JP2010136743A - Drum washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum washing machine capable of efficiently performing rinsing and shortening the washing time. <P>SOLUTION: The drum washing machine includes a water supply means 11 for supplying water into a water receiving tub 3, and a control means 22 for controlling the respective steps of washing, rinsing and dewatering. The control means executes a rinsing step for two or more times, and the water amount of the rinsing water to be supplied in the rinsing step of the first time is made larger than the water amount to be supplied in the rinsing step of the second time. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a drum-type washing machine in which laundry is put into a rotating drum, and washing is performed by sequentially controlling each process such as washing, rinsing and dehydration.

  Conventionally, this type of drum-type washing machine is configured as shown in FIGS. 6 and 7 (see, for example, Patent Document 1). Hereinafter, the configuration will be described. As shown in FIGS. 6 and 7, the rotary drum 1 is provided with a large number of water passage holes 2 on the entire outer periphery thereof and is rotatably disposed in the water receiving tank 3. A rotation shaft (rotation center shaft) 4 is provided in a substantially horizontal direction at the rotation center of the rotary drum 1, and a motor 5 is connected to the rotation shaft 4 to rotate the rotary drum 1. Several protruding plates 6 are provided on the inner wall surface of the rotating drum 1.

  The water receiving tank 3 is suspended from the washing machine body 7 by a spring body 8 so as to be swingable. One end of the drain hose 9 is connected to the lower part of the water receiving tank 3 and the other end of the hose 9 is connected to the drain pump 10. Thus, the washing water in the water receiving tank 3 is drained. The water supply valve 11 supplies water into the water receiving tank 3. The water level detection means 12 detects the water level in the water receiving tank 3.

  The control device 13 has a control means 14 composed of a microcomputer, controls the operation of the motor 5, the drainage pump 10, the water supply valve 11 and the like via the power switching means 15, and performs a series of washing, rinsing, dehydration and the like. The process is sequentially controlled. The input setting means 16 sets a driving course or the like, and the control means 14 inputs information from the input setting means 16 and displays a display means 17 based on the information to notify the user. The storage means 18 stores data necessary for control by the control means 14. In addition, 19 is a commercial power source and 20 is a power switch.

  The operation in the above configuration will be described. When the laundry and detergent are put into the rotary drum 1, the power switch 20 is turned on, the start button (not shown) is pressed, and the washing process is started, the water supply valve 11 operates. When water is supplied into the water receiving tank 3 and a predetermined water level N1 is detected by the water level detecting means 12, the motor 5 is driven. Further, when a predetermined water level N2 (equal to or higher than N1) is detected, water supply is stopped.

  In the washing process, since the laundry contains water, the revolving drum 1 is normally rotated, stopped, reversed, and stopped at a predetermined rotation speed and a predetermined time by the motor 5 while supplying water. The laundry is caught by the protruding plate 6, lifted and dropped onto the water surface. By this operation, the detergent is gradually dissolved to become washing water, which acts on the dirt of the laundry. When the washing process is completed, the drainage pump 10 is operated to drain the washing water in the water receiving tub 3.

  In the rinsing process, first, the motor 5 is continuously rotated at a predetermined rotation speed and a predetermined time, and the rotation speed is increased at a high speed in a state where the laundry in the rotation drum 1 is attached to the inner wall of the rotation drum 1. Dehydration is performed by removing water in the laundry by centrifugal force.

Next, as in the washing process, while the replenishing water is used, the rotating drum 1 is driven to rotate forward, stop, reverse, and stop at a predetermined number of rotations and a predetermined time by the motor 5, and the laundry in the rotating drum 1 is a protruding plate. 6 is caught, lifted and dropped onto the water surface. By this operation, the rinsing water is absorbed and discharged by the laundry, and the detergent liquid in the laundry is diluted. When the rinsing process is completed, the drain pump 10 is operated to drain the rinse water in the water receiving tank 3.
JP 10-216390 A

  However, in the above-described conventional configuration, in the rinsing process, the rinsing performance is provided by applying mechanical force to the laundry in the rotating drum 1 by including forward rinsing water in the normal rotation, stopping, reversing, and stopping driving of the rotating drum 1. Secured. For this reason, in a drum-type washing machine with a small amount of water supply, it takes time until the rinse water is evenly applied to the laundry, resulting in rinsing unevenness, a decrease in rinsing force, and a longer time required for rinsing. was there.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and aims to improve the efficiency of rinsing and shorten the washing time.

  In order to solve the above-described conventional problems, the drum type washing machine of the present invention executes the rinsing process a plurality of times, and the amount of rinsing water supplied in the first rinsing process is the amount of water supplied in the second rinsing process. More.

  As a result, the laundry can be surely passed through the rinsing water in the rotating drum, and detergent components such as surfactant remaining in the laundry immediately after the washing step are efficiently discharged in the first rinsing step. Thus, the rinsing effect can be enhanced, the rinsing can be made efficient and the washing time can be shortened.

  The drum type washing machine of the present invention can increase the rinsing effect of the laundry and shorten the washing time.

  A first aspect of the present invention relates to a rotating drum rotatably disposed in a water receiving tank, a motor for driving the rotating drum, water supply means for supplying water to the water receiving tank, and washing water in the water receiving tank. And a control means for controlling each of the steps of washing, rinsing and dewatering by controlling the driving of the motor, and the control means executes the rinsing process a plurality of times and performs the first rinsing process. The amount of rinsing water supplied in step 2 is larger than the amount of water supplied in the second rinsing step, so that the laundry can be surely passed through the rinsing water in the rotating drum. A detergent component such as a surfactant remaining in the product can be efficiently discharged in the first rinsing step, thereby enhancing the rinsing effect. Moreover, when a softening agent is used in the rinse process after the 2nd time, a softening agent can be made to act effectively with respect to laundry with the rinse water with few detergent components.

  According to the second aspect of the invention, in particular, the control means of the first aspect of the invention causes the rotational speed of the rotating drum in the first rinsing process to be higher than the rotational speed of the second rinsing process, so that The laundry can be passed through the rinsing water accumulated in a large amount at a high speed, and the absorption and discharge of the rinsing water into the laundry is accelerated, so that the detergent component can be efficiently discharged and the rinsing effect can be enhanced.

  According to a third aspect of the present invention, in particular, the control means according to the first or second aspect of the present invention is configured to increase the number of rotations of the rotating drum after a predetermined time has elapsed since the start of water supply in the rinsing process. The contact efficiency with the rinsing water in the rotating drum can be increased, and the rinsing effect can be enhanced.

In the fourth aspect of the invention, in particular, the control means of the third aspect of the invention sets the rinsing time at the rotational speed increased after the first predetermined time in the rinsing step to be longer than the rinsing time at the rotational speed before the increase. Thus, the contact time between the laundry and the rinsing water can be increased, and the rinsing effect can be enhanced.

  In the fifth aspect of the invention, in particular, the control means of any one of the first to fourth aspects of the invention increases from the state in which the laundry is stuck to the inner wall of the rotating drum to the dehydration speed at the transition from the rinsing process to the dehydration process. By doing so, the balance control operation after the rinsing process becomes unnecessary, and the transition to the dehydration process can be performed quickly.

  In the sixth aspect of the invention, in particular, the control means of any one of the first to fifth aspects is such that the laundry is stuck to the inner wall of the rotating drum during the transition from the intermediate dehydration step before the rinsing step to the rinsing step. By performing the rinsing process, the laundry can be shifted to the rinsing process in a balanced state, and each process can be executed sequentially while maintaining the balanced state in the first dehydration process. The operation time can be shortened by eliminating the balance control operation.

  In the seventh aspect of the invention, in particular, the rotating shaft of the rotating drum of any one of the first to sixth aspects is inclined forward so that the contact with the laundry can be improved with a small amount of rinse water. And the rinsing effect can be enhanced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a sectional view of a drum-type washing machine according to a first embodiment of the present invention, FIG. 2 is a block circuit diagram thereof, and FIG. 3 is a time chart showing the operation. In addition, the thing of the same structure as a prior art example attaches | subjects the same code | symbol, and the description uses the thing of a prior art example.

  In FIG. 1 to FIG. 3, the control device 21 has a control means 22 constituted by a microcomputer, and via a power switching means 15, a motor 5, a drainage pump (drainage means) 10, a water supply valve (water supply means) 11, etc. The series of processes such as washing, rinsing and dehydration are sequentially controlled. Reference numeral 23 denotes a rotational speed detection means for detecting the rotational speed of the rotary drum 1, and information of the rotational speed detection means 23 is sent to the control means 22, and the control means 22 passes through the power switching means 15 to determine the rotational drum 1. Control the number of revolutions. The rotating drum 1 has a rotating shaft 4 that is inclined forwardly from the horizontal direction.

  In the washing process, the control means 22 operates the water supply valve 11 to supply washing water into the water receiving tub 3 to wet the laundry in the rotating drum 1 and dissolve the detergent. Further, the control means 22 controls the motor 5 and causes the motor 5 to drive the rotating drum 1 in the normal rotation, stop, inversion, and stop at a predetermined rotation speed and a predetermined time. As a result, the laundry in the rotating drum 1 is caught by the projection plate 6 and is lifted and dropped onto the water surface where the detergent is dissolved, and the washing is performed by the penetration and discharge of the detergent into the laundry. Remove dirt.

  When the washing process is completed, the control means 22 operates the drain pump 10 to drain the washing water in the water receiving tank 3. Thereafter, the control means 22 sends a signal to the motor 5 to start a balance control operation for the laundry in the rotating drum 1 necessary for dehydration. This balance control operation is performed using a general vibration detection sensor (not shown) or the like in order to reduce vibration when the rotating drum 1 is rotated at high speed. After the balance control operation is completed, the number of rotations of the motor 5 is gradually increased to control it at a high speed (for example, 1000 r / min) to dehydrate the rinse water from the laundry.

  At this time, in the course set at the start of washing, when the rinsing process is set a plurality of times, the control device 21 supplies the water amount set in each rinsing process. For example, in the first rinsing step (B), the water amount is 25 L and the water level is N2, and in the second rinsing step (D), the water amount is 15 L and the water level is N3, and the water is supplied in the first rinsing step (B). The amount of rinsing water is set to be larger than the amount of water supplied in the second rinsing step (D).

  In the intermediate dehydration step (A) after the washing step and the intermediate dehydration step (C) after the first rinsing step (B), the rotation number of the rotating drum 1 is a predetermined value at a peak value (for example, 1000 r / min). When T1 and T2 rotate, the control means 22 controls the number of rotations of the motor 5, and gradually decreases the number of rotations of the rotating drum 1 to control it at a low speed. For example, it is reduced to 150 r / min in the intermediate dehydration step (A) before the first rinsing step (B) and 120 r / min in the intermediate dehydration step (C) before the second rinsing step (D).

  The laundry in the rotating drum 1 rotating at a low speed at the above-described rotational speed rotates while maintaining the state of sticking to the inner wall of the rotating drum 1 in the intermediate dewatering step. The control means 22 opens the water supply valve 11 and starts supplying rinse water to the water receiving tank 3. In the first rinsing step (B), when the water level N2 is detected by the water level detecting means 12, the water supply valve 11 is closed to stop the water supply. In the second rinsing step (D), the first rinsing step (B) When a smaller water level N3 is detected, the water supply is stopped. The driving of the drainage pump 10 is stopped at the start of the supply of the rinse water, and the supplied rinse water is stored without waste. The first rinsing step (B) is executed at each rotation speed for a predetermined time t2, and the second rinsing step (D) is executed for a predetermined time t4.

  The dehydration step after the second rinse step (D) is the final dehydration step (E) when the number of times of rinsing is two. In the final dewatering step (E), when the rotational speed of the rotating drum 1 rotates at a predetermined peak value for a predetermined time T3 (for example, 3 minutes), the control means 22 controls the rotational speed of the motor 5 to Stop the rotation and wash the washing process → intermediate dehydration process (A) → first rinsing process (B) → intermediate dehydration process (C) → second rinsing process (D) → final dehydration process (E) Complete.

  As described above, according to the present embodiment, when the rinsing step is executed a plurality of times, the amount of rinsing water supplied in the first rinsing step (B) is changed to the amount of water supplied in the second rinsing step (D). By making more, the laundry can be surely passed through the rinsing water in the rotary drum 1, and detergent components such as surfactant remaining in the laundry immediately after the washing step are rinsed for the first time (B). With this, the rinsing effect can be enhanced.

  Further, since the number of rotations of the rotating drum 1 in the first rinsing step (B) is set higher than the number of rotations in the second rinsing step (D), the rinsing water accumulated in the lower part in the rotating drum 1 is increased. The laundry can be passed at a high speed, the absorption and discharge of rinse water into the laundry is accelerated, and the detergent component can be efficiently discharged in the first rinse step (B) to enhance the rinse effect. it can.

  In addition, the rotating drum 1 does not stop until the laundry is finished in the intermediate dehydration step (A) after the washing step to the final dehydration step (E), and the balance control performed in the first dehydration step after the washing step is performed. Since each process can be executed while maintaining the state where the laundry is firmly attached to the rotating drum 1, there is no need to perform a balance control operation every intermediate dehydration process, and the washing time can be shortened. .

Further, at the time of transition from the rinsing process to the dewatering process, the laundry is raised from the state where the laundry sticks to the inner wall of the rotating drum 1 to the dewatering rotation speed, and at the time of transition from the intermediate dewatering process before the rinsing process to the rinsing process. Since the rinsing process is executed from the state where the laundry is stuck to the inner wall, the balance control operation between the processes can be eliminated and the operation time can be shortened.

  Note that water is supplied into the water receiving tub 3 into the rotating drum 1 and supplied to the laundry rotating while being stuck inside the rotating drum 1, and the water receiving tub 3 from outside the rotating drum 1. A method of supplying water to the bottom of the inside is conceivable. In the latter case, the water level of the rinsing water in the water receiving tub 3 gradually rises and can be brought into contact with the laundry in the rotating drum 1 in a well-balanced manner. The laundry can be prevented from collapsing.

(Embodiment 2)
FIG. 4 is a time chart showing the operation of the drum type washing machine in the second embodiment of the present invention. In addition, the thing of the same structure as Embodiment 1 attaches | subjects the same code | symbol, and uses the thing of Embodiment 1 for the description.

  In FIG. 4, in the intermediate dehydration step (A) after the washing step and the intermediate dehydration step (C) after the first rinsing step (B), the rotational speed of the rotating drum 1 is a peak value (for example, 1000 r / min). When the motor rotates for a predetermined time T1, T2, the control means 22 controls the rotational speed of the motor 5 and gradually decreases the rotational speed of the rotating drum 1 to control it at a low speed (for example, 80 r / min). Here, the closed water supply valve 11 is opened to start water supply.

  In the first rinsing step (B), after a predetermined time t1 (for example, 2 minutes) has elapsed since the start of water supply, the rotary drum 1 is raised to a predetermined number of rotations (for example, 150 r / min), and the second time In the rinsing step (D), the rotating drum 1 is raised to a predetermined rotational speed (for example, 140 r / min) after a predetermined time t3 (for example, 2 minutes) has elapsed since the start of water supply.

  That is, the number of rotations after rising is set so that the first rinsing step (B) is higher than the second rinsing step (D). This is because the amount of water supplied in the first rinsing step (B) is larger than the amount of water supplied in the second rinsing step (D), and the rotating drum 1 is raised according to the amount of water supplied. The rotation speed is different. The number of rotations to be raised is such that the rinse water enters the rotating drum 1 rotating at a predetermined number of rotations, and the laundry stuck to the inner wall of the rotating drum 1 can pass the rinsing water accumulated at the bottom of the rotating drum 1. When the speed is increased, the amount of water in the rotating drum 1 is reduced by centrifugal force. Therefore, a predetermined water level that allows the laundry attached to the inner wall of the rotating drum 1 to pass through is maintained in the rotating drum 1. The optimum value is set according to the operating conditions.

  In the first rinsing step (B) and the second rinsing step (D), the rinsing time t5 (for example, 3 minutes) at the rotational speed increased after the first predetermined time t1 has elapsed is It is set to be longer than the rinsing time t1 at the rotational speed. Thereby, the contact time of the laundry and the rinsing water can be prolonged, and the rinsing effect can be enhanced.

(Embodiment 3)
FIG. 5 is a time chart showing the operation of the drum type washing machine in the third embodiment of the present invention. In addition, the thing of the same structure as Embodiment 1, 2 attaches | subjects the same code | symbol, and the thing of Embodiment 1, 2 is used for the description.

In FIG. 5, the control means 22 is the intermediate dehydration process (A) before the rinsing process (B), and the rinsing process (B) from the time when the rotational speed of the rotary drum 1 has decreased from a peak value (for example, 1000 r / min). In the meantime, the water supply valve 11 is controlled to start supplying the rinsing water into the water receiving tank 3, and at the time of transition from the intermediate dehydration step (A) to the rinsing step (B), the rotating drum 1 The rinsing process is started from the state where the laundry sticks to the inner wall. That is, the rotating drum 1
The rinsing water supply is started before the rotation speed of the water drops to a predetermined rotation speed (for example, 80 r / min). Then, the draining operation during the intermediate dehydration step (A) is stopped.

  In the rinsing step (B), the control means 22 controls the rotational speed of the motor 5 and gradually decreases the rotational speed of the rotary drum 1 to control it at a low speed (for example, 80 r / min). Rinsing water is supplied from the outside of the rotating drum 1 to the bottom of the water receiving tank 3 through a water supply valve (water supply means) 11, and the rotating drum 1 rotates while the rinsing water accumulates at the bottom of the rotating drum 1. is doing. The rotating drum 1 rotates while the laundry is attached to the inner wall of the rotating drum 1, and the laundry passes through the rinse water accumulated at the bottom of the rotating drum 1.

  Thereafter, when the predetermined water level N2 is detected by the water level detection means 12, the control means 22 stops water supply and the rotational speed of the rotary drum 1 is determined from the drum rotational speed (for example, 1000 r / min) during the intermediate dewatering step (A). Is increased at a slower level (for example, 150 r / min), and the rinsing step (B) is continued. When a predetermined time t6 (for example, 5 minutes) elapses in the rinsing step (B), the drain pump 10 is controlled to start draining, and the rotation speed of the motor 5 is controlled to rotate the rotating drum 1 without stopping. The number is gradually increased to control at a high speed (for example, 1000 r / min), and the process proceeds to the final dehydration step (C) in which the rinse water is dehydrated from the laundry.

  As described above, according to the present embodiment, from the time when the rotational speed of the rotary drum 1 has decreased from the peak value in the intermediate dehydration step (A) before the rinsing step (B), the rinsing step (B) is started. In the meantime, the rinsing water supply into the water receiving tub 3 is started, and at the time of transition from the intermediate dehydration step (A) to the rinsing step (B), the laundry is rinsed from the state where the laundry sticks to the inner wall of the rotating drum 1 Step (B) is started, water supply is started before the rinsing step (B) is executed, and a waiting time until a predetermined amount of rinse water is supplied, that is, a predetermined water level N2 is set. The time until detection can be shortened to increase the rinsing effect, and the laundry can stick to the inner wall of the rotating drum 1 in a balanced state, and the process can proceed to the rinsing step (B). Balanced process It is possible to perform a sustained rinsing step with (B), by removing the transitional balance control operation to rinsing step from the intermediate dehydrating step (A) (B), it is possible to shorten the operation time.

  That is, in the intermediate dehydration process, water supply for the rinsing process is started after dehydrating for a predetermined time at the peak value, so that the dehydration function for discharging the washing liquid can be completed and the preparation of the rinsing process can be started. The time during which the rotational speed of the rotary drum 1 is reduced can be effectively utilized without reducing the dewatering function.

  Further, in the intermediate dewatering step (A) other than the final dewatering step (C), in the water receiving tank 3 between the time when the rotational speed of the rotary drum 1 has decreased from the peak value and the start of the rinsing step (B). The water supply is started before the rinsing step (B) is performed by starting the water supply of the rinse water and stopping the drainage from the water receiving tank 3, and the water level detection means 12 detects the predetermined water level N2. The time until this can be shortened, and the rinsing effect can be enhanced.

  Further, since the rotating drum 1 does not stop in the process from the dehydration process (A) to the rinsing process (B) → the final dehydration process (C), the intermediate dehydration process (A) is changed to the rinsing process (B). At the time of transition, the rinsing process can be started from a state in which the laundry is stuck to the inner wall of the rotating drum 1. Therefore, during the rinsing step (B), the state where the laundry is stuck to the inner wall of the rotating drum 1 can be maintained, and the process proceeds to the final dehydration step (C) without performing the balance control operation again in the middle of the step. Can do.

Further, in the rinsing step (B), the rotating drum 1 rotates with the laundry stuck inside, and rinsing water is accumulated at the bottom of the rotating drum 1. Rinsing process (B)
Then, the laundry absorbs by passing the rinsing water as the rotating drum 1 rotates, and after passing, the rinsing water absorbed by the laundry by the centrifugal force passes through the water passage holes 2 in the outer peripheral portion of the rotating drum 1. And move toward the water receiving tank 3. At this time, when the predetermined water level N2 is detected by the water level detection means 12, the control means 22 stops the water supply and improves the number of rotations of the rotary drum 1, so that the number of times of rinsing water absorption and discharge into the laundry increases. The effect can be improved.

  Moreover, since the rotary drum 1 has the rotating shaft 4 inclined upward from the horizontal direction, the depth of the rinse water accumulated at the bottom of the rotary drum 1 is deeper in the back of the rotary drum 1. . On the other hand, since the laundry is in a state in which a large amount of the laundry is fixed to the back side of the rotary drum 1 by the rotation of the rotary drum 1, the contact between the laundry and the rinse water is improved, and the rinse effect can be improved. it can.

  Moreover, the control means 22 stops the drainage from the water receiving tank 3 before starting the water supply into the water receiving tank 3 at the time of the transition from the intermediate dehydration process (A) to the rinsing process (B). ing. That is, after the drainage is stopped by controlling the drainage pump (drainage means) 10 via the power switching means 15, the water supply valve (water supply means) 11 is controlled to start the water supply. Since the drainage is stopped before the rinsing, the rinsing water can be accumulated in the water receiving tank 3 earlier, and more water can be used as the rinsing water than at the start of the rinsing process, so that the rinsing effect can be enhanced. In addition, since there are few remaining detergent components in the waste water, and this waste water can be used for rinsing, the effect of being able to be rinsed with a small amount of rinse water is also obtained.

  In addition, although the example which performs the water supply stop of the rinsing water and the increase in the rotation speed of the rotary drum 1 at the same time has been described by the water level detection unit 12, it is not always necessary to perform the same simultaneously. The rotational speed may be increased later, or two levels of predetermined water levels may be provided, and the low speed rotation period and the high speed rotation period may be set in the rinsing step (B).

  In addition, said Embodiment 1-3 can each be implemented independently, and in order to achieve the objective of this invention, these can be implemented together. In addition, part of the configuration described in each embodiment can be implemented together with other embodiments.

  As described above, the drum-type washing machine according to the present invention is useful as a drum-type washing machine because it can increase the rinsing effect of the laundry and shorten the washing time.

Sectional drawing of the drum type washing machine in Embodiment 1 of this invention Block diagram of the drum type washing machine Time chart showing the operation of the drum type washing machine Time chart showing operation of drum type washing machine in embodiment 2 of the present invention Time chart showing the operation of the drum type washing machine in Embodiment 3 of the present invention Sectional view of a conventional drum-type washing machine Block diagram of the drum type washing machine

Explanation of symbols

1 Rotating drum 3 Water receiving tank 5 Motor 10 Drain pump (drainage means)
11 Water supply valve (water supply means)
12 Water level detection means 22 Control means

Claims (7)

A rotating drum rotatably disposed in the water receiving tank, a motor for driving the rotating drum, a water supply means for supplying water into the water receiving tank, and a draining means for draining the washing water in the water receiving tank. Control means for controlling the driving of the motor, and controlling each of the steps of washing, rinsing and dehydration, the control means performing the rinsing process a plurality of times and supplying rinsing water supplied in the first rinsing process A drum type washing machine in which the amount of water is larger than the amount of water supplied in the second rinsing step. The drum type washing machine according to claim 1, wherein the control means sets the rotational speed of the rotating drum in the first rinsing step to be higher than the rotational speed in the second rinsing step. The drum type washing machine according to claim 1 or 2, wherein the control means increases the rotational speed of the rotary drum after a predetermined time has elapsed since the start of water supply in the rinsing step. The drum-type washing machine according to claim 3, wherein the control means sets the rinsing time at the rotational speed increased after the first predetermined time has elapsed in the rinsing step to be longer than the rinsing time at the rotational speed before the increase. The drum-type laundry according to any one of claims 1 to 4, wherein the control means raises the laundry from the state where the laundry is stuck to the inner wall of the rotating drum to the dehydrating rotational speed when shifting from the rinsing step to the dehydrating step. Machine. 6. The control device according to claim 1, wherein the control means executes the rinsing step from a state in which the laundry is stuck to the inner wall of the rotating drum during the transition from the intermediate dehydration step before the rinsing step to the rinsing step. Drum-type washing machine. The drum type washing machine according to any one of claims 1 to 6, wherein a rotating shaft of the rotating drum is inclined forwardly upward.