KR100262896B1 - Washing and drying machine - Google Patents

Abstract

The present invention in order to prevent the drying irregularity of the laundry and the wrinkles of the laundry caused by the drying stroke as the laundry is attached to the inner circumferential wall of the rotary tub immediately after the dehydration stroke, the dehydration stroke and drying stroke in turn As for the washing dryer to say,

After the dehydration stroke is finished, the rotation control of the motor 29 is repeated so as to repeat the forward rotation and the reverse rotation every short time, so that the laundry attached to the inner circumferential wall of the rotating tub 5 is rotated. A tangle release stroke that is distributed evenly in the inside is performed once or a plurality of times, and then a drying stroke is started, whereby the entire laundry in the rotating tub 5 can receive the warm air without causing any drying unevenness of the laundry. And it is characterized in that the laundry can be prevented from wrinkles.

Description

Laundry Dryer {WASHING AND DRYING MACHINE}

The present invention relates to a laundry dryer having a preheat drying function for performing a dehydration stroke while sending a warm air to a rotating tank rotating at a high speed at the end of dehydration at the end of washing, and in particular, attached to the inner wall of the rotating tank during the final dehydration. The present invention relates to a laundry dryer for reducing drying irregularities of laundry and reducing wrinkles by carrying out dehydration administration while untangling laundry.

Conventionally, the so-called drum type laundry dryer shown in the cross-sectional view of FIG. 5 is known. The drum type laundry dryer is provided with a rotating tank freely rotatable in the tank 105 supported by the suspension 103 in the outer box 10 and the tank 105 being coaxial with the horizontal axis X of the tank 105. 107, the fan 102 which forms the wind for sending into the said rotating tank 107, and the dehumidifier 109 which performs the dehumidification process with respect to the wind formed by the said fan 102.

In addition, the drum type laundry dryer includes a heater 111 for making the wind dehumidified by the dehumidifier 109 into a warm air, a motor 104 for rotationally driving the rotating tank 107, and the motor 104. A pulley 106 provided at the distal end of the rotary shaft 104a of the rotary shaft 104, a pulley 108 provided on the rotary shaft 107a of the rotary tub 107, a rotary belt 110 fastened to the respective pulleys 106, 108, and And a water supply valve 112 for supplying water to the water tank 105, and a drain valve 114 for draining the washing liquid, the rinsed water, and the like in the water tank 105.

In the case of washing with such a drum type laundry dryer, the user opens and closes the door 115, injects laundry (and laundry agent) into the rotary bath 107, and turns on the washing start key. When the washing start key is operated, a microcomputer (microcomputer) detects this and controls the water supply valve 112 to supply water into the water tank 105. When the water supply is finished, the motor 104 is controlled to rotate at a predetermined rotation speed.

When the motor 104 is driven to rotate, the rotational force is transmitted to the rotating tank 107 through the pulleys 106 and 108 by the rotating belt 110. Accordingly, the rotary tub 107 is driven to rotate in accordance with the rotation of the motor 104, washing the laundry by the flow of water in the rotary tub 107.

The microcomputer then controls the respective units so as to sequentially perform the respective steps of drainage (drainage of the washing liquid), water supply, rinsing, drainage, dehydration, and drying.

Here, such a laundry dryer has a preheat drying function to dehydrate the laundry while sending warm air into the rotary tank 107 when performing the dehydration stroke.

That is, the microcomputer drives the fan 102, the dehumidifier 109, and the heater 111 when the dehydration stroke is performed, and drives the motor 104 at high speed. As a result, wind is formed by the fan 102. The wind is dehumidified by the dehumidifier 109 and at the same time, it is warmed by the heater 111 and is sent into the rotating tank 107 which is rotated at high speed through the ventilation hole 113. The warm air sent into the rotating tank 107 is returned to the fan 102 through the hole 116 and the hot air discharge hole 105a of the rotating tank 107 which are rotationally driven. The warming treatment is carried out, and once again sent to the rotating tank 107 to circulate in the drum laundry dryer.

As a result, the water temperature of the water contained in the laundry is increased, whereby the dehydration effect can be increased through the decrease in the viscosity of the water and the decrease in the surface tension. For this reason, the time required for dehydration administration and the time required for drying administration after dehydration administration can be shortened, respectively.

However, although the conventional laundry dryer can shorten the time required for the dehydration administration and the time required for the drying administration after the dehydration stroke by the preheating function, there is a problem of drying unevenness and wrinkles of the laundry after the dehydration stroke. there was.

That is, when the rotating tub 107 is rotated at a high speed by the dehydration stroke, the laundry enters the hole 116 of the rotating tub 107 and the laundry is attached to the inner circumferential wall of the rotating tub 107. . The inner circumferential wall side of the rotating tub 107 of the laundry is received because the warm air is received as the laundry is attached to the inner circumferential wall of the rotating tub 107 by the centrifugal force due to the rotation of the rotating tub 107. Dehydration administration proceeds as it is located on the inner peripheral wall side. For this reason, the dehydration stroke is terminated in a state where dry laundry is generated between the portion of the laundry on the inner circumferential wall of the rotary tub 107 and the surface portion of the laundry, and this causes the laundry to wrinkle. do.

The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a laundry dryer which can realize good preheating drying without causing uneven drying of laundry and wrinkles of laundry.

1 is a cross-sectional view of a drum type laundry dryer as a first embodiment of a laundry dryer according to the present invention;

Fig. 2 is a time chart for explaining an entanglement release stroke performed in the dehydration stroke of the drum type laundry dryer according to the first embodiment.

3 is a view for explaining a stroke for removing the cloth that the drum type laundry dryer of the second embodiment of the laundry dryer according to the present invention performs immediately before the entanglement stroke;

4 is a time chart for explaining the stepwise rotation control of the rotating tub which the drum type laundry dryer according to the third embodiment of the laundry dryer according to the present invention performs before and after the entanglement release stroke;

Figure 5 is a cross-sectional view of a conventional drum laundry dryer.

* Explanation of symbols for main parts of the drawings

1: Outer box of drum type washing dryer 3: Water tank

5: rotating tank 5a: hole of rotating tank

7: vent hole 9: suspension

11: cleaning heater 13: microcomputer

15: water supply valve 17: drainage motor

19: drain pump 21: drain pipe

23: rotating shaft 25: opening and closing door

27: bearing 29: drive motor

31, 33: pulley 35: rotating belt

41: Fan 43: Dehumidifier

45: hot air heater 49: hot air injection hole

51: hot air discharge hole 53: temperature sensor

55: water temperature detection sensor 57: cloth amount detection sensor

59: operation keys

Washing dryer according to the present invention is carried out from the washing stroke of the laundry in the rotating tank to the dehydration stroke and drying stroke, and at the same time, while spinning the rotating tank at high speed while sending the warm air in the rotating tank during the dehydration stroke to perform the dehydration of the laundry To solve the above problems in the laundry dryer characterized in that the following means were installed.

That is, the laundry dryer according to the present invention is provided with a control means for rotationally controlling the rotary tub so as to perform a stroke for tangling the laundry in the rotary tub at least once during the dehydration stroke in order to solve the above problems. .

The tangling stroke is such that the control means stops the rotation of the rotating tank once during the dehydration stroke, and rotates the rotating tank so as to repeat the forward and reverse rotation every short time, thereby rotating the laundry attached to the inner circumferential wall of the rotating tank. It is stroke to distribute evenly in the inside. By inserting such an entanglement release stroke and performing a dehydration stroke, a dehydration stroke can be performed without generating dry unevenness by allowing the whole air to receive warm air without falling into the entire laundry being dehydrated. For this reason, wrinkles can be prevented from occurring in the said laundry.

Next, the laundry dryer according to the present invention, as the control means, controls the rotation of the rotary tub so as to drop the laundry attached to the inner circumferential wall of the rotary tub by the dehydration stroke immediately before the entanglement stroke. Install).

Specifically, as the stroke for removing the cloth, for example, the rotational tank is rotated at a high speed to perform rotation control for applying a rapid brake. In addition, when the laundry dryer is applied to a laundry dryer that rotates the rotary tub in a vertical direction with respect to the ground to perform washing, etc., the rotary tub is rotated at an ultra low speed or, for example, 90 degrees, 180 degrees, 270 degrees, or the like. Similarly, rotation control is repeated to repeat rotation and stop at predetermined angles.

In the case of performing rotation control to rotate the rotating tub at high speed and applying rapid brake, the laundry attached to the inner circumferential wall of the rotating tub is peeled off by the inertia force. In addition, the laundry dryer is applied to a laundry dryer for rotating the rotary bath in the vertical direction with respect to the ground to perform the washing or the like to perform the rotation control to rotate the rotary bath at a very low speed or the rotary bath 90 degrees, In the case of performing rotation control that rotates and stops at predetermined angles such as 180 degrees and 270 degrees, the laundry attached to the inner circumferential wall of the rotating tub is lifted from the ground to 90 degrees, 180 degrees and 270 degrees, Peeled off.

By performing the above entanglement stroke after such a stripping operation, the time for the subsequent entanglement release stroke can be shortened. Further, in the entanglement release stroke after the step of removing the cloth, the laundry in the rotating tank can also be distributed evenly, and a better dehydration state can be realized.

Next, when the laundry dryer according to the present invention performs the entanglement release stroke a plurality of times as the control means, the rotating tank is gradually rotated so that the rotational speed of the rotating vessel is approached to the normal rotational speed every time the entanglement release stroke is performed. Install the rotation control.

This is an invention made in view of the fact that the number of rotations of the laundry attached to the inner circumferential wall of the rotating tub is changed before and after the entanglement release stroke. That is, the water content of the laundry in the said rotating tank decreases by the rotation control of the rotating tank before the entanglement stroke. And since the said water content decreases, in the rotation control of the rotating tank after the said entanglement release stroke, it becomes difficult to attach the laundry to the inner peripheral wall of the rotating tank.

For this reason, the said control means performs rotation control which raises the rotation speed of a rotating tank by inserting each entangle | release entanglement stroke in the case of performing multiple times of entanglement release stroke.

As a result, the laundry can be more favorably released by the plural entanglement release strokes.

Next, the laundry dryer according to the present invention controls the heater for forming the warm air to be sent to the rotating tank until the rotation speed of the rotating tank as the control means, the rotation speed of the rotating tank, When the heater is turned on.

When shifting from the entanglement stroke to high speed rotation during the dehydration stroke, it is necessary to increase the rotational speed of the rotating tub, and to raise the rotational speed to the normal rotational speed than in the case of rotationally driving the rotating tub at the normal rotational speed. It requires a large value of current. Since the current capacity of the power supply is about 15 amperes in the general home, there is a limitation, and the maximum current value in the entire stroke of the laundry dryer is also preferably less than the current capacity of the general home. On the other hand, limiting the input specification of the heater (using a low power consumption heater) is not preferable because the time required to dry the laundry becomes long.

For this reason, the control means turns off the heater until the rotational speed of the rotating tub reaches the normal rotational speed, and turns on the heater when the rotational speed of the rotating tub reaches the normal rotational speed. As a result, the maximum current value of the laundry dryer can be made equal to or less than the current capacity of a general household without prolonging the time required to dry the laundry.

Hereinafter, a preferred embodiment of the laundry dryer according to the present invention will be described in detail with reference to the drawings. First, the laundry dryer according to the present invention can be applied to a so-called drum type laundry dryer.

The drum type laundry dryer according to the first embodiment of the present invention, as shown in the cross-sectional view of FIG. 1, has a water tank 3 supported by a suspension line 9 in the outer box 1, and a horizontal axis of the water tank 3 ( It has the rotating tank 5 rotatably installed in the said tank 3 so that it may become coaxial with X). On the rear side of the rotating tub 5, a rotating shaft 23 is rotatably supported by a bearing 27 along the horizontal axis X, and a pulley 31 is provided at the tip of the rotating shaft 23. have.

In the peripheral portion of the rotary shaft 23 of the rotary tub 5 is provided with a plurality of hot air injection holes 49 for sending warm air formed in the rotary tub 5 during the dehydration and dry stroke of the laundry. Moreover, many hole part 5a is provided in the circumferential wall. The rotary tub 5 is configured to allow the washing liquid and the warm air to enter and exit the water through the hole 5a, and to drain when dewatering.

The water supply valve 15 is provided in the upper surface side of the said water tank 3, and water is supplied to the said water tank 3 via this water supply valve 15. FIG. In addition, the inside of the bottom surface of the water tank 3, the washing heater 11 for heating the washing liquid and rinsing water, and the water temperature detection sensor for detecting the temperature of the washing liquid and rinse water heated by the washing heater 11 55 is provided. Further, a drain pump 19 for draining the washing liquid and the rinsed water, etc. in the tank 3, and a drain motor 17 for driving the drain pump 19 are provided on the outer side of the bottom surface of the tank 3. And a drain pipe 21 for discharging the drain water from the drain pump 19 to the outside of the washing dryer.

In addition, the drum type laundry dryer has a drive motor 29 for rotationally driving the rotary tank 5 of the water tank 3. A pulley 33 is provided at the tip end of the rotary shaft 29a of the drive motor 29, and the rotary belt 35 is hooked over the pulley 33 and the pulley 31 provided on the rotary shaft 23. The rotational force of the drive motor 29 is transmitted to the rotating tank 5.

In addition, the drum-type laundry dryer is a motor 42 for rotationally driving the fan 41 for forming wind at the time of dehydration and drying, and a dehumidifier for dehumidifying the wind formed by the fan 41 ( 43, a warm air heater 45 for making the wind dehumidified by the dehumidifier 43 into a warm air, and wind from the fan 41 to be supplied to the warm air heater 45 through the dehumidifier 43. The ventilation hole 7 which forms the path which passes through this, and the temperature sensor 53 which detects the temperature of the warm air formed by the said warm air heater 45 are provided.

In addition, the drum-type laundry dryer has an opening and closing door 25 for entering and leaving the laundry in the rotary tank (5). Between the opening / closing door 25 and the rotary tub 5, the warm air sent into the rotary tub 5 via the hot air injection hole 49 is returned to the fan 41 side, and the inside of the tank 3 is closed. Hot air discharge holes 51 are provided for circulating.

In such a drum type washing machine, the microcomputer (microcomputer) 13 controls each of the above sections so that a user performs a designated stroke by operating an operation key 59 provided on the operation panel. Specifically, when the start of washing is designated by the key operation of the operation key 59, the microcomputer 13 detects the amount of cloth, water supply, washing, draining, short time dehydration, water supply, rinsing, draining, short time dehydration, water supply, Each part is controlled so that each process of rinsing, drainage, final dewatering, and drying may be performed in order.

That is, when the start of washing is designated, the microcomputer 13 rotationally drives the drive motor 29 before supplying water, and the amount of current required until the predetermined number of revolutions is applied to the detection output from the cloth detection sensor 57. Based on the detected amount of current, the amount of cloth for laundry put into the rotating tank 5 is detected. Then, the water supply amount, washing time, dehydration time and drying time are determined based on the detected amount of cloth. In addition, such water supply amount, washing time, etc. are determined with reference to the ROM table into which the predetermined quantity, time, etc. were input according to the quantity of cloth.

Next, the microcomputer 13 controls the opening of the water supply valve 15 to supply water to the water tank 3, and further controls the cleaning heater 11 to be turned on. The microcomputer 13 detects the water supply amount according to the closing time of the water supply valve 15 and detects the water temperature in the water tank 3 based on the detection output from the water temperature sensor 55. When the amount of water supplied corresponds to the amount of cloth, the water supply valve is closed-controlled, the cleaning heater 11 is turned off, and the drive motor 29 is rotationally driven. Thereby, the rotational force of the said drive motor 29 is transmitted to the rotating tank 5 via the pulley 33 and the pulley 31 by the rotating belt 35, and washing process starts.

Next, the microcomputer 13 executes the drainage stroke when the washing stroke is performed for a predetermined time, stops the energization to the drive motor 29, and drives the drainage motor 17 to rotate. As a result, the drain pump 19 is driven following the rotation of the drain motor 17 so that the laundry in the water tank 3 is drained through the drain pipe 21.

Next, when the drainage of the laundry in the water tank 3 is finished, the microcomputer 13 drives the drive motor 29 at high speed while driving the drain pump 19 to perform a dehydration stroke in a short time. . As a result, the laundry contained in the laundry in the rotary tub 5 is discharged to the drain pump 19 side through the hole 5a of the rotary tub 5 to shorten the time required for the subsequent rinsing stroke. Can be.

Next, the microcomputer 13 stops the energization of the drain motor 17 and the driving motor 29, respectively, and again closes and controls the water supply valve 15 to supply water to the water tank 3. In addition, the washing heater 11 may be turned on to control the temperature of the rinsing water during this water supply.

Next, when the water supply is made in the water tank 3 in a predetermined amount, the microcomputer 13 controls the closing of the water supply valve 15, and rotationally drives the driving motor 29 to rinse the laundry. . Thereby, the laundry in the said rotating tank 5 is rinsed by the water flow which arises by rotation of the said rotating tank 5. As described above, in the laundry dryer, the dehydration stroke is performed for a short time before the rinsing step, so that the rinsing step can be completed in a short time.

Next, when the said rinse stroke is complete | finished, the microcomputer 13 stops supplying electricity to the drive motor 29, and drives the drain motor 17 rotationally. As a result, the rinsed water in the water tank 3 is drained through the drainage pipe 21.

Next, when the drainage of the laundry in the water tank 3 is completed, the microcomputer 13 performs the final dehydration stroke, and drives the drive motor 29 at high speed while driving the drain pump 19. In addition, the motor 42, the dehumidifier 43, and the warm air heater 45 for rotationally driving the fan 41 are driven on.

As a result, the fan 42 is driven to rotate to form wind. The wind is dehumidified by the dehumidifier 43 and supplied to the warm air heater 45 through the ventilation hole 7. Then, the hot air is heated by the hot air heater 45 and is sent into the rotary bath 5 through the hot air injection hole 49 of the rotary bath 5.

The warm air sent into this rotating tank 5 is cut by the laundry in the rotating tank driven by the high speed rotation, and is returned to the fan 41 through the hot air discharge hole 51 or the like. Thereafter, as described above, the dehumidification treatment and the warming treatment are carried out and once again sent to the rotary tank 5 to circulate the inside of the laundry dryer.

In this way, by sending warm air into the rotary tank 5 while dehydrating, the water temperature of the water contained in the laundry is increased, thereby increasing the dehydration effect through the decrease in the viscosity and the surface tension of the water. . For this reason, the laundry in the said rotating tank 5 can be dried to some extent before a subsequent drying process, and the drying administration time can be shortened.

Here, the laundry dryer executes the final dehydration stroke while sending warm air in the rotary tank 5 during the final dehydration stroke, and stops rotation once during the final dehydration stroke, and the laundry in the rotary tank 5 The Tangle Unlocking Administration is executed, and after this Tangle Unfolding Administration, the final dehydration administration is executed.

That is, the microcomputer 13 stops supplying power to the drive motor 29 when a predetermined time has elapsed after starting the final dehydration stroke. After the energization stops, an entanglement release step of rotating the drive motor 29 is performed so that the rotating tank 5 repeatedly performs the forward rotation and the reverse rotation every short time. The laundry dryer is configured to perform such an entanglement stroke three times during the final dehydration stroke, as shown in the low level period (the entanglement release stroke period) in Figs.

In the final dehydration stroke, the rotating tub 5 is rotated at a high speed, so that laundry is attached to the inner circumferential wall of the rotating tub 5, but once the dewatering stroke is stopped, the tangling stroke is performed. By doing so, the laundry attached to the inner circumferential wall of the rotating tub 5 can be dropped into the rotating tub 5 to be released evenly.

For this reason, when a dehydration stroke is started once again, it is possible to receive warm air all over the laundry under dehydration, and the dehydration stroke can be terminated so that dry unevenness does not occur. This can prevent wrinkles in the laundry.

Next, when the final dehydration stroke is completed, the microcomputer 13 drives the driving motor 29 at a medium speed rotation, and drives the fan 41 to rotate to send warm air into the rotating tank 5. Implement the drying administration. As described above, since the laundry dryer is configured to release the laundry by the entanglement release stroke in the final dehydration stroke and send the warm air to the rotary tub 5 to perform dehydration, the laundry dryer performs this drying stroke while the laundry is somewhat dry. The time required for the drying operation can be shortened. And when this drying administration is complete | finished, all the washing administrations will be complete | finished.

Next, the drum type laundry dryer according to the second embodiment of the present invention will be described. The drum type laundry dryer according to the second embodiment is a stroke for removing the cloth that is the stroke that the microcomputer (13) drops the laundry attached to the inner circumference wall of the rotating tub (5) by the dehydration stroke immediately before the entanglement release stroke. It is to be carried out.

Specifically, when the micom 13 is time to execute the entanglement release stroke, as shown in FIG. 3, the rotating tub 5 is rotated at an extremely low speed before performing the entanglement stroke stroke. For example, the driving motor 29 is rotated to stop at a position of 90 degrees, a position of 180 degrees, or a position of 270 degrees.

Thereby, the laundry attached to the inner circumference wall of the rotating tub 5 by the high speed rotation in the dehydration stroke is lifted to the position of 90 degrees, 180 degrees or 270 degrees from the ground, so that the inner circumference by gravity It may be removed from the wall and dropped into the rotating tub 5.

Next, the microcomputer 13 controls each unit so as to perform the above entanglement stroke after performing such a stripping operation. As a result, the entanglement release stroke can be performed on the laundry separated from the inner circumferential wall of the rotary tub 5, so that the laundry in the rotary tub 5 can be put evenly and loosened, thereby providing a better dehydration state. Can be realized. In addition, the time required for the entanglement release stroke can be shortened.

In addition, in the drum type washing machine according to the second embodiment, the rotary tub 5 is rotated at each position of, for example, 90 degrees, 180 degrees, or 270 degrees in a stroke for removing the fabric. Any angle may be used as long as the laundry attached to the inner circumferential wall of the tank 5 can be removed and dropped, and it may adjust to arbitrary angles.

In addition, in the step of removing the cloth, a sudden brake may be applied to the rotating tank 5 rotating at a high speed when the tangle release step is executed. In this case, since the rapid brake can be applied to the rotating tank 5 which rotates at high speed, the laundry attached to the inner circumferential wall of the rotating tank 5 is separated by the inertia force. For this reason, the said entanglement | release release process can be performed with respect to this separated laundry, and the above effects can be acquired.

Next, a drum type laundry dryer according to a third embodiment of the present invention will be described. The drum type laundry dryer according to the third embodiment has a rotational speed at which the laundry is attached to the inner circumferential wall of the rotating tub (5). Each time the stroke is carried out, the drive motor 29 is rotated so that the rotational speed of the rotating tank 5 approaches the normal rotational speed.

That is, the water content of the laundry in the said rotating tank 5 decreases by the dehydration stroke of the rotating tank 5 before this entanglement removal stroke. As the water content decreases, the laundry becomes difficult to attach to the inner circumferential wall of the rotating tub 5 in the dewatering stroke of the rotating tub 5 after the entanglement release stroke.

Thus, when the microcomputer 13 performs the entanglement stroke a plurality of times, as shown in Fig. 4, the microcomputer 13 inserts each of the entanglement strokes so that the first, second, third, and normal rotations are performed. The drive motor 29 is rotationally driven to increase the number of revolutions of the rotating tub 5 in a stepwise manner. As a result, the laundry can be better unwound by the plural times of entanglement release steps.

Next, a drum type laundry dryer according to a fourth embodiment of the present invention will be described. The drum type laundry dryer according to the fourth embodiment sends warm air to the rotating tank (5) between the microcomputer (13) until the rotation speed of the rotating tank (5) becomes the normal rotation speed in the final dehydration stroke. The hot air heater 45 for forming is controlled to be off, and the hot air heater 45 is turned on when the rotation speed of the rotating tub 5 reaches a normal speed.

It is necessary to raise the rotation speed of the rotating tank 5 when shifting to the high speed rotation at the time of dehydration stroke in the said entanglement release stroke, and to raise the rotation speed to normal rotation speed, the rotation tank 5 is rotated normally. A larger value of current is required than in the case of rotational driving with a number. In general households, since the current capacity of the power supply is about 15 amps, there is a limit, and it is preferable to set the current capacity of the general household to be less than or equal to the current capacity of the general household even at the maximum current value in all the strokes of the washing dryer. It is desirable.)

On the other hand, limiting the input state of the warm air heater 45 (using a low power consumption heater) is not preferable because the time required to dry the laundry becomes long.

For this reason, the microcomputer 13 keeps the hot air heater 45 off until the rotation speed of the rotation tank 5 becomes the normal rotation speed, and when the rotation speed of the rotation tank 5 reaches the normal rotation speed, The warm air heater 45 is controlled on. As a result, the maximum current value of the laundry dryer can be suppressed to the current capacity or less of a general household, without prolonging the time required for the drying operation.

Incidentally, in the description of each of the above embodiments, the laundry dryer according to the present invention is applied to the drum type laundry dryer, but this may be applied to the laundry dryer in which the rotating tank rotates in the horizontal direction with respect to the ground.

In addition, description of each said embodiment is an example of the present invention to the last, It is a matter of course that various changes are possible according to a design etc. as long as it does not deviate from the technical idea which concerns on this invention other than the above-mentioned.

The laundry dryer according to the present invention is to at least one time during the dehydration stroke to perform dehydration while sending a warm air to the rotating tank, thereby releasing the tangles of the laundry in the rotating tank, and then performing the dehydration stroke. Dehydration can be carried out while receiving warm air, which can prevent dry unevenness and wrinkles in the laundry.

Claims (3)

In the laundry dryer for washing the laundry in the rotating tank to the dehydration stroke and drying stroke in sequence, and during the dehydration stroke to rotate the rotary tank at high speed while sending the warm air in the rotating tank to dehydrate the laundry. , During the dehydration stroke, the rotating tub is rotated at a very low speed to perform a peeling stroke to drop the laundry attached to the inner circumferential wall of the rotating tub, and after this peeling stroke, the rotating and the reverse rotation of the rotating tub are repeated every short time. And a control means for controlling the rotation of the rotating tub so as to perform a tangling administration for releasing the tangling. The method of claim 1, And the control means rotates the rotating tub such that the rotational speed of the rotating tub gradually approaches the normal rotational speed each time the entanglement release stroke is performed a plurality of times. The method of claim 1, The control means controls off the heater for forming the warm air sent to the rotating tank until the rotation speed of the rotating tank reaches the normal rotation speed, and controls the heater on when the rotation speed of the rotating tank reaches the normal rotation speed. Laundry dryer.

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