WO2021039136A1

WO2021039136A1 - Washing machine

Info

Publication number: WO2021039136A1
Application number: PCT/JP2020/026632
Authority: WO
Inventors: 裕美子河本; 秀夫芳賀
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2019-08-30
Filing date: 2020-07-08
Publication date: 2021-03-04
Also published as: TWI844705B; CN114258440A; CN114258440B; JP2021035406A; TW202108845A; JP7470895B2

Abstract

A drum-type washing machine according to the present disclosure comprises: a tank (42) elastically supported in a washing machine casing body (41); a rotating drum (43) which is rotatably disposed in the tank (42); a water supply valve (57) which is a water supply device for supplying water into the tank (42); a motor which rotationally drives the rotating drum (43); and a drainage path (55) which drains the water in the tank (42). Further, the drum-type washing machine comprises: a drainage pump (63) which is disposed in the middle of the drainage path (55) and which sucks up and drains the water; a filter which is disposed in the drainage path (55) and which captures foreign bodies; and a control device which successively controls each process such as wash, rinse, and spin. The control device intermittently drives the drainage pump (63) in the draining operation performed by the drainage pump (63). Thus, a mass such as lint which is captured by the filter is pulverized by the water flow generated by the intermittent operation of the drainage pump (63) and is discharged via the drainage path (55).

Description

Washing machine

This disclosure relates to a washing machine.

Conventionally, a washing machine that captures lint and the like with a drainage filter has been proposed.

This washing machine has a water tank that is elastically supported in the main body, a storage tank that is rotatably provided in the water tank, a water supply means that supplies water to the water tank, a motor that rotationally drives the washing tub, and discharges water in the water tub. It is equipped with a drainage route. In addition, a drainage pump provided in the middle of the drainage path to suck and drain water, a filter case provided in the drainage path and provided with a drainage filter to catch foreign matter, and a circulation path via the filter case. It is provided with a circulation pump for circulating washing water. Further, the drainage filter filters the washing water circulating in the circulation path by driving the circulation pump, and captures lint and the like contained in the washing water (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-146984

However, in the conventional washing machine, there is a risk that the drainage filter will be clogged with lint and the like, causing poor drainage. In addition, the user had to frequently clean the drainage filter to prevent clogging of the drainage filter.

The present disclosure provides a washing machine that reduces the labor of cleaning the user by crushing the dust trapped in the filter.

The washing machine in the present disclosure includes a water tank elastically supported in the main body, a rotary drum rotatably provided in the water tank, a water supply means for supplying water to the rotary drum or the water tank, a motor for rotationally driving the rotary drum, and a water tank. It is equipped with a drainage route for draining the water inside. In addition, a drainage pump provided in the middle of the drainage path to suck and drain water, a filter provided in the drainage path to catch foreign matter, and a washing operation including a washing stroke, a rinsing stroke, and a dehydration stroke are sequentially controlled. It includes a control unit. Further, the control unit intermittently drives the drainage pump in the drainage operation by the drainage pump.

The washing machine in the present disclosure reduces the labor of cleaning the user by crushing the dust trapped in the filter.

FIG. 1 is an exploded perspective view of the washing machine according to the first embodiment. FIG. 2 is a vertical cross-sectional view of the washing machine according to the first embodiment. FIG. 3A is a schematic view showing a state in which lint is accumulated on the drying filter of the drying path of the washing machine according to the first embodiment. FIG. 3B is a schematic view showing a state in which the lint accumulated on the drying filter of the drying path of the washing machine according to the first embodiment has been washed away. FIG. 4A is a perspective view of a main part around the filter of the washing machine according to the first embodiment. FIG. 4B is a perspective view of a main part in which the filter is removed around the filter of the washing machine according to the first embodiment. FIG. 5A is a schematic view showing the flow of water during circulation in the filter of the washing machine according to the first embodiment. FIG. 5B is a schematic view showing the flow of water at the time of drainage in the filter of the washing machine according to the first embodiment. FIG. 6 is an operation flowchart of the washing machine according to the first embodiment.

Hereinafter, embodiments will be described in detail with reference to the drawings. The present invention is not limited by the accompanying drawings and the following description.

(First Embodiment)
Hereinafter, the first embodiment will be described with reference to FIGS. 1 to 4A and 4B.

(Washing machine configuration)
FIG. 1 is an exploded perspective view of the washing machine according to the first embodiment. FIG. 2 is a vertical cross-sectional view of the washing machine according to the first embodiment. FIG. 3A is a schematic view showing a state in which lint is accumulated on the drying filter of the drying path of the washing machine according to the first embodiment. FIG. 3B is a schematic view showing a state in which the lint accumulated on the drying filter of the drying path of the washing machine according to the first embodiment has been washed away.

The description of the washing machine in the present embodiment will be described by the drum type washing machine.

In FIGS. 1 and 2, a water tank unit 49 is provided inside the washing machine housing 41. The water tank unit 49 includes a water tank 42, a rotary drum 43, and a motor 45.

The water tank 42 is rotatably arranged inside the washing machine housing 41, and the rotary drum 43 is rotatably arranged inside the water tub 42. The rotating drum 43 is formed in a bottomed cylindrical shape, and the front side is opened as a clothing entrance / exit 53.

A rotation shaft (rotation center axis) 44 extending in the horizontal direction is provided at the rotation center portion of the rotation drum 43, and a motor 45 arranged near the back surface side of the water tank 42 is provided on the rotation shaft 44. They are connected via a belt 46. The motor 45 rotationally drives the rotary drum 43 in the forward or reverse direction.

Several protrusions 47 for stirring the laundry are provided on the inner wall surface of the rotating drum 43. Further, a large number of water passage holes 48 are provided on the outer peripheral wall of the rotary drum 43 in order to allow water to pass inside and outside the rotary drum 43.

The water tank 42 is vibration-proof supported by a plurality of anti-vibration dampers 51 attached to the lower part of the washing machine housing 41, and a plurality of spring bodies (a plurality of spring bodies (between the upper part of the washing machine housing 41 and the water tank 42) are supported. (Not shown) provides anti-vibration support so that it can swing freely.

The washing machine housing 41 is formed with a housing opening 50 at a position facing the clothes inlet / outlet 53 of the rotating drum 43. The lid 52 is provided so as to cover the housing opening 50 so as to be openable and closable. By opening the lid 52, laundry can be taken in and out of the rotating drum 43 through the clothes entrance 53.

A control device 81 is provided in the upper part of the washing machine housing 41. The control device 81 is composed of a microcomputer or the like. The control device 81 controls the motor 45, the water supply valve 57 as a water supply means, the drainage pump 63, the circulation pump 67, and the like according to the mode setting and the control program, and performs a washing operation including a washing stroke, a rinsing stroke, and a dehydration stroke. In addition, the drying process for drying the clothes is sequentially controlled.

Inside the washing machine housing 41, there is a water supply path 54 that supplies washing water (for example, tap water) into the water tank 42, and a drainage path 55 that discharges the washing water in the water tank 42 to the outside of the washing machine housing 41. And a water circulation path 56 for circulating the washing water in the water tank 42 are provided.

The water supply path 54 is composed of a water supply hose 60, a detergent storage unit 61, and a water injection hose 62.

A water supply valve 57, which is a water supply device, is connected to the water supply hose 60.

The detergent storage unit 61 stores a drawer unit (not shown) for storing detergent and a soft finishing agent so that it can be pulled out from the outside. By opening the water supply valve 57, washing water flows into the water supply hose 60. The washing water that has flowed into the water supply hose 60 passes through the detergent storage unit 61 and the water injection hose 62, and is supplied into the water tank 42.

The drainage path 55 is composed of a drainage pipe 64, a filter outer shell 82, a drainage pump 63, and a drainage hose 66.

The drainage pipe 64 connects the drainage port 95 provided at the bottom of the water tank 42 and the inflow port 82a provided in the filter outer shell 82. The filter 65 is housed inside the filter outer shell 82. Details of the inside of the filter 65 and the filter outer shell 82 will be described later.

The drainage pump 63 is arranged between the filter outer shell 82 and the drainage hose 66. The drain hose 66 is connected to an outlet 82b provided on the outer shell 82 of the filter, and extends from the inside of the washing machine housing 41 to the outside and upper side of the washing machine housing 41. By driving the drainage pump 63, the washing water in the water tank 42 passes through the drainage pipe 64, the filter outer shell 82, the drainage pump 63, and the drainage hose 66 in this order and is drained to the outside.

The water circulation path 56 is composed of a drain pipe 64, a filter outer shell 82, an inflow side path 68, a circulation pump 67, a discharge side path 69, and a spout 80.

The inflow side path 68 is a path connecting the filter outer shell 82 and the circulation pump 67. The discharge side path 69 is a path connecting the circulation pump 67 and the ejection port 80. The spout 80 is provided at the front portion of the water tank 42 so as to discharge the washing water passing through the discharge side path 69 into the rotary drum 43. By driving the circulation pump 67, the washing water in the water tank 42 is charged with the drain pipe 64, the inflow port 82a, the filter outer shell 82, the filter portion 65a described later, the inflow side path 68, the circulation pump 67, the discharge side path 69, and the like. It passes through the spout 80 in order and is discharged into the rotating drum 43 as circulating water. By circulating the washing water in this way, the detergent can be quickly dissolved, so that the washing and rinsing ability of the drum-type washing machine is improved.

A plurality of spouts 80 are provided side by side in the circumferential direction of the rotary drum 43, and each of the plurality of spouts 80 ejects circulating water toward clothing in the rotary drum 43.

An air trap (not shown) is formed on the side wall behind the bottom of the water tank 42. The air trap is connected to the air pipe 75. The air pipe 75 is connected to the water level detecting means 76 provided in the upper part of the washing machine housing 41, and the water level detecting means 76 is composed of, for example, a pressure sensor or the like. The water level detecting means 76 detects the water level of the washing water in the water tank 42 based on the water pressure of the washing water inside the water tank 42, that is, the pressure in the corresponding air trap.

The drum-type washing machine shown in FIG. 1, which is the washing machine of the present embodiment, is equipped with a drying function, and the air warmed by the drying heater 70 is rotated from the water tank 42 through the duct 72 by the blower fan 71. It is sent into the drum 43. Further, while the rotating drum 43 rotates left and right at a low speed, air containing moisture is sucked from the rear of the water tank 42 to dehumidify the moisture of the air, and then the rotating drum 43 is heated again by the drying heater and the rotating drum 43 is heated from the water tank 42 by the blower fan. Circulate to send in. By this operation, clothes are dried.

As shown in FIGS. 3A and 3B, the drying filter 74 for collecting the lint 78 generated by drying and the lint 78 accumulated on the drying filter 74 are washed away on the warm air circulation path 73. Shower device 77 is provided. As will be described later, the shower device 77 is executed during water supply in the rinsing process to wash away the lint (FIG. 3A) accumulated on the drying filter in the previous drying operation (FIG. 3B). Therefore, in the washing machine of the present embodiment, the user does not have to take care of the drying filter.

(Configuration around the filter)
FIG. 4A is a perspective view of a main part around the filter of the washing machine according to the first embodiment. FIG. 4B is a perspective view of a main part in which the filter is removed around the filter of the washing machine according to the first embodiment. FIG. 5A is a schematic view showing the flow of water during circulation in the filter of the washing machine according to the first embodiment. FIG. 5B is a schematic view showing the flow of water during drainage in the filter of the washing machine according to the first embodiment. In addition, in FIG. 4A, FIG. 4B, FIG. 5A, and FIG. 5B, the connection hose is omitted. The filter 65 is mainly composed of a filter portion 65a, a collision portion 65b, a support portion 65c, and a grip portion 65d. The filter 65 suppresses foreign matter from being sucked into the drainage pump 63 and the circulation pump 67.

The grip portion 65d is provided so as to be on the front side of the drum type washing machine. The grip portion 65d is provided for the user to attach and detach the filter 65 to and from the filter outer shell 82 while gripping the grip portion 65d.

The support portion 65c is formed so as to extend from the grip portion 65d, and supports the filter portion 65a and the collision portion 65b.

The filter portion 65a is provided at a position closer to the drainage pump 63 than the inflow side path 68, and is formed on a substantially disk so as to close the inside of the filter outer shell 82. The filter portion 65a is formed in a mesh shape and captures lint 78 and the like contained in the washing water circulating in the water circulation path 56.

The collision portion 65b is provided at a position closer to the drainage pump 63 than the filter portion 65a, and is formed in a substantially disk shape. The collision portion 65b suppresses that foreign matter larger than the lint 78 is sucked into the drainage pump 63. Further, the collision portion 65b also has a role of breaking the lint 78 flowing from the filter portion 65a as described later.

The operation and operation of the drum-type washing machine configured as described above will be described below.

(Washing operation)
FIG. 6 is an operation flowchart of the washing machine according to the first embodiment.

The washing operation will be described below as an example. After the user opens the lid 52, puts the laundry into the rotating drum 43, turns on the power switch (not shown), and then starts the input setting means (not shown) provided on the operation display unit 79. When the switch (not shown) is operated, the washing operation is started.

When the washing operation starts, the washing process starts (step S1). Subsequently, the water supply valve 57 opens to supply water to the water tank 42 (step S2).

When water is supplied to the water tank 42 to a predetermined water level, the rotating drum 43 rotates left and right to perform washing and stirring (step S3). In the washing and stirring, the circulation pump 67 is driven, and the washing water circulates in the water circulation path 56. The washing water flows as shown by the arrow a in FIG. 5A, and the filter unit 65a filters the washing water flowing in from the inflow port 82a and captures the lint 78 contained in the washing water. The trapped lint 78 aggregates on the drainage pump 63 side of the filter unit 65a and accumulates as a lump. After washing and stirring for a predetermined time, the process proceeds to the rinsing process (step S4).

In the rinsing process, drainage, intermediate dehydration, and rinsing agitation are performed. First, the drainage pump 63 is driven, the washing water flows as shown by the arrow b in FIG. 5B, and the drainage operation is performed (step S5). In step S5, the drainage pump 63 performs intermittent drive that repeats driving and stopping in a cycle of a predetermined time.

Due to the intermittent drive, as shown by the arrow c in FIG. 5B, a water flow is generated in the suction direction of the drainage pump 63 and in the opposite direction in the longitudinal direction inside the filter outer shell 82. Due to this water flow, the lint 78 accumulated in the filter portion 65a is separated from the filter portion 65a and floats in the water. The lint 78 detached from the filter portion 65a is sucked toward the drainage pump 63 side by driving the drainage pump 63, and collides with the collision portion 65b. The lint 78a, which has been finely broken by the impact of the collision, is discharged to the outside of the machine together with water at the timing when the drainage pump 63 is driven.

The intermittent drive may be performed by repeating driving for about 2 seconds and stopping for about 1 second, for example. As a result, a sufficient number of collisions can be obtained to break the lint mass into small pieces before the drainage is completed. Further, by making the drive time longer than the stop time, it is possible to prevent the drainage speed from being delayed due to the intermittent drive.

When the water level detecting means 76 detects that the water level has dropped to the reset water level (step S6, Yes), the drainage pump 63 stops the intermittent drive and continuously drives (step S7). The reset water level is a water level at which clothing in the rotary drum 43 is not immersed in water, and the reset water level in the present embodiment is set below the lower end of the rotary drum 43. The finely broken lint 78a remaining in the filter outer shell 82 in the finely broken state is collectively discharged in the continuous drive.

In step S7, the control device 81 performs a saturation determination for determining whether drainage is completed (not shown). In the saturation determination, for example, the water level is detected by the water level detecting means 76 every few seconds, and when the displacement of the detected water level becomes equal to or less than a predetermined value, it is determined that the drainage is completed. If intermittent drive is performed in the saturation determination, the water level may fluctuate up and down with the intermittent drive. By continuously driving the drainage pump 63, it is possible to accurately determine whether or not the displacement of the water level is equal to or less than a predetermined value, so that erroneous detection in the saturation determination can be suppressed.

When it is determined that the drainage is completed, the cloth is loosened and stirred so that the dehydration start can be smoothly performed (step S8).

In the cloth loosening agitation, the rotating drum 43 rotates left and right at about 50 r / min for a predetermined time to adjust the unevenness of the clothes in the rotating drum 43. The drainage pump 63 is intermittently driven in the cloth loosening and stirring to suppress the air biting phenomenon. Further, even in the intermittent drive in the cloth loosening stirring, the lump of lint accumulated in the filter portion 65a is broken and discharged to the outside of the washing machine housing 41.

After the cloth is loosened and stirred for a predetermined time, intermediate dehydration starts (step S9). When the dehydration speed reaches 100 r / min (step S10, Yes), the drainage pump 63 changes to continuous drive. Since the amount of drainage increases sharply when the dehydration speed exceeds 100 r / min, drainage can be efficiently performed by continuously driving the drainage pump 63. The intermediate dehydration is continued even after the dehydration rotation speed exceeds 100 r / min while increasing the rotation speed (step S11).

When the intermediate dehydration is completed, water supply starts (step S12). At this time, the lint 78 and the like accumulated in the drying filter 74 in the previous drying operation are washed away by the shower device 77 to the water tank 42 or the drainage path 55. The washed-out lint 78 and the like remain in the water tank 42 or the drainage path 55 until the timing (step S15) when the next drainage pump 63 is driven.

When the predetermined water level is reached, rinsing and stirring starts (step S13). In the rinsing agitation, the rotating drum 43 rotates left and right while the circulation pump 67 is driven to agitate the clothes. After rinsing and stirring for a predetermined time, the process proceeds to the final dehydration process (step S14).

In the final dehydration stroke, the drainage pump 63 is driven to perform drainage (step S15), and the drainage pump 63 is intermittently driven by repeating driving and stopping in a cycle of a predetermined time. Similar to the drainage operation in the rinsing process, the intermittent drive breaks up the lint lumps accumulated in the filter portion 65a and discharges them to the outside of the machine. The lint 78 and the like that have been washed away from the drying filter 74 are also discharged to the outside of the washing machine housing 41.

When the drainage progresses and the water level drops to the reset water level (step S16), the drainage pump 63 changes from intermittent drive to continuous drive (step S17).

When the drainage is finished, the cloth is loosened and stirred (step S18). In the cloth loosening agitation, the drainage pump 63 is intermittently driven to suppress the air biting phenomenon. When the cloth loosening and stirring for a predetermined time are completed, dehydration starts (step S19). When the dehydration speed reaches about 100 r / min (step S20, Yes), the drainage pump 63 changes to continuous drive. Dehydration is continued even after the dehydration rotation speed exceeds 100 r / min while increasing the rotation speed (step S21). When the dehydration for a predetermined time is completed, the washing operation is completed.

(Action)
As described above, the washing machine according to the present embodiment includes a water tank 42 elastically supported in the washing machine housing 41, a rotary drum 43 rotatably provided in the water tank 42, and a rotary drum 43 or a water tank 42. A water supply valve 57, which is a water supply means for supplying water, a motor 45 for rotationally driving the rotary drum 43, and a drainage path 55 for discharging water in the water tank 42 are provided. Further, a drainage pump 63 provided in the middle of the drainage path 55 for sucking and draining water, a filter 65 provided in the drainage path 55 for capturing foreign matter, and each process of washing, rinsing, dehydration, etc. are sequentially controlled. The control device 81 is provided. Further, the control device 81 intermittently drives the drainage pump 63 in the drainage operation by the drainage pump 63.

With this configuration, the lumps of lint 78 and the like captured by the filter 65 are finely crushed by the water flow generated by the intermittent drainage pump 63 and discharged through the drainage path 55. Therefore, it is possible to suppress the drainage defect caused by the clogging of the filter 65, and it is possible to reduce the trouble of cleaning the filter 65 by the user.

Further, as in the present embodiment, the filter 65 may include a filter unit 65a for capturing foreign matter and a collision unit 65b provided at a position closer to the drainage pump 63 than the filter unit 65a.

As a result, the lumps of lint 78 and the like captured by the filter portion 65a collide with the collision portion 65b due to the water flow generated when the drainage pump 63 is driven, and are finely crushed. Therefore, it is possible to suppress the drainage defect caused by the clogging of the filter 65, and it is possible to reduce the trouble of cleaning the filter 65 by the user.

Further, as in the present embodiment, a water circulation path 56 that communicates with the drainage path 55 and circulates water in the water tank 42 and a circulation pump 67 provided in the water circulation path 56 that circulates water are provided. The filter 65 may be provided on the filter outer shell 82 at a position where the water circulation path 56 and the drainage path 55 overlap.

With this configuration, the filter 65 can capture the lint 78 contained in the circulating water passing through the water circulation path 56. Therefore, it is possible to remove the lint contained in the washing water in the washing process and the rinsing process, and to prevent the washing operation from ending with the lint 78 adhering to the clothes.

Further, as in the present embodiment, the water level detecting means 76 for detecting the water level in the water tank 42 is provided, and the water level detected by the water level detecting means 76 in the drainage operation by the control device 81 is a rotating drum. When the water level is below the reset water level, which is lower than 43, the drainage pump 63 may be continuously driven.

With this configuration, when it is determined that the drainage from the water tank 42 is completed, the drainage pump 63 is continuously driven, so that the water level can be suppressed from fluctuating up and down. Therefore, it is possible to suppress the occurrence of erroneous detection when determining that the drainage from the water tank 42 is completed.

Further, as in the present embodiment, in the drainage operation by the drainage pump 63, after the control device 81 continuously drives the drainage pump 63 below the reset water level, the rotary drum 43 is started to rotate and rotates. When the rotation speed of the drum 43 is less than 100 r / min, the drainage pump 63 may be intermittently driven, and when the rotation speed of the rotary drum 43 is 100 r / min or more, the drainage pump 63 may be continuously driven.

With this configuration, when dehydrating the water contained in the laundry by centrifugal force, air biting can be prevented at low speed rotation, and drainage can be performed efficiently in the rotation range where the amount of drainage increases rapidly.

(Other embodiments)
As described above, the first embodiment has been described as an example of the technique of the present disclosure. However, the techniques in this disclosure are not limited to this.

Therefore, other embodiments will be illustrated below.

In the first embodiment, a drum-type washing machine was described as an example of the washing machine. The washing machine is not limited to the drum type washing machine as long as it is equipped with a drainage pump and a filter. The washing machine may be a vertical washing machine or a two-tank washing machine.

Further, in the first embodiment, as an example of the filter, the filter 65 including the filter portion 65a on the substantially disk and the collision portion 65b has been described. The filter may include a filter portion that captures foreign matter and a collision portion provided at a position closer to the drainage pump 63 than the filter portion. Therefore, the filter portion and the collision portion are not limited to substantially on the disk. Further, the filter 65 is not limited to a structure in which the filter portion 65a and the collision portion 65b are supported by the support portion 65c, and may have a substantially box shape or the like. However, the structure in which the filter portion 65a and the collision portion 65b are supported by the support portion 65c is excellent in cleanability because it is easy to remove accumulated lint and the like.

Further, in the first embodiment, a washing machine having a drying function has been described as an example of the washing machine. The washing machine does not have to have a drying function. However, since a washing machine having a drying function generates a large amount of lint during the drying operation, lint tends to remain in the rotating drum 43. The remaining lint is trapped by a filter provided at a position where the circulation path and the drainage path overlap in the washing operation after the drying operation. Therefore, the present disclosure is preferably used in a washing machine having a drying function. Further, a washing machine equipped with a shower device flushes the lint and the like captured by the drying filter into the drainage path, so that a large amount of lint may remain in the water tank or the drainage path. Therefore, the present disclosure is also preferably used in a washing machine equipped with a shower device.

This disclosure is applicable to washing machines equipped with drainage pumps and filters. Specifically, the present disclosure is applicable to vertical washing machines, drum-type washing machines, two-tank washing machines, and the like.

41 Washing machine housing 42 Water tank 43 Rotating drum 44 Rotating shaft 45 Motor 46 Belt 47 Projection plate 48 Water passage hole 49 Water tank unit 50 Housing opening 51 Anti-vibration damper 52 Lid 53 Clothes inlet / outlet 54 Water supply route 55 Drainage route 56 Water circulation Route 57 Water supply valve (water supply device)
60 Water supply hose 61 Detergent storage part 62 Water injection hose 63 Drainage pump 64 Drainage pipe 65 Filter

65a Filter part

65b Collision part

65c Support part

65d Grip part 66 Drainage hose 67 Circulation pump 68 Inflow side route 69 Discharge side route 70 Drying heater 71 Blower Fan 72 Duct 73 Warm air circulation path 74 Drying filter 75 Air pipe 76 Water level detection means 77 Shower device 78 Thread waste 78a Finely broken thread waste 79 Operation display unit 80 Spout 81 Control device (control unit)
82 Filter outer shell 82a Inflow port 82b Outlet

Claims

An elastically supported water tank inside the main body,
A rotating drum rotatably provided in the water tank,
A water supply device that supplies water to the rotating drum or the water tank,
A motor that rotationally drives the rotary drum and
A drainage route for discharging water in the aquarium and
A drainage pump provided in the middle of the drainage path to suck and drain water,
A filter provided in the drainage path to catch foreign matter,
It is equipped with a control unit that sequentially controls the washing operation including the washing process, rinsing process, and dehydration process.
The control unit intermittently drives the drainage pump in the drainage operation by the drainage pump.
Washing machine.
The filter includes a filter unit for capturing foreign matter and a collision unit provided at a position closer to the drainage pump than the filter unit.
The washing machine according to claim 1.
A circulation route that communicates with the drainage route and circulates water in the aquarium,
A circulation pump provided in the circulation path for circulating water is provided.
The filter is provided at a position where the circulation path and the drainage path overlap.
The washing machine according to claim 1.
A circulation route that communicates with the drainage route and circulates water in the aquarium,
A circulation pump provided in the circulation path for circulating water is provided.
The filter is provided at a position where the circulation path and the drainage path overlap.
The washing machine according to claim 2.
It is equipped with a water level detection unit that detects the water level in the water tank.
In the drainage operation by the drainage pump, the control unit continuously drives the drainage pump when the water level detected by the water level detection unit is equal to or lower than the first predetermined water level below the rotating drum.
The washing machine according to any one of claims 1 to 4.
After continuously driving the drainage pump, the control unit starts the rotary drive of the rotary drum.
When the rotation speed of the rotating drum is less than 100 r / min, the drainage pump is intermittently driven.
When the rotation speed of the rotating drum is 100 r / min or more, the drainage pump is continuously driven.
The washing machine according to claim 5.