WO2016207080A1 - Washing machine and balance ring for washing machine - Google Patents
Washing machine and balance ring for washing machine Download PDFInfo
- Publication number
- WO2016207080A1 WO2016207080A1 PCT/EP2016/064070 EP2016064070W WO2016207080A1 WO 2016207080 A1 WO2016207080 A1 WO 2016207080A1 EP 2016064070 W EP2016064070 W EP 2016064070W WO 2016207080 A1 WO2016207080 A1 WO 2016207080A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- channel
- wall
- spheres
- balance ring
- washing machine
- Prior art date
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Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
- D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
- D06F37/225—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
Definitions
- the present invention relates to a washing machine and a balance mechanism for a washing machine.
- a washing machine usually has a drum that can be driven by a motor to rotate. Washing and dewatering operations are performed on clothes in the drum. To make the drum tend to balance during a rotation process, and to reduce vibration and noise that are generated due to unbalanced rotation of the drum, a balance ring may be installed on the drum along a circumference of the drum.
- a balance ring includes an annular channel and several spheres that are contained in the channel and are reliable along the channel. During a dewatering process with the drum rotating at a high speed, the spheres automatically adjust distribution positions according to an unbalanced distribution state of the clothes in the drum, so as to make the whole drum achieve or tend to balance.
- a viscous fluid may be injected into the channel, kinetic energy of the collision of the spheres are absorbed by using viscous drag, so as to reduce the noise.
- a viscous fluid may be injected into the channel, kinetic energy of the collision of the spheres are absorbed by using viscous drag, so as to reduce the noise.
- the spheres are propelled by a viscous fluid, so as to rise against gravity.
- the spheres may collide, and noise may be generated.
- One objective of the present invention is to provide an improved balance ring for a washing machine, so as to reduce impact noise of spheres in the balance ring during a washing process.
- a technical solution adopted by the present inven- tion is: a balance ring for a washing machine, including: an annular channel, where a viscous fluid and a plurality of spheres reliable along the channel are provided in the channel, and a radial direction of an inner wall of the channel is greater than an axial width thereof.
- the radial width of the inner wall of the annular channel is greater than the axial width. Therefore, when the annual channel is axially horizontally or obliquely installed on a washing machine, due to the impact of gravity, the spheres are located at the bottom of the annular channel and are located on a radial outer side of the inner wall of the channel.
- the rotation of the drum is insufficient for driving the spheres to pass the highest point of the channel.
- the spheres and a viscous fluid move downward due to the impact of gravity, and with the impact of a viscous force, the viscous fluid moves upward with the rotation of the channel.
- the viscous fluid may pass from surrounding areas of the spheres, and in particular, from the radial inner side of the inner wall of the channel.
- the low rotation speed is a low rotation speed with respect to a rotation speed suitable for a dewatering process.
- a radial gap between each of the spheres and the annular channel is two to four times of an axial gap therebetween.
- An excessive small radial width/radial gap hinders the flow of the viscous fluid, and therefore, the viscous fluid still propels the spheres.
- an excessive great radial width/radial gap results in a waste of space and materials.
- the radial width of the inner wall of the annular channel is arranged to allow, when the annular channel rotates with a drum of the washing machine at a rotation speed suitable for a washing process or a rinsing process, most of the viscous fluid to flow through a side, facing a central axis of the channel, of each of the spheres.
- the inner wall of the annular channel includes a first wall far away from a central axis of the channel, a second wall opposite to the first wall and close to the central axis of the channel, and two side walls for connecting the first wall and the second wall; at least one of the side walls has a blocking portion, so as to divide space in the channel into an abaxial portion far away from the central axis of the channel and an adaxial portion close to the central axis of the channel; the abaxial portion is in fluid communication with the adaxial portion; and the spheres are blocked by the blocking portion, and therefore are located in the abaxial portion.
- the blocking portion limits the spheres in the abaxial portion so as to avoid noise generated by collision resul- ted from radial movement of the spheres during the rising processes due to a relatively large radial distance of the channel.
- the blocking portion includes a rib extending along a circumference of the side wall of the channel.
- the distance between the rib and the first wall is slightly greater than the diameters of the spheres.
- the distance between the rib and the first wall is close to the distance between the two side walls.
- the present invention further provides a washing machine, including a drum that can be driven by a motor to rotate, where a circumference of the drum is provided with the foregoing balance ring.
- a rotation shaft of the drum is horizontally or obliquely disposed.
- FIG. 1 is a schematic diagram of a washing machine with a balance ring
- FIG. 2 is a diagram of a radial section of the balance ring, and the position of the section is at the bottom of the balance ring in FIG. 1.
- a washing machine 1 includes a case body 2, and a drum system 5 that is suspended in the case body 2 by using an elastic suspension unit 3 and a damping and supporting unit 4.
- the drum system 5 includes a tub 6 that is connected to the elastic suspension unit 3 and the damping and supporting unit 4, a drum 7 that is roughly coaxi- ally installed in the tub 6, and a motor 8 for driving the drum 7 to perform rotation motion.
- a rotation shaft 13 of the drum 7 is roughly horizontal.
- Balance rings 10 are separately installed, along a circumference of a wall of the drum 7, at positions close to axial end portions of two sides of the drum 7.
- the balance rings 10 are coaxially disposed with the drum 7.
- a balance ring 10 may be disposed at one end of a drum 7.
- a balance ring 10 includes an annular channel 1 1 , and viscous oil and a plurality of spheres 12 reliable along the channel that are contained in the channel 1 1.
- the spheres 12 are arranged as a single row in the channel 1 1 , and the diameters of spheres 12 are slightly less than the inner diameter of the channel 1 1 .
- the radial width W1 of the inner wall of the annular channel 1 1 is greater than the axial width W2.
- the radial width W1 of the inner wall of the annular channel 1 1 is arranged to allow, when the annular channel 1 1 rotates with the drum 7 at a rotation speed suitable for a washing process or a rinsing process, most of the viscous fluid to flow through a side, facing a central axis 13' of the channel, of each of the spheres 12.
- a relatively appropriate arrangement is that a radial gap between each sphere 12 and the annular channel 1 1 is two to four times of an axial gap therebetween.
- the inner wall of the annular channel 1 1 includes a first wall 1 10a far away from the central axis 13' of the channel, a second wall 1 10b opposite to the first wall 1 10a and close to the central axis 13' of the channel, and two side walls 1 10c for connecting the first wall 1 10a and the second wall 1 10b.
- one of the two side walls 1 10c has a blocking portion 14, so as to divide space in the channel 1 1 into an abaxial portion 1 1 a far away from the central axis 13' of the channel and an adaxial portion 1 1 b close to the central axis 13' of the channel.
- the abaxial portion 1 1 a is in fluid communication with the adaxial portion 1 1 b.
- the spheres 12 are blocked by the blocking portion 14, and therefore are located in the abaxial portion 1 1 a.
- the blocking portion 14 is a rib 14 extending along a circumference of the side wall 1 10c of the channel.
- the distance between the rib 14 and the first wall 1 10a is slightly greater than the diameters of the spheres 12, and the distance between the rib 14 and the first wall 1 10a is close to the distance between the two side walls 1 10c.
Abstract
Balance ring (2) for a washing machine (1) and washing machine provided with same, wherein said balance ring (2) includes an annular channel (11) in which a viscous fluid and a plurality of spheres (12) rollable along the annular channel (11) are provided and, wherein a radial width (W1) of an inner wall of the annular channel (11) is greater than an axial width (W2) thereof. The inner wall of the annular channel (11) further comprises a first wall (110a) far away from a central axis (13') of the channel (11), a second wall (110b) opposite to the first wall (110a) and close to the central axis (13') of the channel (11), and two side walls (110c) connecting said first wall (110a) to said second wall (110b); at least one of the side walls (110c) is provided with a blocking portion (14), so as to divide the channel (11) into two portions (11a, 11b) in fluid communication with each other.
Description
WASHING MACHINE AND BALANCE RING FOR WASHING
MACHINE
The present invention relates to a washing machine and a balance mechanism for a washing machine.
A washing machine usually has a drum that can be driven by a motor to rotate. Washing and dewatering operations are performed on clothes in the drum. To make the drum tend to balance during a rotation process, and to reduce vibration and noise that are generated due to unbalanced rotation of the drum, a balance ring may be installed on the drum along a circumference of the drum. A balance ring includes an annular channel and several spheres that are contained in the channel and are reliable along the channel. During a dewatering process with the drum rotating at a high speed, the spheres automatically adjust distribution positions according to an unbalanced distribution state of the clothes in the drum, so as to make the whole drum achieve or tend to balance. To reduce noise that is generated from mutual collision of the spheres before the spheres reach balance, a viscous fluid may be injected into the channel, kinetic energy of the collision of the spheres are absorbed by using viscous drag, so as to reduce the noise. However, during a washing phase, when a drum rotates at a relatively low speed, the spheres are propelled by a viscous fluid, so as to rise against gravity. Moreover, during rising processes of the spheres, due to a speed difference between the spheres, the spheres may collide, and noise may be generated. One objective of the present invention is to provide an improved balance ring for a washing machine, so as to reduce impact noise of spheres in the balance ring during a washing process.
With regard to the foregoing objective, a technical solution adopted by the present inven- tion is: a balance ring for a washing machine, including: an annular channel, where a viscous fluid and a plurality of spheres reliable along the channel are provided in the channel, and a radial direction of an inner wall of the channel is greater than an axial width thereof. The radial width of the inner wall of the annular channel is greater than the axial
width. Therefore, when the annual channel is axially horizontally or obliquely installed on a washing machine, due to the impact of gravity, the spheres are located at the bottom of the annular channel and are located on a radial outer side of the inner wall of the channel. When a drum of the washing machine at which the balance ring is installed starts to rotate at a low speed, the rotation of the drum is insufficient for driving the spheres to pass the highest point of the channel. The spheres and a viscous fluid move downward due to the impact of gravity, and with the impact of a viscous force, the viscous fluid moves upward with the rotation of the channel. The viscous fluid may pass from surrounding areas of the spheres, and in particular, from the radial inner side of the inner wall of the channel. Therefore, when the spheres move downward, a force applied by the viscous fluid to the spheres is insufficient for driving the spheres to move upward, so as to avoid impact noise generated by a process of continuous rising to the highest point of the channel and subsequent falling of the spheres during the low-rotation-speed washing process of the washing machine. The low rotation speed is a low rotation speed with respect to a rotation speed suitable for a dewatering process. When the drum of the washing machine performs dewatering by rotating at a high speed, the viscous fluid is subjected to a relatively great centrifugal force and therefore is adsorbed on the radial outer side of the inner wall of the channel, and propels the spheres to move against the gravity, so as to play a balance function.
As one of the optional implementation manners, a radial gap between each of the spheres and the annular channel is two to four times of an axial gap therebetween. An excessive small radial width/radial gap hinders the flow of the viscous fluid, and therefore, the viscous fluid still propels the spheres. However, an excessive great radial width/radial gap results in a waste of space and materials.
As one of the optional implementation manners, the radial width of the inner wall of the annular channel is arranged to allow, when the annular channel rotates with a drum of the washing machine at a rotation speed suitable for a washing process or a rinsing process, most of the viscous fluid to flow through a side, facing a central axis of the channel, of each of the spheres.
As one of the optional implementation manners, the inner wall of the annular channel includes a first wall far away from a central axis of the channel, a second wall opposite to the first wall and close to the central axis of the channel, and two side walls for connecting the first wall and the second wall; at least one of the side walls has a blocking portion, so as to divide space in the channel into an abaxial portion far away from the central axis of the channel and an adaxial portion close to the central axis of the channel; the abaxial portion is in fluid communication with the adaxial portion; and the spheres are blocked by the blocking portion, and therefore are located in the abaxial portion. The blocking portion limits the spheres in the abaxial portion so as to avoid noise generated by collision resul- ted from radial movement of the spheres during the rising processes due to a relatively large radial distance of the channel. As one of the optional implementation manners, the blocking portion includes a rib extending along a circumference of the side wall of the channel. As one of the optional implementation manners, the distance between the rib and the first wall is slightly greater than the diameters of the spheres. By means of such an arrangement, the spheres can roll between the rib and the first wall in a relatively free manner.
As one of the optional implementation manners, the distance between the rib and the first wall is close to the distance between the two side walls.
The present invention further provides a washing machine, including a drum that can be driven by a motor to rotate, where a circumference of the drum is provided with the foregoing balance ring.
Preferably, a rotation shaft of the drum is horizontally or obliquely disposed.
The present invention is further described below with reference to accompany drawings. The disclosure will become more fully understood from the detailed description given herein below for illustration only, and thus are not limitative of the disclosure, and wherein:
FIG. 1 is a schematic diagram of a washing machine with a balance ring; and
FIG. 2 is a diagram of a radial section of the balance ring, and the position of the section is at the bottom of the balance ring in FIG. 1.
As shown in FIG. 1 , a washing machine 1 includes a case body 2, and a drum system 5 that is suspended in the case body 2 by using an elastic suspension unit 3 and a damping and supporting unit 4. The drum system 5 includes a tub 6 that is connected to the elastic suspension unit 3 and the damping and supporting unit 4, a drum 7 that is roughly coaxi- ally installed in the tub 6, and a motor 8 for driving the drum 7 to perform rotation motion. A rotation shaft 13 of the drum 7 is roughly horizontal.
Balance rings 10 are separately installed, along a circumference of a wall of the drum 7, at positions close to axial end portions of two sides of the drum 7. The balance rings 10 are coaxially disposed with the drum 7. Alternatively, in other alternative implementation manners, a balance ring 10 may be disposed at one end of a drum 7.
As shown in FIG. 2, a balance ring 10 includes an annular channel 1 1 , and viscous oil and a plurality of spheres 12 reliable along the channel that are contained in the channel 1 1. The spheres 12 are arranged as a single row in the channel 1 1 , and the diameters of spheres 12 are slightly less than the inner diameter of the channel 1 1 .
The radial width W1 of the inner wall of the annular channel 1 1 is greater than the axial width W2. In addition, the radial width W1 of the inner wall of the annular channel 1 1 is arranged to allow, when the annular channel 1 1 rotates with the drum 7 at a rotation speed suitable for a washing process or a rinsing process, most of the viscous fluid to flow through a side, facing a central axis 13' of the channel, of each of the spheres 12. A relatively appropriate arrangement is that a radial gap between each sphere 12 and the annular channel 1 1 is two to four times of an axial gap therebetween.
The inner wall of the annular channel 1 1 includes a first wall 1 10a far away from the central axis 13' of the channel, a second wall 1 10b opposite to the first wall 1 10a and close to the central axis 13' of the channel, and two side walls 1 10c for connecting the first wall 1 10a and the second wall 1 10b. In order to avoid noise generated by collision resulted
from radial movement of the spheres 12 during the rising processes due to a relatively large radial width of the channel 1 1 , one of the two side walls 1 10c has a blocking portion 14, so as to divide space in the channel 1 1 into an abaxial portion 1 1 a far away from the central axis 13' of the channel and an adaxial portion 1 1 b close to the central axis 13' of the channel. The abaxial portion 1 1 a is in fluid communication with the adaxial portion 1 1 b. The spheres 12 are blocked by the blocking portion 14, and therefore are located in the abaxial portion 1 1 a.
The blocking portion 14 is a rib 14 extending along a circumference of the side wall 1 10c of the channel. The distance between the rib 14 and the first wall 1 10a is slightly greater than the diameters of the spheres 12, and the distance between the rib 14 and the first wall 1 10a is close to the distance between the two side walls 1 10c.
Specific implementation manners described in the foregoing and shown in the accompany drawings are merely used to illustrate the present invention, but are not all of the present invention. Any variation to the present invention made by a person of ordinary skill in the art within the scope of the basic technical thought of the present invention falls within the protection scope of the present invention.
REFERENCE NUMERALS
1 Washing machine
2 Case body
3 Suspension unit
4 Supporting unit
5 Drum system
6 Tub
7 Drum
8 Motor
10 Balance ring
11 Annular channel
11a Abaxial portion
11b Adaxial portion
12 Sphere
13 Central axis
13' Central axis
14 Blocking portion
110a First Wall
110b Second wall
110c Side wall
W1 Radial Width of the annular channel
W2 Axial width of the annular channel
Claims
A balance ring (2) for a washing machine (1 ), comprising: an annular channel (1 1 ), wherein a viscous fluid and a plurality of spheres (12) rollable along the channel (1 1 ) are provided in the channel (1 1 ), characterized in that: a radial width (W1 ) of an inner wall of the annular channel (1 1 ) is greater than an axial width (W2) thereof.
The balance ring (2) according to claim 1 , characterized in that:
a radial gap between each of the spheres (12) and the annular channel (1 1 ) is two to four times of an axial gap therebetween.
The balance ring (2) according to any preceding claim, characterized in that:
the radial width (W1 ) of the inner wall of the annular channel (1 1 ) is arranged to allow, when the annular channel (1 1 ) rotates with a drum (7) of the washing machine (1 ) at a rotation speed suitable for a washing process or a rinsing process, most of the viscous fluid to flow through a side facing a central axis (13') of the channel (1 ), of each of the spheres (12).
The balance ring (2) according to claim any preceding claim, characterized in that: the inner wall of the annular channel (1 1 ) comprises a first wall (1 10a) far away from a central axis (13') of the channel (1 1 ), a second wall (1 10b) opposite to the first wall (1 10a) and close to the central axis (13') of the channel (1 1 ), and two side walls (1 10c) connecting the first wall (1 10a) and the second wall (1 10b); at least one of the side walls (1 10c) has a blocking portion (14), so as to divide space in the channel (1 1 ) into an abaxial portion (1 1 a) far away from the central axis (13') of the channel (1 1 ) and an adaxial portion (1 1 b) close to the central axis (13') of the channel (1 1 ); the abaxial portion (1 1 a) is in fluid communication with the adaxial portion (1 1 b); and the spheres (12) are blocked by the blocking portion (14), and therefore are located in the abaxial portion (1 1 a).
5. The balance ring (2) according to claim 4, characterized in that:
the blocking portion (14) comprises a rib (14) extending along a circumference of the side wall (1 10c) of the channel.
6. The balance ring (2) according to claim 5, characterized in that:
the distance between the rib (14) and the first wall (1 10a) is slightly greater than the diameters of the spheres (12).
7. The balance ring according to one of claims 5 and 6, characterized in that:
the distance between the rib (14) and the first wall (1 10a) is close to the distance between the two side walls (1 10c).
8. A washing machine (1 ), comprising: a drum (7) that can be driven by a motor (8) to rotate, characterized in that:
a circumference of the drum (7) is provided with the balance ring (10) according to any one of the preceding claims.
9. The washing machine (1 ) according to claim 8, characterized in that:
a rotation shaft (13) of the drum (7) is horizontally or obliquely disposed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510354693.9A CN106319854B (en) | 2015-06-24 | 2015-06-24 | Washing machine and balance ring for washing machine |
| CN201510354693.9 | 2015-06-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016207080A1 true WO2016207080A1 (en) | 2016-12-29 |
Family
ID=56321901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2016/064070 WO2016207080A1 (en) | 2015-06-24 | 2016-06-17 | Washing machine and balance ring for washing machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106319854B (en) |
| WO (1) | WO2016207080A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109402957A (en) * | 2018-12-29 | 2019-03-01 | 无锡信昌机械科技有限公司 | Ball type washing machine balancing ring structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58137638A (en) * | 1982-02-09 | 1983-08-16 | Toshiba Corp | Balancer for use in centrifugal rotary machine |
| WO1999010583A1 (en) * | 1997-08-21 | 1999-03-04 | Eti Technologies Inc. | Balancing device for use on washing machines |
| DE102008031106A1 (en) * | 2008-07-01 | 2010-01-07 | Schaeffler Kg | Device for self-balancing |
| WO2015011888A1 (en) * | 2013-07-24 | 2015-01-29 | パナソニックＩｐマネジメント株式会社 | Drum-type washing machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2871599Y (en) * | 2006-02-17 | 2007-02-21 | 熊泽良 | Balancer of centrifugal drying drum |
| CN101962901B (en) * | 2009-07-22 | 2014-01-08 | 海尔集团公司 | Gimbal device of rolling drum-type washing machine |
| CN204370184U (en) * | 2014-11-25 | 2015-06-03 | 青岛海尔洗衣机有限公司 | Use in washing machine gimbal and washing machine |
-
2015
- 2015-06-24 CN CN201510354693.9A patent/CN106319854B/en active Active
-
2016
- 2016-06-17 WO PCT/EP2016/064070 patent/WO2016207080A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58137638A (en) * | 1982-02-09 | 1983-08-16 | Toshiba Corp | Balancer for use in centrifugal rotary machine |
| WO1999010583A1 (en) * | 1997-08-21 | 1999-03-04 | Eti Technologies Inc. | Balancing device for use on washing machines |
| DE102008031106A1 (en) * | 2008-07-01 | 2010-01-07 | Schaeffler Kg | Device for self-balancing |
| WO2015011888A1 (en) * | 2013-07-24 | 2015-01-29 | パナソニックＩｐマネジメント株式会社 | Drum-type washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106319854A (en) | 2017-01-11 |
| CN106319854B (en) | 2023-02-24 |
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