JP2008194259A - Drum type washing-drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To mechanically reasonably achieve the high-quality finishing state of laundry with sufficient smoothing of the twining and twisting deeply engraved in laundry after a spin-drying step and with few wrinkles. <P>SOLUTION: Driving of a rotary drum 4, whose rotating axis is horizontal or inclined downward from the horizontal direction from the opened front side to the back side as the bottom, in the drying step is characterized by a forward/reverse arc rotation driving mode which is alternately executed with a forward/reverse continuous rotation driving mode or which is executed between the forward continuous rotation driving mode and the reverse continuous rotation driving mode. In the forward/reverse arc rotation driving mode, the sharp forward arc rotation and the sharp reverse arc rotation at the angle larger than 90 degrees and smaller than 200 degrees are alternately repeated. In the forward/reverse continuous rotation driving mode, the forward continuous rotation and the reverse continuous rotation at the rotating speed indicating the behavior of the laundry brought up by the rotation of the rotary drum 4 to fall from the height where its own weight is heavier are alternately repeated. <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. I can't lift it. 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 is in the direction against gravity, so The tendency to slide down rather than peel off in the direction away from the inner surface is 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. 11 (a) and 11 (b), the entanglement and twisting in the washing process and the rinsing process are strongly pressed against the inner surface of the rotating drum and stuck and strongly twisted. 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 that can sufficiently obtain a high finished state with little wrinkles with sufficient unraveling of entanglement and twisting of the laundry after the dehydration process. is there.

  In order to achieve the above object, a drum-type washing / drying machine according to the present invention is configured such that a rotary drum formed in a bottomed cylindrical shape has a horizontal or horizontal rotation axis direction from an open front side to a back side as a bottom. A forward / reverse arc rotation drive mode that is installed in the water tank so as to be inclined downward from the direction, and alternately repeats a sudden forward arc rotation and a sudden reverse arc rotation of 90 to less than 200 degrees of the rotating drum, and the rotation A drying step comprising a forward and reverse continuous rotation driving mode in which continuous rotation of the rotating drum at a rotational speed showing a behavior in which the laundry lifted by the rotation of the drum falls from a height where its own weight wins is repeated. The forward / reverse arc rotational drive mode is characterized in that it is executed alternately between the forward / reverse continuous rotational drive mode or between forward / reverse switching in the forward / reverse continuous rotational drive mode.

  According to such a feature, continuous rotation of the rotating drum at a rotation speed that shows a behavior in which the laundry that has been lifted by rotation of the rotating drum that has been conventionally performed falls from the height that the weight of the laundry is reduced. In addition to being able to execute a forward / reverse continuous rotation drive mode in which the rotation is alternately forward / reverse, the forward / reverse arc rotation drive mode can be used to perform a sudden forward arc rotation and a sudden reverse arc rotation of more than 90 degrees and less than 200 degrees of the rotating drum. The laundry is attached to the inner surface of the rotating drum and lifted up to more than 90 degrees and less than 180 degrees, and the rotation that occurs in the final stage of the lifting of the laundry in this sudden forward arc rotation and sudden reverse arc rotation The laundry can be forcibly peeled from the inner surface of the rotating drum due to its inertia and its own weight during the braking state for reversing, and can be dropped from the inner surface of the rotating drum to the side opposite to the lifting side by its own weight. Lifting position, since it is replaced on the left and right alternately in every pivot rotation drive the falling position switching forward and reverse, to enhanced the loosening effect of the laundry can exert mechanical forces evenly. Therefore, in the drying process, the forward / reverse arc rotation drive mode with a high drive load is executed alternately with the forward / reverse continuous rotation drive mode with a low drive load or between forward / reverse switching in the forward / reverse continuous rotation drive mode. , While reducing the mechanical load by executing the forward / reverse continuous rotation drive mode with a low drive load, the tangled, twisted, and wrinkled laundry in the forward / reverse continuous rotation drive mode is reduced, and forward / reverse arc rotation drive By reducing the imbalance of applying mechanical force to the laundry in the mode, the laundry being dried has different behaviors due to both modes, specifically, the tangled, twisted, Depending on the fluff finishing behavior, which removes the wrinkles and finishes plumply, depending on the forward / reverse continuous rotation drive mode, the laundry can be moved by moving it over a wide area and changing the position of the laundry. Drying accelerating behavior is given to reduce uniformly against drying unevenness in laundry hot air to be written.

  Also, the forward / reverse arc rotation drive mode performs the operation of alternately repeating the sudden forward arc rotation and the sudden reverse arc rotation. Therefore, the forward / reverse continuous rotation drive mode has a large driving load on the motor but a small driving load on the motor. By using together, it is possible to reduce the driving load on the motor. Furthermore, in the forward / reverse arc rotation drive mode, the rotating drum repeats forward arc rotation and reverse arc rotation within a predetermined range, so that there is a tendency that the bearing portion of the rotating shaft is slightly reduced and early rattling occurs. By using the forward / reverse continuous rotation drive mode in combination, the position of the bearing portion of the rotating shaft can be exchanged, so that it is possible to prevent the bearing portion of the rotating shaft from being partially reduced or causing early play.

  Further, the arc rotation of the rotating drum is characterized in that the laundry is driven at 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. Due to the sudden acceleration that causes the laundry to stick to the inner surface of the rotating drum up to about 90 degrees where the laundry cannot follow the rotation of the rotating drum due to the lifting from the lowest position of the rotating drum and easily falls due to its own weight. Non-slip to a predetermined lifting position, therefore, by giving inertia corresponding to the rotational speed of the rotating drum, it is reliably lifted, peeled off at the time of change to the braking state, and dropped to the side opposite to the lifting side of the laundry The left and right interchange of the laundry lifting position and the falling position can be achieved more reliably.

  Further, the forward / reverse switching of the rotation direction of the arc of the rotating drum is performed with a sudden braking operation at an arc rotation of the rotating drum of more than 90 degrees and less than 200 degrees. Even under conditions that satisfy the sudden acceleration that guarantees high speed, the direction of arc rotation is reversed rapidly in the forward and reverse directions, and at the final stage of arc rotation, the laundry is reliably peeled off due to high inertia and dead weight during sudden acceleration. Loss in applying mechanical force to an object can be suppressed.

  Here, the drum-type washing / drying machine of the present invention is configured such that the rotation axis direction of the rotating drum formed in the bottomed cylindrical shape is horizontal or inclined downward from the horizontal direction from the front side to the back side to the bottom side. The laundry is attached to the inner surface of the rotary drum by the centrifugal force generated by the rapid arc rotation of the rotary drum and lifted upward, and then the lifted laundry is subjected to its inertia and its own weight. The driving that peels off from the inner surface of the rotating drum and drops it by its own weight is executed repeatedly alternately forward and reverse, and the height at which the weight of the laundry lifted by the rotation of the rotating drum is higher than the weight of the laundry. And a forward / reverse continuous rotation drive mode in which continuous rotation of the rotating drum at a rotational speed showing a behavior of falling from the front and back is alternately repeated forward and backward, and the forward / reverse arc rotation drive mode is performed in a drying process. It can be regarded as being that it has to run at between forward and reverse switching of the normal and reverse continuous rotation drive mode and the alternating or normal and reverse continuous rotation drive mode, and other features.

  More preferably, the rotating drum formed in the bottomed cylindrical shape is placed in the water tank so that the rotation axis direction is inclined horizontally or downward from the horizontal direction from the opening front side toward the bottom side. 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, and then the laundry is rotated by its own weight by sudden braking of the rotating drum. A forward / reverse arc rotation drive mode in which the drive to peel from the inner surface of the drum and drop to the side opposite to the lifting side of the lower range of the rotating drum is forward and reverse alternately, and the laundry lifted by the rotation of the rotating drum has its own weight. Forward / reverse continuous rotation drive mode in which continuous rotation of the rotating drum at a rotational speed showing a behavior of falling from a height that prevails is repeated alternately forward and reverse, and in the drying process, Pivot rotation drive mode, the one that that it has to run at between forward and reverse switching of the normal and reverse continuous rotation drive mode and the alternating or normal and reverse continuous rotation drive mode, and other features.

  In these cases, as in the case of the one feature, it is preferable to repeat the rapid arc rotation of the rotating drum at less than 200 degrees, and it is best to perform it at more than 90 degrees.

  In addition, by setting a rotation pause time between the forward / reverse continuous rotation drive mode and the forward / reverse arc rotation drive mode, the behavior of the rotating drum and the laundry in the different drive modes before and after can be controlled. Once settled, the behavior of the next drive mode can be obtained easily and early without being affected by the behavior of the rotating drum or the laundry in the previous drive mode.

  In addition, by changing the execution rate of the forward / reverse continuous rotation drive mode and the forward / reverse arc rotation drive mode according to the elapsed time or the degree of drying, the weight of the laundry is reduced as the drying process progresses. Therefore, it is preferable to change the execution ratio between the forward / reverse arc rotation drive mode and the forward / reverse continuous rotation drive mode suitable for the weight.

  In addition, the execution ratio between the forward / reverse continuous rotation drive mode and the forward / reverse arc rotation drive mode is changed according to the amount of laundry, so that the laundry corresponding to the difference in the driving load depending on the amount of laundry Rotating drum can be driven optimally.

  According to the present invention, in the drying process, by performing the forward / reverse arc rotation drive mode, alternately lifting the laundry up to the upper left and right sides of the rotating drum by the sudden forward arc rotation and the sudden reverse arc rotation of the rotating drum. Each time the arc rotates by repeatedly peeling the laundry from the inner surface of the rotating drum reliably and instantaneously by its inertia and dead weight and dropping it to the opposite side of the rotating drum in the braking state at the final stage of lifting the laundry. The laundry lifting position and falling position can be interchanged alternately. 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 addition, when the forward / reverse arc rotation drive mode is alternated with the forward / reverse continuous rotation drive mode or between the forward / reverse switching of the forward / reverse continuous rotation drive mode, the laundry lifting position and dropping in the forward / reverse arc rotation drive mode are performed. Forward and reverse rotation while removing the tangled, twisted, and wrinkles of the laundry while removing the tangled, twisted, and wrinkles smoothly with a high unraveling action that involves alternating the positions left and right and thereby changing the left and right of the laundry, and mechanical action Depending on the drive mode, the laundry can be moved over a wide area and the position of the laundry can be changed to increase the breathability of the laundry individually, so that dry hot air can reach every corner. It can be dried without being dry, i.e., the laundry being dried is plumply finished depending on the forward / reverse arc rotation drive mode and the forward / reverse continuous rotation drive mode. Has a drying acceleration behavior that makes effective use of the high-temperature air that is sent by moving the laundry over a wide area. Since the reproduction can be achieved, the finished state can be greatly enhanced based on the high drying performance.

  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 10 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 to 20 ± 10 degrees, even if there is a height difference from children (excluding infants) to adults, even wheelchair users, It is possible to obtain a state in which the work in and out 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, because the dehydration process is executed 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 the inner surface is attached 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.

(Laundry process and rinsing process)
In order to solve the above problems, first, operations of the washing process and the rinsing process will be described. In this embodiment, in the washing process and the rinsing process, in order to greatly improve the occurrence of entanglement and twisting and to increase the function of mechanical force, it is difficult to generate wrinkles. Concerning drive control by the control board 9 for the bottomed cylindrical rotary drum 4 installed so that the direction is inclined downward from the horizontal direction, the positive rotation of the rotary drum 4 exceeding 90 degrees and less than 180 degrees, sudden reverse Continuous rotation of the rotating drum 4 at a rotation speed showing a forward / reverse arc rotation driving mode in which the arc rotation is alternately repeated and a behavior in which the laundry lifted by the rotation of the rotating drum 4 falls from the height of its own weight. Is provided with a forward / reverse continuous rotation drive mode in which forward and reverse are alternately repeated. Therefore, both of these drive modes can be executed as required.

  According to this, the laundry can be lifted up to more than 90 degrees and less than 180 degrees by arc rotation and rapid braking of the rotating drum 4 at a rapid speed exceeding 90 degrees and less than 180 degrees, and lifting the laundry It is possible to reliably achieve that the laundry is caused by the sudden braking at the final stage of the last stage, and the laundry is peeled off from the inner surface of the rotating drum 4 by its inertia and its own weight and dropped by its own weight, thus preventing the laundry from getting tangled. Therefore, the washing performance can be enhanced and the mechanical force can be exerted on the laundry. Further, the forward / reverse arc rotation drive mode is established by alternately repeating the forward / reverse rapid arc rotation in the forward direction and the reverse reverse arc rotation in the reverse direction. Since the lifting position and falling position of the object can be switched alternately left and right in each arc rotation drive, it is possible to further improve the solving action while preventing the laundry from getting tangled, and to increase the number of times the mechanical force is applied to the laundry As a result, the cleaning performance can be improved.

  In addition, the arc rotation drive mode alone reduces tangling, twisting, wrinkles, etc. of the laundry, but the vertical position of the laundry is difficult to change and washing unevenness is likely to occur, but the continuous rotation drive mode is also used. By doing so, it is possible to realize a change in the position of the laundry in the vertical direction, that is, to reduce tangling, twisting and wrinkle of the laundry in the continuous rotation drive mode and to the machine for the laundry in the arc rotation drive mode By reducing the imbalance of force application, the two types of behavior that are different in washing and rinsing laundry depending on both modes, specifically, tangling, twisting, and wrinkling of the laundry are reduced depending on the arc rotation drive mode. In addition, a firm hand-washing behavior while giving a uniform washing behavior that reduces the unevenness by moving the laundry largely and continuously depending on the continuous rotation drive mode. That.

  In addition, the arc rotation drive mode performs rapid rotation and braking, so the drive load on the motor is large, but the drive load on the motor is reduced by using the continuous rotation drive mode with a small drive load on the motor. can do.

  In particular, with respect to the arc rotation mode, particularly 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. The laundry 21 shown in FIG. 4 is stuck to the inner surface of the rotating drum 4 by the sudden forward arc rotation and the sudden reverse arc rotation of the rotating drum 4 exceeding 90 degrees and less than 180 degrees. 4 and 6 are lifted from the broken line position to the solid line position by exceeding 90 degrees and less than 180 degrees at the maximum. In addition, by performing this arc rotation drive in the order of circled symbols 2, 4, 6, 4, 6,... Shown in FIG. 4A, the circled symbol 3 shown in FIG. As shown in FIG. 5, a sudden braking state for reversal of rotation occurs at or near the solid line position that is the final point of lifting of the laundry 21, and the inertia of the rotating drum 4 and its own weight are applied to the laundry 21. The parabola as shown by the arrow from the broken line position to the solid line position is drawn by its own weight by peeling off from the inner surface, and it can be reliably dropped to the opposite side of the rotating drum 4 in the left-right direction. 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 the arc rotation of the rotating drum 4 alternately in the forward and reverse directions, and in the sudden braking state at or near the final time of the lifting of the laundry 21. The position where the laundry 21 is lifted for every sudden forward arc rotation and sudden reverse arc rotation by repeatedly removing 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 left and right sides of the rotating drum 4 due to its own weight. The fall position is switched alternately left and right, 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. Can be greatly relieved. In addition, the mechanical force can be exerted on the laundry 21 and the number of times the laundry 21 having a hitting action can be drastically increased, so that the function of each washing machine including the washing effect can be enhanced.

  Further, the arc rotation of the rotating drum 4 is driven by the rapid acceleration that the laundry 21 sticks to the inner surface of the rotating drum 4 until the laundry 21 reaches around 90 degrees from the lowest position of the rotating drum 4. The laundry 21 cannot be followed by the rotation of the rotating drum 4 due to the lifting of the rotating drum 4 from the lowest position, and the laundry 21 can be easily dropped due to its own weight. Due to the acceleration, the laundry 21 does not slip to a predetermined lifting position. Therefore, the laundry 21 is surely lifted by applying an inertia corresponding to the rotational speed of the rotary drum 4 and peeled off at the time of changing to the sudden braking state. It is possible to more reliably achieve the left and right interchanges of the laundry lifting position and the falling position due to falling to the opposite side of the lifting side.

  Further, the forward / reverse switching of the rotating direction of the arc of the rotating drum 4 is performed by sandwiching an abrupt braking operation when the arc rotation of the rotating drum 4 is more than 90 degrees and less than 180 degrees. Even under conditions that satisfy the sudden acceleration that guarantees sticking of the clothes, the arc rotation direction is reversed rapidly in the forward and reverse directions, and the laundry is reliably peeled off due to the inertia during sudden acceleration at the final stage of the arc rotation of the laundry, opposite to the lifting side. It is made to fall to the side of this and the loss of the mechanical force provision with respect to the laundry can be suppressed. Accordingly, it is possible to prevent entanglement and twisting while reducing the effect of each step of the washing machine in a shorter time and to reduce wrinkling.

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 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 time of the stop indicated by the circled symbol 1 in FIG. 5 to the rotation speed of about 50 rpm in the vicinity indicated by the circled symbol 2, the laundry 21 is reliably adhered. Further, the rotation angle of the rotating drum 4 necessary for this is a little less than 90 degrees, which satisfies the above-described conditions. In addition, in the above description, the lifting by sticking the laundry 21 is more than 90 degrees and 180 degrees of the rotating drum 4, but in this example, the rotation angle is around 125 degrees indicated by a circled symbol 2, The solid solid line described as “sticking level” near 125 degrees intersects with the solid line of rotation of the rotating drum 4, and thereafter, the solid line of rotation of the rotating drum 4 corresponds to the thick solid line described as “sticking level”. Since it is on the lower side, the maximum rotation speed is about 45 rpm, which is peeled off from the inner surface of the rotating drum 4 due to the rotation inertia and its own weight acting on the laundry 21 by braking that stops at the rotation angle of about 140 degrees reaching the circled sign 3 from the rotation angle of about 125 degrees. It can be seen that it can be peeled off even by a slight deceleration state.

  From such calculation and experience, the maximum rotation speed of the arc rotation in the forward / reverse arc rotation drive mode is 40 rpm or more, and the laundry 21 is not peeled off or braking is performed at the maximum rotation speed. Effectiveness by drive mode is obtained. Further, the laundry 21 can be peeled off in the forward / reverse arc rotation drive mode by, for example, braking performed in a range of a rotation angle of 125 degrees to 140 degrees as shown in the illustrated example. Specifically, the forced peeling force corresponding to the deceleration to less than 40 rpm is applied to the laundry 21 due to the rotational inertia of the laundry 21 that tries to continue the rotation at 40 rpm or more due to the deceleration state from the arc rotation performed at 40 rpm or more. Given and dropped.

  Further, the initial arc rotation indicated by the circled symbol 2 in FIG. 4A in the forward / reverse arc rotation drive mode is performed in the vicinity of 140 degrees as indicated by the broken line in FIG. 5, and FIG. The subsequent arc rotation shown in FIG. 5 is performed in the range of around 140 degrees to 30 degrees as shown by the solid line in FIG. 5, so that the initial arc rotation is shown by the solid line 1 in FIG. As indicated by the broken line in FIG. 2, the laundry 21 stationary in the lower range of the rotating drum 4 is lifted up to the upper part on the left and right initial arc rotation side by arc rotation near 120 degrees and braked between 120 degrees and 140 degrees. In addition, it is ensured that it falls on the opposite side of the rotating drum, specifically, on the diameter line of the rotating drum 4, and the subsequent arc rotation is set to 110 degrees near 140 degrees to 30 degrees, and either left or right of the rotating drum. Laundry close to the side, specifically dropped almost 30 degrees 1 is lifted to the upper part on the same side of the rotating drum 4, specifically to the position of about 120 degrees, and the behavior of dropping to the opposite side of the rotating drum 4 is almost symmetrical and is the maximum corresponding to the diameter of the rotating drum 4. The fall distance can be obtained reliably. As a result, the effect of unraveling and tapping 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 40 rpm, the laundry 21 is rotated by the rotating drum 4 in the rotational inertia acting on the laundry 21 by 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 rotary drum 4 is 90 degrees or less, the laundry 21 cannot be lifted, and when the rotation angle of the rotary drum 4 is 180 degrees or more, the laundry 21 is washed when the rotary 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 is allowed to act from the inner and outer circumferences, so that the drive power can be doubled without the problem of an increase in the size of the motor 5, and the forward / reverse arc rotation drive mode with sudden reversal can be executed without difficulty by the small motor 5.

  As a result, a technology capable of permanently executing the forward / reverse arc rotation drive mode with rapid reversal with a rotational speed characteristic with a good left / right balance as shown in FIG. 5 is realized, and the forward / reverse rotation of the laundry 21 is realized. In any case, after the laundry 21 is dropped at the same position of the rotating drum 4 indicated by the circled symbols 3 and 5 and reaches the sticking area of the laundry 21 at approximately the same rotation angle of 90 degrees from the time of the drop, The positions of the circled signs 4 and 6 are reached at the same rotation angle, and the laundry 21 is peeled off from the rotary drum 4 by sudden braking. The required time from the peeling position indicated by the circled symbol 4 to the peeling position indicated by the circled symbol 6 is about 0.8 seconds. From the peeling position indicated by the circled symbol 6 to the peeling position indicated by the circled symbol 4 The required time is about 0.8 seconds, and both are equal.

  Further, in at least one of the washing process and the rinsing process, the forward / reverse arc rotation drive mode is executed alternately between the forward / reverse continuous rotation drive mode or between the forward / reverse switching in the forward / reverse continuous rotation drive mode, In the washing process and the rinsing process, the laundry contains water, and the driving load increases. On the other hand, the forward / reverse arc rotation driving mode with a high driving load is combined with the forward / reverse continuous rotation driving mode with a low driving load. The mechanical load imbalance on the laundry can be corrected according to the execution ratio of the forward / reverse arc rotation drive mode from the entanglement, twist, and wrinkle of the laundry 21 in the forward / reverse continuous rotation drive mode. In addition, depending on the two modes, two different behaviors for the laundry 21 that is being washed and rinsed, specifically, a firm hand-washing behavior depending on the forward / reverse arc rotation drive mode, and depending on the forward / reverse continuous rotation drive mode, Uniform washing behavior can be given in which the laundry is moved continuously and washed evenly.

  Further, the stop or inversion for forward / reverse switching of the rotation direction of the rotating drum 4 is performed until the laundry 21 attached to the inner surface of the rotating drum 4 falls. Thereby, since the falling position of the laundry 21 has moved from the lifting side in the arc rotation direction or the continuous rotation direction to the opposite side, the falling position can be secured and lifted by the reverse arc rotation or continuous rotation can be performed. It is possible to more reliably achieve the left and right alternate switching in each arc rotation drive or continuous rotation drive of the lifting position and the falling position of the 21 to further enhance the unwinding action of the laundry 21, and to apply the mechanical force more evenly.

(Drying process)
Next, the operation of the drying process will be described. In the present embodiment, in the drying process, drive control by the control board 9 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 to the bottom side. The forward and reverse arc rotation drive mode in which the rotation of the rotating drum 4 exceeds 90 degrees and less than 200 degrees alternately in the forward and reverse arc rotation and the laundry lifted by the rotation of the rotating drum 4 wins its own weight. And a forward / reverse continuous rotation drive mode in which continuous rotation of the rotating drum 4 at a rotational speed showing a behavior of falling from a height is repeated alternately forward and reverse, and the forward / reverse arc rotation drive mode is the forward / reverse continuous rotation in the drying process. It is executed between the drive mode and the forward / reverse switching in the alternating or forward / reverse continuous rotation drive mode.

  Regarding 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. 6 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. 6 is illustrated in circled reference numerals 2, 4, and 6 in FIG. 6A by 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 code 1 in FIG. 6 (a), at the start, as shown by the circled code 2 in FIG. 6 (a), the laundry rapidly accelerates to around 85 degrees in the forward rotation direction to 50 rpm or more. 21 is attached to the inner surface of the rotating drum 4 and lifted. After that, as indicated by a circled symbol 3 in FIG. 6A, sudden braking is applied and the vehicle decelerates rapidly 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. 6A, 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. 6A, sudden braking is applied to suddenly decelerate 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.

  Furthermore, as indicated by a circled symbol 6 in FIG. 6A, the laundry 21 is rapidly accelerated up 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 indicated by a circled symbol 3 in FIG. 6A, sudden braking is applied and the vehicle decelerates rapidly 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.

  In addition, by performing this arc rotation drive in the order of circled symbols 2, 4, 6, 4, 6,... Shown in FIG. 6 (a), the circled symbol 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 to the 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. By lifting the laundry 21 from the inner surface of the rotating drum 4 reliably and instantaneously by the forced peeling force and its own weight due to its inertia and dropping it to the left and right sides of the rotating drum 4, the lifting position of the laundry 21 for each arc rotation, By changing the fall position alternately left and right, the unraveling 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 sticking can be greatly eased. 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. 11 (a) and 11 (b), the lifting position and the dropping position of the laundry 21 are alternately switched to the 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 at a rapid acceleration at which the laundry 21 sticks to the inner surface of the rotating drum 4 until the laundry 21 reaches about 90 degrees from the lowest position of the rotating drum 4. As a result, the laundry 21 sticks to the inner surface of the rotary drum 4 by about 90 degrees where the laundry 21 cannot follow the rotation of the rotary drum 4 due to the lifting from the lowest position of the rotary drum 4 and easily falls due to its own weight. Due to the sudden acceleration, the laundry 21 does not slide to a predetermined lifting position. Therefore, the laundry 21 is reliably lifted by applying an inertia corresponding to the rotational speed of the rotating drum 4, and peeled off at the time of change to the braking state. It is possible to more reliably achieve the left and right interchange of the lifting position and the falling position of the laundry 21 due to the fall to the side opposite to the lifting side.

  Furthermore, since the forward / reverse arc rotation drive mode has a high drive load, it is executed alternately between the forward / reverse continuous rotation drive mode with a low drive load in the drying process, or between forward / reverse switching in the forward / reverse continuous rotation drive mode. While reducing the driving load by the amount of execution of the forward / reverse continuous rotation drive mode, the laundry 21 can be made to exhibit the drying characteristics of the forward / reverse arc rotation drive mode, and in particular, the laundry 21 during the drying process can Depending on the reverse arc rotation drive mode, the plumbing finish behavior that removes tangling, twisting, and wrinkles of the laundry, and depending on the forward / reverse continuous rotation drive mode, the laundry can be moved widely to change the position of the laundry. Applying high-temperature air to the laundry evenly to give drying acceleration behavior that effectively utilizes drying to reduce unevenness in drying The accompanying spread fibers and regeneration by fraying of the individual laundry 21 is enhanced greatly finished state of high drying group laundry performance 21 so attained.

  In view of the behavior of the laundry 21 as described above, the forward / reverse arc rotation drive mode of the present embodiment also causes the laundry 21 to move to the inner surface of the rotary drum 4 by the centrifugal force due to the sudden arc rotation of the rotary drum 4. After being lifted up and pasted to the top, 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 dropped by its own weight, repeatedly and alternately. it can.

  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 in which the laundry 21 is peeled off from the inner surface of the rotating drum 4 by its own weight and dropped to the side opposite to the lifting side of the lower range of the rotating drum 4 is repeated alternately and forwardly. 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, the arc rotation of the rotating drum 4 is performed by driving with the steep acceleration to stick, and the laundry 21 is pasted on the inner surface of the rotating drum 4 by about 90 degrees where it becomes easy to fall due to its own weight. Due to the sudden acceleration applied, the laundry 21 does not slip to the arc rotation position, and therefore, the inertia corresponding to the rotation speed of the rotary drum 4 is given and lifted up to the arc rotation end position, and at the time of change to the braking state. Peeling can be achieved more reliably. Accordingly, the left and right interchanges of the lifting position and the falling position of the laundry 21 by each arc rotation in the forward and reverse arc rotation drive mode are achieved with a larger stroke, and the unwinding action and the tapping action at the time of falling are achieved. Furthermore, even when the amount of the laundry 21 is high, sufficient unwinding action and tapping action can be obtained.

  Further, the forward / reverse switching of the rotating direction of the arc of the rotating drum 4 is performed with an abrupt braking operation when the arc rotation of the rotating drum 4 exceeds 90 degrees and less than 200 degrees, thereby ensuring that the laundry 21 is stuck. Even under conditions that satisfy the sudden acceleration, the arc rotation direction is reversed rapidly in the forward and reverse directions, and the laundry 21 is reliably peeled off by the high inertia during the rapid acceleration at the final stage of the arc rotation. It is possible to suppress the loss of mechanical force applied to the. 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.

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 in which the force in the center direction and the centrifugal force are balanced,
mrω ² = mg cos θ
As shown in FIG. 7, the result is as shown by the thick solid line described as “sticking level” shown in FIG. The circled code shown in FIG. 7 corresponds to the circled code shown in FIG. From the stop time indicated by the circled symbol 1 in FIG. 7 to the rotation speed of about 60 rpm in the vicinity indicated by the circled symbol 2, the attachment of the laundry 21 is reliably achieved. 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 more than 90 degrees and up to 200 degrees of the rotating drum 4, but in this example, the rotation angle is around 165 degrees indicated by a circled symbol 2, It can be peeled off at a speed of around 50 rpm where it is peeled off from the inner surface of the rotating drum 4 due to inertia and its own weight acting on the laundry 21 due to braking that stops at a rotation angle of 165 degrees reaching the circled sign 3 from around a rotation angle of 85 degrees and even a slight deceleration state. I understand.

  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, Effectiveness by forward / reverse arc rotation drive 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 gravity corresponding to the deceleration to less than 50 rpm are applied to the laundry 21 due to the inertia of the laundry 21 attempting to continue the rotation at 50 rpm or higher due to the deceleration state from the arc rotation performed at 50 rpm or higher. To be dropped.

  Further, in the forward / reverse arc rotation drive mode, the initial arc rotation indicated by a circled symbol 2 in FIG. 6A is performed in the vicinity of 165 degrees as indicated by a broken line in FIG. 7, and FIG. The subsequent arc rotation shown in FIG. 7 is performed in the range of about 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 rotating drum 4 is rotated by 90 ° to less than 200 °, more specifically, the left and right initial arc rotation sides by arc rotation near 160 °. To the upper side (near 135 degrees) and ensure that it falls 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 near 180 degrees (near 165 degrees) To the left and right sides of the rotating drum 4 Specifically, while the laundry 21 that has fallen by about 30 degrees is sandwiched between rotations of up to 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 is allowed to act from the inner and outer circumferences, so that the drive power can be doubled without the problem of an increase in the size of the motor 5, and the forward / reverse arc rotation drive mode with sudden reversal can be executed without difficulty by the small motor 5.

  This realizes a technology that can permanently execute the forward / reverse arc rotation drive mode with sudden reversal between the sudden forward arc rotation and the sudden reverse arc rotation with the right / left balanced rotation speed characteristics as shown in FIG. 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.

  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. By driving the motor 5 in accordance with the second drum driving instruction not exceeding, even if there is a difference in the driving load from time to time, the rotation of the rotating drum 4 can be obtained according to the setting of the lifting and peeling behavior with respect to the laundry 21 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.

  Moreover, since the weight of the laundry 21 decreases with the progress of the drying process by changing the execution ratio between the forward / reverse continuous rotational drive mode and the forward / reverse arc rotational drive mode according to the elapsed time or the drying condition, It is preferable to change the execution ratio between the forward / reverse arc rotation drive mode and the forward / reverse continuous rotation drive mode suitable for the weight.

  Further, by changing the execution ratio between the forward / reverse continuous rotation drive mode and the forward / reverse arc rotation drive mode according to the amount of the laundry 21, the laundry 21 is optimal for the laundry 21 corresponding to the difference in the driving load depending on the amount of the laundry 21. The rotary drum 4 can be driven, and the amount of laundry 21 and the driving load may be determined by various known detection methods.

  In addition, in the washing process and the rinsing process, since the laundry 21 contains a lot of water, the weight of the laundry 21 itself becomes heavy. Therefore, the maximum rotation speed of the arc rotation is desirably 40 rpm or more, and if it is 40 rpm or more, A maximum of 90 degrees is lifted to less than 180 degrees, and a braking state is generated by sudden braking at the final stage of lifting the laundry 21, and the laundry 21 is peeled off from the inner surface of the rotating drum 4 due to its inertia. However, in the drying process, since the laundry 21 contains less water, the weight of the laundry 21 itself becomes lighter than that in the washing process and the rinsing process. The braking state is reduced due to sudden braking at the final stage of lifting the laundry 21 when the maximum is over 90 degrees and below 180 degrees. The 濯物 21 to drop by its own weight was peeled from the rotating drum 4 inside surface by its inertia, the maximum rotational speed of the arc rotation 50rpm or more.

  On the other hand, as described above, the forward / reverse arc rotation drive mode performs the operation of alternately repeating the sudden forward arc rotation and the sudden reverse arc rotation, so that the rotation shown in FIG. There is also a problem that the bearing 10 of the shaft 4a is partially reduced and early play occurs. However, while the driving load in the forward / reverse arc rotation drive mode is large, the forward / reverse continuous rotation drive mode has a behavior in which the laundry 21 lifted by the rotation of the rotary drum 4 falls from the height at which its own weight is superior. Since the rotation of the rotary drum 4 is continuous at the indicated rotation speed and the driving load is small, the driving load on the motor 5 can be reduced by using the forward / reverse arc rotation driving mode and the forward / reverse continuous rotation driving mode together. In addition, since the position of the bearing portion 10 of the rotating shaft 4a can be exchanged, it is possible to prevent the bearing portion 10 of the rotating shaft 4a from being partially reduced or causing an early play.

  In the drying process, the forward / reverse continuous rotation drive mode is conventionally repeated at about 40 rpm in about forward / reverse intervals of 1 minute. However, the forward / reverse continuous rotation drive mode is executed in combination with the forward / reverse arc rotation drive mode without changing this or in various ways. Specifically, the forward / reverse arc rotation drive mode D as shown in FIG. 8 is an α pattern executed alternately with the forward / reverse continuous rotation drive mode T, or forward / reverse continuous rotation drive as shown in FIG. It can be executed between forward / reverse switching in mode T, and the number of repetitions of forward / reverse arc rotation in forward / reverse arc rotation drive mode D can be implemented as a β, γ pattern, etc. with different magnitudes or starting directions. Accordingly, the laundry 21 in the forward / reverse continuous rotation drive mode T is reduced while the mechanical load is reduced by using the forward / reverse continuous rotation drive mode T with a lower drive load in combination with the forward / reverse arc rotation drive mode D with a higher drive load. The imbalance of mechanical force application to the laundry 21 in the forward / reverse arc rotation drive mode D is corrected according to the execution ratio of the forward / reverse continuous rotation drive mode T and the forward / reverse arc rotation drive mode D. it can.

  For example, since the laundry 21 is in a damp state at the initial stage of the drying process, if the forward / reverse arc rotation drive mode D is executed in that state, it is easy to remove entanglement, twisting, and wrinkles from the laundry 21. By increasing the arc rotation drive mode D, more entanglement, twisting, and wrinkles can be removed, and in the latter stage of the drying process, the forward / reverse continuous rotation drive mode T is increased, Thus, unevenness in drying can be reduced by frequently changing the position of the laundry 21. In addition, by setting a rotation pause time between the forward / reverse continuous rotation drive mode T and the forward / reverse arc rotation drive mode D, the rotary drum 4 and the laundry 21 in the different drive modes T and D before and after are set. The behavior is settled once, and the behavior of the next drive mode can be obtained reasonably and quickly without being affected by the behavior of the rotary drum 4 or the laundry 21 in the previous drive mode, and the drive load is reduced. A pause time of about 1 second is sufficient.

  Also, in the washing process, the α pattern, the β pattern, and the γ pattern are sequentially executed to move to the drying process, but the rinse process is not included or the same time distribution, for example, 15 minutes is executed. However, by sequentially increasing the number of forward and reverse arc rotation repetitions in the forward and reverse arc rotation drive mode D, the number of forward and reverse arc rotation repetitions is increased in three stages from the start to the end of the washing process. With the increase in the penetration of the surface-active action by the detergent and the detergent, the action of tapping or rinsing by dropping of the laundry 21 and squeeze stretching are enhanced, and more effective and short-time washing or rinsing is performed. As described above, the drying process is efficiently performed and the laundry 21 with less wrinkles can be obtained.

  However, the drying process and the washing process are not limited to the combination pattern of both T and D modes. In addition to or in addition to the combination pattern of both the T and D modes, It is preferable to increase the number of repetitions of forward / reverse arc rotation drive in the forward / reverse arc rotation drive mode D, such as for a certain period of time to increase the wettability of the laundry 21 at the start of washing, It is preferable to increase the execution ratio of the forward / reverse continuous rotation drive mode T so as to expose the laundry 21 to the washing water stream in order to remove the sheet solid component and the like. Here, the combination pattern of the forward / reverse continuous rotation drive mode T and the forward / reverse arc rotation drive mode D includes the type of laundry 21 and the purpose of washing, including the execution time at each execution timing or the difference in rotational speed. It is preferable that the user can perform washing according to the difference between them, and various patterns are automatically executed in the process according to the selection input from the operation panel 14 according to the input setting from the operation panel 14. Can do.

  In the washing process, in particular, the laundry 21 becomes heavy and contains water, and the driving load in the forward / reverse arc rotation drive mode D is particularly high. Therefore, in the washing process, the forward / reverse continuous rotation drive mode T and forward / reverse arc rotation drive are performed. By changing the execution ratio with the mode D, it is preferable to change the execution ratio with the forward / reverse continuous rotation drive mode T according to the purpose, degree, and load of washing. For example, while the load of the motor 5 is small in terms of the washing function, the execution rate of the forward / reverse continuous rotation drive mode 1 is good with respect to the forward / reverse arc rotation drive mode 3, while the amount of the laundry 21 is large. When the load is high, the execution ratio of the forward / reverse continuous rotation drive mode 3 to the forward / reverse arc rotation drive mode 1 is good. In addition, by performing in other processes as well as the washing process, by reducing and increasing the execution ratio of the forward and reverse arc rotation drive mode to the forward and reverse continuous rotation drive mode according to the amount of laundry, The washing characteristics by forward / reverse arc rotation drive mode can be utilized to the maximum without excessive or insufficient drive load.

  In addition, when the forward / reverse arc rotation drive mode is executed between the dehydration process and the drying process, the laundry 21 attached to the inner surface of the rotating drum 4 in the dehydration process is peeled off and entangled in the drying process support. In addition, since the twist can be already eliminated, the drying efficiency can be further increased, and it is also effective for removing wrinkles.

  It is practically used in a drum-type washing and drying machine in which a rotating drum is installed in a horizontal direction or at an angle, and it is possible to eliminate entanglements and twists that are strongly attached after the dehydration process in the drying process and to improve the drying efficiency without difficulty. Can also be taken.

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. (1) It is process drawing of the forward / reverse arc rotation drive mode in the washing process and the rinsing process in the drum type washing / drying machine of FIG. 1, (2) It is explanatory drawing which shows right-and-left interchange of the lifting position and falling position of the laundry. . FIG. 2 is a rotation characteristic diagram with respect to sticking and peeling of laundry on the inner surface of a rotating drum for ideally realizing a forward and reverse arc rotation driving mode in a washing process and a rinsing process in the drum type washing and drying machine of FIG. 1. (1) It is process drawing of the forward / reverse arc rotation drive mode in the drying process in the drum type washing-drying machine of FIG. 1, (2) It is 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 sticking and peeling of laundry on the inner surface of a rotating drum for ideally realizing a forward / reverse arc rotation driving mode in a drying process in the drum type laundry dryer of FIG. 1. It is a graph which shows one example of the combination pattern of the normal / reverse continuous rotation drive mode and the normal / reverse arc rotation drive mode in the drum type washing / drying machine of FIG. It is a graph which shows another example of the combination pattern of the normal / reverse continuous rotation drive mode and the normal / reverse arc rotation drive mode in the drum type washing / drying machine of FIG. FIG. 8 is a copy diagram showing two state examples of laundry when the forward / reverse arc rotation drive mode and the forward / reverse continuous rotation drive mode in the embodiment shown in FIGS. 5 and 7 are used in combination in the washing step and 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 rotation and a sudden reverse arc rotation of more than 90 degrees and less than 200 degrees of the rotating drum, and a laundry that is lifted by the rotation of the rotating drum is higher in its own weight. A forward / reverse continuous rotation drive mode in which continuous rotation of the rotating drum at a rotational speed showing a falling behavior is repeated forward and backward alternately, and the forward / reverse arc rotation drive mode is the forward / reverse continuous rotation in the drying process. A drum-type washing and drying machine, wherein the drum-type washing and drying machine is configured to execute between the drive mode and the forward / reverse switching in the forward / reverse continuous rotation drive mode.   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,
After the laundry is attached to the inner surface of the rotating drum by the centrifugal force generated by the sudden arc rotation of the rotating drum and lifted upward, the lifted laundry is peeled off from the inner surface of the rotating drum by its inertia and dropped by its own weight. Continuous rotation of the rotating drum at a rotational speed showing a forward / reverse arc rotation driving mode in which driving is repeated alternately forward and reverse, and a behavior in which the laundry lifted by the rotation of the rotating drum falls from the height of its own weight. The forward / reverse arc rotation drive mode in the drying process is alternated with the forward / reverse continuous rotation drive mode or between forward / reverse switching in the forward / reverse continuous rotation drive mode. A drum-type washing and drying machine characterized in that it is implemented in 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 suddenly braked from the inner surface of the rotating drum by its own weight. The forward / reverse arc rotation drive mode in which the drive to peel off and drop to the side opposite to the lifting side of the lower range of the rotating drum is forward and reverse alternately, and the laundry that is lifted by the rotation of the rotating drum has a higher weight than its own weight. A forward / reverse continuous rotation drive mode in which continuous rotation of the rotating drum at a rotational speed indicating a falling behavior is repeated forward and backward alternately, and the forward / reverse arc rotation drive mode is a forward / reverse continuous rotation drive in a drying process. The drum type washing and drying machine, which is executed between the mode and alternate or forward / reverse switching in the forward / reverse continuous rotation drive mode.   The drum-type washing / drying machine according to claim 4 or 5, wherein the sudden arc rotation of the rotating drum is repeated at a time exceeding 90 degrees and less than 200 degrees.   The drum type washing and drying machine according to any one of claims 1 to 6, wherein a rotation pause time is set between the forward / reverse continuous rotational drive mode and the forward / reverse arc rotational drive mode.   The drum type washing / drying machine according to any one of claims 1 to 7, wherein an execution ratio between the forward / reverse continuous rotation drive mode and the forward / reverse arc rotation drive mode is changed according to an elapsed time or a drying condition.   The drum type laundry dryer according to any one of claims 1 to 8, wherein an execution ratio between the forward / reverse continuous rotation drive mode and the forward / reverse arc rotation drive mode is changed according to the amount of laundry.

Images