JP2008125853A - Drum type washing and drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum type washing and drying machine for performing dry detection appropriately in a drying process and performing control in accordance with the amount of load. <P>SOLUTION: When an imbalance occurs during warm-air dehydration in the drying process, the revolution continues so as to correct the imbalance until the warm-air dehydration starts at the next step; by entering the warm-air dehydration at the next step when the time comes, a series of warm-air dehydration finishes at a scheduled time; and in the case of reference value measurement so as to detect the dryness, control is performed so that the same operation as when the imbalance does not occur. In accordance with the amount of load, appropriate drying is performed by changing the number of drum revolution, the number of changing the number of revolution, and the maximum number of revolution. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drum-type washing and drying machine, and more particularly to a method for controlling a drying process.

  In the drum type washing and drying machine, a drum type washing and drying machine that rotates the rotating drum forward and backward during drying to reduce the number of rotations is described in Japanese Patent Laid-Open No. 2003-251098 (Patent Document 1).

JP 2003-251098 A

  A large amount of moisture that causes a problem in the timing to measure the reference value for dryness detection if the measures are not taken properly when the warm air dehydration is started during the drying process of the drum type washing and drying machine There is a possibility that problems such as entering into low-speed rotation and not drying will appear. In addition, in the case where the movement corresponding to the load amount is not performed at the time of changing clothes, problems such as an extended drying time, poor drying, and poor finishing occur.

  An object of the present invention is to provide an easy-to-use drum-type washing and drying machine by appropriately handling when an imbalance occurs and performing control to perform movement according to the load.

  In order to achieve the above object, the present invention performs rotation for correcting imbalance without slowing down or repeating retry even when imbalance occurs in hot air dehydration in the drying process. Enter the process as soon as it is time for the next stage of hot air dewatering, and end the series of hot air dewatering on time. Further, when the drum rotates left and right, the maximum number of rotations, the number of rotation changes, and each rotation number It has control which performs suitable drying by changing required time etc. according to load amount.

  According to the present invention, it is possible to appropriately deal with a problem that is concerned when performing high-speed rotation at the time of hot air dehydration, and by performing an operation according to the load amount, it is possible to obtain an appropriate drying time, drying condition, and finish. Can be obtained.

  Hereinafter, a drum type washing and drying machine according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is an external perspective view of the drum type washing and drying machine of the present embodiment, and FIG. 2 is a longitudinal sectional view of the drum type washing and drying machine.

  The drum type laundry dryer of this embodiment includes a water supply process, a washing process, a draining process, a dewatering process, a rinsing process, and a drying process in the operation process.

  As shown in FIG. 1, in the drum type washing and drying machine of the present embodiment, an outer frame 2 configured by combining a steel plate and a resin molded product is placed on a base 1.

  As shown in FIG. 2, in order to put in and out the laundry 30, the door 3 provided on the front side of the outer frame 2 has a double structure, the outside is constituted by a resin molded product 39 which is a design part, and the inside is heat resistant. A glass door 40 is used. Air is blown to the heater 43 through the filter chamber for drying, and the heated hot air is blown out from the outlet 44 provided in the upper portion of the outer tub 20 and is blown into the rotary drum 29. The warm air hits the heat-resistant glass door 40. Therefore, as shown in FIG. 3, the door glass cut portion 40a is tilted toward the hot air blowing port 44 so that the hot air efficiently passes through the surface of the door glass cut portion 40a and then hits the laundry 30, and then the laundry 30 Between the rear portion of the rotary drum 29 and the ventilation port 46 of the dehumidifying device 45 provided outside the bottom of the outer tub 20, and is dehumidified by the dehumidifying device 45 and repeatedly circulated by the blower fan 42. 30 is dried.

  On the inner periphery of the rotating drum 29, a plurality of lifters 33 for scraping the laundry 30 stored in the rotating drum 29 in the washing and drying process extend in the axial direction in the circumferential direction. Are provided in a discrete arrangement. Depending on the position of the hot air outlet 44, when the hot air outlet 44 is on the right side when viewed from the front of the main body, the rotating drum 29 is rotated left, while when the hot air outlet 44 is on the left, the rotating drum 29, since the warm air is efficiently applied to the laundry 30 when the right side is rotated, the lifter 29 is lifted so that the clothes on the back side slide out toward the front when the rotary drum 29 rotates in a direction effective for drying. 33 is inclined with respect to the axial direction. (See FIG. 4) FIG. 3 and FIG. 4 are the shapes when the hot air outlet 44 is at the upper right side when viewed from the front.

  Next, rotation control in the drying process at the time of washing and drying will be described with reference to FIG.

  After going through the washing process and entering the drying process, first, hot air dehydration 53 is performed as initial drying 50. Thereafter, replacement 54 is performed, and the rotary drum 29 is rotated left and right, and the laundry 30 stuck to the inner periphery is peeled and loosened. Next, the process proceeds to sensor drying 51, and replacement 55 is performed. At the stage where the drying of the laundry 30 is detected by the sensor, the finishing 52 is entered, and the temperature of the laundry 30 in the rotary drum 29 is lowered, and the process ends.

  FIG. 6A shows a state where the hot air dehydration 53 is normally performed. The vertical axis represents the number of rotations, and the positive rotation refers to the rotation direction in which the hot air is efficiently applied among the left and right rotations. The horizontal axis represents the elapsed time. The hot air dehydration 53 is set to be performed a plurality of times. The second hot air dewatering 53b has a higher rotational speed than the first hot air dewatering 53a, and is set to be higher or equivalent to the previous rotational speed as the number of times increases. Yes. FIG. 6B shows a case where an imbalance occurs when the hot air dewatering 53b is started. Only when the hot air dehydration 53b is scheduled to be performed, the rotating drum 29 is rotated left and right (rotation 57 for unbalance correction) in order to correct the unbalance, and when the time of the hot air dewatering 53c is reached, as originally planned. Start hot air dehydration 53c. FIG. 6C shows the case where all the hot air dewatering 53 is set to the low speed 58 after the occurrence of the unbalance, and FIG. 6D shows the case where the retry 59 after the unbalance is repeated. Although the reference value for detecting the dry state is measured at the final stage of the initial drying 50 in FIG. 5, in the case of FIG. 6C, the laundry 30 contains a lot of water due to the low-speed rotation. 6 is a reference value measurement in the middle of hot air dehydration 53d, and therefore it is difficult to obtain an appropriate measurement result. Therefore, a series of hot air dewatering 53 is completed at the same time as in FIG. 6A by the movement as shown in FIG. 6D, and the dry detection reference value measurement time 60 is entered at the same timing. Measurement results were obtained.

Next, the replacement 55 in FIG. 5 will be described with reference to FIG. In the movement of rotating the rotary drum 29 left and right, the maximum rotation speed, the number of rotation speed changing steps, and the time required for each rotation are changed according to the load. Fig. 7 (a) is a small amount (up to 30% of the dry capacity), Fig. 7 (b) is a medium amount (around 60% of the dry capacity), and Fig. 7 (c) is a large amount (more than 80% of the dry capacity). Is shown. In the case of a small amount and a medium amount, it is easy to replace the laundry 30 in the rotary drum 29, and in consideration of the finish, the clothing does not twist, so the time required for normal rotation and reverse rotation is made equal. . On the other hand, in the case of a large amount, it is difficult to replace the laundry 30 in the rotary drum 29, which causes problems such as uneven drying and prolonged time required for drying. Therefore, as shown in FIG. The required time of the rotation 60f is not made equal, and the position of the laundry 30 is changed little by little using the difference in the required time and the inclination of the lifter 33 described in FIG. As described above, the time of the normal rotation in which the warm air efficiently hits the laundry 30 is set longer than the reverse rotation, and if the length is extremely different, the effect is not improved and a lot of twisting occurs. For this reason, an appropriate time difference was set.

  Further details of the replacement 55 will be described with reference to FIG. This is a diagram in which the diagrams of changes in the rotational speeds of forward rotation and reverse rotation shown in FIGS. 7A, 7B, and 7C are arranged in a horizontal row.

  As shown in the figure, a plurality of rotational speeds are provided for any load amount. This is because the centrifugal force applied to the laundry 30 is changed by changing the rotational speed of the rotary drum 29, the position of the laundry 30 in the drum is changed during the rotation, and the effect of changing the path of the hot air is aimed. Is. At this time, as shown in FIG. 8 (a), a medium amount rather than a small amount and a large number of steps larger than the medium amount were set to prevent drying unevenness and shorten the drying time. Further, since the centrifugal force applied to the laundry 30 varies depending on the amount of laundry even at the same rotational speed, the rotational speed at the final stage is set higher as the load amount is larger as shown in FIG.

  As described in FIGS. 7 (a) and 7 (b), the time required for forward rotation and reverse rotation is equal in the case of a small / medium load of less than 80%. The number of set stages, the number of rotations of each stage, and the time required for rotation are also equal. This prevented twisting of the laundry 30 and improved the finish.

  On the other hand, as described with reference to FIG. 7C, since it is difficult to change clothes in the case of a heavy load of 80% or more, the time required for normal rotation is longer than that for reverse rotation. The content is that the number of set stages and the number of rotations of each stage are equal, and only the time required for rotation is extended. As another method, there is a method of changing not only the required rotation time but also the set number of steps and the number of rotations.

  The load amount is set to 8 ranks, rank 1 is 0 to 0.5 kg, rank 2 is 0.5 to 1 kg, rank 3 is 1 to 2 kg, rank 4 is 2 to 3 kg, rank 5 is 3 to 4 kg, rank 6 Is 4-5 kg, rank 7 is 5-6 kg, rank 8 is 6-7 kg.

  The very small amount is ranks 1-2, the small amount is rank 3, the medium amount is ranks 4-6, and the large amount is ranks 7-8.

  Hot air dehydration is usually performed in 4 stages.

  Hot air dewatering 1 is performed at 400 rpm for 1 minute 10 seconds, hot air dewatering 2 is performed at 700 rpm for 2 minutes 40 seconds, and hot air dewatering 3 is performed at 950 rpm for 2 minutes 50 seconds.

  When the amount of hot air dehydration 4 is very small (ranks 1 and 2), the laundry is stuck inside the rotating drum and is not easily wrinkled.

  Otherwise (rank 3 or higher), hot air dehydration 4 is performed, rank 3 is 950 rpm, 3 minutes 18 seconds, rank 4 and rank 5 are 950 rpm, 10 minutes 18 seconds, rank 6 is 950 rpm, 15 minutes, rank 7 and rank 8 is carried out at 1200 rpm for 20 minutes.

The replacement is performed in two stages from rank 1 to 3 at 47 rpm for 7 seconds and 55 rpm for 7 seconds. For ranks 4 to 6, forward and reverse rotation is performed in three stages: 45 rpm for 7 seconds, 55 rpm for 7 seconds, and 60 rpm for 5 seconds. Ranks 7-8 are 35rpm 7 seconds, 45rpm 30 seconds, 60rpm
19 seconds, 85 rpm 12 seconds, reverse rotation 35 rpm 5 seconds, 45 rpm 23 seconds, 60 rpm 13 seconds,
85 rpm 12 seconds, the forward and reverse rotation time is changed. The reason is that warm air is efficiently applied to clothing during normal rotation due to the position of the warm air outlet.

1 is an external perspective view of a drum type washing and drying machine according to an embodiment of the present invention. It is a longitudinal cross-sectional view of the drum type washing-drying machine of FIG. It is a front view of a drum type washing and drying machine. It is a figure of a lifter. It is explanatory drawing of a drying process. It is explanatory drawing of warm air dehydration control. It is explanatory drawing of the rotational speed according to load amount. It is explanatory drawing of the rotational speed according to load amount.

Explanation of symbols

2 Outer frame 3 Door 29 Rotating drum 30 Laundry 36 Drum drive motor (drive motor)
42 Blower fan (hot air supply means)
43 Heater (hot air supply means)
44 Outlet (hot air supply means)
45 Dehumidifier (hot air supply means)
46 Ventilation opening (warm air supply means)

Claims (5)

A rotating drum for storing laundry provided inside the outer tub, hot air supply means provided on the outer side of the outer tub, a driving motor for rotating the rotating drum, and controlling the rotation of the driving motor In a drum-type washer / dryer equipped with a control device and performing hot air dehydration by increasing the number of revolutions and time stepwise in multiple steps,
If an imbalance occurs, the unbalance correction rotation is performed within the time of that stage, and when the time for the hot air dehydration of the next stage is reached, the process proceeds to the hot air dehydration of the next stage. The drum-type washing and drying machine is controlled so that the end time of hot air dehydration is constant.   After passing the hot air dehydration process, in the replacement process in which the drum is rotated forward and reverse to dry it by applying hot air to the clothes, the rotation is adjusted to the maximum load, the number of rotation change steps, and each rotation required. The drum-type washing / drying machine according to claim 1, wherein control for changing time is performed.   Regarding forward / reverse rotation according to claim 2, since it is difficult to change clothes when the load is 80% or more, in order to change the position of the clothes little by little, control is performed so as to change the time required for forward / reverse rotation. A drum-type washing and drying machine characterized by that.   4. The drum rotation according to claim 3, wherein the position of the hot air outlet is taken into consideration and the glass cut surface of the door is tilted toward the hot air outlet so that the hot air efficiently hits the clothes and the lifter is inclined. In a drum-type washer / dryer having a structure in which clothing sometimes slips down obliquely along the lifter and the rear clothing comes out to the front, the same applies if the hot air outlet is on the right side when viewed from the front of the main unit. Control the drum's left rotation time as viewed from the front, and if the hot air outlet is on the left side, increase the drum's right rotation time, and increase the rotation time in the direction where hot air is efficiently applied to clothing. Drum type washing and drying machine.   In claim 4, when the load is small, it is easy to change clothes and there is no need to change the left and right time, and in order to prevent the twist of clothes in consideration of finishing improvement, A drum-type washing and drying machine characterized by controlling the rotation time equally.

Images