JP2005000481A - Washing/drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing/drying machine retaining washing performance and improving drying performance. <P>SOLUTION: This washing/drying machine 1 is provided with a water tub 40, a rotating drum 50, and a cylindrical lip 41 disposed in a clearance between the end of an opening part 55 of the rotating drum 50 and an opening end part of the water tub 40. The water vessel 40 has a bottom wall face and a drain outlet formed in the bottom wall face. A connecting part 42 between the bottom wall face and the drain outlet of the water tub is formed with a wall face outward projecting toward the drain outlet. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates generally to a washing and drying machine, and more particularly to a drum-type washing and drying machine that performs washing, rinsing, dehydration, and drying, and more specifically, a so-called horizontal rotary drum. The present invention relates to an improvement in drying performance suitable for the drum type laundry dryer provided.
[0002]
[Prior art]
Many drum-type washing / drying machines having a horizontal rotating drum have been proposed and are widely used. This type of drum-type washing and drying machine performs a washing process and a rinsing process by rotating a rotating drum at a low speed, and after performing a dehydrating process by rotating at a high speed, the same rotating drum is further used to enter the rotating drum. A drying process is performed by supplying hot air.
[0003]
In the conventional drum type washing and drying machine, for example, as described in Japanese Utility Model Publication No. 58-794 (Patent Document 1), hot air to be supplied is surely brought into contact with the laundry to improve the drying performance. As a means for blowing hot air into the inside of the rotating drum, there is shown one in which the door glass end face is inclined.
[0004]
Further, as described in, for example, Japanese Patent Application Laid-Open No. 64-15093 (Patent Document 2), uniform hot air blowing into the drum is performed as an improvement of the hot air blowing path for blowing hot air into the rotating drum. For this purpose, there is shown a drum-type washing and drying machine in which a ring-shaped protrusion formed on a lid portion of a front door is connected so as to communicate with a hot air outlet end of an air passage.
[0005]
Furthermore, as described in, for example, Japanese Patent Laid-Open No. 4-240482 (Patent Document 3), as a conventional drum-type washing and drying machine that considers blowing hot air into the drum so that hot air directly hits clothing, In the figure, a blowout hole communicating with the drum is provided at the lower part of a donut-shaped duct provided at the front of the water tank and communicating with the drum.
[0006]
In a conventional clothes dryer, as described in, for example, Japanese Patent Application Laid-Open No. 58-192589 (Patent Document 4), a hot air is provided by arranging a net along the inner wall of the rotating drum and apart from the inner wall. Is applied to the entire garment efficiently to improve the drying performance, and the generation of wrinkles is also suppressed.
[0007]
[Patent Document 1]
Japanese Utility Model Publication No. 58-794 [Patent Document 2]
Japanese Patent Application Laid-Open No. 64-15093 [Patent Document 3]
JP-A-4-240482 [Patent Document 4]
Japanese Patent Laid-Open No. 58-192592
[Problems to be solved by the invention]
However, in the conventional drum-type washing / drying machine disclosed in Japanese Utility Model Laid-Open No. 58-794, when the amount of clothes to be dried is large, the effect is reduced. That is, when the amount of clothes to be dried is large, there is a problem that the clothes are pressed against the door glass and the clothes are twisted. Moreover, the problem that the flow of hot air is obstructed by the clothing located near the door glass, the hot air is likely to flow through the gap between the water tank and the rotating drum, and the hot air for drying the clothing is not effectively used. The problem is not solved.
[0009]
Moreover, even if the structure disclosed in Japanese Patent Application Laid-Open No. 64-15093 and Japanese Patent Application Laid-Open No. 4-240482 is adopted, there is a problem that hot air or hot air easily flows in the gap between the water tank and the rotating drum. It is not solved. Therefore, the problem of efficiently using hot air or warm air for drying remains unsolved.
[0010]
In the conventional clothes dryer disclosed in Japanese Patent Laid-Open No. 58-192592, a net is used to efficiently apply hot air to the entire clothes to improve the drying performance. However, even if such an improvement can be applied to a drying machine that does not perform a high-speed dewatering process, the drying process is continuously performed with the high-speed rotation dewatering process completed in a series of processes. It is difficult to introduce into a washing / drying machine. In addition, when the net disclosed in the above publication is applied to a drum-type washing and drying machine, it is difficult to maintain a strength sufficient to withstand high-speed rotation in the dehydration process, and there is a problem that lint and the like accumulate.
[0011]
Accordingly, an object of the present invention is to provide a washing / drying machine capable of maintaining the washing performance and improving the drying performance.
[0012]
[Means for Solving the Problems]
A washing and drying machine according to one aspect of the present invention includes a water tub, a rotating drum that rotates in the water tub and performs washing, rinsing, dehydration and drying of the laundry therein, and air is blown into the rotating drum. And an air passage for sending. The rotating drum has an opening end, and the water tank has an opening end outside the opening end of the rotating drum. Furthermore, the washing and drying machine includes an air volume control member disposed in a gap between the opening end of the rotating drum and the opening end of the water tank.
[0013]
In the washer / dryer according to one aspect of the present invention, the air volume control member is disposed in the gap between the opening end of the rotating drum and the opening end of the water tank. This air volume control member prevents hot air or warm air supplied into the rotating drum through the air passage in the drying process from flowing into the gap between the opening end of the rotating drum and the opening end of the water tank. . Thereby, the quantity or ratio of the hot air or warm air flowing into the gap can be reduced. Therefore, the drying efficiency can be improved by increasing the proportion of hot air or hot air that comes into contact with the laundry in the rotating drum among the hot air or hot air supplied to the rotating drum through the air passage. An energy saving effect can be obtained.
[0014]
In addition, among the hot air discharged from the water tank through the rotating drum, it is possible to reduce the ratio of the hot air that passes through the gap and is not in contact with the laundry, so the end of the drying process is determined. Therefore, the detection operation of the temperature sensor or the like provided at each location is stable, and it is possible to determine the end of the drying process with few errors.
[0015]
In the washing and drying machine according to one aspect of the present invention, the air volume control member is formed in a cylindrical shape so as to surround the outer peripheral surface of the opening end portion of the rotating drum, and is opposed to the outer peripheral surface of the opening end portion of the rotating drum. It is preferable to have a concave portion.
[0016]
In this case, since the concave portion of the air flow control member can effectively receive hot air or hot air that tends to flow into the gap between the opening end of the rotating drum and the opening end of the water tank, the drying efficiency is further improved. It is possible to increase the error, and it is possible to reduce the error in determining whether the drying process has ended.
[0017]
The washing and drying machine according to one aspect of the present invention further includes an outer box having an opening, the water tank is disposed inside the outer box, and the opening that joins the opening of the outer box and the opening end of the water tank. A stop member may be provided. The air volume control member is preferably disposed along the sealing member.
[0018]
In this case, the air volume control member cooperates with the sealing member to more effectively prevent hot air or warm air from flowing into the gap between the opening end of the rotating drum and the opening end of the water tank. be able to.
[0019]
The air volume control member may be formed integrally with the sealing member. In this case, since the number of assembly steps can be reduced, the manufacturing cost can be reduced.
[0020]
A washing / drying machine according to another aspect of the present invention includes a water tub and a rotating drum that rotates in the water tub and performs washing, rinsing, dehydration and drying of the laundry therein. The water tank has a bottom wall surface and a drain outlet formed on the bottom wall surface. A wall surface projecting outward toward the drain port is formed at the connection between the bottom wall surface of the water tank and the drain port.
[0021]
In the washing and drying machine according to another aspect of the present invention, the wall surface formed at the connecting portion between the bottom wall surface of the water tank and the drain port protrudes outward toward the drain port, so the water in the water tank is drained. Without being retained at the bottom, it can be smoothly discharged out of the machine. Thereby, not only the waste water in the washing step, the rinsing step and the dehydration step, but also the heat exchange cooling water used in the drying step and the dehumidified and condensed water can be quickly discharged out of the apparatus. As a result, the detection operation of the water temperature sensor used for controlling the drying process is stabilized, and the dry state of the laundry can be stabilized.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
[0023]
FIG. 1 and FIG. 2 are sectional views showing a schematic structure of a drum-type washing and drying machine as one embodiment of the present invention. As shown in FIGS. 1 and 2, the washing and drying machine 1 includes a main body 10, a water tank 40 attached to the inside of the main body 10, and a rotating drum 50 that is rotatably supported inside the water tank 40.
[0024]
An opening / closing door 11 is attached to the front surface of the main body 10. By opening the door 11, the laundry can be put into or taken out of the rotary drum 50 through the laundry slot 20 provided on the front surface of the main body 10, and the laundry is put in by closing the door 11. The mouth 20 can be closed.
[0025]
A glass window 31 or 32 is attached to the inside of the open / close door 11. The glass window 31 or 32 is made of transparent glass and has a bowl shape with a recessed center, that is, a basin shape having a so-called bottom. The inside of the rotating drum 50 can be seen through the glass window 31 or 32. As shown in FIG. 1, it is preferable to have a convex inclined surface or curved surface so that the surface forming the bottom of the glass window 31 approaches the rotating drum 50 toward the center. Alternatively, as shown in FIG. 2, it is preferable that the surface forming the bottom of the glass window 32 has a concave inclined surface or curved surface so as to move away from the rotating drum 50 toward the center. Anyway, it is preferable that the surface which forms the bottom part of a glass window is the inclined surface or curved surface which is changing so that it may incline toward the center from the periphery.
[0026]
A door packing 80 made of an elastic material such as rubber is fitted and fixed to the inner wall of the laundry insertion port 20. When the open / close door 11 is closed, the door packing 80 is brought into close contact with the periphery of the glass window 30 and sealed.
[0027]
The rotating drum 50 is supported so as to rotate about the shaft portion 60 inside the water tank 40. In this way, the drum type washing and drying machine 1 has a double structure composed of the water tank 40 and the rotating drum 50. The rotary drum 50 includes a drum body 52 that forms an inner peripheral wall surface at the center in the rotation axis direction, a drum lid 53 that forms an opening 55 at one end, and a drum bottom 51 that forms an inner bottom wall surface at the other end. Constructed and generally made from stainless steel plate. An uneven surface such as a rib is formed on the drum bottom 51 by pressing to attach a structural part such as the shaft portion 60 and support a desired load, thereby improving the strength of the bottom wall surface. A large number of small holes 54 for water supply, drainage and ventilation are provided in the peripheral wall and bottom of the rotary drum 50. A plurality of baffles 57 are attached to the inner peripheral surface of the drum body 52 that is the inner peripheral wall surface of the rotating drum 50 so as to protrude in the radial direction of the rotating drum 50. The baffle 57 extends between the opening 55 and the drum bottom 51 in the rotational axis direction of the rotary drum 50, has one end on the opening 55 side and the other end on the drum bottom 51 side. It is provided so that it may be located in the middle between the bottoms 51. The opening 55 has an inner wall surface with an inner diameter smaller than the inner diameter of the inner circumferential wall surface of the rotary drum 50, and constitutes a drum lid 53. A fluid balancer 56 is fixed to the outer peripheral edge of the drum lid 53 to prevent vibration during rotation. The shaft portion 60 includes a shaft of a drum rotation drive motor 70 for rotating the rotary drum 50. The rotation of the drum rotation drive motor 70 is controlled by an inverter circuit.
[0028]
The upper part of the water tank 40 is supported by a coil spring (not shown), and the lower part is supported by an anti-vibration damper (not shown). In this way, the water tank 40 is elastically supported inside the main body 10. A drainage device 120 is provided at the bottom of the water tank 40, and the drainage device 120 can drain the washing liquid from the water tank 40 to the outside of the main body 10. In addition, a wall 42 that protrudes outward toward the drain port is formed at the connection portion 42 between the bottom wall surface of the water tank 40 and the drain port.
[0029]
A heater case 150 that houses a drying heater 140 is provided on the upper part of the water tank 40. One end of the heater case 150 is connected to the door packing 80, and the other end is connected to the discharge port of the blower 160. An exhaust port 170 is provided in the lower part of the water tank 40. A dehumidifying heat exchanger 180 is provided between the exhaust port 170 and the blower 160. A cooling water nozzle 190 for spraying dehumidifying cooling water is provided above the dehumidifying heat exchanger 180. The blower driving motor 200 is a motor for driving the blower 160, and is controlled to an arbitrary rotational speed by inverter control or the like. The hot air heated by the drying heater 140 is blown into the rotary drum 50 by the blower 160, contacts the laundry, and then passes through the small hole 54 from the exhaust port 170 of the water tank 40 through the dehumidifying heat exchanger 180. Return to. At this time, the water sprayed from the cooling water nozzle 190 through the opened drying water supply valve comes into contact with the warm air to perform heat exchange. A drying process is performed by repeating this cycle.
[0030]
In one embodiment of the present invention, an air passage as shown by an arrow in FIG. The rotating drum 50 has an end of the opening 55, and the water tank 40 has an opening end outside the end of the opening 55 of the rotating drum 50. A cylindrical lip 41 is disposed as an air volume control member in the gap between the end of the opening 55 of the rotating drum 50 and the opening end of the water tank 40. The cylindrical lip 41 is formed in a cylindrical shape so as to surround the outer peripheral surface of the end portion of the opening 55 of the rotating drum 50, and has a recess facing the outer peripheral surface of the end portion of the opening 55 of the rotating drum 50. A door packing 80 is provided as a sealing member that joins the laundry input port 20, which is the opening of the main body 1, and the opening end of the water tank 40. The cylindrical lip 41 is disposed along the door packing 80. The cylindrical lip 41 may be formed integrally with the door packing 80. In this embodiment, the cylindrical lip 41 is attached to the open end of the water tank 40.
[0031]
FIG. 3 is a diagram illustrating an example of a schematic configuration of the control system of the washing / drying machine 1 configured as described above. As shown in FIG. 3, an operation panel 90 including an operation unit and a display unit is provided at the upper front of the main body. A control unit 100 that controls the operation of the washing / drying machine 1 is disposed on the back side of the operation panel 90. A water supply pipe arranged at the upper part of the main body is connected to a water pipe via a water supply valve 110. The water supply valve 110 is a water supply valve # 1 for supplying water to the detergent storage chamber and the bleaching material storage chamber, a water supply valve # 2 for supplying water to the soft finish storage chamber, and a drying for supplying cooling water for water cooling and dehumidification. It consists of a water supply valve. When the washing water supply valve is opened, tap water from the water pipe is supplied to the detergent case. The interior of the detergent case is separated into a detergent storage chamber for storing detergent, a bleach storage chamber for storing bleach, and a soft finish storage chamber for storing soft finishes. When the water supply valve # 1 for washing is opened, water is supplied to the detergent storage chamber and the bleach storage chamber, and water containing the detergent and the bleach is supplied into the rotary drum 50. Similarly, when the washing water supply valve # 2 is opened, water containing a soft finish is supplied.
[0032]
A water temperature sensor 130 is provided below the water tank 40. The water temperature sensor 130 detects the water temperature of the dehumidifying cooling water after heat exchange. The intake sensor 210 is attached to a connection portion between the end of the heater case 150 and the door packing 80 and detects the temperature of hot air heated by the drying heater 140. The exhaust sensor 220 is attached in the vicinity of the exhaust port 170 of the water tank 40 or in the vicinity of the connection part between the exhaust port 170 of the water tank 40 and the heat exchanger 180 for dehumidification, and the temperature of the hot air discharged from the rotary drum 50. Is detected. When humidity is detected, a humidity sensor is provided in the vicinity of the exhaust sensor 220. The hot air sensor 230 is provided between the dehumidifying heat exchanger 180 and the blower 160 and detects the temperature of the hot air after dehumidification.
[0033]
Hereinafter, the washing process, the rinsing process, the dehydrating process, and the drying process performed using the washing / drying machine 1 configured as described above will be described in the order of processes.
[0034]
First, the opening / closing door 11 is opened, and after the laundry is loaded from the laundry loading port 20, the opening / closing door 11 is closed. A detergent is put into the detergent case and the operation panel 90 is operated. As a result, the open / close door 11 is locked, the washing water supply valve # 1 is opened, and water containing detergent is supplied to the water tank 40 and the rotating drum 50 through the detergent case. When the water level in the water tank 40 reaches a predetermined water level, it is detected that the water level sensor has been activated and the water level has reached a predetermined value, the washing water supply valve # 1 is closed, and the rotating drum 50 is used for the washing process. It is rotated by the drum rotation drive motor 70 according to the rotation chart. In this way, the washing process is started.
[0035]
The rotation of the rotating drum 50 is performed by a plurality of rotations having different rotation speeds, rotation cycles, reversal cycles, etc. depending on the washing step, the rinsing step, the dehydration step, the drying step, or the type and course of the laundry. A chart is preset. The rotation chart is selected by the user or programmed to be selected automatically.
[0036]
When the washing process is finished, the washing liquid is discharged out of the main body 10 by the drainage device 120. When the drainage is completed, the rotary drum 50 rotates at a high speed on the rotation chart for the dehydration process, and the intermediate dehydration process is performed. The washing liquid contained in the laundry is discharged to the inner wall surface of the water tank 40 through a small hole 54 provided in the peripheral wall of the rotating drum 50 by centrifugal force generated by the rotation of the rotating drum 50. The washing liquid flows down along the inner wall surface of the water tank 40 and is discharged out of the main body 10 through the drainage device 120.
[0037]
When the intermediate dehydration process is completed, the program proceeds to the rinsing process. After the drainage device 120 is stopped, the water supply valve # 1 for washing is opened, and water is supplied to the water tank 40 and the rotating drum 50 through the detergent case. When the water level in the water tank 40 reaches a predetermined water level, it is detected that the water level sensor has been activated and the water level has reached a predetermined value, the washing water supply valve # 1 is closed, and the rotating drum 50 is used for the rinsing process. Is rotated by a drum rotation driving motor 70 in accordance with the rotation chart of FIG. In this way, the rinsing process is started. The rinsing process is repeated a plurality of times. In the final rinsing process, the washing water supply valve # 2 is opened, and the water containing the soft finish is supplied to the water tank 40 and the rotating drum 50.
[0038]
When the rinsing process is completed, the rinsing liquid is discharged out of the main body 10 by the drainage device 120. When the drainage is completed, the rotary drum 50 rotates at high speed according to the rotation chart for the dehydration process, and the final dehydration process is performed. The rinsing liquid contained in the laundry is discharged to the inner wall surface of the water tank 40 through the small holes 54 provided in the peripheral wall of the rotating drum 50 due to the centrifugal force generated by the rotation of the rotating drum 50. This is the same as the dehydration step.
[0039]
When the final dehydration process is completed, the process proceeds to the drying process. In the drying process, the blower 160 is driven by the blower driving motor 200 and energized to the drying heater 140, and hot air is sent into the water tank 40 and the rotating drum 50 as indicated by arrows in FIG. 1. This hot air comes into contact with the laundry containing moisture after dehydration inside the rotating drum 50, evaporates the moisture and becomes high-humidity hot air containing water vapor, and is discharged from the rotating drum 50 and the water tank 40. The As indicated by arrows in FIG. 1, this high temperature and high temperature hot air enters the dehumidifying heat exchanger 180 from the exhaust port 170 provided in the lower part of the water tank 40 and is sprayed from the cooling water nozzle 190. Heat exchange with the cooling water is performed to dehumidify, dry, and return to the blower 160. The warm air is heated again by the drying heater 140 and blown into the water tank 40 and the rotating drum 50. A drying process is performed by repeating this operation.
[0040]
The humidity or temperature inside the rotating drum 50 or the humidity or temperature of the warm air discharged from the rotating drum 50 is detected by a humidity sensor or the like. When the detected value exceeds a predetermined value, energization to the drying heater 140 is stopped. Thereafter, the blowing operation is performed until a predetermined time elapses, and the drying process is completed. Alternatively, the blowing operation is performed until the exhaust temperature from the water tank 40 detected by the exhaust sensor 220 is equal to or lower than a predetermined value, the blowing operation is performed, and the drying process is terminated.
[0041]
The moisture dehumidified and condensed in the drying process flows down the dehumidifying heat exchanger 180 and is discharged out of the main body 10 by the drainage device 120 provided at the lower part of the water tank 40. While the drying process is performed, the rotary drum 50 is rotated according to the rotation chart for the drying process. This rotation chart has a plurality of rotation speeds, inversion cycles, and rest periods from the start to the end of drying, and is selected by the user or automatically selected according to the amount and type of the laundry.
[0042]
In the above drying process, hot air is sent into the water tank 40 and the rotating drum 50 and comes into contact with the laundry containing moisture after dehydration to evaporate the moisture to become high-humidity hot air containing water vapor. , Discharged from the rotating drum 50 and the water tank 40. In the drying process, it is important that the hot air supplied to dry the laundry comes into contact with the laundry in the rotating drum 50 and is used to evaporate moisture in the laundry.
[0043]
In the embodiment of the present invention, as shown in FIG. 1 and FIG. 2, the gap between the end of the opening 55 of the rotary drum 50 and the opening end of the water tank 40 has a cylindrical shape as an air volume control member. A lip 41 is arranged. The cylindrical lip 41 tends to allow hot air supplied into the rotary drum 50 through the air passage in the drying process to flow into a gap between the end of the opening 55 of the rotary drum 50 and the open end of the water tank 40. Disturb. Thereby, the quantity or ratio of the hot air flowing into the gap can be reduced. Therefore, the drying efficiency can be improved by increasing the ratio of the hot air that comes into contact with the laundry in the rotating drum among the hot air supplied into the rotating drum 50 through the air passage, so that an energy saving effect is obtained. be able to.
[0044]
Moreover, since the ratio of the warm air discharged from the exhaust port 170 of the water tank 40 through the rotating drum 50 without passing through the gap and contacting the laundry can be reduced. The detection operation of the intake sensor 210, the exhaust sensor 220, and the hot air sensor 230 provided for determining the end of the drying process is stable, and particularly the detection operation of the exhaust sensor 220 is stable, and the determination of the completion of the drying process with few errors. Is possible.
[0045]
In the above embodiment, the cylindrical lip 41 as the air flow control member is formed in a cylindrical shape so as to surround the outer peripheral surface of the end portion of the opening 55 of the rotating drum 50, and the end of the opening 55 of the rotating drum 50 is A concave portion facing the outer peripheral surface of the portion. As an action of the shape and arrangement of such an air volume control member, the concave portion of the cylindrical lip 41 can effectively receive hot air that tries to flow into the gap, so that the drying efficiency can be further increased. The error in determining whether the drying process has ended can be further reduced.
[0046]
In the above-described embodiment, the cylindrical lip 41 is disposed along the door packing 80 as an air volume control member. The cylindrical lip 41 may be formed integrally with the door packing 80. With this arrangement, the cylindrical lip 41 can more effectively prevent hot air from flowing into the gap in cooperation with the door packing 80.
[0047]
In the above-described embodiment, the cylindrical lip 41 having the shape as shown in FIGS. 1 and 2 is used as the air volume control member, but at least the end of the opening 55 of the rotating drum 50 and the opening of the water tank 40 are used. The shape is not limited as long as it is arranged in the gap between the end portions and prevents the flow of hot air or hot air flowing into the gap.
[0048]
In the embodiment of the present invention, the connecting portion 42 between the bottom wall surface of the water tank 40 and the drain port is formed with a wall surface protruding outward toward the drain port, so that the water in the water tank 40 is at the bottom. It can be smoothly discharged outside the machine without being retained. Thereby, not only the waste water in the washing step, the rinsing step and the dehydration step, but also the heat exchange cooling water used in the drying step and the dehumidified and condensed water can be quickly discharged out of the apparatus. As a result, the detection operation of the water temperature sensor 130 used to control the drying process and provided in the lower part of the water tub 40 is stabilized, and the dry state of the laundry can be stabilized.
[0049]
In FIG. 1 and FIG. 2, the connecting portion 42 employs a wall surface that protrudes outward toward the drain port in a stepped manner, but is not limited thereto, and outwardly toward the drain port. The wall surface may be inclined so as to protrude, and the inclination angle may gradually increase toward the drain port. Or the connection part 42 may be formed in several step shape.
[0050]
In the drying process, the laundry in the rotating drum 50 is lifted to the vicinity of the inner peripheral wall surface at the highest position in the rotating drum 50 by the centrifugal force generated by the rotation of the rotating drum 50 and the baffle 57, and then the weight of the laundry is increased. The tumbling operation of dropping to the inner peripheral wall surface at the lowest position is repeated. During this tumbling operation, the laundry comes into contact with the hot air especially during the period from when the laundry is lifted and dropped, thereby evaporating the moisture in the laundry and drying it. Therefore, in the drying process, it is important that the laundry is constantly moving in the rotating drum 50 by the tumbling operation.
[0051]
In the above embodiment, as shown in FIGS. 1 and 2, the surface forming the bottom of the glass window 31 or 32 is an inclined surface or curved surface that changes so as to incline from the peripheral edge toward the center. Therefore, even when the laundry is in contact with the central surface of the glass window 31 or 32 during the tumbling operation, it does not come into firm contact. As a result, the twist of the laundry caused by the contact with the glass window or the entanglement of the laundry can be prevented, and the damage and wrinkle of the laundry can be reduced. In addition, as shown in FIG. 1, when the glass window 31 has an inclined surface or a curved surface so that the surface forming the bottom of the glass window 31 has a convex shape toward the center, the formability when manufacturing the glass window is improved. Can be made.
[0052]
The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.
[0053]
【The invention's effect】
As described above, according to the present invention, the hot air or hot air for drying can be effectively used in the drying step, so that the drying efficiency can be improved and the energy saving effect can be obtained. In addition, the detection operation of the sensor for controlling the drying process is stabilized, it is possible to determine the end of the drying process with few errors, or it is possible to stabilize the drying state of the laundry. Therefore, drying performance can be improved in the washing dryer.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a schematic structure of a drum-type washing and drying machine as one embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a schematic structure of a drum-type washing and drying machine as another embodiment of the present invention.
FIG. 3 is a diagram showing an example of a schematic configuration of a control system for a washing and drying machine as an embodiment of the present invention.
[Explanation of symbols]
1: Washing / drying machine, 10: main body, 40: water tank, 41: cylindrical lip, 42: connection part, 50: rotating drum, 55: opening, 80: door packing, 120: drainage device.

Claims (4)

A water tank, a rotating drum that rotates in the water tank and performs washing, rinsing, dehydration and drying of the laundry therein, and an air passage for sending air to the inside of the rotating drum,
The rotary drum has an open end, the water tank has an open end outside the open end of the rotary drum,
A washing and drying machine comprising: an air volume control member disposed in a gap between the opening end of the rotating drum and the opening end of the water tank. The washing according to claim 1, wherein the air volume control member is formed in a cylindrical shape so as to surround an outer peripheral surface of an opening end portion of the rotating drum, and has a recess facing the outer peripheral surface of the opening end portion of the rotating drum. Dryer. The washing and drying machine further includes an outer box having an opening, the water tank is disposed inside the outer box, and a sealing member is provided to join the opening of the outer box and the opening end of the water tank. The washing / drying machine according to claim 1, wherein the air volume control member is disposed along the sealing member. A water tank, and a rotating drum that rotates in the water tank to wash, rinse, dehydrate and dry the laundry therein,
The water tank has a bottom wall surface and a drain port formed in the bottom wall surface,
The washing / drying machine, wherein a wall surface protruding outward toward the drain port is formed at a connection portion between the bottom wall surface of the water tank and the drain port.

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