Clothing treatment device

Abstract

The present application relates to a filter unit for filtering air, comprising: a frame unit provided with an inner frame and an outer frame coupled to the inner frame; a filter fixed by the coupling between the inner frame and the outer frame; and a shape-maintaining unit inserted between the inner frame and the outer frame to maintain the shape of the frame unit.

Description

Garment processing equipment

[0001] The present invention relates to a clothing treatment device for drying clothes.

[0002] A clothing treatment device is a general term for a device that washes clothes, a device that dries clothes, and a device that can both wash and dry clothes.

[0003] Among conventional clothing treatment devices capable of drying clothes, there were those including a drum that provides a space for storing clothes, a duct that forms a path for resupplying air discharged from the drum to the drum, a first heat exchanger that cools the air introduced from the drum to the duct to remove moisture contained in the air, a second heat exchanger that heats the air that has passed through the first heat exchanger, and a fan that moves the air that has passed through the second heat exchanger to the drum. In conventional clothing treatment devices having the above-described structure, since the air discharged from the drum is dehumidified and heated while passing through the heat exchangers and then resupplyed to the drum, there may be a problem in that foreign substances such as lint remain in the heat exchangers. In order to solve this problem, among conventional clothing treatment devices, there were those that were equipped to include a filter that filters the air supplied to the first heat exchanger. (EP2691567B1)

[0004] However, in the case of commercial dryers that can perform drying processes such as sterilization, wrinkle removal, deodorization, and drying by supplying steam or hot air to a large quantity of clothes, the drying capacity is increased compared to general dryers, so they need to be designed to be much larger in volume and to supply a larger amount of hot air, so that they can quickly dry a large quantity of clothes.

[0005] Accordingly, the importance of the filter is emphasized because the amount of foreign substances such as lint increases and accumulates in the heat exchanger, reducing the heat transfer area and easily reducing the drying performance.

[0006] However, in light of the special characteristics of commercial dryers, it is difficult to ensure structural robustness with the filters provided in existing general dryers, and the accessibility of the filters makes it difficult to periodically check their status and clean them.

[0007] In addition, there was a problem that the filter did not adhere to the inner surface of the duct during washing and assembly, resulting in reduced filtration performance and sanitary conditions.

[0008] The present application aims to solve the problem of providing a clothing treatment device equipped with a filter having improved structural robustness.

[0009] In addition, the present application aims to solve the problem of providing a clothing treatment device equipped with a filter that guarantees filtration reliability.

[0010] In addition, the present application aims to solve the problem of providing a clothing treatment device equipped with a filter that reduces production costs and improves processability.

[0011] In addition, the present application aims to solve the problem of providing a clothes treatment device equipped with a filter that is easy to wash and replace.

[0012] In addition, the present application aims to provide a clothing treatment device equipped with a filter that improves maintainability by visually checking the degree of lint deposition.

[0013] The present application provides a filter unit for filtering air, characterized in that it comprises a frame portion having an inner frame and an outer frame coupled to the inner frame; a filter net fixed by the coupling of the inner frame and the outer frame; and a shape-maintaining portion inserted between the inner frame and the outer frame to maintain the shape of the frame portion.

[0014] The above shape-maintaining portion is made of a material having higher rigidity than the frame portion, thereby preventing deformation of the frame portion.

[0015] The above frame part may be provided with a magnet that generates magnetic force inside so that it can be attached to and detached from an object.

[0016] The inner frame includes a coupling magnet receiving groove in which the coupling magnet is received, and the coupling magnet can be received in the coupling magnet receiving groove so as to be spaced apart from each other based on an edge connecting each side of the inner frame and the outer frame.

[0017] The above-mentioned combined magnet may be made of a material having elasticity.

[0018] The above shape-maintaining portion may be provided in the shape of a closed curve extending across the center of each side of the frame.

[0019] The above shape-maintaining part may be made of a metal material and include at least one welding line formed by welding an end portion to form a closed curve.

[0020] A fusion line is formed at a corner connecting each side of the inner frame and the outer frame by fusing the ends of the two sides forming the corner, and the shape-maintaining portion includes at least one welding line formed by welding the ends to form a closed curve, and the welding line can be formed at a point where it does not interfere with the fusion line when the shape-maintaining portion is inserted into the frame portion.

[0021] The above frame portion is provided in the form of a rectangle in which one pair of sides is shorter than the other pair of sides, and the welding line of the shape-maintaining portion can be formed in a portion inserted into a pair of sides that are relatively shorter among the sides of the frame portion.

[0022] A grooved portion protruding or recessed from the contact surface is formed on the contact surface where the inner frame and the outer frame face each other, and the outer frame can be joined to the inner frame by the shape of the grooved portion.

[0023] The above-mentioned filter net can be fixed by the pressure generated by the combination of the groove portion and the shape-maintaining portion and the frame portion.

[0024] The protrusion formed by protruding from the contact surface among the above-mentioned grooves may include a first extension extending from the contact surface; and a second extension extending from an end of the first extension with a shape that is at least partially different from the first extension.

[0025] In a cross-section perpendicular to the direction in which the protrusion protrudes from the contact surface,

[0026] At least a portion of the cross-section of the second extension may not overlap with the cross-section of the first extension based on the protrusion direction.

[0027] In a cross-section perpendicular to the direction in which each side of the above frame extends, the end of the second extension portion extending from the end of the first extension portion may be formed to be round.

[0028] In a cross-section perpendicular to the direction in which each side of the above frame extends, the second extension portion may be provided in a hook shape on one side of the end of the first extension portion.

[0029] The above protrusions are provided in multiple numbers, and the multiple protrusions can be arranged in a row along the inner to outer direction of the frame portion on each side of the frame portion.

[0030] The second extension portion may be provided to include at least one pair of hook shapes formed to face each other from an end of the first extension portion.

[0031] The second extension portion may be provided to include at least one pair of hook shapes formed from an end of the first extension portion to one side of the frame.

[0032] The above grooved portion includes a first grooved portion protruding on one surface of the inner frame facing the outer frame; and a second grooved portion recessed on one surface of the outer frame facing the inner frame to be in conformity with the first grooved portion; and the outer frame can be coupled to the inner frame by conformity of the first grooved portion and the second grooved portion.

[0033] At least one of the inner frame and the outer frame may have a shape-retaining portion receiving groove formed to receive the shape-retaining portion.

[0034] The above groove portion is provided in a plurality, and the plurality of groove portions are arranged in a row from the inside to the outside of the frame portion on each side of the frame portion, and the shape-maintaining portion receiving groove can be formed between the plurality of groove portions.

[0035] The above shape-maintaining member may be provided with a material having a torsional rigidity greater than or equal to that which resists the torsional moment of the frame generated by the tension applied by the filter net.

[0036] The above frame section can accommodate a magnetic field source whose magnetic signal is detected by a magnetic sensor.

[0037] The above frame portion accommodates a magnetic field source whose magnetic signal is detected by a magnetic sensor, and the magnetic field source can be fixed to the inner frame to replace a part of the first groove portion and accommodated in the second groove portion.

[0038] At least a portion of the edge of the outer surface of the outer frame is formed with a sealing rib protruding outward, and the sealing rib can block air from flowing through the joint between the outer surface of the frame and the object when the frame portion is fixed to the object.

[0039] At least a portion of the outer frame may be formed with a handle portion that protrudes outward from the duct and is gripped by the user.

[0040] The present application provides a garment treatment device equipped with a filter having improved structural robustness.

[0041] In addition, the present application provides a clothing treatment device equipped with a filter whose filtration reliability is guaranteed.

[0042] In addition, the present application provides a garment treatment device equipped with a filter with reduced production cost and improved processability.

[0043] Additionally, the present application provides a garment treatment device equipped with a filter that is easy to wash and replace.

[0044] In addition, the present application provides a clothing treatment device equipped with a filter that improves maintainability by visually checking the degree of lint deposition.

[0045] Figures 1 and 2 illustrate examples of a clothing treatment device.

[0046] Figure 3 illustrates an example of the internal structure of a clothing treatment device.

[0047] Figure 4 illustrates an example of a clothing treatment device.

[0048] Figure 5 illustrates an example of a door of a garment processing device.

[0049] Figures 6 and 7 illustrate an example of the front configuration of a garment treatment device.

[0050] Figure 8 illustrates an example of a sealing structure of a clothing treatment device.

[0051] Figure 9 illustrates an example of the arrangement position of the driving unit of the clothing treatment device.

[0052] Figure 10 illustrates an example of the rear configuration of a garment treatment device.

[0053] Figure 11 illustrates an example of the drum structure of a garment treatment device.

[0054] Figure 12 shows an example of an exploded view of the drum.

[0055] Figure 13 illustrates an example of a duct module of a clothing treatment device.

[0056] Figure 14 illustrates an example of a circulation fan of a clothing treatment device.

[0057] Figure 15 illustrates an example of a drying module of a clothing treatment device.

[0058] Figure 16 illustrates an example of the internal configuration of the drying module.

[0059] Figure 17 is a schematic diagram of the structure in which the auxiliary heat exchanger of the clothing treatment device is installed.

[0060] Figure 18 illustrates an example of an opening of the above duct module.

[0061] Figure 19 illustrates an example of an exploded view of the first filter of the above duct module.

[0062] Figure 20 illustrates an example of a process for manufacturing the frame of the first filter.

[0063] Figure 21 illustrates an example of a flow chart of a method for manufacturing a frame of the first filter.

[0064] Fig. 22 illustrates an example of the outer frame of the first filter.

[0065] Fig. 23 illustrates an example of the inner frame of the first filter.

[0066] Fig. 24 illustrates an example of a groove portion of the first filter.

[0067] Figure 25 illustrates an example of the shape of the above-mentioned groove.

[0068] Fig. 26 illustrates an example of a frame of the first filter.

[0069] Fig. 27 illustrates an example of a shape-maintaining portion of the first filter.

[0070] Figure 28 illustrates an example of the assembly process of the first filter.

[0071] Figure 29 illustrates an example of the first filter.

[0072] Figure 30 illustrates an example of a cross-section of A-A' of Figure 29.

[0073] Fig. 31 illustrates an example of a cross-section of B-B' of Fig. 29.

[0074] Fig. 32 illustrates an example of a cross-section of C-C' of Fig. 29.

[0075] Figure 33 illustrates an example of a second filter of the above duct module.

[0076] Figure 34 illustrates an example of an exploded view of the second filter.

[0077] Figure 35 illustrates an example of a filter support part of the above duct module.

[0078] Figure 36 illustrates an example of the duct module equipped with the first filter and the second filter.

[0079] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. In this specification, identical or similar components are assigned identical or similar reference numerals even in different embodiments, and the description thereof is replaced with the first description. The singular expression used in this specification includes plural expressions unless the context clearly indicates otherwise. In addition, when describing the embodiments disclosed in this specification, if a detailed description of a related known technology is judged to obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, it should be noted that the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification should not be construed as being limited by the attached drawings.

[0080] Figure 1 illustrates one embodiment of the clothing treatment device of the present invention.

[0081] The clothing treatment device of the present invention may be equipped with a dryer capable of performing any drying course to remove moisture from clothing.

[0082] The clothing treatment device of the present invention may include a drying body (10) capable of accommodating clothing, a drying module (20) capable of supplying at least one of heated air (hot air) and steam to the drying body (10), and a duct module (30) providing a path through which air inside the drying body (10) can be discharged to the drying module (20) or the outside.

[0083] The garment treatment device of the present invention can be installed as a commercial dryer. Accordingly, the garment treatment device of the present invention can be deployed in environments where multiple users repeatedly perform the drying cycle, or where a large quantity of clothing, such as blankets or bedding, must be dried, compared to a household dryer. Therefore, the garment treatment device of the present invention must be equipped to accommodate a larger volume of clothing than a household dryer, and must be equipped to supply more hot air than a household dryer to quickly perform the drying cycle.

[0084] To this end, the clothes treatment device of the present invention needs to have a larger volume of the drying body (10) than a configuration for accommodating clothes in a home dryer, the drying module (20) needs to have a larger volume than the drying module of a home dryer in order to generate a large amount of hot air, and the duct module (30) needs to be larger than the duct module of a home dryer in order to allow a sufficient amount of air to move.

[0085] Accordingly, the clothing treatment device of the present invention may be provided such that at least one of the drying module (20) and the duct module (30) is disposed as a separate configuration from the drying main body (10) and is detachably coupled to the drying main body (10).

[0086] As a result, the clothing treatment device of the present invention can sufficiently expand the volume of the drying body (10) without being restricted by the installation space of the drying module (20) or the duct module (30). As a result, the drying body (10) can be equipped to accommodate a large amount of clothing without difficulty.

[0087] In addition, the clothing treatment device of the present invention can sufficiently expand the volume of the drying module (20) without being restricted by the installation space of the drying main body (10) or the duct module (30). Accordingly, the drying module (20) can also increase the volume of the heat supply unit that heats air or generates steam, so that it can be equipped to generate sufficient hot air to dry a large amount of clothing or sufficient steam to sterilize and disinfect a large amount of clothing.

[0088] In addition, the clothing treatment device of the present invention can sufficiently expand the volume of the duct module (30) without being restricted by the installation space of the drying main body (10) or the drying module (20). Accordingly, the duct module (30) can secure a path for a sufficient amount of air to move to the expanded drying main body (10) and the drying module (20), and a large-capacity filter described later can also be stably installed.

[0089] When the above drying body (10) is provided with an opening through which clothes are put in, the drying module (20) and the duct module (30) may be provided to communicate with the drying body (10) at a position that does not interfere with the opening.

[0090] When the opening of the above drying body (10) is arranged at the front, the drying module (20) may be arranged at any one of the upper, lower, both sides, and rear of the drying body (10), and the duct module (30) may be arranged at any one of the upper, lower, both sides, and rear of the drying body (10) at a position that does not interfere with the drying module (20).

[0091] For example, the clothing treatment device of the present invention can place the drying module (20) at the rear of the drying main body (10).

[0092] Accordingly, the volume of the drying module (20) can be expanded to be larger than when the drying module (20) is arranged at the top and bottom of the drying body (10), thereby maximizing the heating or heat exchange performance. In addition, since the drying module (20) is arranged at the rear of the drying body (10) rather than being provided at the side of the drying body (10), the overall width of the clothing treatment device of the present invention can be reduced, thereby allowing the clothing treatment device of the present invention to be easily arranged in a plurality of units in a limited space. In addition, since the drying module (20) is arranged at the rear of the drying body (10), the flow path direction in which the hot air is discharged can be aligned with the flow path direction inside the drying body (10), thereby reducing the overall flow resistance.

[0093] Meanwhile, the duct module (30) may be placed on either the upper or lower side of the drying body (10). This allows the overall width of the garment treatment device of the present invention to be reduced compared to when it is placed on the side of the drying body (10).

[0094] The above duct module (30) can be placed at the bottom of the drying body (10). As a result, the clothing treatment device of the present invention can position the opening of the drying body (10) higher from the ground, and the user can easily take in and take out a large amount of clothing through the opening.

[0095] Figure 2 illustrates an embodiment in which the configuration of the garment treatment device of the present invention is detachably provided.

[0096] The clothing treatment device of the present invention may be manufactured such that at least one of the drying main body (10), drying module (20), and duct module (30) is separated from the other and detachably coupled to allow air to flow through.

[0097] In general, the drying module (20) is equipped with heavy components for heating air or supplying steam, and may be relatively heavier than the drying main body (10) or duct module (30). In addition, the drying module (20) may have more electrical components than the internal components of the drying main body (10) and duct module (30), and thus may require more frequent maintenance.

[0098] To this end, the clothing treatment device of the present invention can be designed so that the drying module (20) can be detachably attached to the drying main body (10). Accordingly, the drying module (20) can be transported separately from the drying main body (10) to easily install the clothing treatment device of the present invention, and if there is a problem with the electrical components of the drying module (20), it can be replaced separately from the drying main body (10), and some parts of the drying module (20) can be replaced by separating it from the bulky drying main body (10), thereby facilitating maintenance work.

[0099] Meanwhile, the clothing treatment device of the present invention may be provided with the drying main body (10) and the duct module (30) as an integral unit. As a result, the connection between the drying main body (10) and the duct module (30) is strengthened, thereby preventing the possibility of air discharged from the drying main body (10) leaking to the outside.

[0100] In addition, even if strong vibration occurs in the drying body (10) due to the movement of a large amount of clothing, the drying body (10) can be prevented from being arbitrarily separated from the duct module (30). The drying body (10) and the duct module (30) can be placed inside a single cabinet and manufactured and transported simultaneously.

[0101] This is only an example, and the above-mentioned drying body (10) and the above-mentioned duct module (30) may be provided as separate modules and may be provided so as to be detachable from each other.

[0102] Figure 3 illustrates an embodiment of the internal structure of the garment treatment device of the present invention.

[0103] The clothing treatment device of the present invention is equipped with an exhaust type, and the drying module (20) and the drying main body (10) are arranged to communicate with each other, and the drying main body (10) and the duct module (30) are arranged to communicate with each other. However, the drying module (20) and the duct module (30) may be arranged so as not to communicate with each other.

[0104] As illustrated, when the garment treatment device of the present invention is arranged in a circulating manner, the drying body (10), the duct module (30), and the drying module (20) can be arranged so that air flows through them. Accordingly, the garment treatment device of the present invention can be installed without difficulty, regardless of whether the indoor space is connected to the outdoors, as long as the installation space is secured.

[0105] The above drying body (10) may include a cabinet (110) that forms an exterior and has an opening, a door (120) that opens and closes the opening, and a drum (150) that is rotatably provided inside the cabinet (110) and receives clothes inserted through the opening.

[0106] The garment treatment device of the present invention may include a driving unit (160) that rotates the drum (150). Accordingly, garments accommodated in the drum (150) may be exposed to hot air supplied to the drum (150) and dried while rising and falling within the drum (150) due to the rotation of the drum (150).

[0107] The above driving unit (160) can be placed in the drying body (10).

[0108] Accordingly, the drum (150) and all components that rotate the drum (150) can be installed in the drying body (10) itself, and can be maintained independently of the components of the duct module (30) or the drying module (20). In addition, since the entire configuration of the driving unit (160) is installed independently of the duct module (30), the duct module (30) omits a configuration for the driving unit (160) to pass through or be installed, so that the sealing performance of the duct module (30) can be enhanced.

[0109] The above duct module (30) may include a circulation fan (330) positioned at the rear of the duct body (310) to move the air, which is positioned lower than the drum (150) and can receive air discharged from the drum (150), and a fan receiving portion (320) that provides a space in which the circulation fan (330) is installed.

[0110] The above duct body (310) may be provided so that the outer surface is completely sealed to prevent air from leaking to the outside, except for air flowing in from the drum (150).

[0111] The above duct body (310) may be provided in any shape as long as it is provided so that air discharged from the drum (150) can be introduced at the top and the air can be delivered to the rear.

[0112] For example, the duct body (310) may be provided in the shape of a case that is positioned at the bottom of the cabinet (110) to support the cabinet (110) and is shielded on all sides.

[0113] Alternatively, the duct body (310) may be provided in a configuration in which a plate for shielding the interior is combined with a frame, such as a rectangular parallelepiped, which is disposed inside the cabinet (110) and supports the internal components of the cabinet (110). For example, the drying body (10) and the duct module (30) may be installed in one cabinet (110). The drying body (10) and the duct module (30) may be provided to share one cabinet (110). The drying body (10) and the duct module (30) may be installed inside the cabinet (110) forming the exterior, or the duct module (30) may be installed under the drying body (10) after the drying body (10) is manufactured. In this way, hot air or steam can be prevented from leaking between the drying body (10) and the duct module (30), installation and transportation can be made easier, and aesthetics can be enhanced.

[0114] The fan receiving portion (320) may be coupled to the duct body (310) or may be provided to be supported inside the duct body (320) to receive the circulation fan (330).

[0115] The fan receiving portion (320) may be positioned rearward from the front of the duct body (310) to secure a space into which air discharged from the front of the drum (150) may be introduced. In addition, the fan receiving portion (320) may be positioned close to or in close contact with the drying module (20) to form a path for delivering the air to the drying module (20).

[0116] The above duct module (30) may further include a filter unit (4) that is placed in front of the fan receiving portion (320) and filters foreign substances flowing into the circulation fan (330).

[0117] The above filter unit (4) is provided in front of the fan receiving portion (320) with a length corresponding to the width of the duct body (310) so as to be able to filter foreign substances discharged from a large amount of clothing without difficulty.

[0118] The filter unit (4) may be provided detachably from the duct body (310) so that accumulated foreign substances can be easily removed. The duct body (310) may include an entrance through which the filter unit (4) is introduced and withdrawn, and the entrance may be arranged at the front of the duct body (310). Accordingly, a user can check the status of the filter unit (4) and clean it without being limited by the configuration of the drying module (20) or the door (120).

[0119] The above drying module (20) may be arranged at the rear of the cabinet (110) to supply hot air and steam to the interior of the cabinet (110).

[0120] The above drying module (20) may be arranged so that the front lower part faces the duct module (30) and the front upper part faces the back surface of the drying body (10) or the drum (150).

[0121] The above drying module (20) may include a case (210) placed at the rear of the cabinet (110) and a heat exchange unit (240) placed inside the case (210) to dehumidify and heat the air.

[0122] The case (210) may be provided at a height that allows it to face the entire back surface of the drum (150) from the bottom of the duct module (30). The width of the case (210) may be provided to correspond to the width of the cabinet (110) or may be provided to be smaller. Accordingly, the case (210) may be installed without any problem in any space where the cabinet (110) can be installed.

[0123] The front-to-back thickness of the case (210) may be set to be smaller than the front-to-back thickness of the cabinet (110) and the duct module (30). As a result, the volume of the garment treatment device of the present invention can be designed to be compact.

[0124] The drying module (20) may further include a flow path forming part (220) disposed inside the case (210) to guide air discharged from the duct module (30) back to the drum (150). At least a portion of the heat exchange part (240) may be disposed inside the flow path forming part (220).

[0125] The above-mentioned euro-forming part (220) may be provided to extend in the height direction of the cabinet (110) or the case (210) to receive air discharged from the duct module (30) and guide it to the back surface of the drum (150).

[0126] The above duct body (310) may be equipped with a pressure sensor that detects changes in air pressure.

[0127] The above pressure sensor only needs to detect the pressure applied to the sensor and output it as another physical quantity such as an electrical quantity, and is not limited by its function or type, such as an absolute pressure sensor, a gauge pressure sensor, or a differential pressure sensor.

[0128] The above pressure sensor may be provided to determine at least one of the pressure values ​​of the upstream or downstream by a first pressure sensor (PS1) arranged on the upstream side where air flows into the filter unit (4) and a second pressure sensor (PS2) arranged on the downstream side where air is discharged through the filter unit (4).

[0129] The filtering performance of the filter unit (4) can be detected to fall below a certain level through the first pressure sensor (PS1) or the second pressure sensor (PS2). That is, when foreign substances are excessively accumulated in the filter mesh (41) of the filter unit (4) to a level where drying performance and condensation efficiency are not guaranteed, the filter unit (4) can be detected to be clogged.

[0130] For example, if the pressure value measured by the first pressure sensor (PS1) is above a certain level, it is determined that the filtering performance of the filter unit (4) has deteriorated and air is accumulated upstream of the filter unit (4), so it can be determined that the filter unit (4) is clogged.

[0131] Alternatively, if the pressure value measured by the second pressure sensor (PS2) is below a certain level, it is determined that the filtering performance of the filter unit (4) has deteriorated and air does not move to the rear of the filter unit (4), so it can be determined that the filter unit (4) is clogged.

[0132] Preferably, the pressure sensor may be provided to detect the pressure at the front and rear of the filter unit (4).

[0133] For example, the pressure sensors may be provided in multiple numbers and arranged in front of the filter unit (4) and at the rear of the filter unit (4). Accordingly, the pressures are measured by the first pressure sensor (PS1) and the second pressure sensor (PS2), and when the difference between the measured pressures exceeds a preset reference value, it may be determined that the filter unit (4) is clogged.

[0134] Alternatively, if the pressure sensor is provided as a differential pressure sensor and the difference in pressure measured by the first pressure sensor (PS1) and the second pressure sensor (PS2) exceeds a preset reference value, it can be determined that the filter unit (4) is clogged, as the flow before and after the filter unit (4) is not smooth.

[0135] The above filter unit (4) is provided in multiple units, and the pressure sensor can be provided to determine the clogging of each filter unit (4), to determine the clogging of multiple filter units (4) at once, or to determine the clogging of some of the filter units (4).

[0136] For example, the clogging of each of the plurality of filter units (4) can be determined by measuring the difference in pressure between the upstream and downstream of each filter unit (4).

[0137] For example, the blockage of the entire plurality of filter units (4) can be determined by measuring the pressure difference between the upstream of the filter unit (4) that receives the air of the drum (150) first and the downstream of the filter unit (4) that receives the air of the drum (150) last.

[0138] For example, blockage can be determined by specifying the difference in pressure between the upstream and downstream of some of the plurality of filter units (4) set to detect blockage.

[0139] In one embodiment of the present invention, an inlet port through which air is delivered from the drum (150) is formed on the upper surface of the duct body (310), and the filter unit (4) may include an upstream filter that filters air delivered to the inlet port and a downstream filter that is positioned downstream of the upstream filter and delivers the filtered air to the blower fan (330).

[0140] In the above-described case, the pressure sensor can measure the pressure difference between the upstream and downstream sides of the upstream filter and the downstream filter, respectively, to measure the clogging of the upstream filter and the downstream filter, respectively.

[0141] The above-mentioned upstream filter may be provided to shield the inlet port and filter the air delivered to the inlet port, and the above-mentioned downstream filter may be provided to traverse the air flowing forward and backward through the duct body. In this case, the pressure sensor may detect the pressure of at least one of the front and rear of the downstream filter to detect clogging of the filter unit (4).

[0142] In the above-described case, if the amount of change in pressure measured by the first pressure sensor (PS1) in front of the downstream filter is below the reference range, it is determined that the air flow in the downstream portion of the upstream filter and the upstream portion of the downstream filter is stagnant, and thus the upstream filter and the downstream filter may be determined to be clogged. For example, if the difference between the pressure value measured by the first pressure sensor (PS1) in front of the downstream filter and the pressure value measured by the second pressure sensor (PS2) in the rear of the downstream filter exceeds the reference value, clogging of the downstream filter may be detected.

[0143] In the above-described case, the pressure sensor may be provided as a differential pressure sensor and may be provided to detect the difference between the pressure value measured by the first pressure sensor (PS1) in front of the downstream filter and the pressure value measured by the second pressure sensor (PS2) in the rear of the downstream filter. In this case, if the difference between the pressure values ​​measured by the first pressure sensor (PS1) and the second pressure sensor (PS2) is greater than or equal to a reference value, clogging of the downstream filter may be detected, and if the difference between the pressure values ​​measured by the first pressure sensor (PS1) and the second pressure sensor (PS2) is greater than or equal to a reference value and the rate of change of the difference exceeds a certain level, it may be determined that both the upstream filter and the downstream filter are clogged.

[0144] The above-mentioned upstream filter may be easily accessible by being exposed on the upper surface of the duct body. Accordingly, the user can periodically check the condition of the above-mentioned upstream filter and remove any aggregated foreign matter, thereby preventing or resolving blockages.

[0145] The above downstream filter is installed inside the duct body, so it may be difficult to visually confirm whether it is clogged. Therefore, the reliability of the filter performance of the filter unit (4) can be improved by detecting clogging of the downstream filter by detecting the pressure in front and behind the downstream filter.

[0146] The above circulation fan (330) may be provided so as to be spaced apart from the bottom surface of the duct body (310) by a predetermined distance. This can minimize the occurrence of vortices or the like due to the air discharged downward from the inlet of the duct body (310) colliding with the bottom surface of the duct body (310). Accordingly, the pressure sensor may be provided to detect the pressure of a portion spaced apart from the bottom surface of the duct body (310) by a predetermined distance or more, thereby improving the reliability of sensing.

[0147] The above circulation fan (330) may be arranged to be offset to either the left or right side of the duct body (310) or the fan receiving portion (320). As a result, the area of ​​a vortex or a dead zone where air does not flow can be reduced compared to when the circulation fan (330) is arranged in the center of the duct body (310) or the fan receiving portion (320). In this case, the pressure sensor is provided to detect the pressure of the left or right side of the duct body (310) to which the circulation fan (330) is offset, so that the reliability of the sensing can be improved.

[0148] The above pressure sensor may be provided to detect the pressure of a portion of the inlet provided on the upper surface of the duct body (310) extending in the vertical direction. Accordingly, error factors due to interference between the inner wall of the duct body (310) or other components can be minimized.

[0149] The duct body (310) may include an outlet through which air is delivered to the circulation fan provided at the rear. The pressure sensor may be provided to detect the pressure in the portion where the outlet extends in the forward-backward direction. Accordingly, error factors due to interference between the inner wall of the duct body (310) or other components may be minimized.

[0150] The above pressure sensor can notify the user to clean the filter when the difference between the pressure values ​​measured by the first pressure sensor (PS1) and the second pressure sensor (PS2) exceeds a first reference value. The first reference value may be a range in which foreign substances have accumulated to a certain extent in the filter unit (4) and the filtration performance has decreased, but dryness, etc. can be guaranteed.

[0151] When the pressure sensor detects that the difference between the pressures measured by the first pressure sensor (PS1) and the second pressure sensor (PS2) exceeds the first reference value and reaches the second reference value, the drying function may be stopped. The second reference value may be a section where the drying performance and condensation efficiency are excessively reduced, resulting in energy efficiency falling below a certain level or damage to the components due to idling.

[0152] The above pressure sensor can detect the pressure of the drying module (20) or the drying main body (10) in addition to the duct body (310).

[0153] In one embodiment of the present invention, the pressure sensor may be provided to detect a difference in pressure between the upstream side of the evaporator (241) and the downstream side of the condenser (242) through a third pressure sensor (PS3) that measures the pressure on the upstream side of the evaporator (241) and a fourth pressure sensor (PS4) that measures the pressure on the downstream side of the condenser (242). Accordingly, clogging of the heat exchanger (240) or the filter unit (4) can be detected. The pressure value measured by the third pressure sensor (PS3) can be replaced with the pressure value on the downstream side of the filter unit (4), and thus can be replaced with the pressure value measured by the second pressure sensor (PS2).

[0154] If the difference between the pressures measured by the third pressure sensor (PS3) and the fourth pressure sensor (PS4) exceeds a preset value, it is determined that the amount of air discharged downstream of the condenser (242) is relatively small compared to the amount of air flowing in upstream of the evaporator (241), so it can be detected that the heat exchange unit (240) including the evaporator (241) and the condenser (242) is blocked.

[0155] If the difference between the pressures measured by the third pressure sensor (PS3) and the fourth pressure sensor (PS4) is detected to be less than a preset value, it is determined that the amount of air flowing into the upstream of the evaporator (241) has decreased, and thus clogging of the filter unit (4) can be detected.

[0156] However, if the pressure sensor measures only the difference between the third pressure sensor (PS3) and the fourth pressure sensor (PS4), and if both the filter unit (4) and the heat exchanger (240) are clogged, the difference value between the third pressure sensor (PS3) and the fourth pressure sensor (PS4) can be measured similarly to the case where both the filter unit (4) and the heat exchanger (240) are not clogged. Therefore, by separately detecting the clogging of the filter unit (4) through the first pressure sensor (PS1) and the second pressure sensor (PS2), it is possible to clearly detect whether the clogged component is the filter unit (4) or the heat exchanger (240).

[0157] Figure 4 illustrates an embodiment of the front configuration of the garment treatment device of the present invention.

[0158] The cabinet (110) forming the exterior of the above-mentioned drying body (10) may include a front panel (111) positioned in front of the drum (150) and side panels (113) extending rearward from both sides of the front panel (111).

[0159] When the above duct module (30) is installed inside the cabinet (110), the drying body (10) may further include a cover panel (112) provided to shield the front of the duct body (310).

[0160] The above cover panel (112) can be arranged parallel to the front panel (111) and can be provided with a width corresponding to the width of the front panel (111).

[0161] The height of the cover panel (112) may be provided to be smaller than the height of the front panel (111), and may be provided to be smaller than the width of the cover panel (112).

[0162] The above front panel (111) may be provided with a height longer than its width.

[0163] The drying body (10) may further include a control panel (190) on the upper part of the front panel (111) for receiving a command to control the clothing treatment device of the present invention or for displaying the status of the clothing treatment device of the present invention.

[0164] The above-mentioned drying body (10) may further include a payment device for receiving fees, which is placed on one side of the control panel (190). The payment device may be equipped with any payment method capable of processing payments by inserting coins, communicating with a card, smartphone, etc.

[0165] The front panel (111) may be provided with an opening (1111) that connects the drum (150) to the outside. The drying body (10) may further include a door (120) that opens and closes the opening (1111), and the door (120) may be rotatably coupled to the front panel (111), or a support structure inside the front panel (111) may be rotatably coupled by a hinge joint (130) to open and close the opening (1111).

[0166] Figure 5 illustrates an embodiment of the door structure of the garment treatment device of the present invention.

[0167] Referring to FIG. 5(a), the door (120) may include an outer frame (121) that is formed to be larger than the area of ​​the opening (1111) and is exposed to the outside, an inner frame (122) that is coupled to the outer frame (122) to open and close the opening (1111), and a hinge portion (125) that is arranged between the inner frame and the outer frame and rotates the door (120) relative to the cabinet (110).

[0168] The inner frame (122) may include a sealing portion (124) that adheres closely to the inner surface of the opening (1111) to prevent hot air from leaking out of the opening (1111). The sealing portion (124) may be provided in a shape corresponding to the opening (1111).

[0169] The inner frame (122) and the outer frame (121) may have a through hole formed through the center to visually expose the inside of the opening (1111), and the door (120) may further include glass (123) that is bonded between the inner frame (122) and the outer frame (121) to shield the through hole and allow light to pass through.

[0170] The inner frame (122) may be provided with a protrusion on the inner surface to be inserted at least partially into the inner surface of the opening (1111), and the sealing portion (124) may be provided with an elastic material that is combined to surround the circumference of the protrusion.

[0171] Meanwhile, the inner frame (122) may additionally be provided with a fixing member (126) that is provided to be detachably connected to a fastening member provided on the front panel (111).

[0172] The above door (120) may further include a handle (127) that can be grabbed by the user's body by having the outer surface of at least one of the inner frame (122) or the outer frame (121) sunken inward.

[0173] The above fixed part (126) and fastening part may be configured with a conventional hook and hook fastening part.

[0174] However, the garment treatment device of the present invention can omit a configuration such as a locking part that locks the door (120) to the front panel (111) and prevents the door (120) from being opened. As a result, the thickness of the front panel (111) and the door (120) can be reduced, and the length of the drum (120) can be further secured, thereby further increasing the drying capacity.

[0175] Referring to FIG. 5(b), the outer frame (121) may include an outer body (1211) that forms an exterior and has a center that is penetrated to expose glass (123), a joining protrusion (1213) that is arranged on the inner surface of the outer body (1211) and is coupled to the inner frame (122), and a grounding protrusion (1212) that is provided to be able to contact the front panel (111) by penetrating the inner frame (122).

[0176] An elastic material is combined with the above grounding protrusion (1212), so that even if the door (120) collides with the front panel (111), the door (120) can be prevented from being damaged.

[0177] The above grounding protrusion (1212) and the above coupling protrusion (1213) may be provided in multiple numbers.

[0178] Figure 6 illustrates an embodiment of the front structure of the garment treatment device of the present invention.

[0179] The front panel (111) may be provided with an opening (1111) that penetrates the front panel, and the opening (1111) may be provided with a shape corresponding to the inner shape of the door (120).

[0180] The front panel (111) may further include a hinge joint (130) to which the hinge joint (125) can be coupled to at least one of both sides of the opening (1111).

[0181] The above hinge joints (130) can be arranged in multiple numbers spaced apart from each other in the vertical direction on one side of the opening (1111).

[0182] In addition, the hinge joint (130) may be arranged on both sides of the opening (1111). The door (120) may be coupled to the hinge joint (130) arranged on the left side of the opening (1111), or may be coupled to the hinge joint (130) arranged on the right side of the opening (1111), as needed. Accordingly, the garment treatment device of the present invention can selectively determine the rotational direction in which the door (120) opens and closes the opening (1111) depending on the location where the cabinet (110) is installed.

[0183] The above cover panel (112) can be detachably provided on the front of the duct body (310) at the lower portion of the front panel (111).

[0184] The cover panel (112) may be rotatably coupled at the lower portion to the lower portion of the duct body (310) or the floor panel of the cabinet (110), and may be detachably coupled at the upper portion to the upper portion of the duct body (310) or the lower portion of the front panel (111). As a result, the cover panel (112) may be prevented from being lost even when the duct body (310) is opened.

[0185] The width of the duct body (310) may be provided to correspond to the width of the cabinet (110) so that a sufficient amount of flow can move. In addition, the front opening of the duct body (310) may be provided to correspond to the width of the duct body (310), and the filter unit (4) may be detachably provided on the duct body (310). That is, when the cover panel (112) is opened, the filter unit (4) may be exposed to the outside. Therefore, when the cover panel (112) is opened, the filter unit (4) may be provided to be easily withdrawn through the front opening.

[0186] The above filter unit (4) is provided to allow air to pass through and may be provided in a plate shape.

[0187] The filter unit (4) may be arranged to be inclined with respect to the height direction in the duct body (310). For example, the filter unit (4) may be provided such that the upper portion forming the upper portion and the lower portion forming the lower portion of the filter unit (4) are in close contact with the inner surface of the duct body (310), and the upper portion may be arranged forward or backward relative to the lower portion. As a result, the cross-sectional area through which air passes in the filter unit (4) may be provided to be much larger than the cross-sectional area in the front-rear direction of the duct body (310), so that the filtration performance may be maximized.

[0188] The filter unit (4) may be arranged so that the upper portion is positioned further forward than the lower portion within the duct body (310). Therefore, by opening the cover panel (112), the user can easily clean foreign substances accumulated in the filter unit (4) that have fallen to the bottom surface of the duct body (310) due to vibration caused by the operation of the drum (150), etc., or gravity. In addition, when the pressure sensor detects clogging of the filter unit (4) and the cover panel (112) is opened to remove the filter unit (4) through the front opening for cleaning or replacing the filter unit (4), the amount of foreign substances accumulated on the rear of the filter unit (4) is relatively small, so that the convenience of removal and hygiene can be increased.

[0189] If the above pressure sensor detects a blockage in the filter unit (4), the user

[0190] The above filter unit (4) may include a frame coupled to the inner surface of the duct body (310) and a mesh member that shields the internal space of the frame and allows air to pass through while filtering foreign substances.

[0191] The above filter unit (4) is detachably provided inside the duct body (310) and can be inserted and removed into the front opening of the duct body (310).

[0192] Figure 7 illustrates an embodiment of the internal configuration of the garment treatment device of the present invention viewed from the front.

[0193] The above cabinet (110) can have a reinforcing frame (115) for fixing the side panel (113) placed at least on one of the front and rear of the side panel (113).

[0194] The above front panel (111) can be fixed by being combined with the above reinforcing frame (115).

[0195] A rotatable drum (150) may be placed inside the cabinet (110). The drum (150) may have an inlet (1531) positioned at the front that communicates with the opening (1111).

[0196] The above drying body (10) may further include a housing (140) that is accommodated inside the cabinet (110) and accommodates the drum (150).

[0197] In general, in the case of a household dryer, the drum (150) is provided in a cylindrical shape without a through hole formed on the circumference, and a support plate that rotatably supports the drum (150) is formed on the front and rear of the drum, and a duct through which the air is communicated with a duct module (30), etc., may be installed on the support plate.

[0198] However, in the case of a commercial dryer, the diameter and length of the drum (150) are much larger than those of a household dryer, and it is highly likely that a larger volume of clothes will be loaded into the drum (150) than in a household dryer.

[0199] Moreover, when a large amount of clothing is wet in the drum (150), the weight inside the drum (150) is much greater than that of a household dryer, so it is difficult to stably support the drum (150) with a resin-based support plate generally applied to a household dryer.

[0200] In addition, in order to dry a large amount of clothing accommodated in the drum (150), sufficient flow rate must be secured, but a duct through which the flow rate can pass cannot be installed with a resin-based support plate generally applied to home dryers, and even if the duct can be installed, the problem of the front and rear length of the cabinet (110) becoming excessively long may occur.

[0201] To improve this, the garment treatment device of the present invention can accommodate the drum (150) through the housing (140) and stably support the drum (150) through the lower surface.

[0202] The above housing (140) may be made of a metal material to stably support the support member (170) that supports the drum (150), and may be thicker than the cabinet (110).

[0203] In addition, the housing (140) is provided with a larger cross-sectional area than the drum (150) and is provided in a duct shape capable of moving air, so as to secure the maximum amount of hot air supplied to the inside of the drum (150).

[0204] In addition, the housing (140) is provided to receive air from the drying module (20) through the rear and guide the air to the duct module (30) from the front, thereby eliminating the need for a separate duct to be formed in the front or front panel (111) of the drum (150).

[0205] Specifically, the housing (140) may be provided with an outlet on the bottom surface that supports at least a portion of the load of the drum (150) to discharge air introduced into the housing (140) to the duct module (30). The width of the outlet may be expanded to the maximum extent to the width of the bottom surface of the housing, and the width of the outlet in the front-back direction may be sufficiently expanded in the front-back direction of the bottom surface of the housing. As a result, by securing the area of ​​the outlet, the garment treatment device of the present invention may supply sufficient air to the housing (140).

[0206] In addition, the drum (150) is provided with a discharge hole on a portion of its circumference, so that even if the drum (150) is extended to the front panel (111), air inside the drum (150) can be easily discharged through the discharge hole. As a result, the garment treatment device of the present invention can secure a sufficient flow rate to dry a large amount of garments as a commercial dryer.

[0207] Specifically, the housing (140) can be placed between the cabinet (110) and the drum (130) to form a path through which air moves.

[0208] The housing (140) may be provided in a duct shape to accommodate the drum (150) and prevent hot air supplied to the drum (150) from leaking out of the cabinet (110).

[0209] The housing (140) may be provided so that the front and rear of the drum (150) are open, but the circumferential direction of the drum (150) is shielded.

[0210] The housing (140) may be provided so that the rear can communicate with the drying module (20) and the front can contact the front panel (111). As a result, hot air supplied from the drying module (20) can be guided to the front of the drum (150).

[0211] In addition, the housing (140) may be provided to communicate with the duct module (30). In order for the hot air supplied from the drying module (20) to sufficiently travel to the front of the drum (150), the housing (140) and the duct module (30) may be provided to communicate at a position closer to the front panel than the rear panel of the cabinet (110).

[0212] The above drying body (10) may further include a support member (170) that rotatably supports the drum (150) within the cabinet (110). As a result, the drum (150) can rotate stably within the cabinet (110) without vibration or positional change exceeding a reference value while holding heavy or large quantities of clothing.

[0213] The housing (140) can be secured and supported by at least a portion of the support member (170). To this end, the housing (140) can be secured and fixed to the upper portion of the duct module (30).

[0214] The above support member (170) may be arranged on the bottom surface of the housing (140) and the outer circumferential surface of the drum (150), and may also be arranged on the lower sides of both sides of the drum (150).

[0215] The above housing (140) may be provided with a different shape from the drum (150) as long as it can accommodate the drum (150) and guide hot air to the front of the drum (150).

[0216] For example, the drum (150) may have a circular cross-section in the diametric direction, but the housing (140) may have a polygonal cross-section in the height direction.

[0217] The above hinge joint (130) can be fixed by being joined to the housing (140).

[0218] The above hinge joint (130) can be coupled to both sides of the housing (140), and can be coupled to the inner surface of the housing (140) so that the coupling between the housing (140) and the side panel (113) of the cabinet is not obstructed.

[0219] The above housing (140) may be made of a metal material and may be provided to support the support member (170) and the hinge joint member (130).

[0220] Meanwhile, the housing (140) can support the driving unit (160) from the outside of the housing (140).

[0221] Figure 8 illustrates an embodiment of the sealing structure of the clothing treatment device of the present invention.

[0222] The housing (140) may be provided with an open front so that the drum (150) can be easily installed or replaced inside the housing (140).

[0223] The clothing treatment device of the present invention may include a sealing part (180) provided in the drying body (10) to prevent hot air or steam supplied from the drying module (20) from leaking out of the cabinet (110).

[0224] Specifically, the sealing portion (180) may include the front sealer (181) coupled to the housing (140).

[0225] The above front sealer (181) may be provided to seal between the front surface of the housing (140) and the inner surface of the front panel (111).

[0226] The front sealer (181) may be coupled along the perimeter of the front surface of the housing (140). The front sealer (181) may be provided as an elastic member that is coupled and fixed to the end of the front surface of the housing (140).

[0227] The above front sealer (181) may be provided so as to be in contact with the inner surface of the front panel (111).

[0228] The area of ​​the front surface of the housing (140) may be larger than the diameter of the drum (150) and the diameter of the opening (1111). Accordingly, the front sealer (181) may be positioned outside the opening (1111) and the drum (150).

[0229] In addition, since the housing (140) is a fixed configuration inside the cabinet (110), the front sealer (181) can be maintained in a fixed state when coupled to the housing (140). Accordingly, the front sealer (181) can exhibit higher sealing performance than when coupled to a moving object such as a drum.

[0230] Meanwhile, since the front sealer (181) is arranged along the front perimeter of the housing (140), the support member (170) and the hinge joint member (130) and other components can be arranged on the inside of the front sealer (181).

[0231] The above duct module (30) can be placed outside the front sealer (181).

[0232] Due to the above front sealer (181), the interior of the housing (140) is connected to the drying module (20) so that hot air can move, but the hot air can be prevented from leaking between the exterior of the housing (140) and the interior of the cabinet (110).

[0233] Figure 9 illustrates an embodiment of the arrangement position of the driving unit of the garment treatment device of the present invention.

[0234] The driving unit (160) of the garment treatment device of the present invention can be supported by being installed on the upper portion of the housing (140). The housing (140) is made of a metal material and can stably support the driving unit (160).

[0235] The above driving unit (160) may be provided as a belt / pulley type and may be provided to rotate the drum (150). Accordingly, when the driving unit (160) is positioned above the drum (150), the belt wound around the outer circumference of the drum (150) may also provide a force to support the drum (150).

[0236] Accordingly, even if a large amount of clothing or heavy clothing is placed in a wet state inside the drum (150), the drum (150) can rotate stably inside the housing (140).

[0237] In addition, the belt connecting the driving unit (160) and the drum (150) can have its tension stably maintained by the load of the drum (150) even as time passes.

[0238] Specifically, the driving unit (160) of the garment treatment device of the present invention may include a driving motor (161) that provides power to rotate the drum (150), a belt (162) that is provided to rotate by the driving motor (161) and comes into contact with the outer surface of the drum (150), and a fixing unit (163, 164) that fixes the driving motor (161) to the upper portion of the housing (140).

[0239] The above-mentioned fixing part (163, 164) may include a front fixing part (163) that is arranged in front of the driving motor (161) and is mounted on the upper surface of the housing (140), and a rear fixing part (164) that is arranged in the rear of the driving motor (161) and is arranged to face the front fixing part (163).

[0240] The above front fixing part (163) and the above rear fixing part (164) can also perform the role of fixing the side panels (113) on both sides of the cabinet.

[0241] The driving unit (160) may further include a swing unit (165) coupled to the front fixing unit (163) and the rear fixing unit (164) to support the driving motor (161). The swing unit (165) may be provided such that one side thereof is rotatably coupled to the front fixing unit (163) and the rear fixing unit (164) in the height direction and the other side thereof supports the driving motor (161). Accordingly, when the drum (150) vibrates or its position slightly changes during rotation, the swing unit (165) reciprocates accordingly to prevent excessive shock from being transmitted to the driving motor (161), and the tension of the belt (161) from changing suddenly.

[0242] The upper surface of the housing (140) can be spaced downward from the upper panel of the cabinet to secure a space in which the driving unit (160) can be installed.

[0243] That is, the housing (140) may have a bottom surface and both sides in the shape of a flat plate, but the upper surface of the housing (140) may have a polygonal shape such as a trapezoid.

[0244] For example, the housing (140) is provided so that both sides are formed lower than the central portion according to the shape of the drum (150), thereby securing a space for the driving unit (160) to be installed between the drum (150) and the cabinet (110).

[0245] The housing (140) may include an upper surface (143) that is positioned above the drum (150) and supports the driving unit (160).

[0246] The upper surface (143) may include an inclined surface (1431) that extends high from the side panel (113) of the cabinet (110) toward the upper portion of the drum (150).

[0247] The above-mentioned inclined surface (1431) is provided so that the height thereof decreases as it extends from the central portion of the drum (150) toward the side panel (113) of the cabinet (110), thereby securing a space in which the driving unit (160) can be installed at the upper ends on both sides of the drum (150).

[0248] Additionally, the upper surface (143) may include an extension surface (1432) that extends from the upper end of the inclined surface (1431) toward the upper portion of the drum (150) so as to maintain a height.

[0249] The above-mentioned inclined surface (1431) and the above-mentioned extended surface (1432) may be formed as flat plates without any curves. As a result, even if a portion having a different height is formed on the upper surface (143), the occurrence of an area where residual stress is concentrated can be prevented in advance.

[0250] Due to the above extension surface (1432), the inclined surface (1431) can be prevented from being extended excessively or the upper height from becoming excessively high, and the front fixing part (163) and the rear fixing part (164) can be stably supported so that the left and right are balanced.

[0251] The above-mentioned inclined surface (1431) may be provided to extend so as to have a lower height toward the side panel (113) from both ends of the above-mentioned extended surface (1432), and may be formed symmetrically with respect to the above-mentioned extended surface (1432).

[0252] The housing (140) may further include a bottom surface (141) that supports the support member (170) and is positioned on top of the duct module (30), and side surfaces (142) that extend upward from both sides of the bottom surface (141) and are positioned to face the side panel (113) and can be fixed to the side panel (113), and the top surface (143) may be provided to connect the side surfaces (142) to each other.

[0253] Figure 10 illustrates an example of the rear structure of the garment treatment device of the present invention.

[0254] The above drying module (10) may further include a rear support member (172) on the rear surface that rotatably supports the drum (150).

[0255] The above rear support member (172) can form a center of rotation around which the drum (150) rotates and can serve as a rotation axis of the drum (150).

[0256] The above rear support member (172) can be fixed by being joined to the rear panel (114) forming the rear of the cabinet (110).

[0257] The above rear panel (114) can be fixed by being combined with the side panels (113) of the cabinet (110) and the rear surface of the housing (140).

[0258] The above rear support member (172) may include a rotation shaft (1721) coupled to the rear rotation center of the drum (150) and a bracket (1722) that fixes the rotation shaft (1721) to the rear panel (114).

[0259] The above sealing portion (180) may further include a rear sealer (182) that seals between the back surface of the drum (150) and the rear panel (114).

[0260] The above bracket (1722) is fixed to the inner surface of the rear panel (114) and may be made of a metal material that is stronger or thicker than the rear panel (114). The above rotational shaft (1721) may be provided such that one end is rotatably coupled to the bracket (1722) and the other end is coupled to the drum (150) so as to rotate integrally with the drum (150).

[0261] The above-mentioned rotation shaft (1721) serves to rotatably support the drum (150), and the power to directly rotate the drum (150) can be provided by the driving unit (160). Accordingly, the configuration of a separate driving unit (160) between the rear of the drum (150) and the rear panel (114) is omitted, thereby further securing the volume of the drum (150) and further reducing the gap between the drying module (20) and the drum (150).

[0262] The driving unit (160) may be positioned closer to the rear of the drum (150) than to the front. Specifically, the driving unit (160) may be positioned closer to the rear panel (114) than to the front panel (111). This prevents the driving unit (160) from interfering with the discharge hole provided in the drum (150), which will be described later.

[0263] Figure 11 illustrates an embodiment of the drum structure of the garment treatment device of the present invention.

[0264] The above housing (140) may be provided in a case shape with the front open to accommodate the drum (150).

[0265] The housing (140) may be configured to have an open rear end. For example, the housing (140) may be composed of a bottom surface (141), two sides (142), and an upper surface (143).

[0266] The rear surface of the housing (140) may serve as an inlet for air to flow into the drying module (20). In addition, a through hole formed through the bottom surface (141) of the housing (140) may serve as an outlet (1411) for discharging the air to the duct module (30).

[0267] The above discharge port (1411) may be provided in the shape of a slit that penetrates the bottom surface (141) longer in the width direction than in the front-back direction.

[0268] The above drum (150) can be inserted from the front of the housing (140) and coupled to the rear support member (172) coupled to the rear panel (114).

[0269] The above drum (150) may include a drum body (151) having a cylindrical shape and providing a space for accommodating clothing.

[0270] The drum (150) may further include a front body (153) that is coupled to the front of the drum body (151) to maintain the shape of the drum body (151) and prevent the clothing from being randomly discharged from the drum body (151).

[0271] The above front body (153) is provided in a ring shape and can form an inlet (1531) in the center through which the clothing is inserted.

[0272] The drum (150) may include a lifter (156) that is coupled to the inner surface of the drum body (151) to elevate the clothing, and may further include a drum back surface that is coupled to the rear of the drum body (151) and fixed to the rear support member (172).

[0273] The above drum (150) may further include an exhaust hole (154) through which hot air can move by penetrating the drum body (151).

[0274] The above discharge holes (154) may be provided in multiple numbers along the circumference of the drum body (151). Meanwhile, the discharge holes (154) may be positioned further forward than backward of the drum body (151). As a result, the hot air introduced into the drum body (151) can move as far as possible to the front of the drum body (151), thereby drying more clothes.

[0275] The above discharge port (1411) may be arranged closer to the front than the rear of the bottom surface (144). The discharge hole (154) may be arranged in an area facing the discharge port (1411). The discharge hole (154) may be formed to be much longer than the width of the discharge port (1411) in the front-back direction. However, the discharge hole (154) may be arranged closer to the front than the rear of the drum body (151) so that at least a portion of the discharge hole (154) may overlap with the discharge port (1411) in the height direction. As a result, the air introduced into the drum body (151) may be discharged while moving as close to the discharge port (1411) as possible.

[0276] Meanwhile, the discharge hole (154) and the outlet (1411) can serve as a path for moving air, and the discharge hole (154) can be provided with a length corresponding to the diameter of the drum (150), and the outlet (1411) can be provided with a width corresponding to the width of the bottom surface (144). As a result, the garment treatment device of the present invention can omit a separate duct structure that is arranged in front of the drum (150) and guides the air discharged from the drum (150) to the duct module (30), and can prevent the length of the cabinet (110) from being excessively expanded in the front-to-rear direction while also extending the length of the drum (150) as much as possible, thereby sufficiently securing a drying capacity suitable for a commercial dryer.

[0277] Figure 12 illustrates an embodiment of the rear drum structure of the garment treatment device of the present invention.

[0278] The drum (150) may include a rear body (152) that is coupled to the rear of the drum body (150) and forms the back surface of the drum (150). The rear body (152) may be formed in a circular shape and may be coupled to the rear peripheral surface of the drum body (150).

[0279] The rear body (152) prevents the clothing from being detached from the rear of the drum (150) and allows the drum (150) to rotate around the rotation axis (1721).

[0280] The above rear body (152) may be provided to face the outlet through which hot air is discharged from the drying module (20).

[0281] The drum (150) may include a plurality of inlet holes (155) that penetrate the rear body (152) and introduce the hot air into the drum body (151).

[0282] The rear body (152) may have a connecting portion (157) positioned at the center facing the rotation axis (1721) and forming the center of rotation of the drum. The inlet hole (155) may be positioned between the inner surface of the rear body (152) and the outer surface of the connecting portion (157).

[0283] The rear body (152) may further include a plurality of radial ribs extending from the connecting portion (157) toward the inner circumferential surface of the rear body (152), and the inlet hole (155) may be formed between the radial ribs. The rigidity of the rear body (152) may be further reinforced through the radial ribs.

[0284] The above inlet hole (155) can be formed in an area sunken into the drum body (151) on the inner surface of the rear body (152). The lifter (156) can be fixed by having its rear end joined to the front surface of the inner surface of the rear body (152) and one end joined to the back surface of the front body (153).

[0285] The above drum (150) may further include at least one of a bushing portion (158) that reinforces the rigidity of the above coupling portion (157) and a shaft coupling portion (159) that is coupled to the bushing portion (158) and fixes the rotation shaft (1721).

[0286] The above bushing part (158) is made of a material that is thicker than the above connecting part (157) or has higher strength than the above connecting part (157) so as to stably support the above rotating shaft (1721).

[0287] The above-mentioned shaft coupling portion (159) may be provided in a disk shape that is coupled to the free end of the rotation shaft (1721) and has a diameter much larger than the diameter of the rotation shaft (1721). The shaft coupling portion (159) is coupled to the bushing portion (158) with a larger area than the rotation shaft (1721), so that even if an excessive load is applied to the rotation shaft (1721), the rotation shaft (1721) can be prevented from being detached or separated from the drum (150).

[0288] The above-mentioned shaft coupling portion (159) may also be provided with a material that is thicker than the above-mentioned coupling portion (157) or has higher strength than the above-mentioned coupling portion (157). The diameter of the above-mentioned shaft coupling portion (159) may be provided to be smaller than the diameter of the above-mentioned bushing portion (158).

[0289] Because the rear body (152) can be made of a relatively thin and light material due to the above bushing portion (158) and the above shaft coupling portion (159), the manufacturing cost of the drum (150) can be reduced, and the rotational moment for rotating the drum (150) can be lowered, thereby reducing the load on the driving portion (160).

[0290] The above rear body (152) can be folded rearward from the inner surface to secure an area or space where the rear sealer (182) can be installed.

[0291] The rear sealer (182) may be provided to surround the outermost portion of the inlet hole (155) and may be arranged along the inner circumference of the rear body (152). The entire area of ​​the outlet of the drying module (20) may be arranged within the rear sealer (182), and the rear sealer (182) may guide all supplied hot air to the inlet hole (155).

[0292] Fig. 13 illustrates an embodiment of a duct module of the clothing treatment device of the present invention.

[0293] The above duct module (30) may include a duct body (310) on which a filter unit (4) can be installed, a fan receiving portion (320) positioned at the rear of the duct body (310) to suck in air with negative pressure, and a blower fan (330) installed in the fan receiving portion (320) to form the negative pressure.

[0294] The above duct body (310) may be provided to provide a space within which air discharged from the housing (140) moves. The above duct body (310) may be provided in the shape of a case, or may be provided in the form of a combination of frames forming a rectangular parallelepiped and the frames shielded with a plate.

[0295] The above duct body (310) may be provided with a high-strength metal material to support the drying body (10).

[0296] The fan receiving portion (320) may be mounted on the duct body (310), or the fan receiving portion (320) may be positioned at the rear of the duct body (310) and may be positioned at the rear of the filter unit (4).

[0297] The fan receiving portion (320) may form a flow path that receives air from the front and discharges it from the rear. The fan receiving portion (320) may further include a fan fixing portion (340) at the front for fixing the circulation fan (330) to the fan receiving portion (320). Accordingly, even if the front of the fan receiving portion (320) is opened to a greater diameter than the circulation fan (330), the fan fixing portion (340) can prevent the circulation fan (330) from being separated from the fan receiving portion (320) and protect the circulation fan (330) from external impacts or foreign substances.

[0298] The above circulation fan (330) may be arranged to be offset to either the left or right side of the duct body (310) or the fan receiving portion (320). As a result, the area of ​​the vortex or dead zone where air does not flow can be reduced compared to when the circulation fan (330) is arranged in the center of the duct body (310) or the fan receiving portion (320).

[0299] The above duct module (30) may further include a partition panel (313) that is arranged in front of the fan receiving portion (320) in the duct body (310) and partitions the duct body (310) in the front-rear direction.

[0300] The above partition panel (313) may be provided to shield an area excluding the inlet area among the open areas of the fan receiving portion (320), and may fix the fan receiving portion (320) to the duct body (310).

[0301] The fan fixing part (340) can be fixed by being combined with the partition panel (313). The fan fixing part (340) is positioned to face the circulation fan (330), and an area facing the center of the circulation fan (330) can be penetrated to serve as an inlet for air to flow into the fan receiving part (320).

[0302] Fig. 14 illustrates an example of installing a circulation fan in a clothing treatment device of the present invention.

[0303] Referring to Fig. 14(a), the fan receiving portion (320) has a space in which the circulation fan (330) is installed, and may include a mounting portion (321) into which air introduced into the duct body (310) is sucked, and a connecting portion (322) that extends to the rear of the mounting portion (321) or is positioned at the rear of the mounting portion (321) to form a path for transmitting air discharged by the circulation fan (330) to the drying module (20).

[0304] The above-mentioned mounting portion (321) and the above-mentioned connecting portion (322) may be provided with a material that can be manufactured using a foaming method. Accordingly, even if the mounting portion (321) and the above-mentioned connecting portion (322) are provided with a complex structure to form a flow path therein, they can be manufactured to have a thicker thickness than when manufactured with a metal material or resin series. As a result, even if the circulation fan (330) is provided to be large enough to generate a large flow rate, the fan receiving portion (320) itself can absorb noise, the mounting portion (321) and the above-mentioned connecting portion (322) can also ensure durability against high flow rates, and the overall weight of the fan receiving portion (320) can be greatly reduced.

[0305] Additionally, materials that can be manufactured using the foaming method generally have very low thermal conductivity. Therefore, even if the fan housing (320) has a large volume and high-temperature hot air moves inside, the heat loss rate can be significantly reduced compared to when manufactured using metal or resin materials.

[0306] The above-mentioned mounting portion (321) may have an open surface formed in the front through which air flows. The mounting portion (321) may have a space formed on one side to accommodate the circulation fan (330), and a flow path formed on the other side to guide air supplied from the circulation fan (330) in the width direction of the duct body (310).

[0307] The above partition panel (313) may be provided to be coupled to the front of the mounting portion (321) to shield a portion of the open surface of the mounting portion (321) excluding the protective panel.

[0308] The above connecting portion (322) may be positioned on the other rear side of the mounting portion (321) and may extend to the front of the drying module (20). The connecting portion (322) may have a path formed therein through which air moves, and an exhaust port provided on the rear surface through which air is discharged.

[0309] The above-mentioned connecting portion (322) is provided separately from the above-mentioned securing portion (321) and can be fixed by being joined to the rear of the securing portion (321) through a force-fit method or a fastening member, etc. Accordingly, even if the extension directions of the flow paths formed inside the securing portion (321) and the connecting portion (322) are different from each other, the connecting portion (322) can be manufactured without difficulty using a foaming method.

[0310] The above circulation fan (330) may include an impeller (331) that generates power to move air and a fan motor (332) coupled to the impeller (331) to rotate the impeller (331).

[0311] Referring to Fig. 14(b), the circulation fan (330) may be supported by being coupled to at least one of the mounting portion (321) and the connecting portion (322). In this case, if the mounting portion (321) and the connecting portion (322) are made of a material capable of foam molding rather than a metal or resin series, the rigidity for supporting the circulation fan (330) may be insufficient.

[0312] To this end, the clothing treatment device of the present invention may include a fan fixing unit (340) that is coupled to the fan receiving unit (320) and fixes the installation position of the circulation fan (330).

[0313] The above fan fixing part (340) may be made of a material with higher strength than the foam material.

[0314] For example, the fan fixing unit (340) may include a fixing plate (341) made of a metal plate shape that can be fixed by being fixed by being fixed upward by being fixed to the second body (312).

[0315] The impeller (331) may be placed in front of the fixed plate (341) and may be placed inside the fan receiving portion (320), and the fan motor (332) may be placed in the rear of the fixed plate (342) and may be placed outside the fan receiving portion (320).

[0316] The above fixed plate (341) may further include a through hole through which the fan motor (332) may pass. Accordingly, the circulation fan (330) may be coupled to the fixed plate (341) by inserting the fixed plate (341) into the through hole.

[0317] The above fan fixing unit (340) may further include a fixing plate (342) that is positioned between the fan motor (332) and the impeller (331) and coupled to the fixing plate. The fixing plate (342) may be provided to shield the through hole and may fix the circulation fan (330) to the fixing plate (341).

[0318] Fig. 15 illustrates an example of the appearance of a drying module (20).

[0319] Referring to Fig. 15(a), the drying module (20) may include a case (210) arranged at the rear of the drying body (10) and the duct module (30). The case (210) may be arranged at the rear of the cabinet (110).

[0320] The above case (210) may be provided in a rectangular parallelepiped shape, and its height may be provided to be equal to or smaller than the entire height of the cabinet (110).

[0321] Referring to FIG. 15(b), the case (210) may include a flow path forming part (220) that forms a flow path for supplying air from the duct module (30) to the drying body (10), and an auxiliary flow path part (230) that is arranged on one side of the flow path forming part (220) and forms a flow path for communicating the case (210) with external air. The flow path forming part (220) and the auxiliary flow path part (230) may be arranged to be partitioned from each other so that air therebetween does not move with each other.

[0322] A plurality of heat exchangers for dehumidifying and heating air may be installed inside the above-mentioned flow path forming part (220), and electrical components such as a compressor for supplying refrigerant for heat exchange with air to the auxiliary flow path part (230) may be installed.

[0323] The above-mentioned flow path forming part (220) may be provided so as to communicate with the duct module (30) and the housing (140) or drum (150) of the drying body (10) on the inside of the case (210), thereby forming a flow path through which the air of the drum (150) circulates.

[0324] The above-mentioned euro-forming portion (220) can be formed by extending in the height direction inside the case (210).

[0325] The above auxiliary flow path (230) can be placed on one side of the flow path forming part (220).

[0326] The above auxiliary flow path (230) may be provided with a height corresponding to the height of the flow path forming part (220), but may be provided with a width smaller than the width of the flow path forming part (220). As a result, the amount of fluid flowing in the flow path forming part (220) can be secured.

[0327] The auxiliary flow path (230) may be provided so as to be separated from the drying body (10) and the duct module (30) and communicate only with the outside air. Thus, the auxiliary flow path (230) may be prevented from being heated by hot air or exposed to foreign substances discharged from the drum (150). As a result, electrical components may be installed within the auxiliary flow path (230) and operate stably.

[0328] The above-mentioned euro-forming part (220) may be provided in the shape of a duct placed inside the case (210) so that air can flow.

[0329] However, in order to simplify the configuration of the drying module (20) and reduce the weight of the drying module (20), the flow path forming part (220) may be automatically formed due to the configuration of the case (210). For example, the flow path forming part (220) may be automatically formed through the arrangement of the front panel (219), the rear panel (212), the partition panel (218), and the side panel (211) forming the front of the case (210).

[0330] The above auxiliary flow path (230) can be automatically formed through the arrangement of the front panel (219), auxiliary panel (214), partition panel (218), and side panel (211).

[0331] The above auxiliary panel (214) may have multiple penetration holes installed in the height direction so that it can communicate with the outside air.

[0332] Referring again to FIG. 15(a), the case (210) may include side panels (211) forming both sides and a rear panel (212) coupled to the side panels (211) to form the rear of the case (210).

[0333] The rear panel (212) may be provided to form the back surface of the flow path forming part (220) and block the flow path forming part (220) from being exposed to the outside. In this case, the case (210) may further include an auxiliary panel (214) that is arranged on one side of the rear panel (212) to form the back surface of the auxiliary flow path part (230) and block the auxiliary flow path part (230) from being exposed to the outside.

[0334] The above auxiliary panel (214) and the above rear panel (212) can form the back surface of the case.

[0335] The case (210) may further include a detachable panel (213) that is detachably provided on the rear panel (212) to expose the internal heat exchanger to the outside. Accordingly, the heat exchanger can be cleaned or repaired or replaced by detaching only the detachable panel (213) from the rear panel (212) without detaching the entire rear panel (212) from the case (210).

[0336] The rear panel (212) may be provided with a back surface through which the heat exchanger is installed, and the detachable panel (213) may be detachably coupled to the through-hole area of ​​the rear panel (212).

[0337] Figure 16 illustrates an example of the internal configuration of the drying module.

[0338] Fig. 16(a) illustrates the internal configuration of the case (210) in the drying module from the rear, and Fig. 16(b) illustrates the internal configuration of the case (210) in the drying module from the front.

[0339] Referring to Fig. 16(a), the drying module (20) may include a heat exchanger (240) that is installed inside the case (210) and dehumidifies and heats the air supplied from the duct module (30) to generate hot air.

[0340] The above heat exchange unit (240) may include an evaporator (241) arranged in the flow path forming unit (220) to cool the air supplied from the duct module (20), and a condenser (242) to heat the air passing through the evaporator (241).

[0341] The above evaporator (241) and the above condenser (242) can be placed inside the flow path forming part (220) and can be placed in a vertical direction in the flow path forming part (220). The above condenser (242) can be placed above and spaced apart from the above evaporator (241).

[0342] The heat exchange unit (240) may further include a compressor (243) that receives refrigerant from the evaporator (241), heats it, and transfers it to the condenser (242), and an expansion valve (244) that expands the refrigerant that has passed through the condenser (242) to reduce the temperature and pressure of the refrigerant. The compressor (243) and the expansion valve (244) may be arranged inside the auxiliary flow path unit (230) and may be separated from the flow path forming unit (220).

[0343] The above heat exchange unit (240) may further include an auxiliary heat exchanger (245) connected to the condenser (241) and the evaporator (242) to exchange heat between the refrigerant and the outside air, and a switching valve (246) that selects whether the refrigerant delivered from the condenser (241) is supplied to either the expansion valve (244) or the auxiliary heat exchanger (245).

[0344] The above auxiliary heat exchanger (245) and the above switching valve (246) are also arranged inside the auxiliary flow path part (230) and can be separated from the flow path forming part (220).

[0345] The auxiliary heat exchanger (245) and the switching valve (246) may be positioned above the compressor (243), and the compressor (243) may be mounted on the bottom surface of the auxiliary flow path (230).

[0346] The above auxiliary flow path (230) may further include an auxiliary fan (231) that induces external air to come into contact with the auxiliary heat exchanger (245).

[0347] The auxiliary fan (231) may be positioned above the auxiliary heat exchanger (245). Thus, when the auxiliary fan (231) is driven, the outside air can cool the compressor (243) in the process of reaching the auxiliary heat exchanger (245).

[0348] The drying module (20) may further include a control panel (232) that provides a command to perform a drying process by controlling one or more of the auxiliary fan (231), the compressor (243), the expansion valve (244), and the switching valve (246). The control panel (232) may be installed in the auxiliary flow path (230) to prevent exposure to hot air passing through the flow path forming part (220). The control panel (232) may be arranged in a plate shape facing either the front or the rear of the auxiliary flow path (230). Accordingly, when the auxiliary fan (231) is driven, the control panel (232) may also be cooled by the outside air, and the control panel (232) may be prevented from interfering with the movement of the outside air supplied from the auxiliary flow path (230) to the auxiliary heat exchanger (245).

[0349] The auxiliary flow path (230) may further include an auxiliary partition plate (233) that blocks air passing through the auxiliary heat exchanger (245) from accessing the control panel (232). The auxiliary partition plate (233) may be arranged between the auxiliary heat exchanger (245) and the control panel (232) and may extend to an area where the auxiliary fan (231) is arranged.

[0350] Referring to Fig. 16(b), the front panel (219) forming the front of the flow path forming part (230) may be arranged in front of the flow path forming part (230) and spaced apart from the front of the auxiliary flow path part (230).

[0351] Alternatively, the case (210) may further include an additional panel (219) that connects the partition panel (218) and the side panel (211) at the rear of the front panel (219) to form the front of the euro-forming portion (230).

[0352] The following description is based on an embodiment equipped with the above-mentioned additional panel (219), but the same can be applied to an embodiment equipped with only the above-mentioned front panel (219).

[0353] The above additional panel (219) may be provided with an inlet (215) through which air passing through the duct module (30) flows into the lower portion of the euro-forming portion (220), and an outlet (216) disposed above the inlet (215) through which air passing through the condenser (242) is discharged.

[0354] The inlet (215) may be positioned at a position facing the fan receiving portion (220) at the bottom of the evaporator (241), and the outlet (216) may be positioned at a position facing the rear body (152) of the drum (150) or the inside of the housing (140) at the rear panel (114) of the cabinet (110).

[0355] Accordingly, the air discharged from the outlet of the connecting portion (322) is introduced through the inlet (215), rises by the power of the circulation fan (330), passes sequentially through the evaporator (241) and the condenser (242), is dehumidified and heated, and is discharged through the outlet (216) to be discharged into the housing (140) and the drum (150).

[0356] The above evaporator (241) can cool the air and condense moisture, and the condensed water can fall from the evaporator (241) and be collected on the bottom surface of the flow path forming part (220).

[0357] The above drying module (20) may include a drainage unit (250) that communicates with the bottom surface of the euro-forming unit (220) and discharges the condensate.

[0358] The above drainage unit (250) may include a drainage body (251) disposed on the bottom surface of the flow path forming unit (220) to collect water, and a drainage pipe (254) extending from the lower portion of the drainage body (251) to the outside of the case (210) to discharge water. Due to the drainage unit (250), water condensed in the flow path forming unit (220) may be prevented from evaporating again and flowing back into the drum (150), and the inside of the flow path forming unit (220) may be prevented from rotting.

[0359] The above drying module (20) may further include a cleaning unit that can wash away foreign substances or remaining bacteria accumulated in the evaporator (241) by spraying water on the evaporator (241), and a water supply unit (260) that supplies water to the cleaning unit.

[0360] The above cleaning unit may be provided to spray water toward the evaporator (241) from below the evaporator (241). In addition, the evaporator (241) may be arranged at an angle to increase the heat exchange area, thereby increasing the drying performance, and also to induce the water sprayed from the cleaning unit to move along the surface of the evaporator (241) to wash away foreign substances.

[0361] The above drainage unit (250) can discharge all of the water sprayed from the cleaning unit and foreign substances separated from the evaporator (241) to the outside of the drying module (20).

[0362] The above water supply unit (260) may also use water condensed in the above evaporator (241).

[0363] Alternatively, the water supply unit (260) may be provided to supply water directly from an external water source to the cleaning unit.

[0364] The above water supply unit (260) may include a water supply valve (261) that communicates with an external water supply source, and a water supply pipe (262) that is connected from the water supply valve (261) to the cleaning unit and supplies the water to the cleaning unit.

[0365] The above control panel (280) may also be provided to control the water supply valve (261).

[0366] Figure 17 is a schematic diagram showing the structure in which the auxiliary heat exchanger (245) of the clothing treatment device of the present invention is installed.

[0367] Figure 17 illustrates a state in which the switching valve (246) uses the auxiliary heat exchanger (245) as an evaporator, but the switching valve (246) can change the flow path state to a state in which the auxiliary heat exchanger is used as a condenser.

[0368] Using the auxiliary heat exchanger (245) as an evaporator may correspond to a state in which the refrigerant that has passed through the condenser (242) passes through the switching valve (246) and the expansion valve (244) and is then guided to the auxiliary heat exchanger (245), and using the auxiliary heat exchanger (245) as a condenser may correspond to a state in which the refrigerant that has passed through the condenser (242) is guided directly to the auxiliary heat exchanger (245) through the switching valve (246).

[0369] Since the garment treatment device of the present invention is equipped with a commercial dryer, it is necessary to quickly dry a large quantity of garments. To this end, the garment treatment device of the present invention may consider increasing the cross-sectional area of ​​the evaporator (241) to rapidly supply hot air from the beginning of the drying cycle, and increasing the cross-sectional area of ​​the condenser (242) to supply high-temperature hot air in the middle and end of the drying cycle.

[0370] However, if the area of ​​the evaporator (241) and the condenser (242) is increased excessively, a problem may arise in which the volume of the drying module (20) is excessively increased.

[0371] In addition, if the area of ​​the evaporator (241) is increased, it may initially help heat the compressor (243), but when the compressor (243) is operating normally, an excessive amount of heat may be supplied to the compressor (243), causing the compressor (243) to overheat.

[0372] In addition, if the area of ​​the condenser (242) is increased, it may be helpful in quickly supplying sufficient hot air at the beginning of the drying process, but if the compressor (243) is operating normally, excessive heat may be supplied to the inside of the drum (150), which may damage clothing, and the temperature may uniformly rise throughout the circulating flow path, which may cause a problem in that the coefficient of performance may decrease.

[0373] To this end, the clothing treatment device of the present invention additionally arranges the auxiliary heat exchanger (245) and the switching valve (246), so that the auxiliary heat exchanger (245) can be converted into an evaporator (241) and a condenser (242) as needed.

[0374] For example, at the beginning of the drying process, the control panel (280) can control the switching valve (246) to control the auxiliary heat exchanger (245) to be used as the evaporator (241). Specifically, the switching valve (246) can guide the refrigerant delivered from the condenser (242) to the expansion valve (244), and the refrigerant passing through the expansion valve (244) can pass through the auxiliary heat exchanger (245) and then flow into the evaporator (241).

[0375] In this process, the refrigerant absorbs heat from the outside air in the auxiliary heat exchanger (245) and then flows back into the evaporator (241) to absorb heat from the air flowing through the flow path forming part (220). As a result, the energy of the refrigerant flowing into the compressor (243) increases further, so that the time it takes for the compressor (243) to operate normally and increase the pressure of the refrigerant can be shortened.

[0376] When the compressor (243) operates normally, such as in the middle or end of the drying cycle, the control panel (280) can control the switching valve (246) to control the auxiliary heat exchanger (245) to be used as the condenser (242). Specifically, the switching valve (245) can guide the refrigerant delivered from the condenser (242) directly to the auxiliary heat exchanger (245), and the refrigerant that has passed through the auxiliary heat exchanger (245) can pass through the expansion valve (244) and then flow into the evaporator (241).

[0377] In this process, the refrigerant is heated by discharging heat from the condenser (242) to the air flowing through the flow path forming part (220), and then moves to the auxiliary heat exchanger (245) to discharge some of the remaining heat back to the outside air. As a result, the refrigerant can be introduced into the evaporator (241) with a sufficient temperature and pressure while passing through the expansion valve (244) in a state where the enthalpy has dropped significantly. As a result, the heat exchange part (240) can be prevented from overheating, and the temperature difference between the evaporator (241) and the condenser (242) can be secured to be larger, thereby preventing the coefficient of performance from decreasing.

[0378] Fig. 18 illustrates an example of the above duct module (30).

[0379] The above duct module (30) may be provided with a duct body (310) having an inlet (315) for receiving air from the drum (150) and an outlet (316) for discharging air received from the inlet (315), a circulation fan (330) that is arranged to communicate with the outlet (316) and causes air to flow in the duct module (310), and a fan receiving portion (320) that provides a space in which the circulation fan (330) is installed.

[0380] The above inlet (315) and the outlet (316) can be provided regardless of the location, such as the upper surface, lower surface, or side surface of the duct body (310), and the flow of air moving through the duct body (310) can extend in one direction, change direction at least once, or return.

[0381] The inlet (315) may be positioned to receive air from the drum (150) in a first direction, and the outlet (316) may be positioned to discharge the air received from the inlet (315) in a second direction different from the first direction.

[0382] The above duct body (310) may be provided in the form of a rectangular parallelepiped, and may have the inlet (315) provided on the first surface and the outlet (316) provided on the second surface sharing one edge with the first surface.

[0383] The above duct body (310) may include an opening (350) therein. The opening (350) may serve as a communication port through which air received from the drum (150) flows into the inlet (315) and is discharged through the outlet (316).

[0384] The above opening (350) is sufficiently provided to cross the cross-section of the air flowing through the duct body (310), and may be provided in multiple numbers.

[0385] The air discharged from the drum (150) and delivered to the duct module (30) may contain foreign substances such as lint discharged from clothing. In order to prevent air containing foreign substances from being delivered to the drying module (20) and thereby lowering the coefficient of performance (COP) of the heat exchanger (240) or deteriorating hygiene, a filter unit (4) for filtering air, which will be described later, may be provided in the opening (350).

[0386] The above filter unit (4) may be formed in multiple pieces in the above duct body (310), and the structures of the multiple filter units (4) may be provided to be identical or different from each other.

[0387] Fig. 19 shows an exploded view of a first filter (4a) as an example of the filter unit (4).

[0388] The above first filter (4a) can be exclusively used for the purpose of filtering air, as long as it is a product including a duct forming a path through which air moves, as well as the clothing treatment device (1) having the structure described above.

[0389] The first filter (4a) may be provided to include a frame portion (F) formed along the perimeter of the opening portion (350), a filter net (41) whose edge is fixed by the frame portion (F) to filter air, and a shape-maintaining portion (44) inserted between the frame portions (F) to maintain the shape of the frame (F).

[0390] The above frame portion (F) may include an inner frame (6) formed along the perimeter of the opening (350) and fixed to the duct module (30), and an outer frame (5) coupled to the inner frame (6) and exposed toward the outside of the duct module (30).

[0391] The above shape-maintaining portion (44) may be provided to extend along the perimeter of the opening (350) and be interposed between the inner frame (6) and the outer frame (5).

[0392] The above shape-maintaining portion (44) may be provided with a material having higher rigidity than at least one of the inner frame (6) and the outer frame (5) to prevent deformation of the frame portion (F).

[0393] The above-mentioned strainer (41) can provide tension to the inside of the frame portion (F) by resisting the tensile force that pulls the edge by the frame portion (F). Therefore, a torsional moment can occur in the frame portion (F) due to the tension of the strainer (41). The shape-maintaining portion (44) is provided with a material having a torsional rigidity greater than or equal to that which can resist the torsional moment occurring in the frame portion (F), thereby preventing the frame portion (F) from torsion.

[0394] Fig. 20 is a schematic diagram of the manufacturing process of the frame portion (F), and Fig. 21 is a flow chart of the manufacturing process of the frame portion (F). The manufacturing process of the frame portion (F) will be described below with reference to Figs. 20 and 21.

[0395] The above frame part (F) can be manufactured by a manufacturing method including an extrusion step (S1) of heating the material forming the frame part (F) to a high temperature and continuously extruding a product of a certain cross-section, a cutting step (S2) of cutting the material that has undergone the extrusion step (S1) to fit the length of each side of the opening (350), and a fusion step (S3) of heating and thermally fusion-bonding the ends of the material that has undergone the cutting step (S2) to correspond to the shape of the opening (350).

[0396] Accordingly, since the frame portion (F) in the form of a closed curve formed along the perimeter of the opening (350) is not produced integrally by injection molding or the like, the initial mold manufacturing cost is reduced and the range of material selection for the frame portion (F) is expanded.

[0397] In addition, since it is processed only with compressive and shear stresses, the degree of freedom of shape can be improved when a cross-section for fixing the shape-maintaining part (44) or / and the filter net (41) is formed inside the frame part (F).

[0398] A fusion line (L1) may be formed in the above frame portion (F) by fusing the ends of each material. The fusion line (L1) may not be clearly visually distinguishable.

[0399] The above fusion line (L1) can be confirmed to use a polymer different from the material constituting the frame portion (F) during the fusion process.

[0400] The above fusion line (L1) is sufficient if the end of the material that has gone through the extrusion step (S1) and the cutting step (S2) is deformed by physical force such as heat and is physically and chemically distinct from other parts in shape, structure, and properties. The above fusion line (L1) is sufficient if a person skilled in the art can recognize the characteristics generated by fusion.

[0401] The inner frame (6) and the outer frame (5) can be manufactured with different cross sections or materials.

[0402] Fig. 20(a) shows a method for manufacturing the outer frame (5), and Fig. 20(b) shows a method for manufacturing the inner frame (6).

[0403] The above outer frame (5) can be manufactured by a manufacturing method including an outer frame extrusion step (S1a), an outer frame cutting step (S2a) of cutting the material that has undergone the outer frame extrusion step (S1a), and an outer frame fusion step (S3a) of heating and thermally fusion-bonding the end of the material.

[0404] The outer frame fusion line (L11) can be formed in the outer frame (5) by the outer frame fusion step (S3a).

[0405] A magnetic coupling magnet (42) that generates magnetic force is accommodated inside the inner frame (6), and at least a portion of the duct module (30) is provided with a magnetic material that can be coupled with the magnetic coupling magnet (42), so that the inner frame (6) can be detachably fixed to the duct module (30).

[0406] Since the above inner frame (6) can accommodate the above-mentioned combined magnet (42), it can be manufactured as follows.

[0407] The inner frame (5) above can be manufactured by a manufacturing method including an inner frame extrusion step (S1b), an inner frame cutting step (S2b) of cutting the material that has gone through the inner frame extrusion step (S1b), an insertion step (S25) of accommodating the coupling magnet (42) in the cut material, and an inner frame fusion step (S3b) of heating and thermally fusion the end of the material in which the coupling magnet (42) is accommodated.

[0408] That is, in the case of an attachment target such as the inner frame (6), the coupling magnet (42) must be accommodated, so an insertion step (S25) in which the coupling magnet (42) is accommodated may be further included after the cutting step (S2).

[0409] In order to prevent detachment of the above-mentioned coupling magnet (42) and ensure attachment reliability, it is preferable that the above-mentioned coupling magnet (42) be inserted into a coupling magnet receiving groove (62) that is separately formed inside the inner frame (6), which will be described later. Therefore, the insertion step (S25) can be performed after the cutting step (S2) and before the fusion step (S3).

[0410] In the inner frame (6), the inner frame fusion line (L12) can be formed by the inner frame fusion step (S3b).

[0411] Fig. 22 shows an example of a cross-section (hereinafter, “cross-section”) in a direction perpendicular to the extrusion direction of the outer frame (5), and Fig. 23 shows an example of a cross-section (hereinafter, “cross-section”) in a direction perpendicular to the extrusion direction of the inner frame (6). Hereinafter, the characteristics of the cross-section of the outer frame (5) and the cross-section of the inner frame (6) will be described.

[0412] The inner frame (6) and the outer frame (5) are formed on a contact surface where they face each other in combination with a grooved portion (51, 61) that protrudes or sinks from the contact surface, and the inner frame (6) and the outer frame (5) can be mutually combined by fitting the grooved portions (51, 61).

[0413] At least one of the inner frame (6) and the outer frame (5) may be provided with a shape-maintaining part receiving groove (54, 64) in which the shape-maintaining part (44) is received.

[0414] The edge of the above-mentioned filter net (41) can be fixed to the frame part (F) by the pressure generated by the combination of the groove part (51, 61) and the shape-maintaining part (44) and the frame part (F).

[0415] The above groove portion may be provided with a first groove portion (61) that is formed protrudingly on one side of the inner frame (6) facing the outer frame (5) and a second groove portion (51) that is formed recessed so as to fit into the first groove portion (61) on one side of the outer frame (5) facing the inner frame (6).

[0416] As the first groove (61) is provided in a protruding form, the degree of freedom in the position and shape of the combined magnet receiving groove (62) can increase.

[0417] The inner frame (6) above can be placed relatively downstream of the air flowing through the duct module (30) compared to the outer frame (5).

[0418] The above-mentioned strainer (41) can apply an external force to the frame portion (F) in the downstream direction by the flow of air. In this case, if the first groove portion (61) is provided in a protruding shape and the second groove portion (51) is provided in a recessed shape, the force with which the groove portions (51, 61) support the strainer (41) in the upstream direction can be increased. Accordingly, the strainer (41) can be stably fixed to the frame portion (F) without being excessively stretched.

[0419] The above-mentioned groove portion (51, 61) may be provided with a plurality of protrusions protruding from the contact surface and a plurality of recessed portions matching the plurality of protrusions. The plurality of protrusions and the plurality of recessed portions may be arranged in a row along a direction transverse to the extrusion (extension) direction of the frame portion (F). The ease of manufacturing the frame portion (F) may be improved.

[0420] Preferably, the plurality of protrusions and the plurality of recesses may be arranged in a row from the inside to the outside of the frame on each side of the frame portion (F). Accordingly, the bonding force is transmitted to the filter net (41) to the greatest extent through the recessed portions (51, 61), so that the filter net (41) can be stably fixed to the frame portion (F).

[0421] The shape-retaining portion receiving grooves (54, 64) may be formed between the plurality of recessed portions and the plurality of protruding portions. Accordingly, when the shape-retaining portion (44) is received in the frame portion (F), the grooves (51, 61) are joined in the inner and outer directions of the frame portion (F), so that the shape-retaining portion (44) is prevented from coming off and can be stably fixed.

[0422] A sealing rib (52) protruding so as to be exposed to the outside of the duct module (30) may be formed around the outer circumference of the outer frame (5). The sealing rib (52) may block air from flowing through the joint between the outer circumference of the frame portion (F) and the opening (350) when the first filter (4a) is fixed to the opening.

[0423] The angle at which the sealing rib (52) protrudes from the edge of the frame portion (F) may be greater than the angle formed by the opening (350) where the first filter (4a) is mounted and the inner surface of the duct body (310). Accordingly, the sealing rib (52) and the inner surface of the duct body (310) naturally come into contact and are pressurized, and the flow of air can be efficiently blocked.

[0424] At least a portion of the outer frame (5) may be formed with a handle (53) that protrudes outward from the duct module (30) and can be gripped by a user.

[0425] The user can pull the handle (53) exposed to the outside of the duct module (30) toward the outside of the duct module (30) to separate the frame portion (F) from the opening (350). Since the user does not have to insert a finger into the narrow gap formed between the opening (350) and the outer surface of the frame portion (F) to separate the first filter (4a), usability can be improved.

[0426] The bonding force generated by the bonding of the above grooves (51, 61) is set to be greater than the bonding force with which the bonding magnet (42) is attached to the duct module (30), so that by pulling the handle (53), not only the outer frame (5) but also the inner frame (6) can be pulled out at once.

[0427] The protrusion angle and formation position of the above handle (53) may be changed depending on the position where the first filter (4a) is placed. The handle (53) may be provided so that a user of average height can hold it within the range of motion of the arm without lifting the heel or bending the waist.

[0428] The handle (53) may be provided with an anti-slip portion (531) to improve the user's usability. The anti-slip portion (531) may be provided with a groove or protrusion that fits the shape of a finger or a shape that prevents friction, and may be formed separately from the frame portion (F) and subsequently attached to the handle (53).

[0429] The above drawing 22(a) is an example of the outer frame (5) in which the handle (53) and the sealing rib (52) are formed, and the above drawing 22(b) is an example of the outer frame (5) in which the handle (53) and the sealing rib (52) are not formed.

[0430] As illustrated in the above drawing 23, the inner frame (23) may be formed with a coupling magnet receiving groove (62) capable of receiving the coupling magnet. The coupling magnet (42) may be formed of an elastic material so that it can be easily received in the coupling magnet receiving groove (62).

[0431] Figure 24 illustrates the grooves (51, 61) provided in the inner frame (6) and the outer frame (5).

[0432] As one embodiment of the present invention, the inner frame (6) is provided with a first groove (61) that is provided as a protrusion protruding from the contact surface, and the outer frame (5) is provided with a second groove (51) that is provided as a recessed portion recessed from the contact surface. This is only one embodiment of the present invention, and the protrusion and the recessed portion may be provided in a switched manner in the outer frame (5) and the inner frame (6).

[0433] For convenience of explanation, the protrusion is hereinafter referred to as the first recessed portion (61) and the depression is hereinafter referred to as the second recessed portion (51).

[0434] The above first groove portion (61) may include a first extension portion (611) extending from the contact surface, and a second extension portion (612) extending from an end of the first extension portion (611).

[0435] The shapes of the first extension portion (611) and the second extension portion (612) may be different in a cross-section perpendicular to the extension direction of the frame portion (F).

[0436] In a cross-section perpendicular to the direction in which the first groove portion (61) protrudes, it is preferable that at least a portion of the second extension portion (612) does not overlap with the first extension portion (611) based on the direction in which the first groove portion (61) protrudes. Accordingly, even if an external force is applied in a direction that separates the first groove portion (61) and the second groove portion (51) from each other while they are coupled, they can be prevented from being easily separated.

[0437] Fig. 24(a) shows an example (612a) of the second extension portion (612) formed in a round shape.

[0438] The second extension portion (612) may be provided in a circular shape with a diameter greater than the length of the extended width of the first extension portion (611).

[0439] Accordingly, at least a portion of the extended cross-section of the second extension portion (612) is provided to be larger than the extended cross-section of the first extension portion (611), so that separation of the outer frame (5) and the inner frame (6) can be prevented.

[0440] Fig. 24(b) shows an example in which the second extension portion (612) is provided in a hook shape (612b) on one side from the end of the first extension portion (611).

[0441] In the case where the second extension part (612) is provided in a hook shape (612b) through FIG. 25 below, the direction in which the second extension part (612) is bent from the first extension part (611) will be described below.

[0442] The above drawing 25 illustrates a cross-section of line D-D' that crosses the inner and outer sides of the frame portion (F) in the shape of a closed curve. For the convenience of explanation below, the direction toward the outer side of the frame portion (F) is referred to as the outer direction (R1), and the direction toward the outer side of the frame portion (F) is referred to as the inner direction (R2).

[0443] FIG. 25(a) illustrates a pair of second extension portions (612), one of the second extension portions (612) being bent in the outward direction (R1) from the first extension portion (611) and the other second extension portion (612) being bent in the inward direction (R2) from the first extension portion (611).

[0444] When the second extension portion (612) is bent from the end of the first extension portion (611) in a direction facing each other as shown in Fig. 25(a), the edge of the filter net (41) can be prevented from being separated from the frame portion (F).

[0445] For example, when the strainer (41) is pulled in an outward direction (R1) or an inward direction (R2) in which it is separated from the frame portion (F), the bent second extension portion (612) can be deformed toward the center inward of the frame portion (F) due to the elasticity of the material itself. Accordingly, the force with which the end of the second extension portion (612) binds the strainer (41) to the center of the frame portion (F) increases, so that the fixing reliability of the strainer (41) can be improved.

[0446] Fig. 25(b) illustrates a pair of second extension portions (612) bent in the outward direction (R1) from the first extension portion (611). When the second extension portion (612) is arranged as shown in Fig. 25(b), it may be advantageous in resisting the tension of the strainer net (41).

[0447] For example, when the filter net (41) filters the air inside the drum (150) and transmits force to the central portion and transmits tension in the inward direction of the frame portion (F), since the second extension portion (412) is arranged in the outward direction (R2), the force resisting buckling deformation is maximized, so that the frame portion (F) can stably support the filter net (41).

[0448] In this case, when the first groove (61) is formed as a protrusion in the inner frame (6), the second extension (612) supports the strainer (41) receiving force toward the downstream side toward the upstream side, so that the reliability of the connection between the strainer (41) and the frame part (F) can be improved.

[0449] Fig. 26 illustrates an example of the frame portion (F). Fig. 26(a) illustrates the inner frame (6) as viewed from the front of the opening (350), and Fig. 26(b) illustrates the outer frame (5) coupled to the inner frame (6).

[0450] The frame portion (F) illustrated in the above drawing 26 is an example of a rectangle in which all of the inner angles are formed at right angles and one pair of opposing sides is formed to be longer than the length of the other pair of sides.

[0451] For convenience of explanation, the length of a pair of relatively long sides is referred to as the long side (D1), and the length of the remaining pair of relatively short sides is referred to as the short side (D2).

[0452] In the above inner frame (6), the coupling magnet receiving groove (62) is formed in the above extrusion step (S1), and the coupling magnet (42) can be received in each side that has undergone the cutting step (S2) to match the length of each side of the opening (350).

[0453] When the ends of each side where the above-mentioned coupling magnets are received are fused, a certain fusion gap (G) may be formed between each end to be fused and the coupling magnets (42) so that the fusion is not hindered by the coupling magnets (42) or the bonding force is not reduced due to the fusion. Accordingly, the fusion gap (G) may be formed so that at least a portion thereof overlaps the fusion line (L1).

[0454] The above fusion gap (G) is formed at each corner of the inner frame (6), and the coupling magnet (42) can be interposed in the inner frame (6) so as to be discontinuous at the corner.

[0455] When the filter net (41) and the outer frame (5) are coupled to the inner frame (6) as described above, as shown in Fig. 26(b), the filter net (41) can be pressurized in the direction of air flow (in the direction penetrating the front of the opening (350)) while its edge is pulled by the frame portion (F). Accordingly, the frame portion (F) can receive tension in the inward direction (R2).

[0456] When the frame portion (F) receives tension in the inward direction (R2), the central portion of each side, whose rigidity is reinforced by the coupling magnet (42), can resist the tension, but the rigidity is attenuated by the coupling magnet receiving groove (62), and the portion of the fusion gap (G) where the coupling magnet (42) is not received inside cannot resist the tension of the strainer (41) and may be deformed. Therefore, the frame portion (F) may be deformed to be bent or folded based on the corner where the fusion gap (G) is formed.

[0457] In addition, when a twist occurs in each side due to the tension of the filter net (41), the twist angle is proportional to the length of the side, so the twist angle (F1) occurring in the long side (D1) may be greater than the twist angle (F2) occurring in the short side (D2).

[0458] Accordingly, the long side (D1) can be twisted and deformed as if folded based on a pair of opposing corners of the frame portion (F).

[0459] Fig. 27 illustrates an example of the shape-maintaining portion (44). Fig. 27(a) illustrates the shape-maintaining portion (44) as seen from the front of the opening (350), and Fig. 27(b) illustrates a cross-section of F-F' crossing the shape-maintaining portion (44) from the inside to the outside, forming a closed curve.

[0460] The above shape-maintaining part (44) may be provided in the shape of a round bar extending along the perimeter of the opening (350).

[0461] The above shape-maintaining part (44) may be made of a metal material and may include at least one welding line (L2) formed by welding the end portion to form a closed curve.

[0462] The above welding line (L2) may not be clearly distinguishable in appearance. However, it may be physically identified as a protruding, uneven surface due to welding, marks of polishing the uneven surface, marks of discoloration due to heat treatment, or marks of surface treatment.

[0463] Even if the above welding line (L2) is not visible externally, it can be distinguished by a density or thickness that is somewhat uneven or different from other areas. It is sufficient for the above welding line (L2) to be provided so that a person skilled in the art can recognize it as a characteristic resulting from welding.

[0464] The weld joint connecting the shape-maintaining portion (44) to the welding line (L2) may have lower strength than other portions. Therefore, the welding line (L2) is provided at a point that does not overlap the fusion gap (G) or the fusion line (L1), thereby avoiding deformation concentrated on the fusion gap (G) or the fusion line (L1).

[0465] When the above frame portion (F) is formed as a rectangle in which all of the inner angles are right angles and one pair of opposing sides is longer than the length of the other pair of sides, the welding line (L2) can be formed at a portion of the side of the frame portion (F) that is inserted into the short side (D2).

[0466] As described above, when a twist occurs in each side due to the tension of the filter net (41), the twist angle is proportional to the length of the side, and the twist angle (F1) occurring in the long side (D1) is greater than the twist angle (F2) occurring in the short side (D2). Therefore, when the welding line (L2) is formed in the short side (D2), a strong load is not applied to the welding line (L2) which is relatively weak, and thus the reliability of the strength of the shape-maintaining part (44) can be improved.

[0467] When the above opening (350) is formed in a polygonal shape, the corner portion (441) of the shape-maintaining portion (44) can be formed to be curved so as to have an R radius. Accordingly, when an external force is applied to the shape-maintaining portion (44), the load is concentrated on the corner portion (441), preventing it from breaking.

[0468] The above shape-maintaining member (44) is made of a material having at least a rigidity that can withstand the tension of the strainer (41) and a torsional rigidity that can resist the torsional moment of the frame portion (F) generated by the tension applied by the strainer (41) to the frame portion (F), thereby preventing the long side (D1) from being twisted and deformed as if folded based on a pair of opposing corners of the frame portion (F) as described above.

[0469] Figure 28 shows the frame portion (F), the filter net (41), and the shape-maintaining portion (44) being assembled.

[0470] The shape-maintaining portion (44) may be inserted into the center of the frame portion (F). That is, the length (t1) from the contact surface (P) of the outer frame (5) to the end of the outer frame (5) and the length (t2) from the contact surface (P) of the inner frame (6) to the end of the inner frame (6) may be provided to be the same, and the length from each of the contact surfaces (P) to which the shape-maintaining portion receiving grooves (54, 64) are inserted may be provided to be the same.

[0471] That is, the distance between the shape-maintaining part (44) and the outer side of the outer frame (5) and the distance between the shape-maintaining part (44) and the outer side of the inner frame (6) can be set to be the same.

[0472] When the above frame part (F) is made of the same material and the shape-maintaining part (44) extends across the center of each side of the frame part (F), deformation of the frame part (F) can be most effectively prevented and production and design can be simplified.

[0473] The first filter (4a) can be formed by an assembly step (S4) in which the filter net (41) is laminated on the outer frame (5), the shape-maintaining part (44) is inserted on the filter net (41), and the protrusion (first groove part (61)) of the inner frame (6) is fitted into the recessed part (second groove part (51)) of the outer frame (5) so that the inner frame (6) and the outer frame (5) are joined.

[0474] When the first groove (61) in the shape of the protrusion is formed in the inner frame (6), and the second groove (51) in the shape of the depression is formed in the outer frame (5), the strainer can be interposed and fixed between the outer frame (5) and the shape-maintaining part (44). When an external force in the downstream direction is applied to the strainer (41) due to the flow force of air, the groove (51, 61) of the frame part (F) and the shape-maintaining part (44) support the strainer (41) in the upstream direction, so that the strainer (41) is not excessively stretched and can be stably fixed to the frame part (F).

[0475] Figure 29 shows the first filter (4a) as seen from the front of the opening (350).

[0476] The above duct module (30) may be equipped with a magnetic sensor (314) to be described later for detecting the strength of a magnetic field, etc. Accordingly, the frame portion (F) may accommodate a magnetic source (43) whose magnetic signal is detected by the magnetic sensor (314) to detect whether the filter unit (4) is attached to the duct module (30).

[0477] The handle (53) and the magnetic field source (43) may be formed or accommodated in at least a portion of the frame portion (F). FIG. 29 illustrates an example in which the magnetic field source (43) is accommodated in the upper center of the frame portion (F) and the handle (53) is formed on the left side of the frame portion (F).

[0478] With reference to the above Fig. 29, Figs. 30 to 32 illustrate cross-sections crossing the inner side to the outer side of the frame portion (F). Fig. 30 illustrates a cross-section of A-A' where the handle (53) and the magnetic field source (43) are not formed, Fig. 31 illustrates a cross-section of B-B' where the magnetic field source (43) is accommodated, and Fig. 32 illustrates a cross-section of C-C' where the handle (53) is accommodated. This is merely one embodiment of the present invention, and the handle (53) and the magnetic field source (43) may not be formed or may be formed to overlap.

[0479] The above drawing 30 shows the inner frame (6) in which the coupling magnet (42) is received and the first groove (61) is formed to protrude from the contact surface (P), the shape-maintaining part (44) laminated on the inner frame (6), the strainer (41) laminated on the shape-maintaining part (44), and the outer frame (5) in which the second groove (51) is formed to be sunken from the contact surface (P) laminated on the strainer (41).

[0480] The frame part (F) is joined by the shape of the first groove part (61) and the second groove part (51), and the filter net (41) can be fixed by the pressure of the shape-maintaining part (44) and the frame part (F).

[0481] The above is one example, and the protrusion and depression directions of the first groove portion (61) and the second groove portion (51) can be switched at each contact surface (P), and the filter net (41) can be fixed by the pressure of the shape-maintaining portion (44) and the inner frame (6).

[0482] Since the above-mentioned filter net (41) is tightly pressed by the frame part (F) and the shape-maintaining part (44), it can aesthetically convey to the user that the first filter (4a) has a solid strength suitable for commercial use.

[0483] Figure 31 illustrates the magnetic field source (43) being fixed to the inner frame (6). The inner frame (6) may be provided with a magnetic field source receiving groove (63) in which the magnetic field source (43) can be received.

[0484] The above magnetic field source receiving groove (63) can replace a part of the first groove (61) and protrude from the contact surface (P) to fit into the second groove (51) of the outer frame (5).

[0485] Accordingly, even if the inner frame (6) is extruded in bulk, the magnetic field source (43) can be accommodated through a process such as cutting only a portion of the first groove (61) as a post-processing, so that the production cost can be reduced.

[0486] Figure 32 shows the handle (53) and the sealing rib (52) formed on the outer frame (5).

[0487] As described above, the protrusion angle and formation position of the handle (53) can be changed depending on the position where the first filter (4a) is placed.

[0488] It may be provided so that a user of average height can hold the handle (53) within the range of motion of the arm without lifting the heel or bending the waist.

[0489] For example, when the lower part of the first filter (4a) is close to the ground, the first filter (4a) may be provided on the upper or side of the first filter (4a) in consideration of the user's availability, and a protruding angle may be formed so as to be biased toward the inside of the opening (350) to prevent collision with the duct module (30) in which the first filter (4a) is accommodated.

[0490] For ease of production, the handle (53) may be formed and attached separately from the outer frame (5).

[0491] As described above, the angle at which the sealing rib (52) protrudes from the outer edge of the outer frame (5) may be greater than the angle formed by the opening (350) in which the filter module (4a) is mounted and the inner surface of the duct body (310). Accordingly, the sealing rib (52) and the inner surface of the duct body (310) naturally come into contact and are pressurized, and the flow of air can be efficiently blocked.

[0492] The above sealing rib (52) may be formed only on a part of the outer frame (5), and for ease of production, the sealing rib (52) may be formed separately from the outer frame (5) and attached.

[0493] Fig. 33 illustrates a second filter (4b) as another embodiment of the filter unit (4), and Fig. 34 illustrates an exploded view of the second filter (4b). The second filter (4b) will be described below with reference to Figs. 33 and 34.

[0494] The above second filter (4b) can be exclusively used for the purpose of filtering air, as long as it is a product that includes a duct forming a path through which air moves, as well as the clothing treatment device (1) having the structure described above.

[0495] The second filter (4b) may include a filter body (8) having an opening formed on the inner surface, a filter net (41) that shields the opening, and a panel portion (9) that is exposed to the outside of the duct body (310) and receives external force from the user.

[0496] The above second filter (4b) may be provided to be slidably introduced and withdrawn into the duct body (310).

[0497] When the second filter (4b) is introduced through the front of the duct body (310), the filter body (8) is provided with a flange portion (85) extending in the front-back direction, and the duct body (310) is provided with a support portion (72) that supports the flange portion (85) described later to assist introduction and withdrawal of the filter body (8), so that the filter body (8) can be easily introduced into the duct body (310).

[0498] The above support member (72) is formed to be sunken to a predetermined depth so that the flange member (85) can be inserted a predetermined distance and maintained in a fixed state, thereby preventing the filter body (8) from being removed from the duct body (310) arbitrarily or by vibration.

[0499] The flange portion (8) may include a flat portion (852) extending parallel to the direction in which the filter body (8) is introduced, and an inclined portion (851) extending forwardly and obliquely from the front end of the flat portion. The inclined portion (851) may be provided to interfere with the support portion (72) more than the flat portion (852). Therefore, the filter body (8) may not be withdrawn contrary to the user's intention. In addition, when the user introduces the filter body (8) into the duct body (310), the inclined portion (851) interferes with the support portion (72) and transmits an increased reaction force, so that the user can easily confirm the introduction point.

[0500] Of course, the filter body (8) may be provided with a rotating member (not shown) including a wheel that can rotate at the position where the flange portion (8) is formed and an axis coupled to the center of the wheel. Similarly to the case where the flange portion (8) is provided, the support portion (72) may be formed by being recessed to a predetermined depth so that one side of the rotating member can be inserted and moved. Accordingly, the filter body (8) can be withdrawn and introduced from the duct body (310) while the wheel rotates within the support portion (72).

[0501] The above filter body (8) includes a limiting rib (86) that is restricted from moving upward by the support member (72) on the upper portion of the flange member (85), so that the filter body (8) can be prevented from being separated upward by the operation of the dryer (1).

[0502] The filter body (8) may be provided with a fixed rib (84) extending in a grid manner from the inner surface of the filter body (8) to cross the opening. The fixed rib (84) may include a first fixed rib (84a) extending in a first direction, and a second fixed rib (84b) provided perpendicular to the first fixed rib (84a).

[0503] The above-mentioned filter net (41) can be fixed so that the inner surface of the filter body (8) and the edge of the fixed rib (84) are in contact. Accordingly, the filter net (41) is prevented from being deformed by the direction of air flow, thereby improving the reliability of the filtration performance and conveying structural strength to the user, thereby increasing satisfaction.

[0504] The above filter body (8) is provided in multiple pieces, and the multiple filter bodies (8) can be arranged in the width direction to form the above filter body (8).

[0505] The above drawings 33 and 34 illustrate an example in which the filter body (8) is provided with a first filter body (8a) and a second filter body (8b).

[0506] The first filter body (8a) and the second filter body (8b) may each include a joint surface (87) that is in contact with one another, a side surface (83) in which the flange portion (85) is provided, a front surface (81) in contact with the panel portion (9), and a rear surface (82) that connects the rear end of the joint surface (87) and the rear end of the side surface (83) and forms the rear of the filter body (8).

[0507] The above second filter (4b) is introduced through the front of the duct body (310), and the rear side (82) can be in contact with the duct body (310).

[0508] The rear surface (822) may be provided with an insertion surface (821) that is inclined in the height direction.

[0509] As described later, the duct body (310) is provided with a mounting surface (73) that is provided to be in contact with the insertion surface (821) when the second filter (4b) is fully inserted into the duct body (310), and the mounting surface (73) may be provided to conform to the insertion surface (821).

[0510] Since the above-mentioned mounting surface (73) is provided at an angle, the contact area between the filter body (8) and the duct body (310) increases, so that the sealing effect of the joint between the filter body (8) and the duct body (310) can be enhanced. Accordingly, air not filtered by the filter body (8) can be minimized from being discharged through the outlet (316).

[0511] The second filter (4b) receives air from the upper rotor and discharges it downward, and the insertion surface (821) can be inclined so that the upper end is positioned further back than the lower end. Accordingly, the area of ​​the opening of the filter body (8) can be increased, thereby improving the air filtration efficiency. In addition, the area of ​​the filter body (8) in contact with the duct body (310) can be reduced, thereby improving the intake and exhaust sensation.

[0512] The above panel portion (9) may include a grip portion (911) that is provided so that it can be gripped by a user or an external force can be transmitted.

[0513] The above panel portion (9) may be provided with a first panel (91) exposed to the outside of the duct body (310), and a second panel (92) arranged at the rear of the first panel (91). Accordingly, the self-weight of the panel portion (9) may be reduced, thereby preventing the filter body (8) from sagging or the panel portion (9) from being separated from the filter body (8). In addition, a separate component, etc. may be inserted through the gap between the first panel (91) and the second panel (92).

[0514] The above grip portion (911) may be provided in a groove shape that is inserted from the front to the rear of the first panel (91), and a grip insertion portion (912) through which the grip portion (911) can penetrate may be formed in the second panel (92).

[0515] A grip receiving groove (812) that is inserted along the grip portion (911) is provided on the front surface (81) of the filter body (8), so that sufficient space can be secured for the user to grip the grip portion (911).

[0516] The front (81) above is provided with a front opening groove (811) whose lower end is bent upward in a portion that does not interfere with the grip portion receiving groove (812), so that the user can easily pull out the second filter (4b) by a certain distance by gripping the grip portion (911) of the panel portion (9), and then insert a hand into the lower end of the panel portion (9) to pull the rear of the panel portion (9) forward and pull it out.

[0517] Fig. 35 shows a filter support (7) mounted in the opening (350) to support the filter unit (4).

[0518] The above duct body (310) may include the filter support member (7) so that the filter unit (4) can be easily fixed to the opening (350). The filter support member (7) may be fixed to the duct module (310) and may be formed in a structure in which the filter unit (4) is installed.

[0519] Fig. 35(a) shows an example of the filter support (7) that supports a filter that is detachably attached to the duct body (310) such as the first filter (4a), and Fig. 35(b) shows an example of the filter support (7) that supports the second filter (4b).

[0520] The filter support member (7) illustrated in the above drawing 35(a) may be formed with a bending portion (71) at the end of each side. Accordingly, the frame member (F) can be stably supported on the filter support member (7) by the bending portion (71).

[0521] The above-mentioned bending portion (71) may be formed only on a part of the filter support portion (7). For example, if the angle formed between one side of the filter support portion (7) where the bending portion (71) is formed and the inner surface of the duct body (310) is less than 90°, the bending portion (71) may be omitted because separation of the filter unit (1) may be hindered.

[0522] Preferably, the above-mentioned bending portion (71) can be bent at an angle that does not limit the path along which the filter body (4) is separated.

[0523] The above filter support member (7) is made of a magnetic material so that the frame member (F) containing the combined magnet (42) can be easily attached and detached.

[0524] In the above drawing 35(b), the support part (72) may be formed to support the flange part (85) or the rotating member provided at the position where the flange part (85) is formed.

[0525] The above support part (72) may include a lower support part (721) that supports the flange part (85) or the rotating member upward, an upper support part (723) that supports the flange part (85) or the rotating member downward, and a connecting surface (722) that connects the lower support part (721) and the upper support part (723).

[0526] The above connecting surface (722) forms the outer surface of the filter support member (7), and the upper support member (723) and the lower support member (721) may be provided in a shape that protrudes toward the inside of the filter support member (7) from one end and the other end of the connecting surface.

[0527] The above support member (72) is formed in a shape that is sunken to a predetermined depth as described above, so that at least a portion of the flange member (85) and the rotating member are received in the support member (72) and maintained in a fixed state, thereby preventing the filter body (8) from being removed from the filter support member (7).

[0528] The above filter support member (7) may include a mounting surface (73) on which the insertion surface (821) is mounted on the rear surface connecting the rear ends of both sides where the support member (72) is formed.

[0529] Since the above-mentioned mounting surface (73) is formed to be inclined to match the above-mentioned insertion surface (821), the contact area between the above-mentioned insertion surface (821) and the above-mentioned mounting surface (73) is increased, so that the joint between the above-mentioned filter support portion (7) and the above-mentioned filter body (8) is effectively shielded, and thus the filtration reliability of the above-mentioned filter unit (4) can be improved.

[0530] Figure 36 illustrates the duct module (30) equipped with the first filter (4a) and the second filter (4b).

[0531] The above filter unit (4) can be arranged to obliquely cross the flow cross-section of air that flows in through the inlet (315) in the first direction and is discharged toward the outlet (316) located in the second direction, or to vertically cross the direction in which the air flows.

[0532] The above inlet (315) is arranged on the upper surface of the duct body (310) to receive air from the drum (150) downward, and the above outlet (316) is arranged at the rear of the duct body (310) to receive the air backward.

[0533] In the case described above, the filter unit (4) may be arranged parallel to the ground so as to be perpendicular to the direction of air flow transmitted downward from the inlet (315), may be arranged in a direction perpendicular to the direction of air flow discharged rearward through the outlet (316), or may be arranged so as to be inclined in the height direction within the duct body (310).

[0534] The filter unit (4) may be positioned at the upper and lower ends that are in contact with the duct body (310), with the upper end positioned further back than the lower end. In this case, the area of ​​the filter unit (4) that is in contact with air may be increased, thereby improving filtration efficiency.

[0535] The lower end of the filter unit (4) may be provided to be spaced apart from the front of the duct body (310). Accordingly, the filter unit (4) can be prevented from being detached or separated due to interference with the cover panel (112) attached to the front of the duct body (310).

[0536] In addition, when the magnetic field source (43) is accommodated in the periphery of the filter unit (4), the installation of the magnetic sensor (314) in the duct body (310) can be facilitated.

[0537] The above duct body (310) may be provided in a hexahedron, and the inlet (315) may be provided on the upper surface, and the outlet (316) may be provided on the side that shares one edge with the upper surface.

[0538] The upper part of the filter unit (4) can be in contact with the rear surface of the duct body (310), and the lower part of the filter unit (4) can be in contact with the lower part of the duct body (310).

[0539] The upper end of the filter unit (1) may be provided to be spaced apart from the upper surface of the duct body (310). In this case, additional components may be installed on the upper surface of the duct body (310), or other components such as filters may be arranged, thereby increasing space utilization.

[0540] The above filter unit (4) can be formed on one side of the upper surface where the inlet (315) is provided and the side surface where the outlet (316) is provided, which do not touch each other, as a pair of edges. In this case, the filtration efficiency of the filter unit (4) can be maximized.

[0541] The above inlet (315) may be arranged to be biased toward the front of the upper surface of the duct body (310).

[0542] The discharge port (1411) of the bottom surface (141) of the drum (150) functions as the inlet port (315), and the rear of the upper surface of the duct body (310) is in contact with the bottom surface (141), and the inlet port (315) is formed at the front, so that a process such as separately manufacturing and joining the upper surface of the duct body (310) can be omitted.

[0543] The filter unit (4) may be disposed at the upper and lower ends that are in contact with the duct body (310), such that the upper end may be disposed further forward than the lower end. Therefore, when the cover panel (112) is separated, the bottom surface of the duct body (310) may be exposed. Accordingly, it may be easy to clean foreign substances accumulated in the duct body (310) that are detached from the filter unit (4) by the operation of the dryer (1) or by gravity. In the above FIG. 36, the second filter (4b) is disposed to vertically cross the cross-section of the air flowing in the first direction through the inlet (315), and the first filter (4a) is disposed to obliquely cross the cross-section of the air flowing in the second direction, which is different from the first direction, toward the outlet (316) after being filtered through the second filter (4b).

[0544] More specifically, the second filter (4b) is provided on the upper surface of the duct body (310) to filter air moving downward from the drum (150), and the first filter (4a) is arranged below the second filter (4b) to filter air filtered by the second filter (4b) and moving toward the rear of the duct body (310) again.

[0545] When the second filter (4b) is provided on the upper surface of the duct body (310), the lower end of the first filter (4a) may be provided to be spaced apart from the front surface of the duct body (310) so that an installation space for the second filter (4b) can be secured. In this case, the insertion surface (821) and the mounting surface (73) may also be formed at positions that do not interfere with the first filter (4a).

[0546] As described above, when the rear of the upper surface of the duct body (310) is in contact with the bottom surface (141) and the inlet (315) is formed in the front, the second filter (4b) is provided to completely shield the upper surface of the duct body (310), so that the reliability of filtration of air flowing in from the inlet (315) can be guaranteed.

[0547] The above circulation fan (330) may be arranged to be offset to either the left or right side of the duct body (310) or the fan receiving portion (320). As a result, the area of ​​the vortex or dead zone where air does not flow can be reduced compared to when the circulation fan (330) is arranged in the center of the duct body (310) or the fan receiving portion (320).

[0548] Accordingly, the outlet (316) communicating with the circulation fan (330) may also be arranged to be biased toward one side of the rear of the duct body (310).

[0549] The first filter (4a) includes an upper portion and a lower portion that are in contact with the duct body (310), and the upper portion may be positioned rearward relative to the lower portion and inclined in the height direction. At this time, the magnetic sensor (314) may be provided to detect the magnetic field source (43) when the first filter (4a) is introduced through the inlet and the lower portion of the first filter (4a) is in contact with the duct body (310).

[0550] Preferably, the magnetic field source (43) is disposed at a relatively lower portion of the first filter (4a), and the magnetic sensor (314) may also be disposed on a lower side or bottom surface side of the duct module (30). Therefore, the mounting of the first filter (4a) can be detected only when the first filter (4a) is positioned so as to be in close contact with the lower portion of the duct body (310). Accordingly, unfiltered air can be prevented from flowing through the opening gap at the lower portion of the first filter (4a).

[0551] In the case where inspection, replacement, and cleaning of the filter unit (4) is required in the duct module (30) equipped with the filter unit (4) as shown in Fig. 36(a), the user can slide and pull out the second filter (4b) from the duct body (310) and separate the first filter (4a) in the upper direction where the second filter (4b) was equipped, as shown in Fig. 36(b). Therefore, access to the filter unit (4) can be easily achieved without separating the duct module (310).

[0552] When the difference between the pressures measured by the first pressure sensor (PS1) and the second pressure sensor (PS2) exceeds a reference value, a clogging of the first filter (4a) is detected, and the first filter (4a) can be separated from the duct body (310) for cleaning or replacement of the first filter (4a). At this time, a relatively large amount of foreign substances are attached to a surface of the first filter (4a) facing upward, and when the first filter (4a) is pulled out upward, the scattering of the accumulated foreign substances due to the movement that occurs when the first filter (4a) is pulled out can be minimized.

[0553] As described above, the circulation fan (330) may be provided so as to be spaced apart from the bottom surface of the duct body (310) by a predetermined distance. Accordingly, the occurrence of vortex or the like due to the air discharged downward from the inlet (315) of the duct body (310) colliding with the bottom surface of the duct body (310) can be minimized. At least one of the first pressure sensor (PS1) and the second pressure sensor (PS2) may be provided to measure the pressure of a portion spaced apart from the bottom surface of the duct body (310) by a predetermined distance or more.

[0554] The above circulation fan (330) may be arranged to be offset to either the left or right side of the duct body (310) or the fan receiving portion (320). As a result, the area of ​​a vortex or a dead zone where air does not flow can be reduced compared to when the circulation fan (330) is arranged in the center of the duct body (310) or the fan receiving portion (320). In this case, at least one of the first pressure sensor (PS1) and the second pressure sensor (PS2) may be provided with a pressure of the left or right side of the duct body (310) to which the circulation fan (330) is offset, so that the reliability of sensing can be improved.

[0555] At least one of the first pressure sensor (PS1) and the second pressure sensor (PS2) can measure the pressure at a portion where the inlet (315) provided on the upper surface of the duct body (310) extends in the vertical direction. In addition, at least one of the first pressure sensor (PS1) and the second pressure sensor (PS2) can measure the pressure at a portion where the outlet (315) extends in the front-back direction. Therefore, error factors due to interference between the inner wall of the duct body (310) or other components can be minimized.

[0556] The second filter (4b) above, like the first filter (4a), is also equipped with a magnetic field source (43) detected by the magnetic sensor (314), so that whether the second filter (4b) is attached or detached can be detected.

[0557] The above magnetic sensor (314) may be provided in multiple numbers so as to detect each of the filter units (4) provided in multiple numbers, such as the first filter (4a) and the second filter (4b), and it is sufficient as long as it is provided to detect magnetic force regardless of the type, such as a Hall element, a magnetic resistance element, or an optical fiber.

[0558] The magnetic sensor (314) can detect the magnetic field source (43) of the second filter (4b) when the rear surface (82) or the insertion surface (821) of the second filter (4b) that is in contact with the duct body (310) is in contact with the duct body (310).

[0559] Preferably, the magnetic field source (43) is positioned relatively rearwardly of the second filter (4b), and the magnetic sensor (314) may also be positioned on the rear surface side of the duct body (310). Therefore, the mounting of the second filter (4b) can be detected only when the second filter (4b) is positioned so as to be in close contact with the rear surface of the duct body (310). Accordingly, unfiltered air can be prevented from flowing through the gap between the rear surface of the second filter (4b) and the opening.

[0560] The present invention may be implemented in various modified forms, and the scope of the invention is not limited to the above-described embodiments. Therefore, if a modified embodiment includes elements of the claims of the present invention, it should be considered to fall within the scope of the present invention.

Claims

1. In a filter unit that filters air, A frame part comprising an inner frame and an outer frame coupled to the inner frame; A filter net fixed by the combination of the inner frame and the outer frame; and A filter unit characterized by including a shape-maintaining member inserted between the inner frame and the outer frame to maintain the shape of the frame portion.

2. In paragraph 1, The above shape-maintaining part is, A filter unit characterized in that it is equipped with a material having higher rigidity than the frame portion to prevent deformation of the frame portion.

3. In paragraph 1, A filter unit characterized in that the frame part is provided with a coupling magnet that generates magnetic force inside so that it can be attached to and detached from an object.

4. In paragraph 3, The above inner frame includes a coupling magnet receiving groove in which the coupling magnet is received, A filter unit characterized in that the above-mentioned coupling magnet is accommodated in the coupling magnet accommodation groove so as to be spaced apart based on the corners connecting each side of the inner frame and the outer frame.

5. In paragraph 3, A filter unit characterized in that the above-mentioned combined magnet is made of an elastic material.

6. In paragraph 1, A filter unit in which the shape-maintaining portion is made of a metal material and includes at least one welding line formed by welding an end portion to form a closed curve.

7. In paragraph 6, At the corner connecting each side of the inner frame and the outer frame, a fusion line is formed by fusing the ends of the two sides forming the corner. The above shape-maintaining portion includes at least one welding line formed by welding the end portion to form a closed curve, A filter unit characterized in that the welding line is formed at a point where it does not interfere with the fusion line when the shape-maintaining part is inserted into the frame part.

8. In paragraph 1, A grooved portion that protrudes or sinks from the contact surface is formed on the contact surface where the inner frame and the outer frame face each other. A filter unit characterized in that the outer frame is joined to the inner frame by the shape of the groove portion.

9. In paragraph 8, Among the above grooves, the protrusion formed by protruding from the contact surface is: a first extension extending from the above contact surface; and A filter unit including a second extension portion extending from an end of the first extension portion with a shape at least partially different from that of the first extension portion.

10. In paragraph 9, In a cross-section perpendicular to the direction in which the protrusion protrudes from the above contact surface, A filter unit characterized in that at least a portion of the cross-section of the second extension does not overlap with the cross-section of the first extension with respect to the protrusion direction.

11. In paragraph 9, A filter unit, characterized in that, in a cross-section perpendicular to the direction in which each side of the frame extends, an end of the second extension portion extending from an end of the first extension portion is formed to be round.

12. In paragraph 9, A filter unit, characterized in that in a cross-section perpendicular to the direction in which each side of the frame extends, the second extension portion is provided in a hook shape on one side of an end of the first extension portion.

13. In paragraph 8, A filter unit characterized in that a shape-maintaining part receiving groove for receiving the shape-maintaining part is formed in at least one of the inner frame and the outer frame.

14. In paragraph 13, The above grooves are provided in multiple numbers, and the plurality of grooves are arranged in a row from the inside to the outside of the frame on each side of the frame. A filter unit characterized in that the shape-maintaining portion receiving groove is formed between a plurality of the groove portions.

15. In paragraph 1, A filter unit characterized in that the shape-maintaining member is made of a material having a torsional rigidity greater than that which resists the torsional moment of the frame generated by the tension applied by the filter net.

16. In paragraph 1, A filter unit characterized in that the frame portion accommodates a magnetic field source whose magnetic signal is detected by a magnetic sensor.

17. In paragraph 16, A grooved portion that protrudes or sinks from the contact surface is formed on the contact surface where the inner frame and the outer frame face each other. The inner frame and the outer frame are combined by the shape of the above groove portion, A filter unit characterized in that the magnetic field source is inserted to replace a part of the groove and is fixed between the inner frame and the outer frame.

18. In paragraph 1, At least a portion of the edge of the outer surface of the outer frame is formed with a sealing rib that protrudes outward, A filter unit characterized in that the sealing rib blocks air from flowing through the joint between the outer surface of the frame and the object when the frame portion is fixed to the object.

19. In paragraph 1, A filter unit characterized in that at least a portion of the outer frame has a handle portion formed that protrudes outside the duct and is gripped by a user.

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