JP2008194258A - Drum type washing-drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve the high-quality finishing state of laundry with sufficient smoothing of the twining and twisting deeply engraved in the laundry after a spin-drying step and with few wrinkles. <P>SOLUTION: A rotary drum 4 formed in a bottomed cylindrical shape is set inside a water tub in such a way that the direction of the rotating axis is horizontal or inclined downward from the horizontal direction from the opened front side to the back side as the bottom. The washing machine has a forward/reverse arc rotation driving mode in which the forward arc rotation and reverse arc rotation of a rotary drum 4 formed in a bottom cylindrical shape at an angle larger than 90 degrees and smaller than 200 degrees are alternately repeated under the above condition. The purpose is achieved by executing the forward/reverse arc rotation driving mode in the drying process. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In the present invention, a rotating drum formed in a bottomed cylindrical shape is installed in a water tank so that the direction of the rotation axis is horizontal or inclined downward from the horizontal direction from the front side to the open side to the back side as the bottom. The present invention relates to a drum-type washing and drying machine for washing and drying laundry stored in the rotating drum by rotationally driving the rotating drum.

  Referring to FIG. 1 showing an embodiment of the present invention, such a drum type washing and drying machine is a rotating drum in which a large number of holes 3 are formed in a water tank 2 supported by a suspension structure in a housing 1. 4, the rotating drum 4 is driven to rotate by a motor 5, and a front opening of the water tank 2 and a front opening of the rotating drum 4 are opened by opening a door 6 that can be opened and closed on the front side of the housing 1. The laundry can be taken in and out of the rotary drum 4 through the water supply system 7, the drainage system 11, and the blower 12, and the air in the water tank 2 and the rotary drum 4 is sucked and dehumidified and heated in order to dry. A drying system 13 that repeatedly blows air into the water tank 2 and the rotating drum 4 is provided.

  In the conventional normal washing and drying mode, when the door 6 is opened and the laundry is put into the rotating drum 4 and the operation is started with the introduction of the detergent, the water tank 2 is supplied with water from the water supply system 7, The supplied water is supplied to the rotating drum 4 through the hole 3 in the required amount. When the rotary drum 4 is rotationally driven by the motor 5 at a predetermined rotational speed, the laundry stored in the rotary drum 4 is hooked on the stirring protrusion 8 provided on the inner peripheral surface of the rotary drum 4 and lifted in the rotational direction. When the laundry is dropped from an appropriate height, washing is performed by applying a washing action to the laundry. After this washing process, the dirty washing water is drained by the drainage system 11, and the rinsing process is performed using the newly supplied water. When the rinsing process is completed, the rotating drum 4 is rotated at a high speed and the dewatering process is performed. Is done. When the dehydration process is completed, the laundry in the water tank 2 and the rotary drum 4 is dehumidified and heated in order by the drying system 13 with stirring by the rotation of the rotary drum 4 to circulate the dried laundry. These steps are automatically executed based on a predetermined control procedure.

By the way, it is already a technical problem that the laundry is entangled and stuck by continuous rotation of the washing process and the rinsing process, in particular, continuous rotation of the rotating drum at a high speed of, for example, 1000 rpm in the dehydration process (for example, Patent Document 1), Patent Document 1 utilizes the improvement in the degree of freedom of rotation control by direct coupling drive by a motor of the rotating drum, and the rotating drum is rotated within a minute rotation angle of 90 degrees or less after the dehydration step, particularly 10 degrees. By rotating forward and backward multiple times at a minute rotation angle of less than 30 degrees above, the laundry stuck in the rotating drum can be peeled off or the laundry that has been hardened at the upper part in the rotating drum can be unraveled. Further, it discloses a technique that can further eliminate imbalance during dehydration and improve the ease of taking out laundry after drying.
JP 2000-254385 A

  However, forward and reverse alternating minute angular rotation performed by the technique described in Patent Document 1 after the dehydration step is performed at a speed of about 55 rpm at which the laundry as disclosed in the examples can be sufficiently adhered to the inner surface of the rotating drum. However, it is only necessary to rotate forward and backward a plurality of times within a minute rotation angle of 90 degrees or less, particularly at a minute rotation angle of 10 degrees or more and less than 30 degrees. Since it cannot be performed at a constant speed, only the area below the small angle in the middle is the predetermined speed, and before and after that, the speed increases toward the predetermined speed or decelerates from the predetermined speed, so the laundry is lifted only to a position below the small angle. I can't. As a result, even if there is a sudden deceleration due to braking at the end of the minute angle rotation and the forced peeling force from the inner surface of the rotating drum acts due to the inertia of the laundry, the laundry rotates because it is in the direction against gravity. The tendency to slide down rather than peel off in the direction away from the inner surface of the drum becomes stronger. Accordingly, the laundry that slides down is moved in the sliding-down direction by the next minute rotation of the rotating drum in the opposite direction. This is repeated thereafter, but the laundry is swung to the left and right with a sliding slip on the final side by forward / reverse rotation of the rotating drum at a small angle, so the position of the laundry is not changed so much. Even if the sticking to the inner surface of the rotating drum can be eliminated, the debris can be removed in the dehydration process. As shown in FIGS. 7 (a) and 7 (b), the tangling, twisting, and twisting in the washing process and the rinsing process are strongly pressed against the inner surface of the rotating drum and stuck to the laundry. Unraveling effect is not enough.

  For this reason, the effect of untangling and twisting is not sufficient, and even though there is an agitation action due to the rotation of the rotating drum to execute the drying process, the air permeability to the laundry is poor and drying unevenness is caused. Inefficient and takes time to dry. Moreover, the entanglement, twisting, and wrinkles of the laundry when the process moves to the drying process remain without being improved so much, and the finished state does not increase so much.

  An object of the present invention is to provide a drum-type washing and drying machine capable of obtaining a high finished state with little wrinkles accompanied by sufficient entanglement and twisting of the laundry after dehydration.

In order to achieve the above object, a drum type washing and drying machine according to the present invention has a rotating drum that is formed in a bottomed cylindrical shape and is driven to rotate by a motor from a front side that opens to a rear side that is a bottom. Drum-type washing and drying machine having a control device that is installed in a water tank so that the direction is horizontal or inclined downward from the horizontal direction, and controls the motor and the like to execute each step of washing, rinsing, dehydration, drying, etc. In the drying process, the control device causes the rotating drum to rapidly rotate by rapidly driving the motor, and the laundry is applied to the inner surface of the rotating drum by centrifugal force due to the rapid arc rotation of the rotating drum. When the laundry is stuck and lifted from the lowest position of the rotating drum to a position exceeding 90 degrees and less than 180 degrees, the laundry is suddenly braked and the inertia and self That the operations with peeled from the rotating drum inner surface to fall on the side lifting side opposite to the lower range of the rotary drum, and the normal and reverse pivot rotation drive mode in which return Shi performed repeatedly in forward and reverse alternately to run by Is one of the features.

According to this feature, the execution of normal and reverse pivot rotation drive mode, by sticking the washing濯物the rotary drum inner surface Lift from the lowermost position to less than 180 degrees beyond the maximum 90 degrees, laundry operations laundry occurs the braking state by the sudden braking in the final stage of lifting of the object falls on the opposite side of the lifting side of the lower range of rotary drum while being peeled off forcibly from the rotating drum inner surface by its inertia and own weight Can be reliably achieved , and the lifting and falling positions of the laundry can be alternated between left and right in each arc rotation drive by forward and reverse alternating rapid arc rotation drive, so that the laundry unraveling action can be enhanced, and mechanical force Can affect the laundry. Therefore, by executing this forward / reverse arc rotation drive mode in the drying process, even laundry that has been lightened by dehydration can be stuck to the inner surface of the rotating drum by sudden forward arc rotation and sudden reverse release of the rotating drum. Taking full advantage of the behavior of lifting to a predetermined position, peeling off by inertia and its own weight, and dropping by its own weight, the laundry becomes stronger against the inner surface of the rotating drum in the state of twisting, twisting and twisting at the end of the washing process and rinsing process in the dehydration process There is a tendency to push and stick and to be strongly crushed by high-dissolving action that involves alternating left and right of the lifting position and dropping position of the laundry, and thereby changing the left and right of the laundry, and the action of mechanical force It is possible to allow dry hot air to reach the laundry while smoothly untangling and twisting the laundry. It can be in.

The control device, by characterized in that the maximum rotational speed of the rotary drum during the forward and reverse pivot rotation in normal and reverse pivot rotation drive mode, and the above 50 rpm, laundry in the normal and reverse pivot rotation drive mode Can be reliably lifted to the arc rotation position and dropped to the opposite side.

The control device, by which is characterized in that the initial arc rotation was carried out at less than 180 degrees 120 degrees, 180 degrees near the subsequent pivot rotation of the rotating drum in normal and reverse pivot rotation drive mode, the initial Ensure that the laundry that is stationary in the lower part of the rotating drum during arc rotation is lifted to the upper part of the left and right initial arc rotating side by the arc rotation of 120 to 180 degrees and dropped to the opposite side of the rotating drum. , pivot rotation of later left and right whereas laundry fell displaced in the side of the rotary drum as near 180 degrees lifting the top the same side of the rotary drum to reliably achieve the behavior to drop to the left and right opposite sides of the rotary drum be able to.

According to the present invention, in the drying step, it is Kyuko rotating the rotary drum by causing rapid driving of the motor, rotary drum laundry by centrifugal force that by the sudden pivot rotation of the rotary drum may stick to the rotating drum inner surface when lifted to a position of less than 180 degrees beyond the maximum 90 degrees from the lowermost position of the abrupt braking of the rotation of the motor, the rotary drum together with the laundry is the rotating drum inner surface or et peeling by its inertia and own weight By executing the forward / reverse arc rotation drive mode in which the action of dropping to the opposite side to the lifting side of the lower range of the upper and lower areas is executed alternately in the forward and reverse directions, the laundry lifting position and the falling position are alternately turned left and right at each arc rotation. Can be replaced. Therefore, the unraveling action of the laundry can be enhanced to prevent twisting and sticking to the inner surface of the rotating drum as well as entanglement, and the laundry can be easily taken out and wrinkles can be greatly reduced . In particular, by executing such a normal and reverse pivot rotation drive mode in the drying step, the laundry washing process in the dehydration step, tangling rinsing time step is completed, twisted, strongly pressed against the rotary drum inner surface in a state than wrinkles The tendency to be stuck and strongly crushed is that the laundry is lifted and dropped alternately and left and right alternately, and the laundry is replaced by left and right, resulting in a high level of unwinding and mechanical force. It is possible to allow dry high-temperature air to reach the laundry while smoothly untangling and twisting the objects. Can be reproduced, so the finished state can be greatly enhanced.

  Hereinafter, a drum-type washing and drying machine according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6 for understanding of the present invention. In addition, the following description is a specific example of this invention, Comprising: The content of description of a claim is not limited.

  The drum type washing and drying machine of the present embodiment has the basic configuration described above, and is controlled by a control device such as a control board 9 equipped with a microcomputer in accordance with mode setting and control program from the operation panel 14 shown in FIG. 5. It has a function of automatically controlling the water supply system 7, the drainage system 11, and the drying system 13 to perform at least a cleaning process, a rinsing process, and a drying process. The water supply system 7 can supply water in a timely manner as indicated by a solid arrow by opening and closing the electromagnetic valve, and the water supply can be used to supply the detergent in the detergent container into the water tank 2 in a timely manner. The drainage system 11 can drain as shown by a one-dot chain line arrow when necessary, such as at the end of the washing process or at the end of the rinsing process, by opening and closing the electromagnetic valve. The drying system 13 is a waste thread in the air introduced from the water tank 2 and the rotating drum 4 in a circulation path in which the air in the water tank 2 and the rotating drum 4 is circulated by the blower 12 as indicated by the broken-line arrows shown in FIGS. A filter 15 that collects and removes dust, a dehumidifying part 16 that dehumidifies the introduced air after dust removal, and a heating part 17 that heats the air after dehumidification to make dry high-temperature air. Located downstream, it is less susceptible to moisture. In the illustrated example, the dehumidifying unit 16 and the heating unit 17 are an evaporator and a condenser that circulate refrigerant through a compressor 18 and exchange heat with circulating air, and constitute an air conditioner 19. However, it is not limited to this.

  The rotating drum 4 is installed with the motor 5 on the water tank 2 directly connected to the rotating shaft 4a, and along with the water tank 2, the rotating shaft direction is inclined from the horizontal direction to the angle θ = 20 ± 10 degrees from the opening side to the bottom side. However, compared with the case of installation in the horizontal direction, even if the rotary drum 4 is installed at the same height, the laundry can be easily put in and out without taking an unreasonable posture in which the opening is inclined upward. In particular, from the experience of the present inventors, by setting the inclination angle θ to 20 ± 10 degrees, even if there is a difference in height from a child (excluding infants) to an adult, even a wheelchair user, laundry It is possible to obtain a state in which the operation of loading and unloading is most easily performed. Further, there is an advantage that a deep water storage state can be obtained even with a small amount of water because water supplied into the rotating drum 4 is accumulated on the back side.

  However, as described above, since the dehydration process is performed by continuous rotation at a high speed of, for example, 1000 rpm, the laundry is entangled, twisted, and twisted in the washing process and the rinsing process. Since it is attached to the inner surface and brazed, it is difficult to take out the laundry, and post-processing is troublesome. In addition, it is easy to leave hard wrinkles on the laundry, and it takes a lot of time to remove the wrinkles.

  In order to cope with this, in the present embodiment, the control board 9 is used for the bottomed cylindrical rotary drum 4 installed so that the rotation axis direction is inclined downward from the horizontal direction from the opening side toward the bottom side. With respect to drive control, a forward / reverse arc rotation drive mode in which arc rotation of more than 90 degrees and less than 200 degrees is repeatedly executed alternately in the forward and reverse directions is provided, and the forward / reverse arc rotation drive mode is executed in the drying process.

  With respect to the forward / reverse arc rotation drive mode, the movement of the laundry 21 at that time will be described with reference to FIG. In addition, this FIG. 4 is a schematic diagram for demonstrating the motion of the actual laundry 21, and does not limit the content of description of a claim. In such a forward / reverse arc rotation drive mode, the laundry 21 shown in FIG. 4 is illustrated by circled reference numerals 2, 4, and 6 in FIG. 4A due to the arc rotation of the rotating drum 4 exceeding 90 degrees and less than 200 degrees. The position is lifted from the broken line position to the solid line position by more than 90 degrees and less than 180 degrees.

  First, after the circled symbol 1 in FIG. 4A, at the start, as shown by the circled symbol 2 in FIG. 21 is attached to the inner surface of the rotating drum 4 and lifted. After that, as shown by a circled symbol 3 in FIG. 4A, sudden braking is applied to suddenly decelerate to a position of 165 degrees in the forward rotation direction. At this time, the laundry 21 is peeled off from the inner surface of the rotary drum 4 due to its inertia and its own weight when the rotational speed of the rotary drum 4 becomes 50 rpm or less, that is, in the vicinity of 135 degrees in the forward rotation direction. Falls towards the side opposite the lifting side. Thereafter, the rotating drum 4 rotates to near 165 degrees in the forward rotation direction due to inertia, whereby the laundry 21 rotates to near 15 degrees in the forward rotation direction.

  Next, as indicated by a circled symbol 4 in FIG. 4A, the laundry 21 is rapidly accelerated to about 85 degrees in the reverse rotation direction, that is, 50 rpm or more by rotating in the reverse rotation direction 100 degrees. Stick and lift. Thereafter, as indicated by a circled symbol 5 in FIG. 4A, sudden braking is applied and the vehicle decelerates rapidly to a position of 165 degrees in the reverse direction. At this time, the laundry 21 is peeled off from the inner surface of the rotating drum 4 due to its inertia and its own weight when the rotational speed of the rotating drum 4 becomes 50 rpm or less, that is, around 135 degrees in the reverse rotation direction. Drop toward the side opposite the lifting side. Thereafter, the rotary drum 4 rotates to 165 degrees in the reverse rotation direction due to inertia, whereby the laundry 21 rotates to near 15 degrees in the reverse rotation direction.

  Further, as indicated by a circled symbol 6 in FIG. 4A, the laundry 21 is rapidly accelerated to about 85 degrees in the forward rotation direction, that is, at a rotation speed of 100 degrees in the forward rotation direction to 50 rpm or more. Stick it on and lift it. After that, as shown by a circled symbol 3 in FIG. 4A, sudden braking is applied to suddenly decelerate to a position of 165 degrees in the forward rotation direction. At this time, the laundry 21 is peeled off from the inner surface of the rotary drum 4 due to its inertia and its own weight when the rotational speed of the rotary drum 4 becomes 50 rpm or less, that is, in the vicinity of 135 degrees in the forward rotation direction. Falls towards the side opposite the lifting side. Thereafter, the rotating drum 4 rotates to near 165 degrees in the forward rotation direction due to inertia, whereby the laundry 21 rotates to near 15 degrees in the forward rotation direction.

  That is, by performing this arc rotation drive in the order of circled signs 2, 4, 6, 4, 6,... Shown in FIG. 4 (a), the circled sign 3 shown in FIG. As shown in FIG. 5, the forced peeling force due to the inertia and dead weight applied to the laundry 21 due to the deceleration or braking state for reversal of rotation occurring at or near the solid line position that is the final point of lifting of the laundry 21. A parabola as shown by an arrow from the broken line position to the solid line position can be drawn from the inner surface of the rotating drum 4 by its own weight, and can be peeled off and dropped reliably and instantaneously. In addition, the lifting position and the falling position of the laundry 21 can be alternately switched left and right as shown in FIG. The mechanical force can be exerted on the laundry 21.

  As a result, the laundry 21 is lifted up to the upper left and right sides of the rotating drum 4 by rotating the arc of the rotating drum 4 alternately in the forward and reverse directions, and the laundry 21 is lifted or decelerated or braked in the vicinity thereof. The laundry 21 is lifted for each arc rotation by repeatedly and reliably peeling the laundry 21 from the inner surface of the rotating drum 4 by the forced peeling force and the own weight due to its inertia and its own weight and dropping it to the left and right sides of the rotating drum 4. The position and the fall position are switched alternately on the left and right sides, and the unwinding action of the laundry 21 is enhanced to prevent twisting and sticking to the inner surface of the rotating drum 4 as well as entanglement. The wrinkle can be greatly relieved. In addition, the number of times that the laundry 21 can be mechanically applied to the laundry 21 and the number of drops of the laundry 21 that has a scouring effect, a rinsing effect, and a wrinkle-stretching effect by slamming is greatly increased. Function in each process performed by the washing machine.

  Therefore, by executing such a forward / reverse arc rotation drive mode in the drying process, the laundry 21 is strongly entangled with the inner surface of the rotating drum 4 in the state of twisting, twisting, and wrinkling at the end of the washing process and the rinsing process in the dehydration process. Even if it is pressed and sticked strongly as shown in the state after dehydration in FIGS. 7A and 7B, the lifting position and the dropping position of the laundry 21 are alternately switched left and right, thereby The laundry 21 can be made to reach the laundry 21 with high-temperature dry air while smoothly unraveling and twisting the laundry by the high unraveling action with the left and right exchange between the laundry 21 and the action of mechanical force. The finished state can be greatly enhanced since the spread of the individual laundry 21 and the regeneration of the fibers can be achieved along with the extension of the lashes caused by the tapping action when the item 21 is dropped.

  Here, the arc rotation of the rotating drum 4 is driven and executed at a rapid speed at which the laundry 21 sticks to the inner surface of the rotating drum 4 up to 90 degrees, so that it becomes easy to fall due to the weight of the laundry 21 90. The laundry 21 does not slip to the arc rotation position due to the rapid speed at which the laundry 21 is pasted to the inner surface of the rotating drum 4 by about the same degree, so that inertia corresponding to the rotation speed of the rotating drum 4 is applied and the arc rotation ends. It can be reliably lifted to the position, and can be more reliably achieved at the time of the deceleration or change to the braking state.

  Further, the forward / reverse switching of the arc rotation direction of the rotating drum 4 is performed with a braking operation interposed therebetween, so that the arc rotation direction is suddenly changed in the forward / reverse direction even under the condition of satisfying the rapid acceleration that guarantees the sticking of the laundry 21. By reversing, it is possible to reliably achieve the peeling of the laundry 21 due to the high inertia and the dead weight at the time of the rapid acceleration at the final stage of the arc rotation, and to suppress the time loss of applying the mechanical force to the laundry 21. Therefore, entanglement and twisting can be prevented while obtaining the effects of each process of the washing and drying machine in a shorter time, and wrinkles can be reduced.

  In view of the behavior of the laundry 21 as described above, the forward / reverse arc rotation drive mode of the present embodiment is also configured such that the laundry 21 is placed on the inner surface of the rotary drum 4 by centrifugal force due to the sudden arc rotation of the rotary drum 4. After being pasted and lifted upward, it is possible to grasp that the lifted laundry 21 is peeled off from the inner surface of the rotating drum 4 due to its inertia and its own weight and dropped repeatedly in a forward and reverse manner.

  More preferably, the laundry 21 is attached to the inner surface of the rotating drum 4 by the centrifugal force caused by the rapid arc rotation of the rotating drum 4 and lifted up to the upper range of the rotating drum 4, and then the rotating drum 4 is suddenly braked. The driving of peeling the laundry 21 from the inner surface of the rotating drum 4 due to its inertia and its own weight and dropping it to the side opposite to the lifting side of the lower range of the rotating drum 4 is repeatedly executed alternately forward and reverse. In particular, in the drying process, since the laundry 21 is light by dehydration, the sticking to the rotating drum 4 is weakened. Therefore, it is preferable to secure the rotational speed of the rotating drum 4 to be attached for lifting. In some cases, it is preferable to increase the rotational speed of the rotating drum 4 than in the washing process or the rinsing process.

  Also in these cases, it is preferable to repeat the forward arc rotation and the reverse arc rotation of the rotating drum 4 at less than 200 degrees for the reasons described above, and it is best to perform the rotation at more than 90 degrees.

Here, in the rotating drum 4 having a diameter of about 500 ± 50 mm, when the gravity is decomposed into the drum center direction and the tangential direction, the drum rotation speed and the rotation speed in which the force in the center direction and the centrifugal force are balanced,
mrω ² = mg cos θ
As shown in FIG. 5, the result is as shown by a thick solid line indicated as “sticking level” shown in FIG. The circled code shown in FIG. 5 corresponds to the circled code shown in FIG. From the stop time indicated by the circled symbol 1 in FIG. 5 to the rotation speed of about 60 rpm in the vicinity indicated by the circled symbol 2, the laundry 21 is reliably attached. Further, the rotation angle θ of the rotating drum 4 necessary for this is less than 90 degrees, which satisfies the above-described conditions. In addition, in the above description, the lifting by sticking the laundry 21 is over 90 degrees of the rotating drum 4 and up to 180 degrees, but in this example, the rotation angle is around 165 degrees indicated by the circled reference numeral 2, Peel off from the inner surface of the rotating drum 4 due to inertia and its own weight acting on the laundry 21 by braking that stops at a rotation angle of about 165 degrees that reaches the circled sign 3 from around a rotation angle of 85 degrees and even a slight deceleration state due to braking. I understand that.

  From such calculation and experience, the maximum rotation speed of the arc rotation in the forward / reverse arc rotation drive mode is 50 rpm or more, and the laundry 21 is not peeled off or braking is performed at the maximum rotation speed. Effective by mode is obtained.

  Further, the laundry 21 can be peeled off in the forward / reverse arc rotation drive mode at a speed of less than 50 rpm using braking performed in a range of a rotation angle of 85 degrees to 165 degrees as shown in the illustrated example. Specifically, the forced peeling force and the gravity according to the deceleration to less than 50 rpm due to the inertia of the laundry 21 that tries to continue the rotation at 50 rpm or higher due to the deceleration state from the rapid arc rotation performed at 50 rpm or higher are stored in the laundry. 21 is dropped.

  Further, in the forward / reverse arc rotation drive mode, the initial arc rotation indicated by a circled symbol 2 in FIG. 4A is performed in the vicinity of 165 degrees as indicated by a broken line in FIG. 5, and FIG. The subsequent arc rotation shown in FIG. 5 is performed in the range of around 165 degrees to −15 degrees as shown by a solid line in FIG. As indicated by a broken line in the reference numeral 2, the laundry 21 that is stationary in the lower range of the rotary drum 4 is turned over 90 degrees to less than 200 degrees, specifically, around 160 degrees on the left and right initial arc rotation side. It is ensured that it is lifted up to the upper part (around 135 degrees) and dropped on the opposite side of the rotating drum 4, specifically on the diameter line of the rotating drum 4, and the subsequent arc rotation is around 180 degrees (around 165 degrees) As a range of around −15 degrees) Specifically, while the laundry 21 that has fallen by about 30 degrees is sandwiched between about -15 degrees of inertial rotation and arc-rotated to 165 degrees on the same side of the rotating drum 4, specifically about 135 The behavior of lifting to a position close to the angle and dropping to the opposite side of the rotating drum 4 can be reliably achieved by obtaining a maximum drop distance that is approximately symmetrical and that is the diameter of the rotating drum 4. Thereby, the effect of unraveling and hitting the laundry 21 can be enhanced.

  According to the inventor's confirmation, when the maximum rotation speed of the arc rotation in the forward / reverse arc rotation drive mode is less than 50 rpm, the laundry 21 is rotated by the rotating drum 4 in the rotational inertia acting on the laundry 21 by the braking of the rotating drum 4. The behavior of peeling off from the inner surface of the rotating drum 4 does not occur, and the laundry 21 rotates with the rotating drum 4 while being stuck to the inner surface of the rotating drum 4 even when the rotating drum 4 is reversed.

  Furthermore, when the rotation angle of the rotating drum 4 is 90 degrees or less, the laundry 21 cannot be lifted. When the rotation angle of the rotating drum 4 is 200 degrees or more, the laundry 21 is washed when the rotating drum 4 is reversed. The article 21 passes through the position of 180 degrees (the uppermost part), and the operation such that the laundry 21 as shown in FIG.

  By the way, in order to realize the forward / reverse arc rotation driving mode of the rotating drum 4 as described above, the driving load applied to the motor 5 is very large, which causes an increase in the number of poles of the motor 5. In the embodiment, as shown in FIGS. 1 and 3, the inner rotor 5b1 and the outer rotor 5b2 that are directly connected to the rotating shaft 4a with respect to the stator 5a fixed to the outer surface of the bottom of the water tank 2 are arranged on both the inner peripheral side and the outer peripheral side of the stator 5a. Thus, the stator 5a can be operated from the inner and outer circumferences, and the driving power can be doubled without the problem of an increase in the size of the motor 5. The small motor 5 can perform sudden forward arc rotation and sudden reverse arc rotation with sudden reversal. Alternating forward and reverse arc rotation drive modes can be executed without difficulty.

  As a result, a technology that can permanently execute the forward / reverse arc rotation drive mode with sudden reverse rotation between the sudden forward arc rotation and the sudden reverse arc rotation having a right / left balanced rotational speed characteristic as shown in FIG. 5 is realized. The laundry 21 is dropped at substantially the same position of the rotary drum 4 indicated by the circled signs 3 and 5 in both the normal rotation and the reverse rotation of the laundry 21, and from the time of the fall to the vicinity of −15 degrees of inertial rotation. After reaching the sticking area of the laundry 21 in the vicinity of the same rotation angle position 85 degrees (rotation of the rotating drum 4 is 85 + 15 = 100 degrees) across the rotation, the circled signs 4 and 6 at the same rotation angle θ. The laundry 21 is peeled off from the rotating drum 4 by the sudden braking after reaching the position. The required time from the peeling position indicated by the circled symbol 3 to the peeling position indicated by the circled symbol 5 is about 0.8 seconds, and from the peeling position indicated by the circled symbol 5 to the peeling position indicated by the circled symbol 3. The required time is about 0.8 seconds, and both are equal.

  When such a forward / reverse arc rotation drive mode is executed in the drying process, the striking action can be stretched, and entanglement and twisting of the individual laundry 21 as shown in FIGS. Each spreads softly, and even in thin fabric products, the finish is very high compared to the conventional case. With pile products, the piles stand without going to sleep, and non-woven fabric products are not scary.

  Although the motor 5 is powered up, excessive power-up is uneconomical. Therefore, when the motor 5 is driven by the first drum driving instruction and the step-out limit of the motor 5 is exceeded, the upper limit load is exceeded. The rotation of the rotating drum 4 can be obtained by driving the motor 5 in accordance with the second drum driving instruction not exceeding the range, so that the lifting and peeling behavior of the laundry 21 can be obtained as set, even if the driving load varies from time to time. The characteristics are guaranteed and the upper limit of power-up can be suppressed. For this purpose, for example, the rotational speed of the rotating drum 4 may be monitored and feedback controlled.

  Further, by making it possible to change the driving of the rotating drum 4 according to the elapsed time or the amount of the laundry 21, the laundry corresponding to a change in conditions such as drying due to the progress of drying or a difference in driving load depending on the amount of the laundry 21 The rotation drum 4 can be optimally driven, and the amount of laundry 21 and the driving load may be determined by various known detection methods.

  It is practically used in a drum-type washing / drying machine in which a rotating drum is installed in a horizontal direction or at an inclination, so that entanglements and twists that are strongly brazed after the dehydration process in the drying process can be eliminated, drying efficiency can be improved, and wrinkle removal can be performed.

It is sectional drawing which shows the principal part structure of the drum type washing-drying machine which concerns on embodiment of this invention. It is the rear view which looked at the inside of the drum type washing-drying machine of FIG. It is sectional drawing which shows the substantially half part of the motor attachment part of the drum type washing-drying machine of FIG. (A) Process drawing of the forward / reverse arc rotation drive mode in the drum type washing / drying machine of FIG. 1, (2) Explanatory drawing which shows right-and-left interchange of the lifting position and dropping position of the laundry. FIG. 2 is a rotation characteristic diagram with respect to the sticking and peeling of the laundry on the inner surface of the rotary drum for ideally realizing the forward and reverse arc rotation drive mode in the drum type washing and drying machine of FIG. 1. FIG. 6 is a copy diagram showing two state examples of the laundry after the forward / reverse arc rotation drive mode in the embodiment shown in FIG. 5 is performed in the drying step. It is a copy figure which shows two example states of the laundry after the spin-drying | dehydration process in the drum type washing machine which concerns on a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 2 Water tank 3 Hole 4 Rotating drum 5 Motor 6 Door 7 Water supply system 9 Control board 11 Drain system 12 Blower 13 Drying system 14 Operation panel

Claims (9)

The rotating drum formed in the bottomed cylindrical shape is installed in the water tank so that the rotation axis direction is inclined horizontally or horizontally downward from the opening front side toward the back side as the bottom,
A forward / reverse arc rotation drive mode that alternately repeats a sudden forward arc turning point and a sudden reverse arc rotation at 90 ° to less than 200 ° of the rotating drum, and the forward / reverse arc rotational drive mode is executed in a drying process. A drum-type washing and drying machine characterized by the above.   2. The drum type according to claim 1, wherein the arc rotation of the rotating drum is driven by a rapid acceleration at which the laundry adheres to the inner surface of the rotating drum until the laundry reaches about 90 degrees from the lowest position of the rotating drum. Washing and drying machine.   The drum-type washing and drying machine according to claim 1 or 2, wherein the forward / reverse switching of the arc rotation direction of the rotary drum is performed with an abrupt braking operation sandwiched between an arc rotation of the rotary drum exceeding 90 degrees and less than 200 degrees. The rotating drum formed in the bottomed cylindrical shape is installed in the water tank so that the rotation axis direction is inclined horizontally or horizontally downward from the opening front side toward the back side as the bottom,
The laundry is attached to the inner surface of the rotating drum by the centrifugal force generated by the rapid arc rotation of the rotating drum and lifted upward, and then the laundry is lifted by the inertia of the rotating drum due to the sudden braking of the rotating drum. A drum-type laundry drying system comprising a forward / reverse arc rotation drive mode in which the drive to be peeled off and dropped by its own weight is repeated in forward and reverse directions, and the forward / reverse arc rotation drive mode is executed in a drying process. Machine. The rotating drum formed in the bottomed cylindrical shape is installed in the water tank so that the rotation axis direction is inclined horizontally or horizontally downward from the opening front side toward the back side as the bottom,
After the laundry is attached to the inner surface of the rotating drum by the centrifugal force generated by the rapid arc rotation of the rotating drum and lifted up to the upper range of the rotating drum, the laundry is brought into the above-mentioned inertia by the sudden braking of the rotating drum. There is a forward / reverse arc rotation drive mode that repeats alternately forward / reverse driving that peels off the inner surface of the rotating drum and drops it to the side opposite to the lifting side of the lower range of the rotating drum by its own weight, and the forward / reverse arc rotation in the drying process A drum-type washing and drying machine characterized in that a drive mode is executed.   The drum-type washing and drying machine according to claim 4 or 5, wherein the forward arc rotation and the reverse arc rotation of the rotating drum are repeated more than 90 degrees and less than 180 degrees.   The drum-type laundry according to any one of claims 1 to 6, wherein the stop or inversion for forward / reverse switching of the rotation direction of the rotating drum is performed until the laundry attached to the inner surface of the rotating drum falls. Dryer.   The drum type laundry dryer according to any one of claims 1 to 7, wherein the maximum rotation speed of the arc rotation in the forward / reverse arc rotation drive mode is 50 rpm or more.   The drum type washing and drying machine according to any one of claims 1 to 8, wherein the initial arc rotation in the forward and reverse arc rotation drive mode is performed at 120 degrees or more and less than 180 degrees, and the subsequent arc rotation is performed near 180 degrees. .

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