JP6956053B2 - Washing and drying machine - Google Patents

Description

The present invention relates to a drum-type washer-dryer that dries while rotating a drum that houses clothes.

Drying of clothes by a washer / dryer that can continuously perform from washing to drying is carried out by creating high-temperature and low-humidity air with a heat source and blowing the air into the washing tub with a blower fan. High temperature and low humidity air raises the temperature of clothing and evaporates moisture from clothing. Evaporated water is discharged to the outside of the machine.

Further, as a method for improving the drying finish of clothes, Patent Document 1 describes a drum-type washer-dryer that blows high-speed wind directly onto clothes to smooth out wrinkles by the force of the wind. In such a drum-type washer-dryer, a blower unit including a fan for generating high-speed wind is formed in the upper right corner or the upper left corner formed between the cylindrical drum and the box-shaped housing. It is installed in. Then, while repeatedly rotating the drum clockwise and counterclockwise, the clothes are lifted and dropped inside the drum, and a high-speed wind is blown toward the clothes from a nozzle provided downstream of the blower unit. It is configured.

In Patent Document 2 below, in a drum having a diameter of 600 mm and a volume of 75 L, which has the same configuration as Patent Document 1, the rotation speed of the drum is 47 to 55 min-1 and the rotation time is 40 to 60 s. The machine is listed. Further, Patent Document 3 describes a drum-type washer-drying machine having the same configuration as that of Patent Document 1, having a diameter of 530 mm and a depth of 394 mm, with a drum rotation speed of 47 to 55 min-1 and a rotation time of 10 to 30 s. The machine is listed. Further, Patent Document 3 also describes that the rotation time of the drum is set to 15 s in the first half of drying and 30 s in the second half of drying to improve the drying finish and the drying efficiency. Further, in Patent Document 4, the rotation speed of the drum is set to the rotation speed (60min-1 to 70min-1) at which clothes stick to the drum by centrifugal force in the same configuration as in Patent Document 1, and the rotation time of the drum is set. A drum type washer-dryer with a short time of about 2 s to 15 s is described.

Japanese Unexamined Patent Publication No. 2009-034405 Japanese Unexamined Patent Publication No. 2009-072495 Japanese Unexamined Patent Publication No. 2013-0708030 Japanese Unexamined Patent Publication No. 2018-019866

Even if there is no entanglement or twisting, if the amount of clothes is large relative to the volume of the dryer, the clothes cannot be spread sufficiently, so that the clothes are dried while being bent, and wrinkles occur. In the conventional drum-type washer-dryer described above, the number of rotations and the rotation time of the drum that rotates clockwise or counterclockwise during the drying operation are set so that the clothes housed in the drum are evenly exposed to high-speed wind. It has a good dry finish and less uneven drying. By doing so, the drying finish of clothes is significantly improved as compared with a general drum-type washer-dryer. The dry finish deteriorates as the amount of clothing increases relative to the drum volume. The drying capacity of the drum-type washer-dryer of Patent Document 2 and Patent Document 3 is 6 kg, but up to about 3 kg is a good finish with few wrinkles. Further, in the drum type washing machine of Patent Document 4, by increasing the rotation speed of the drum and shortening the rotation time of the drum, even if the amount of clothes increases, the sleeves due to the relative movement between clothes or between parts of the same clothes. Twisting and entanglement can be suppressed, and by applying high-speed wind evenly to the clothes, even if the amount of clothes increases, the degree of deterioration of the dry finish is suppressed and the finish is improved. However, for example, when the amount of clothing is as large as 4 kg or 5 kg with respect to the drying capacity of 6 kg, wrinkles on the body and sleeves become conspicuous. One of the reasons for this is that as the amount of clothing increases, the amount of clothing increases with respect to the volume of the drum, making it difficult for the clothing to spread in the drum. It has long been known that wrinkles can be reduced by increasing the volume of the drum. There is a limit to the size, and it is difficult to secure a sufficient volume.

An object of the present invention is to provide a washer / dryer having an improved drying finish without increasing the volume of the drum even if the amount of clothes is increased.

A feature of the present invention in order to achieve the above object is to have a rotary drum in which clothing is housed, a motor for driving the rotary drum, and a housing for supporting the rotary drum. In a drum-type washer-dryer that reverse-rotates and operates by the motor, a means for blowing wind on clothes housed in the rotating drum is provided during the drying operation, and the means for blowing the wind is blown. It is composed of means, an outlet provided on the discharge side of the blower means, and an air passage connecting them, and during the drying operation, clothes housed in the rotary drum are subjected to centrifugal force on the inner wall surface of the rotary drum. combination of the first step of a predetermined time continuously rotating the rotary drum while sticking, a second step of a predetermined time continuously rotating the rotary drum at a high Ri by rpm rotational speed of the first step, with the rotation The clothes are dropped when the rotation direction of the drum is reversed, and the rotation speed of the second step is 1.6 times or more and twice or less the rotation speed of the first step, and at the lowest resonance rotation speed or less of the rotating drum. Oh, wherein the Rukoto.

Further, the rotation speed N2 is 1.6 times or more and twice or less the rotation speed N1 and is equal to or less than the lowest resonance rotation speed of the rotating drum.

Specifically, the rotation speed N1 of the rotating drum was set to 55 min-1 or more and 70 min-1 or less.

Further, the rotation time of the rotating drum at the rotation speeds N1 and N2 is 5 seconds or more and 15 seconds or less.

According to the present invention, it is possible to provide a washer / dryer having an improved drying finish without increasing the volume of the drum even if the amount of clothes is increased.

It is an external view of the drum type washer-dryer of this Example. It is sectional drawing which shows the internal structure of the drum type washer-dryer of this Example. It is a block diagram of the control device of the drum type washer-dryer of this Example. It is a figure which shows the state when the drum is rotated by about 55min-1 when the amount of clothes is small. It is a figure which shows the state when the drum is rotated by about 60min-1 when the amount of clothes is small. It is a figure which shows the state when the drum is rotated by about 60min-1 when the amount of clothes is large. It is a figure which shows the state when the drum is rotated by about 100min-1 when the amount of clothes is large. It conceptually shows the relationship between the drum rotation speed and the dry finish when the drying operation is performed with a cloth amount of 70 to 80% of the drying capacity. It is a figure which shows the example of the dry finish by the conventional and the dry finish by this Example.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is an external view of a drum-type washer-dryer, and FIG. 2 is a cross-sectional view showing an internal structure.

In each figure, reference number 1 is a housing constituting the outer shell, and the housing 1 is mounted on a square base 1h, and the left and right side plates 1a and 1b (not shown), the front cover 1c, and the like. It is composed of a back cover 1d, a top cover 1e, and a lower front cover 1f.

The left and right side plates 1a and 1b are connected by a U-shaped upper reinforcing material, a front reinforcing material, and a rear reinforcing material (not shown above) to form a box-shaped housing 1 including the base 1h. It has sufficient strength as a housing.

Reference number 9 is a door provided in the center of the front cover 1c that closes an insertion port for putting in and taking out clothes, and is supported by a hinge provided on the front reinforcing material so as to be openable and closable. By pulling the door opening lever 9a, the lock mechanism (not shown) is released, the door 9 is opened, and by pressing the door 9 against the front cover 1c, the door 9 is locked and closed. The front reinforcing material has a circular opening for putting in and taking out clothes concentrically with the opening of the outer tank described later.

Reference number 2 is an operation panel provided in the center of the upper part of the housing 1, which includes a power switch 3, operation switches 4, 5, and a display 6, and the operation panel 2 is a control device provided in the upper part of the housing 1. It is electrically connected to 33.

Reference number 7 is a rotatably supported cylindrical washing and dehydrating tub (rotary drum), the outer wall and bottom wall of which has numerous through holes for water and ventilation, and clothing on the front end face. An opening 7a is provided for taking in and out.

A fluid balancer 7b integrated with the washing / dehydrating tub 7 is provided on the outside of the opening 7a. A plurality of lifters 7c extending in the axial direction are provided inside the outer wall, and when the washing / dehydrating tank 7 is rotated during washing and drying, the clothes are lifted along the outer wall by the lifter 7c and centrifugal force and fall by gravity. Repeat the movement to do. The rotation center axis of the washing / dehydrating tub 7 is inclined so as to be horizontal or higher on the opening 7a side.

Reference number 8 is a cylindrical outer tub, which includes the washing / dehydrating tub 7 coaxially, the front surface is open, and the motor 10 is attached to the outer center of the rear end surface. The rotating shaft of the motor 10 penetrates the outer tub 8 and is coupled to the washing / dehydrating tub 7.

An outer tank cover 8a is provided at the opening on the front surface to allow water to be stored in the outer tank 8. An opening 8b for putting in and taking out clothes is provided in the center of the front side of the outer tank cover 8a. The opening 8b and the opening provided in the front reinforcing material are connected by a rubber bellows 11, and the outer tank 8 is water-sealed by closing the door 9.

A drainage port 12 is provided at the bottom of the bottom surface of the outer tank 8, and a drainage hose 13 is connected to the drainage port 12. A drain valve 14 is provided in the middle of the drain hose 13, and by closing the drain valve and supplying water, water is stored in the outer tank 8, and the drain valve is opened to discharge the water in the outer tank 8 to the outside of the machine. The outer tank cover 8a has an overflow port on the front outer wall portion, and is connected to the drain hose 13 on the downstream side of the drain valve 14 by the overflow hose 15.

The outer tank 8 is vibration-proof supported by a suspension 16 (composed of a coil spring and a damper) whose lower side is fixed to the base 1h. Further, the upper side of the outer tub 8 is supported by an auxiliary spring (not shown) attached to the upper reinforcing member to prevent the outer tub 8 from falling in the front-rear direction.

Reference number 17 is a detergent container provided on the upper left side of the housing 1, and is equipped with an open / close lid type detergent tray. The detergent container 17 is fixed to the upper reinforcing material of the housing 1.

On the back side of the detergent container 17, parts related to water supply such as a water supply solenoid valve 18, a bath water water supply pump 20, and a water level sensor 21 (not shown above) are provided. The upper surface cover 1e is provided with a water supply hose connection port 18a from a water tap and a water absorption hose connection port 18b for the remaining hot water of the bath. The water supply solenoid valve 18 includes a main water supply solenoid valve 18c, a finishing agent water supply solenoid valve 18d, a cooling water water supply solenoid valve 18e, and the like. One of the detergent containers 17 is connected to the main water supply electromagnetic valve 18c and the bath water water supply pump 20, and the other is connected to the outer tank 8. By opening the main water supply electromagnetic valve 18c or operating the bath water water supply pump 20. , The washing water is supplied to the outer tub 8 and the washing / dehydrating tub 7 together with the detergent charged in the detergent container 17. Further, by opening the finishing agent water supply solenoid valve 18d, washing water is supplied to the outer tub 8 together with the soft finishing agent charged in the detergent container 17.

Reference number 19 is a circulation duct installed vertically inside the back surface of the outer tub 7, and the lower portion of the circulation duct 19 is opened in the outer tub 8 by an intake port 2a below the back surface of the outer tub 8. A water-cooled dehumidifying mechanism is built in the circulation duct 19. The water-cooled dehumidifying mechanism is composed of a cooling nozzle 31 and a plurality of dehumidifying ribs 32 installed on the wall surface of the circulation duct 19. The dehumidifying rib 32 is installed from the vicinity of the cooling water outlet of the cooling nozzle 31 to the vicinity of the intake port 2a below the circulation duct 19. The horizontal cross-sectional shape of the dehumidifying rib 32 may be a convex shape or a concave groove shape. The cooling nozzle 31 is connected to the cooling water supply solenoid valve 18e by a cooling water hose 31a, and the cooling water is supplied to the cooling nozzle 31 by opening the cooling water supply solenoid valve 18e. The cooling water slowly flows down between the dehumidifying ribs 32, enters the outer tank 7 from the intake port 2a, and is discharged from the drain port 12. Further, the main water supply solenoid valve 18c and the circulation duct 19 are connected by a cleaning hose (not shown) separately from the cooling water hose 31a, and the cleaning water for cleaning the inside of the circulation duct 19 is opened by opening the main water supply solenoid valve 18c. To supply. The wash water travels along the wall surface of the circulation duct to wash away dust adhering to the wall surface.

The upper part of the circulation duct 19 is connected to the filter duct 27 installed at the rear upper part in the housing 1 by a rubber bellows 42. An opening is provided on the upper surface of the filter duct 27, and a pull-out type drying filter 30 is inserted into the opening.

The air that has entered the filter duct 27 from the circulation duct 19 flows into the mesh filter (not shown) of the drying filter 30 to remove lint. The drying filter 30 is cleaned by pulling out the drying filter and using a hand, a brush, a vacuum cleaner, or the like to surface the surface of the mesh filter. An opening is provided on the side surface of the drying filter 30 insertion portion of the filter duct 27, the intake duct 29 is connected to this opening, and the other end of the intake duct 29 is connected to the intake port of the blower unit 28. ing.

The blower unit 28 includes a driving motor 28a, a fan impeller 28c, and a fan case 28b. A heater 43 is built in the fan case 28b, and heats the air sent from the fan impeller 28c.

The heater 43 can switch the input, and the heater of this embodiment has a strong mode and a weak mode. The discharge port of the blower unit 28 is connected to the warm air duct 41. The warm air duct 41 is connected to the front outlet 44 provided on the outer tank cover 8a via a rubber bellows pipe 41a and a bellows pipe joint 41b. The front outlet 44 opens toward the inside of the washing / dehydrating tub 7, and the wind blown from the front outlet 44 directly hits the clothes in the washing / dehydrating tub 7.

In this embodiment, since the blower unit 28 is provided on the upper right side in the housing 1, the front outlet 44 is provided at a position diagonally above the right of the outer tank cover 8a, and the distance to the front outlet 44 is set. It is kept as short as possible to minimize pressure loss and heat escape.

A temperature sensor 34 is provided at the outlet of the drain port 12, a temperature sensor 34 is provided at the inlet of the blower unit 28, and a temperature sensor 35 is provided at the outlet of the heater 43.

The wind flow during the dry operation is as follows. When the blower unit 28 is operated and the heater 43 is energized, warm air is blown into the washing / dehydrating tank 7 from the front outlet 44, hits the wet clothes to warm the clothes, and the moisture evaporates from the clothes. During the drying operation, since the washing / dehydrating tub 7 is rotated in the forward and reverse directions, the clothes are repeatedly lifted by the lifter 7c and dropped by gravity, and warm air is evenly distributed to the clothes. The hot and humid air flows into the outer tub 8 through the through hole provided in the washing / dehydrating tub 7, is sucked into the circulation duct 19 from the intake port 2a, and flows through the circulation duct 19 from the bottom to the top. Cooling water is flowing down to the water-cooled dehumidifying mechanism provided on the wall surface of the circulation duct 19, and the hot and humid air is cooled and dehumidified by coming into contact with the cooling water, becomes dry low-temperature air, and enters the drying filter 30. The lint is removed through the mesh filter provided in the drying filter 30 and sucked into the blower unit 28. Then, after being pressurized by the blower unit 28, it is heated again by the heater 43 and circulated so as to be blown into the washing / dehydrating tank 7. A temperature sensor 34 is provided between the mesh filter and the blower unit 28 to measure the temperature of the circulating air.

FIG. 3 is a block diagram of the control device 33 of the drum type washer / dryer. Reference numeral 50 denotes a microcomputer, which is connected to an operation button input circuit 51, a water level sensor 21, and temperature sensors 34, 35, and 36 connected to the operation buttons 4 and 5, and is used in the user's button operation, washing process, and drying process. Receives various information signals. The output from the microcomputer 50 is connected to the drive circuit 54, and is connected to the water supply solenoid valve 18 (18c, 18d, 18e), the drain valve 14, the motor 10, the blower unit 28, the heater 43, the bath water supply pump 20, and the like. , Control the opening / closing, rotation, and energization of these. Further, it is connected to a 7-segment light emitting diode or a liquid crystal display 6 or a buzzer 57 for notifying the user of the operating state of the washer / dryer.

Next, the movement of clothes in the drum (washing / dehydrating tub 7) during the drying operation will be described with reference to FIGS. 4 to 7. The figure is a schematic view of the inside of the drum seen from the opening 7a side of the drum 7. The nozzle (front outlet 44) is obliquely upward to the right of the drum. During the drying operation, the drum repeats "right rotation-> stop-> left rotation-> stop", but all the figures show the case of right rotation. As shown in FIG. 4, when the drum volume has a margin for the amount of clothes (the amount of clothes is relatively small), the clothes in the drum are drummed by the centrifugal force due to the rotation of the drum and the action of the lifter 7c. It is lifted from the bottom to near the top of the drum and repeatedly falls by gravity (arrow A). The rotation speed of the drum at this time is 47 to 55 min-1. A high-speed wind from the nozzle hits the clothes near the beginning of the fall, smoothing out the wrinkles of the clothes. Observing the movement of the clothes in detail at this time, the clothes A falling on the drum surface move to roll on the drum surface as shown by the arrow B immediately after the fall due to the difference between the falling direction of the clothes and the rotation direction of the drum. do. At this time, clothing may be twisted or entangled. Also, since the elongated part like the sleeve of a shirt moves away from the body part, the light sleeve part may fall first, and the body part may fall later, and the sleeve part may fall. It may be twisted or entangled with other clothing. In this way, when relative movement occurs between clothes or between parts of the same clothes, it causes an increase in wrinkles. Therefore, if the rotation time in one direction of the drum is too long, there is a problem that twisting and entanglement of clothes increase.

In order to solve this problem, in the prior art document (Patent Document 4), in order to suppress the relative movement of the clothes, as shown in FIG. 5, the rotation speed of the drum is set to the extent that the clothes stick to the drum by centrifugal force. It is high (about 60min-1). However, since the clothes are not replaced as they are, the rotation time of the drum 7 in one direction is shortened (about 5 seconds). Once the rotation of the drum is stopped in order to reverse the rotation direction of the drum, the clothes fall at almost the same time as shown by the arrow C. Then, when the drum is rotated in the opposite direction, the positional relationship of each garment changes, and the garments are replaced. By doing so, the number of times the clothes are dropped is approximately once per rotation, and the occurrence of wrinkles due to twisting and entanglement is suppressed as compared with the case where the clothes are repeatedly dropped during one-way rotation.

However, as the amount of clothing increases, it becomes as shown in FIG. 6 from the state of FIG. Since the number of rotations of the drum is increased to the extent that the clothes stick to the drum by centrifugal force, twisting and entanglement caused by the relative movement of the clothes can be suppressed, but high-speed wind does not easily hit the clothes near the center of the drum, and the outside The finish is lower than that of clothing. Further, since the margin space of the drum is small and the amount of clothes dropped when the drum is stopped is small as shown by the arrow D in the figure, the clothes are not sufficiently replaced when the drum is reversed. Therefore, in the method of Patent Document 4, as the amount of clothing increases, the variation in dry finish and uneven drying tend to increase.

In order to solve this, in this embodiment, the rotation speed of the drum is further increased. FIG. 7 shows the state of clothing in the drum in that case. In FIG. 6, the drum rotation speed was about 60 min-1, but when the drum rotation speed was increased from this state, the clothes were pushed outward by the centrifugal force, so that the clothes in the center also had a high-speed wind. It can be moved to the hit position. In addition, since a space is created in the central portion, clothes exposed to high-speed wind from the outside can be easily stretched, and wrinkles can be efficiently smoothed. In addition, since warm air can easily pass to the inner part of the central space, it is also effective in reducing uneven drying. When the drum is stopped, clothes fall as shown by the arrow E in the figure, but since the head at this time is larger than that in the case of FIG. 6, there is an effect of increasing the replacement of clothes. The rotation time of the drum is shortened as in Patent Document 4.

FIG. 8 conceptually shows the relationship between the drum rotation speed and the dry finish when the drying operation is performed with a cloth amount of 70 to 80% of the drying capacity. The rotation time of the drum is as short as 5 seconds or more and 10 seconds or less. Clothes with a good finish are often found on the outside (outer circumference side) of the drum. When the drum rotation speed is low, the finish is deteriorated because it is difficult for the clothes to be lifted in the drum and it is difficult for the clothes to reach the vicinity of the nozzle. However, since the amount of clothing in the drum is large, the degree of deterioration is smaller than when the amount of clothing is small. There is a rotation speed NL where the finish is the highest near the rotation speed N1 where the clothes stick to the drum due to centrifugal force, and the finish gradually deteriorates as the drum rotation speed is further increased. .. This is because the clothes are pushed (compressed) by the centrifugal force.

Poorly finished clothing is often found on the inside of the drum (near the center). When the drum rotation speed is low, the finish is poor because the high-speed wind does not hit the clothes, but after the drum rotation speed exceeds N1, the inner clothes move outward due to centrifugal force as the rotation speed increases. The frequency of high-speed wind hits increases, and the finish improves. However, when the drum rotation speed is high, the finish of the outer garment deteriorates, so that there is an upper limit rotation speed NH. Here, NH is set to a rotation speed that is comparable to the best finish of the outer garment.

As described above, the drum rotation speed at which the finish is the best differs between the outer garment and the inner garment. Therefore, the rotation speed of the drum may be set to a single rotation speed between NL and NH (for example, NM at the intersection), or a combination in which the NL is rotated for a certain period of time and then the NH is rotated for a certain period of time. , NL to NH may be repeatedly accelerated and decelerated at a constant acceleration. In any case, the rotation time in one direction (including the acceleration and deceleration times) is preferably set to about 5 to 15 seconds in order to suppress twisting and entanglement of the clothes.

At a drum rotation speed of N1 or higher, clothing sticks to the drum by centrifugal force, but it rarely sticks uniformly in the circumferential direction of the drum, and in most cases, bias occurs. For this reason, imbalance occurs due to the bias of clothing. If the rotation speed of the drum is set too high while the clothes are biased, the vibration of the drum becomes large due to the imbalance. Therefore, the rotation speed of the drum has an upper limit from the viewpoint of vibration. A normal drum-type washer-dryer is vibration-proof and supported by a suspension, but has a resonance point, and what appears at the lowest rotation speed is the resonance in which the drum (outer tank) vibrates from side to side. Therefore, it is better to set the upper limit rotation speed NH at a rotation speed sufficiently lower than this resonance point. In the normal dehydration operation, in order to reduce the bias of clothes, after performing a loosening operation in which the drum is repeatedly inverted left and right at a low speed, the rotation speed of the drum is increased while detecting the bias of clothes. ing. However, if the loosening operation is performed for a long time, the clothes may be twisted or entangled, so it is better not to perform the loosening operation in terms of the dry finish.

Next, the drum rotation speeds NL and NH will be described by taking an actual drum-type washer-dryer as an example. The drum type washer-dryer has a drying capacity of 6 kg, a drum diameter of 530 mm, and a drum volume of 78 L. In this case, N1 is preferably 55 to 60 min-1, NL is preferably 60 min-1, and NH is preferably about 100 min-1. The lowest resonance rotation speed of this drum-type washer-dryer is 150 min-1 or more and 160 min-1 or less, and NH is sufficiently lower than this rotation speed, so that large vibration does not occur. Therefore, the drum rotation speed NL is almost the same as the rotation speed N1 at which clothing sticks to the drum (for example, 55min-1 or more and 70min-1 or less), and the drum rotation speed NH is 1.6 times or more and twice or less (for example, 80min-) of N1. It can be seen that it should be set to 1 or more and 120 min-1 or less).

With this drum rotation speed, the rotation time is 10 seconds for NL and 10 seconds for NH for right rotation, 7 seconds for NL and 10 seconds for NH for left rotation, and an example of a dry finish when the amount of cloth is 4.5 kg. Is shown in FIG. As a comparison, the finish in the conventional case (Patent Document 4) in which the drum rotation speed is 60 min-1 and the rotation time is 7 seconds is shown for both left and right rotation. The rotation time here includes the acceleration and deceleration times. The clothing is a 100% cotton casual shirt that is prone to dry wrinkles. In the conventional finish, since it is difficult for high-speed wind to hit, there are many wrinkles on the body and there are parts where the sleeves are crushed. You can see that it has improved significantly. Under the conventional conditions, some clothing has a finish close to that of the present embodiment, but as shown in this figure, some clothing has a poor finish, and the finish varies. On the other hand, in this embodiment, clothes having an extremely poor finish are not generated, and a dry finish with little variation can be realized.

The above drum rotation speed is for a drum diameter of 530 mm, and the centrifugal force differs depending on the drum diameter even if the drum rotation speed is the same. Therefore, the drum rotation speeds NL and NH may be set accordingly, but the NL is N1. The relationship that NH is 1.6 times or more and 2 times or less of N1 is the same.

According to this embodiment, continuous rotation in one direction in a state where the drum rotation speed belongs to NL (for example, a range of 55 min-1 or more and 70 min-1 or less), that is, a state excluding acceleration and deceleration times. Is set to 3 seconds or more and 14 seconds or less, and then the clothes are rotated in the opposite direction, so that the positional relationship of the clothes is changed and the clothes are replaced. Further, the continuous rotation in one direction in a state where the drum rotation speed belongs to NH (for example, a range of 80 min-1 or more and 120 min-1 or less), that is, a state excluding the acceleration or deceleration time, is performed for 3 seconds or more 14 If the number of seconds is set to less than a second, the clothes are pushed outward by centrifugal force and a space is created in the center, so that the high-speed wind hits the clothes and wrinkles are likely to grow. Here, by shortening the continuous rotation time as described above, the occurrence of entanglement and twisting of clothing is suppressed.

Next, another embodiment regarding the rotation speed and the rotation time of the drum will be described. If the clothes are sufficiently moist, the wrinkles on the clothes can be easily removed. As the drying progresses and the degree of drying becomes higher (0.9 to 0.95 in the case of cotton), the wrinkles are fixed and cannot be easily removed. The degree of dryness is the weight of the dry cloth divided by the weight of the compress. Therefore, at least until the degree of dryness at which wrinkles are fixed, the operation combining the drum rotation speeds described above is executed. If there are few wrinkles at this point, wrinkles will hardly increase unless extreme entanglement or twisting occurs in the subsequent drying operation. In drying, it is necessary to suppress the occurrence of uneven drying in addition to suppressing the occurrence of wrinkles in clothes.

As described above, in this embodiment, in order to suppress the entanglement and twisting of clothes due to falling and rolling in the drum, the relative position of the clothes in the drum is not changed during the drum rotation, and the drum is rotated. The clothes are changed only when the drum stops and restarts when the direction is reversed. Therefore, as the number of times the drum rotation direction is reversed increases, the clothes are replaced more often.

Therefore, in the latter half of the drying operation, in which the drying degree is higher than the degree of drying in which the wrinkles of the clothes are fixed, the inversion cycle of the drum is shorter than that in the first half of the drying operation, and is set to, for example, 2 seconds or more and 7 seconds or less. At this time, the rotation speed of the drum may be a combination of the two rotation speeds as described above, or may be a single rotation speed. The range of the drum rotation speed in this case is set to an arbitrary rotation speed from NL to NH. By doing so, while suppressing the occurrence of wrinkles, the change of clothes is promoted, and uneven drying can be reduced.

1 ... Housing, 2 ... Operation panel, 3 ... Power switch, 4, 5 ... Operation switch, 6 ... Display, 7 ... Washing and dehumidifying tank, 7c ... Lifter, 8 ... Outer tank, 9 ... Door, 10 ... Motor , 11 ... Bellows, 12 ... Drain port, 13 ... Drain hose, 14 ... Drain valve, 15 ... Overflow, 16 ... Suspension, 17 ... Dehumidifier container, 18 ... Water supply electromagnetic valve, 19 ... Circulation duct, 22 ... Drying filter, 27 ... Filter duct, 28 blower unit, 29 ... Air passage switching valve, 30 ... Drying filter, 31 ... Water-cooled dehumidifying mechanism (cooling nozzle), 32 ... Dehumidifying rib, 33 ... Control device, 34, 35, 36 ... Temperature sensor, 41 ... warm air duct, 43 ... heater, 44 ... front outlet

Claims (1)

A drum-type washer-dryer that has a rotary drum that houses clothes, a motor that drives the rotary drum, and a housing that supports the rotary drum, and reverse-rotates the rotary drum with the motor to perform drying operation. In
During the drying operation, a means for blowing wind on the clothes housed in the rotating drum is provided, and the means for blowing the wind is a blowing means, an outlet provided on the discharge side of the blowing means, and connecting them. Consists of the air passage
Wherein during drying operation, a first step of garment the housed in the rotary drum by a predetermined time continuously rotating the rotary drum while sticking to the centrifugal force on the inner wall surface of the rotary drum, the rotation speed of the first step In combination with the second step of continuously rotating the rotating drum for a predetermined time at a higher rotation speed, the clothes are dropped when the rotation direction of the rotating drum is reversed .
A drum-type washer-dryer characterized in that the rotation speed of the second step is 1.6 times or more and twice or less the rotation speed of the first step, and is not less than the lowest resonance rotation speed of the rotating drum. ..

Images