Drum washer-dryer

Abstract

An outer tank cover (4) covering a front side of an outer tank, a door seal (10) for water-tightly sealing a door (9) and the outer tank cover (4), and a drain hole (16) provided in a lower portion near a connecting portion of the outer tank cover (4) and the door seal (10). The door seal (10) has an outer side protruding portion (11B) provided on an outer side in a radial direction with respect to a rotation axis of a drum (3) and having a convex shape toward the door (9) side, and an inner side recessed portion (12B) provided on an inner side in the radial direction than the outer side protruding portion (11B) and having a concave shape toward the door (9) side. The inner side recessed portion (12B) has an outer side portion on an outer side in the radial direction, an inner side portion (12b) on an inner side in the radial direction, and a vertex portion (12c) on a boundary of the outer side portion and the inner side portion (12b). The inner side portion (12b) has a portion not protruding more to the outer tank cover (4) side than the vertex portion (12c).

Description

Technical Field

[0001] This invention relates to a drum-type washer-dryer. Background Technology

[0002] Traditional drum-type washer-dryers consist of a tub for holding clothes and a door that opens and closes easily for removing clothes. A water seal is used to maintain a water seal between the door glass and the tub. This door seal typically has three functions and corresponding shapes. First, to prevent water from leaking out of the machine from between the door glass and the tub, it has a rib-shaped water seal that protrudes inward to ensure even contact with the outer circumference of the door glass. Second, to prevent clothes from entering the gap between the door seal and the tub during operation, the inner circumference of the door seal has a protrusion to prevent clothes from getting caught. Third, connecting the fixedly supported housing and the elastically supported, vibrating tub, it has a serpentine-shaped vibration-absorbing part to follow the amplitude of the tub's vibration during operation. Thus, the door seal can easily become complex due to its multiple functions and associated shapes. Furthermore, in washer-dryers, lint generated in the tub during drying may adhere to the protrusions or vibration-absorbing parts used to prevent clothes from getting caught after the machine ends. If left unattended, this can lead to poor drying; therefore, users need to remove the lint after each run. In view of this, according to Patent Document 1, there is a washing and drying machine that has a cleaning mechanism. The cleaning mechanism has a water supply part and a spray nozzle at the top of the tank to spray cleaning water onto the inner circumference of the door seal to rinse the cotton lint.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2013-85850 Summary of the Invention

[0006] The problem the invention aims to solve

[0007] In conventional washer-dryers, to ensure the vibration absorption section, the gap between the door seal and the tub is generally located near the tub side. To prevent clothes from getting caught in this gap, a protrusion designed to prevent clothes from getting stuck is placed as close to the tub as possible to reduce the gap. However, as a result, airflow within the tub during drying operation tends to stagnate in the door glass, the protrusion designed to prevent clothes from getting stuck, and the tub and vibration absorption section, contributing to lint buildup. Lint accumulates gradually when the user doesn't clean it, and further increases by absorbing water from the washing and rinsing processes. A drain hole communicating with the tub is located near the lower part of the connection between the tub and the door seal to prevent water flowing into the vibration absorption section of the door seal from accumulating. However, if lint increases, it can clog this drain hole, affecting drainage performance and causing issues related to insufficient drying and prolonged operating time during the drying process.

[0008] Furthermore, according to Patent Document 1, a washer-dryer is known to have a cleaning mechanism that sprays cleaning water onto the inner circumference of a door seal to rinse lint. However, because the spray nozzles are located on the outer periphery of the protrusion used to prevent the laundry from getting stuck, the cleaning water does not extend to the inner circumferential surface of the water seal and the interior of the protrusion, thus limiting the cleaning effect to only the lint in the vibration-absorbing part. Additionally, for example, if multiple spray nozzles are provided circumferentially across the protrusion to prevent the laundry from getting stuck in order to evenly distribute the cleaning water around the inner circumference of the door seal, the water supply pressure at each nozzle may be reduced, potentially failing to adequately ensure cleaning performance.

[0009] The present invention is proposed to solve the above-mentioned problems, and its purpose is to provide a drum-type washer-dryer that can suppress the adhesion and accumulation of cotton lint.

[0010] The invention is characterized by comprising: a housing; a door that is freely openable and closable and mounted on the housing; a door glass that is disposed on the door and formed in a convex shape; an outer groove that is elastically supported within the housing and stores water; a freely rotatable inner groove disposed within the outer groove and capable of holding clothing; a drying mechanism for drying clothing in the inner groove; an air supply mechanism for supplying air to the outer groove and the inner groove; a circulating air duct connecting the outer groove and the air supply mechanism; an outer groove cover that covers the front side of the outer groove; a door seal that provides a water seal for the door and the outer groove cover; and a drain hole. It is disposed near the lower part of the connection between the outer groove cover and the door seal. The door seal has a convex part and a concave part. The convex part is disposed radially outward relative to the rotation axis of the inner groove and is convex towards the door side. The concave part is disposed radially inward than the convex part and is concave towards the door side. The concave part includes: an outer part located radially outward; an inner part located radially inward; and a vertex part located at the boundary between the outer part and the inner part. The inner part has a portion that does not protrude further towards the outer groove cover than the vertex part.

[0011] The effects of the invention

[0012] According to the present invention, a drum-type washer-dryer that can suppress the adhesion and accumulation of cotton lint can be provided. Attached Figure Description

[0013] Figure 1 This is a structural diagram showing the internal structure of the drum-type washer-dryer according to the first embodiment.

[0014] Figure 2 It is a cross-sectional view showing the upper part of the groove containing the door seal.

[0015] Figure 3 This is a cross-sectional view showing the upper part of the door seal.

[0016] Figure 4 It is a cross-sectional view showing the lower part of the groove containing the door seal.

[0017] Figure 5 yes Figure 4 Enlarged view of part A.

[0018] Figure 6 This is a cross-sectional view showing the lower part of the door seal.

[0019] Figure 7 It is a cross-sectional view of the lower part of the trough showing the airflow during drying operation.

[0020] Figure 8 This is a cross-sectional view showing the upper part of the groove containing the door seal according to the second embodiment.

[0021] Figure 9 yes Figure 8 The front view of the injection nozzle.

[0022] Figure 10 This is a cross-sectional view showing the upper part of the groove containing the door seal according to the third embodiment.

[0023] Figure 11 yes Figure 10 The front view of the injection nozzle.

[0024] Figure 12 This is a perspective view showing the door seal according to the fourth embodiment.

[0025] Figure 13 This is a perspective view showing the door seal according to the fifth embodiment. Detailed Implementation

[0026] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the following embodiments, and various modifications and applications are included within the scope of the technical concept of the present invention. Furthermore, the following will use… Figure 1 The directions shown are for illustrative purposes only. Additionally, the direction perpendicular to the paper is the left-right direction.

[0027] (First Implementation)

[0028] Figure 1 This is a structural diagram showing the internal structure of the drum-type washer-dryer according to the first embodiment.

[0029] like Figure 1 As shown, the drum washer-dryer 100 has a frame on the upper part of the base 1h, mainly composed of a steel plate, side panels (not shown) made of resin molding, and reinforcing members (not shown). A front cover 1a, a lower front cover 1b, and an upper cover 1c made of resin molding are then mounted on this frame to form the housing 1 (box). Additionally, a door 9 is provided on the front cover 1a for opening and closing when taking out and placing laundry (clothes).

[0030] Inside the housing 1, a water storage tank 2 is located approximately in the center. The outer tank 2 is formed into a bottomed cylindrical shape and is elastically supported by a plurality of shock absorbers (not shown) located at the bottom. An outer tank cover 4 is installed on the outer tank 2 through a front opening (door 9 side) formed on the front side. The rear side of the outer tank cover 4 is connected to the front opening of the outer tank 2, and a circular opening 4a for removing and placing laundry is formed on the front side.

[0031] Additionally, an inner drum 3 (inner drum) is rotatably supported inside the outer drum 2. The drum 3 is formed into a bottomed cylindrical shape to hold laundry (clothes), with the opening 3a located on the front side. Furthermore, the rotation axis O of the drum 3 is inclined such that the front side is higher than the rear side. Alternatively, the rotation axis of the drum 3 can also be configured to be approximately horizontal.

[0032] Door 9 is a component on which door glass 9a is fixed to a resin door frame 9b, and is mounted on housing 1 by means of hinges (not shown). Furthermore, the door frame 9b of door 9 abuts against the periphery of a circular opening 1s formed in housing 1. Additionally, door glass 9a is configured to form a convex shape so as to enter the inside (rear) side of the opening 1s in housing 1.

[0033] A fluid balancer 3b is provided on the outer periphery of the opening 3a of the drum 3 to reduce vibrations caused by the imbalance of the laundry during spin-drying (see reference). Figure 2 ).

[0034] Additionally, multiple lifters (not shown) are provided inside the drum 3 to lift the laundry. Furthermore, the drum 3 is directly connected to a motor (not shown) for driving the drum. Additionally, the drum 3 has multiple small holes (not shown) on its cylindrical sidewalls for centrifugal spin-drying and ventilation.

[0035] A rubber door seal (also called a bellows) 10 made of elastomer is installed on the outer casing 4. This door seal 10 is generally annular, with its inner (rear) opening edge mounted on the opening 4a of the outer casing 4, and its front (front) opening edge mounted on the edge of the opening 1s of the housing 1. By closing the door 9, the door glass 9a is tightly pressed against the door seal 10, maintaining the watertightness of the outer casing 2 and the door 9. This prevents water leakage during washing, rinsing, and spin-drying.

[0036] Additionally, a circulation pump 18 is installed below the outer tub 2. This circulation pump 18 is fixed to the base 1h side of the housing 1. The circulation pump 18 has the function of drawing washing water to the upper part of the outer tub 2 and spraying it onto the laundry inside the drum 3. Washing water is delivered from the drain port 20 of the water receiving part (not shown) located at the lower part of the outer tub 2 to the lint filter 22 via piping 21. The washing water passing through the lint filter 22 enters the suction port side of the circulation pump 18, and after being pressurized by the circulation pump 18, it is sprayed into the drum 3 from the spray nozzles (not shown). Furthermore, the drain port 20 is connected to the drain hose 24 via the lint filter 22 and the drain valve 23, enabling the water in the outer tub 2 to be discharged outside the machine.

[0037] Additionally, an air supply duct 25 (circulating air path) connecting the outer tub 2 and the air supply fan 26 (air supply mechanism) is provided on the back of the outer tub 2. The air supply duct 25 guides airflow to the laundry inside the drum 3, and one end of it is connected to the lower back of the outer tub 2. The air supply fan 26 is connected to the other end of the air supply duct 25 via a dryer filter 27. Furthermore, the air supply fan 26 and the dryer filter 27 are fixed to the housing 1. The air generated by the air supply fan 26 is heated by the heater 28 to become warm air, which is discharged into the drum 3 from the blower nozzle 29. The warm air blown onto the laundry becomes hot and humid air, which is drawn into the air supply duct 25 and cooled and dehumidified by a water-cooled dehumidification mechanism (not shown) provided in the air supply duct 25 to become low-temperature air. Alternatively, a heat pump can be used instead of the heater and the water-cooled dehumidification mechanism. In this embodiment, the water-cooled dehumidification mechanism (not shown) and the heater 28 constitute a drying mechanism for drying clothes.

[0038] Furthermore, the blower nozzle 29 is connected to the blower fan 26, and the upper end of the blower duct 25 is connected to the dryer filter 27 via flexible rubber corrugated pipes 31a and 31b. Additionally, the piping 21 between the drain outlet 20 and the circulation pump 18 is also equipped with a corrugated pipe (not shown). These corrugated pipes 31a and 31b, along with the shock absorbers (not shown) at the bottom of the outer tank 2, absorb vibrations of the outer tank 2 during operation.

[0039] Figure 2 It is a cross-sectional view showing the upper part of the groove containing the door seal. Figure 3 This is a cross-sectional view showing the upper part of the door seal.

[0040] like Figure 2 As shown, the door seal 10 has: an outer protrusion 11A (protrusion), which is relative to the rotation axis O of the roller 3 (refer to...). Figure 1 The outer protrusion 11A is located radially outward and is convex towards the door 9; and the inner recess 12A is located radially inward than the outer protrusion 11A and is concave towards the door 9. In other words, the door seal 10 is configured to be approximately S-shaped in cross-section. By providing such an outer protrusion 11A and inner recess 12A, the fixed housing 1 and the elastically supported vibrating outer groove 2 are connected, functioning as a vibration absorber to follow the amplitude of the groove during operation.

[0041] Furthermore, to prevent water from leaking out of the machine from between the door glass 9a and the outer groove 2 (outer groove cover 4), the door seal 10 has a rib-shaped water seal portion 13 protruding inward in the circumferential direction (radial inner side) to ensure uniform contact with the outer circumference of the door glass 9a. Radial refers to the direction orthogonal to the rotation axis O. Figure 2 This indicates that door 9 is closed.

[0042] like Figure 3 As shown, the outer protrusion 11A has a flat portion 11a extending radially, a curved portion 11b that bends from the upper end of the flat portion 11a into a generally semi-circular shape, and a groove cover 4 extending from the lower end of the flat portion 11a outward (see reference). Figure 2 The curved portion 11c is a side bend. Alternatively, the flat portion 11a can be formed by continuously connecting the curved portions 11c and 11b, or it can be uneven. The end of the curved portion 11b is fixed to the outer groove cover 4 (see reference). Figure 2 The corners of the boundaries between the curved portion 11c and the flat portion 11a are curved into an R shape.

[0043] The inner recess 12A has a relative to the rotation axis O (refer to) Figure 1 The outer portion 12a is located radially outward, the inner portion 12b is located radially inward, and the vertex portion 12c is located at the boundary between the outer portion 12a and the inner portion 12b, and is formed in a generally U-shaped cross-section. The outer portion 12a and the curved portion 11c are formed continuously. The inner portion 12b is formed to extend towards the water seal portion 13 in the front-back direction (direction of the rotation axis O). The inner portion 12b is formed by a generally flat surface. The vertex portion 12c is the turning point from the outer portion 12a to the inner portion 12b. This vertex portion 12c is located further to the outer casing 4 than the outer portion 12a and the inner portion 12b. In addition, the surface from the outer portion 12a to the inner portion 12b is formed as a gentle slope.

[0044] Return to Figure 2 A rib 14 (for preventing clothes from getting caught) extending toward the door seal 10 is integrally formed on the outer casing 4. This rib 14 protrudes toward the inner portion 12b and toward the rotation axis O. Furthermore, the rib 14 is continuously formed in the circumferential direction. By providing the rib 14 in this way, the gap S1 between the rib 14 and the door seal 10 is narrowed, preventing clothes from getting caught. Therefore, the protrusions conventionally provided on the door seal for preventing laundry from getting caught are no longer necessary.

[0045] Additionally, the outer casing 4 has a water supply path 15a for supplying cleaning water to the door seal 10 and a spray nozzle 15b for spraying cleaning water to the door seal 10. A water supply hose (not shown) for supplying tap water for cleaning is connected to the upper end of the water supply path 15a. Furthermore, the water supply hose is connected to a water supply valve, which is opened when cleaning water is supplied. Cleaning is performed, for example, after a washing or rinsing process.

[0046] Figure 4 It is a cross-sectional view showing the lower part of the groove containing the door seal. Figure 5 yes Figure 4 Enlarged view of part A. Figure 6 This is a cross-sectional view showing the lower part of the door seal.

[0047] like Figure 4 As shown, the door 9 is configured such that its lower part protrudes more than its upper part. That is, the upper part of the door 9 is located in front of the apex 12c of the door seal 10 (see reference). Figure 2 The lower part of the door 9 protrudes to the position of the opening 3a that enters the roller 3.

[0048] A drain hole 16 is formed on the lower front part (lower front part) of the outer tank cover 4 in a manner that extends in a generally front-to-back direction. In addition, the drain hole 16 is formed in a slender manner along the circumference of the outer tank cover 4. As a result, it is possible to prevent foreign objects such as coins or buttons from the laundry inside the drum 3 from falling into the outer tank 2.

[0049] like Figure 5 As shown, the door seal 10 has: an outer protrusion 11B (protrusion), which is relative to the rotation axis O of the roller 3 (refer to...). Figure 1 The outer protrusion 11A, 11B and the inner recess 12A, 12B are located radially outward and convex towards the door 9; and the inner recess 12B is located radially inward than the outer protrusion 11B and is concave towards the door 9. In other words, the door seal 10 is configured to be approximately S-shaped in cross-section. Thus, the door seal 10 has outer protrusions 11A, 11B and inner recesses 12A, 12B from the top to the side and the entire bottom. That is, there are no protrusions for preventing clothing from getting caught in the door seal 10, as is the case with conventional seals.

[0050] like Figure 6 As shown, the outer protrusion 11B has a flat portion 11a extending radially, a curved portion 11d bending from the lower end of the flat portion 11a in a substantially orthogonal direction, and a curved portion 11c bending from the upper end of the flat portion 11a in a substantially orthogonal direction. Furthermore, the flat portion 11a may be non-flat as long as the curved portions 11d and 11c are continuously connected. The end of the curved portion 11d is fixed to the outer groove cover 4 (see reference). Figure 2 The corners of the boundaries of the curved portion 11c and the flat portion 11a, as well as the corners of the boundaries of the curved portion 11d and the flat portion 11a, are respectively curved into R shapes. In addition, the outer protrusion 11A at the upper part and the outer protrusion 11B at the lower part of the door seal 10 have different shapes, but they can also be the same shape (a shape that is symmetrical from top to bottom).

[0051] The inner recess 12B has a relative rotation axis O (refer to) Figure 1The system comprises an outer portion 12a located radially outward, an inner portion 12b located radially inward, and a vertex portion 12c located at the boundary between the outer portion 12a and the inner portion 12b. The outer portion 12a and the curved portion 11c are formed continuously. The inner portion 12b is formed to extend towards the water seal portion 13 in the front-back direction (direction of the rotation axis O). The inner portion 12b is formed with a generally flat surface. The vertex portion 12c is the point where the outer portion 12a folds back towards the inner portion 12b. This vertex portion 12c is located further away from the outer casing 4 than the outer portion 12a and the inner portion 12b. Furthermore, the surface from the outer portion 12a to the inner portion 12b is gently sloping.

[0052] Return to Figure 5 A rib 14 extending toward the door seal 10 is integrally formed on the outer casing 4. This rib 14 is continuously formed in the circumferential direction. By providing the rib 14 in this way, the gap S2 between the rib 14 and the inner recess 12 of the door seal 10 is narrowed. As a result, the protrusions that are conventionally provided on the door seal to prevent laundry from getting stuck are no longer needed.

[0053] In this configuration, the drum-type washer-dryer 100 agitates the laundry and wash water inside the drum 3 during the washing and rinsing processes. Wash water containing lint and other debris flies onto the door seal 10 and falls to the lower front part of the outer tank cover 4. Furthermore, the lower front part is the lowest point where wash water flows in. Because a drain hole 16 is formed at the lower front part of the outer tank cover 4, water droplets and lint (cotton fibers) falling onto the lower front part of the outer tank cover 4 do not accumulate on the outer tank cover 4, but are discharged through the drain hole 16.

[0054] In the cleaning process of the door seal 10 in the drum washer-dryer 100, the water supply valve is opened, and cleaning water (tap water) is sprayed from the spray nozzle 15b onto the outer side of the outer tank cover 4 of the outer protrusion 11A. The sprayed cleaning water flows from the outer side 12a of the inner recess 12A along the inner side 12b to the water seal 13. Then, due to gravity, it flows along the outer sides of the left and right sides of the door seal 10 and gradually flows towards the outer side 12a of the lower part of the door seal 10, draining water into the outer tank 2 through the drain hole 16 of the outer tank cover 4. As a result, the lint attached to the door seal 10 is washed away, and the accumulation of lint is suppressed. In addition, the lint discharged into the outer tank 2 along with the water is captured by the lint filter 22 through the piping 21.

[0055] Figure 7 This is a cross-sectional view of the lower part of the trough, showing the airflow during drying operation. Additionally, in Figure 7 In the image, dashed lines represent the movement of wind.

[0056] During the drying operation of the drum washer-dryer 100, if the blower fan 26 is turned on and the heater 28 is energized, drying air is introduced into the drum 3 from the blower nozzle 29, heating the laundry and causing the moisture to evaporate. The hot and humid air is discharged to the outer trough 2 through the through-hole (not shown) formed on the drum 3 and is drawn into the air supply duct 25. Then, it is cooled and dehumidified by the cooling water flowing down from the dehumidification mechanism, becoming dry, low-temperature air, and lint is captured by the dryer filter 27. Afterward, it is reheated by the heater 28 and circulated into the drum 3. In addition, during drying, the drain valve 23 is opened, and the cooling water flowing down from the dehumidification mechanism and the dehumidified moisture are discharged to the outside through the drain hose 24.

[0057] In addition, such as Figure 7 As shown, the dry air delivered from the blow-out nozzle 29 into the drum 3, together with the lint separated from the laundry, enters the concave space R formed by the lower outer peripheral surface of the door glass 9a, the water seal portion 13 of the door seal 10, and the inner side portion 12b, and then flows into the outer groove 2 through the gap S2 and the drain hole 16.

[0058] As described above, the drum-type washer-dryer 100 of the first embodiment includes: a housing 1; a door 9, which is slidably installed on the housing; a door glass 9a, which is provided on the door 9 and is convex in shape; an outer tub 2, which is elastically supported in the housing 1 and stores water; a freely rotatable drum 3, which is provided in the outer tub 2 and can hold clothes; a drying mechanism (water-cooled dehumidification mechanism and heater 28) for drying clothes in the drum 3; a blower fan 26 for supplying air to the outer tub 2 and the drum 3; a blower duct 25 connecting the outer tub 2 and the blower fan 26; an outer tub cover 4 for covering the front side of the outer tub 2; a door seal 10 for water sealing the door 9 and the outer tub cover 4; and a drain hole 16 provided near the lower part of the connection between the outer tub cover 4 and the door seal 10. The door seal 10 has: outer protrusions 11A and 11B, which are radially outer and convex towards the door 9 relative to the rotation axis O of the roller 3; and inner recesses 12A and 12B, which are radially inner and concave towards the door 9. The inner recesses 12A and 12B have an outer portion 12a located radially outer, an inner portion 12b located radially inner, and a vertex portion 12c located at the boundary between the outer portion 12a and the inner portion 12b. The inner portion 12b has a portion that does not protrude further outward towards the outer groove 4 than the vertex portion 12c. Therefore, by providing a portion that does not protrude to the outer casing 4 compared to the apex portion 12c (by eliminating the protrusions used in the past to prevent clothing from getting caught), the airflow within the trough during drying operation is less likely to stagnate in the space between the outer casing 2 (outer casing 4) and the vibration absorption portion (outer protrusion 11B and inner recess 12B), thus suppressing the adhesion and accumulation of lint. As a result, drainage performance is not affected, and insufficient drying and prolonged operating time during the drying process are prevented.

[0059] Furthermore, in the first embodiment, the outer casing 4 has ribs 14 that protrude toward the inner side 12b and toward the rotation axis O. As a result, the gaps S1 and S2 between the door seal 10 and the outer casing 4 can be positioned at the front of the main body, thus suppressing the entrapment of clothing during operation compared to the past.

[0060] Furthermore, in the first embodiment, a water supply path 15a for cleaning the inner circumference of the door seal 10 is provided, and a spray nozzle 15b is provided on the outer casing 4 to supply cleaning water to the inner circumference of the door seal 10. The spray nozzle 15b is provided such that cleaning water is supplied to the outer casing 4 side of the outer protrusion 11A. As a result, the outer portion 12a and the inner portion 12b of the inner recess 12A are connected by a gentle surface, so the cleaning water sprayed towards the outer protrusion 11A can easily flow from the outer portion 12a to the inner portion 12b, and the water pressure of the cleaning water will not drop due to the minimal spray nozzle 15b, allowing the cleaning water to cover a larger area of ​​the inner circumference of the door seal 10.

[0061] Furthermore, in the first embodiment, the spray nozzle 15b is located on the upper part of the outer casing 4. This allows for the suppression of cotton lint adhesion and accumulation over a wider area.

[0062] (Second Implementation)

[0063] Figure 8 This is a cross-sectional view showing the upper part of the groove containing the door seal according to the second embodiment. Figure 9 yes Figure 8 A front view of the injection nozzle. Furthermore, in the second embodiment, the same reference numerals are used to label structures identical to those in the first embodiment, and repeated descriptions are omitted (the same applies to other embodiments).

[0064] like Figure 8 As shown, the door seal 10A used in the drum-type washer-dryer of the second embodiment has: an outer protrusion 11A (protrusion), which is relative to the rotation axis O of the drum 3 (see reference). Figure 1 The outer convex portion 11A is located radially outward and faces the door 9, forming a convex shape; and the inner recess 12C is located radially inward than the outer convex portion 11A and faces the door 9, forming a concave shape. In other words, the door seal 10A is configured to be approximately S-shaped in cross-section. By providing such an outer convex portion 11A and an inner recess 12A, the fixed housing 1 and the elastically supported vibrating outer groove 2 are connected, functioning as a vibration absorber to follow the amplitude of the groove during operation.

[0065] Furthermore, the inner recess 12C has a protrusion 17 that protrudes from the inner portion 12b toward the outer casing 4. This protrusion 17 is continuously formed in the circumferential direction. In addition, the protrusion 17 does not protrude toward the outer casing 4 as much as the apex portion 12c.

[0066] In addition, the injection port 15b provided on the outer casing 4 is arranged so that the surface facing the outer casing 4 side of the outer protrusion 11A is opposite to it.

[0067] like Figure 9 As shown, the nozzle 15b has two openings 15b1 and 15b2. One opening 15b1 is configured to spray cleaning water in one direction in the circumferential direction, and the other opening 15b2 is configured to spray cleaning water in the other direction in the circumferential direction.

[0068] Thus, in the second embodiment, multiple openings 15b1 and 15b2 are provided so that the spray nozzle 15b sprays water from both sides. This ensures that the circumferential cleaning water volume of one side of the door seal 10A is approximately the same as that of the other side, allowing for stable cleaning of the entire circumference of the door seal 10A. Furthermore, the cleaning water sprayed from the nozzle 15b hits the surface of the outer casing 4 of the outer protrusion 11A, and flows down the outer protrusion 11A circumferentially. The cleaning water flowing to the lower part of the door seal 10 falls into the outer casing 4 through the drain hole 16, and is then discharged outside the machine through the water receiving part (not shown) and drain hole 20 of the outer casing 2.

[0069] However, in the drum washer-dryer 100, the door glass 9a of the door 9 is configured to be thinner at the top and thicker towards the bottom. Therefore, air during drying is less likely to be trapped in the recess formed by the inner side 12b, the water seal 13, and the door glass 9a at the top of the door seal 10A. Thus, even with the protrusion 17 at the top of the door seal 10A, the adhesion and accumulation of lint can be suppressed. In this way, by providing the protrusion 17 at the top of the door seal 10A, the gap S1 between the door seal 10A and the rib 14 can be reduced, and the trapping of clothing can be more effectively suppressed.

[0070] (Third Implementation)

[0071] Figure 10 This is a cross-sectional view showing the upper part of the groove containing the door seal according to the third embodiment. Figure 11 yes Figure 10 The front view of the injection nozzle.

[0072] like Figure 10 As shown, the outer casing 4 is provided with a spray nozzle 15c for spraying cleaning water onto the door seal 10. In addition, part of the cleaning water sprayed from the spray nozzle 15c is sprayed onto the outer protrusion 11A, and another part is sprayed onto the inner recess 12A.

[0073] like Figure 11 As shown, the spray nozzle 15c has four openings 15c1, 15c2, 15c3, and 15c4. Openings 15c1 and 15c2 are located at the top, spraying cleaning water to the left and right and upward (towards one circumferential direction and the other). Openings 15c3 and 15c4 are located below the openings 15c1 and 15c2, spraying cleaning water to the left and right and downward (towards one circumferential direction and the other).

[0074] The cleaning water sprayed onto the outer protrusion 11A expands towards the outer surface of the outer casing 4 of the outer protrusion 11A and flows down circumferentially. Meanwhile, the cleaning water sprayed onto the apex 12c of the inner recess 12A flows along the lower surface of the inner portion 12b to the water seal 13 and then to the door glass 9a. Furthermore, the cleaning water flowing downwards along the door glass 9a passes through the gap S2 (see reference). Figure 7 The water flows down the drain hole 16 to the inside of the outer tank cover 4, and is discharged from the drain outlet 20 to the outside of the machine through the water receiving part of the outer tank 2.

[0075] Thus, by providing a cleaning mechanism with a spray nozzle 15c having multiple openings 15c1 to 15c4, cleaning can be performed on both the outer protrusion 11A and the inner recess 12A.

[0076] (Fourth Implementation)

[0077] Figure 12 This is a perspective view showing the door seal in the fourth embodiment. Additionally, Figure 12 This indicates the state of the door seal 10B as viewed from the upper angle on the 4th side of the outer casing.

[0078] like Figure 12 As shown, the door seal 10B has an outer protrusion 11B and an inner recess 12B within the lower region θ1 (see reference). Figure 7 The structure has protrusions (protrusions to prevent clothing from getting caught) formed in a range other than θ1. For example, the range θ1 is set to 120 degrees, but is not limited to this range. In this way, in the case of door glass 9a with a thin upper part and a thick lower part, by providing only the portion with the outer protrusion 11B and the inner recess 12B formed in the lower part (partially providing the portion without the protrusions to prevent clothing from getting caught), the adhesion and accumulation of lint can be suppressed.

[0079] (Fifth Implementation)

[0080] Figure 13 This is a perspective view showing the door seal in the fifth embodiment.

[0081] like Figure 13 As shown, the door seal 10C has an outer protrusion 11B and an inner recess 12B in the lower region θ1 (see reference). Figure 7 The structure has an outer protrusion 11A and an inner recess 12A in the upper region θ2 (see reference). Figure 2The structure is as follows. Furthermore, a protrusion (for preventing clothing from getting caught) is formed within a range other than θ1 and θ2. For example, the ranges θ1 and θ2 are each set to 120 degrees, but are not limited to this range. Thus, by providing portions with an outer protrusion 11B and an inner recess 12B, and portions with an outer protrusion 11A and an inner recess 12A—that is, by partially providing portions without the conventional protrusions for preventing clothing from getting caught—the adhesion and accumulation of lint can be suppressed.

[0082] Symbol Explanation

[0083] 1. Shell (box)

[0084] 2 outer grooves

[0085] 3 rollers (inner groove)

[0086] 3a opening

[0087] 4 outer tank cover

[0088] 4a opening

[0089] 9 doors

[0090] 9a door glass

[0091] 9b door frame

[0092] 10, 10A, 10B, 10C door seals; 11A, 11B outer convex part (protrusion)

[0093] 12A, 12B, 12C inner recess (recess)

[0094] 12a outer side

[0095] 12b inner side

[0096] 12c Vertex

[0097] 13 Water seal section

[0098] 14 ribs (ribs used to prevent food from getting caught in clothing)

[0099] 15a water supply path

[0100] 15b and 15c injection nozzles

[0101] 16 drainage holes at the openings of 15b1, 15b2, 15c1, 15c2, 15c3, and 15c4

[0102] 17 protrusions

[0103] 25. Air supply duct (recirculating air path)

[0104] 26. Air supply fan (air supply mechanism)

[0105] 28. Heater (Drying Mechanism)

[0106] 100 drum washer and dryer

[0107] O Rotation axis

Claims

1. A drum-type washing and drying machine, characterized in that, include: Box; A door, which is installed in the housing and can be opened and closed freely; Door glass, which is disposed in the door and formed in a convex shape; The outer tank is elastically supported inside the box and stores water. A freely rotating inner groove is disposed within the outer groove and is capable of holding clothing; A drying mechanism for drying the clothes inside the inner tank; An air supply mechanism for supplying air to the outer tank and the inner tank; A circulating air duct connects the outer trough and the air supply mechanism; An outer casing that covers the front side of the outer groove; A door seal that provides a water seal for the door and the outer casing; and A drain hole is located near the lower part of the connection between the outer casing and the door seal. The door seal has a convex portion and a concave portion. The convex portion is located radially outward relative to the rotation axis of the inner groove and faces the door side in a convex shape. The concave portion is located radially inward than the convex portion and faces the door side in a concave shape. The recess includes: an outer portion located on the outer side of the radial direction; an inner portion located on the inner side of the radial direction; and a vertex portion located at the boundary between the outer portion and the inner portion. The inner portion has a portion that does not protrude further toward the outer casing than the apex portion. The door seal has a structure with the protrusion and the recess within the lower range θ1, and a protrusion for preventing clothing from getting caught in the seal is formed in the range other than θ1. The protrusion protrudes from the inner side toward the outer cover and does not protrude further toward the outer cover than the apex.

2. The drum-type washer-dryer according to claim 1, characterized in that, The outer cover has ribs for preventing clothing from getting caught in it, and the ribs protrude toward the rotation axis toward the inner side or the apex.

3. The drum-type washer-dryer according to claim 1 or 2, characterized in that, include: A water supply path for cleaning the inner circumference of the door seal; And a spray nozzle, which is disposed in the outer groove cover, and supplies cleaning water to the inner circumference of the door seal. The spray nozzle is configured to supply cleaning water to the outer casing side of the recess and / or the outer casing side of the protrusion.

4. The drum-type washer-dryer according to claim 3, characterized in that, The injection port is located on the upper part of the outer casing.

5. The drum-type washer-dryer according to claim 4, characterized in that, The spray nozzles are multiple in number, with the spray pattern split to the left and right.

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