Laundry treating apparatus

Abstract

A laundry treating apparatus includes: a cabinet having a rear plate disposed on a rear side thereof; a drum which is rotatably provided inside the cabinet and accommodates laundry, and a drum back surface facing the rear plate is disposed on the rear side of the drum; and a driving part located behind the rear plate and providing rotational force to the drum, the rear plate including a driving mounting part and an air flow part coupled to the driving mounting part, the air flow part surrounding the driving mounting part and providing air to the drum, the drum rear surface including a rear surface center part facing the driving mounting part and an air passage part passing through the rear surface center part, the air passage part passing through the rear surface center part. The air passing part surrounds the central part of the back surface, the air provided by the air flowing part flows into the air passing part, the air flowing part comprises a flowing space, the air flows in the flowing space, the flowing space is opened towards the front surface of the air passing part, and the air passing part protrudes backwards from the back surface of the roller and faces the opened front surface of the air flowing part; the rear end of the air passage section is positioned rearward of the front end of the drive section.

Description

[0001] This application is a divisional application with application number 202210177719.7, application date February 25, 2022, and invention name “Clothing processing device”. Technical Field

[0002] The present invention relates to a clothes processing device, and in particular to a clothes processing device comprising a driving part connected to a drum containing clothes and capable of rotating the drum. Background Art

[0003] A clothes processing device is a device that performs various processing processes on clothes, such as washing or drying clothes, and includes a washing machine, a dryer, a clothes care device (Styler), and the like.

[0004] The washing machine is configured to perform a washing process capable of separating and removing impurities on the clothes by supplying water and detergent to the clothes. The dryer can be divided into an exhaust type dryer or a circulation type dryer according to whether the air is circulated, etc., and both the exhaust type dryer and the circulation dryer are configured to perform a drying process for removing moisture present in the clothes by heating the air and supplying it to the clothes.

[0005] The clothes treating apparatus may include a driving part for rotating the drum, and the driving part may be connected to the drum in various ways and provide a rotational force.

[0006] As a related document, Korean Patent Publication No. 10-2019-0121656 discloses a clothing processing device in which a driving part is arranged at a lower side inside a housing and connected by a drum belt.

[0007] The clothes treating device corresponds to a dryer capable of drying clothes, and includes a circulation flow path receiving air from a drum and supplying the air to the drum again, and a heat pump connected to the circulation flow path and heating the air.

[0008] In the laundry processing apparatus, since the driving shaft of the driving unit and the rotating shaft of the drum are not located on the same line, an additional transmission medium such as a belt is used to provide the power of the driving unit to the drum.

[0009] When the driving part is located at the bottom of the box and a belt is used to provide rotational force to the drum, since there is a large difference between the diameter of the driving shaft and the diameter of the drum, an additional transmission for increasing torque, such as a reducer, can be omitted.

[0010] However, if a belt is used to provide a rotational force from a driving part to a drum, slippage is likely to occur between the belt and the driving part or between the belt and the drum due to the rotation speed of the driving shaft or the inertia of the drum.

[0011] Therefore, in the clothes processing device, slippage and the like may cause disadvantages in efficiency, and restrictions may also occur in changing the rotation speed or rotation direction of the drive shaft, which is not conducive to applying an efficient drum rotation strategy.

[0012] Furthermore, in the clothing processing device, since the air circulation unit and the heat pump are arranged at the same time as the driving unit in the lower part of the box, for example, on a base portion arranged on the bottom surface of the box, there will be restrictions on the layout of the structural elements and on the space that can be allocated to each structural element, which is disadvantageous.

[0013] On the other hand, unlike the laundry processing device, the drive unit may not be disposed on the lower side of the housing, but may be disposed on the rear side of the drum and connected to the drum. In this case, structural elements such as a belt for connecting the drive unit and the drum may be omitted.

[0014] As related documents, Japanese Patent Publication No. JPS55-081914A, Japanese Patent Publication No. JPS55-115455A, Japanese Patent Publication No. JPS57-063724A, and Japanese Patent Publication No. JPS57-124674A disclose clothes processing devices in which a driving unit is fixed to the back side of a housing.

[0015] The laundry processing apparatus may be configured to rotate the drum by arranging a driving unit behind the drum, so that a driving shaft of the driving unit and a rotating shaft of the drum may be located on the same line, thereby eliminating the need for using a belt or the like and enabling the driving unit to directly rotate the drum.

[0016] Thereby, the slipping phenomenon occurring in the belt or the like is solved, and since the rotation of the drive shaft can be directly transmitted to the drum, it is helpful to construct a rotation strategy for the drum.

[0017] However, the clothes treating device is equivalent to a dryer, and thus, unlike a washing machine, does not have an outer tub in which a drum is built and contains water, so the driving part is coupled to the rear panel of the housing behind the drum.

[0018] Furthermore, in the laundry processing apparatus, air is supplied to the inside of the drum to dry the laundry, and in order to smoothly supply air to the inside of the rotating drum, an air flow unit for supplying air to the inside of the drum may be provided at the rear side of the drum.

[0019] Therefore, in the clothes processing apparatus, an air flow portion is provided together with the driving portion at the rear side of the drum, and thus it is an important issue to design the back side of the housing to include the driving portion and the air flow portion.

[0020] As a related document, Korean Patent Publication No. 10-2020-0065932 discloses a clothing processing device in which a driving unit is coupled to the back side of a housing located behind a drum, and an air flow unit is provided that faces the back side of the drum and flows air toward the back side of the drum.

[0021] In the laundry processing device, the driving part is coupled to the back side of the housing at a position facing the center from the back side of the drum, and a flow part for flowing air along the periphery of the driving part is provided.

[0022] The flow portion is formed by combining a duct with a space for air flow on the back of a box, and a plurality of holes are formed on the back of the box toward the front of the duct, so that the air in the duct is supplied to the back of the drum.

[0023] However, in the clothes processing device, since an additional duct member protruding rearward from the back of the housing is combined to form the flow portion, additional fixing for combining the duct member is required, and air leakage between the duct member and the back of the housing may occur, which is disadvantageous.

[0024] In addition, since a plurality of holes will be formed on the back of the box in front of the duct member, an additional punching process of the box is required. Furthermore, since the area outside the holes will hinder the forward flow of air, it is not conducive to supplying air to the back of the drum.

[0025] On the other hand, since the driving unit coupled to the back of the box is located behind the back of the box, unnecessary space must be ensured behind the box, or it is located in front of the back of the box, which reduces the internal space of the box and reduces the capacity of the drum, which is disadvantageous.

[0026] Therefore, for a clothing processing device that can dry clothes, designing an efficient structure that can dispose the driving part on the rear side of the drum, realizing an efficient structure of the air flow part that can effectively supply air to the back of the drum, and thus effectively using not only the internal space of the box but also the layout space for configuring the clothing processing device will become an important topic in this technical field. Summary of the invention

[0027] An embodiment of the present invention provides a clothes treating apparatus in which a driving part and a drum are directly connected, so that the power of the driving part can be effectively transmitted and an effective rotation method of the drum can be used.

[0028] In addition, an embodiment of the present invention provides a clothes treating apparatus including a rear plate capable of coupling a driving part while effectively forming an air flow part for supplying air to a drum.

[0029] In addition, the embodiments of the present invention provide a clothes treating apparatus that can effectively increase the capacity of a drum inside a housing and can effectively use the internal space of the housing.

[0030] In addition, the embodiments of the present invention provide a clothes treating apparatus having an efficient structure capable of effectively supplying air to the inside of a drum by directly shielding the air flow portion of the rear plate through the back side of the drum.

[0031] In addition, the embodiments of the present invention provide a clothes treating apparatus in which a driving part is combined with a rear plate, which has excellent space utilization and can effectively use the layout space and can effectively increase the capacity of the drum.

[0032] A clothes treating device according to an embodiment of the present invention comprises a housing, and a rear plate constituting a part of the housing is arranged at the rear side of the housing. The rear plate may form the back side of the clothes treating device.

[0033] A driving part may be combined at the center of the rear plate. The driving part may be combined with the rear plate at the rear of the rear plate, penetrate the rear plate and be connected to the back side of the drum.

[0034] The rear plate may include an air flow portion surrounding a drive mounting portion to which the drive portion is coupled. The air flow portion may be formed as a part of the rear plate by stamping the rear plate or the like.

[0035] The air flow portion may be formed by bending or curving a portion of the rear plate, whereby the front surface may be opened forward and a flow space for air flow may be formed inside.

[0036] The drum can be provided with a drum back side facing the rear plate on the rear side, and the drum back side can include: a back central part facing the drive mounting part, and the drive shaft of the drive part is connected to the back central part; and an air passing part surrounding the back central part and facing the air flow part.

[0037] The air passing portion may include a plurality of holes to allow air flowing out from the air flowing portion toward the air passing portion to pass therethrough, and the air passing through the air passing portion may be supplied to the inside of the drum and dry the laundry.

[0038] The back of the drum may be formed in a shape in which the air passage portion protrudes backward from the back of the drum. That is, the air passage portion protrudes from the back of the drum toward the open front of the air flow portion to directly shield the open front of the air flow portion and receive air. The space inside the drum of the drum in which the air passage portion protrudes backward is ensured according to the increased size of the air passage portion, thereby effectively increasing the capacity for accommodating clothes.

[0039] The laundry processing device of one embodiment of the present invention comprises a box, a drum and a driving unit. A rear plate is arranged at the rear side of the box, the drum is rotatably arranged inside the box, the laundry is accommodated inside the drum, and a drum back side facing the rear plate is arranged at the rear side of the drum.

[0040] The driving part is arranged behind the rear plate, penetrates the rear plate and is connected with the drum.

[0041] The rear plate includes: a drive mounting portion for combining with the drive portion; and an air flow portion surrounding the drive mounting portion to provide air to the drum, and the back side of the drum includes: a back side central portion facing the drive mounting portion and connected to the drive portion; and an air passing portion surrounding the back side central portion, and the air provided from the air flow portion passes through the air passing portion and is supplied to the interior of the drum.

[0042] A flow space for air flow is formed inside the air flow portion, the front side of the air flow portion is open so that the flow space is exposed to the front, and the air passing portion protrudes backward from the back side of the drum to cover the open front side of the air flow portion.

[0043] The air passage portion may protrude rearwardly from the rear center portion to shield the front surface of the air flow portion.

[0044] The drum may include a drum peripheral surface connected to the drum back side in front of the drum back side, a peripheral connection portion connected to the drum peripheral surface is provided at the edge of the drum back side, and the air passing portion protrudes further rearward than the peripheral connection portion to shield the front side of the air flow portion.

[0045] The air passage portion may be bent or curved from the peripheral connection portion and protrude rearward, and a space may be formed inside the air passage portion.

[0046] The air flow portion may protrude rearward from the rear plate to form the flow space therein.

[0047] The air flow portion may be formed by bending or curving the rear plate, and may protrude rearward to form the flow space open to the front inside.

[0048] The air flow portion may include a flow recessed surface shielding a rear of the flow space, and the air passing portion may directly face the flow recessed surface through the open front side of the air flow portion.

[0049] The air passing portion may include a vent portion including a plurality of vent holes for passing air and protruding from the air passing portion toward the flow space. A plurality of vent portions may be provided and spaced apart from each other along a circumferential direction of the air passing portion.

[0050] The air passage portion may further include a rear reinforcing rib disposed between the plurality of ventilation portions and protruding forwardly of the ventilation portions.

[0051] An embodiment of the present invention may further include: a rear sealing member located between the air passing portion and the air flowing portion, surrounding the air flowing portion, and preventing the air provided from the air flowing portion from leaking to the outside of the air passing portion.

[0052] The rear seal may include an inner seal extending along an inner peripheral edge of the air flowing portion and an outer seal extending along an outer peripheral edge of the air flowing portion.

[0053] The air passage portion may be configured such that at least a portion thereof is inserted into the rear plate and surrounds the driver mounting portion.

[0054] The rear plate may include a rear protrusion having a space formed inside and protruding rearward, the air flow portion being configured to protrude rearward from the rear protrusion, the air passing portion protruding rearward from the back side of the drum and inserted into the rear protrusion, and shielding the front side of the air flow portion.

[0055] The drive mounting portion may be configured to protrude forward from the rear protruding portion and to be surrounded by the air passing portion.

[0056] The roller may include a roller peripheral surface connected to the roller back side in front of the roller back side, a peripheral connection portion connected to the roller peripheral surface is provided at the edge of the roller back side, the peripheral connection portion is located further forward than the air passing portion, and is located further outward than the rear protrusion based on the radial direction of the roller.

[0057] The rear protrusion may include a rear outer peripheral surface extending rearward from the rear plate and surrounding the rear protrusion, and the air passing portion may include a passing outer peripheral surface extending rearward from the peripheral connecting portion and surrounding the air passing portion, and the passing outer peripheral surface is inserted into the interior of the rear protrusion and faces the rear outer peripheral surface on the inner side.

[0058] The rear protruding portion may further include a rear protruding surface connected to the rear outer peripheral surface at a rear side of the rear protruding portion, and the air flow portion is configured to protrude rearward from the rear protruding surface.

[0059] The air passage portion may further include an air passage surface connected to the passage outer peripheral surface at the rear side of the air passage portion and inserted into the rear protruding portion, the air passage surface being located in front of the rear protruding surface and shielding the open front side of the air flow portion.

[0060] The air flow portion may include a flow recessed surface recessed rearward from the rear convex surface, and the flow space is located between the flow recessed surface and the air passing surface.

[0061] The air passing portion may further include: a vent portion including a plurality of vent holes for passing air and protruding from the air passing surface toward the flow space. The air passing portion may further include: a reinforcing rib protruding forward of the vent portion and extending to surround the vent portion.

[0062] A plurality of the vents may be provided and arranged spaced apart from each other along the circumferential direction of the air passing surface.

[0063] The air passage portion may further include a back reinforcing rib located between the plurality of vents, protruding forward more than the vents, and extending in a radial direction of the drum.

[0064] The air passage portion may further include an inner reinforcing rib located between the vent portion and the rear center portion, protruding forward more than the vent portion, and extending along the circumferential direction of the drum.

[0065] The air passing portion may further include an outer reinforcing rib located between the vent portion and the peripheral connection portion, protruding further forward than the vent portion, and extending along the circumferential direction of the drum.

[0066] An embodiment of the present invention may further include: a rear sealer located between the air passing surface and the rear convex surface, configured to suppress leakage of air provided from the air flowing portion to the outside of the air passing surface.

[0067] The rear seal may include: an outer seal extending along an outer peripheral edge of the air flow portion and surrounding the air flow portion; and an inner seal extending along an inner peripheral edge of the air flow portion and surrounding the drive mounting portion.

[0068] On the other hand, in a clothing processing device according to an embodiment of the present invention, the air flow portion includes a flow space for allowing air to flow therein, the front side of the flow space is open to be exposed to the front, and at least a portion of the air passing portion is inserted into the rear plate and covers the open front side of the air flow portion.

[0069] In addition, the back side of the drum may include: a back central portion, facing the drive mounting portion and connected to the drive portion; and an air passing portion, surrounding the back central portion, allowing air provided from the air flow portion to pass through and be supplied to the interior of the drum, and the air passing portion protrudes backward from the back side of the drum and covers the front side of the air flow portion.

[0070] Embodiments of the present invention may provide a clothes treating apparatus in which a driving part and a drum are directly connected, thereby being able to effectively transmit the power of the driving part and to utilize an effective rotation method of the drum.

[0071] In addition, embodiments of the present invention may provide a clothes treating apparatus including a rear plate capable of coupling a driving part while effectively forming an air flow part for supplying air to a drum.

[0072] In addition, the embodiments of the present invention can provide a clothes treating apparatus capable of effectively increasing the capacity of a drum inside a housing and effectively using the internal space of the housing.

[0073] In addition, the embodiments of the present invention may provide a clothes treating apparatus having an efficient structure capable of effectively supplying air to the inside of a drum by directly shielding the air flow portion of the rear plate through the back side of the drum.

[0074] In addition, the embodiments of the present invention can provide a clothes treating apparatus in which a driving part is combined with a rear plate, which has excellent space utilization and can effectively use the layout space and can effectively increase the capacity of the drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Figure 1 FIG. 1 is a perspective view showing a clothes treating apparatus according to an embodiment of the present invention.

[0076] Figure 2 FIG. 1 is a cross-sectional view schematically showing the interior of a clothes treating apparatus according to an embodiment of the present invention.

[0077] Figure 3 FIG. 1 is a diagram showing a disassembled state of a clothes treating apparatus according to an embodiment of the present invention.

[0078] Figure 4 1 is a diagram showing a state where an air supply unit and an air flow unit are connected in one embodiment of the present invention.

[0079] Figure 5 FIG. 1 is a diagram showing a fan duct portion of a clothes treating apparatus according to an embodiment of the present invention.

[0080] Figure 6 1 is a cross-sectional view showing the air flow of the air supply unit according to one embodiment of the present invention.

[0081] Figure 7 The figure is a perspective view showing a rear plate of a clothes treating apparatus according to an embodiment of the present invention as viewed from the front.

[0082] Figure 8 FIG. 1 is a diagram showing a disassembled state of a connection structure of a rear plate of a clothes treating device according to an embodiment of the present invention.

[0083] Fig. 9 The present invention is a three-dimensional view showing a rear plate to which a rear cover is coupled in a clothes treating device according to an embodiment of the present invention when viewed from the rear.

[0084] Fig.10 is shown as viewed from the rear Fig. 9 A diagram showing the situation in which the rear plate with the rear cover removed.

[0085] Fig.11 FIG. 1 is a diagram showing a mounting bracket separated from a rear plate in a clothes treating apparatus according to an embodiment of the present invention.

[0086] Fig.12 FIG. 1 is a diagram showing an air flow portion provided on a rear plate in a clothes treating apparatus according to an embodiment of the present invention.

[0087] Fig.13 This is a diagram showing an air flow portion of a rear plate according to an embodiment of the present invention as viewed from the rear.

[0088] Fig.14 It is a perspective view showing a cross section of a rear plate according to an embodiment of the present invention.

[0089] Fig.15 This is a diagram showing a drum and a rear plate together according to an embodiment of the present invention.

[0090] Fig.16 FIG. 1 is a perspective view showing a drum of a clothes treating apparatus according to an embodiment of the present invention.

[0091] Fig.17 This is a diagram showing a state where the drum back side of a drum according to an embodiment of the present invention is exploded.

[0092] Fig.18 This is a perspective view showing a state where the back side of a drum according to an embodiment of the present invention is viewed from the front.

[0093] Fig.19 This is a diagram showing a cross section of the back side of a drum according to an embodiment of the present invention.

[0094] Fig. 20 2 is a cross-sectional view showing the back side of the drum inserted into the rear plate according to an embodiment of the present invention.

[0095] Fig.21 Yes Fig. 20 The air passing portion and the air flow portion are shown enlarged in the figure.

[0096] Fig. 22 The present invention is a perspective view showing an air passage portion provided on the back side of a drum as viewed from the front.

[0097] Fig.23 This is a diagram showing the back side of the drum, the rear plate and the driving part according to one embodiment of the present invention.

[0098] Fig.24 This is a cross-sectional view showing the rear center portion, the drive mounting portion, and the drive portion together according to one embodiment of the present invention.

[0099] Description of Reference Numerals

[0100] 10: Clothes treatment device; 30: Clothes door; 100: Box; 101: Upper plate; 102: Front plate; 1021: Clothes opening; 1023: Front duct; 103: Lower plate; 105: Base; 106: Air supply unit; 1061: Inflow duct; 1062: First heat exchanger; 1063: Second heat exchanger; 1064: Outflow duct; 1065: Water collection unit; 1066: Compressor; 107: Air supply unit; 1071: Air supply fan; 1073: Air supply motor; 108: Fan duct unit; 109: Side panel; 110: Rear panel; 120: Drive installation unit; 122: Installation Front part; 124: side part; 126: bracket; 128: bracket placement part; 130: air flow part; 132: flow concave surface; 133: flow inner peripheral surface; 134: flow outer peripheral surface; 135: flow space; 136: outflow guide; 137: inflow guide; 138: inflow extension; 1381: extension space; 1383: extension concave surface; 1385: extension peripheral surface; 140: rear protrusion; 148: rear peripheral surface; 149: rear protrusion; 200: drum; 210: drum back; 220: back center; 222: connection front part; 223: shaft Through hole; 224: bushing joint; 2245: bushing fastening member; 225: shaft peripheral portion; 2255: hook fastening portion; 226: connecting side portion; 230: air passing portion; 232: ventilation portion; 234: ventilation hole; 236: reinforcing rib; 2362: back reinforcing rib; 2364: inner reinforcing rib; 2366: outer reinforcing rib; 238: through the outer peripheral surface; 239: air passing surface; 240: peripheral connection portion; 260: shaft cap portion; 262: cap fastening member; 264: cap hook portion; 265: hook protrusion; 270: bushing portion; 272: shaft joint portion; 2722: shaft joint hole; 2724: toothed portion; 274: drum joint portion; 276: bushing recess; 280: clothing lifter; 290: drum peripheral surface; 300: rear seal; 310: inner seal; 320: outer seal; 400: drive portion; 410: first drive portion; 420: second drive portion; 430: drive shaft; 432: meshing portion; 435: shaft fixing member; 440: bearing extension portion; 442: bearing; 500: rear cover; 510: cover peripheral portion; 520: central cover portion; 522: drive cover surface; 524: drive peripheral portion; 5241: drive inner peripheral surface; 5243: drive outer peripheral surface DETAILED DESCRIPTION

[0101] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them.

[0102] However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. In addition, parts not related to the present invention are omitted in the drawings to clearly illustrate the present invention, and similar parts are given similar reference numerals throughout the specification.

[0103] In this specification, repeated description of the same structural elements will be omitted.

[0104] In addition, in this specification, if it is mentioned that a certain structural element is "connected" or "linked" to another structural element, it should be understood that it may be directly connected or linked to the other structural element, but there may be other structural elements between them. On the contrary, in this specification, if it is mentioned that a certain structural element is "directly connected" or "directly linked" to another structural element, it should be understood that there are no other structural elements between them.

[0105] In addition, the terms used in this specification are used to describe specific embodiments and are not intended to limit the present invention.

[0106] In addition, in this specification, unless the context clearly indicates otherwise, expressions in the singular include expressions in the plural.

[0107] In addition, in this specification, terms such as "including" or "having" are only used to specify the existence of features, numbers, steps, actions, structural elements, parts or their combinations recorded in the specification, and are not intended to exclude the possibility of the existence or addition of one or more other features or numbers, steps, actions, structural elements, parts or their combinations.

[0108] In addition, in this specification, the term "and / or" includes a combination of a plurality of items or a certain item among a plurality of items. In this specification, "A or B" may include "A", "B" or "A and B".

[0109] Figure 1 1 is a perspective view showing a clothes treating device 10 according to an embodiment of the present invention. Figure 2 It is shown Figure 1 FIG. 1 is a diagram of an internal cross section of a laundry treatment device 10 shown.

[0110] Reference Figure 1 and Figure 2 , a clothes treating apparatus 10 according to an embodiment of the present invention may include a housing 100 forming an appearance of the clothes treating apparatus 10 .

[0111] A front panel 102 may be provided on the front side of the box body 100, side panels 109 may be provided on both sides of the side direction Y of the box body 100, an upper panel 101 may be provided on the upper side of the box body 100, a lower panel 103 may be provided on the lower side of the box body 100, and a rear panel 110 may be provided on the rear side of the box body 100.

[0112] The front plate 102 , the side plate 109 , and the rear plate 110 may be formed in a shape extending upward along the up-down direction Z from the ground or the lower plate 103 .

[0113] The above-mentioned plates may be connected to each other and may together form the housing 100. The plates may be connected together to form a space inside which the drum 200 and the like are installed.

[0114] The front plate 102 may form the front of the box 100 and may be formed with a clothing opening 1021 for putting clothing into the interior. The clothing opening 1021 may be arranged at the center side of the front plate 102, and a clothing door 30 for opening and closing the clothing input port may be provided on the front plate 102.

[0115] The front panel 102 may include a control panel, which may include an operation portion for a user to input an operation signal and a display portion for displaying a treatment process of the laundry.

[0116] However, the control panel is not necessarily provided on the front plate 102, and may be provided on the upper plate 101, etc. In addition, a plurality of control panels may be provided and respectively provided on the front plate 102 and the upper plate 101, etc.

[0117] The clothes treating apparatus 10 according to an embodiment of the present invention can execute a drying program for clothes, and the operation unit can be configured to allow a user to input an execution instruction of the drying program.

[0118] An embodiment of the present invention may include a control unit, which may be separated from the interior of the control panel or the control panel and connected to the control panel via a signal. The control unit may be connected to the control panel and the drive unit 400 described later via a signal to control the drive unit 400 and the like and execute a drying program for clothes.

[0119] The upper plate 101 may form the top surface of the box 100, and may be configured to shield the interior of the box 100 at the upper portion of the box 100. The side panels 109 may respectively form two side surfaces in the lateral direction Y of the box 100. For example, the side panels 109 may include a first side panel forming one side surface in the lateral direction Y of the box 100 and a second side panel forming the other side surface in the lateral direction Y.

[0120] The lower plate 103 may form the bottom surface of the housing 100, and the air supply unit 106 and the heat pump described later may be disposed on the lower plate 103. The rear plate 110 may form the back surface of the housing 100, and the air flow unit 130 and the drive mounting unit 120 described later may be disposed on the rear plate 110. Details of the rear plate 110 will be described later.

[0121] On the other hand, refer to Figure 2 In one embodiment of the present invention, a drum front is provided at the front side of the drum 200, and a drum opening for putting clothes in can be provided on the drum front. The clothes put into the box 100 through the clothes opening 1021 provided on the front plate 102 can be put into the drum 200 through the drum opening. The drum 200 can be provided with the drum opening in a form in which the drum front is open as a whole.

[0122] A drum peripheral surface 290 surrounding the inner space of the drum 200 may be provided at the rear side of the drum front side, and a drum rear surface 210 may be provided at the rear side of the drum peripheral surface 290 . The edge side of the drum rear surface 210 may be combined with the drum peripheral surface 290 .

[0123] In one embodiment of the present invention, the drum 200 may be a front loader type including a rotation axis extending in the front-rear direction X and into which laundry is fed from the front. Compared with the top loader type, the front loader type is easier to feed and take out laundry.

[0124] On the other hand, the front plate 102 may support the drum 200 so that it can rotate. That is, the front plate 102 may support the front end of the drum 200 so that it can rotate. The front end of the drum 200 may also be received in the front plate 102 and supported.

[0125] For example, the front plate 102 may support the front end of the drum 200 rearwardly at the periphery of the clothing opening 1021 , whereby the clothing opening 1021 and the drum opening are arranged to face each other and the clothing opening 1021 and the inside of the drum 200 may communicate.

[0126] On the other hand, the front plate 102 may include a sealing gasket surrounding at least a portion of the clothing opening 1021. The sealing gasket may support the front end portion of the drum 200 so that it can rotate, and is configured to block or inhibit air from leaking to the outside from between the front plate 102 and the drum opening. The sealing gasket may be made of a plastic resin system or an elastomer, and an additional sealing member may be additionally combined on the inner circumferential surface of the sealing gasket.

[0127] On the other hand, a front wheel may be provided on the front plate 102, the front wheel contacts the front end of the drum 200 and supports the drum 200 so that it can rotate. The front wheel may be configured to support the outer peripheral surface of the drum opening, and a plurality of the front wheels may be provided along the periphery of the clothing opening 1021 and spaced apart from each other.

[0128] The front wheel may be configured to support the drum 200 above and below the front end portion of the drum 200 and rotate together with the drum 200 by rotation of the drum 200, thereby minimizing friction.

[0129] On the other hand, in one embodiment of the present invention, in order to dry the clothes, air, for example, hot air heated to a high temperature, can be supplied to the inside of the drum 200, and the air supplied to the inside of the drum 200 can be discharged from the inside of the drum 200 through the drum opening.

[0130] In an embodiment of the present invention, the front panel 102 may include a front duct 1023. The front duct 1023 may be provided at the front panel 102 and transfer the air exhausted from the drum 200 to the air supply part 106 described later.

[0131] The front duct 1023 may be configured to communicate with the drum opening or the clothing opening 1021 , and may also be disposed inside the front plate 102 , or communicate with the clothing opening 1021 from the outside of the front plate 102 inside the housing 100 through the sealing gasket. Figure 2 A front duct 1023 disposed inside the front plate 102 is shown.

[0132] Reference Figure 2 The drum opening and the clothing opening 1021 of the drum 200 may be connected to each other by the aforementioned sealing gasket or sealing member to maintain air tightness, and the front duct 1023 may be configured to communicate with the clothing opening 1021 and the drum opening inside the front plate 102, so that the air exhausted from the drum 200 flows in.

[0133] The front duct 1023 may be configured to extend from the inside of the front panel 102 to discharge air into the box 100. In one embodiment of the present invention, an air supply unit 106 may be provided inside the box 100, and the air supply unit 106 may receive the air discharged from the front duct 1023 by connecting with the front duct 1023.

[0134] Reference Figure 2 The air supply part 106 may be disposed inside the cabinet 100 and on the lower plate 103. A base part 105 including the air supply part 106 or a heat pump may be disposed on the upper portion of the lower plate 103.

[0135] The air supply unit 106 and the heat pump etc. can be placed on the base 105, and the base 105 can be combined with the lower plate 103 or formed as one with the lower plate 103. That is, the base 105 can also correspond to the lower plate 103 and form the bottom surface of the box 100.

[0136] The air supply unit 106 may include an inflow duct 1061, and the inflow duct 1061 may be connected to the front duct 1023. The inflow duct 1061 and the front duct 1023 may be separately manufactured and then combined, or may be formed as one body.

[0137] The air flowing into the air supply unit 106 through the inflow pipe 1061 can be dehumidified and heated, and then discharged from the air supply unit. Some structural elements of the heat pump can be built into the air supply unit 106 to dehumidify and heat the air, and the details of the dehumidification and heating of the air will be described later.

[0138] The air flowing in through the inflow duct 1061 can flow inside the air supply unit 106 and be discharged through the outflow duct 1064 of the air supply unit 106. The air supply unit 106 may further include an air supply unit 107 connected to the outflow duct 1064, and the air supply unit 107 may discharge air to the outside of the air supply unit 106 through an air supply fan 1071 rotated by an air supply motor 1073.

[0139] That is, air can flow into the air supply unit 106 through the inlet duct 1061 connected to the front duct 1023, and after the air inside the air supply unit 106 is dehumidified and heated, it can be discharged to the outside of the air supply unit 106 through the outlet duct 1064 and the air supply unit 107.

[0140] On the other hand, the rear plate 110 may include an air flow portion 130 for supplying air to the drum rear surface 210 , and the air supply portion 106 may discharge air to the air flow portion 130 and supply air to the drum rear surface 210 through the air flow portion 130 .

[0141] The air supply unit 106 may further include a fan duct unit 108 connected to the air supply unit 107 , and the fan duct unit 108 may connect the air supply unit 107 and the air flow unit 130 . That is, the air discharged by the air supply unit 107 may be supplied to the air flow unit 130 via the fan duct unit 108 .

[0142] The rear plate 110 may further include an inflow extension portion 138 extending from the air flow portion 130 , and the air supply portion 106 may provide air to the air flow portion 130 by being connected to the inflow extension portion 138 .

[0143] The air supplied from the air supply unit 106 may flow inside the air flow unit 130 and flow out to the drum back side 210. The air flow unit 130 may be opened at its front side 131 to allow the air to flow out to the front, and an air passing portion 230 may be provided at the drum back side 210, and the air flowing out of the air flow unit 130 flows into the air passing portion 230. The air passing portion 230 may be configured to allow the air flowing out of the air flow unit 130 to flow in and pass through and be supplied to the inside of the drum 200.

[0144] In one embodiment of the present invention, a circulation flow path is formed to circulate the air provided to the drum 200 through the air supply unit 106 and the air flow unit 130 and continuously supply the air to the inside of the drum 200. The circulation process of the air is described as follows.

[0145] When executing a clothes drying program, the air supplied from the air flow section 130 can be supplied to the inside of the drum 200 through the air passing section 230, the air inside the drum 200 can flow out to the outside of the drum 200 through the drum opening, and the air flowing out to the outside of the drum 200 can be supplied to the air supply section 106 via the front duct 1023.

[0146] The air supply section 106 is configured to receive air through an inflow duct 1061 connected to the front duct 1023, and use a heat pump to dehumidify and heat the air flowing inside the air supply section 106, so that the dehumidified and heated air passes through the outflow duct 1064 via the air supply section 107 and flows inside the fan duct section 108. The air flow section 130 allows the air flowing in through the fan duct section 108 to be supplied to the interior of the drum 200 again through the air passing section 230 of the drum 200.

[0147] Through the air circulation process as described above, low-humidity and high-temperature air can be continuously provided to the inside of the drum 200, and moisture in the clothes can be evaporated by the low-humidity and high-temperature air and discharged to the outside of the drum 200 together with the air.

[0148] On the other hand, refer to Figure 2 The structures of the rear plate 110 and the drum back surface 210 according to an embodiment of the present invention are briefly described as follows.

[0149] The rear plate 110 may include a drive mounting portion 120 and an air flow portion 130. The drive mounting portion 120 may be open to the rear to combine with the drive portion 400 at the rear, and the air flow portion 130 may be open to the front to discharge air toward the drum back 210.

[0150] The drum back side 210 may include a back side central portion 220 and an air passing portion 230. The back side central portion 220 may be disposed in front of the drive mounting portion 120 so as to face the drive mounting portion 120. The back side central portion 220 is connected to a drive shaft 430 of the drive portion 400 extending through the drive mounting portion 120, thereby providing a rotational force.

[0151] The air passing portion 230 may be disposed to face the air flowing portion 130 from the front, and the air flowing out from the open front surface 131 of the air flowing portion 130 passes through the air passing portion 230 and is supplied to the inside of the drum 200 .

[0152] In one embodiment of the present invention, by combining the driving portion 400 that provides rotational force to the drum 200 with the driving mounting portion 120 of the rear plate 110, the rotating axis of the drum 200 and the driving axis 430 of the driving portion 400 can be arranged on the same line. Therefore, the drum 200 can be rotated without using a connecting member such as a belt, so that the rotation speed and rotation direction of the drum 200 can be effectively adjusted without slipping, etc.

[0153] In addition, in one embodiment of the present invention, since the air flow portion 130 is formed on the rear plate 110 itself without being combined with additional components, it is possible to effectively prevent air from leaking from the air flow portion 130. Furthermore, by making the front side 131 of the air flow portion 130 open, air can flow smoothly from the inside of the air flow portion 130 toward the back side 210 of the drum.

[0154] on the other hand, Figure 3 FIG. 1 shows a disassembled state of a clothes treating apparatus 10 according to an embodiment of the present invention. Figure 3 The structural elements of the laundry treating apparatus 10 according to an embodiment of the present invention are briefly described as follows.

[0155] As mentioned above, the front plate 102 is disposed at the front side of the housing 100 and may include a clothes opening 1021 for inserting clothes. The drum 200 may be disposed behind the front plate 102, and the front of the drum 200 may be open to form a drum opening, and the clothes inserted through the clothes opening 1021 may be accommodated inside the drum opening.

[0156] The drum 200 may include: an opening peripheral portion surrounding the drum opening; a drum peripheral surface 290 surrounding the inside of the drum 200 at the rear side of the opening peripheral portion; and a drum back surface 210 connected to the drum peripheral surface 290 at the rear of the drum peripheral surface 290 .

[0157] A rear plate 110 may be provided at the rear of the drum 200. The rear plate 110 may be located at the rear side of the cabinet 100 to form the back side of the cabinet 100. The rear plate 110 may include an air flow portion 130 for supplying air to the inside of the drum 200, and a rear sealer 300 (rearsealer) may be disposed between the rear plate 110 and the drum back side 210 to prevent or suppress air leakage.

[0158] The rear seal 300 may include an inner seal 310 and an outer seal 320, wherein the inner seal 310 may be configured to inhibit air from leaking from the inner periphery of the air flow portion 130 to the outside of the air passing portion 230, and the outer seal 320 may be configured to inhibit air from leaking from the outer periphery of the air flow portion 130 to the outside of the air passing portion 230.

[0159] The rear plate 110 may include a driving installation portion 120 for installing the driving portion 400 , a mounting bracket 126 may be combined in front of the driving installation portion 120 , and the driving portion 400 may be combined in the rear of the driving installation portion 120 .

[0160] The driving part 400 may be coupled to the mounting bracket 126 via the driving mounting part 120, and the driving shaft 430 may penetrate the driving mounting part 120 and be connected to the back center part 220 of the drum back 210. The driving part 400 may include: a first driving part 410 directly coupled to the driving mounting part 120; a second driving part 420 coupled to the first driving part 410; and a driving shaft 430 extending forward from the first driving part 410.

[0161] A rear cover 500 may be combined behind the rear plate 110. The rear cover 500 may shield the rear plate 110 from behind and may form the back side of the laundry processing device 10. The rear cover 500 may also expose a portion of the rear plate 110 to the rear and form the back side of the laundry processing device 10 together with the rear plate 110.

[0162] The rear cover 500 is coupled to the rear surface of the rear plate 110 to shield the air flow unit 130 and the driving unit 400 from the outside. The rear cover 500 can reduce heat loss of air flowing in the air flow unit 130 and prevent the driving unit 400 from being impacted or damaged.

[0163] A base portion 105 may be disposed below the drum 200, and an air supply portion 106 and a heat pump may be provided on the base portion 105. The air supply portion 106 may dehumidify and heat the air exhausted from the drum 200, and supply the air to the inside of the drum 200 again through the air flow portion 130, and the heat pump may be configured such that at least a part of the heat pump is disposed inside the air supply portion 106, and dehumidifies and heats the air flowing in the air supply portion 106.

[0164] on the other hand, Figure 4 The figure shows the connection between the base portion 105 and the rear plate 110. Figure 5 The fan duct portion 108 connecting the air supply portion 107 and the air flow portion 130 is shown. Figure 6 A cross section of the air supply 106 is shown.

[0165] Reference Figures 4 to 6 The air supply unit 106 and the heat pump are described in detail below.

[0166] first, Figure 4 The base portion 105 is shown viewed from above, showing the inflow duct 1061 in the air supply portion 106 connected to the front duct 1023 of the front panel 102 .

[0167] The inflow duct 1061 may be inserted into the interior of the front plate 102, or connected to the front duct 1023 outside the front plate 102. The inflow duct 1061 may be formed as one body with the front duct 1023, or may be separately manufactured and then combined with each other.

[0168] The air supply portion 106 may be disposed on the base portion 105 , and may have a shape extending from the front plate 102 toward the rear plate 110 . Figure 4 The air supply unit 106 is shown extending in the front-rear direction X and arranged close to the base unit 105 in the side direction Y.

[0169] The air supply unit 106 is arranged at the lower part of the drum 200 and is located on the side of the lateral direction Y of the box body 100, for example, at a position adjacent to the first side panel in the first side panel and the second side panel arranged on both sides of the lateral direction Y of the box body 100, thereby ensuring a separation interval from the lowermost end of the drum 200 and preventing or minimizing physical interference with each other.

[0170] The air supply portion 106 may have a shape extending from the front plate 102 toward the rear plate 110 on the base portion 105, and the air flowing into the air supply portion 106 may flow from the front to the rear along the extending direction of the air supply portion 106. That is, the air of the air supply portion 106 may flow from the front plate 102 side to the rear plate 110 side.

[0171] An outflow duct 1064 may be provided at the rear side of the air supply unit 106, and the outflow duct 1064 may be connected to the air supply unit 107. The air supply unit 107 may include: an air supply fan housing, an air supply fan 1071 is built in the air supply fan housing; and an air supply motor 1073 connected to the air supply fan 1071 to provide a rotational force. The air supply fan 1071 may be configured to form a flow that circulates the air of the laundry processing device 10 according to an embodiment of the present invention.

[0172] One side of the air supply unit 107 may be connected to the outflow duct 1064, and the other side may be connected to the fan duct unit 108. That is, under the action of the air supply fan 1071, the air discharged from the air supply unit 106 and the air supply unit 107 may flow into the fan duct unit 108.

[0173] The fan duct 108 may be configured to connect the air supply unit 107 and the air flow unit 130. The air flow unit 130 is configured behind the drum back 210, and the air supply unit 107 is located below the drum 200, so the fan duct 108 may extend upward from the air supply unit 107 and connect to the air flow unit 130.

[0174] Reference Figure 5 The fan duct portion 108 is described in detail as follows.

[0175] The air supply unit 107 may be configured to discharge air to the outside of the air supply fan housing through the rotation of the air supply fan 1071 , and the air supply fan 1071 may rotate around a rotation axis extending in the front-rear direction X as a center.

[0176] That is, the air supply section 107 can be located below the air flow section 130, and the air supply fan 1071 is configured to rotate around a rotation axis extending along the front-to-back direction X and discharge air above the air supply section 107 so as to smoothly blow air to the air flow section 130 located above.

[0177] In the air supply unit 107, an opening for discharging air may be formed above the air supply fan 1071, and the fan duct unit 108 may be connected to the opening to receive air. The fan duct unit 108 may extend from the air supply unit 107 toward the air flow unit 130 and be configured to discharge air to the air flow unit 130.

[0178] A space for air flow may be formed inside the fan duct 108, and an opening for discharging air is formed at one end facing the air flow portion 130. The one end of the fan duct 108 may be coupled to the rear plate 110, and the other end facing the air supply portion 107 may be coupled to the air supply portion 107.

[0179] Refer again Figure 4The rear plate 110 may include an inflow extension portion 138 extending from the air flowing portion 130 , and the inflow extension portion 138 may include an extension space 1381 extending from the flow space 135 formed inside the air flowing portion 130 .

[0180] The inflow extension portion 138 may extend from the air flow portion 130 toward the air supply portion 106. The inflow extension portion 138 is open to the front, and at least a portion of the air supply portion 107 may be inserted into the extension space 1381. For example, in the air supply portion 106, at least a portion of the fan duct portion 108 and at least a portion of the air supply portion 107 may be located in the extension space 1381.

[0181] Figure 4 The air flow portion 130 including a flow space 135 opened forward according to an embodiment of the present invention is shown, and the drive mounting portion 120 may be provided at the center side of the air flow portion 130 configured in a ring shape.

[0182] In the present invention, the ring shape refers to a ring shape forming a closed cross section inside, which may be not only a circle but also a shape corresponding to the periphery of a polygon.

[0183] The drive mounting portion 120 may be configured to be penetrated by the drive portion 400 coupled thereto. The drive portion 400 may include a drive shaft 430 and a bearing extension 440 surrounding the drive shaft 430, and the drive shaft 430 and the bearing extension 440 may extend to penetrate the drive mounting portion 120 together.

[0184] on the other hand, Figure 4 The heat pump is shown to be provided at the base portion 105. The heat pump may include a plurality of heat exchangers and a compressor 1066, and is configured such that the fluid compressed by the compressor 1066 exchanges heat with the outside in the process of passing through the plurality of heat exchangers.

[0185] Specifically, the heat pump may include a first heat exchanger 1062, a second heat exchanger 1063, and a compressor 1066. The heat pump may include a fluid circulating in the first heat exchanger 1062, the second heat exchanger 1063, and the compressor 1066.

[0186] Reference Figure 6 , schematically showing a first heat exchanger 1062 and a second heat exchanger 1063 of a heat pump built into the air supply unit 106 in one embodiment of the present invention, Figure 4 and Figure 6 A compressor 1066 is shown outside the air supply 106 .

[0187] The first heat exchanger 1062 may be an evaporator that absorbs heat from the outside, and the second heat exchanger 1063 may be a condenser that releases heat to the outside. The first heat exchanger 1062 and the second heat exchanger 1063 may be arranged on a flow path for air flow in the air supply unit 106, and are configured to dehumidify and heat the air.

[0188] Specifically, the first heat exchanger 1062 may be located upstream of the second heat exchanger 1063 on the air flow path of the air supply unit 106. That is, the first heat exchanger 1062 may be located in front of the second heat exchanger 1063 and may be located facing the inflow duct 1061.

[0189] In the air supply part 106, air flowing in through the inflow duct 1061 may pass through the first heat exchanger 1062. The air exhausted from the inside of the drum 200 and flowing in through the inflow duct 1061 may contain a large amount of moisture evaporated from the laundry.

[0190] The air flowing in through the inflow pipe 1061 will pass through the first heat exchanger 1062, and the water vapor in the air whose heat is taken away by the first heat exchanger 1062 will be condensed in the first heat exchanger 1062 to become a water droplet form, so that it can be removed from the air.

[0191] The air supply part 106 may transfer condensed water condensed in the first heat exchanger 1062 to a water collecting part 1065 disposed outside the air supply part 106. That is, the water collecting part 1065 may be configured to store condensed water generated in the first heat exchanger 1062 of the air supply part 106.

[0192] On the other hand, the second heat exchanger 1063 may be located downstream of the air supply unit 106 than the first heat exchanger 1062. That is, the second heat exchanger 1063 may be located behind the first heat exchanger 1062 and configured to face the air supply unit 107 or the outflow duct 1064.

[0193] The second heat exchanger 1063 may be a condenser that discharges heat of the fluid to the outside, and the air passing through the second heat exchanger 1063 may be heated by the second heat exchanger 1063 and flow toward the air supply unit 107 .

[0194] In one embodiment of the present invention, as the second heat exchanger 1063 is located downstream of the first heat exchanger 1062 , the air cooled and dehumidified by the first heat exchanger 1062 can be discharged from the air supply unit 106 again in a heated state through the second heat exchanger 1063 .

[0195] Figure 6The air supply fan 1071 of the air supply unit 107 that discharges air to the outside through the second heat exchanger 1063 is shown, and the air supply motor 1073 connected to the air supply fan 1071 behind the air supply fan 1071 is shown. At least a part of the air supply fan 1071 and the air supply motor 1073 can be arranged in the extension space 1381 of the aforementioned inlet extension portion 138.

[0196] Refer again Figure 4 , shows a water collecting portion 1065 storing condensed water removed from the air by the first heat exchanger 1062 according to an embodiment of the present invention. As mentioned above, in the base portion 105, the air supply portion 106 can be located on one side of the lateral direction Y, and the water collecting portion 1065 and the compressor 1066 can be configured on the other side of the lateral direction Y in the base portion 105.

[0197] In one embodiment of the present invention, since the driving unit 400 for rotating the drum 200 is arranged on the rear plate 110, compared with the case where the driving unit 400 is arranged on the base portion 105, the space on the base portion 105 can be effectively ensured, and the size and capacity of the water collecting portion 1065 can be effectively increased.

[0198] On the other hand, the compressor 1066 is located behind the water collecting portion 1065 , thereby minimizing the transmission of noise and vibration generated by the operation of the compressor 1066 to a user who uses the laundry treating apparatus 10 in front of the laundry treating apparatus 10 .

[0199] on the other hand, Figure 7 The rear panel 110 incorporating various structural elements is shown as viewed from the front. Figure 8 The figure shows a state where various components connected to the rear plate 110 are disassembled.

[0200] Reference Figure 7 and 8 The structural elements that can be combined or connected to the rear plate 110 with the rear plate 110 as the center are described as follows.

[0201] The rear plate 110 may be located at the rear side of the cabinet 100 to constitute the back side of the cabinet 100. The rear plate 110 may be configured to face the drum back side 210, and may be provided with a driving installation part 120 for installing the driving part 400 and an air flow part 130 for supplying air to the drum 200.

[0202] A rear seal 300 capable of preventing air from leaking from the air flow portion 130 to the outside except the air passing portion 230 may be disposed in front of the rear plate 110. That is, the rear seal 300 may be disposed on the front surface of the rear plate 110.

[0203] The air flow portion 130 may be configured in an annular shape and extend along the periphery of the drive mounting portion 120, and the rear seal 300 may include an inner seal 310 and an outer seal 320. The inner seal 310 may extend along the inner periphery of the air flow portion 130, and the outer seal 320 may extend along the outer periphery of the air flow portion 130.

[0204] The outer seal 320 may be configured to prevent or inhibit the air flowing out of the air flow portion 130 from leaking to the outside of the air flow portion 130 , and the inner seal 310 may be configured to prevent or inhibit the air flowing out of the air flow portion 130 from leaking toward the drive mounting portion 120 .

[0205] The rear plate 110 may further include an inflow extension portion 138 extending from the air flow portion 130 toward the air supply portion 106, so that the outer periphery of the air flow portion 130 may be open on the inflow extension portion 138 side, and the outer seal 320 may be configured to form a ring shape with a closed cross-section and extend in a manner that crosses between the air flow portion 130 and the inflow extension portion 138.

[0206] On the other hand, the fan duct portion 108 may be disposed in front of the rear plate 110 and configured to supply air to the flow space 135 inside the air flow portion 130 through the inflow extension portion 138. At least a portion of the fan duct portion 108 may be inserted into the extension space 1381 inside the inflow extension portion 138 and connected to the air flow portion 130.

[0207] The fan duct portion 108 may be combined with and fixed to the air supply portion 107 of the air supply portion 106 , or may be combined with and fixed to the rear plate 110 together with the air supply portion 107 .

[0208] On the other hand, the mounting bracket 126 can be combined with the drive mounting portion 120 in front of the drive mounting portion 120. That is, the mounting bracket 126 can be arranged on the front side of the drive mounting portion 120. Under the action of the mounting bracket 126, the strength of the drive mounting portion 120 can be strengthened, and the combination stability of the drive portion 400 can be enhanced.

[0209] The central side of the drive mounting portion 120 may be penetrated by the drive portion 400, and the central side of the mounting bracket 126 may also be penetrated by the drive portion 400. That is, the mounting bracket 126 may be configured to extend along the circumferential direction of the drive mounting portion 120 and surround at least a portion of the drive portion 400. The mounting bracket 126 may shield at least a portion of the drive mounting portion 120 from the front.

[0210] On the other hand, the driving part 400 may be coupled to the rear plate 110 at the rear of the rear plate 110. The driving part 400 may be fixed by inserting at least a portion thereof into the driving mounting part 120 of the rear plate 110. The driving part 400 may be coupled to the mounting bracket 126 through the driving mounting part 120.

[0211] As described later, the driving unit 400 may include a first driving portion 410 and a second driving portion 420 . The first driving portion 410 may be directly coupled to the driving mounting portion 120 , and the second driving portion 420 may be coupled to and fixed to the first driving portion 410 .

[0212] The driving portion 400 may include a driving shaft 430 protruding forward and a bearing extension portion 440 surrounding a portion of the driving shaft 430 , and the driving shaft 430 may penetrate the bearing extension portion 440 and extend forward.

[0213] The driving shaft 430 and the bearing extension 440 may penetrate the driving mounting portion 120 and the mounting bracket 126 and extend toward the rear center portion 220 of the drum rear surface 210 .

[0214] On the other hand, a rear cover 500 may be provided behind the rear plate 110. The rear cover 500 may be combined with the rear plate 110 behind the rear plate 110. The rear cover 500 may be configured to cover the entire rear plate 110, or to have a structure that shields a portion of the air flow unit 130 and the driving unit 400.

[0215] Fig. 9 FIG. 1 shows a situation where the rear plate 110 to which the rear cover 500 is coupled is viewed from the rear. Fig.10 Shows from Fig. 9 The rear plate 110 is removed from the rear cover 500.

[0216] Reference Fig. 9 and Fig.10 As described later, the rear plate 110 may be formed to protrude rearwardly and have an air flow portion 130 and an inflow extension portion 138 , and may be formed to protrude rearwardly and have a rear protruding portion 140 having a wider cross-sectional area than the air flow portion 130 and the inflow extension portion 138 .

[0217] In an embodiment of the present invention, the rear cover 500 may be configured to cover the rear protruding portion 140 , the air flow portion 130 , and the inflow extension portion 138 by being combined with the rear plate 110 .

[0218] exist Fig. 9 In the embodiment, a portion of the rear plate 110 that is not covered by the rear cover 500 and is exposed to the outside may be a rear reference surface, and the rear protruding portion 140 and the air flow portion 130 may be configured to protrude rearward from the rear reference surface.

[0219] The drive unit 400, which is connected by inserting at least a part of the drive mounting unit 120 from the rear side into the drive mounting unit 120, can be shielded from the outside by the rear cover 500. That is, the drive mounting unit 120 is located in front of the drive unit 400, the rear cover 500 is located behind the drive unit 400, and the air flow unit 130 is located on the peripheral side of the drive unit 400, thereby protecting the drive unit 400 from external impacts and the like.

[0220] The shape of the rear cover 500 may be configured to correspond to the rear protruding portion 140, the air flow portion 130, and the inflow extension portion 138 of the rear plate 110. That is, the rear cover 500 may include: a protruding cover portion having a shape corresponding to the rear protruding portion 140, protruding rearward to form a space inside; and a flow cover portion protruding rearward from the protruding cover portion to form a space inside.

[0221] The air flow cover may include a cover peripheral portion 510 located behind the air flow portion 130 and a central cover disposed at the center of the cover peripheral portion 510 and located behind the driving portion 400. The rear cover 500 will be described in detail later.

[0222] on the other hand, Fig.11 The drive mounting part 120 and the mounting bracket 126 of one embodiment of the present invention are shown. The drive mounting part 120 may be configured to protrude forward from the rear plate 110, and may be combined with the drive part 400 at the rear so that at least a portion of the drive part 400 passes through the drive mounting part 120 and extends forward.

[0223] The drive mounting portion 120 may include: a mounting side portion 124 protruding forward from the rear plate 110 to form the periphery of the drive mounting portion 120; and a drive mounting portion 120 connected to the front end of the mounting side portion 124, and a drive portion 400 is combined with the rear of the drive mounting portion 120.

[0224] A bracket seating portion 128 capable of coupling with the mounting bracket 126 may be provided on the front side of the drive mounting portion 120 .

[0225] on the other hand, Fig.12 FIG. 1 shows the air flow portion 130 of the rear plate 110 in the laundry treatment device 10 according to an embodiment of the present invention. Fig.13 FIG. 1 shows the air flow portion 130 of the rear plate 110 as viewed from the rear. Fig.14 FIG. 1 shows a cross section of the rear plate 110 viewed from the side. Figure 12 to Figure 14 The rear plate 110 is described in detail as follows.

[0226] First, as mentioned above, the laundry processing device 10 according to an embodiment of the present invention may include a housing 100, a drum 200, and a driving unit 400. A rear plate 110 may be provided at the rear side of the housing 100. The drum 200 may be rotatably provided inside the housing 100 to accommodate laundry inside the drum 200. A drum back side 210 facing the rear plate 110 is provided at the rear side of the drum 200. The driving unit 400 may be provided behind the rear plate 110 and penetrate the rear plate 110 to be connected to the drum 200.

[0227] Reference Figure 12 to Figure 14 The rear plate 110 includes: a drive mounting portion 120, the drive portion 400 is combined with the drive mounting portion 120; and an air flow portion 130, which surrounds the drive mounting portion 120 and provides air to the drum 200, and a flow space 135 for air flow is formed inside the air flow portion 130, and the front side 131 of the air flow portion 130 is open to expose the flow space 135 to the front.

[0228] In one embodiment of the present invention, the driving part 400 for driving the drum 200 may not be located inside the housing 100, but may be located behind the rear plate 110. The driving shaft 430 of the driving part 400 combined with the driving mounting part 120 of the rear plate 110 may be located on the same line as the rotation axis of the drum 200, and the driving shaft 430 may provide a rotational force to the drum 200 by combining with the drum 200.

[0229] When the driving unit 400 is arranged inside the casing 100, for example, in the base 105, etc., since it is necessary to ensure not only the layout space of the air supply unit 106 and the heat pump of the base 105 but also the layout space of the driving unit 400, there may be design constraints on the layout structure of the air supply unit 106 and the heat pump, and it may be difficult to ensure the required size of each structural element due to the narrow space.

[0230] In addition, the driving shaft 430 of the driving unit 400 and the rotating shaft of the drum 200 are separated from each other. Therefore, an additional transmission unit, such as a belt, is required to transmit the rotating force from the driving shaft 430 to the drum 200. If the rotating force is transmitted to the drum 200 by using a belt, the rotation speed and rotation direction control of the driving shaft 430 may be restricted due to slippage of the belt, etc.

[0231] On the other hand, even if the driving unit 400 is arranged at the rear of the drum 200 and the driving shaft 430 of the driving unit 400 is kept consistent with the rotation axis of the drum 200, when the driving unit 400 is arranged inside the box 100, the capacity of the drum 200 may be reduced in order to ensure the layout space of the driving unit 400, which is disadvantageous.

[0232] However, in one embodiment of the present invention, since the drive mounting portion 120 is provided on the rear plate 110 and the drive portion 400 is combined with the drive mounting portion 120 at the rear of the rear plate 110, the drive portion 400 is removed from the interior of the housing 100, thereby improving the ease of arrangement of various structural elements and facilitating ensuring the capacity of the drum 200. In addition, since the drum 200 and the drive portion 400 are directly connected, it is beneficial to control the rotation speed and rotation direction of the drive portion 400, thereby facilitating the construction of an efficient rotation strategy for the drum 200.

[0233] On the other hand, in an embodiment of the present invention, the rear plate 110 may include an air flow portion 130. Air for supplying to the inside of the drum 200 to dry the laundry may flow inside the air flow portion 130.

[0234] That is, a flow space 135 for allowing air to flow may be formed inside the air flow portion 130 . Fig.12 An air flow portion 130 including a flow space 135 is shown.

[0235] The air flow portion 130 may be integrally formed with the rear plate 110 , or may be manufactured separately and then combined with the rear plate 110 . Figure 12 to Figure 14 FIG. 1 shows a situation in which the air flow portion 130 and the rear plate 110 are integrally formed according to an embodiment of the present invention.

[0236] In the case where the air flow portion 130 and the rear plate 110 are integrally formed, it is advantageous because air leakage from a joint portion between the air flow portion 130 and the rear plate 110 can be prevented in advance.

[0237] In addition, the air flow unit 130 may be configured in a form in which the front side 131 is open. Since the front side 131 of the air flow unit 130 is open, the flow space 135 inside the air flow unit 130 may be exposed to the front. Thus, the air flowing in the flow space 135 may flow out to the front through the open front side 131 of the air flow unit 130 and be supplied to the air passing portion 230 of the drum back side 210.

[0238] In one embodiment of the present invention, since the front surface 131 of the air flow unit 130 is open, it is conducive to the formation of air flow flowing forward. For example, when the front surface of the air flow unit 130 is closed, when a plurality of holes are formed on the front surface or the front surface is configured as a grille, during the process of air flowing forward, flow resistance may be generated due to the portion other than the holes, and the flow rate of air flowing toward the drum back surface 210 may be reduced.

[0239] In one embodiment of the present invention, since the front surface 131 of the air flow unit 130 is entirely open, the air flowing in the flow space 135 can effectively flow forward. However, one embodiment of the present invention is not necessarily limited to this, and only a portion of the front surface 131 of the air flow unit 130 may be opened as needed.

[0240] On the other hand, in one embodiment of the present invention, the air flow portion 130 may protrude backward from the rear plate 110 to form the flow space 135 inside the air flow portion 130. That is, the air flow portion 130 may protrude backward from the rear plate 110, a space is formed inside the air flow portion 130, and the front side 131 of the air flow portion 130 is open.

[0241] Although the air flow portion 130 can also be manufactured separately from the rear plate 110 and then combined on the back side of the rear plate 110, Figure 12 to Figure 14 FIG. 4 shows a case where a portion of the rear plate 110 is formed to protrude rearward to provide the air flow portion 130 according to an embodiment of the present invention.

[0242] In one embodiment of the present invention, since the air flow portion 130 does not protrude forward of the rear plate 110 but protrudes backward and a flow space 135 is formed inside the air flow portion 130, the space inside the box 100 can be effectively ensured, and the capacity of the drum 200 can be effectively ensured.

[0243] On the other hand, in an embodiment of the present invention, the air flow portion 130 may be bent or curved by the rear plate 110 and protrude rearward, thereby forming the flow space 135 open to the front inside.

[0244] Specifically, in one embodiment of the present invention, the air flow portion 130 may be provided as a part of the rear plate 110. That is, the air flow portion 130 may be formed by molding a part of the rear plate 110 to protrude rearward.

[0245] As described above, in one embodiment of the present invention, a portion of the rear plate 110, such as the outer peripheral edge of the drive mounting portion 120, is formed to protrude rearward through a stamping process of the rear plate 110, thereby forming the air flow portion 130 and the rear plate 110 as one body, thereby effectively preventing air from leaking from the flow space 135.

[0246] In addition, when the air flow portion 130 is manufactured separately and combined with the rear plate 110, it is necessary to perform a manufacturing process of the air flow portion 130, a combining process of the air flow portion 130, and a sealing process between the air flow portion 130 and the rear plate 110. Different from this, in one embodiment of the present invention, since the air flow portion 130 is molded as a part of the rear plate 110 during the processing of the rear plate 110, it is more advantageous to omit the manufacturing process described above.

[0247] The air flow portion 130 as described above may include a flow inner peripheral surface 133, a flow outer peripheral surface 134, and a flow recessed surface 132. As described above, the air flow portion 130 may be configured to surround the drive mounting portion 120, and may be configured in a ring shape.

[0248] The flow inner circumferential surface 133 may protrude and extend rearward from the rear plate 110, and extend along the inner circumference of the flow space 135. The flow inner circumferential surface 133 may be configured in an annular shape and extend in a manner to surround the drive mounting portion 120. The flow inner circumferential surface 133 may be configured to protrude rearward from the rear plate 110 and surround the drive portion 400. The specific cross-sectional shape of the flow inner circumferential surface 133 may be configured in an annular shape corresponding to the cross-sectional shape of the drive mounting portion 120.

[0249] The outer flow surface 134 may be formed to protrude rearward from the rear plate 110 and extend along the outer periphery of the flow space 135. The outer flow surface 134 may be spaced apart from the inner flow surface 133, so that the flow space 135 is formed therebetween.

[0250] The flow outer peripheral surface 134 may be located outside the flow inner peripheral surface based on the radial direction of the annular air flow portion 130 and may form a closed cross section or one side may be open and connected to the flow peripheral edge portion of the inflow extension portion 138 described later.

[0251] The extended concave surface 1383 may be located behind the drum back surface 210 and may be formed in an annular shape. The inner periphery of the extended concave surface 1383 is connected to the flow inner peripheral surface 133 and the outer periphery is connected to the flow outer peripheral surface 134 , thereby defining a flow space 135 .

[0252] The drum back surface 210 may be located in front of the extended recessed surface 1383, and the extended recessed surface 1383 may be arranged parallel to the drum back surface 210. The extended recessed surface 1383 may face the air passing portion 230 described later, and the extended recessed surface 1383 may directly face the air passing portion 230 through the open front surface 131.

[0253] In one embodiment of the present invention, the air flow portion 130 can be formed by bending or curving a portion of the rear plate 110 backward, and can include a flow inner peripheral surface 133, a flow outer peripheral surface 134, a flow recessed surface 132 and an open front surface 131. The flow space 135 defined by the flow inner peripheral surface 133, the flow outer peripheral surface 134 and the flow recessed surface 132 can be exposed to the back side 210 of the drum through the open front side 131.

[0254] On the other hand, in one embodiment of the present invention, the rear plate 110 includes a rear protrusion 140 in which a space is formed and the rear protrusion 140 protrudes rearward, and the air flow portion 130 can be configured to protrude rearward from the rear protrusion 140 .

[0255] Specifically, the rear protrusion 140 may be formed by protruding from the rear plate 110 to the rear. The rear protrusion 140 may be manufactured separately and then combined with the rear plate 110, or may be formed as Figure 12 to Figure 14 As shown, a portion of the rear plate 110 is protruded rearward to form a rear protrusion 140 .

[0256] A space may be formed inside the rear protrusion 140 , and the space may be open to the front. That is, the inner space of the box body 100 may be increased by the size of the rear protrusion 140 protruding rearward from the rear plate 110 .

[0257] In one embodiment of the present invention, since the rear plate 110 is provided with the rear protrusion 140 , the limited internal space of the cabinet 100 can be effectively increased, and as the rear space of the drum 200 increases, the size and capacity of the drum 200 can be effectively increased.

[0258] On the other hand, the rear protruding portion 140 may include a rear outer peripheral surface 148 and a rear protruding surface 149. The rear outer peripheral surface 148 may extend rearward from the rear plate 110 and surround the rear protruding portion 140, and the rear protruding surface 149 may be connected to the rear outer peripheral surface 148 at the rear side of the rear protruding portion 140. The air flow portion 130 may be configured to protrude rearward from the rear protruding surface 149.

[0259] Specifically, the rear outer peripheral surface 148 may be configured to extend rearward from the rear plate 110 to surround the rear protruding portion 140. That is, the rear outer peripheral surface 148 may be configured to surround the space inside the rear protruding portion 140.

[0260] Reference Figure 12 to Figure 14 The rear plate 110 may include a rear reference surface located outside the rear protrusion 140. The rear reference surface may have a flat plate shape and may be configured to surround the periphery of the rear protrusion 140.

[0261] In an embodiment of the present invention, the rear reference surface may serve as a reference for defining the positions of the rear protruding portion 140 and the air flowing portion 130 .

[0262] The rear outer peripheral surface 148 may protrude and extend rearward from the rear reference surface of the rear plate 110. The rear outer peripheral surface 148 may extend along the periphery of the rear protruding portion 140. That is, the rear outer peripheral surface 148 may extend in a manner of surrounding the space inside the rear protruding portion 140.

[0263] The rear outer peripheral surface 148 may be configured to have a ring shape with a closed cross section, or may be configured to have one side of the ring shape open. The rear outer peripheral surface 148 may extend in a shape corresponding to the air flow portion 130 .

[0264] For example, when viewed from the rear of the rear plate 110 , the rear outer peripheral surface 148 may be spaced outward from the flow outer peripheral surface 134 of the air flow portion 130 and extend to surround the air flow portion 130 and the inflow extension portion 138 .

[0265] On the other hand, the rear protruding surface 149 may be located further rearward than the rear reference surface and arranged parallel to the rear reference surface. The rear protruding surface 149 may be connected to the rear outer peripheral surface 148 and configured to shield the space inside the rear protruding portion 140 from the rear.

[0266] The air flow portion 130 protrudes rearward from the rear protruding portion 140, and therefore, the extended concave surface 1383 of the air flow portion 130 may be located more rearward than the rear protruding surface 149 of the rear protruding portion 140. The flow outer peripheral surface 134 of the air flow portion 130 may be located at the same position as or more inner than the rear outer peripheral surface 148 based on the radial direction of the air flow portion 130, and the flow outer peripheral surface 134 may extend rearward from the rear protruding surface 149.

[0267] The inner flow surface 133 may be located inside the rear outer surface 148 and may protrude rearward from the rear protruding surface 149. The inner flow surface 133 and the outer flow surface 134 may have the same or different lengths extending rearward from the rear protruding surface 149 as required.

[0268] In an embodiment of the present invention, since the rear plate 110 is provided with the rear protruding portion 140 protruding rearward, a space can be ensured behind the drum 200 , and the capacity of the drum 200 can be effectively increased.

[0269] As will be described later, in one embodiment of the present invention, since at least a portion of the drum back surface 210 protrudes rearward from the drum 200 , the capacity of the drum 200 can be increased.

[0270] Furthermore, in one embodiment of the present invention, since the air flow portion 130 protrudes rearward from the rear protruding surface 149 of the rear protruding portion 140, when at least a portion of the drum 200 is inserted into the rear protruding portion 140, the air of the air flow portion 130 can be effectively transferred to the back side 210 of the drum.

[0271] On the other hand, in one embodiment of the present invention, the drive mounting portion 120 may be configured to protrude forward from the rear plate 110 to form a space at the rear. The drive mounting portion 120 may be configured to protrude forward from the rear protruding portion 140 and be surrounded by the air passing portion 230. The drive mounting portion 120 may protrude forward from the rear protruding surface 149 of the rear protruding portion 140.

[0272] The drive mounting portion 120 may include: a mounting side portion 124 protruding and extending forward from the rear protruding portion 140 ; ​​and a mounting front portion 122 located further forward than the rear protruding surface 149 and connected to the mounting side portion 124 .

[0273] The mounting side surface portion 124 may protrude and extend from the rear protruding surface 149 in the front direction and extend along the periphery of the driver mounting portion 120. That is, the mounting side surface portion 124 may form the periphery surface of the driver mounting portion 120. The mounting side surface portion 124 may be configured to surround the driver portion 400 coupled to the driver mounting portion 120 at the rear of the rear plate 110.

[0274] The installation side surface portion 124 may be configured in a ring shape, and a space may be formed inside thereof. The installation front surface portion 122 may shield the space from the front.

[0275] The drive unit 400 may be combined at the rear of the front mounting portion 122, and the aforementioned mounting bracket 126 may be combined at the front of the front mounting portion 122. In one embodiment of the present invention, the drive mounting portion 120 is formed to protrude forward, and a space is formed inside the drive mounting portion 120, and the space is open to the rear so that at least a part of the drive unit 400 can be inserted and combined with the drive mounting portion 120, thereby minimizing the length of the drive unit 400 protruding backward from the rear plate 110, and stably fixing and supporting the drive unit 400. The drive mounting portion 120 may protrude forward from the rear protruding portion 140, in which case the front mounting portion 122 may be located at a position further rearward than the rear reference surface.

[0276] On the other hand, in one embodiment of the present invention, the rear plate 110 may include an inflow extension portion 138 extending from the air flow portion 130. The inflow extension portion 138 may protrude rearward from the rear reference surface or protrude rearward from the rear protruding surface 149 of the rear protruding portion 140.

[0277] exist Figure 12 to Figure 14 1 shows an inflow extension portion 138 formed by protruding backward from the rear protruding surface 149 according to an embodiment of the present invention. The inflow extension portion 138 may protrude backward to form an extension space 1381 therein. The extension space 1381 may be configured to extend from the flow space 135 of the air flow portion 130.

[0278] The inflow extension portion 138 may include an extension recessed surface 1383 and an extension peripheral surface 1385. The extension recessed surface 1383 may shield the extension space 1381 at the rear of the extension space 1381. The extension recessed surface 1383 may extend from the flow recessed surface 132. That is, the extension recessed surface 1383 and the flow recessed surface 132 may form a surface located at the rear of the rear convex surface 149.

[0279] The extended peripheral surface 1385 may be configured to surround the extended space 1381. The extended recessed surface 1383 may be connected to a rear end of the extended peripheral surface 1385. The extended peripheral surface 1385 may extend from the flow outer peripheral surface 134 of the air flow portion 130.

[0280] Reference Fig.12 The flow peripheral surface 134 may be configured as an open ring between the air flow portion 130 and the inflow extension portion 138. That is, the flow peripheral surface 134 may be configured to be open between one side and the other side thereof so that the flow space 135 and the extension space 1381 are connected to each other.

[0281] The flow peripheral surface may be connected to the one side and the other side of the flow outer peripheral surface 134, and extend along the periphery of the extension space 1381. That is, the flow peripheral surface may form a closed cross section including the air flow portion 130 and the inflow extension portion 138 together with the flow outer peripheral surface 134. The length of the flow peripheral surface extending rearward from the rear protruding surface 149 may be the same as that of the flow outer peripheral surface 134.

[0282] In an embodiment of the present invention, as the rear plate 110 is formed with the rear protruding portion 140 and the air flow portion 130 , the rear plate 110 may have a stepped shape when viewed from the side. Fig.14 The cross-sectional shape of the rear plate 110 having a step due to the rear protruding portion 140 and the air flow portion 130 is shown.

[0283] On the other hand, in an embodiment of the present invention, an air guide portion may be provided in the air flow portion 130. The air flow portion 130 may have a shape protruding in the flow space 135, and may be configured to guide the flow of air in the flow space 135.

[0284] The air guide portion may be configured to protrude from the inner side of the air flow portion 130 facing the flow space 135. For example, the air guide portion may be configured to protrude from the flow inner peripheral surface 133, the flow outer peripheral surface 134, or the flow concave surface 132 of the air flow portion 130.

[0285] The air guide may include at least one of an outflow guide 136 and an inflow guide 137. Figure 12 to Figure 14 4 shows an outflow guide portion 136 and an inflow guide portion 137 disposed inside the air flow portion 130 according to an embodiment of the present invention.

[0286] Specifically, the outflow guide 136 may have a shape protruding from the flow concave surface 132 toward the open front surface 131 of the air flow portion 130. The outflow guide 136 may be formed integrally with the flow concave surface 132, or may be separately manufactured and then disposed inside the air flow portion 130.

[0287] exist Figure 12 to Figure 14 2 shows an outflow guide 136 integrally formed with the flow concave surface 132 according to an embodiment of the present invention. The outflow guide 136 may be formed to protrude toward the front surface 131 that is partially open to the flow concave surface 132, that is, the drum back surface 210.

[0288] The outflow guide 136 protrudes from the flow space 135 toward the drum back side 210 , so that the air flowing in the flow space 135 can form an upward flow toward the drum back side 210 in the process of passing through the outflow guide 136 .

[0289] Air flows in through the air supply portion 106 connected to the inlet extension portion 138, and the air flows in the flow space 135. Since an outflow guide portion 136 is provided in the air flow portion 130, the air flow toward the back side of the drum 210 can be fully ensured in the part where the air flow rate or flow pressure is insufficient, and the uniformity of the air supplied to the back side of the drum 210 can be effectively improved.

[0290] On the other hand, Fig.12 As shown, in one embodiment of the present invention, the outflow guide portion 136 may be configured to protrude forward from the flow recessed surface 132 , and may be formed by bending or curving the flow recessed surface 132 .

[0291] Therefore, the outflow guide 136 can be configured to extend from the flow concave surface 132, and can be configured to be connected to the flow inner peripheral surface 133 and / or the flow inner peripheral surface 133. That is, in the flow space 135, the outflow guide 136 is provided in a manner that has no separation between the flow inner peripheral surface 133, the flow outer peripheral surface 134, and the flow concave surface 132, so that the air passing through the outflow guide 136 can flow toward the front, that is, the drum back surface 210 as a whole.

[0292] In addition, in one embodiment of the present invention, the outflow guide portion 136 is formed by bending or curving the flow recessed surface 132, the flow inner peripheral surface 133 and the flow outer peripheral surface 134. Therefore, when forming the outflow guide portion 136, no additional process is required and the outflow guide portion 136 can be formed only by using the molding process of the rear plate 110, thereby effectively improving the manufacturing efficiency.

[0293] On the other hand, the outflow guide portion 136 may be configured to extend in the flow space 135 along the circumferential direction of the air flow portion 130, and may include a guide center portion and a guide inclined portion. The guide center portion includes a portion that protrudes most from the outflow guide portion 136, and the guide inclined portion extends from the guide center portion along the circumferential direction of the air flow portion 130.

[0294] The guide center portion may be a portion most protruding from the outflow guide portion 136 , which may include a surface parallel to the flow depression surface 132 or the rear reference surface or the drum back surface 210 not equipped with the outflow guide portion 136 .

[0295] The guide inclined portion may be configured such that the height thereof protruding from the flow recessed surface 132 decreases as it is farther from the guide central portion. That is, the guide inclined portion may extend obliquely from the guide central portion toward the flow recessed surface 132 .

[0296] The guide inclined portions may be located on both sides of the flow center portion based on the circumference of the air flow portion 130. That is, the guide inclined portions may extend from the guide center portion in one direction and another direction along the circumference of the air flow portion 130, respectively, and the guide center portion may be located between a pair of guide inclined portions.

[0297] In one embodiment of the present invention, since the outflow guide portion 136 is provided with a guiding inclined portion whose protruding height becomes smaller as it is farther away from the guiding central portion, it is possible to effectively suppress the situation in which the air passing through the outflow guide portion 136 collides with the outflow guide portion 136 to form turbulent flow, and effectively guide the forward flow of the air.

[0298] On the other hand, in an embodiment of the present invention, the outflow guide portion 136 may include a first outflow guide portion and a second outflow guide portion. Fig.12 An air flow portion 130 provided with a first outflow guide portion and a second outflow guide portion is shown.

[0299] The first outflow guide portion may be located on the opposite side of the air supply portion 106 or the inflow extension portion 138 based on the center of the annular air flow portion 130. That is, the first outflow guide portion may be located on the opposite side of the air supply portion 106 or the inflow extension portion 138 based on the drive mounting portion 120.

[0300] In one embodiment of the present invention, the air flow portion 130 or the flow space 135 is configured in a ring shape to allow the air supplied from the air supply portion 106 to flow, and as the air supply portion 106 is located on one side of the air flow portion 130, the air can flow separately in one direction or the other direction in the circumferential direction of the air flow portion 130.

[0301] In one embodiment of the present invention, the flow path extending from the inflow extension portion 138 in one direction may be defined as a first extension flow path, and the flow path extending in another direction may be defined as a second extension flow path.

[0302] That is, the air flow portion 130 may include a first extension flow path extending in one direction from the inlet extension portion 138 and a second extension flow path extending in another direction, and the first extension flow path and the second extension flow path may be connected to each other at opposite sides of the inlet extension portion 138. The first extension flow path and the second extension flow path may together form a ring-shaped air flow portion 130.

[0303] The air supplied from the air supply portion 106 located at the inlet extension portion 138 flows along the first extension flow path and the second extension flow path, and the air flowing in the first extension flow path and the second extension flow path meet each other on opposite sides of the inlet extension portion 138 with respect to the center of the air flowing portion 130 .

[0304] The air flowing in the first extension flow path and the second extension flow path may have opposite flow directions to each other, whereby the air having flow directions facing each other will collide with each other on opposite sides of the air supply portion 106 in the air flow portion 130, so stall and noise may occur, which is not conducive to forming air flow toward the back side 210 of the drum.

[0305] Therefore, in one embodiment of the present invention, by configuring a first outflow guide portion on the opposite side of the inflow extension portion 138 in the air flow portion 130, the air facing each other can flow from the first outflow guide portion toward the back side of the drum 210, and effectively prevent or suppress the situation of collision in directions facing each other.

[0306] Fig.12 The first outflow guide portion is shown as being located on the opposite side of the inflow extension portion 138 , and the position of the first outflow guide portion may be specifically determined according to the discharge direction of the air discharged from the fan duct portion 108 or the specific design of the air flow portion 130 .

[0307] The height of the first outflow guide portion protruding from the flow recessed surface 132 may be the same as the depth of the air flow portion 130. For example, the height of the first outflow guide portion protruding may be the same as the length of the flow inner peripheral surface 133 or the flow outer peripheral surface 134 protruding rearward from the rear protruding surface 149. That is, the height of the first outflow guide portion protruding may be the same as the depth of the flow space 135 of the air flow portion 130.

[0308] In one embodiment of the present invention, since the first outflow guide portion is configured to shield the entire cross-section of the flow space 135 when observed from the circumference of the flow space 135, it is possible to effectively prevent air with flow directions facing each other from colliding with each other in the first outflow guide portion, and effectively guide the forward flow of the air.

[0309] On the other hand, based on the circumferential direction of the air flow portion 130, the second outflow guide portion may be located between the first outflow guide portion and the inflow extension portion 138. That is, the second outflow guide portion may be provided on the first extension flow path and / or the second extension flow path.

[0310] The second outflow guide may be configured to guide the flow direction of the air so that the air flowing in the flow space 135 flows toward the drum back 210. The second outflow guide is provided at a portion of the air flow portion 130 where the air flow toward the drum 200 is relatively less or weaker, thereby improving the uniformity of the air outflow of the entire air flow portion 130.

[0311] The second outflow guide may be provided in plural in the first extension channel and in the second extension channel, or may be provided in any one of the first extension channel and the second extension channel. Fig.12 FIG. 4 shows a case where a second outflow guide is provided in the second extension flow path according to an embodiment of the present invention.

[0312] As described above, in an embodiment of the present invention, the air supply fan 1071 of the air supply unit 107 can be used to supply air from the fan duct unit 108 to the flow space 135 , and the air supply unit 107 can discharge air using the centrifugal force of the air supply fan 1071 .

[0313] In addition, in order to easily realize the discharge of air based on the air supply fan 1071, the air supply unit 107 can form an opening in the air supply fan housing in the tangential direction of the air supply fan 1071, and air can be discharged through the opening, and the fan duct unit 108 can be connected to the opening and extend along the tangential direction of the air supply fan 1071.

[0314] In this case, the air discharged from the fan duct portion 108 can have a flow direction parallel to the tangential direction of the air supply fan 1071. In particular, its discharge form can be concentrated in any direction of the tangential direction of the air supply fan 1071, and the farther away from any direction, the smaller its flow rate.

[0315] In addition, the discharge direction of the air of the fan duct portion 108 may be structurally defined, and the discharge direction may be determined to be closer to any one of the first extension flow path and the second extension flow path of the air flow portion 130 .

[0316] That is, in one embodiment of the present invention, the air discharged from the fan duct portion 108 to the flow space 135 may be concentrated in any direction due to various reasons, and therefore may not be able to provide the same air flow rate to the first extension flow path and the second extension flow path of each annular air flow portion 130.

[0317] Therefore, in one embodiment of the present invention, by configuring a second outflow guide portion in an extension flow path with a smaller air flow rate supplied from the air supply portion 106, the deviation of the air flow rate flowing forward from the first extension flow path and the second extension flow path can be reduced, and the uniformity of the air flowing out from the entire air flow portion 130 can be effectively improved.

[0318] exist Fig.12 According to one embodiment of the present invention, the following air flow portion 130 is shown, extending in one direction along the circumference of the air flow portion 130, the fan duct portion 108 provides more air flow to a first extension flow path extending roughly above the air supply portion 106, and a second outflow guide portion is provided in the second extension flow path to supplement the insufficient air flow and increase the amount of air flowing out toward the back side 210 of the drum.

[0319] However, one embodiment of the present invention is not necessarily limited to this, and a second outflow guide portion may also be provided in the first extension flow path. In addition, a plurality of second outflow guide portions may also be provided in the first extension flow path and the second extension flow path, and as required, the number of second outflow guide portions arranged in the second extension flow path may be greater than the number of second outflow guide portions arranged in the first extension flow path.

[0320] The specific positions and number of the second outflow guides may be determined in consideration of the flow analysis of the air flowing in the flow space 135 or the uniformity of the air flowing in through the drum back side 210 .

[0321] On the other hand, in an embodiment of the present invention, the air guide portion of the air flow portion 130 may include an inflow guide portion 137 , and the inflow guide portion 137 may be configured to guide the flow direction of the air discharged through the fan duct portion 108 .

[0322] For example, the inflow guide portion 137 may be configured to be convex toward the fan duct portion 108 or the inflow extension portion 138 inside the air flow portion 130 , and may be configured to equally divide the air discharged from the fan duct portion 108 and flow the air.

[0323] As described above, the air discharged from the fan duct portion 108 may be concentrated in one of the first extension channel and the second extension channel due to various reasons, and thus the air flow rate provided to the remaining one of the first extension channel and the second extension channel may be relatively insufficient.

[0324] For example, in one embodiment of the present invention, the air discharged from the fan duct portion 108 may be relatively concentrated in the first extension flow path, while less air may flow into the second extension flow path.

[0325] Therefore, in one embodiment of the present invention, an inlet guide portion 137 protruding toward the fan duct portion 108 is provided in the air flow portion 130, and a portion of the air toward the first extension flow path is guided toward the second extension flow path by the inlet guide portion 137, thereby effectively reducing the air flow deviation between the first extension flow path and the second extension flow path.

[0326] The inflow guide portion 137 may be located between the center of the air flow portion 130 and the fan duct portion 108. The inflow guide portion 137 may be provided in a manner of facing the fan duct portion 108 to guide the flow of air.

[0327] The inflow guide 137 may be disposed on the flow concave surface 132 or on the flow inner peripheral surface 133. Fig.12 FIG. 4 shows a situation in which an inflow guide portion 137 is provided on a portion of the flow inner peripheral surface 133 facing the fan duct portion 108 according to an embodiment of the present invention.

[0328] The inflow guide portion 137 may be manufactured separately and then combined with the flow inner peripheral surface 133 , or may be formed by a portion of the flow inner peripheral surface 133 protruding toward the fan duct portion 108 . Fig.12 1 and 2. The state in which the inflow guide portion 137 is formed by a portion of the flow inner peripheral surface 133 facing the fan duct portion 108 protruding so as to approach the fan duct portion 108 is shown.

[0329] In one embodiment of the present invention, the inflow guide portion 137 is formed by bending or curving a portion of the flow inner peripheral surface 133 in a manner that protrudes toward the fan duct portion 108, thereby being able to form the inflow guide portion 137 without performing any additional steps other than the rear plate 110 molding step, which is more advantageous in manufacturing.

[0330] Reference Fig.12 The inner peripheral surface 133 of the flow may extend in a substantially straight line in the region constituting the inflow guide 137, and may extend in a substantially circular shape in the remaining region. That is, the inner peripheral surface 133 of the flow may be configured to have a streamline shape that is sharper as it approaches the protruding end of the inflow guide 137, thereby the inflow guide 137 can effectively separate the air discharged from the fan duct 108 and minimize the occurrence of turbulent flow.

[0331] On the other hand, the first extension flow path and the second extension flow path can be defined between the flow inner peripheral surface 133 and the flow outer peripheral surface 134, a portion of the first extension flow path can be defined between the inlet guide portion 137 and the flow outer peripheral surface 134, and a portion of the second extension flow path can be defined between the inlet guide portion 137 and the flow outer peripheral surface 134.

[0332] That is, in each of the first extension flow path and the second extension flow path, the inflow region into which the air discharged from the fan duct portion 108 flows may be located between the inflow guide portion 137 and the flow outer peripheral surface 134 .

[0333] On the other hand, the inflow guide 137 can be configured to make the width of the inflow area of ​​the first extension flow path smaller than the width of the inflow area of ​​the second extension flow path. That is, under the action of the inflow guide 137, the width of the inflow area of ​​the first extension flow path can be smaller than the width of the inflow area of ​​the second extension flow path, and the width can be understood as the distance between the inflow guide 137 and the flow outer peripheral surface 134.

[0334] As for the inlet guide portion 137, the flow direction of at least a portion of the air discharged from the fan duct is guided toward the second extension flow path side through its protruding end, thereby improving the uniformity of the air flow rates of the first extension flow path and the second extension flow path. At the same time, by making the inlet area width of the first extension flow path smaller than the inlet area width of the second extension flow path, the air flow rate flowing into the first extension flow path is reduced and the air flow rate flowing into the second extension flow path is increased, thereby making the overall flow rate uniform.

[0335] However, the direction of the protrusion of the inflow guide portion 137 or the width adjustment of the first extension flow path and the second extension flow path may be determined differently according to the characteristics of the fan duct portion 108 and the air supply portion 107 .

[0336] on the other hand, Fig.15 The drum 200 is shown spaced apart in front of the rear plate 110, Fig.16 The condition inside the drum 200 is shown.

[0337] In an embodiment of the present invention, the drum 200 may be located in front of the rear plate 110 , and the air flowing out of the air flow portion 130 of the rear plate 110 passes through the drum back surface 210 and is provided to the inside of the drum 200 .

[0338] A drum opening is formed at the front side of the drum 200 . The drum 200 includes a front portion of the drum 200 surrounding the drum opening. The front portion of the drum 200 may be supported by the front plate 102 .

[0339] The drum peripheral surface 290 surrounding the inside of the drum 200 may be located behind the front portion of the drum 200. The drum peripheral surface 290 may be configured as a cylindrical shape extending along the circumferential direction of the drum 200, and the front end of the drum peripheral surface 290 may be combined with the front portion of the drum 200, or the front end may also be configured as one body with the front portion of the drum 200.

[0340] The internal space of the drum 200 surrounded by the drum peripheral surface 290 can accommodate clothes thrown in through the clothing opening 1021 of the front plate 102, and a clothes lifter 280 for lifting clothes when the drum 200 rotates can be provided on the inner side surface of the drum peripheral surface 290 facing the inside of the drum 200.

[0341] A drum back surface 210 may be disposed behind the drum peripheral surface 290 . The drum back surface 210 may be integrally formed with the drum peripheral surface 290 , or may be manufactured separately and then combined with the drum peripheral surface 290 .

[0342] The drum rear surface 210 may include an air passing portion 230 through which the air flowing out of the air flow portion 130 toward the inside of the drum 200 passes, and may include a rear center portion 220 connected to the driving portion 400 . Fig.15 The arrangement relationship in which the drum back side 210 is located in front of the air flow unit 130 is shown. Fig.16 The air passing portion 230 and the rear center portion 220 provided on the drum rear surface 210 are shown.

[0343] on the other hand, Fig.17 An exploded view of the drum back 210 separated from the drum 200 is shown, Fig.18 The back side 210 of the drum is shown as viewed from behind. Fig.19 The situation of the cross section of the drum back side 210 is shown.

[0344] Reference Figures 17 to 19 In one embodiment of the present invention, the back side 210 of the drum may include: a back side central portion 220, facing the drive mounting portion 120 and connected to the drive portion 400; and an air passing portion 230, surrounding the back side central portion 220, and the air provided from the air flow portion 130 passes through the air passing portion 230 and is supplied to the interior of the drum 200.

[0345] The rear center portion 220 may be located in front of the drive mounting portion 120 and connected to the drive portion 400. The drive shaft 430 of the drive portion 400 may penetrate the drive mounting portion 120 and extend to be connected to the rear center portion 220.

[0346] The rear center portion 220 may have a circular cross-sectional shape and be located at the center side of the drum rear surface 210. The driving shaft 430 connected to the rear center portion 220 may be connected to the rear center portion 220 at the center of the drum rear surface 210 so as to be located on the same line as the rotation axis of the drum 200.

[0347] The air passing portion 230 may be located in front of the air flowing portion 130, and the air provided from the air flowing portion 130 may pass through at least a portion of the air passing portion 230 and flow into the drum 200. The air passing portion 230 may be configured in a ring shape surrounding the rear center portion 220.

[0348] On the other hand, in one embodiment of the present invention, the air passing portion 230 may shield the open front surface 131 of the air flowing portion 130 , and the air provided from the air flowing portion 130 flows into the air passing portion 230 .

[0349] As described above, in one embodiment of the present invention, the front side 131 of the air flow portion 130 is open, and air can flow out from the entire open front side 131. In one embodiment of the present invention, the overall thickness of the air flow portion 130 is reduced by opening the front side 131 of the air flow portion 130, thereby facilitating expansion of the space inside the drum 200 toward the rear of the drum 200, and air can be supplied to the air passing portion 230 while minimizing the flow resistance of the air flowing from the air flow portion 130 to the air passing portion 230.

[0350] The air passing portion 230 can shield the open front 131 of the air flowing portion 130 in front. That is, the open front 131 of the air flowing portion 130 is directly shielded by the air passing portion 230, thereby realizing a structure that facilitates supply of air flowing out of the air flowing portion 130 to the air passing portion 230.

[0351] That is, in one embodiment of the present invention, since the front side 131 of the air flow section 130 is open and the air passing section 230 of the drum back side 210 is directly arranged on the open front side 131 of the air flow section 130, the flow resistance of the air supplied to the interior of the drum 200 can be minimized, and the flow loss and flow loss of the air flowing out of the air flow section 130 can be minimized.

[0352] On the other hand, in one embodiment of the present invention, as described above, the air flow portion 130 includes a flow recessed surface 132 shielding the rear of the flow space 135, and the air passing portion 230 may be configured to directly face the flow recessed surface 132 through the open front side 131 of the air flow portion 130. The flow recessed surface 132 and the air passing portion 230 may be arranged in parallel, and since the front side 131 of the air flow portion 130 is open, the air passing portion 230 and the flow recessed surface 132 may directly face each other.

[0353] On the other hand, in one embodiment of the present invention, the air passing portion 230 may protrude backward from the drum back side 210 and cover the front side 131 of the air flow portion 130. That is, the air passing portion 230 may protrude backward from the drum back side 210 and shield the open front side 131 of the air flow portion 130.

[0354] The drum back surface 210 may be configured such that its entirety protrudes rearward, or at least a portion including the air passing portion 230 protrudes rearward more than the remaining portion.

[0355] For example, Fig.19As shown, the air passage portion 230 can protrude rearward from the back side 210 of the drum so that it is located further rearward than the peripheral connection portion 240 connected to the drum peripheral surface 290 on the back side 210 of the drum or the back center portion 220 for connecting the driving portion 400, and a part of the internal space of the drum 200 can be formed inside the air passage portion 230.

[0356] In an embodiment of the present invention, the drum 200 is rotated by the driving part 400 , and in order to prevent structural interference with the rotation of the drum 200 , a predetermined spacing distance from the rear plate 110 may be ensured.

[0357] Furthermore, when a grille surface including a plurality of holes is provided on the front side 131 of the air flow section 130, a space equal to the thickness of the grille surface will be consumed between the drum 200, and in order to rotate the drum 200, the air passage section 230 needs to be separated from the grille surface by a specified interval toward the front.

[0358] However, in one embodiment of the present invention, the entire front side 131 of the air flow portion 130 can be open, so compared with the case where a grille surface is provided on the front side 131 of the air flow portion 130, the air passage portion 230 can protrude rearward from the drum back side 210 according to the thickness of the grille surface, and there is no need to ensure a separation distance from the grille surface, which is more conducive to protruding rearward.

[0359] The internal space of the drum 200 can be expanded according to the size of the air passage portion 230 protruding backward. Therefore, in one embodiment of the present invention, the air passage portion 230 protrudes backward from the back side 210 of the drum and covers the open front side 131 of the air flow portion 130, thereby effectively expanding the internal space of the drum 200.

[0360] In addition, as the front surface 131 of the air flow portion 130 is opened, structural interference between the drum back surface 210 and the rear plate 110 can be effectively prevented when the drum 200 rotates. Figures 17 to 19 2 shows an air passage portion 230 according to an embodiment of the present invention, at least a portion of which protrudes backward from the drum back surface 210 .

[0361] on the other hand, Fig. 20 The cross section of the drum back 210 and the rear plate 110 is shown as viewed from the side. Fig.21 Yes Fig. 20 The air flow portion 130 and the air passing portion 230 are enlarged and shown.

[0362] Reference Fig. 20 and Fig.21In one embodiment of the present invention, at least a portion of the air passing portion 230 may be inserted into the rear plate 110 to shield the open front side 131 of the air flow portion 130 .

[0363] At least a portion of the air passing portion 230 formed by protruding rearward from the drum back surface 210 may be inserted into the space defined inside the rear plate 110. For example, the rear plate 110 may have a space open to the front formed inside by the aforementioned rear protruding portion 140 or the air flow portion 130, and the air passing portion 230 may be inserted into the space from the front.

[0364] The air passing portion 230 may be configured in a shape corresponding to the air flowing portion 130 and inserted into the flow space 135 of the air flowing portion 130 , or inserted into the rear protruding portion 140 and shielding the front surface 131 of the air flowing portion 130 .

[0365] exist Fig. 20 and Fig.21 FIG. 4 shows a situation in which the air passing portion 230 is inserted into the rear protruding portion 140 and shields the open front surface 131 of the air flowing portion 130 in front according to an embodiment of the present invention.

[0366] The air passing portion 230 may be directly inserted into the air flowing portion 130 or may be arranged to be spaced forward from the open front surface 131 of the air flowing portion 130 by a predetermined distance and to shield the front surface 131 of the air flowing portion 130 from the front.

[0367] In one embodiment of the present invention, since the air passage portion 230 protrudes backward from the back side 210 of the drum, the space inside the drum 200 can be effectively expanded, and since the air passage portion 230 is inserted into the interior of the rear plate 110, for example, into the interior of the rear protrusion 140 or the air flow portion 130, the total length of the housing 100 in the front-to-back direction X can be minimized and the internal space of the housing 100 can be effectively used.

[0368] In addition, the air passing portion 230 for providing air to the interior of the drum 200 is inserted into the rear plate 110 and is arranged on the open front side 131 of the air flow portion 130, thereby minimizing the distance between the air passing portion 230 and the open front side 131 of the air flow portion 130, thereby effectively improving the air inflow performance of the air passing portion 230.

[0369] On the other hand, as described above, the drive mounting portion 120 of the rear plate 110 can protrude forward from the rear plate 110 so that it is located further forward than the air flow portion 130, and the air passing portion 230 inserted into the interior of the rear plate 110 can have a ring shape and surround at least a portion of the drive mounting portion 120.

[0370] In the drum back surface 210 , the air passing portion 230 may protrude further rearward than the back center portion 220 . That is, the back center portion 220 may be located further forward than the air passing portion 230 and may protrude forward from the drum back surface 210 .

[0371] The driver 400 may be coupled to the rear of the driver mounting portion 120, and the rear center portion 220 may be located in front of the driver mounting portion 120. The driver mounting portion 120 may protrude forward so that at least a portion thereof is inserted into the rear center portion 220 from behind.

[0372] Thus, in one embodiment of the present invention, the air passing portion 230 protruding rearward from the drum back surface 210 and inserted into the rear plate 110 may be configured to surround the periphery of the driver mounting portion 120 .

[0373] The back center portion 220 may include: a connection front portion 222 located in front of the driving portion 400; and a connection side portion 226 surrounding the interior of the back center portion 220, and the connection side portion 226 may be equivalent to the inner peripheral surface of the air passing portion 230. That is, the connection side portion 226 of the back center portion 220 may be configured to surround the periphery of the driving mounting portion 120.

[0374] On the other hand, in an embodiment of the present invention, the air passing portion 230 may protrude further rearward than the rear center portion 220 and shield the front surface 131 of the air flowing portion 130 .

[0375] As described above, the air passing portion 230 may be formed to protrude rearward from the drum back 210, and may protrude further rearward than the back center portion 220. In addition, as described later, the back center portion 220 may be formed to protrude forward from the drum back 210, so that the back center portion 220 may be located further forward than the air passing portion 230.

[0376] On the other hand, in one embodiment of the present invention, the drum 200 may include a drum peripheral surface 290 connected to the drum back side 210 in front of the drum back side 210, and a peripheral connecting portion 240 connected to the drum peripheral surface 290 may be provided at the edge of the drum back side 210, and the air passing portion 230 may protrude further rearward than the peripheral connecting portion 240 and shield the front side 131 of the air flow portion 130.

[0377] Reference Fig. 20 and Fig.21 The edge of the drum back surface 210 may be provided with a peripheral connection portion 240 combined with the drum peripheral surface 290. The peripheral connection portion 240 may be combined with the drum peripheral surface 290 in various ways.

[0378] For example, the peripheral connection portion 240 can be connected to the rear end of the drum peripheral surface 290 by using a connecting member, such as Fig. 20 and Fig.21 As shown, the peripheral connection portion 240 may be mechanically coupled to the drum peripheral surface 290 as it is wound together with the drum peripheral surface 290 .

[0379] The air passing portion 230 may protrude rearward from the drum back surface 210 so as to be located further rearward than the peripheral connection portion 240. The air passing portion 230 may include a passing outer peripheral surface 238 extending rearward from the peripheral connection portion 240 and surrounding the periphery of the air passing portion 230, and may include an air passing surface 239 facing the open front surface 131 of the air flow portion 130 on the rear side of the air passing portion 230.

[0380] The outer peripheral surface 238 may correspond to the outer peripheral surface of the air passage portion 230. The air passage portion 230 may be configured in a ring shape surrounding the rear center portion 220, and the outer peripheral surface 238 may be configured to extend rearward from the drum peripheral surface 290 to surround the inner space of the air passage portion 230.

[0381] The outer periphery of the air passing surface 239 may be connected to the rear end of the outer peripheral surface 238 and may be formed in a ring shape with the rear center portion 220 located at the center thereof. The air passing surface 239 may include a plurality of vents 234 for passing air.

[0382] The air passing surface 239 may be arranged parallel to the flow recessed surface 132 and configured to have a shape corresponding to the flow recessed surface 132. The air passing surface 239 may be configured to be annular and located in front of the open front surface 131 of the air flow portion 130 and shield the open front surface 131 in front.

[0383] The inner peripheral surface of the air passing portion 230 may correspond to the connecting side surface portion 226 of the rear center portion 220. That is, the inner peripheral edge of the air passing surface 239 may be connected to the connecting side surface portion 226 of the rear center portion 220, and a space surrounded by the outer peripheral surface 238, the air passing surface 239 and the connecting side surface portion 226 and open to the inside of the drum 200 may be formed inside the air passing portion 230.

[0384] In the drum rear surface 210 , the air passing portion 230 may protrude further rearward than the peripheral connection portion 240 and shield the front surface 131 of the air flow portion 130 , and at least a portion of the air passing portion 230 may be inserted into the rear plate 110 .

[0385] In one embodiment of the present invention, the air passing portion 230 protrudes further rearward than the peripheral connection portion 240 , thereby effectively expanding the internal space of the drum 200 and effectively utilizing the air passing portion 230 to shield the open front side 131 of the air flow portion 130 .

[0386] On the other hand, in an embodiment of the present invention, the air passage portion 230 may be bent or curved from the peripheral connection portion 240 and protrude rearward, and a space is formed inside.

[0387] The air passing portion 230 and the back center portion 220 may be formed by bending or curving a portion of the drum back 210 to protrude forward or backward. Thus, the air passing portion 230 may have a space communicating with the inside of the drum 200, and the back center portion 220 may have a space open to the rear.

[0388] In one embodiment of the present invention, the air passage portion 230 and the back center portion 220 are formed by bending or curving a portion of the drum back surface 210, so that the air passage portion 230 and the back center portion 220 can be formed simultaneously in the molding process of the drum back surface 210, which is advantageous in manufacturing. In addition, since there is no joint portion between the air passage portion 230 and the back center portion 220 in the drum back surface 210, leakage of air supplied to the inside of the drum 200 can be prevented.

[0389] On the other hand, in an embodiment of the present invention, the rear plate 110 may include a rear protruding portion 140 having a space formed therein and protruding rearward, and the air flow portion 130 is configured to protrude rearward from the rear protruding portion 140 .

[0390] In addition, the driver mounting portion 120 may be configured to protrude forward from the rear protruding portion 140 and be surrounded by the air passing portion 230 .

[0391] That is, in one embodiment of the present invention, the air passing portion 230 may protrude rearward from the drum rear surface 210 and be inserted into the rear protruding portion 140 , and shield the front surface 131 of the air flowing portion 130 .

[0392] Specifically, as mentioned above, in one embodiment of the present invention, the rear plate 110 may include a rear protruding portion 140 , and the rear protruding portion 140 may form an inner space open to the front.

[0393] At least a portion of the air passage portion 230 protruding rearward from the drum back side 210 is inserted into the rear protrusion 140, and the open front side 131 of the air flow portion 130 protruding rearward from the rear protrusion surface 149 of the rear protrusion 140 can be shielded by the air passage surface 239 of the air passage portion 230 inserted into the rear protrusion 140.

[0394] On the other hand, in an embodiment of the present invention, the peripheral connection portion 240 may be located further forward than the air passing portion 230 , and further outward than the rear protruding portion 140 based on the radial direction of the drum 200 .

[0395] In the air passage portion 230, since the peripheral connection portion 240 extends rearward from the peripheral surface 238, the peripheral connection portion 240 may be located further forward than the air passage portion 230. For example, the peripheral connection portion 240 may be connected to the front end of the peripheral surface 238.

[0396] In one embodiment of the present invention, the peripheral connection portion 240 may be located further forward than the rear outer peripheral surface 148 of the rear protruding portion 140. That is, in the drum back surface 210, the peripheral connection portion 240 may be located in front of the rear protruding portion 140, and the passing outer peripheral surface 238 of the air passing portion 230 extending rearward from the peripheral connection portion 240 is located inside the rear protruding portion 140.

[0397] In addition, based on the radial direction of the drum 200 , the peripheral connection portion 240 may be located outside the rear protruding portion 140 . That is, the diameter of the peripheral connection portion 240 may be greater than the diameter of the rear outer peripheral surface 148 of the rear protruding portion 140 .

[0398] As the total length or diameter along the front-to-back direction X increases, the internal space of the drum 200 becomes larger and the laundry storage capacity can be increased. In one embodiment of the present invention, a rear protruding portion 140 protruding rearward is formed on the rear plate 110, and the air passing portion 230 of the drum back surface 210 protrudes rearward and is inserted into the rear protruding portion 140, thereby effectively increasing the internal space of the drum 200.

[0399] In addition, if the peripheral connection portion 240 connected to the drum peripheral surface 290 in the drum back side 210 is inserted into the rear protrusion 140, the entire cross-sectional area of ​​the drum 200 will be smaller than the cross-sectional area formed by the rear outer peripheral surface 148 of the rear protrusion 140, which may be unfavorable for increasing the internal space of the drum 200.

[0400] Therefore, in one embodiment of the present invention, the diameter of the peripheral connection portion 240 of the back side 210 of the drum is larger than the diameter of the rear outer peripheral surface 148, thereby not only increasing the internal capacity of the drum 200, but also increasing the internal capacity of the drum 200 by forming an air passage portion 230 that protrudes rearward from the back side 210 of the drum.

[0401] On the other hand, in one embodiment of the present invention, the passing outer peripheral surface 238 of the air passing portion 230 may be inserted into the interior of the rear protruding portion 140 and face the rear outer peripheral surface 148 on the inner side.

[0402] The through outer peripheral surface 238 may be provided in parallel with the rear outer peripheral surface 148 , and the through outer peripheral surface 238 of the air passing portion 230 inserted into the rear protruding portion 140 may be configured to be surrounded by the rear outer peripheral surface 148 .

[0403] The through outer peripheral surface 238 rotates together with the drum 200 as a part of the drum back 210 , and the rear outer peripheral surface 148 can be configured to be separated from the through outer peripheral surface 238 by a specified distance radially outward from the drum 200 to prevent physical interference with the through outer peripheral surface 238 .

[0404] In addition, the rear protrusion 140 may include: a rear peripheral area, in which the rear outer peripheral surface 148 maintains a predetermined distance and extends from the through outer peripheral surface 238 of the back side of the drum 210; and an expanded peripheral area, in which the separation distance from the through outer peripheral surface 238 is increased compared to the separation distance from the rear peripheral area.

[0405] The drum 200 and various structural elements are arranged inside the housing 100, so the internal space of the housing 100 may not be sufficient to arrange the various structural elements. In one embodiment of the present invention, the rear protruding portion 140 may include: a rear peripheral area for inserting the air passing portion 230 from the front and making the air flow portion 130 and the inflow extension portion 138 protrude to the rear; and an expanded peripheral area for ensuring a space for various devices other than the air passing portion 230 to be built in.

[0406] Fig.13 The rear protrusion 140 is shown, and the rear peripheral surface 148 extends outwardly from the flow peripheral surface 134 of the air flow portion 130 at a first distance, and the expanded peripheral area extends outwardly from the flow peripheral surface 134 at a distance greater than the first distance.

[0407] Although Fig.13 The situation in which the expanded peripheral area is provided at the upper and lower parts of one side of the rear protrusion 140 in the lateral direction Y is shown, but the specific position or shape of the expanded peripheral area may be different as needed.

[0408] Fig.13 An expanded peripheral region including an extension hole penetrated by an extension member drawn from the interior of the housing 100 according to an embodiment of the present invention is shown, wherein the extension member may be a drain pipe extending from the water collecting portion 1065 or the like.

[0409] In one embodiment of the present invention, the inner space of the housing 100 can be effectively expanded by forming the rear protruding portion 140 , thereby effectively increasing the capacity of the drum 200 and ensuring space for disposing various structural elements.

[0410] On the other hand, in one embodiment of the present invention, the air passing surface 239 of the air passing portion 230 can be connected to the passing outer peripheral surface 238 on the rear side of the air passing portion 230 and inserted into the interior of the rear protrusion 140. The air passing surface 239 can be located in front of the rear protrusion surface 149 and shield the open front side 131 of the air flow portion 130.

[0411] As described above, the air passing surface 239 can be arranged parallel to the open front surface 131 or the flow recessed surface 132 of the air flow portion 130, and the air passing portion 230 can be inserted into the interior of the rear protrusion 140 so that the air passing surface 239 is configured on the open front surface 131 of the air flow portion 130.

[0412] Reference Fig. 20 and Fig.21 The air passing portion 230 can be inserted into the interior of the rear protrusion 140 so that the rear outer peripheral surface 148 of the rear protrusion 140 surrounds the outer peripheral surface 238 on the outside, and the air passing surface 239 is located in front of the air flow portion 130, so that the air flowing out from the open front side 131 of the air flow portion 130 directly passes through the air passing surface 239 and flows into the interior of the drum 200.

[0413] The air passing surface 239 rotates together with the rotation of the drum 200 as a part of the drum back surface 210, so the air passing surface 239 can be spaced a predetermined distance in front of the air flow portion 130. In one embodiment of the present invention, the air passing surface 239 is inserted into the rear protrusion 140 and is located at a position that is maximally close to the open front surface 131 of the air flow portion 130, thereby minimizing the flow loss and flow loss of the air.

[0414] The aforementioned rear seal 300, i.e., an inner seal 310 extending along the inner peripheral edge of the air flow portion 130 and an outer seal 320 extending along the outer peripheral edge of the air flow portion 130, is arranged between the rear protruding surface 149 of the rear protruding portion 140 and the air passing surface 239, thereby effectively preventing air from leaking to the outside from between the rear protruding surface 149 and the air passing surface 239.

[0415] In one embodiment of the present invention, the air flow portion 130 includes a flow concave surface 132 that is concave toward the rear from the rear convex surface 149, and the flow space 135 may be located between the flow concave surface 132 and the air passing surface 239. That is, in one embodiment of the present invention, the flow space 135 may be formed to directly face the air passing surface 239 toward the front.

[0416] on the other hand, Fig. 22 FIG. 2 shows a vent 232 provided in the air passage portion 230 according to an embodiment of the present invention. Fig. 22 The air passing portion 230 may further include a vent portion 232 . The vent portion 232 may include a plurality of vent holes 234 for allowing air to pass therethrough, and may protrude from the air passing surface 239 toward the flow space 135 .

[0417] The entire air passing surface 239 may correspond to the vent 232, or the vent 232 may be formed in a partial area. That is, the air passing surface 239 may be configured to allow air to pass through the entire air passing surface 239, or as shown in FIG. Fig. 22 As shown, the vent portion 232 may be configured to allow air to pass only in a portion of the area corresponding to the vent portion 232. The vent portion 232 may be configured to allow air flowing out of the air flow portion 130 to flow into the drum 200 through the plurality of vent holes 234.

[0418] On the other hand, in one embodiment of the present invention, the vent 232 may be configured to protrude from the air passing portion 230 toward the flow space 135. That is, the vent 232 may protrude further rearward than the air passing surface 239 and may be inserted into the flow space 135 of the air flowing portion 130 or located in front of the open front surface 131.

[0419] As described above, the air passing surface 239 rotates as a part of the drum back surface 210 , and therefore needs to be separated from the rear protruding surface 149 by a predetermined distance to prevent contact with the rear protruding surface 149 of the rear protruding portion 140 .

[0420] On the other hand, the closer the ventilation portion 232 for passing air in the air passing portion 230 is to the flow space 135 of the air flowing portion 130, the more conducive it is to minimizing the flow loss and flow loss of the air. Therefore, in one embodiment of the present invention, the ventilation portion 232 protrudes rearward from the air passing surface 239 so that its distance from the air flowing portion 130 can be minimized.

[0421] In one embodiment of the present invention, the air passing surface 239 may have a wider area than the open front surface 131 of the air flowing portion 130. That is, based on the radial direction of the drum 200, the width of the air passing surface 239 may be set wider than the width of the air flowing portion 130.

[0422] Thus, it is possible to realize a structure that prevents air leakage from the air passing portion 230 to the outside, such as ensuring a space between the air passing surface 239 and the rear protruding surface 149 in which the rear seal 300 can be disposed.

[0423] On the other hand, the vent 232 is formed by additionally protruding rearward from the air passing surface 239 which has restrictions on the rear protrusion in relation to the rear protruding surface 149, thereby minimizing the distance between the vent 232 through which air passes and the open front face 131 of the air flow portion 130.

[0424] The vent 232 may be located in front of the open front surface 131 of the air flow portion 130 , or located on the open front surface 131 , or at least a portion thereof may pass through the open front surface 131 and be located in the flow space 135 .

[0425] In one embodiment of the present invention, the vent 232 through which air passes directly in the air passing surface 239 protrudes rearward from the air passing surface 239 , thereby minimizing the distance between the vent 232 and the air flow portion 130 and allowing the air in the air flow portion 130 to flow effectively into the vent 232 .

[0426] In an embodiment of the present invention, a plurality of vents 232 may be provided, and the vents 232 may be spaced apart from each other along the circumferential direction of the air passing surface 239 of the air passing portion 230 .

[0427] As described above, the vent portion 232 includes a plurality of vent holes 234 , and therefore, in the air passing surface 239 , the rigidity of the vent portion 232 is lower than the rigidity of the remaining portion except for the vent portion 232 .

[0428] In one embodiment of the present invention, the vent holes 234 are not formed on the entire air passing surface 239, but a plurality of vent portions 232 are provided in the area belonging to the vent holes 234 and on the open front side 131 of the air flow portion 130, and the plurality of vent portions 232 are arranged to be separated from each other, thereby ensuring the overall rigidity of the air passing surface 239 including the vent portions 232.

[0429] The vent 232 may be located between the flow inner circumferential surface 133 and the flow outer circumferential surface 134 of the air flow portion 130. That is, based on the radial direction of the drum 200, the width of the vent 232 is smaller than the air flow portion 130 or the open front surface 131 of the air flow portion 130, so that the vent 232 may be located in front of the open front surface 131 of the air flow portion 130.

[0430] On the other hand, in one embodiment of the present invention, the air passage portion 230 may further include a reinforcing rib 236, which protrudes further forward than the vent portion 232 and extends in a manner of surrounding the vent portion 232. The air passage portion 230 may be provided on the aforementioned air passage surface 239 and configured to surround at least a portion of the periphery of the vent portion 232.

[0431] The vent holes 234 are excluded from the reinforcing ribs 236, so that the rigidity can be increased in relation to the vent portion 232. On the other hand, the air passage portion 230 may be a region connecting the back center portion 220 and the peripheral connection portion 240 in the drum back surface 210, where the drum 200 and the drive shaft 430 are connected to each other, and the drum peripheral surface 290 having a relatively high load is coupled to the peripheral connection portion 240.

[0432] The rigidity of the air passage surface 239 formed with a plurality of ventilation holes 234 will be lower than the rigidity of the remaining parts in the drum back side 210. Therefore, in one embodiment of the present invention, the air passage surface 239 is formed with reinforcing ribs 236 in the area other than the ventilation portion 232, thereby improving the rigidity of the entire air passage surface 239 and firmly connecting the peripheral connection portion 240 and the back central portion 220.

[0433] The reinforcing rib 236 may have a shape that is relatively convex toward the front in relation to the vent portion 232 .

[0434] For example, the reinforcing rib 236 may be shaped to protrude forwardly relative to the vent 232 protruding rearwardly from the air passing surface 239 , or may be shaped to protrude forwardly from the air passing surface 239 and further protrude forwardly than the vent 232 .

[0435] On the other hand, in one embodiment of the present invention, the reinforcing ribs 236 may include at least one of the back reinforcing ribs 2362, the inner reinforcing ribs 2364, and the outer reinforcing ribs 2366. Fig. 22 2 shows the back reinforcing ribs 2362 , the inner reinforcing ribs 2364 and the outer reinforcing ribs 2366 disposed on the back side 210 of the drum according to an embodiment of the present invention.

[0436] The back reinforcement rib 2362 may be disposed between the plurality of vents 232 and protrude forwardly beyond the vents 232. As described above, the plurality of vents 232 may be spaced apart from each other along the circumference of the drum 200 and located in front of the open front surface 131 of the air flow portion 130.

[0437] The back reinforcing rib 2362 may extend in the radial direction of the drum 200 and be disposed between each vent 232. The specific shape of the back reinforcing rib 2362 may differ according to the shape of the vent 232.

[0438] Fig. 22 It shows a vent 232 that is recessed rearward from the air passing surface 239 when the back side 210 of the drum is observed from the front, and it shows a situation in which a back reinforcing rib 2362 that protrudes forward in relative relationship with the vent 232 extends radially along the drum 200 and is arranged between multiple vents 232.

[0439] On the other hand, the inner reinforcing rib 2364 may be located between the vent portion 232 and the rear center portion 220 , protrude further forward than the vent portion 232 , and extend along the circumferential direction of the drum 200 .

[0440] The inner reinforcing rib 2364 may be configured to extend along the inner periphery of the air passing surface 239, and may be formed in a ring shape and surround the back central portion 220. As described above, the convex inner peripheral surface of the air passing portion 230 may correspond to the connecting side surface portion 226 of the back central portion 220, and thus the inner reinforcing rib 2364 may be configured to be connected to the connecting side surface portion 226.

[0441] The inner reinforcing rib 2364 may be connected to a portion of the periphery of the vent 232 that faces the rear center portion 220. The height of the inner reinforcing rib 2364 protruding from the vent 232 may be the same as that of the rear reinforcing rib 2362 described above.

[0442] The inner reinforcing rib 2364 may be configured to be connected to the back reinforcing rib 2362 and surround the vent 232 together therewith. The shape of the inner reinforcing rib 2364 extending may correspond to the cross-sectional shape of the back central portion 220. Fig. 22The inner reinforcing rib 2364 is shown to be configured in a ring shape corresponding to the periphery of the circle so that the inner reinforcing rib 2364 corresponds to the back center portion 220 having a circular cross-sectional shape.

[0443] On the other hand, the outer reinforcing rib 2366 may be located between the vent portion 232 and the peripheral connection portion 240 , protrude further forward than the vent portion 232 , and extend along the circumferential direction of the drum 200 .

[0444] The outer rib 2366 may be located between the peripheral connection portion 240 and the vent 232 in the air passage portion 230. The outer rib 2366 may be located between the outer peripheral surface 238 of the air passage portion 230 and the vent 232, and may be configured in an annular shape and extend along the outer peripheral edge of the air passage surface 239.

[0445] The extended shape of the outer reinforcing rib 2366 may correspond to the shape of the outer peripheral edge of the air passing surface 239 . Fig. 22 The air passage surface 239 having a circular periphery is shown, and correspondingly, the outer reinforcing rib 2366 having a ring-shaped structure extending along the circular periphery is shown.

[0446] The reinforcing ribs 236 may be configured such that the back reinforcing ribs 2362, the outer reinforcing ribs 2366, and the inner reinforcing ribs 2364 are connected together to surround the vent 232. That is, the inner reinforcing ribs 2364 configured in a ring shape and the outer reinforcing ribs 2366 configured in a ring shape having a larger diameter than the inner reinforcing ribs 2364 may be connected to each other by the back reinforcing ribs 2362.

[0447] Based on the radial direction of the drum 200 , the vent 232 may be located between the inner reinforcing rib 2364 and the outer reinforcing rib 2366 , and based on the circumferential direction of the drum 200 , the vent 232 may be located between a pair of back reinforcing ribs 2362 .

[0448] In one embodiment of the present invention, by including at least one of the back reinforcing ribs 2362, the inner reinforcing ribs 2364 and the outer reinforcing ribs 2366, the rigidity of the air passage surface 239 forming the ventilation portion 232 can be effectively ensured, thereby effectively preventing the air passage surface 239 from being deformed when the drum 200 rotates, and stably connecting the back central portion 220 and the peripheral connection portion 240.

[0449] On the other hand, as described above, one embodiment of the present invention may include a rear seal 300. The rear seal 300 is located between the air passing portion 230 and the air flowing portion 130, surrounds the air flowing portion 130 and can prevent the air provided from the air flowing portion 130 from leaking to the outside of the air passing portion 230.

[0450] That is, the rear seal 300 may be arranged to be located between the air passing surface 239 and the rear convex surface 149 and to suppress leakage of the air provided from the air flowing portion 130 to the outside of the air passing surface 239 .

[0451] As described above, the air passing portion 230 may be inserted into the rear protruding portion 140, and the air passing surface 239 may be in front of the rear protruding surface 149 and face the rear protruding surface 149. However, the air passing surface 239 may be separated from the rear protruding surface 149 by a predetermined distance so that the drum 200 can be easily rotated, and the rear seal 300 may be provided on the rear protruding surface 149 or the air passing surface 239, and is configured to shield the space between the air passing surface 239 and the rear protruding surface 149.

[0452] That is, the flow space 135 of the air flow portion 130 can be closed from the front by the air passing surface 239 and the rear seal 300. The rear seal 300 can prevent the air flowing out of the flow space 135 to the outside of the air passing surface 239 from leaking, and allows the air to flow into the drum 200 through the air passing surface 239.

[0453] In addition, the rear seal 300 may be disposed on the rear convex surface 149 , or at least a portion thereof may be located within the flow space 135 . Figure 7 The rear seal 300 is shown disposed on the rear convex surface 149 and surrounds the inner and outer peripheries of the air flow portion 130 , respectively, according to an embodiment of the present invention.

[0454] On the other hand, the rear seal 300 may include an outer seal 320 and an inner seal 310, wherein the outer seal 320 may be configured to extend along the outer periphery of the air flow portion 130 and surround the air flow portion 130 or the flow space 135, and the inner seal 310 may be configured to extend along the inner periphery of the air flow portion 130 and surround the drive mounting portion 120 inwardly and surround the air flow portion 130 outwardly.

[0455] The outer seal 320 and the inner seal 310 may include a seal body portion disposed on the front side of the air flow portion 130 or the rear protruding surface 149 , and a drum 200 contact portion disposed on the seal body portion and contacting the air passing surface 239 .

[0456] In one embodiment of the present invention, the air passage portion 230 of the back side 210 of the drum is inserted into the rear protrusion 140 of the rear plate 110, and the air passage surface 239 of the air passage portion 230 shields the open front side 131 of the air flow portion 130 in front, and the air passage surface 239 and the rear protrusion surface 149 are sealed by the inner seal 310 and the outer seal 320, so that the air of the air flow portion 130 can completely pass through the air passage surface 239 and flow into the interior of the drum 200.

[0457] on the other hand, Fig.23 The figure shows the situation that the back center portion 220 of the drum back 210, the drive mounting portion 120 of the rear plate 110 and the drive portion 400 are separated. Fig.24 The cross section of the rear center portion 220 , the drive mounting portion 120 , and the drive portion 400 is shown.

[0458] Reference Fig.23 and Fig.24 In one embodiment of the present invention, the drum back side 210 includes a back side central portion 220 , which may be located in front of the driving portion 400 and configured to suppress heat transfer between the inside of the drum 200 and the driving portion 400 .

[0459] Specifically, in the rear plate 110 , the driving unit 400 may be combined behind the aforementioned driving installation unit 120 , and the rear central portion 220 is located in front of the driving installation unit 120 and connected to the driving shaft 430 of the driving unit 400 .

[0460] As mentioned above, in one embodiment of the present invention, the driving unit 400 may generate heat during operation. As the heat of the driving unit 400 increases, heat loss may occur or the operating efficiency of the driving unit 400 may be hindered. Therefore, heat dissipation on the driving unit 400 side is particularly important.

[0461] On the other hand, in the laundry treating apparatus 10 according to an embodiment of the present invention, in order to dry the laundry contained in the drum 200 , the air dehumidified and heated by the air supply part 106 may pass through the air flow part 130 and flow into the drum 200 .

[0462] That is, the inside of the drum 200 supplied with air from the air flow unit 130 will form a high temperature to dry the clothes, and when the heat inside the drum 200 is transferred to the driving unit 400, heat loss will occur on the driving unit 400 side or the operating efficiency will be reduced. Therefore, it is particularly important to block the heat transfer between the driving unit 400 and the inside of the drum 200.

[0463] In one embodiment of the present invention, the back center portion 220 is configured to shield the front of the drive mounting portion 120 and the drive portion 400 , thereby preventing heat from being transferred from the inside of the drum 200 to the drive mounting portion 120 and the drive portion 400 .

[0464] Specifically, in one embodiment of the present invention, the back central portion 220 may be configured to overlap the entire driving portion 400 in the front. In addition, the back central portion 220 may have a circular cross-sectional shape, have a diameter greater than the diameter of the driving portion 400, and be configured in front of the driving portion 400.

[0465] The back center portion 220 may correspond to a portion to which the drive shaft 430 of the drive unit 400 is connected from the rear. The heat inside the drum 200 may be transferred to the drive mounting portion 120 and the drive unit 400 behind the back center portion 220, and such heat transfer may be disadvantageous in the operation of the drive unit 400.

[0466] In addition, in one embodiment of the present invention, as described above, high-temperature air flows in the air flow portion 130 of the rear plate 110, and the air flow portion 130 is configured to surround the periphery of the drive mounting portion 120 and the drive portion 400, so it is particularly important to reduce the heat of the drive mounting portion 120 and the drive portion 400.

[0467] In one embodiment of the present invention, when viewed from the front, the back center portion 220 may be configured to overlap the entire driving unit 400. Thus, the back center portion 220 can effectively prevent the heat inside the drum 200 from being transferred from the drum 200 to the driving unit 400.

[0468] On the other hand, in one embodiment of the present invention, the drive mounting portion 120 may shield the entire drive portion 400 from the front and, together with the rear center portion 220 , suppress heat transfer between the inside of the drum 200 and the drive portion 400 .

[0469] As described above, the driver installation portion 120 may protrude forward from the rear reference surface of the rear plate 110 or the rear protruding surface 149 of the rear protruding portion 140 , and the driver portion 400 is coupled to the rear of the driver installation portion 120 .

[0470] When viewed from the front, the driver mounting portion 120 may be configured to overlap the entire driver 400, thereby shielding the front of the driver 400. The driver mounting portion 120 may have a wider cross-sectional area than the driver 400 and shield the front of the driver 400. The driver mounting portion 120 may be configured such that the diameter of the cross section when viewed from the front is greater than the diameter of the driver 400, and is disposed in front of the driver 400.

[0471] In one embodiment of the present invention, the drive mounting portion 120 is located in front of the drive portion 400, and the back central portion 220 is located in front of the drive mounting portion 120. Therefore, the drive mounting portion 120 and the back central portion 220 can block or inhibit heat from being transferred from the inside of the drum 200 to the drive portion 400 in front of the drive portion 400, and can effectively reduce the heat on the side of the drive portion 400.

[0472] On the other hand, in one embodiment of the present invention, the back center portion 220 may protrude forward from the drum back side 210 and form a space therein. The back center portion 220 may protrude forward from the air passing surface 239 of the air passing portion 230 and may be located at the same position as the peripheral connection portion 240 of the drum back side 210 or at a position further back than the peripheral connection portion 240.

[0473] As mentioned above, in one embodiment of the present invention, the driving unit 400 can be arranged on the rear plate 110 so that the driving shaft 430 of the driving unit 400 and the rotation axis of the drum 200 are located on the same line. Since the driving unit 400 and the drum 200 are not connected using a belt or the like, it is beneficial to change the rotation speed and rotation direction of the driving shaft 430 and the drum 200, and it is beneficial to apply various rotation modes of the drum 200.

[0474] However, in a clothing processing device 10 such as a dryer that can dry clothes, it is important to ensure sufficient clothing storage capacity by increasing the internal space of the drum 200. Therefore, the drive unit 400 is located at the rear of the drum 200 and fully ensuring the capacity of the drum 200 will increase the length of the entire clothing processing device 10 in the front-to-back direction X, which may be disadvantageous in terms of space utilization.

[0475] However, in one embodiment of the present invention, while the driving unit 400 is arranged behind the driving installation unit 120 of the rear plate 110, the back center portion 220 of the drum back side 210 protrudes forward from the drum back side 210, so that at least a portion of the driving installation unit 120 and the driving unit 400 can be inserted into the interior from the rear. That is, at least a portion of the driving installation unit 120 and the driving unit 400, including each front end, can be inserted into the interior of the back center portion 220.

[0476] Thus, the length of the driving part 400 protruding rearward from the drum back surface 210 can be effectively reduced, and the air passing part 230 protrudes rearward from the drum back surface 210 , thereby effectively increasing the internal space of the drum 200 .

[0477] On the other hand, in one embodiment of the present invention, the rear central portion 220 may be separated from the driver mounting portion 120 inside. That is, the driver mounting portion 120 located inside the rear central portion 220 may be configured not to directly contact the rear central portion 220.

[0478] The rear center portion 220 may protrude forward from the drum rear surface 210 and form a space open to the rear therein, and may include an inner side surface facing and surrounding the space, and the inner side surface may be spaced apart from the driving mounting portion 120 .

[0479] The back central portion 220 may include: a connecting side portion 226, extending forward from the back side 210 of the drum, for example from the air passing surface 239, to form the periphery of the back central portion 220; and a connecting front portion 222, connected to the front end of the connecting side portion 226, to shield the front of the drive mounting portion 120.

[0480] The connecting side portion 226 may be located in front of the mounting side portion 124 of the driver mounting portion 120, and the connecting front portion 222 may be located in front of the mounting front portion 122 of the driver mounting portion 120. The rear center portion 220 may be configured to have a shape corresponding to the driver mounting portion 120 and be located in front of the driver mounting portion 120.

[0481] In the back center portion 220, the connection side portion 226 and the connection front portion 222 may be separated from the driver installation portion 120. In one embodiment of the present invention, since the back center portion 220 and the driver installation portion 120 are not in direct contact, heat can be prevented from being transferred from the back center portion 220 to the driver installation portion 120 and the driver 400 through heat conduction.

[0482] In addition, as a separation space is formed between the back central portion 220 and the drive mounting portion 120, during the process of heat being transferred to the drive mounting portion 120 via the back central portion 220, the separation space has a heat insulating effect, thereby effectively suppressing heat from being transferred to the drive mounting portion 120 and the drive portion 400.

[0483] Although the present invention has been illustrated and described with respect to specific embodiments, it is obvious to those skilled in the art that the present invention can be modified and altered in various ways without departing from the technical concept of the present invention as described in the claims.

Claims

1. A clothes processing device, characterized in that: in, include: A box body, wherein a rear plate is arranged at the rear side of the box body; a drum rotatably disposed inside the housing, accommodating clothes through an opening formed at the front side, and having a drum back side facing the rear plate disposed at the rear side of the drum; and A driving unit, located behind the rear plate, provides a rotational force to the drum. The rear plate includes a drive mounting portion and an air flow portion, the drive portion is combined with the drive mounting portion, and the air flow portion surrounds the drive mounting portion. The back side of the drum includes a back side central portion and an air passage portion, wherein the back side central portion faces the drive mounting portion, and the air passage portion surrounds the back side central portion. The air flow portion of the rear plate includes a flow space, in which the air provided from the opening flows, and the front side of the flow space toward the air passing portion on the back side of the drum is open for insertion of at least a portion of the air passing portion, and the air flows into the drum via the air passing portion through the open front side of the flow space.

2. The laundry processing apparatus according to claim 1, wherein: The air passage portion protrudes further rearward than the rear center portion, The air passage portion is formed by bending the rear surface of the drum and bulges rearward to form a space therein.

3. The laundry processing apparatus according to claim 1, wherein: The air passage portion protrudes further rearward than the rear center portion, The air passage portion is formed by bending the back surface of the drum and protrudes rearward to form a space inside.

4. The laundry processing apparatus according to claim 1, wherein: The air flow portion is formed by bending the rear plate and protrudes rearward to form the flow space open to the front inside.

5. The laundry processing apparatus according to claim 1, wherein: The air flow portion is formed by bending the rear plate and protrudes rearward to form the flow space open to the front inside.

6. The laundry processing apparatus according to claim 1, wherein: The rear plate includes a flow concave surface shielding the rear of the flow space, The air passing portion directly faces the flow recessed surface through the open front surface of the air flowing portion.

7. The laundry processing apparatus according to claim 1, wherein: The rear plate includes a rear protruding portion protruding rearward to form a space inside. The air flow portion protrudes rearward from the rear protruding portion, The air passing portion protrudes rearward from the drum rear surface and is inserted into the rear protruding portion, and faces the front surface of the air flowing portion.

8. The laundry processing apparatus according to claim 7, wherein: The drive mounting portion protrudes forward from the rear protruding portion and is surrounded by the air passing portion.

9. The laundry processing apparatus according to claim 7, wherein: The drum comprises a drum peripheral surface, the drum peripheral surface is located in front of the drum back surface and connected to the drum back surface, A peripheral connection portion connected to the peripheral surface of the drum is provided at the edge of the back side of the drum. The peripheral connection portion is located in front of the air passage portion and is located outside of the rear protruding portion based on the radial direction of the drum.

10. The laundry treating apparatus according to claim 9, wherein: The rear protrusion comprises: a rear outer peripheral surface extending rearward from the rear plate and extending along a periphery of the rear protruding portion; and a rear protruding surface connected to the rear outer peripheral surface at the rear side of the rear outer peripheral surface, The air passage portion comprises: Extending rearward from the peripheral edge connecting portion through the outer peripheral surface and extending along the peripheral edge of the air passing portion; and The air passing surface is connected to the passing outer peripheral surface at the rear side of the air passing portion and is inserted into the interior of the rear protruding portion. The through outer peripheral surface is inserted into the interior of the rear protruding portion and faces the rear outer peripheral surface.

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