that includes a drying function.

[0003] The washing machine above rotates a drum within a tub where water is stored to remove contaminants from the laundry inside the drum. The washing machine may also be equipped with a heating means for heating water or drying laundry.

[0004] The above dryer rotates a drum inside a cabinet and applies heat to the laundry inside the drum to dry the laundry.

[0005] The garment processing device may include a heating means for heating or drying laundry. The garment processing device may be equipped with an electric heater or a heat pump as the heating means.

[0007] Meanwhile, during the drying process, it is common to use a hot air drying method that dries laundry by heating air circulating through a conventional tub and external circulation channels, and a method has been used in which heating wires are placed along the air circulation channels to heat the air.

[0008] To use the aforementioned hot air drying method, a gas heater or electric heater capable of heating the heating wire is required; however, gas heaters present issues regarding safety and exhaust gases, while electric heaters can accumulate foreign substances such as scale and consume excessive energy.

[0009] In addition to the hot air drying method described above, there is also a low-temperature dehumidifying drying method using a heat pump. A heat pump utilizes the cooling cycle of an air conditioner in reverse, and therefore requires the same components as an evaporator, condenser, expansion valve, and compressor.

[0010] Furthermore, another problem with the above hot air drying method and low-temperature dehumidifying drying method is that, since it is an indirect drying method using air, there is a disadvantage that the drying time may be prolonged if the laundry is clumped together or contains a large amount of moisture.

[0011] Meanwhile, research on induction modules (or induction heaters) as a new heating method has recently been conducted.

[0013] In an induction module equipped in a clothing processing device such as a washing machine or a dryer, a coil is wound, and heat can be transferred to a heating target (the drum of the washing machine) by an induced current generated by applying current to the coil.

[0014] Since the induction module can heat the drum, a garment processing device equipped with an induction module can perform laundry drying without having to provide a circulation duct that guides air discharged from the tub back to the tub, which is applied to a garment processing device using a hot air drying method.

[0015] However, in the case of a garment processing device that is not equipped with a circulation duct, during the drying process, lint may accumulate on the back of the cabinet door, the front of the tub, the gasket, etc.

[0016] Public Patent No. 10-2018-0023276 (March 7, 2018) discloses a garment processing device with an induction unit. However, in the structure of the prior patent, a structure for air flow in a garment processing device with an induction module is not disclosed, so as described above, a problem of lint accumulation may occur on the back of the cabinet door, the front of the tub, the gasket, etc. Furthermore, even if the structure is designed to directly induction heat the drum through a magnetic field generated in the induction unit and the heated air is discharged to the outside of the tub, the problem of lint accumulation as described above cannot be prevented because an air flow entering from the front of the tub is not formed.

[0017] In addition, the disclosed patent does not disclose a structure for cooling the induction module. As current flows through the coil of the induction module, the heat generated causes the coil to deteriorate, which can lead to a decrease in the performance of the induction heating module. Prior art literature

[0019] Korean Patent Publication: 10-2018-0023276 (March 7, 2018) The problem to be solved

[0020] The present disclosure aims to solve the aforementioned problems and other problems.

[0021] Another objective may be to provide a clothing processing device such as a dryer equipped with an induction heater, a washing machine, a washing machine combined with a dryer, or a device for refreshing clothing.

[0022] Another objective may be to provide a garment processing device that reduces power consumption during drying.

[0023] Another objective may be to provide a garment processing device that supplies air inside a drum with a simple structure.

[0024] Another objective may be to provide a garment processing device that removes lint accumulated in doors, tubs, gaskets, etc.

[0025] Another purpose may be to provide a garment processing device that prevents the accumulation of lint in doors, tubs, gaskets, etc.

[0026] Another purpose may be to provide a garment processing device that prevents overheating of the coil of an induction heater. means of solving the problem

[0028] A garment processing apparatus according to one aspect of the present disclosure for achieving the above-mentioned purpose comprises a drum, a duct provided outside the drum, and an induction heater that heats the drum and is disposed within the duct.

[0029] The above-described clothing processing device includes a cabinet having an input port. The input port may be provided on the front surface of the cabinet.

[0030] The drum may be rotatably positioned inside the cabinet. The drum may have an opening facing the inlet of the cabinet. The drum may have an extended cylindrical shape. The drum may be made of metal.

[0031] The above clothing processing device may include a tubular extension extending from the input port of the cabinet to the drum side.

[0032] The above clothing processing device may include a first duct provided on the outside of the drum.

[0033] The above-described clothing processing device may include an induction heater for heating the drum. The induction heater may be disposed inside the first duct. The induction heater may include a coil.

[0034] The above-described clothing processing device may include a first fan that supplies outside air into the first duct. Here, outside air may refer to the air between the cabinet and the drum. Additionally, in the case of a clothing processing device including a tub described later, outside air may refer to the air between the cabinet and the tub.

[0035] The above-described clothing processing device may include a second duct connected to a first duct. The second duct may have an inlet connected to the first duct. The second duct may extend from the first duct along the radially inner direction of the drum. The second duct may have an outlet connected to the outer circumference of the extension.

[0036] The area of ​​the outlet of the second duct may be smaller than the area of ​​the inlet.

[0037] Accordingly, the air supplied through the second duct can act as an air curtain in front of the opening of the drum. That is, it can prevent lint separated from the laundry inside the drum from accumulating on the door, the front surface of the tub, and the gasket described later, and can remove the accumulated lint.

[0038] The second duct may have a first width defined in the longitudinal direction of the drum and a second width defined in the radial direction of the drum. The first width of the second duct may be smaller than the second width of the second duct.

[0039] Accordingly, the air supplied through the second duct can flow into the inner side of the extension in a wide drum radial direction and thin drum width direction.

[0040] The first width of the outlet of the second duct may be smaller than the first width of the inlet of the second duct.

[0041] The above clothing processing device may further include a fan housing that accommodates the fan and communicates with the first duct.

[0042] The above fan housing may be located on the opposite side of the second duct with respect to the center of the first duct.

[0043] The first duct is located above the drum, the second duct extends downward from the first duct, and the fan housing may be located above the first duct.

[0044] The second duct may be located on the opposite side of the fan housing with respect to the longitudinal center of the first duct.

[0045] The above clothing processing device may include an exhaust port communicating with the inside of the drum.

[0046] The above clothing processing device may further include a third duct connecting the exhaust port and the outside of the cabinet.

[0048] The above clothing processing device may be a dryer. The above clothing processing device may be a dryer that does not include a tub.

[0049] The above-mentioned clothing processing device may be a washing machine combined with a dryer that performs washing and drying. The above-mentioned clothing processing device may be a washing machine combined with a dryer that includes a tub.

[0050] The tub may be provided inside the cabinet. The tub may provide a space for holding water. The drum may be placed inside the tub. The tub may have an opening facing the inlet of the cabinet.

[0051] The first duct can be mounted on the outer surface of the tub.

[0052] The above extension may include a gasket connecting the inlet of the cabinet and the opening of the tub.

[0053] The outlet of the second duct can be connected to the outer surface of the gasket.

[0054] The above exhaust port can be placed in the above tub.

[0056] The above clothing processing device may further include a fan motor that rotates the fan.

[0057] The above clothing processing device may further include a drum motor (or driving unit) that rotates the drum.

[0058] The above clothing processing device may include a control unit that controls the fan motor, the drum motor, and the induction heater.

[0059] The control unit drives the induction heater and can rotate the fan through the fan motor at a rotational speed smaller than a preset first rotational speed. After rotating the fan at a speed smaller than the first rotational speed, the control unit can rotate the fan through the fan motor at a second rotational speed larger than the first rotational speed. For example, the first rotational speed may be in the range of 60 to 100 rpm. For example, the first rotational speed may be 60 rpm. For example, the second rotational speed may be in the range of 100 to 200 rpm. For example, the second rotational speed may be 200 rpm.

[0060] Based on information received from a sensor placed inside the tub, the control unit can rotate the fan through the fan motor at the second rotational speed. The information received from the sensor may be information related to the moisture content of the laundry inside the drum.

[0061] The above clothing processing device may further include a first temperature sensor positioned at the top of the tub inside the tub, and a second temperature sensor positioned at the bottom of the tub inside the tub.

[0062] The control unit can rotate the fan at the second rotational speed through the fan motor based on the information received from the first temperature sensor and the information received from the second temperature sensor. The control unit can determine the humidity inside the tub based on the information received from the first temperature sensor and the information received from the second temperature sensor. The control unit can determine the moisture content of the laundry inside the drum based on the information received from the first temperature sensor and the information received from the second temperature sensor.

[0063] The control unit can rotate the fan at a second rotational speed through the fan motor based on the moisture content of the laundry. The control unit can rotate the fan at a second rotational speed when the moisture content of the laundry is less than a reference value. For example, the reference value may be in the range of 5 percent to 18 percent. For example, the reference value may be 15 percent.

[0064] The control unit can control the fan to rotate at a speed less than or equal to a preset first rotational speed through the fan motor. After rotating the fan at a speed less than or equal to the first rotational speed, the control unit can control the fan to rotate at a third rotational speed faster than the first rotational speed through the fan motor. The control unit can control the fan to alternately repeat rotation at a speed less than or equal to the first rotational speed and rotation at the third rotational speed.

[0065] For example, the third rotational speed may be in the range of 100 to 200 rpm. The third rotational speed may be smaller than the second rotational speed. For example, the third rotational speed may be 100 rpm.

[0066] The above control unit can rotate the drum such that, when driving the induction heater, the centrifugal force acting on the laundry inside the drum due to the rotation of the drum is greater than gravity.

[0067] Various embodiments for solving the problem of the present disclosure aim to provide a garment processing device equipped with an air circulation structure capable of reducing lint generated in the door or gasket of a garment processing device equipped with an IH module.

[0068] An exemplary embodiment of the present disclosure aims to provide a garment processing device capable of preventing lint from accumulating on a door or gasket at the front of the tub by generating an air circulation flow from the front of the tub to the rear of the tub.

[0069] An exemplary embodiment of the present disclosure aims to provide a garment processing device that can perform cooling of the IH module while simultaneously preventing lint from accumulating on the door or gasket in a garment processing device equipped with an IH module.

[0070] An exemplary embodiment of the present disclosure aims to provide a garment processing device capable of controlling the operation of an IH module and the operation of a fan for air circulation flow to cool the IH module, dry the laundry, and prevent lint from accumulating on the door or gasket.

[0071] An exemplary embodiment of the present disclosure aims to provide a garment processing device capable of minimizing the generation of lint caused by friction of laundry by controlling the rotational speed of the drum so that laundry adheres to the inner surface of the drum during the drying process of a garment processing device equipped with an IH module.

[0072] An exemplary embodiment of the present disclosure aims to provide a clothing processing device comprising: a cabinet having an exterior and an inlet; a tub having an opening that communicates with the inlet and is provided inside the cabinet; a drum made of metal material that is rotatably installed inside the tub to receive clothing; a gasket connecting the inlet of the cabinet and the opening of the tub; a first duct having an exterior on the tub to form a flow path; a second duct communicating with the first duct and the gasket to discharge air to the inner surface of the gasket; an induction module having an interior on the first duct that heats the circumferential surface of the drum through a magnetic field generated by applying an electric current; and a first fan that supplies outside air into the interior of the first duct.

[0073] It may further include a third duct that connects the tub and the cabinet to discharge air inside the tub to the outside of the cabinet, and may further include a second fan that communicates the third duct and the cabinet.

[0074] In addition, air flowing into the interior of the first duct can be supplied from the gap between the tub and the cabinet.

[0075] Additionally, the tub includes a tub opening and a tub body constituting the main body of the tub, and the induction module may be provided on the circumferential surface of the tub body, the first duct extends from the tub body toward the tub opening, and the second duct may communicate with one end of the first duct and the tub opening from the outside of the tub.

[0076] Meanwhile, the apparatus further includes a control unit that controls the rotation of the drum, the operation of the induction module, and the operation of the first fan, wherein the control unit can operate the induction module to heat the drum when the drum rotates. The first fan can be controlled to operate based on the operation of the induction module. The first fan can be controlled to operate simultaneously with the operation of the induction module or after the operation of the induction module.

[0077] Of course, the first fan mentioned above may be controlled independently of the induction module.

[0078] The drum can be controlled to rotate at a first RPM for a predetermined time after the induction module is activated, so that an object contained inside the drum can be attached to the inner surface of the drum, and the drum can be controlled to rotate at a second RPM higher than the first RPM for a predetermined time after the induction module is activated.

[0079] During the drying process of the garment processing device, a section in which the drum rotates at a first RPM such that an object contained inside the drum can be attached to the inner surface of the drum may be performed at least once.

[0080] During the drying process of the above-mentioned garment processing device, a section in which the object contained inside the drum rotates at a second RPM higher than the first RPM at which the object can be attached to the inner surface of the drum may be performed at least once.

[0081] An exemplary embodiment of the present disclosure aims to provide a clothing processing device comprising: a cabinet forming an exterior and having an inlet; a tub having an opening formed inside the cabinet and communicating with the inlet; a metal drum rotatably installed inside the tub to accommodate clothing; a gasket provided between the inlet of the cabinet and the opening of the drum; an induction module provided in the tub with a spacing from the circumferential surface of the drum and heating the circumferential surface of the drum through a magnetic field generated by applying current to a coil; a duct accommodating the induction module and forming a flow path communicating with the opening of the tub; and a fan connected to the duct to supply outside air to the induction module, wherein the outside air introduced into the duct through the fan cools the induction module and is then guided to the front of the gasket and discharged toward the gasket.

[0082] Each of the features of the above-described embodiments may be implemented in combination in other embodiments, provided that such features do not contradict or are not exclusive of other embodiments. Effects of the invention

[0084] According to at least one of the embodiments of the present disclosure, power consumption during drying can be reduced by including an induction heater that heats the drum.

[0085] In addition, by placing an induction heater inside the duct, air can be supplied to the inside of the drum with a simple structure.

[0086] In addition, by positioning the outlet of the duct in front of the drum, lint accumulated on the door, tub, gasket, etc. can be removed, and the accumulation of lint can be prevented.

[0087] In addition, air can be supplied through a duct during the time period when a large amount of lint is generated during drying to prevent the accumulation of lint.

[0088] In addition, by controlling the flow rate supplied through the duct, drying performance can be maintained and accumulated lint removed, thereby preventing lint accumulation.

[0089] In addition, the laundry inside the drum can be controlled to rotate as a unit with the drum without falling off the inner surface of the drum, thereby reducing the generation of lint.

[0090] In addition, by placing the induction heater inside the duct, the induction heater can be prevented from overheating.

[0091] In addition, the outlet area of ​​the second duct connecting the first duct containing the induction heater and the gasket (or extension) is smaller than the inlet area, so that an air curtain can be created.

[0092] In addition, the second duct can generate an air curtain through a wide and fast airflow, as the first width defined in the longitudinal direction of the drum is smaller than the second width defined in the radial direction of the drum.

[0093] In addition, the cooling efficiency of the induction heater can be improved by placing the fan housing on the opposite side of the second duct. Brief explanation of the drawing

[0095] FIG. 1 is a drawing showing the exterior of a clothing processing device according to one embodiment of the present disclosure. Figure 2 is a diagram showing the internal configuration of the clothing processing device of Figure 1. Figure 3 is a drawing showing an induction module, a tub, and a first duct. FIG. 4 is a perspective view illustrating one embodiment of the present disclosure. Fig. 5 is a side cross-sectional view of Fig. 8. FIG. 6 is a block diagram of control configurations that can be applied to a clothing processing device according to one embodiment of the present disclosure. Figure 7 is a drawing showing an induction module. Figure 8 is a drawing showing the shapes of various coils. Figure 9 is a graph showing the rate of temperature rise by position of the drum according to the shape of the base housing on which the coil is mounted. Figure 10 is a graph showing the relationship between the moisture content of the fibers in the laundry and the amount of lint separated from the laundry. FIG. 11 is a graph showing a control method of a clothing processing device according to one embodiment of the present disclosure, and is a graph showing the control of a fan motor that removes accumulated lint. FIG. 12 is a graph showing a control method of a clothing processing device according to one embodiment of the present disclosure, and is a graph showing the control of a fan motor that prevents the accumulation of lint. Specific details for implementing the invention

[0096] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components regardless of drawing symbols are given the same reference number, and redundant descriptions thereof will be omitted.

[0097] The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably solely for the ease of drafting the specification, and do not inherently possess distinct meanings or roles.

[0098] In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of the embodiments disclosed in this specification, such detailed description is omitted. Furthermore, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that they include all modifications, equivalents, and substitutions that fall within the concept and technical scope of this disclosure.

[0099] Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0100] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0101] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0102] Furthermore, for the convenience of explanation, each drawing is described, but it is also within the scope of the present invention that a person skilled in the art combines at least two drawings to implement other embodiments.

[0104] FIG. 1 is a drawing showing the exterior of a clothing processing device according to an embodiment of the present disclosure, and FIG. 2 is a drawing showing the internal configuration of the clothing processing device of FIG. 1.

[0105] To help understand the detailed structure of the garment processing device, the direction facing the door (12) relative to the center of the garment processing device can be defined as the front.

[0106] Additionally, the direction opposite to the direction facing the door (12) may be defined as Rear, and the Right and Left directions may be defined dependently on the front and rear directions defined above.

[0107] The following explanation refers to FIGS. 1 and FIGS. 2.

[0108] A clothing processing device according to one embodiment of the present disclosure may be a washing machine, a dryer, a washing machine combined with a dryer, or a device for refreshing clothing.

[0109] The above clothing processing device may be a dryer that does not include a tub (2). Alternatively, the above clothing processing device may be a washing machine combined with a dryer that includes a tub (2). Hereinafter, a washing machine combined with a dryer is described as a representative example of the clothing processing device of the present disclosure. However, the clothing processing device of the present disclosure is not limited thereto.

[0111] A garment processing device according to one embodiment of the present disclosure includes a drum (3) and an induction heater (4, hereinafter also referred to as an "induction module") for heating the drum (3). The garment processing device may include a cabinet (1) forming an exterior.

[0112] It may include a tub (2) provided inside the cabinet (1). The drum (3) is rotatably provided inside the tub (2) and can accommodate an object (e.g., an object to be washed, an object to be dried, or an object to be refreshed).

[0113] For example, when clothes are washed with washing water, they can be referred to as the washing object; when wet clothes are dried using heat, they can be referred to as the drying object; and when dry clothes are refreshed using hot air, cold air, or steam, they can be referred to as the refreshing object. Therefore, clothes can be washed, dried, or refreshed through the drum (3) of the clothing processing device.

[0114] The cabinet (1) may include an input opening provided at the front of the cabinet (1) through which an object enters and exits, and the cabinet (1) may be provided with a door (12) rotatably connected to the cabinet (1) to open and close the input opening.

[0115] The above door (12) may include a door frame (121) and a viewing window (122) provided in the center of the door frame (121).

[0116] A detergent box (7) may be provided on the upper front side of the above-mentioned clothing processing device. Detergent, fabric softener, etc., can be supplied through the detergent box (7). The detergent box (7) may be provided with a handle so that the user can slide it toward the front of the cabinet (1) to open and close it.

[0117] A control panel (5) may be provided on the upper front side of the above-described clothing processing device. The control panel (5) may be provided for a user interface. Various inputs by the user may be performed, and information based on the input or various information of the clothing processing device may be displayed. That is, an operation part for the user to operate and a display for displaying information to the user may be provided on the control panel (5).

[0118] The tub (2) is provided in a cylindrical shape with a longitudinal axis parallel to the lower surface of the cabinet (1) or maintaining a predetermined angle, forming a space where water can be stored, and a tub opening (21) is provided at the front to communicate with the inlet. The tub (2) may include the tub opening (21) and a tub body (22) constituting the main body of the tub. Accordingly, the tub body (22) is provided in a cylindrical shape, and the tub opening (21) may be provided corresponding to the shape of the tub body (22).

[0119] The tub (2) can be fixed to the lower surface (bottom surface) of the cabinet (1) by a second support member (132), and the second support member (132) is equipped with a support bar (1321) and a damper (1322) so that vibrations generated in the tub (2) by the rotation of the drum (3) can be dampened.

[0120] Additionally, the upper surface of the tub (2) may be connected to a first support member (131) fixed to the upper surface of the cabinet (1). Through the first support member (131), vibrations generated in the tub (2) and transmitted to the cabinet (1) can be dampened.

[0121] That is, the tub (2) can be supported inside the cabinet (1) through the first support member (131) and the second support member (132), and vibrations generated in the tub (2) can also be dampened.

[0122] The drum (3) may include a body extended in a cylindrical shape. The drum (3) may be made of a conductor. The body of the drum (3) may be made of a conductor. The body of the drum (3) may be made of metal. A plurality of through holes (33) may be formed in the drum (3).

[0123] The drum (3) is provided in a cylindrical shape with a longitudinal axis parallel to or maintaining a predetermined angle with respect to the lower surface (bottom surface) of the cabinet (1) to accommodate an object, and a drum opening (31) communicating with the tub opening (21) may be provided at the front. The angle formed by the central axes 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.

[0124] A plurality of through holes (33) penetrating the drum (3) may be formed on the outer surface of the drum (3). Air and washing water may enter and exit between the inside of the drum (3) and the inside of the tub (2) through the through holes (33).

[0125] A lifter (35) for stirring an object when the drum (3) rotates may be provided on the inner surface of the drum (3). The lifter (35) may be provided in multiple numbers on the inner surface of the drum (3), extending along the longitudinal direction of the drum (3).

[0126] The drum (3) can be rotated by a drive unit (6, also called a 'drum motor') provided at the rear of the tub (2).

[0127] The above drive unit (6) may be provided with a stator (61) fixed to the back surface of the tub (2), a rotor (63) that rotates by electromagnetic action with the stator, and a rotating shaft (65) that passes through the back surface of the tub (2) and connects the drum (3) and the rotor (63).

[0128] The stator (61) may be fixed to the rear surface of a bearing housing (66) provided on the back surface of a tub (2), and the rotor (63) may consist of 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 a rotation axis (65).

[0129] A plurality of bearings (68) supporting a rotating shaft (65) may be provided inside the bearing housing (66).

[0130] Additionally, a spider (67) that facilitates the transmission of rotational power of the rotor (63) to the drum (3) may be provided on the back surface of the drum (3), and a rotating shaft (65) for transmitting rotational power of the rotor (63) may be fixed to the spider (67).

[0131] Meanwhile, the clothing processing device according to the present embodiment may include a water supply hose (not shown) that receives water from the outside, and the water supply hose forms a flow path that supplies water to the tub (2).

[0132] Additionally, the clothing processing device according to the present embodiment may include a drainage section (14) for discharging water inside the tub (2) to the outside of the cabinet (1). The drainage section (14) may consist of a drain pipe (142) forming a drainage channel through which water inside the tub (1) moves, and a drainage pump (141) that generates a pressure difference inside the drain pipe (142) to allow drainage through the drain pipe (142).

[0133] More specifically, the drain pipe (142) may include a first drain pipe (1421) connecting the lower surface of the tub (2) and the drain pump (141), and a second drain pipe (1422) having one end connected to the drain pump (141) to form a path for water to move outside the cabinet (1).

[0134] 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 water inside the tub (2) from leaking into the cabinet (1) and to prevent vibrations of the tub (2) from being transmitted to the cabinet (1).

[0135] The gasket (13) may extend from the inlet of the cabinet (1) toward the tub (2) or drum (3). Hereinafter, the gasket (13) is also referred to as the extension part (13).

[0136] A plurality of temperature sensors (133a, 133b) may be provided within the tub (2). The temperature sensors can measure the temperature inside the tub (2). The upper temperature sensor (133a) is located at the top of the tub (2) and can measure the temperature of the air heated through the induction module (4). The lower temperature sensor (133b) is located at the bottom of the tub (2) and can sense the temperature of the washing water or humid air. That is, the plurality of temperature sensors can detect whether the air has been heated to a target temperature by the induction module (4). Based on the temperature measured by the temperature sensors, the operation of the induction module (4) can be controlled by the control unit (8) described later.

[0137] A sensor may be provided within the tub (2) to detect a condition related to the moisture content of the laundry inside the drum (2). For example, the sensor may be a humidity sensor. For example, the sensor may be the temperature sensor (133a, 133b). The control unit (8) may determine the humidity inside the tub (2) based on the temperature detected by the first temperature sensor (133a) and the temperature detected by the second temperature sensor (133b). The control unit (8) may determine the moisture content of the laundry inside the drum based on the temperature detected by the first temperature sensor (133a) and the temperature detected by the second temperature sensor (133b).

[0138] FIG. 3 is a drawing showing an induction module, a tub, and a first duct. The following description will be explained with reference to FIG. 3.

[0139] A garment processing device according to one embodiment of the present disclosure may be equipped with an induction module (4) for induction heating a drum (3). The induction module (4) may heat the drum (3) for heating washing water or drying laundry. The principle of heating the drum (3) using the induction module (4) is as follows.

[0140] The induction module (4) is mounted on the outer surface of the tub (2) and performs the function of heating the circumferential surface of the drum (3) through a magnetic field generated by applying current to a coil (42) in which a wire is wound. The wire may be formed of a core wire and a coating that wraps around the core wire. The core wire may be a single core wire. Of course, multiple core wires may be intertwined to form a single core wire. Accordingly, the thickness or diameter of the wire may be determined by the thickness of the core wire and the coating.

[0141] When an alternating current with changing phase flows through the coil (42) wound with the above wire, the coil (42) forms a radial alternating magnetic field according to Ampere's circuit law.

[0142] The above alternating magnetic field is concentrated toward a drum (metal material) made of a conductor with high permeability. The above magnetic permeability refers to the degree to which a medium is magnetized in response to a given magnetic field. At this time, according to Faraday's law of induction, eddy currents are formed in the drum (3). These eddy currents flow along the drum (3) made of a conductor and are converted into Joule heat by the resistance of the drum (3) itself, thereby directly heating the inner wall of the drum (3).

[0143] 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 the laundry is possible, faster drying is possible compared to a drying device that uses only an indirect heating method, such as a hot air drying method or a low-temperature dehumidification drying method.

[0144] In addition, in the case of a garment processing device with a washing function, the washing water can be heated without being equipped with a separate heating element and a water passage. This is because the washing water continuously comes into contact with the inner and outer walls of the drum (3) heated to a high temperature, so it is not necessary to form a separate water passage and a heating element at the bottom of the tub. Furthermore, according to the method described above, faster heating of the washing water is possible compared to the method of forming a separate water passage and a heating element at the bottom of the tub and using them for heating.

[0145] The above-described induction module (4) may include a base housing (41) on which a coil (42) is wound. The base housing (41) may be coupled to a tub body (22). For coupling the base housing (411) and the tub body (22), the base housing (41) may be provided with a fastening part (411), and the tub (2) may be provided with a fastening part (42) at a position corresponding to the fastening part (411). Furthermore, the first duct (10) may include a fastening part (1101) provided at a position corresponding to the fastening part (42) of the tub (2) and the fastening part (411) of the base housing. Thus, by the fastening structure described above, the base housing (41) may be coupled to the tub (2), and the first duct (10) may be coupled to the tub (2) while accommodating the induction module (4).

[0146] A fan housing (110) may be provided at the upper part of the first duct (10). As described above, the fan housing (110) may be located at the rear side of the tub body (22) in the first duct (10). A first fan (91) is provided inside the fan housing (110). The fan housing (110) may be provided with an intake port (111) for introducing outside air. In order for outside air to be introduced into the first duct (10) through the intake port (111), the fan housing (110) may be provided penetrating the first duct (10).

[0147] The connection structure of the first duct, induction module, and tub described above can be implemented in various forms, and for convenience of explanation, the connection structure is omitted from the description in FIGS. 4 and 5 below.

[0149] FIG. 4 is a perspective view showing an embodiment of the present disclosure, and FIG. 5 is a side cross-sectional view of FIG. 4. The following description will be explained with reference to FIG. 4 and FIG. 5.

[0150] The clothing processing device of the present embodiment provides an air circulation structure capable of cooling the heat generated by the flow of current through the coil (42) and simultaneously supplying it into the interior of the drum.

[0151] The first duct (10) of the present embodiment is provided on the outer upper surface of the tub (2) to accommodate the induction module (4) and form a flow path (112). The flow path (112) may refer to the flow of air moving inside the first duct (10). The induction module (4) is provided within the first duct (10) so that cooling of the induction module (4) can be performed.

[0152] The induction module (4) is provided on the circumferential surface of the tub body (22), and the first duct (10) accommodates the induction module (4) and is provided extending toward the tub opening (21) from the rear of the tub body (22).

[0153] The first fan (91) may be configured to form a flow of air moving within the first duct (10). The first fan (91) may be placed in the first duct (10) or in a flow path connected to the first duct (10). The first duct (10) may supply outside air into the interior of the first duct (10).

[0154] A fan motor (not shown) can rotate the first fan (91). A control unit (8) can control the fan motor to rotate the first fan (91).

[0155] The first fan (91) may be provided on the rear side of the tub body (22) in the first duct (10). Air introduced through the first fan (91) may travel along the longitudinal direction of the first duct (10) and be guided to the front of the tub (2).

[0156] Accordingly, the air introduced by the first fan (91) is introduced from the rear side of the tub body (22) and guided toward the tub opening (21), thereby effectively cooling the induction module (4).

[0157] One side of the first duct (10) is connected to the second duct (20). The second duct (20) is connected to the first duct (10) and the gasket (13) to discharge the air introduced into the first duct (10) to the front of the gasket (13).

[0158] When a drying process is performed by the garment processing device of this embodiment, lint generated from the object to be dried accumulates on the gasket (13) and the tub opening (21).

[0159] In the case of a garment processing device with an induction module (4) applied as in this embodiment, a duct with a structure different from the duct for air circulation applied in conventional garment processing devices must be applied. This is because, since the drum (3) is heated through the induction module (4), a separate heater element such as a heating wire is not required.

[0160] More specifically, a conventional garment processing device is equipped with a separate heater member for heating the washing water on the lower side of the tub, and a garment processing device with a circulating structure is applied to a duct extending from the heater member toward the front of the tub. In addition, a garment processing device with an exhaust structure must be equipped with a heater member for heating the washing water and a heater member for supplying high-temperature air. In the structure of the conventional garment processing device, the high-temperature air is discharged through a duct connected to the front of the tub to prevent lint from accumulating in the gasket.

[0161] In the case of this embodiment, the volume of the drum can be increased by utilizing the space where the aforementioned conventional heater member is provided, as an induction module is applied. Accordingly, the amount of laundry that can be accommodated increases compared to a garment processing device of the same size, and the amount of lint generated during the drying process also increases. Accordingly, the garment processing device of this embodiment can guide high-temperature air toward the front of the gasket to remove lint accumulated on the gasket and the opening side of the tub, and can also prevent lint from moving toward the gasket and the opening side of the tub by forming a kind of air curtain (air cotton) through the flow of air entering from the opening side of the tub into the body of the tub or the interior of the drum.

[0162] The second duct (20) may have an inlet connected to the first duct (10). The second duct (20) may extend from the first duct (10) along the radially inner direction of the drum (3). The second duct (20) may have an outlet connected to the outer surface of the gasket (13, or extension).

[0163] The second duct (20) may have an outlet area smaller than the inlet area.

[0164] The second duct (20) may have a first width defined in the longitudinal direction of the drum (3) and a second width defined in the radial direction of the drum (3). The first width of the second duct (20) may be smaller than the second width of the second duct (20).

[0165] The first width of the outlet of the second duct (20) may be smaller than the first width of the inlet of the second duct (20).

[0166] Accordingly, the air supplied through the second duct can act as an air curtain in front of the opening of the drum. That is, it can prevent lint separated from the laundry inside the drum from accumulating on the door, the front surface of the tub, and the gasket described later, and can remove the accumulated lint.

[0167] Accordingly, the air supplied through the second duct can flow into the inner side of the extension in a wide drum radial direction and thin drum width direction.

[0168] The second duct (20) may be located on the opposite side of the fan housing (110) with respect to the center of the first duct (10). The first duct (10) is located above the drum, and the second duct (20) may extend downward from the first duct (10). The second duct (20) may be located on the opposite side of the fan housing (110) with respect to the longitudinal center of the first duct (10).

[0170] In addition, through the duct structure of this embodiment, as described above, it is possible to prevent lint from accumulating and at the same time cool the induction module (4).

[0171] The airflow guided by the first duct (10) and the second duct (20) described above is explained below.

[0172] The air introduced into the interior of the first duct (10) is guided along the longitudinal direction of the first duct (10) to cool the induction module (4) housed inside the first duct (10), and then is guided to the second duct (20).

[0173] The second duct (20) is connected to the first duct (10) and the gasket (13), and the air guided into the second duct (20) is discharged toward the front of the gasket (13).

[0174] The air discharged through the second duct (20) flows into the internal space of the tub (2) or the internal space of the drum (3) through the tub opening (21) in front of the gasket (13).

[0175] Therefore, the air discharged through the second duct (20) can remove lint accumulated on the gasket (13) and the tub opening (21) side, and prevent the lint from moving to the gasket (13) and the tub opening (21) side.

[0176] Air introduced into the internal space of the tub (2) or the internal space of the drum (3) can be discharged to the outside of the cabinet (1) through the third duct (30).

[0177] The third duct (30) connects the tub (2) and the cabinet (1) to discharge air inside the tub (2) to the outside of the cabinet (1). In addition, a second fan (92) connecting the third duct (30) and the cabinet (1) may be provided to prevent lint from accumulating inside the third duct (30).

[0178] Of course, even if the airflow is not formed through the second fan (92) to the third duct (30) and discharged, the high-temperature air passing through the drum (3) can be guided to the third duct (30) and discharged to the outside of the cabinet (1).

[0179] However, in this case, the problem may arise where relatively heavy lint cannot be discharged to the outside and accumulates inside the third duct (30). Therefore, a stronger airflow can be formed through the second fan (92) to prevent the accumulation of lint inside the third duct (30).

[0180] Meanwhile, air flowing into the interior of the first duct (10) through the first fan (91) can be supplied from the gap between the tub (2) and the cabinet (1).

[0181] FIG. 6 is a block diagram of control configurations that can be applied to a clothing processing device according to an embodiment of the present disclosure. The following description will be explained with reference to FIGS. 4 to 6.

[0182] The configuration for controlling the clothing processing device of the present embodiment may include a control unit (8), an induction module (4), a driving unit (6), and a fan module (9). Of course, not all components of the clothing processing device are controlled by the above configuration. For example, a plurality of temperature sensors (133a, 133b) provided inside the tub also transmit temperature information by the control unit (8), and the control unit (8) can control the induction module (4), the driving unit (6), and the fan module (9) based on the temperature information measured by the temperature sensors. However, for convenience of explanation, some control configurations are omitted.

[0183] The control unit (8) controls the drive unit (6) to rotate the drum (2), and when the drum (2) rotates, it can operate the induction module (4) to heat the drum (2).

[0184] It is preferable that the induction module (4) be operated after the drum (2) has rotated. This is because if the induction module (2) is operated while the drum (2) is stationary, the drum (2) may be heated locally. If the drum (2) is heated locally, it may cause damage to the object contained within the drum or damage to the surrounding electronic devices of the induction module (4). Therefore, to prevent local heating of the drum (2), it is preferable that the induction module (4) be operated after the drum (2) has rotated at a predetermined RPM or higher.

[0185] However, the above induction module (4) is not necessarily required to operate only after the rotation of the drum (2), and the above induction module (4) can operate independently of the rotation of the drum (2) to dry the inside of the drum (2) according to the operating mode of the clothing processing device.

[0187] Referring to Fig. 10, as the drying process proceeds, the fiber moisture content (FMC) of the laundry decreases (i.e., the laundry dries), and the amount of lint generated increases.

[0188] In particular, lint occurs rapidly after the middle of the drying process. For example, the lint occurrence rate increases rapidly around 120 minutes in Fig. 10.

[0189] In addition, lint occurs slowly in the latter part of the drying process. For example, the lint generation rate decreases around 180 minutes in Fig. 10.

[0190] Through this, the correlation between the degree of drying of the laundry and the rate of lint generation can be determined. For example, when the moisture content of the fiber is within the range of 18 percent to 5 percent, the amount of lint generation may increase rapidly. For example, as drying progresses and the moisture content of the fiber decreases, when the moisture content of the fiber is 15 percent, the generation of lint may increase rapidly.

[0191] The control unit (8) can control the rotational speed of the fan motor based on the moisture content of the fiber. The control unit (8) can rotate the fan motor at a high speed when the moisture content of the fiber is 15 percent.

[0193] Referring to FIG. 11, the control unit (8) can perform a drying process by driving the induction heater (4) and rotating the fan (91). The driving and stopping of the induction heater (4) can be repeated. Additionally, the rotation and stopping of the fan (91) can be repeated. The driving of the induction heater (4) and the rotation of the fan (91) can occur in the same time interval.

[0194] Meanwhile, the fan (91) applied to the clothing processing device according to one embodiment of the present disclosure can supply air into the tub (2) when rotating at 60 rpm or less, but the air flow rate is slow and the flow rate is low, so it may be difficult to form an air curtain that prevents lint generation.

[0195] In addition, an air curtain can be formed to prevent lint generation when rotating at 60 rpm or higher.

[0196] In addition, when rotating at 100 rpm or more, an air curtain (or air jet) capable of removing accumulated lint can be formed.

[0197] The control unit (8) can rotate the fan at a rotational speed of less than or equal to a first rotational speed (e.g., 60 rpm) through the fan motor (sections a, b, and c of FIG. 11). After rotating the fan (91) at a speed lower than the first rotational speed, the control unit (8) can rotate the fan (91) at a second rotational speed higher than the first rotational speed (e.g., 200 rpm) (section d of FIG. 11).

[0198] For example, the first rotational speed may be in the range of 60 to 100 rpm. For example, the first rotational speed may be 60 rpm.

[0199] For example, the second rotational speed may be in the range of 100 to 200 rpm. For example, the second rotational speed may be 200 rpm.

[0201] Referring to FIG. 12, the control unit (8) can perform a drying process by driving the induction heater (4) and rotating the fan (91). The driving and stopping of the induction heater (4) can be repeated. Additionally, the rotation and stopping of the fan (91) can be repeated. The driving of the induction heater (4) and the rotation of the fan (91) can occur in the same time interval.

[0202] The control unit (8) can rotate the fan (91) at a speed lower than or equal to a preset first rotational speed (e.g., 60 rpm). After rotating the fan (91) at a speed lower than or equal to the first rotational speed, the control unit can rotate the fan (91) at a third rotational speed (e.g., 100 rpm) faster than the first rotational speed. The control unit (8) can control the fan (91) to alternately rotate at a speed lower than or equal to the first rotational speed and rotate at the third rotational speed.

[0203] For example, the third rotational speed may be in the range of 100 to 200 rpm.

[0204] The third rotational speed may be smaller than the second rotational speed. For example, the third rotational speed may be 100 rpm.

[0205] Meanwhile, the control unit (8) can rotate the drum (3) such that when driving the induction heater (4), the centrifugal force acting on the laundry inside the drum (3) by the rotation of the drum (3) is greater than gravity.

[0206] For example, the control unit (8) can rotate the drum (3) at a speed within the range of 60 rpm to 100 rpm.

[0208] Meanwhile, referring to FIGS. 6 and FIGS. 10 to 12, the first fan (91) can be operated based on the operation of the induction module (4). Preferably, the first fan (91) can be controlled to operate at the same time as the induction module is operated or after the induction module (91) is operated.

[0209] The control unit (8) can control the first fan (91) based on the operation of the induction module (4) to effectively cool the induction module (4) by the first fan (91). Accordingly, the timing of the operation of the first fan (91) can be controlled to be the same as the timing of the operation of the induction module (4) according to the target temperature, and can also be controlled to operate after a predetermined time after the induction module (4) has been operated.

[0210] Of course, the first fan (91) may be controlled independently of the induction module (4). During the drying process by the garment processing device, the induction module (4) may perform intermittent on / off when the drum (3) is sufficiently heated by the induction module (4) and the target temperature is reached. Even when the operation of the induction module (4) is stopped, the drying of the garment processing device may continue. Therefore, the first fan (91) may be operated continuously to prevent the accumulation of lint that may occur during the drying process.

[0211] That is, the first fan (91) and the induction module (4) can be controlled in conjunction with each other or independently by the control unit (8).

[0212] During the drying process of the above-mentioned clothing processing device, the control unit (8) can control the rotation speed of the drum (2) after the induction module (4) is operated. More specifically, the control unit (8) can control the drum (2) to rotate at a first RPM such that, for a predetermined time after the induction module (4) is operated, the object contained inside the drum (2) can be attached to the inner surface of the drum (2).

[0213] The above predetermined time may be set differently depending on the amount of the object or the target temperature set (input) in the clothing processing device.

[0214] Generally, lint is caused by the wear of objects. The wear of the objects can occur during the drying process of a garment processing device, when objects collide with each other inside the drum or fall from the top of the drum into the drum, causing friction with the inner surface of the drum. Therefore, a motion can be added during the drying process to minimize collisions between objects or friction with the inner surface of the drum by ensuring that the objects adhere to the inner surface of the drum.

[0215] However, it is not desirable for the drum (2) to continuously perform the motion of rotating at the first RPM in order to minimize the generation of lint. This is because it is difficult to evenly deliver hot air to the object when the object is attached to the inner surface of the drum (2). Therefore, during the drying process, if the object is continuously attached to the inner surface of the drum (2), the generation of lint can be suppressed, but the drying efficiency of the object may be reduced.

[0216] In addition, in a structure in which an induction module (4) is applied as in the present embodiment and the drum (3) is directly heated by the induction module (4), the drum (3) is maintained at a high temperature during the drying process. Therefore, if the object is continuously attached to the inner surface of the drum (2), it may cause damage to the object.

[0217] Accordingly, as described above, the section in which the drum (3) is controlled to rotate at the first RPM by the control unit (8) is preferably performed for a predetermined time during the drying process, and may be performed intermittently multiple times as needed.

[0218] And as described above, the induction module (4) can be turned on / off intermittently when the target temperature is reached during the drying process. Therefore, it goes without saying that the RPM control of the drum (3) by the control unit (8) can be controlled independently of the control of the induction module (4).

[0219] If the RPM control of the drum (3) is controlled independently of the control of the induction module (4), the control unit (8) may rotate the drum (3) at least once at the first RPM during the drying stroke section regardless of the operation of the induction module (4).

[0220] In addition, during the drying process of the garment processing device, the control unit (8) can control the drum (2) to rotate at a second RPM higher than the first RPM, so that the object contained inside the drum (2) can be attached to the inner surface of the drum (2) for a predetermined time after the induction module (4) is operated.

[0221] The above predetermined time may be set differently depending on the amount of the object or the target temperature set (input) in the clothing processing device.

[0222] The section where the rotation of the drum is controlled at the first RPM is a section where an object is attached to the inner surface of the drum (2) to suppress the generation of lint, and the section where the rotation of the drum is controlled at the second RPM can be described as a section where a strong airflow is formed inside the drum (2) to remove lint. However, the RPM control section of the drum is not necessarily divided into a section that prevents the generation of lint or a section that removes lint, and both the removal of lint and the prevention of lint generation can be achieved by the airflow generated according to the RPM control.

[0223] Accordingly, the control unit (8) can remove lint accumulated on the gasket (13) or tub opening (21) side by controlling the drum (3) to rotate at the second RPM.

[0224] More specifically, when the drum (3) rotates at a second RPM, the airflow entering the interior of the drum (3) from the tub opening (21) side can be generated more strongly. In this case, the lint on the gasket (13) or the tub opening (21) side can be removed by the aforementioned airflow. And in this case as well, it goes without saying that the lint can be prevented from moving toward the gasket (13) or the tub opening (21) side and accumulating by the aforementioned airflow. Also, when the drum (3) rotates at a second RPM, the object is attached to the inner surface of the drum (3), so the generation of lint can be suppressed.

[0225] Meanwhile, the section in which the drum (3) rotates at the second RPM is preferably performed intermittently for a predetermined period of time, and the reason is similar to the section in which the drum (3) rotates at the first RPM described above is performed intermittently for a predetermined period of time.

[0226] Meanwhile, as described above, the RPM control of the drum (3) by the control unit (8) can be performed independently of the operation of the induction module (4), and can be performed intermittently multiple times during the drying process of the clothing processing device.

[0228] FIG. 7 is a drawing showing an induction module. The induction module of FIG. 7 may further include a permanent magnet housing (43) for accommodating a permanent magnet (44) in the induction module (4) described in FIG. 3, and a cover housing (45) coupled to the upper part of the permanent magnet housing (43). The following description will be explained with reference to FIG. 7.

[0229] First, the overall configuration of the induction module (4) is explained.

[0230] The induction module (4) may include a base housing (41) that accommodates a coil (42), a permanent magnet housing (43) that accommodates a permanent magnet (44), and a cover housing (45) that covers the permanent magnet housing (43) to prevent the permanent magnet (44) from being removed.

[0231] The above permanent magnet (44) acts as a blocking member, preventing other components in the surrounding area from being heated in addition to the drum (3), and concentrates the magnetic field generated by the coil (42) toward the drum to increase heating efficiency.

[0232] The base housing (41) may be provided in a roughly rectangular shape. The rectangular shape preferably means a rectangular or oblong shape. A coil (42) is received in the upper part of the base housing (41). A through-hole (415a) may be provided in the central part of the base housing (41).

[0233] A fastening portion (411) is provided at the corner portion of the base housing (41), and it is preferable that the fastening portion (411) protrudes outward from the corner portion. Additionally, a ring (413) to which a hook (436) of a permanent magnet housing (43) is coupled is provided at the edge of the base housing (41). It is preferable that a total of four rings (413) are provided, with two on each side of the long side portion of the base housing (41).

[0234] Meanwhile, it is preferable that the permanent magnet housing (43) be provided with a shape corresponding to the shape of the base housing (41). Accordingly, the permanent magnet housing (43) may be provided with a rectangular or oblong shape.

[0235] The permanent magnet housing (43) is provided with a mounting portion (433) in which a permanent magnet (44) is installed. Additionally, since the permanent magnet housing (43) is preferably composed of a single part, it is preferable to provide a connecting portion (434) that connects multiple mounting portions (433). It is preferable for the connecting portion (434) to be open vertically rather than closed vertically so that heat generated from the coil (42) can be discharged. Therefore, it is preferable for the connecting portion (434) to be provided with a through portion (435) that is open vertically.

[0236] Multiple mounting portions (433) may be provided, and it is preferable that they be provided radially in the direction of the edge near the center of the base housing (41). Since the mounting portion (433) is a part where the permanent magnet (44) is seated, it is preferable that it be a shape corresponding to the permanent magnet (44), that is, a narrow rectangular shape.

[0237] More specifically, the mounting portion (433) may include a long side mounting portion (433a), a short side mounting portion (433b), and a corner mounting portion (433c). Two long side mounting portions (433a) may be provided on each side approximately near the center of the long side of the base housing (41). Two short side mounting portions (433b) may be provided on each side approximately near the center of the short side of the base housing (41). Four corner mounting portions (433c) may be provided from the center of the base housing (41) toward the corners.

[0238] The penetration portion (435) may be provided to open vertically the space between the mounting portion (433) and the adjacent mounting portion (433), for example, in a part where the mounting portion (433) is not provided. That is, it is preferable for the penetration portion (435) to be provided in a shape corresponding to the shape of the space between the mounting portion (433) and the adjacent mounting portion. In addition, since the penetration portion (435) can function to discharge heat generated from the coil (42), it is preferable for it to have as large an area as possible to maintain the strength of the permanent magnet housing (43).

[0239] If high-temperature heat is applied to the permanent magnet (44), the atoms move in a disordered manner and lose their magnetism, which may lead to a problem of weakened durability of the induction module (4).

[0240] Therefore, by cooling the heat generated in the induction module through the cooling channel structure of the duct described above, it is possible to prevent the durability of the induction module from being weakened.

[0241] Meanwhile, a fastening part (431) is provided at the corner portion of the permanent magnet housing (43), and it is preferable that the fastening part (431) protrudes outward from the corner portion.

[0242] A hook (436) extending downward is provided on the edge of the permanent magnet housing (43), and the hook (436) is inserted and coupled to the ring (413) of the base housing (41). Additionally, a groove (432) is provided at a predetermined location inside the permanent magnet housing (43), and the groove (432) is coupled to the hook (433) of the cover housing (45).

[0243] Meanwhile, it is preferable that the shape of the cover housing (45) corresponds approximately to the shape of the permanent magnet housing (43). For example, it is preferable that the cover housing (45) has a rectangular shape. A through-hole (435) is provided in the center of the cover housing (45), and outside air may be introduced or heat generated from the coil may be discharged through the through-hole (435).

[0244] A fastening portion (451) is provided at the corner portion of the cover housing (45), and the hole of the fastening portion (451) is preferably an elongated hole. A hook (433) that engages with the groove (432) of the permanent magnet housing (43) is provided at the bottom of the cover housing (45).

[0245] As shown in FIG. 7, when the induction module (4) is equipped with a permanent magnet housing and a cover housing, the first fan housing (110) described above is formed at a position corresponding to the through parts (455, 435a, 415a) of the base housing, permanent magnet housing, and cover housing, and can cool the heat generated in the coil by supplying outside air.

[0247] Figure 8 is a drawing showing the shape of various coils, and Figure 9 is a graph showing the temperature rise rate by position of the drum according to the shape of the base housing on which the coil is mounted.

[0248] The shape of the coil will be explained below with reference to Fig. 8.

[0249] The coil (42) can be provided in any shape that allows the wire to be wound to form a coil (42), such as a concentric circle, an ellipse, or a track shape on the outer surface of the tub (2), but the degree of heating of the drum (3) may vary depending on the shape of the wound wire.

[0250] This is because if the radius of curvature of the curved portion is formed differently between the inner coil and the outer coil, as in the shape of the coil disclosed in Fig. 8(b), a problem may arise in which the amount of magnetic field transmitted to the center of the drum (3) and the amount of magnetic field transmitted to the front and rear differ significantly.

[0251] In other words, because the area of ​​the coil located near the front and rear of the drum (3) is narrow, the amount of magnetic field transmitted to the front of the circumferential surface of the drum (3) is inevitably relatively small, and because the area of ​​the coil located in the center is wide, the amount of magnetic field transmitted to the center of the circumferential surface of the drum (3) is inevitably relatively large. Therefore, it becomes difficult to heat the drum (3) uniformly.

[0252] Accordingly, as can be seen in FIG. 8(a), the coil (42) may be wound with a wire to have a straight section and a curved section connecting the straight section, and it is preferable that the radius of curvature of the wire forming the curved section be the same for the inner coil and the outer coil.

[0253] It can be seen that there is a clear difference in the area of ​​the coil at the corners between the coil in Fig. 8(a) and the coil in Fig. 8(b).

[0254] To describe the relationship between the straight section and the curved section in more detail, the straight section may include a horizontal straight section comprising a front straight section provided at the front of the outer surface of the tub (2) and a rear straight section provided at the rear of the outer surface of the tub (2), and a vertical straight section formed perpendicularly to the horizontal straight section, and the curved section is formed at the point where the horizontal straight section and the vertical straight section meet.

[0255] That is, the coil (42) of this embodiment, by means of the straight section and the curved section described above, forms a long side from the front to the rear of the tub (2) on the circumferential surface of the tub body (22), forms a short side on the left and right sides of the tub (2), and the corner portion connecting the long side and the short side is provided as a curve, so that it can be provided in a kind of track shape.

[0256] According to the shape of the coil (42) described above, the width of the coil ends, including the coil front end adjacent to the front of the tub (2) and the coil rear end adjacent to the rear of the tub (2), and the coil center part located between the coil ends can be uniformly formed, and as a result, the amount of magnetic field radiated from the coil ends toward the front and rear of the circumferential surface of the drum (3) and the amount of magnetic field radiated from the coil center part toward the center of the circumferential surface of the drum (3) are similar.

[0257] Therefore, the effect of heating the center and front and rear of the circumferential surface of the drum (3) uniformly is achieved.

[0258] As described above, the coil (42) is provided in a track shape having a long side at the front and rear of the tub (2), and the induction module (4) is provided corresponding to the shape of the coil (42), so the first duct (10) extends forward and backward along the longitudinal direction of the tub (2) to accommodate the induction module (4).

[0259] The temperature distribution of the drum according to the coil shape is explained below with reference to Fig. 9.

[0260] Referring to FIG. 9, the heating distribution of the circumferential surface of the drum (3) according to the vertical width of the coil (42) and the coil (42) having different vertical lengths is shown.

[0261] In the graph, the vertical axis indicates each position of the drum, where '1' is the rear of the outer surface of the drum, '5' is the front of the outer surface of the drum (3), and '2 to 5' are the intervals between them. Additionally, the horizontal axis indicates the temperature rise rate of the drum (3).

[0262] The vertical width of the coil (42) and the temperature rise rate of the drum (3) described below are compared relatively with respect to each coil (42) disclosed in FIG. 9. FIG. 9(a) is the case where the drum is heated using the coil with the widest vertical width, FIG. 9(b) is the case where the drum is heated using a coil with a medium vertical width, and FIG. 9(c) is the case where the drum is heated using the coil with the narrowest vertical width.

[0263] Compared to other coils, the coil in Fig. 9(a) shows a uniform temperature rise rate in the front, rear, and center of the drum (3), the coil in Fig. 9(c) shows a significant difference in the temperature rise rate in the front, rear, and center of the drum (3), and the coil in Fig. 9(b) also shows a relatively large difference in the temperature rise rate.

[0264] That is, assuming that the horizontal width of each coil (42) is the same, it can be seen that as the vertical width of the coil (42) increases, the front, rear, and center of the drum (3) are heated relatively uniformly. In other words, it is preferable that the major axis of the elliptical or track-shaped coil be formed in the front-rear direction of the tub (2).

[0265] If this is interpreted as a case where a coil (42) is provided on the outer surface of the tub (2), it can be seen that the closer both ends of the coil (42) are provided to the front of the tub (2), the more uniformly the circumferential surface of the drum (3) provided inside the tub (2) is heated.

[0266] Meanwhile, if the outermost wire of the horizontal straight section is provided to extend to the front and rear of the tub (2), the drum (3) may be heated more uniformly, but in this case, the magnetic field extends excessively to the front and rear, causing other components of the garment processing device, such as the drive unit (6) or the door (12), to be heated, and thus a problem of causing damage to the garment processing device occurs.

[0267] In addition, in the case of a garment processing device (1) in which the rear of the tub (2) is inclined inside the cabinet (1), as the tub (2) vibrates up and down, interference occurs between the front upper corner of the induction module (4) and the upper surface of the cabinet (1), causing damage to the induction module (4) and the cabinet (1). Furthermore, there is a limitation in that if the height of the cabinet (1) is increased to prevent this, a compact garment processing device structure cannot be implemented.

[0268] Accordingly, the outermost wire of the front straight section is spaced apart from the front of the tub (2) by a predetermined distance, and the outermost wire of the rear straight section is spaced apart from the rear of the tub (2) by a predetermined distance, and the predetermined distance is preferably 10 to 20 mm.

[0269] The above-described configuration has the effect of preventing unnecessary heating of components other than the drum (3) or interference between the induction module (4) and the upper inner surface of the cabinet (1), while simultaneously enabling uniform heating of the outer surface of the drum (3).

[0270] Furthermore, it is preferable that the length of the outermost wire of the vertical straight section of the coil (42) be longer than the length of the outermost wire of the horizontal straight section.

[0271] This prevents the magnetic field from being radiated over an excessively wide range in the circumferential direction of the drum (3), thereby preventing other components other than the drum (3) from being heated, and allows for securing a space for the placement of springs or other components that may be provided on the outer surface of the tub (2).

[0272] At this time, the surface formed by the coil (42) where the wire is wound may be provided as a curved surface corresponding to the circumferential surface of the drum (3), and in this case, the magnetic flux density of the magnetic field directed toward the drum (3) can be increased. Furthermore, when the induction module (4) is operated, it is desirable to rotate the drum (3) so that the circumferential surface of the drum (3) is heated uniformly.

[0273] Certain embodiments or other embodiments of the disclosure described above are not mutually exclusive or distinct from each other. Any or all elements of the embodiments of the disclosure described above may be combined with another or combined with each other in configuration or function.

[0274] For example, this means that configuration A described in a specific embodiment and / or the drawings may be combined with configuration B described in another embodiment and / or the drawings. In other words, even if the combination between the configurations is not directly described, it means that the combination is possible except in the case where it is described as impossible.

[0275] The foregoing detailed description should not be interpreted restrictively in all respects but should be considered exemplary. The scope of the invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the invention are included within the scope of the invention (Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and / or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and / or arrangements, alternative uses will also be apparent to those skilled in the art).

Claims

Claim 1 A clothing processing device comprising: a cabinet having an input port; a door provided in the cabinet for opening and closing the input port; a drum having an extended cylindrical shape, rotatably disposed inside the cabinet and having an opening facing the input port of the cabinet; a tubular extension extending from the input port of the cabinet toward the drum; a first duct provided outside the drum; an induction heater including a coil provided inside the first duct and heating the drum; a fan supplying outside air into the first duct; and a second duct having an inlet connected to the first duct, extending from the first duct along the radially inner direction of the drum and having an outlet connected to the outer circumference of the extension, wherein the area of ​​the outlet of the second duct is smaller than the area of ​​the inlet, and the area of ​​the second duct gradually decreases from the inlet to the outlet. Claim 2 A clothing processing device according to claim 1, wherein the second duct has a first width defined in the longitudinal direction of the drum and a second width defined in the radial direction of the drum, and the first width of the second duct is smaller than the second width of the second duct. Claim 3 A clothing processing device according to paragraph 2, wherein the first width of the outlet of the second duct is smaller than the first width of the inlet of the second duct. Claim 4 A garment processing device according to claim 1, further comprising a fan housing that accommodates the fan and communicates with the first duct, wherein the fan housing is located on the opposite side of the second duct with respect to the center of the first duct. Claim 5 A clothing processing device according to claim 4, wherein the first duct is located above the drum, the second duct extends downward from the first duct, and the fan housing is located above the first duct. Claim 6 In paragraph 4, the second duct is a garment processing device located on the opposite side of the fan housing with respect to the longitudinal center of the first duct. Claim 7 A garment processing device according to claim 1, further comprising: an exhaust port communicating with the inside of the drum; and a third duct communicating with the exhaust port and the outside of the cabinet. Claim 8 A garment processing device according to claim 1, further comprising a tub provided inside the cabinet, having the drum disposed inside and having an opening facing the inlet of the cabinet, wherein the first duct is mounted on the outer surface of the tub. Claim 9 In claim 8, the extension part includes a gasket connecting the inlet of the cabinet and the opening of the tub, and the outlet of the second duct is connected to the outer surface of the gasket, forming a garment processing device. Claim 10 A garment processing device according to claim 8, further comprising: an exhaust port disposed in the tub; and a third duct communicating the exhaust port with the outside of the cabinet. Claim 11 A clothing processing device according to claim 1, further comprising: a fan motor for rotating the fan; a drum motor for rotating the drum; and a control unit for controlling the fan motor, the drum motor, and the induction heater. Claim 12 In claim 11, the control unit drives the induction heater and rotates the fan through the fan motor at a speed smaller than a preset first rotational speed, and after rotating the fan at a speed smaller than the first rotational speed, rotates the fan through the fan motor at a second rotational speed larger than the first rotational speed. Claim 13 A garment processing device according to claim 12, further comprising: a tub provided inside the cabinet and having the drum disposed therein; a first temperature sensor disposed above the tub inside the tub; and a second temperature sensor disposed below the tub inside the tub, wherein the control unit rotates the fan at the second rotational speed through the fan motor based on information received from the first temperature sensor and information received from the second temperature sensor. Claim 14 In claim 11, the control unit: rotates the fan at a speed lower than or equal to a preset first rotational speed through the fan motor; after rotating the fan at a speed lower than or equal to the first rotational speed, rotates the fan at a third rotational speed faster than the first rotational speed through the fan motor; and controls the fan to alternately repeat rotation at a speed lower than or equal to the first rotational speed and rotation at the third rotational speed. Claim 15 In claim 14, the control unit rotates the drum such that, when driving the induction heater, the centrifugal force acting on the laundry inside the drum by the rotation of the drum is greater than gravity.

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