WO2016152034A1

WO2016152034A1 - Washing machine

Info

Publication number: WO2016152034A1
Application number: PCT/JP2016/001085
Authority: WO
Inventors: 士郎二宮; 徹岩佐; 直人山岡
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2015-03-26
Filing date: 2016-03-01
Publication date: 2016-09-29
Also published as: JP6569092B2; CN107429465A; CN110747601A; CN107429465B; JPWO2016152034A1

Abstract

This washing machine comprises a housing, an outer tub supported inside the housing, a washing/spinning tub that is rotatably disposed inside the outer tub, and a balancer device (7) which is disposed on an upper portion of the washing/spinning tub. The balancer device (7) includes an annular body (30) which has annular chambers (33, 34) in which a liquid (38) is enclosed. A plurality of partition walls (36, 37) are radially disposed inside the annular chambers (33, 34) of the annular body (30), each of the plurality of partition walls (36, 37) having a plurality of types of shapes. The partition walls (36, 37) of the plurality of types of shapes are disposed inside the annular chambers (33, 34) in a predetermined arrangement.

Description

Washing machine

The present invention relates to a washing machine for washing clothes.

A conventional washing machine suppresses vibration during dehydration by a balancer device disposed at the top of a washing and dewatering tank (for example, Patent Document 1).

The balancer device is formed by sealing a predetermined amount of liquid inside an annular body formed by welding and sealing an upper annular case and a lower annular case. The balancer device suppresses vibration by causing the liquid in the annular body to move to a position opposite to the position where the unevenness occurs when an imbalance occurs due to the unevenness of clothes, etc. in the washing / dehydrating tub. .

In such a conventional balancer device, in the process of increasing the rotational speed of the washing and dewatering tub during dehydration, the liquid in the annular body moves behind the increase in the rotational speed of the washing machine, and 180 at the time of steady rotation. Since the degree of delay occurs, the vibration particularly during steady rotation increases.

Based on the above principle, the vibration can be suppressed by setting the height of the annular body large, or by configuring the balancer device to be divided into multiple annular chambers.

However, since the balancer device is provided in the upper part of the washing / dehydrating tub, the outer diameter is the size of the washing / dehydrating tub, the inner diameter is sized to allow the laundry to be taken in and out, and the height is the product. The height and the volume of the washing and dewatering tank are limited respectively. For this reason, the conventional washing machine is provided with a balancer device in which an annular body is partitioned into multiple annular chambers.

FIG. 17 is a perspective view in which a part of an example of a balancer device of a conventional washing machine is broken. A conventional washing machine will be described with reference to FIG.

The balancer device 540 has an annular body 543 formed by an upper annular case 541 and a lower annular case 542. The annular body 543 has a circular shape with a constant radial width and a constant inner diameter in plan view when the annular body 543 is viewed from above. The upper annular case 541 is provided with concentric annular

upper partition walls

547 and 548, and the annular

upper partition walls

547 and 548 form three

annular chambers

544, 545 and 546 in the radial direction in the annular body 143. A compartment is formed.

A plurality of

upper partition walls

549a, 549b, 549c are formed in the

annular chambers

544, 545, 546 radially from the inner wall on the outer peripheral side (the

upper partition walls

549a, 549b, 549c is formed). The

upper partition walls

549a, 549b, and 549c have a gap between the inner circumferential side walls of the

annular chambers

544, 545, and 546, and between the inner circumferential side walls of the

annular chambers

544, 545, and 546.

Air circulation ports

553a, 553b, and 553c through which air circulates are provided.

The lower annular case 542 is provided with

lower partition walls

550 and 551 that are in contact with the lower ends of the

upper partition walls

547 and 548 and partition the

annular chambers

544, 545, and 546. The lower annular case 542 is provided with a plurality of

lower partition walls

552a, 552b, and 552c radially at positions corresponding to the

upper partition walls

549a, 549b, and 549c. The

lower partition walls

552a, 552b, and 552c have a gap with the inner peripheral side walls of the

annular chambers

544, 545, and 546, and between the inner peripheral side walls of the

annular chambers

544, 545, and 546. Are provided with

liquid circulation ports

554a, 554b, and 554c through which the liquid sealed in the

annular chambers

544, 545, and 546 flows. The lower annular case 542 is formed with an inlet for injecting liquid into the

annular chambers

544, 545, 546, and the inlet is sealed with

stoppers

555, 556, 557.

When the balancer device 540 as described above is mounted on the upper part of the washing / dehydrating tub, the vibration of the washing / dehydrating tub is suppressed.

When an imbalance occurs in the washing / dehydrating tank due to the position of the clothes in the washing / dehydrating tank, the liquid in the balancer device 540 is unbalanced through the

liquid circulation ports

554a, 554b, 554c of the lower annular case 542. Move to the position to cancel. As the liquid moves, the air in the

annular chambers

544, 545, and 546 moves through the

air circulation ports

553a, 553b, and 553c of the upper annular case 541, so that the liquid moves smoothly and the washing / dehydration tank vibrates. Suppression takes place.

In the configuration of such a conventional balancer device, the flow suppression of the liquid is facilitated by the shape of the partition wall in the annular body, thereby improving the vibration suppressing effect. In general, the balancer device can improve the vibration suppression effect by forming the annular chamber in multiple layers. However, when the number of the annular chambers is increased, the width of the balancer device in the radial direction increases. Since the outer diameter of the balancer device is restricted by the outer diameter of the washing and dewatering tub, if the annular chamber is increased, the inner diameter becomes smaller and it becomes difficult to take in and out the laundry.

On the other hand, when the radial width of the annular body is narrowed to reduce the radial width of the balancer device, the liquid flow path width becomes narrow and the fluid does not flow easily. For example, there is a problem that the vibration amplitude in the washing / dehydrating tub increases at the secondary resonance near the rotational speed of 200-300 rpm of the washing / dehydrating tub, and the vibration suppressing effect is reduced.

JP-A-6-79087

The present invention has been made in view of the above problems, and can improve the workability of putting in and out the laundry without changing the size of the washing and dewatering tub of the washing machine, and also has a high vibration suppressing effect. Provide a washing machine that can get you.

Specifically, a washing machine according to an example of an embodiment of the present invention includes a housing, an outer tub supported in the housing, a washing and dewatering tub rotatably disposed in the outer tub, and a washing machine. A balancer device having an annular body disposed in an upper portion of the cum dewatering tank and enclosing a liquid. In the balancer device, an annular chamber in which a liquid is sealed is formed inside the annular body, and partition walls are arranged radially in the annular chamber. The partition wall has a plurality of types of shapes, and a liquid flow path is formed on the inner peripheral side of the annular body by the partition walls having a plurality of types of shapes. The partition walls having a plurality of types of shapes are provided in the annular chamber in a predetermined arrangement.

With such a configuration, it is possible to provide a washing machine that can obtain a high vibration suppressing effect without changing the size of the washing and dewatering tub of the washing machine and can easily take out clothes. In addition, the balancer device can be reduced in size, and a washing machine capable of obtaining a high vibration suppressing effect can be provided.

FIG. 1 is a longitudinal sectional view of a washing machine according to an embodiment of the present invention. FIG. 2 is a transparent perspective view of a main part of the balancer device of the washing machine according to the embodiment of the present invention. FIG. 3 is a cross-sectional view of the first partition wall of the balancer device for a washing machine according to the embodiment of the present invention. FIG. 4 is a cross-sectional view of the second partition wall of the balancer device for a washing machine according to the embodiment of the present invention. FIG. 5 is a cross-sectional view of the third partition wall of the balancer device for a washing machine according to the embodiment of the present invention. FIG. 6 is a cross-sectional view of the first partition wall of the balancer device for a washing machine according to the embodiment of the present invention. FIG. 7 is a cross-sectional view of the first partition wall of the balancer device of Comparative Example 1 of the washing machine according to the embodiment of the present invention. FIG. 8 is a cross-sectional view of the first partition wall of the balancer device of Comparative Example 2 of the washing machine according to the embodiment of the present invention. FIG. 9 is a characteristic diagram showing the amplitude of the washing and dewatering tub provided with the balancer device of the washing machine according to the embodiment of the present invention. FIG. 10 is a characteristic diagram showing the amplitude of the washing and dewatering tub provided with the balancer device of Comparative Example 1 in the embodiment of the present invention. FIG. 11 is a characteristic diagram showing the amplitude of the washing and dewatering tub provided with the balancer device of Comparative Example 2 in the embodiment of the present invention. FIG. 12 is a perspective view of the washing and dewatering tub of the washing machine according to the embodiment of the present invention. FIG. 13 is a plan view of the balancer device of the washing machine according to the embodiment of the present invention as viewed from above. FIG. 14 is a graph showing the amplitude at the time of dewatering in the washing and dewatering tub in which the balancer device of the washing machine according to the embodiment of the present invention is used. FIG. 15 is a graph showing the amplitude at the time of dehydration in the washing and dewatering tub in which the conventional balancer device is used. FIG. 16 is a graph showing the amplitude at the time of dehydration in a washing and dewatering tub in which a conventional balancer device having a narrow width in the radial direction of the annular body is used. FIG. 17 is a transparent perspective view of a main part of a conventional balancer device of a washing machine.

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

(Embodiment)
A washing machine 100 according to an example of an embodiment of the present invention will be described with reference to FIG.

FIG. 1 is a longitudinal sectional view of a washing machine 100 according to an example of an embodiment of the present invention. In FIG. 1, a frame 1 is provided with a frame base 16 at a lower portion and an upper frame body 22 is provided at an upper portion. An outer tub 3 is elastically suspended by a plurality of suspensions inside the housing 1, and the suspension 2 absorbs vibrations of the outer tub 3 during dehydration. The outer tub 3 is provided with an outer tub cover 13 that covers the upper surface thereof. A washing / dehydrating tub 4 for storing clothes is disposed inside the outer tub 3, and the washing / dehydrating tub 4 is rotatably supported around a hollow shaft 5 having a double structure.

A large number of water holes 4 a are provided in the peripheral wall of the washing and dewatering tub 4. A pulsator 6 for stirring clothes is rotatably provided at the bottom of the washing and dewatering tub 4. The pulsator 6 has a substantially pan-shaped shape having an inclined surface 10 on the outer periphery, and a stirring protrusion 11 is formed on the upper surface.

A motor (driving means) 8 is attached to the outer bottom of the outer tub 3. The rotational force of the motor 8 is selectively transmitted to the washing / dehydrating tub 4 and the pulsator 6 through the shaft 5 by the clutch 9. As the pulsator 6 rotates, the garment is stirred during the rinsing and dehydration. The clothes are changed left and right (rotation direction) and also changed up and down by the stirring of the pulsator 6.

The filter fixing frame 14 is fixed to the side wall in the washing / dehydrating tub 4, and the filter 12 is detachably attached to the filter fixing frame 14. The filter 12 collects lint generated from the laundry during the washing operation through the washing water.

The upper frame 22 has a support member 24 disposed therein, and a water supply valve 17 and a water supply hose (not shown) are attached to the support member 24. The water supply valve 17 has a plurality of valves that open and close the water channel. When the water channel is opened by the water supply valve 17, water is supplied from the water supply member 21 provided on the support member 24 to the detergent dissolving portion 20 in the detergent storage portion 18 through the water supply hose, and then via the detergent dissolving portion 20 and the like. Then, washing water is supplied to the washing and dewatering tank 4. A drain hose 15 is connected to the lower part of the outer tub 3 so that the water after washing, rinsing and dewatering is drained to the outside.

An operation unit 19 is provided at an upper rear position of the upper frame body 22, and a detergent storage unit 18 is disposed at a position close to the operation unit 19 so as to be freely inserted and removed. The upper frame 22 is formed with an opening for putting laundry into and out of the washing and dewatering tub 4 and is provided with an outer lid 23 that closes the opening so as to be freely opened and closed. The outer lid 23 has a handle portion for the user to operate, and has a hinge mechanism in which the outer lid 23 is bent at an intermediate portion of the outer lid 23.

A balancer device 7 is disposed above the washing / dehydrating tank 4. At the time of washing and rinsing, it is rare that the laundry is uniformly located in the washing and dehydrating tub 4 after draining, and generally the laundry is unevenly distributed in the washing and dehydrating tub 4, An unbalanced state occurs in the washing and dewatering tub 4. In order to correct the unbalanced state due to the uneven distribution of the laundry, a balancer device 7 is provided on the inner periphery of the washing and dewatering tub 4.

The balancer device 7 has an outer diameter that is substantially the same as the outer diameter of the washing and dewatering tub 4.

Next, the balancer device 7 of the washing machine 100 according to the embodiment of the present invention will be described with reference to FIGS.

FIG. 2 is a transparent perspective view of a main part of the balancer device of the washing machine 100 according to the embodiment of the present invention. As shown in FIG. 2, the balancer device 7 has an annular body 30 formed by an upper annular case 31 and a lower annular case 32. In the annular body 30, double

annular chambers

33 and 34 are formed in a radial direction by an annular partition wall 35. A plurality of

partition walls

36 and 37 are radially formed in the

annular chambers

33 and 34.

Moreover, the

partition walls

36 and 37 are formed so that the inner peripheral side shapes in the

annular chambers

33 and 34 are substantially the same. Each of the

partition walls

36 and 37 has a plurality of types of shapes. Specifically, for example, in the present embodiment, the

partition walls

36 and 37 include three types of

first partition walls

36a and 37a,

second partition walls

36b and 37b, and

third partition walls

36c and 37c. It has a shape.

FIG. 3 is a cross-sectional view of the balancer device 7 at the

first partition walls

36a and 37a. As shown in FIG. 3, the

first partition walls

36 a and 37 a include outer peripheral side portions 36 a-1 and 37 a-1 that are in contact with the inner peripheral surface of the

annular chambers

33 and 34, and the inner periphery of the

annular chambers

33 and 34. Inner side portions 36a-2 and 37a-2 which are in contact with the inner surface on the side. In the

first partition walls

36a and 37a, the outer peripheral portions 36a-1 and 37a-1 in the

annular chambers

33 and 34 are formed slightly higher than the inner peripheral portions 36a-2 and 37a-2.

Further, in the

annular chambers

33 and 34, the inner peripheral surface of the outer peripheral portions 36a-1 and 37a-1 of the

first partition walls

36a and 37a and the inner peripheral surface of the

annular chambers

33 and 34 are formed.

Grooves

55a and 56a are provided between them. The width dimension of the

groove portions

55a, 56a (the width of the

groove portions

55a, 56a in the radial direction of the annular body 30) is Wa, and the height of the inner peripheral side portions 36a-2, 37a-2 of the

first partition walls

36a, 37a is La, The heights of the outer peripheral portions 36a-1 and 37a-1 of the

first partition walls

36a and 37a are set to LA.

Spaces

57a and 58a are formed in the

annular chambers

33 and 34 above the

first partition walls

36a and 37a, and the flow path of the liquid 38 is configured by the

spaces

57a and 58a and the

grooves

55a and 56a. In the present embodiment, the

first partition walls

36 a and 37 a are formed in the annular body 30 at 24 locations with a central angle of 15 degrees.

The

first partition walls

36a and 37a function as flow paths for the liquid in the

annular chambers

33 and 34 to move by centrifugal force when the washing and dewatering tub 4 is rotating. That is, the liquid in the

annular chambers

33 and 34 is rotated by the

first partition walls

36a and 37a into the

spaces

57a and 58a and the

grooves

55a and 56a above the

first partition walls

36a and 37a in the rotation state of the washing and dewatering tub 4. A flow path for moving by centrifugal force is formed. By forming the

first partition walls

36a and 37a so that the flow path becomes wider, the liquid is efficiently moved.

FIG. 4 is a cross-sectional view of the

second partition walls

36b and 37b of the balancer device 7. As shown in FIG. 4, the

second partition walls

36 b and 37 b include outer peripheral side portions 36 b-1 and 37 b-1 in contact with the inner peripheral surface of the

annular chambers

33 and 34, and the inner periphery of the

annular chambers

33 and 34. Inner side portions 36b-2 and 37b-2 in contact with the inner surface on the side. The

second partition walls

36b and 37b are provided such that the outer peripheral side portions 36b-1 and 37b-1 of the annular body 30 are extended to the upper surfaces of the

annular chambers

33 and 34. Between the inner peripheral surface of the outer peripheral portions 36b-1 and 37b-1 of the

second partition walls

36b and 37b in the

annular chambers

33 and 34 and the inner peripheral surface of the

annular chambers

33 and 34, respectively.

Spaces

57b and 58b functioning as flow paths for moving the liquid are formed. In the present embodiment, the

second partition walls

36b and 37b are formed in twelve locations in the annular body 30 at intervals of central angles of 30 degrees.

Spaces

57b and 58b between the

second partition walls

36b and 37b and the inner surfaces of the

annular chambers

33 and 34 are provided at the lower portions thereof on the outer peripheral side portions 36a-1 and 37a- of the

first partition walls

36a and 37a. The

groove portions

55b and 56b are provided in the same manner as the

groove portions

55a and 56a between the inner peripheral surface of 1 and the inner peripheral surface of the

annular chambers

33 and 34. The height Lb of the inner peripheral portions 36b-2 and 37b-2 of the

second partition walls

36b and 37b is substantially the same as the height La of the inner peripheral portions 36a-2 and 37a-2 of the

first partition walls

36a and 37a. Are formed at the same height.

Further, the width dimension of the

grooves

55b and 56b in the

spaces

57b and 58b between the

second partition walls

36b and 37b and the inner surfaces of the annular chambers 33 and 34 (the widths of the

grooves

55b and 56b in the radial direction of the annular body 30). (Width) Wb is substantially equal to the width dimension Wa of the

groove portions

55a and 56a between the inner peripheral surface of the outer peripheral portions 36a-1 and 37a-1 of the

first partition walls

36a and 37a and the inner surfaces of the

annular chambers

33 and 34. Are formed with the same dimensions.

Since the outer peripheral side portions 36b-1 and 37b-1 of the

second partition walls

36b and 37b extend to the upper surfaces of the

annular chambers

33 and 34, the annular chamber 33 is in a state where the washing and dewatering tub 4 is rotating. , 34 functions so as to limit the movement of the liquid when the liquid in the outer peripheral side moves to the outer peripheral side due to centrifugal force.

FIG. 5 is a cross-sectional view of the

third partition walls

36c and 37c of the balancer device 7 of the washing machine 100 according to the present embodiment. As shown in FIG. 5, the

third partition walls

36 c and 37 c include outer peripheral side portions 36 c-1 and 37 c-1 that are in contact with the inner peripheral surface of the

annular chambers

33 and 34, and the inner periphery of the

annular chambers

33 and 34. Inner peripheral portions 36c-2 and 37c-2 in contact with the inner surface. In the

third partition walls

36c and 37c, as the outer peripheral portions 36c-1 and 37c-1 move upward, the amount of protrusion from the inner wall on the outer peripheral side in the

annular chambers

33 and 34 decreases, and the outer peripheral portion 36c- 1, 37 c-1 and the inner circumferential inner surfaces of the

annular chambers

33, 34 are formed so as to be widened.

Spaces

57c and 58c serving as flow paths for liquid movement are formed between the outer peripheral side portions 36c-1 and 37c-1 of the

third partition walls

36c and 37c and the inner surfaces of the

annular chambers

33 and 34. Has been. The

third partition walls

36c and 37c are formed in the annular body 30 at twelve locations with a central angle of 30 degrees.

The lower portions of the

spaces

57c and 58c between the

third partition walls

36c and 37c and the inner surfaces of the

annular chambers

33 and 34 are inner surfaces on the inner peripheral side of the outer peripheral portions 36a-1 and 37a-1 of the

first partition walls

36a and 37a. Similarly to the

grooves

55a and 56a between the inner surfaces of the

annular chambers

33 and 34,

grooves

55c and 56c are provided. The height Lc of the inner peripheral portions 36c-2, 37c-2 of the

third partition walls

36c, 37c is the height La of the inner peripheral portions 36a-2, 37a-2 of the

first partition walls

36a, 37a, and The

second partition walls

36b and 37b are formed to have substantially the same height Lb as the inner peripheral portions 36b-2 and 37b-2.

The width dimension of the bottom of the

grooves

55c, 56c (the width of the bottom of the

grooves

55c, 56c in the radial direction of the annular body 30) Wc is the width of the outer peripheral side portions 36a-1, 37a-1 of the

first partition walls

36a, 37a. The width dimension Wa of the

grooves

55a, 56a between the inner surface on the inner peripheral side and the inner surfaces of the

annular chambers

33, 34, and the inner peripheral side of the outer peripheral side portions 36b-1, 37b-1 of the

second partition walls

36b, 37b The

groove portions

55b and 56b between the inner surface and the inner surfaces of the

annular chambers

33 and 34 are formed to have substantially the same width Wb.

As described above, the outer peripheral side portions 36c-1 and 37c-1 of the

third partition walls

36c and 37c protrude from the outer peripheral inner walls of the

annular chambers

33 and 34 toward the upper side of the

annular chambers

33 and 34, respectively. The amount is formed to be small. That is, the space between the inner peripheral side inner surfaces of the outer peripheral side portions 36c-1 and 37c-1 of the

third partition walls

36c and 37c and the inner peripheral side inner surfaces of the

annular chambers

33 and 34 is formed to be large. 57c, 58c is formed so as to increase as it goes upward. With this configuration, the outer peripheral side portions 36c-1 and 37c-1 of the

third partition walls

36c and 37c move the liquid that moves to the outer peripheral side by centrifugal force in the process of increasing the rotational speed of the washing and dewatering tub 4. Function to limit.

In particular, the outer peripheral side portions 36c-1 and 37c-1 of the

third partition walls

36c and 37c cause the liquid in the

annular chambers

33 and 34 to increase the rotation of the washing and dewatering tub 4 by the

third partition walls

36c and 37c. It is possible to prevent movement to the outer peripheral side of the

annular chambers

33 and 34 by centrifugal force in the middle. That is, the outer peripheral side portions 36c-1 and 37c-1 of the

third partition walls

36c and 37c are such that the liquid in the

annular chambers

33 and 34 is the outer peripheral side portions 36c-1 and 37c-1 of the

third partition walls

36c and 37c. In other words, the movement of the liquid is controlled so that the amount of liquid in the

annular chambers

33 and 34 is larger than that in the

annular chambers

33 and 34. Has the function of

In addition, as shown in FIG. 2, the

second partition wall

36a, 37a adjacent to each other, that is, between a certain

first partition wall

36a, 37a and the next

first partition wall

36a, 37a, Partition

walls

36b and 37b are disposed, and

third partition walls

36c and 37c are disposed between the next

first partition walls

36a and 37a and the next

first partition walls

36a and 37a. Thereafter, the

first partition walls

36a and 37a, the

second partition walls

36b and 37b, and the

third partition walls

36c and 37c, which are the

partition walls

36 and 37 having a plurality of types of shapes, are provided in the above arrangement.

The arrangement of the

first partition walls

36a, 37a, the

second partition walls

36b, 37b, and the

third partition walls

36c, 37c, which are the

partition walls

36, 37 having a plurality of types of shapes, is not limited to the above arrangement. Depending on the shape of the washing and dewatering tank 4, the material of the liquid in the

annular chambers

33 and 34, the environment in which the washing machine 100 is installed, etc., the liquid in the

annular chambers

33 and 34 can move efficiently and smoothly. Arranged in optimal sequence order and combination.

A predetermined amount of liquid 38 is sealed in the

annular chambers

33 and 34. FIG. 2 shows the liquid 38 in a stopped state of the balancer device 7. The liquid 38 sealed in the

annular chambers

33 and 34 is set to 30 to 70% of the volume of the

annular chambers

33 and 34. The amount of liquid 38 enclosed is set to 30 to 70% of the volume of the

annular chambers

33 and 34, so that the straightening centrifugal force of the balancer device 7 is maximized. In the present embodiment, the sealed amount of the liquid 38 is set to about 55% of the volume of the

annular chambers

33 and 34.

In the present embodiment, the balancer device 7 has an outer diameter of 470 mm and a height of 74 mm. The movement of the liquid 38 in the

annular chambers

33 and 34 is restricted by the

first partition walls

36a and 37a, the

second partition walls

36b and 37b, and the

third partition walls

36c and 37c.

In the balancer device 7 configured as described above, when the washing and dewatering tub 4 equipped with the balancer device 7 rotates, the liquid 38 in the

annular chambers

33 and 34 is a space formed by the

first partition walls

36a and 37a. 57a, 58a and the flow path constituted by the

groove portions

55a, 56a, the flow path constituted by the

spaces

57b, 58b and the

groove portions

55b, 56b formed by the

second partition walls

36b, 37b, and the third partition wall 36c, When the imbalance occurs in the washing / dehydrating tub 4 through the flow path formed by the

spaces

57c, 58c and the

grooves

55c, 56c formed by 37c, the imbalance is removed.

In particular, the flow path formed by the

spaces

57a and 58a and the

grooves

55a and 56a formed by the

first partition walls

36a and 37a is widely formed. Further, a large number of

first partition walls

36 a and 37 a are formed in the annular body 30. With such a configuration, the liquid 38 in the

annular chambers

33 and 34 can be moved more efficiently.

On the other hand, the liquid 38 that moves to the outer peripheral side in the

annular chambers

33 and 34 by the centrifugal force of the rotation of the washing / dehydrating tub 4 is moved to the outer peripheral side by the

second partition walls

36b and 37b and the

third partition walls

36c and 37c. Movement is limited and held at a position where the unbalance is eliminated, and the vibration suppressing effect is maintained. In particular, the movement of the liquid 38 in the state where the rotation of the washing and dewatering tub 4 is increased by the

second partition walls

36b and 37b having the above-described shape and the liquid 38 in the

annular chambers

33 and 34 moves to the outer peripheral side. Great effect. In addition, the

third partition walls

36c and 37c having the shapes described above have the effect of restricting the movement of the liquid 38 in a state in which the liquid 38 moves to the outer peripheral side while the rotation of the washing / dehydrating tub 4 is in the middle of rising. large.

In the following, the vibration amplitude of the washing and dewatering tub when the washing machine 100 to which the balancer device 7 of the present embodiment is attached and the washing machine to which the balancer devices of two comparative examples are respectively attached is dehydrated will be compared. .

FIG. 6 is a cross-sectional view of the

first partition walls

36a and 37a of the balancer device 7 of the present embodiment. The balancer device 7 has a distance H1 = 15 mm between the liquid surface and the upper ends of the inner peripheral portions 36a-2 and 37a-2 of the

first partition walls

36a and 37a (bottom portions of the

grooves

55a and 56a), and in the

annular chambers

33 and 34. Height H2 = 70 mm, the inner diameter D1 of the balancer device 7 = φ404 mm, and the radial width W2 of the annular body 30 = 33 mm. In the balancer device 7 of the present embodiment, H1 / H2 = 0.21.

FIG. 7 is a cross-sectional view of the first partition wall of the balancer device of Comparative Example 1. The balancer device of Comparative Example 1 has a distance H71 = 5 mm between the liquid level and the upper end of the inner peripheral portion of the first partition wall, a height H72 = 70 mm in the

annular chambers

733 and 734, an inner diameter D3 of the balancer device = φ404 mm, and The width W4 in the radial direction of the annular body 730 is set to 33 mm. In the balancer device of Comparative Example 1, H71 / H72 = 0.07.

FIG. 8 is a cross-sectional view of the first partition wall of the balancer device of Comparative Example 2. The balancer device of Comparative Example 2 has a distance H81 = 5 mm between the liquid surface and the upper end of the inner peripheral portion of the first partition wall, a height H82 = 70 mm in the

annular chambers

833 and 834, an inner diameter D5 of the balancer device = φ381 mm, and The width W6 in the radial direction of the annular body 830 is set to 44.5 mm. In the balancer device of Comparative Example 2, H81 / H82 = 0.07.

FIG. 9 is a characteristic diagram showing the amplitude of the washing and dewatering tub 4 by the balancer device 7 of the washing machine 100 of the present embodiment shown in FIG. FIG. 9 is a characteristic diagram showing the amplitude of the washing and dewatering tub by the balancer device of the washing machine of Comparative Example 1 shown in FIG. FIG. 111 is a characteristic diagram showing the amplitude of the washing and dewatering tub by the balancer device of the washing machine of Comparative Example 2 shown in FIG.

In the balancer device of Comparative Example 1 shown in FIG. 7, the inner peripheral side portion of the first partition wall is the inner peripheral side portion 36a-2, 37a- of the first partition wall of the balancer device 7 of the present embodiment shown in FIG. 2 is formed higher than 2 and the flow path of the fluid is narrow. In the balancer device of Comparative Example 1, as shown in FIG. 9, after the start of dehydration, the correction for the imbalance occurring in the washing / dehydrating tub is delayed, and the rotation speed of the washing / dehydrating tub during dehydration is 200 to 300 rpm. However, the liquid cannot move to the opposite side (180 degree delay) from the unbalance, and can only move up to about 120 to 150 degree delay. For this reason, the amplitude of the vibration of the washing and dewatering tank is increased.

In the balancer device of Comparative Example 2 shown in FIG. 8, the distance H1 between the liquid surface and the upper end of the inner peripheral side portion of the first partition wall is formed at the same distance as that of Comparative Example 1, but Comparative Example 1 shown in FIG. Compared to the above, the inner diameter (D5) of the balancer device is configured to be smaller, and the radial width (W6) of the annular body 30 is formed wider. With such a configuration, the fluid passage in Comparative Example 2 is formed wider than the fluid passage in Comparative Example 1. In the balancer device of Comparative Example 2, the liquid moves smoothly after the start of dehydration, and the liquid in the annular body 30 can move to the side opposite to the unbalance (180 degree delay) when the dehydration speed is 200 rpm. As a result, the amplitude of the washing and dewatering tub when the rotational speed is 200 to 300 rpm can be reduced, and the liquid in the annular body 30 can be maintained in the opposite direction to the unbalance in the subsequent dewatering step. .

However, since the inner diameter (D5) of the balancer device of Comparative Example 2 is smaller, the laundry workability is reduced.

The balancer device 7 of the present embodiment shown in FIG. 6 has an inner diameter (D1) larger than that of the balancer device of Comparative Example 2. With such a configuration, the laundry entry / exit workability can be improved as compared with the washing machine using the balancer device of Comparative Example 2.

Further, the balancer device 7 of the present embodiment is formed so that the radial width is narrow, but the distance H1 of the upper end of the inner peripheral side portion of the first partition wall with respect to the liquid surface is set to Comparative Example 1 and Comparative Example 2. Are larger than H71 and H81, and the fluid flow path is wide.

With such a configuration, the balancer device 7 of the present embodiment allows the liquid to move smoothly after the start of dehydration. When the dehydration rotation speed is 200 rpm, the liquid in the annular body 30 is on the opposite side to the unbalance (180 degree delay). Therefore, the amplitude at the rotation speed of 200 to 300 rpm can be reduced, and the liquid in the annular body 30 can be maintained in the reverse direction to the unbalance in the subsequent dehydration process.

If the distance H1 between the liquid surface and the upper ends of the inner peripheral portions 36a-2 and 37a-2 of the

first partition walls

36a and 37a is too large, for example, if H1 is formed to be 20 mm or more, the liquid will be further liquid. However, the liquid tends to move even after the rotation speed of 200 rpm at the time of dehydration, and the liquid cannot be maintained in a state opposite to the unbalance (a 180 degree delay). For this reason, on the contrary, the liquid may be vibrated and the amplitude of the washing and dewatering tank may increase.

Further, the width dimension Wa of the

groove portions

55a and 56a formed by the

first partition walls

36a and 37a, the width dimension Wb of the

groove portions

55b and 56b formed by the

second partition walls

36b and 37b, and the third partition wall 36c, When the widths Wc of the

grooves

55c and 56c formed by 37c are each set to be less than 4 mm, the liquid surface and the upper ends (grooves 55a-2) of the inner peripheral portions 36a-2 and 37a-2 of the

first partition walls

36a and 37a are set. Even when the distance H to the bottom of 56a is 10 to 20 mm, the flow path of the liquid 38 becomes narrow, the liquid 38 cannot move smoothly during dehydration, and the variation in movement of the liquid 38 increases. Therefore, the width dimension Wa of the

groove parts

55a and 56a formed by the

first partition walls

36a and 37a, the width dimension Wb of the

groove parts

55b and 56b formed by the

second partition walls

36b and 37b, and the third partition wall 36c, The width dimension Wc of the

grooves

55c and 56c formed by 37c is preferably 4 mm or more.

In the washing machine 100 according to an example of the embodiment of the present invention, the washing and dewatering tub and the balancer device 7 may have a configuration as described below. Hereinafter, another configuration example of the washing and dewatering tub and the balancer device 7 in the washing machine 100 according to an example of the embodiment of the present invention will be described with reference to FIGS.

FIG. 12 is a perspective view showing a washing and dewatering tub according to another configuration example of the washing machine 100 according to an example of the embodiment of the present invention. FIG. 13 is a plan view of a balancer device 7 according to another configuration example of the washing machine 100 according to the embodiment of the present invention as viewed from above.

The balancer device 7 according to another configuration example of the washing machine 100 of the present embodiment has an outer diameter of φ470 mm and a height of 74 mm. Further, as shown in FIG. 12, the inner peripheral shape of the balancer device 7 is such that the radial width W1 of the annular body 30 above the filter 12 is displaced by 90 degrees from the upper position of the filter 12. It has a shape wider than the radial width W2.

In the balancer device 7 according to another configuration example of the washing machine 100 of the present embodiment, the annular body 30 is set such that the radial width W1 of the upper position of the filter 12 is set to 37 mm. The inner diameter, which is the distance between the positions facing each other by 180 degrees, is set to 396 mm. Further, in the annular body 30, the radial width W2 of the annular body 30 at a position displaced 90 degrees from the position where the filter 12 is disposed is set to 33 mm, and the annular body 30 is displaced 90 degrees from the position where the filter 12 is disposed. The inner diameter, which is the distance between the position and the position that faces 180 degrees, is set to 404 mm.

The annular body 30 is formed such that a portion having a large width in the radial direction has a smaller inner diameter than a portion having a small width in the radial direction. Further, liquid circulation ports (

grooves

55a, 56a, 55b, 56b, 55c, 56c and

spaces

57a, 58a, 57b, 58b, 57c, and the like formed between the

partition walls

36, 37 and the side walls of the

annular chambers

33, 34, The liquid circulation port formed by 58c is formed larger in the liquid circulation port in the annular chamber having the larger radial width than the liquid circulation port in the annular chamber having the smaller radial width. ing. In the annular body 30, an injection port for injecting liquid into the

annular chambers

33 and 34 is formed at a position where the radial width is wide.

The inner circumferential shape of the annular body 30 is such that, when the annular body 30 shown in FIG. The portion of the annular body 30 at the position is a substantially elliptical shape having a long diameter, and the diameter is gradually changed from the position above the filter 12 to a position displaced 90 degrees. Note that the substantially elliptical ellipse is not intended to be a geometrically exact ellipse.

FIG. 14 is a graph showing the amplitude of vibration during dehydration of the washing and dewatering tub 4 of the washing machine 100 according to the embodiment of the present invention. FIG. 15 is a graph showing the amplitude at the time of dewatering of the washing and dewatering tub to which the conventional balancer device shown in FIG. 17 is attached. In the conventional balancer device shown in FIG. 17, the inner peripheral shape of the annular body 543 is circular, the inner diameter is 381 mm, and the width dimension in the radial direction of the annular body 543 is 44.5 mm. FIG. 16 is a graph showing the amplitude at the time of dehydration of the washing and dewatering tub in which the balancer device having a narrow width in the radial direction of the conventional balancer device shown in FIG. 17 is mounted. In the balancer device formed so that the radial width dimension is narrow, the inner peripheral shape of the annular body 543 is circular, the inner diameter is 404 mm, and the radial width dimension of the annular body 543 is 33 mm.

As shown in FIG. 15, the washing / dehydration tank equipped with the conventional balancer device has a slightly higher amplitude at the time of dehydration at 200 to 300 rpm, but has a sufficient vibration suppressing effect. However, since the inner diameter dimension of the annular body 543 is small, there is a problem that it is difficult to take in and out the laundry.

On the other hand, the washing and dewatering tub whose vibration amplitude at the time of dewatering is shown in FIG. 16 includes a conventional balancer device having a narrow radial width. Since the washing and dewatering tub provided with the conventional balancer device formed with a narrow width in the radial direction has a larger inner diameter than the conventional balancer device shown in FIG. 17, the laundry can be easily taken in and out. However, as shown in FIG. 16, in the washing and dewatering tub equipped with the balancer device in which the radial width of the balancer device is narrow, the amplitude at 200 to 300 rpm is increased, and the vibration suppression effect is reduced. To do.

On the other hand, as shown in FIG. 14, in the washing and dewatering tub 4 equipped with the balancer device 7 according to another configuration example of the present embodiment, the vibration amplitude especially at 200 to 300 rpm is reduced and high vibration suppression is achieved. An effect can be obtained.

Generally, in the washing / dehydrating tub 4, the filter 12 protrudes toward the inner surface of the washing / dehydrating tub 4, so that the laundry is caught by the filter 12 and the laundry is likely to be unevenly distributed in the vicinity of the filter 12.

In the balancer device 7 according to another configuration example of the present embodiment, the radial width of the annular body 30 at the upper position of the filter 12 where the laundry tends to be unevenly distributed is displaced by 90 degrees from the upper position of the filter 12. It is comprised so that it may become wider than the width dimension of the radial direction of the annular body 30. FIG. With such a configuration, a larger amount of liquid can move to the portion of the annular body 30 having a wide radial width than the other portions of the annular body 30, and it becomes easy to correct the unbalanced state. . As a result, a large amount of liquid can be moved to the side opposite to the position where the clothes are biased, and in particular, the amplitude at a rotational speed of 200 to 300 rpm can be reduced.

Further, if the radial width of the annular body 30 of the balancer device 7 is narrowed, the balancer device 7 becomes less rigid. Therefore, the amount of deformation of the washing / dehydrating tub 4 during dehydration increases, and the washing / dehydrating tub 4 There is a possibility of being easily rubbed with the outer tub 3. In particular, in the washing / dehydrating tub 4, the weight of the portion where the filter 12 and the filter fixing frame 14 are mounted is heavy, and the deformation amount of the washing / dehydrating tub 4 increases in this portion during dehydration.

The balancer device 7 according to another configuration example of the present embodiment is formed so that the radial width of the annular body 30 in the upper part of the filter 12 is wider than the width in the other part of the annular body 30. Further, the rigidity of the balancer device 7 in the portion where the deformation amount of the washing / dehydrating tub 4 is large can be increased. Moreover, the rigidity variation in the washing / dehydrating tub 4 can be suppressed, and deformation of the washing / dehydrating tub 4 during dehydration can be suppressed.

As described above, in the washing machine 100 of the present embodiment, even when the balancer device 7 according to another configuration example of the present embodiment is used, the size of the washing and dewatering tub 4 of the washing machine 100 is not changed. It is possible to obtain a washing machine 100 that can obtain a high vibration suppressing effect and that can easily take out clothes.

As described above, the washing machine 100 according to the example of the embodiment of the present invention includes the housing 1, the outer tub 3 supported in the housing 1, and the laundry disposed rotatably in the outer tub 3. A cum dewatering tub 4 and a balancer device 7 disposed on the upper part of the washing and dewatering tub 4 are provided.

In the washing machine 100 according to the embodiment of the present invention, the balancer device 7 has an annular body 30. The annular body 30 has

annular chambers

33 and 34 in which liquid is sealed, and a partition wall that forms a liquid flow path inside the

annular chambers

33 and 34 inside the

annular chambers

33 and 34. 36 and 37 are arranged. Each of the

partition walls

36, 37 has a plurality of types of shapes, and the partition walls 36, 37 (36a, 37a, 36b, 37b, 36c, 37c) having a plurality of types of shapes are arranged in a predetermined arrangement in the

annular chamber

33, 34.

With such a configuration, the movement of the liquid that moves to the outer peripheral side in the

annular chambers

33 and 34 by the rotation of the washing and dehydrating tub 4 can be restricted. The liquid in the

annular chambers

33 and 34 can efficiently move to a position where the unbalance is eliminated. Thereby, while being able to acquire the high vibration suppression effect, without changing the size of a washing and dewatering tank, the taking-out workability | operativity of clothing can be improved.

Further, in the washing machine 100 according to the embodiment of the present invention, the

partition walls

36 and 37 having a plurality of types of shapes form a first partition that forms a liquid flow path above and inside the

annular chambers

33 and 34. You may have the

walls

36a and 37a and the

2nd partition walls

36b and 37b which form the inner surface of the outer peripheral side in the

annular chambers

33 and 34. FIG. Further, the predetermined arrangement of the

partition walls

36 and 37 having a plurality of types of shapes includes an arrangement in which at least one

second partition wall

36b and 37b is provided between the two

first partition walls

36a and 37a. It may be. With such a configuration, when the liquid moves to the outer peripheral side in the

annular chambers

33 and 34 by the centrifugal force in the rotation state of the washing and dewatering tub 4, the outer peripheral side portion (the annular chamber 33) of the second partition walls 36b and 37b. , 34 in contact with the inner surface on the outer peripheral side) 36b-1, 37b-1 functions so as to limit the movement of the liquid, so that the imbalance can be corrected efficiently. Thereby, while being able to obtain a high vibration suppression effect without changing the size of the washing and dewatering tub, it is possible to improve workability for taking out clothes and the like.

partition walls

36 and 37 having a plurality of types of shapes form the

first partition walls

36a and 37a that form a liquid flow path above the

annular chambers

33 and 34. And

third partition walls

36c and 37c having a shape in which the amount of protrusion from the outer peripheral side in the

annular chambers

33 and 34 increases as it goes below the

annular chambers

33 and 34. The predetermined arrangement may include an arrangement in which at least one

third partition wall

36c, 37c is disposed between the two

first partition walls

36a, 37a. With such a configuration, the

third partition walls

36c and 37c function so as to limit the movement of the liquid that moves to the outer peripheral side by centrifugal force in the process in which the rotation speed of the washing and dewatering tub 4 is increased. Unbalance can be corrected. Thereby, while being able to obtain a high vibration suppression effect without changing the size of the washing and dewatering tub, it is possible to improve workability for taking out clothes and the like.

In addition, in the washing machine 100 according to the embodiment of the present invention, the partition walls 36 and 37 (36a, 37a, 36b, 37b, 36c, and 37c) having a plurality of types of shapes are respectively provided on the inner peripheral side portions (the annular chamber 33, 34 a portion in contact with the inner surface on the inner peripheral side) 34a-2, 37a-2, 36b-2, 37b-2, 36c-2, 37c-2 are formed at substantially the same height. Also good. With such a configuration, the liquid in the

annular chambers

33 and 34 can move smoothly, so that the imbalance in the washing and dewatering tub 4 can be eliminated more efficiently.

Further, in the washing machine 100 according to the embodiment of the present invention, the partition walls 36 and 37 (36a, 37a, 36b, 37b, 36c, and 37c) having a plurality of shapes are arranged on the outer peripheral side (in the annular chambers 33 and 34). 36a-1, 37a-1, 36b-1, 37b-1, 36c-1, 37c-1 are respectively connected to the inner peripheral parts 36a-2, 37a-2, 36b-. 2, 37b-2, 36c-2, 37c-2 may be formed higher. Further, the inner surfaces of the outer peripheral side portions 36a-1, 37a-1, 36b-1, 37b-1, 36c-1, 37c-1 in the

annular chambers

33, 34 and the inner surfaces of the

annular chambers

33, 34

Grooves

55a, 56a, 55b, 56b, 55c, and 56c may be formed between the inner surface and the inner surface. Furthermore, the widths of the

grooves

55a, 56a, 55b, 56b, 55c, and 56c formed by the partition walls 36 and 37 (36a, 37a, 36b, 37b, 36c, and 37c) having a plurality of types of shapes are substantially the same. You may form in the dimension. With such a configuration, when an imbalance occurs in the washing / dehydrating tub 4, the liquid can efficiently move to a position where the imbalance is eliminated, and high vibration is achieved without changing the size of the washing / dehydrating tub. A suppression effect can be obtained, and the workability of taking out can be improved.

Moreover, in the washing machine 100 according to the embodiment of the present invention, the balancer device 7 is configured such that the annular body 30 has a substantially elliptical shape in which the inner peripheral shape has a minor axis and a major axis when viewed from above. Also good. With such a configuration, the inner diameter of the annular body 30 can be increased without reducing the vibration suppressing effect without changing the size of the washing and dewatering tub of the washing machine. Thereby, a high vibration suppressing effect can be obtained without changing the size of the washing and dewatering tub of the washing machine, and a washing machine with improved clothes takeout workability can be provided.

Further, in the washing machine 100 according to the embodiment of the present invention, the filter 12 for removing lint is disposed in the washing and dewatering tub 4, and the annular body 30 is positioned above the position where the filter 12 is disposed. The portion in which the width in the radial direction is wider than the radial width in the other portion of the annular body 30 (for example, a position displaced 90 degrees from the position above the position where the filter 12 is disposed). It may be configured to have. With such a configuration, a large amount of liquid can move to the part where the radial width of the annular body 30 is formed wide, and unbalance due to uneven distribution of the laundry in the washing and dewatering tub 4 is corrected. It becomes easy. In addition, the washing / dehydrating tub 4 is heavier in the portion where the filter 12 and the filter fixing frame 14 are mounted, and the amount of deformation of the washing / dehydrating tub 4 during this dehydration is increased. There is a possibility that the outer tank 3 is easily rubbed. In this regard, the balancer device 7 in the washing machine 100 according to the embodiment of the present invention is configured such that the radial width dimension of the annular body 30 above the filter 12 is displaced 90 degrees from the upper position of the filter 12. By being formed wider than the width dimension in the radial direction of 30, the rigidity of the balancer device 7 in the portion where the deformation amount of the washing / dehydrating tub 4 is large can be increased, and the rigidity variation in the washing / dehydrating tub 4 can be reduced. Can be suppressed. Thereby, the deformation of the washing / dehydrating tub 4 at the time of dehydration can be suppressed, a washing machine having a high vibration suppressing effect can be provided, and a washing machine with improved clothes take-out workability can be provided.

Moreover, in the washing machine 100 according to the embodiment of the present invention, the annular body 30 may be provided with a liquid inlet into the annular body 30 in a wide portion where the radial width dimension is wide. . With such a configuration, the influence on the liquid flow path width due to the provision of the liquid inlet (an effect of narrowing the liquid flow path width) is reduced, so that the liquid easily flows in the annular body 30. Thereby, it is possible to provide a washing machine that has a high vibration suppressing effect without changing the size of the washing / dehydrating tub of the washing machine and has less rigidity variation in the washing / dehydrating tub 4.

As described above, the present invention can provide a washing machine that can obtain a high vibration suppressing effect without changing the size of the washing / dehydrating tub of the washing machine and has improved workability for taking out clothes. Therefore, it can be widely used in various home and business washing machines and washing / drying machines.

DESCRIPTION OF SYMBOLS 1 Housing | casing 3 Outer tub 4 Washing / dehydration tub 4a Water flow hole 5 Shaft 6 Pulsator 7 Balancer device 8 Motor (drive means)
DESCRIPTION OF SYMBOLS 9 Clutch 10 Inclined surface 11 Protruding part for stirring 12 Filter 13 Outer tank cover 14 Filter fixing frame 15 Drain hose 16 Frame base 17 Water supply valve 18 Detergent storage part 19 Operation part 20 Detergent dissolving part 21 Water supply member 22 Upper frame body 23 Outer cover 24 support member 30 annular body 31, 41 upper annular case 32, 42 lower

annular case

33, 34 annular chamber 35

partition wall

36, 37

partition wall

36a, 37a

first partition wall

36b, 37b

second partition wall

36c, 37c third Partition wall 36a-1, 37a-1 Outer peripheral part (first partition wall)
36b-1, 37b-1 Outer peripheral part (second partition wall)
36c-1, 37c-1 Outer peripheral part (third partition wall)
36a-2, 37a-2 Inner peripheral part (first partition wall)
36b-2, 37b-2 Inner peripheral part (second partition wall)
36c-2, 37c-2 Inner peripheral side (third partition wall)
38 Liquid 55a, 56a, 55b, 56b, 55c,

56c Groove

57a, 58a, 57b, 58b, 57c, 58c Space

Claims

A washing and dewatering tub, and a balancer device having an annular body disposed at an upper portion of the washing and dewatering tub, the annular body having an annular chamber in which a liquid is enclosed; Is provided with a partition wall, and the partition wall forms a flow path for the liquid on an inner peripheral side of the annular chamber, the partition wall has a plurality of types of shapes, and the plurality of types of shapes A washing machine in which the partition wall is disposed in the annular chamber in a predetermined arrangement.
The partition walls having the plurality of types of shapes include a first partition wall that forms a liquid flow path above and inside the annular chamber, and a second partition that forms an inner surface on the outer periphery side of the annular chamber. The washing machine according to claim 1, wherein the predetermined arrangement includes an arrangement in which the second partition wall is disposed between the two first partition walls.
The partition wall having the plurality of types of shapes includes the first partition wall that forms the flow path of the liquid above the annular chamber, and the outer periphery of the annular chamber as it goes down the annular chamber. A third partition wall having a shape in which the amount of protrusion from the inner wall on the side increases, and the predetermined arrangement includes an arrangement in which the third partition wall is disposed between two of the first partition walls. The washing machine according to claim 1 or 2.
4. The partition wall having the plurality of types of shapes, wherein the inner peripheral side portion in contact with the inner peripheral inner surface of the annular chamber is formed to have substantially the same height. The washing machine according to Item 1.
The partition wall having the plurality of shapes is formed such that an outer peripheral side portion in contact with the inner surface on the outer peripheral side in the annular chamber is higher than the inner peripheral portion, and the inner side of the outer peripheral side portion in the annular chamber is formed. The groove portion is formed between the inner surface on the circumferential side and the inner surface on the inner circumferential side in the annular chamber, and the width of the bottom portion of the groove portion is formed to have substantially the same dimension. A washing machine according to claim 1.
The washing machine according to any one of claims 1 to 5, wherein the annular body is configured in an elliptical shape having an inner circumferential shape having a minor axis and a major axis in plan view.
A filter for removing lint is disposed in the washing and dewatering tub, and the annular body has a radial width at a position above the position where the filter is disposed at another position of the annular body. The washing machine according to any one of claims 1 to 6, wherein the washing machine has a portion formed wider than the width.
The washing machine according to claim 7, wherein the annular body is provided with the liquid inlet at a portion where the radial width is wide.