JP2022147366A - washing machine - Google Patents

Abstract

To provide a washing machine capable of stopping a washing and dewatering tub in a position where cleaning of a lint collection part is easy or in a position where inputting of a detergent is easy.SOLUTION: A washing machine has a collection part which collects lint and a detergent input port in which a detergent is inputted that are provided in a washing and dewatering tub, and it includes a tub position detection part for detecting the position of the washing and dewatering tub. When the rotation of the washing and dewatering tub is stopped, until a predetermined position of the washing and dewatering tub is detected by the tub position detection part, the washing and dewatering tub is rotated by a drive method different from the drive method of a drive motor in a washing step, and in the case where the predetermined position is detected, electricity conduction to the drive motor is stopped or the drive motor is short-circuited.SELECTED DRAWING: Figure 4

Description

The present invention relates to washing machines.

A washing machine has been proposed in which a detergent inlet into which detergent is put and a lint collecting device (filtration device) are attached to the inner side surface of a washing and dewatering tub (Patent Document 1).

Japanese Patent Application Laid-Open No. 2019-150391

In Patent Document 1, the position of the washing machine filtering device (also called a lint collecting portion or a lint collecting portion) remains at the position at the end of washing. For example, the lint collecting portion may stop at the farthest position with respect to the user when the washing is finished or when the washing machine is temporarily stopped. In that case, it is difficult to clean the lint collecting part. Alternatively, there are cases where the detergent slot for putting detergent into the user stops at the farthest side. In that case, it is difficult to put the detergent in.

SUMMARY OF THE INVENTION An object of the present invention is to provide a washing machine capable of stopping a washing and spin-drying tub at a position where a lint collecting part can be easily cleaned or a detergent can be easily added.

In order to achieve the above objects, the washing machine of the present invention is configured as described in the claims.
A specific example of the washing machine according to the present invention includes a washing/drying tub, a driving motor for driving the washing/drying tub, a control unit for controlling the driving motor, and a washing/drying tub provided in the washing/drying tub to disperse lint. A washing machine having a collecting part for collecting and a detergent inlet provided in the washing/drying tub for putting in detergent, the washing machine comprising a tank position detection part for detecting the position of the washing/drying tub, When stopping the rotation of the washing and spin-drying tub, the control unit keeps the driving method of the drive motor different from that in the washing process until the tub position detection unit detects a predetermined position of the washing and spin-drying tub. The washing and dehydrating tub is rotated by a driving method, and when the predetermined position is detected, the energization to the driving motor is stopped or the driving motor is short-circuited.

ADVANTAGE OF THE INVENTION According to the present invention, it is possible to stop the washing and dewatering tub so that the lint collecting part can be easily cleaned or the detergent can be easily added, thereby providing a washing machine which is easy to use. can.
Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS It is a structure explanatory drawing of the washing machine which concerns on embodiment of this invention. 4 is a flow chart showing part of control processing of the main body according to the embodiment of the present invention. 4 is a flow chart showing part of control processing of the main body according to the embodiment of the present invention. It is a flow chart of control processing for stopping a washing and dehydrating tub at a specific position according to an embodiment of the present invention. FIG. 7 is a configuration explanatory diagram of a washing and dehydrating tub according to a second embodiment of the present invention;

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a right longitudinal sectional view of a washing machine according to one embodiment of the present invention. In this embodiment, a washing machine equipped with a drying filter device will be described as an example, but the present invention is not limited to this.
As shown in FIG. 1, the washing machine S includes an outer frame 1 of a housing, an outer tub 2 for storing washing water, a washing and dehydrating tub 3, a rotor disc 4, a clutch mechanism 49, a drive motor 10, and a clutch mechanism 49. and a control unit (not shown) that controls the drive motor 10 .
The outer frame 1 is formed by pressing a sheet metal (iron plate) into a rectangular tubular shape. A base 32 made of synthetic resin is provided on the lower portion of the outer frame 1 . A synthetic resin top cover (upper plate) 6 is provided on the upper portion of the outer frame 1 . Although not shown, the inside of the outer frame 1 is reinforced with a reinforcing member. Further, the base 32 is reinforced by providing grid-like ribs or the like inside.
The outer tank 2 is made of synthetic resin, has a substantially cylindrical shape with a bottom, and is supported in the center of the outer frame 1 via a vibration isolator (not shown). The anti-vibration device consists of a spring or elastic rubber, and supports the outer tank 2 by suspending it from the upper part of the outer frame 1 .
The washing and dewatering tub 3 has a cylindrical shape with a bottom that accommodates laundry (clothes) to be washed, dehydrated and dried. Further, the washing and dehydrating tub 3 has a rotating shaft oriented substantially vertically. The washing and dehydrating tub 3 is provided in the center of the outer tub 2 and is rotatably supported within the outer tub 2 . The washing and dewatering tub 3 has a large number of small through-holes 3a (only some of which are shown in FIG. 1) for water flow and ventilation in its outer peripheral wall. Also, the washing and dewatering tub 3 has a plurality of through holes 3b for water flow and ventilation in its bottom wall. The upper edge of the washing/dehydrating tub 3 is provided with a fluid balancer 3c. At the bottom of the washing and dehydrating tub 3, there is rotatably provided a rotary vane disk 4 for agitating washing water for washing and rinsing.
The rotating blade disk 4 is operated to repeat forward/reverse rotation during the washing operation and the drying operation. Further, the rotary blade disk 4 rotates at high speed together with the laundry in the washing and dehydrating tub 3 during the dewatering operation, and dehydrates the water contained in the laundry by centrifugal force.
A drive motor 10 is provided in the outer frame 1 and selectively rotates the rotor disk 4 and the washing and dewatering tub 3 . A DC brushless motor, for example, is used as the drive motor 10 . A DC brushless motor is controlled by vector control. Further, the driving motor 10 may directly drive the rotary vane disk 4 and the washing/dehydrating tub 3, or may be driven using a reduction mechanism such as a belt. An openable and closable outer lid 5 is provided on the upper portion of the outer frame 1 . The rear side of the outer lid 5 is axially supported by a top cover 6 provided on the upper portion of the outer frame 1 . An inner lid 34 is provided above the outer tub 2 below the outer lid 5 so as to be openable and closable around the rear shaft. The laundry is put in and taken out of the washing and dehydrating tub 3 by opening the outer lid 5 and the inner lid 34 .
A water supply unit 7 is provided inside the outer frame 1 behind the outer lid 5 of the top cover 6 . The water supply unit 7 has a water supply box (not shown) having a plurality of water channels inside. A water supply unit 7 is supplied from a water supply hose connection port 8 protruding upward from the top cover 6 . Tap water or bath water is supplied from the water supply hose connection port 8 and poured into the outer tub 2 . A detergent/softener container 35 is provided on the front side of the top cover 6 . Detergents and finishing agents are poured between the outer tub 2 and the washing and dehydrating tub 3 by an input hose 36. - 特許庁
The washing machine S also includes a drying mechanism 9 for drying laundry. The drying mechanism 9 circulates and dehumidifies the drying air for drying the laundry in the washing and dehydrating tub 3 . The drying mechanism 9 is mostly occupied by a drying air circuit. The drying air circulation path includes a bottom circulation path 20 communicating with the bottom of the outer tub 2 , a temperature sensor 51 , and a dehumidification vertical path 21 (drying duct) extending upward from the bottom circulation path 20 . The dehumidifying vertical passage 21 is not screwed to the outer frame 1 but is integrally formed with the outer tub 2 .
Moreover, the drying mechanism 9 has a blower 22 and a heater (not shown) that generate drying air in the drying process of the washing machine S. As shown in FIG. The lower suction side of the blower 22 is connected to the upper end of the dehumidifying vertical passage 21 .
A drying filter device 45 is arranged between the blower 22 and the dehumidifying vertical passage 21 so that foreign matter does not flow into the blower 22 .
The front discharge side of the blower 22 is connected to the return circuit 25 . The return connection circulation path 25 communicates with the upper portion of the outer tub 2 via a part of the upper bellows hose 23 . The return connection circulation path 25 is formed with a discharge port 23 a for discharging dry air into the washing and dehydrating tub 3 . From the outlet 23a, as indicated by the arrow in FIG. 1, dry air is discharged from the upper bellows hose 23 into the washing and dehydrating tub 3 in the vertical direction downward so as to be blown onto the outer peripheral area of the rotor blade disc 4. It has become.
The bottom circulation path 20 communicates with the bottom side surface (peripheral surface) of the outer tank 2 . A bottom recess 31 provided at the bottom of the outer tub 2 communicates with a washing water drainage channel 42 for drainage via a normally closed drain valve 44 which is opened only during drainage.
The drain valve 44 is closed during the washing operation and the drying operation. The drain valve 44 is opened at the time of draining the washing water, and drains the washing water and rinsing water accumulated in the outer tub 2 to the outside of the washing machine S (outside the machine) through the washing water drain path 42.例文帳に追加A solenoid valve, for example, is used as the drain valve 44 .
Washing water and rinsing water accumulated in the outer tub 2 flow from the water circulation paths 11a and 12a into the water circulation paths 11b and 12b, and then flow upward through the water circulation paths 11b and 12b. The lint filter (lint collecting portion) 33 removes the lint from the washing water that has ascended through the circulation channels 11 b and 12 b , and enters the washing/dehydrating tub 3 .

When the power switch 47 is pushed and the power is turned on, the washing machine main body is started and executes a basic control processing program for washing and drying as shown in FIGS. Further, FIG. 4 shows a control flow for stopping the washing and dehydrating tub 3 at a specific position. The control flow is described below.
<<Step S101>>
Check the status of the washer/dryer and make initial settings.
<<Step S102>>
The washing/drying course is set according to the instruction input from the operation button switch 48 . If there is no instruction input, the standard washing/drying course or the previously executed washing/drying course is automatically set.
<<Step S103>>
An instruction input from the start switch of the operation button switch 48 is monitored to branch the processing.
<<Step S104>>
Execute the detergent amount detection process. This amount of detergent is detected by rotating the rotary blade disc 4 in one direction while the washing and dehydrating tub 3 is stationary while the clothes are dry before the washing water is supplied. The clutch mechanism 49 and drive motor 10 are controlled so as to detect the amount of laundry based on the amount of rotation load applied, and the appropriate amount of detergent (detergent amount) is obtained based on the detected amount of laundry.
<<Step S105>>
Display the required amount of detergent.
<<Step S106>>
The detergent supply solenoid valve is opened to supply the detergent to the detergent input chamber of the detergent/softener container 35 . The user puts the displayed amount of powder detergent or liquid detergent into the detergent/softener container 35 into the detergent-filling chamber, and then closes the outer lid 5 . The powder detergent or liquid detergent put into the detergent feeding chamber where the detergent water supply flows flows through the detergent/softener inlet together with the water of the detergent water supply and drops to the bottom of the outer tub 2 .
<<Step S107>>
Stop the water supply when the detergent reaches the water level. The detergent dissolving water level is the amount of water sufficient to mix the water supplied at the bottom of the washing and dehydrating tub 3 with the detergent when the washing and dehydrating tub 3 is rotated in the subsequent detergent dissolving step (step S108). and the water surface is set to be lower than the height of the lower surface of the rotary blade disk 4.
<<Step S108>>
By activating the power transmission of the washing/drying tub 3 and the rotary blade disk 4 (making them integral and movable) and slowly rotating in one direction, the bottom of the outer tub 2 is moved to the bottom of the washing/drying tub 3. The detergent dissolving water and the powdered detergent or liquid detergent that have been put in are stirred to perform detergent dissolving to generate washing water with a high concentration of detergent.
<<Step S109>>
Carry out a pre-wash. In this pre-washing, the washing and dehydrating tub 3 is kept stationary, and the rotary blade disc 4 is intermittently stirred by rotating the rotary blade disc 4 in the forward and reverse directions. from the upper surface of the washing and dehydrating tub 3. Next, while the rotary blade disc 4 is stopped, the detergent water supply electromagnetic valve and the washing water supply electromagnetic valve are opened while referring to the detection signal of the water level sensor 50, and water is supplied so that the water level does not exceed the set water level. By repeating this operation a plurality of times, the clothes are soaked in washing water and dispersed on the rotary blade disk 4. - 特許庁
<<Step S110>>
Execute the main wash. In this main washing, first, the amount of laundry is detected in the same manner as described above, and the set washing time is corrected and set. The forward and reverse rotation of the rotating blade disk 4 alternates the clothes in the circumferential direction and the radial direction in the washing and dewatering tub 3, so that the clothes are evenly washed.
<<Step S111>>
Perform the first reservoir rinse. In this water rinsing, first, after opening the drain valve 44 and draining the wash water accumulated in the bottom of the outer tub 2, the power transmission between the washing and dewatering tub 3 and the rotary blade disc 4 is enabled, and the water flows in one direction. Centrifugal dehydration of washing water contained in the clothes is performed by rotating the clothes. The rotation speed of the washing and dehydration tub 3 and the rotary blade disk 4 during this wash water dehydration is set to be the same as the rotation speed (about 1000 r/min) in the final dehydration described later, and the dehydration operation is performed so as to achieve a high dehydration rate. do
After that, the drain valve 44 is closed to enable the power transmission between the washing and dehydrating tub 3 and the rotary blade disc 4, and while slowly rotating in one direction, the washing water supply solenoid valve is opened to pour tap water from the sprinkling blade into the rotary blade. Water is supplied so as to drip onto the clothes on the board 4. - 特許庁
Next, with the washing and dewatering tub 3 and the rotary blade disk 4 stopped rotating, rinse water is supplied so that the water level at the bottom of the outer tub 2 does not exceed the set water level.
Next, in the same manner as the push washing agitation in the main washing, the washing and dehydrating tank 3 is kept stationary and the rotary blade disk 4 is rotated forward and reverse to remove the rinse water accumulated at the bottom of the outer tank 2 into the washing and dehydrating tank. 3. Rinse water circulation agitation rinsing is performed by circulating from the upper surface so as to fall on the clothes on the rotary blade disc 4.
Next, while the rotation of the rotary vane disk 4 is stopped, the water level of the rinsing water accumulated in the bottom of the outer tank 2 is detected, and water is supplied so that the water level does not exceed the set water level.
Next, while the washing and dewatering tub 3 is kept stationary, the rinsing water collected at the bottom of the outer tub 2 is poured onto the clothes on the rotor blade 4 from the upper surface of the washing and dewatering tub 3 while rotating the rotor blade 4 forward and backward. Perform a rinse water circulating agitated rinse with drenching circulation. As in washing, the clothes in the washing and dehydrating tub 3 are exchanged in the circumferential direction and the radial direction, so that the rinsing water is evenly applied to the clothes and the detergent is diluted.
<<Step S112>>
Perform a second reservoir rinse. This second water rinsing is performed by opening the softener water supply electromagnetic valve and supplying water to the softener charging chamber in the detergent/softener container 35 , thereby removing the softener from the softener charging chamber into the outer tank 2 . Introduced at the bottom of the Other operations are performed in the same manner as in the first rinsing.
<<Step S113>>
Execute the final dehydration process. In the final dehydration, with the drain valve 44 left open, the power transmission between the washing and dehydrating tub 3 and the rotary blade disc 4 is enabled, and the driving mechanism is operated to rotate at a high speed of about 1000 r/min in one direction. Then, the clothes in the washing and dehydrating tub 3 are centrifugally dehydrated. The operation time for this final dehydration is set to a time at which a desired dehydration rate is obtained.
<<Step S114>>
Check whether the washing/drying course is set and branch the process.
<<Step S115>>
If the washing/drying course is set, the drying is performed. The blower 22 is operated, and the air heated by the heater is blown into the washing and dehydrating tub 3 from the outlet 23a. The high-temperature and high-humidity air that warms the clothes and evaporates the moisture of the clothes is sucked into a dehumidifying vertical passage 21, cooled and dehumidified by the cooling water that flows down the drying mechanism 9, and becomes dry low-temperature air. The dry low-temperature air is heated again by the heater and blown into the washing and dehydrating tub 3. Drying is carried out by such circulation. The air that has been cooled and dehumidified in the dehumidifying vertical passage 21 passes through a lint filter 33 to collect lint. During drying, the drain valve 44 is opened, and the cooling water flowing down the drying mechanism 9 and the dehumidified moisture are discharged to the outside through the wash water drain path 42 . Drying is performed while monitoring the temperature of the warm air by the temperature sensor 51, and is completed when the rate of temperature change reaches a predetermined value.

Next, specific position stop control of the washing and dehydrating tub 3 is performed. In this embodiment, a tub position detector (position sensor) capable of detecting the position of the washing/drying tub 3 is provided. In this embodiment, the position of the washing/drying tub 3 is detected by the tub position detector when the washing operation ends (when the drying operation ends when the washing/drying course is set) or when the machine is temporarily stopped. After stopping the rotation of the washing/dehydrating tub 3 in the washing process, the washing/dehydrating tub 3 is rotated again. This re-rotation of the washing and dewatering tub 3 is performed at a very low speed. In this embodiment, means for rotating the washing and dehydrating tub 3 at a rotation speed lower than a predetermined rotation speed is provided, and as this means, in this embodiment, it is rotated at a slow speed (for example, at a rotation speed of less than 20 r/min). Equipped with slow speed rotation means (control). The slow speed rotation means (control) in this embodiment is controlled by a drive system different from the drive system of the drive motor in the washing process, for example, control by a synchronous operation system is used. Then, the position of the washing/drying tub 3 is detected by the tub position detector while the washing/drying tub 3 is slowly rotating. The washing/drying tub 3 is rotated by a driving method different from the driving method of the driving motor in the washing process until the tub position detection unit detects a predetermined position (specific position) of the washing/drying tub 3, and the predetermined position is reached. When the (specific position) is detected, the rotation of the washing and dehydrating tub 3 is stopped. As a result, it is possible to stop the washing and dehydrating tub 3 at a position where the lint collecting portion can be easily cleaned or where the detergent can be easily introduced with a simple configuration. Specific position stop control of the washing and dehydrating tub 3 in this embodiment will be described in detail below.
<<Step S116>>
In this embodiment, a position sensor (tub position detector) capable of detecting the position of the washing/drying tub 3 is attached. As an example of a position sensor, the upper portion 52 of the fluid balancer 3c directly above the lint filter 33 is modified to have a recessed structure. A laser sensor capable of measuring distance is used as the position sensor, and the laser sensor is attached to the inner side 46 of the outer tank 2. Light is applied from the laser sensor to the fluid balancer 3c, and the reflected light is received by the light receiving part of the laser sensor to measure the distance. Measure. If the distance is long, the position of the lint filter 33 will be directly below the laser sensor. Using such a position sensor, the driving motor 10 is controlled based on the output signal of the position sensor so as to stop the washing and spin-drying tub 3 at a specific position at the end of the washing/drying course or at a temporary stop.

<<Step S116-1>>
When the washing/drying course is not set or when the drying operation ends, the clutch mechanism is controlled to enable power transmission between the washing/drying tub 3 and the drive motor 10 . When the power transmission between the washing and dewatering tub 3 and the drive motor 10 is enabled, the power supply to the drive motor 10 is stopped, and the process of stopping by inertia (or by short-circuiting the drive motor 10 and stopping by short-circuit braking) is performed.

<<Step S116-2>>
After confirming whether the drive motor 10 is completely stopped, the process is branched.

<<Step S116-3>>
When the drive motor 10 is completely stopped, the control method of the drive motor 10 is changed to the normal operation method (the phase and rotation speed of the motor can be measured using a Hall sensor or the like, and the motor is controlled by rotation speed control (feedback control). drive method) to synchronous operation method (also called "forced commutation", 3-phase alternating current is input to the motor, synchronized with the rotating magnetic field generated from the input current, and the motor is driven without feedback control. method).

<<Step S116-4>>
A start command is sent to the drive motor 10 to restart the drive motor 10 . Positioning processing (processing for forcibly matching the phase of the motor by passing a predetermined current through the magnetic flux axis (d-axis)) is performed at the start of rotation. After the positioning process is completed, the driving motor 10 is rotated at a very low speed by the synchronous operation method.

<<Step S116-5>>
While the driving motor 10 is rotating at a slow speed, the position sensor detects whether the washing and dehydrating tub 3 reaches a specific position, and the process branches. In this embodiment, the specific position is, for example, when the drive motor 10 is de-energized and stopped by inertia, or when the drive motor 10 is short-circuited and stopped by a short-circuit brake, the washing and dewatering tub 3 is stopped. The position of the lint filter 33 is the position substantially on the left and right sides of the washing and dehydrating tub 3 when viewed from the user. In this embodiment, the upper portion 52 of the fluid balancer 3c located directly above the lint filter 33 is formed with a recess, and the position of this recess is detected by a laser sensor. The mounting position of the laser sensor to the washing and dehydrating tub 3 is set to any one of substantially the left and right sides of the washing and dehydrating tub 3 as viewed from the user. Since the drive motor 10 is in a state of slow rotation and can almost eliminate the rotation until it stops due to inertia, the washing and dehydrating tub 3 is in a state in which a dent is located at the mounting position of the laser sensor (a dent is detected by the laser sensor). becomes a specific position of If the rotation from de-energization of the drive motor 10 to inertia-induced stop is relatively large, the amount of rotation from de-energization to the drive motor 10 to inertia-induced stop is confirmed in advance by a test or the like. The mounting position of the sensor is set upstream in the rotational direction of the washing and dehydrating tub 3 by the amount corresponding to the amount of rotation confirmed in advance from any position on the left or right side of the washing and dehydrating tub 3 as viewed from the user. It is desirable to keep Further, since the laser sensor detects the washing/drying tub 3 while it is rotating at a slow speed, the position of the washing/drying tub 3 can be accurately detected.

<<Step S116-6 (same as S116-1)>>
When the specific position detection signal is received, the clutch mechanism is controlled to enable power transmission between the washing and dehydrating tub 3 and the driving motor 10 . When the power transmission between the washing and dewatering tub 3 and the drive motor 10 is enabled, the power supply to the drive motor 10 is stopped, and the process of stopping by inertia (or by short-circuiting the drive motor 10 and stopping by short-circuit braking) is performed.
<<Step S116-7 (same as S116-2)>>
After confirming whether the drive motor 10 is completely stopped, the process is branched.
<<Step S116-8>>
When the driving motor 10 is completely stopped, it is confirmed by the position sensor whether the washing and dehydrating tub 3 is within the specific position allowable range, and the process is branched.

By performing the above control, the lint filters 33 are located on the left and right sides of the washing and dehydrating tub 3 as seen from the user when the washing operation is finished or when the machine is temporarily stopped, so that lint can be easily cleaned.

FIG. 5 is a cross-sectional view showing the structure of a washing and dewatering tub 3 of a washing machine according to another embodiment of the present invention. While the detergent/softener container 35 is installed on the front side of the top cover 6 in the first embodiment, the detergent inlet 53 is located above the lint filter 33 in the washing and dehydrating tub 3 in the second embodiment. It is installed in the combined dehydration tank 3, and is different in that the detergent is introduced from there. The position of the detergent inlet 53 is stopped at the front side of the washing/drying tub 3 (the front side of the washing/drying tub 3), so that the detergent can be easily put into the detergent inlet. In this embodiment, the specific position in step S116-5 is, for example, when power supply to the drive motor 10 is stopped and the drive motor 10 is stopped by inertia, or when the drive motor 10 is short-circuited and stopped by short-circuit braking. When the dewatering tub 3 stops, the detergent inlet 53 is located in front of the washing and dewatering tub 3 . In this embodiment, the detergent input port 53 is provided above the lint filter 33, and the upper portion 52 of the fluid balancer 3c directly above the lint filter 33 is formed with a recessed structure. Since the position is detected by a laser sensor, the position where the laser sensor is attached to the inner side 46 of the outer tub 2 is set in front of the washing and dehydrating tub 3 . Since the drive motor 10 is in a state of slow rotation and can almost eliminate the rotation until it stops due to inertia, the washing and dehydrating tub 3 is in a state in which a dent is located at the mounting position of the laser sensor (a dent is detected by the laser sensor). becomes a specific position of If the rotation from de-energization of the drive motor 10 to inertia-induced stop is relatively large, the amount of rotation from de-energization to the drive motor 10 to inertia-induced stop is confirmed in advance by a test or the like. It is desirable to set the mounting position of the sensor upstream of the washing/drying tub 3 in the rotational direction by an amount corresponding to the amount of rotation confirmed in advance from the front position of the washing/drying tub 3 .

It should be noted that the present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments have been described in detail to facilitate understanding of the present invention, and are not necessarily limited to those having all the described configurations. Also, it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Moreover, it is possible to add, delete, or replace a part of the configuration of each embodiment with another configuration.

S: Washing machine 1: Outer frame 2: Outer tub 3: Washing and dehydrating tub 4: Rotating blade disc 10: Drive motor 33: Thread Waste filter, 49... Clutch mechanism, 53... Detergent inlet.

Claims (6)

a washing and dewatering tank,
a driving motor for driving the washing and dehydrating tub;
a control unit that controls the drive motor;
a collection unit provided in the washing and dewatering tub for collecting lint;
A washing machine provided in the washing and dehydrating tub and having a detergent inlet for injecting detergent,
A tank position detection unit that detects the position of the washing and dewatering tank,
When the rotation of the washing and spin-drying tub is stopped, the control unit controls the driving method of the drive motor that is different from that in the washing process until the predetermined position of the washing and spin-drying tub is detected by the tub position detection unit. A washing machine according to claim 1, wherein said washing and dehydrating tub is rotated by a drive system, and when said predetermined position is detected, said drive motor is de-energized or short-circuited. In the washing machine according to claim 1,
After the washing process is completed or temporarily stopped, the washing and dehydrating tub is rotated by a driving method different from the driving method of the driving motor in the washing step, and control is performed to stop the rotation of the washing and dehydrating tub. washing machine. In the washing machine according to claim 1 or 2,
The predetermined position is a position where the collecting part is on the side of the washing/drying tub or the detergent inlet is on the front side of the washing/drying tub when the rotation of the washing/drying tub stops. A washing machine. In the washing machine according to any one of claims 1 to 3,
A washing machine, wherein a driving method different from the driving method of the driving motor in the washing process is a driving method by synchronous operation. In the washing machine according to any one of claims 1 to 4,
The position detection of the washing and dehydrating tub by the tub position detection unit is performed after the washing process is completed or after a temporary stop, by a driving method different from the driving method of the driving motor in the washing process. A washing machine to do while spinning. In the washing machine according to any one of claims 1 to 5,
A washing machine according to claim 1, wherein the rotation speed of said washing and spin-drying tub is lower than a predetermined rotation speed when said tub position detector detects the position of said washing and spin-drying tub.

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