JP2005000480A - 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 and a rotating drum 50. The rotating drum 50 has an internal circumferential wall surface of a drum trunk 52, an opening part 55 forming a drum lid 53, and an inner bottom wall face of a drum bottom 51. The drum trunk 52, on its internal circumferential wall face, is provided with a baffle 58. A distance between one end of the baffle 58 to the drum lid 53 is formed longer than a distance between the other end of the baffle 58 to the inner bottom face of the drum bottom 51. A drum bottom cover member 59 having an approximately flat surface opposite to the opening part 55 is so provided as to cover at least a part of the inner bottom wall surface of the drum bottom 51. <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. In this type of drum type washing and drying machine, a rotating drum is rotated at a low speed to perform a washing process and a rinsing process, and a high speed rotation is performed to perform a dehydration process, and then a drying process is further performed using the same rotating drum. Is.
[0003]
In a conventional drum-type washing / drying machine, for example, as described in Japanese Patent Application Laid-Open No. 9-276583 (Patent Document 1), the laundry in the drum is crested in the drum by centrifugal force and baffle due to the rotation of the drum. After being lifted to the vicinity, it falls due to its own weight (called tumbling). By repeating this tumbling, the laundry is washed with the impact force when dropped. Rinsing is performed in the same way. Similar tumbling is repeated in the drying step. In the drum type washer / dryer disclosed in the above publication, three baffles are attached to the inner peripheral wall surface of the drum at intervals in the circumferential direction of the drum. Each baffle is provided so that it may be located in the center part of an inner peripheral wall surface in the axial direction of a drum.
[0004]
In conventional clothes dryers, for example, as described in Japanese Patent Application Laid-Open No. 59-218193 (Patent Document 2), the inner surface of the peripheral surface plate of the drum has a height equal to the height to the edge of the front plate. A plurality of baffles having a constant height over the entire length are attached at intervals. In such a conventional clothes dryer, when the drum rotates, the thrown-in clothes are lifted upward by centrifugal force and the lifting action of the baffle, and then dropped in the space in the drum. During the fall, the garment is heated by the heater and comes into contact with the hot air sent from the air supply port. The moisture in the garment is evaporated and exhausted from the exhaust port by the drying air. Further, in order to improve the drying performance, a baffle formed with a shape in which the height on the rear plate side is lower than the height on the front plate side and extends in the rotation axis direction of the drum and the edge thereof is inclined is also shown. ing.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-276583
[Patent Document 2]
JP 59-218193 A
[0006]
[Problems to be solved by the invention]
However, in the conventional drum-type washing and drying machine disclosed in Japanese Patent Laid-Open No. 9-276583, when the dehydration process is performed by rotating the drum at a high speed, the laundry is sandwiched between the baffle and the inner bottom wall surface of the drum. In some cases, the dehydration process may be completed. If it transfers to a drying process in this state, the laundry will be heated by a hot air, staying in the position. In this way, since the tumbling operation of the laundry is hindered, the drying process may end in a state where there is a portion that is not partially dried. That is, drying unevenness may occur in the laundry.
[0007]
In addition, the drying process may be performed in a state where the laundry remains on the inner bottom wall surface of the drum. In this case, when the laundry is in an entangled state, the laundry cloth or the like may be damaged.
[0008]
By the way, Japanese Patent Application Laid-Open No. 59-218193 discloses a modification of the shape of a baffle that imparts a tumbling operation to clothes in order to improve drying performance in a clothes dryer exclusively for drying. However, tumbling operation in a single drying process can be improved by applying such a baffle shape to a drum-type washing and drying machine that performs washing, rinsing, dewatering and drying in the same drum. Even so, it is difficult to improve the drying performance in the washing and drying machine in which the drying process is continuously performed with the high-speed rotation dehydration process completed in a series of processes. Moreover, when the shape of the baffle disclosed in the above publication is applied to a drum-type washing and drying machine, it is difficult to ensure the desired cleaning performance, the strength of the drum to withstand high-speed rotation in the dehydration process, and the like.
[0009]
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.
[0010]
[Means for Solving the Problems]
A washing / drying machine according to one aspect of the present invention includes a water tank and a rotating drum that rotates in the water tank to wash, rinse, dehydrate and dry the laundry therein. The rotating drum has an inner peripheral wall surface at the center in the rotation axis direction, an opening at one end, and an inner bottom wall surface at the other end. A baffle portion that protrudes in the radial direction of the rotating drum and extends in the rotation axis direction of the rotating drum is provided between the opening and the inner bottom wall surface on the inner peripheral wall surface of the rotating drum. The baffle portion has one end on the opening side of the rotating drum and the other end on the inner bottom wall surface side of the rotating drum, and is between the one end of the baffle portion and the opening side end of the inner peripheral wall surface of the rotating drum. Is formed to be longer than the distance between the other end of the baffle portion and the inner bottom wall surface of the rotating drum.
[0011]
In the washing / drying machine according to one aspect of the present invention, the distance between the other end of the baffle portion and the inner bottom wall surface of the rotating drum is relatively short. For this reason, it can prevent staying in the state where the laundry was sandwiched between the baffle portion and the inner bottom wall surface of the rotating drum in the drying step. Thereby, the tumbling operation | movement of the laundry can be smoothly performed also in a drying process.
[0012]
In particular, when the high-speed rotation dehydration process is completed, the state of the rotary drum that has been conventionally used to eliminate the state where the laundry is sandwiched between the baffle portion and the inner bottom wall surface of the rotary drum and loosen the laundry. It is not necessary to perform forward and reverse low-speed rotation before the drying step, or the time for performing the low-speed rotation can be shortened.
[0013]
In the washing / drying machine according to one aspect of the present invention, it is preferable that the other end of the baffle portion substantially contacts the inner bottom wall surface of the rotating drum and has a shape along the inner bottom wall surface of the rotating drum.
[0014]
In this case, since the laundry cannot be sandwiched between the baffle portion and the inner bottom wall surface of the rotating drum in the drying process, the factor that hinders the tumbling operation of the laundry can be more effectively eliminated.
[0015]
In the washer / dryer according to one aspect of the present invention, the opening of the rotary drum preferably includes an inner wall surface having an inner diameter smaller than that of the inner wall surface.
[0016]
In this case, in the high-speed rotation dehydration process, the laundry positioned on the inner wall surface with a small inner diameter is rotated from the vicinity of the opening of the rotary drum, that is, from the glass window side of the open / close door, by the centrifugal force generated by the rotation of the drum. Try to move toward the inner wall of the drum. At this time, since the distance between the one end of the baffle portion and the end of the inner peripheral wall surface of the rotating drum is relatively long, the laundry is not obstructed by the baffle portion. It can move to the inner peripheral wall surface of the rotating drum. For this reason, in the dehydration step, it is possible to prevent the laundry from moving firmly to the glass window without being able to move to the inner peripheral wall surface of the rotating drum, and to reduce the degree of tangling between the laundry. . Thereby, in the drying process after the dehydration process, the laundry can smoothly perform the tumbling operation on the inner peripheral wall surface of the rotating drum having a large inner diameter and can prevent the laundry from being damaged.
[0017]
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 rotating drum has an inner peripheral wall surface at the center in the rotation axis direction, an opening at one end, and an inner bottom wall surface at the other end. The inner bottom wall surface of the rotating drum is provided with a covering portion that covers at least a part of the inner bottom wall surface and that has a substantially flat surface facing the opening.
[0018]
In the washing / drying machine according to another aspect of the present invention, even if a concavo-convex surface is formed on the inner bottom wall surface of the rotating drum in order to attach a structural part or the like that supports the rotating drum and support the load, A covering portion is provided so as to cover the uneven surface. Thereby, the bottom part of the rotating drum is flattened. Therefore, it is possible to avoid the situation where the laundry enters the uneven surface of the inner bottom wall surface and the laundry is twisted and entangled. Can be reduced. As a result, the laundry can be prevented from being damaged.
[0019]
In one aspect or another aspect of the present invention, when the rotation axis of the rotating drum is inclined downward from the opening toward the inner bottom wall surface, the above-described effects can be achieved more advantageously. Can do.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
[0021]
FIG. 1 is a sectional view showing a schematic structure of a drum-type washing / drying machine as one embodiment of the present invention. As shown in FIG. 1, the washing / 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.
[0022]
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. A glass window 30 is attached to the inside of the open / close door 11. The glass window 30 is made of transparent glass, and has a so-called basin shape in which the center is recessed. The inside of the rotating drum 50 can be seen through the glass window 30. 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.
[0023]
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 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. 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.
[0024]
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.
[0025]
FIG. 2 is a schematic cross-sectional view of the rotary drum 50 attached to the washing / drying machine 1 shown in FIG. 1, and FIG. 5 is a schematic end cross-sectional view taken along line VV of FIG. As shown in FIGS. 1 and 2, a plurality of baffles 57 are attached to the inner peripheral surface of the drum body 52, which is the inner peripheral wall surface of the rotary drum 50, so as to protrude in the radial direction of the rotary drum 50. . The baffle 57 extends between the opening 55 and the drum bottom 51 in the rotation axis direction of the rotary drum 50 and has one end on the opening 55 side and the other end on the drum bottom 51 side. 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. One end of the baffle 57 is located on the inner peripheral wall surface of the drum cylinder 52 at a certain distance from the drum lid 53, and the other end is in a position almost in contact with the inner bottom wall surface of the drum bottom 51, along the inner bottom wall surface. Have a different shape. As shown in FIG. 5, for example, three baffles 57 a, 57 b, 57 c protrude from the inner peripheral wall surface of the drum body 52 in the radial direction of the rotary drum 50 and are arranged at intervals in the circumferential direction.
[0026]
A drum bottom cover member 59 is attached so as to cover at least a part or the entire inner bottom wall surface of the rotating drum 50. The drum bottom cover member 59 has a substantially flat surface facing the opening 55. The drum bottom cover member 59 flattens the inner bottom portion of the rotary drum 50.
[0027]
A coating layer containing fluorine may be formed on the inner peripheral wall surface and the inner bottom wall surface of the rotating drum 50. In this case, a stainless steel plate having a fluorine-containing coating layer formed on at least one surface may be processed to form coating layers on the inner peripheral wall surface and inner bottom wall surface of the rotating drum 50. The coating layer may be formed only on the inner peripheral wall surface of the drum cylinder 52.
[0028]
FIG. 7 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. 7, an operation panel 90 including an operation unit and a display unit is provided on the upper front portion 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.
[0029]
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.
[0030]
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.
[0031]
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.
[0032]
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.
[0033]
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.
[0034]
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.
[0035]
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.
[0036]
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 the drying heater 140 is energized, and hot air is sent into the water tank 40 and the rotating drum 50. 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 The hot air of high temperature and high humidity enters the dehumidifying heat exchanger 180 from the exhaust port 170 provided in the lower part of the water tank 40 and is dehumidified by heat exchange with the cooling water sprayed from the cooling water nozzle 190. And dried to 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.
[0037]
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.
[0038]
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.
[0039]
In the drying process described above, the laundry in the rotating drum 50 is lifted to the vicinity of the inner peripheral wall surface at a high position in the rotating drum 50 by the centrifugal force and the baffle 57 due to the rotation of the rotating drum 50, and then the laundry is united by its own weight. The tumbling operation of falling 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.
[0040]
In the embodiment of the present invention, as shown in FIGS. 1 and 2, the other end of the baffle 57 is in a position substantially in contact with the inner bottom wall surface of the drum bottom 51 and has a shape along the inner bottom wall surface. For this reason, there is no gap between the other end of the baffle 57 and the inner bottom wall surface of the drum bottom 51 so that a relatively small laundry is sandwiched therebetween. As a result, as shown in FIG. 2, even if the laundry 501 is located near the inner bottom wall surface of the drum bottom 51 after the high-speed final dewatering process is completed, it remains in the vicinity of the inner bottom wall surface in the subsequent drying process. The tumbling operation of the laundry 501 is performed smoothly as indicated by the arrows. As a result, the laundry can be dried uniformly and the laundry cloth and the like can be prevented from being damaged.
[0041]
FIG. 6 is a schematic cross-sectional view of a conventional rotating drum 50A. As shown in FIG. 6, the baffle 58 </ b> A is provided so as to be positioned approximately at the center between the drum lid 53 and the drum bottom 51. For this reason, if the laundry 505 is located near the inner bottom wall surface of the drum bottom 51 after the high-speed final dehydration process is completed, the laundry 505 is not contained in the baffle 58A and the drum bottom 51 even if the drying process is started. It stays in a state of being sandwiched between the bottom wall surface. Thereby, since the tumbling operation of the laundry 505 is hindered, the drying process may be completed in a state where there is a part that is not partially dried.
[0042]
As shown in FIG. 6, after the high-speed final dewatering step is completed, the laundry 505 is dried to loosen the so-called laundry in order to eliminate the state where the laundry 505 is sandwiched between the baffle 58A and the inner bottom wall surface of the drum bottom 51. Conventionally, the rotating drum 50A is rotated at a low speed forward and reverse before the process. However, in the embodiment of the present invention, even if the laundry 501 is located in the vicinity of the inner bottom wall surface of the drum bottom 51 after the high-speed final dewatering step is completed as shown in FIG. Since it does not stay near the inner bottom wall surface, it is not necessary to perform the step of loosening the laundry, or the time for performing the step can be shortened. As a result, efficient drying can be performed.
[0043]
Further, in the embodiment of the present invention, as shown in FIGS. 1 and 2, the uneven surface is covered with the drum bottom cover member 59, and the inner bottom portion of the rotating drum 50 is flattened. As a result, as shown in FIG. 2, even if the laundry 501 is located near the inner bottom wall surface of the drum bottom 51 after the high-speed final dehydration process is completed or during the drying process, the uneven surface of the inner bottom wall surface The laundry 501 is smoothly tumbled as shown by the arrows without entering and twisting the laundry, and the tangling of the laundry can be reduced. As a result, the laundry cloth or the like can be prevented from being damaged.
[0044]
On the other hand, in the conventional rotating drum 50A, as shown in FIG. 6, when the laundry 505 is located near the inner bottom wall surface of the drum bottom 51 after the high-speed final dewatering step is completed or in the drying step, There is a case where the laundry enters the uneven surface and twists the laundry to increase the entanglement. For this reason, the tumbling operation of the laundry 505 may be hindered, and the laundry may be entangled or the laundry cloth or the like may be damaged.
[0045]
FIG. 3 is a cross-sectional view showing a schematic structure of a drum type washer / dryer according to another embodiment of the present invention. 4 is a schematic sectional view of the rotary drum 50 attached to the washing / drying machine 1 shown in FIG. 3, and FIG. 5 is a schematic end sectional view taken along the line V-V in FIG. As shown in FIGS. 3 and 4, a plurality of baffles 58 are attached to the inner peripheral surface of the drum body 52 that is the inner peripheral wall surface of the rotary drum 50 so as to protrude in the radial direction of the rotary drum 50. . The baffle 58 extends between the opening 55 and the drum bottom 51 in the rotation axis direction of the rotary drum 50, and has one end on the opening 55 side and the other end on the drum bottom 51 side. The distance between one end of the baffle 58 and the end of the inner peripheral wall surface of the drum body 52 on the opening 55 side is longer than the distance between the other end of the baffle 58 and the inner bottom wall surface of the drum bottom 51. Is formed. For example, at the upper part of the baffle 58 far from the inner peripheral wall surface, one end is from the end on the opening 55 side of the inner peripheral wall surface of the drum cylinder 52, that is, from the drum lid 53 to the inner side of the drum cylinder 52. Located on the peripheral wall surface, the other end is positioned on the inner peripheral wall surface of the drum cylinder 52 spaced from the inner bottom wall surface of the drum bottom 51 by a distance B. A distance A between one end of the baffle 58 and the drum lid 53 of the rotating drum 50 is longer than a distance B between the other end of the baffle 58 and the inner bottom wall surface of the drum bottom 51 of the rotating drum 50. In other words, the center position of the length of the baffle 58 along the rotation axis direction of the rotating drum 50 is compared with the center position of the length of the inner peripheral wall surface of the drum cylinder 52 along the rotation axis direction of the rotating drum 50. Located on the inner bottom wall surface side of the drum bottom 51 of the rotary drum 50. The above-described limitations regarding the baffle 58 also apply to the baffle 57 shown in FIGS. 1 and 2, and the distance B is almost zero in the baffle 57. As shown in FIG. 5, for example, three baffles 58 a, 58 b, 58 c protrude from the inner peripheral wall surface of the drum drum 52 in the radial direction of the rotating drum 50 and are arranged at intervals in the circumferential direction.
[0046]
As shown in FIGS. 3 and 4, the opening 55 has an inner wall surface having 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. As an effect brought about by the shape of the drum lid 53, as shown in FIG. 4, the laundry 503 located near the drum lid 53 by the centrifugal force due to the rotation of the rotary drum 50 in the final dehydration process of high-speed rotation, An attempt is made to move in the direction away from the glass window 30 toward the inner peripheral wall surface of the drum drum 52 of the rotary drum 50 having a large inner diameter as indicated by an arrow. In the embodiment of the present invention, since the distance A between the one end of the baffle 58 and the drum lid 53 of the rotary drum 50 is relatively long, the laundry 503 is hindered by the baffle 58. And can move to the inner peripheral wall surface of the drum cylinder 52. On the other hand, as shown in FIG. 6, in the conventional rotating drum 50A, the laundry 504 is obstructed by one end of the baffle 58A and cannot move to the inner peripheral wall surface of the drum body 52, but goes to the glass window 30. In some cases, the direction returns as indicated by an arrow, and the surface of the glass window 30 or the door packing 80 may come into strong contact. In the embodiment of the present invention, it is possible to avoid the laundry from contacting the glass window or the door packing, and to reduce the degree of tangling between the laundry. As a result, a smooth tumbling operation can be performed on the inner peripheral wall surface of the drum drum 52 of the rotary drum 50 having a large inner diameter, uniform drying without unevenness, and prevention of damage to the laundry. it can.
[0047]
Further, in the embodiment of the present invention, as shown in FIGS. 3 and 4, the uneven surface is covered by the drum bottom cover member 59 and the inner bottom portion of the rotary drum 50 is flattened. The same effects as those of the embodiment shown in FIG.
[0048]
In the embodiment of the present invention, the distance B between the other end of the baffle 58 and the inner bottom wall surface of the drum bottom 51 of the rotary drum 50 is relatively short. For this reason, there is no gap between the other end of the baffle 57 and the inner bottom wall surface of the drum bottom 51 so that a relatively large laundry is sandwiched therebetween. As a result, as shown in FIG. 4, even if the laundry 502 is located near the inner bottom wall surface of the drum bottom 51 after the high-speed final dehydration process is completed, it remains in the vicinity of the inner bottom wall surface in the subsequent drying process. The tumbling operation of the laundry 502 is smoothly performed as indicated by the arrows. As a result, the laundry can be dried uniformly and the laundry cloth and the like can be prevented from being damaged.
[0049]
In the above two embodiments, when a coating layer containing fluorine is formed only on the inner bottom wall surface of the rotating drum 50, or on the inner peripheral wall surface and the inner bottom wall surface, the following operational effects can be obtained.
[0050]
In the drying process, friction between the laundry and the inner peripheral wall surface of the rotary drum 50 can be reduced during the tumbling operation of the laundry. For this reason, the laundry can be uniformly dried.
[0051]
In addition, it is possible to prevent a phenomenon in which the laundry sticks to the inner peripheral wall surface of the rotary drum 50 and does not fall after the final spin-drying step. For this reason, in order to prevent the laundry from sticking in the dehydration process, the rotational speed of the rotating drum in the dehydration process is increased step by step, and in order to loosen the laundry after the dehydration process, it is reduced in the reverse direction. There is no need to lengthen the time for rotating the rotating drum at a speed. As a result, it is possible to significantly reduce the time for all processes.
[0052]
Furthermore, the rotation speed of the rotating drum in the dehydration process can be increased. For this reason, since the degree of dehydration of the laundry is improved, the drying time can be shortened and an energy saving effect can be obtained.
[0053]
In any of the above embodiments, the baffles 57 and 58 are attached to the rotating drum 50, but may be configured integrally with the rotating drum 50. The baffles 57 and 58 may be configured so that they can be attached and detached to change the attachment position of the rotary drum 50 in the rotation axis direction. In particular, the baffle 58 is configured to be able to change the distance A between one end and the drum lid 53 of the rotating drum 50 and the distance B between the other end and the inner bottom wall surface of the drum bottom 51 of the rotating drum 50. It may be. The drum bottom cover member 59 may be fixed to at least a part or the entire inner bottom wall surface of the rotary drum 50, or may be configured integrally with the rotary drum 50. Alternatively, the drum bottom cover member 59 may be attached to the inner bottom wall surface so as to be rotatable with respect to the rotary drum 50. The material of the baffles 57 and 58 and the drum bottom cover member 59 may be a synthetic resin or a metal such as stainless steel.
[0054]
As shown in the above embodiment, when the rotation axis of the rotary drum 50 is inclined downward from the opening 55 toward the drum bottom 51, the operational effects of the present invention can be achieved more advantageously. The rotation axis of the rotary drum 50 may be substantially horizontal.
[0055]
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.
[0056]
【The invention's effect】
As described above, according to the present invention, since the tumbling operation of the laundry can be smoothly performed in the drying process after the dehydration process, the drying performance can be improved in the laundry 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 schematic cross-sectional view of a rotating drum attached to the washing / drying machine shown in FIG.
FIG. 3 is a cross-sectional view showing a schematic structure of a drum-type washing and drying machine as another embodiment of the present invention.
4 is a schematic cross-sectional view of a rotating drum attached to the washing / drying machine shown in FIG. 3;
FIG. 5 is a schematic end sectional view taken along line VV in FIG. 2 or FIG. 4;
FIG. 6 is a schematic cross-sectional view of a conventional rotating drum.
FIG. 7 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: Washer / dryer, 40: water tank, 50: rotating drum, 51: drum bottom, 52: drum drum, 53: drum lid, 55: opening, 57, 58: baffle, 59: drum bottom cover member.

Claims (4)

A water tank, and a rotating drum that rotates in the water tank to wash, rinse, dehydrate and dry the laundry therein,
The rotating drum has an inner peripheral wall surface at the center in the rotation axis direction, an opening at one end, and an inner bottom wall surface at the other end,
The inner peripheral wall surface of the rotating drum is provided with a baffle portion that protrudes in the radial direction of the rotating drum and extends in the rotation axis direction of the rotating drum between the opening and the inner bottom wall surface,
The baffle portion has one end on the opening side of the rotating drum and the other end on the inner bottom wall surface side of the rotating drum, and the one end of the baffle portion and the opening side of the inner peripheral wall surface of the rotating drum. The distance between the other end of the baffle portion and the inner bottom wall surface of the rotary drum is longer than the distance between the other end of the baffle portion and the washing / drying machine. The washing / drying machine according to claim 1, wherein the other end of the baffle portion substantially contacts the inner bottom wall surface of the rotating drum and has a shape along the inner bottom wall surface of the rotating drum. The washing / drying machine according to claim 1, wherein the opening of the rotating drum includes an inner wall surface having an inner diameter smaller than the inner wall surface. A water tank, and a rotating drum that rotates in the water tank to wash, rinse, dehydrate and dry the laundry therein,
The rotating drum has an inner peripheral wall surface at the center in the rotation axis direction, an opening at one end, and an inner bottom wall surface at the other end,
The washing and drying machine, wherein the inner bottom wall surface of the rotating drum is provided with a covering portion that covers at least a part of the inner bottom wall surface and that has a substantially flat surface facing the opening.

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