JP2013150659A - Clothes dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clothes dryer that is capable of sufficiently eliminating drying unevenness with respect to all clothing located at the rear part, at the front part and at the central part therebetween in a drum, and is capable of sufficiently solving the problem of damaging to clothing and waste of energy caused by over-drying of clothing.SOLUTION: There is provided a clothes dryer in which a first air inlet for supplying warm air to the inside of a drum is formed at the rear part of an outer tub and a second air inlet for supplying warm air also to the inside of the drum is formed at the front part of the outer tub. The clothes dryer dries clothing by, while supplying warm air to the inside of the outer tub from the first air inlet and the second air inlet by switching the supply modes between the supplying simultaneously from both of the first and the second air inlets and the supplying from either one of the first and the second air inlets, controlling the drum to rotate at a speed where clothing is lifted up and dropped off (an agitation drying control) and controlling the drum to rotate at a speed where clothing is stuck to the internal circumferential face of the drum (a centrifugal force drying control).

Description

  Embodiments described herein relate generally to a clothes dryer.

2. Description of the Related Art Conventionally, in a clothes dryer, a drum for storing clothes is arranged inside the outer tub, and the clothes are stirred by rotating the drum by a drum driving device such as a motor from the outside of the outer tub. By supplying warm air from the outside to the inside of the outer tub and the inside of the drum by the warm air supply device, the warm air is brought into contact with the clothes being stirred and dried.
In this case, the air supply port for supplying hot air to the inside of the drum is generally provided at the rear part of the outer tub. Therefore, in this case, the hot air is supplied to the outer tub. The garment is dried by continuing to be supplied to the inside of the drum from the rear.

  For this reason, drying of the clothing located in the rear part in the drum proceeds first, and it is likely that the drying of the clothing located in the front part in the drum is delayed. Therefore, when the drying rate is 100% up to the clothing located in the front part of the drum, the clothing located in the rear part of the drum has a drying rate exceeding 100%, resulting in uneven drying. Moreover, the clothes located in the rear part in the drum are damaged by shrinkage due to overdrying when the drying rate exceeds 100%. Furthermore, it becomes a waste of energy by becoming the overdrying.

  On the other hand, in Patent Document 1 below, there is a description in which an air supply port for supplying warm air to the inside of the drum is provided in the front part of the outer tub. It is described that an air supply port for supplying warm air to the inside of the drum is provided at the rear and front of the outer tub.

Japanese Patent No. 4538093 JP 2011-83457 A

  What is described in the above-mentioned patent document 1 is that the warm air continues to be supplied from the front part of the outer tub to the inside of the drum to dry the clothes. The drying of the clothing positioned at the front portion in the drum proceeds first, and the drying of the clothing positioned at the rear portion in the drum tends to be delayed. Therefore, there is no change in that the clothes are easily dried, and the uneven drying tends to occur, and the problem of damage caused by excessive drying of clothes and the waste of energy are not solved.

On the other hand, what is described in Patent Document 2 is to dry clothing by warm air being switched from the front and rear of the outer tub during operation to be supplied to the inside of the drum. In some cases, it is possible to switch between drying the clothing located in the rear part of the drum and drying the clothing located in the front part of the drum. It is considered that the problem of wasting energy is also solved to some extent.
However, the clothing located in the middle part between the rear part and the front part in the drum has an event that the drying of the clothes is delayed, resulting in uneven drying. The problem of damage caused by overdrying and waste of energy cannot be fully resolved.

  Therefore, clothes that can sufficiently eliminate drying unevenness and all the problems of waste caused by excessive drying of clothes and waste of energy for all of the clothes located in the rear part and front part of the drum and the central part between them. Provide a dryer.

  The clothes dryer of the present embodiment supplies a drum for storing clothes, an outer tub for storing the drum, a drum driving device for rotating the drum, and hot air from the outside of the outer tub to the inside of the drum. A first air supply port for supplying the hot air is formed in a rear portion of the outer tub, and a second air supply port for supplying the hot air is provided. Forming in the front of the outer tub, supplying hot air by switching either the first air supply port and the second air supply port at the same time or either of the inside of the outer tub, The clothes are dried by performing control to rotate the drum at a speed at which the clothes are lifted and then dropped, and control to rotate the clothes at a speed to attach the clothes to the inner peripheral surface of the drum. It is characterized by.

Action explanatory drawing which shows 1st Embodiment that 1 Perspective view from the front of the in-flight structure from the base Perspective view from the rear of the in-flight structure from the base Schematic longitudinal side view of the aircraft structure Schematic diagram showing the structure of the heat pump together with the structure of the ventilation path Enlarged perspective view of the air volume adjustment damper Action explanation diagram 2 Action diagram 3 Action explanatory view showing the second embodiment

Hereinafter, a first embodiment applied to a drum type washing and drying machine will be described with reference to FIGS.
First, FIG. 2 and FIG. 3 show the in-machine structure 2 from the base 1 of the drum-type washing and drying machine. The structure 2 is covered. As shown in FIG. 4, the in-machine structure 2 is mainly composed of a water tank 3. The water tank 3 has a horizontal cylindrical shape in which the axial direction is front and back, and is elastically supported by a pair of left and right suspensions 4 shown in FIGS. Accordingly, the water tank 3 has a high front portion and a low rear portion.

  A motor 5 shown in FIG. 3 is attached to the back of the water tank 3. In this case, the motor 5 is, for example, a direct current brushless motor and has an outer rotor type. A rotating shaft (not shown) is inserted into the water tank 3.

  A drum 6 shown in FIGS. 2 and 4 is accommodated in the water tank 3. This drum 6 also has a horizontal cylindrical shape whose front and rear are axial, and by attaching it to the tip of the rotating shaft of the motor 5 at the center of the rear, the drum 6 has an upwardly inclined shape coaxial with the water tank 3. I support it. As a result, the drum 6 is rotated directly by the motor 5, so the drum 6 is a rotating tub, the water tub 3 is an outer tub containing the drum 6, and the motor 5 It functions as a drum driving device that rotates.

A large number of small holes 7 shown in FIG. 2 are formed over the entire area on the peripheral side portion (body portion) of the drum 6, and a plurality of baffles 8 for picking up clothes are provided (only one is shown).
In addition, although not shown, the water tank 3 includes a water supply device including a water supply valve for supplying water from the inside of the water tank 3 to the inside of the drum 6 and a drain valve for discharging the water in the water tank 3 from the drum 6 to the outside. The first drainage device is provided.

  On the other hand, a heat pump unit 9 shown in FIG. 3 and FIG. The heat pump unit 9 includes a compressor 13 having an accumulator 12 shown in FIG. 5, a condenser 14, a throttle valve 15 as a throttle, and an evaporator 16 disposed in a unit case 11. These are cycle-connected in the order shown in FIG. 5 to constitute a heat pump (refrigeration cycle) 17. Note that a refrigerant is sealed in the heat pump 17, and in the unit case 11, although not shown in detail, an air passage passing through the evaporator 16 and the condenser 14 in order from the windward side, the compressor 13, and the throttle valve The space where 15 is arranged is separated by a partition wall.

  3 and FIG. 4 of the unit case 11, an air inlet 18 connected to the air path passing through the evaporator 16 and the condenser 14 is formed in the upper portion of the left end portion. An exhaust duct 19 for the water tank 3 is connected. The exhaust duct 19 is composed of an upper exhaust duct 19a that is a first exhaust duct and a rear exhaust duct 19b that is a second exhaust duct, and the rear exhaust duct 19b of the exhaust duct 19 is arranged on the back of the water tank 3 in the vertical direction. The lower end portion of the unit case 11 is connected to the air inlet 18.

  The upper exhaust duct 19a is disposed in the upper part of the outer peripheral portion of the water tank 3 so that the front and rear axial directions are directed, and the upper end portion of the rear exhaust duct 19b is connected to the rear end portion. A filter storage portion 20 that opens upward is provided in the middle portion of the upper exhaust duct 19a. A filter 21 shown schematically in FIG. 4 is stored in the filter storage portion 20, and the filter 21 scatters exclusively from the clothing. It is designed to capture lint that does. A front end portion of the upper exhaust duct 19a is connected to an exhaust port 23 formed at a front portion of the upper portion of the water tank 3 through a bellows-shaped duct joint 22 shown in FIGS.

  The blower fan 10 is provided with a blower blade 10b shown in FIGS. 4 and 5 inside a casing 10a, and a motor 10c for rotating the blower blade 10b is arranged outside the casing 10a as shown in FIG. The casing 10a is arranged on the right side of the unit case 11 in FIG. 3, and the inlet (not shown) of the casing 10a passes through the evaporator 16 and the condenser 14 of the unit case 11. It connects with the exit part (not shown). The casing 10a has an outlet 10d at the top, and the outlet 10d is connected to the lower end of the air supply duct 25 via a bellows-shaped duct joint 24.

  The air supply duct 25 is composed of a first air passage 25a and a second air passage 25b, and the first air passage 25a is an outer peripheral portion of the back portion of the water tank 3, as shown in FIG. The lower base end portion is connected to the outlet portion 10d of the casing 10a via a bellows-shaped duct joint 24. On the other hand, a first air supply port 26 is formed in the rear part of the water tank 3, particularly in the upper part of the rear end plate part, and the first air supply port 26 is located above the first air passage 25 a. The tip of the is communicated.

  The second air passage 25b is branched from a bent portion at the upper part of the first air passage 25a via a box-like air amount adjustment trap 27, and from the air amount adjustment trap 27 to an upper portion in the outer peripheral portion of the drum 6. It is extended and arranged in the front and rear axial directions, and the middle part is bent into a crank shape or bent.

  As shown in FIGS. 2 and 4, the second air passage 25 b is a second air supply port 28 whose frontmost portion penetrates the upper part of the front edge of the water tank 3 and faces the inside of the water tank 3. Thus, the second air supply port 28 is formed in the front portion of the water tank 3, and the second air passage 25 b is connected to the second air supply port 28. On the other hand, the first air passage 25a is connected to the first air supply port 26 as described above, and between the first air supply port 26 and the second air supply port 28, The exhaust port 23 is located.

  The duct joint 22, the exhaust duct 19 (upper exhaust duct 19a, rear exhaust duct 19b), the air path passing through the evaporator 16 and the condenser 14 of the unit case 11, the blower fan 10 (casing 10a), the duct joint 24, A ventilation path 29 that connects the exhaust port 23 of the water tank 3 to the first and 26th air supply ports 26 and 28 by the air supply duct 25 (the first air passage 25a and the second air passage 25b). Is configured.

FIG. 5 schematically shows the ventilation path 29 together with the heat pump 17, and in addition, an exhaust temperature sensor 30 provided in the exhaust duct 19 and an air supply temperature sensor provided in the air supply duct 25. 31 is also shown.
FIG. 4 schematically shows the in-machine structure 2 described above.

  The air volume adjustment trap 27 in the ventilation path 29 is provided with an air volume adjustment damper 32 shown in FIGS. More specifically, the air volume adjusting damper 32 is provided inside the air volume adjusting trap 27 so as to rotate up and down with the one side portion 32a as a fulcrum. A geared motor 33 disposed outside the air volume adjusting trap 27 is provided. As a drive source, it is rotated. By the rotation, the air volume adjustment damper 32 changes the opening degree of the opening 27a (see FIG. 4) connected to the second air path 25b from the first air path 25a of the air supply duct 25 in the air volume adjustment trap 27. By changing the air volume from the first air path 25a to the second air path 25b through the opening 27a, the ratio of the air volume passing through the first air path 25a and the air volume passing through the second air path 25b is adjusted. It is supposed to be.

Next, the operation of the washing / drying machine having the above configuration will be described.
In the washing / drying machine having the above-described configuration, when a standard operation course is started, a washing process, a dehydration process, and a drying process are sequentially performed by a control device (control means) (not shown).

  The washing process includes a washing operation and a rinsing operation. In the washing operation, an operation of supplying water from the water tank 3 into the drum 6 by a water supply device (not shown) is performed, and then the motor 5 is operated. The drum 6 is alternately rotated in both forward and reverse directions at a low speed of about 40 to 60 [rpm]. As a result, the clothes housed in the drum 6 are repeatedly lifted and then dropped and stirred (tumbled) and washed. Thereafter, a drain valve (not shown) is opened, and the water in the drum 6 and the water tank 3 is discharged outside the apparatus.

In the rinsing operation, the same operation as that in the washing operation is performed. Therefore, after water is supplied from the water tank 3 into the drum 6, the drum 6 is alternately rotated in both forward and reverse directions at a low speed of about 40 to 60 [rpm]. Thus, the washed clothes in the drum 6 are repeatedly lifted and then dropped and stirred and rinsed.
In the next dewatering process, the drum 6 is rotated in one direction at a high speed of about 1000 rpm, thereby centrifugally dewatering the clothes after washing, and at the same time, the drain valve is opened. The discharged water is discharged outside the machine.

  Further, in the next drying process, the blower fan 10 is operated. Thereby, the air in the drum 6 is discharged from the water tank 3 through the duct joint 22 and the exhaust duct 19 in order from the exhaust port 23 of the water tank 3. The air discharged out of the water tank 3 then passes through the air passage through the evaporator 16 and the condenser 14 of the unit case 11, the blower fan 10, the duct joint 24, and the air supply duct 25 in this order, that is, through the air passage 29. Through the circulation, the first air inlet 26 and the second air inlet 28 of the water tank 3 are simultaneously blown into the water tank 3 and returned to the drum 6. As for the first air supply port 26 and the second air supply port 28, the first air supply port 26 is oriented closer to the axial direction of the drum 6 than the second air supply port 28. The warm air blown from the second air supply port 28 passes through the drum 6 along the axial direction of the drum 6.

  At this time, the operation of the compressor 13 of the heat pump 17 is started. As a result, the refrigerant sealed in the heat pump 17 is compressed to become a high-temperature and high-pressure refrigerant, and the high-temperature and high-pressure refrigerant flows into the condenser 14, and the air path passing through the evaporator 16 and the condenser 14 in the unit case 11. Exchange heat with air. As a result, the air in contact with the condenser 14 in the unit case 11 is heated, and conversely, the temperature of the refrigerant is lowered and liquefied. The liquefied refrigerant then passes through the throttle valve 15 and is depressurized, and then flows into the evaporator 16 and vaporizes. Thereby, the evaporator 16 cools the air which contacts the evaporator 16 in the unit case 11. The refrigerant that has lost its heat by cooling the air in contact with the evaporator 16 then returns to the compressor 13.

  As a result, the air that has flowed from the water tank 3 into the air passage through the evaporator 16 and the condenser 14 in the unit case 11 in the ventilation passage 29 by the operation of the blower fan 10 is cooled by the evaporator 16 and dehumidified. And then heated by the condenser 14 to warm air. Then, the warm air is blown into the water tank 3 from the first air supply port 26 and the second air supply port 28 of the water tank 3 through the rear stage (air supply duct 25) of the air passage 29, and is sent into the drum 6. Can be put. Therefore, the ventilation path 29, the blower fan 10, and the condenser 14 of the heat pump 17 function as the hot air supply device 34.

The warm air sent into the drum 6 comes into contact with the clothes in the drum 6 to remove its moisture, and then passes from the exhaust port 23 of the water tank 3 to the front stage (exhaust duct 19) of the ventilation path 29 to the unit case 11. It flows into the air path which passes through the evaporator 16 and the condenser 14 inside.
In this way, air circulates between the air path passing through the evaporator 16 and the condenser 14 in the unit case 11 and the water tank 3 having the drum 6.

  Further, at this time, as shown in FIG. 1, control for rotating the drum 6 at a speed of about 40 to 60 [rpm] and control for rotating the drum 6 at a speed of 80 to 100 [rpm] or more are performed. Among these, the former is control for drying while rotating the drum 6 at a speed at which the clothes in the drum 6 are lifted and dropped as described above, and is temporarily referred to as “stir drying control”. On the other hand, the latter is control for drying while rotating the drum 6 at a speed at which the clothes in the drum 6 are stuck to the inner peripheral surface of the drum 6 by centrifugal force, and is temporarily referred to as “centrifugal force drying control”.

  In the “stir drying control”, warm air is brought into contact with clothes that are repeatedly lifted in the drum 6 and then dropped, and the clothes are dried, mainly close to the first air supply port 26. The clothes positioned at the rear part in the drum 6 and the clothes positioned at the front part in the drum 6 near the second air supply port 28 are simultaneously dried. At this time, it is difficult for the warm air to reach the central part between the rear part and the front part in the drum 6 due to the clothes that are continuously stirred by the rear part and the front part in the drum 6. It turns out.

  On the other hand, in the “centrifugal force drying control”, clothes in the drum 6 are stuck to the inner peripheral surface of the drum 6 by centrifugal force. Inside, that is, a cavity is formed between the central shaft portion in the drum 6 and the cylindrical clothing group, and warm air passes through the cavity, so that not only the rear and front portions in the drum 6 but also the central portion Arrives without being blocked by clothing. In this way, the warm air is sufficiently brought into contact with the clothing located in the center of the drum 6 and the drying proceeds.

  At this time, the exhaust port 23 for discharging the warm air supplied to the inside of the drum 6 to the outside of the water tank 3 is between the first air supply port 26 and the second air supply port 28 of the water tank 3. Therefore, the warm air passing through the central portion of the drum 6 from the air supply ports 26 and 28 can be made smooth, and the clothes located in the central portion of the drum 6 can be dried more efficiently. I can do it well.

  The amount of warm air supplied from the first air supply port 26 of the water tank 3 and the amount of warm air supplied from the second air supply port 28 are either “stir drying control” or “centrifugal force drying control”. The former (the amount of warm air supplied from the first air supply port 26) is made larger than the latter (the amount of warm air supplied from the second air supply port 28).

  The air volume is set by rotating the air volume adjusting damper 32 in the air volume adjusting trap 27 provided at the branch portion of the first air path 25 a and the second air path 25 b in the ventilation path 29 by the geared motor 33. The air volume adjustment trap 27 is changed by changing the opening degree of the opening 27a connected from the first air path 25a to the second air path 25b. The air volume supplied from the first air supply port 26 is In order to increase the amount of air supplied from the second air supply port 28, the opening degree of the opening 27a is decreased, so that the air amount reaching the second air supply port 28 through the second air passage 25b is reduced. The amount of air flowing through the first air passage 25a to the first air supply port 26 is increased.

  More specifically, as shown in FIG. 7, the “centrifugal force drying control” is performed such that the proportion of the execution time increases in the latter half of the first half of the drying process in which the clothes are dried. (In the illustrated example, the period when the drying rate of the clothes is 60 to 70 [%] is the initial drying period, the period when the drying rate of the clothes is 70 to 90 [%] is the middle drying period, and the drying rate of the clothes is 90 to 90%. The time of 100% is set as the late stage of drying, and “stir-drying control” is executed until the middle of the drying stage, and thereafter “centrifugal drying control” is executed by gradually increasing the proportion of execution time. )

In this case, with respect to the execution of “stir drying control” and the execution of “centrifugal force drying control”, for example, as shown in FIG. ] Execution of “centrifugal force drying control” by gradually increasing the total time of “centrifugal force drying control” execution time t ₂ with respect to the total time of “stirring drying control” execution time t ₁ during a unit time such as I try to increase the percentage of time.
After this, the drying process is finished and the standard driving course is finished.

  As described above, in the washing and drying machine having the above-described configuration, the first air supply port 26 for supplying the hot air to the inside of the drum 6 is formed at the rear part of the water tank 3, and the hot air is also supplied to the inside of the drum 6. A second air supply port 28 is formed in the front portion of the water tank 3, and hot air is supplied into the water tank 3 from the first air supply port 26 and the second air supply port 28 simultaneously. Control that rotates the drum 6 at a speed at which the clothes are lifted and then dropped (stir drying control) and control that rotates the clothes at a speed that causes the clothes to stick to the inner peripheral surface of the drum 6 (centrifugal force drying control) I try to dry clothes.

  Thus, the hot air can be supplied into the drum 6 not only from the rear but also from the front, and in addition, the hot air is also supplied to the central portion between the rear and front of the drum 6. As a result, all of the clothes located at the rear, front and center of the drum 6 can be dried evenly. Moreover, since it is possible to avoid excessively drying only the garment located in a part of the drum 6, it is possible to dry the garment without causing damage such as shrinkage. Furthermore, the waste of energy of overdrying can be eliminated.

  In addition, in the washing and drying machine having the above-described configuration, the centrifugal force drying control is executed by increasing the proportion of the execution time in the latter half of the first half of the drying process. In the first half of the garment process, the garment is moist and contracts. Accordingly, even when the clothes are repeatedly lifted and dropped, a gap is formed between the clothes, and the warm air easily passes between the clothes, and the warm air is in good contact with the clothes, so that drying proceeds. Therefore, in the first half of the drying process, the agitation drying control in which the drum 6 is rotated at a speed at which the drum 6 is dropped after being lifted is sufficient.

  On the other hand, in the latter half of the drying process, the clothes are being dried and the clothes are inflated, so that the clothes become clogged, and it is difficult for hot air to pass between the clothes. There is less contact of warm air with the garment at the center between the front part. Therefore, by executing the centrifugal force drying control for rotating the drum at a speed for attaching the garment to the inner peripheral surface of the drum as described above by increasing the ratio of the execution time in the latter half of the first half of the drying process, The clothes can be dried more efficiently by improving the passage of warm air between the clothes in the second half of the operation when the clothes are inflated.

  In addition, particularly in the washing and drying machine having the above-described configuration, supply of warm air from the rear part of the water tank 3 and supply from the front part of the water tank 3 to the inside of the drum 6 are performed in parallel. Since it does not switch according to progress of a drying process like the thing of 2 description, the drying speed with respect to all the clothing can be accelerated, ie, it can prevent taking time until completion | finish of drying.

On the other hand, FIG. 9 shows the second embodiment, the description of the same parts as those of the first embodiment is omitted, and only different parts are described.
In this case, first, a clothing amount detecting means for detecting the amount of clothing is provided. For example, the garment amount detection means includes a time required for acceleration until the rotational speed of the motor 5 increases to a predetermined rotational speed when the control device rotates the drum 6 containing the garment before driving, and thereafter The weight of the garment is detected based on the difference from the time required for deceleration until the rotation of the motor 5 is stopped and the rotation speed is reduced to the predetermined rotation speed. Therefore, the control device detects the garment amount. It functions as a means.

  And a control apparatus changes the ratio of the execution time of the control which rotates the drum 6 with the speed | rate which makes clothing stick | paste on the internal peripheral surface of the drum 6 with the detected quantity of clothing. Specifically, as the detected amount of clothing increases to 1 [kg], 3 [kg], 4 [kg], and 6 [kg], the clothing is removed from the inner periphery of the drum 6 in the latter half of the drying process. The execution time ratio of the centrifugal force drying control for rotating the drum 6 at a speed of sticking to the surface is increased.

  This is based on the fact that the difficulty of drying the garment in the central part between the rear part and the front part in the drum 6 varies depending on the amount of the garment. That is, when the amount of clothing is 1 kg, for example, the amount of clothing that occupies the space in the rear and front of the drum 6 and the central portion therebetween is small, and the drum 6 is rotated at a speed at which the drum 6 is lifted and dropped. Even if the stirring and drying control is repeated, warm air can be brought into contact with the entire garment. Therefore, the necessity of performing centrifugal force drying control for rotating the drum 6 at a speed at which the garment is stuck to the inner peripheral surface of the drum 6 is not necessary. Few.

  On the other hand, as the amount of clothing increases, clogging between the clothing when the clothing progresses and the clothing swells advances, and as described above, it becomes difficult for hot air to pass between the clothing. There is less hot air contact with the garment at the center between the rear and front. Therefore, as the amount of the detected clothing increases, the execution time of the centrifugal force drying control for rotating the drum 6 at a speed at which the clothing is stuck to the inner peripheral surface of the drum 6 in the latter half of the operation for drying the clothing. By increasing the ratio, it is possible to improve the passage of warm air between clothes when the clothes are inflated and dry the clothes more efficiently.

  In addition to this, the agitation and drying control for rotating the drum 6 at a speed at which the clothes are lifted and dropped, and the centrifugal force drying control for rotating the drum 6 at a speed for attaching the clothes to the inner peripheral surface of the drum 6, It is also possible to make the ratio of the air volume of the hot air supplied from the first air supply port 26 and the temperature of the hot air supplied from the second air supply port 28 different from each other.

  Specifically, as described above, in both the agitation drying control and the centrifugal force drying control, the former (the amount of warm air supplied from the first air supply port 26) is changed to the latter (the second air supply port 28). The amount of warm air supplied from the first air supply port 26 is greater than that when executing agitation drying control. It is preferable to further increase the amount. As described above, this change in the air volume can be achieved by rotating the air volume adjusting damper 32 provided at the branch portion between the first air path 25a and the second air path 25b in the ventilation path 29 by the geared motor 33. .

  In particular, in the washing and drying machine having the above-described configuration, the first air supply port 26 is oriented closer to the axial direction of the drum 6 than the second air supply port 28 of the water tank 3, and is blown from the second air supply port 28. The hot air passes through the drum 6 along the axial direction of the drum 6. Therefore, the stirring / drying control is performed on the amount of warm air supplied from the first air supply port 26 at the time of centrifugal force drying control for generating a cavity between the central shaft portion in the drum 6 and the cylindrical clothing group. By increasing the number more than the time, a cavity can be generated more reliably between the central shaft portion in the drum 6 and the tubular garment group, and the center between the rear portion and the front portion in the drum 6 can be obtained. The warm air contact with the clothing at the section can be made more reliable, and the clothing can be dried more efficiently.

  Accordingly, in this case, if the first air supply port 26 of the water tank 3 is configured to be closer to the axial direction of the drum 6 than the second air supply port 28, the warm air supplied from the second air supply port 28. Of the warm air supplied from the first air supply port 26 at the time of stirring and drying control. In short, the hot air supplied from the air supply port oriented close to the axial direction of the drum 6 is sufficient. It is preferable to increase the air volume.

  Further, in this case, the drum 6 is supported in an upwardly inclined shape, and there is a situation in which the clothes being dried are liable to be displaced to the rear part, and the rear part in the drum 6 has a cavity in the central part of the clothes that are liable to be displaced. To increase the amount of warm air supplied from the first air supply port 26 provided at the rear of the water tank 3, the air supply on the side on which the clothes are likely to be displaced is more reliably achieved. It is preferable to increase the amount of warm air supplied from the mouth.

The warm air may be generated not by a heat pump but by an electric heater. In addition, there may be no washing and dehydrating functions.
Further, the supply of hot air from the first air supply port 26 and the supply of hot air from the second air supply port 28 may be switched either in parallel, not in parallel. The switching may be performed not only once but also a plurality of times.

  In addition, although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  In the drawings, 3 is a water tank (outer tank), 5 is a motor (drum driving device), 6 is a drum, 26 is a first air supply port, 28 is a second air supply port, and 34 is a hot air supply device. .

Claims (4)

A drum for housing clothing;
An outer tank containing this drum,
A drum driving device for rotating the drum;
A hot air supply device for supplying hot air to the inside of the drum from the outside of the outer tub,
A first air supply port for supplying the hot air is formed in the rear portion of the outer tub, and a second air supply port for supplying the hot air is formed in the front portion of the outer tub,
The drum is lifted from the clothes while the warm air is supplied by switching between the first air inlet and the second air inlet at the same time or one of them from the first air inlet and the second air inlet. A clothes dryer, wherein the clothes are dried by performing a control of rotating at a speed of dropping and a control of rotating at a speed of attaching the clothes to the inner peripheral surface of the drum.   2. The clothes drying method according to claim 1, wherein the control of rotating the drum at a speed at which the clothes are stuck to the inner peripheral surface of the drum has a higher proportion of execution time in the second half than in the first half of the operation for drying the clothes. Machine.   A clothing amount detecting means for detecting the amount of clothing is provided, and the proportion of execution time of the control for rotating the drum at a speed at which the clothing is stuck to the inner peripheral surface of the drum is changed according to the detected amount. The clothes dryer according to 1 or 2.   Supply from the first air supply port to the inside of the outer tub with the control of rotating the drum at a speed to drop after lifting the clothes and the control of rotating the drum at a speed to attach the clothes to the inner peripheral surface of the drum The clothes dryer according to any one of claims 1 to 3, wherein the ratio of the air volume between the warm air to be supplied and the warm air supplied from the second air supply port is varied.

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