CN1323208C

CN1323208C - Washing machine

Info

Publication number: CN1323208C
Application number: CNB200410033568XA
Authority: CN
Inventors: 寺井谦治; 藤井裕幸; 大村优子
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2003-04-11
Filing date: 2004-04-06
Publication date: 2007-06-27
Anticipated expiration: 2024-04-06
Also published as: CN2778854Y; CN1536129A; JP4007243B2; KR20040089523A; TW200420786A; TWI252884B; KR100600184B1; JP2004313233A

Abstract

To secure the higher washing capacity for reducing uneven washing by a method wherein the bubbles are generated from the dissolved washing solution and gathered into a bubble chamber and pumped up to be splashed to the washing within the inner tub from above in a washing machine which exhausts the bubbles from above the washing. The inner tub 2 holding the washing is rotatably housed in an outer tub 1 and is driven to rotate with a motor 9. A bubble chamber 14 is formed on the internal surface of the outer tub 1. The bubbles are generated in the washing solution between the inner tub 2 and the outer tub 1 with the rotation of the inner tub 2, gathered into the bubble chamber 14 generated at the upper part of the washing solution and pumped up to be exhausted into the inner tub 2 from above.

Description

Washing machine

Technical field

The present invention relates to a kind of washing machine that washs by top ejection foam from washings.

Background technology

In representative existing washing machine, generally wash by the agitator that is called impeller is rotated, below the formation of this washing machine is described with reference to Fig. 9 earlier.

As shown in Figure 9, the inside of outer bucket 30 is provided with bucket 32 in double dehydration barrel of laundry or the title, and the bottom of interior bucket 32 is provided with rotation agitator 31 freely, and is suspended on the washing machine shell 34 by hanging excellent 33.Motor 35 is held concurrently by V belt 36 and reducing gear, and clutch 37 drives agitator 31 or the double dehydration barrel 32 of laundry is rotated.Cleaning solution in draining valve 38 is used to discharge in the bucket 32,39 of water intaking valves are used for water inlet in the inside bucket 32.

The top of the double dehydration barrel 32 of laundry is provided with and is used to alleviate the fluid balance ring 40 of vibration when dehydration, and the top of the double dehydration barrel 32 of laundry is provided with lid 41.A succession of operating process such as washing, rinsing, dehydration (specifically can open 2001-37826 number with reference to for example Japanese patent gazette spy) are finished in the operation of control device 42 control motors 35, draining valve 38, water intaking valve 39 etc. successively.

The following describes the operational circumstances in the above-mentioned formation.Toward the double dehydration barrel 32 interior washing powder that drop into washings and ormal weight of laundry, start washing operation then earlier.Control device 42 control water intaking valves 39 add the water of ormal weight in dehydration barrel 32 is held concurrently in laundry, rotated by control device 42 control motors 35 thereafter, drive agitator 31.Along with the rotation of agitator 31, washings and water in the double dehydration barrel 32 of laundry are stirred; By carrying out such stirring, washing powder dissolves inchmeal, becomes cleaning solution, and the dirt on the washings is had an effect.

But in having the washing machine of above-mentioned formation, the mechanical force during just by the washings in the double dehydration barrel 32 of agitator 31 stirring laundries is guaranteed the ability of cleaning.Though mechanical force is delivered to the washings that is in double dehydration barrel 32 bottoms of laundry easily, makes it to obtain higher clean effect, mechanical force is difficult to pass to the washings that is in interior bucket 32 tops, so be in the clean effect that the washings on top just can not be enough.So just produced the problem that washability differs.

Summary of the invention

The present invention is intended to address the above problem, its purpose is: by produce foam in being dissolved with the cleaning solution of washing powder, the foam that produces is accumulated in the foam chamber, the pump that again it made progress rises from the top and waters on the washings that is spread across the interior bucket, thereby guarantee very high cleaning strength, it is uneven to reduce washing.

To achieve these goals, in washing machine of the present invention, supply the interior bucket of washings input to be arranged in the outer bucket, by bucket rotation in the drive unit driving in rotation mode freely; In addition, the internal face of outer bucket is provided with the foam chamber, by bucket rotation in making, produces foam in the cleaning solution between interior bucket and outer barrel; And the foam that will produce, float over cleaning solution top accumulates in the foam chamber and the pump that makes progress rises, and is ejected into the interior bucket from the top.

Like this, by making cleaning solution and air along with the rotation of interior bucket mixes, just can be by in being dissolved with the cleaning solution of washing powder, producing foam, the foam that produces is accumulated in the foam chamber, the pump that again it made progress rises from the top and waters on the washings that is spread across the interior bucket, thereby guarantee very high cleaning strength, it is uneven to reduce washing.

Washing machine described in the technical scheme 1 of the present invention comprises: for the interior bucket of washings input; Accommodate described in bucket with and make in this bucket rotation outer bucket freely; With the drive unit that drives described interior bucket rotation, the described internal face of bucket outward is provided with the foam chamber and this foam chamber is positioned at the described top of the inner bottom surface of bucket outward, by making described interior bucket rotation, produce foam in the cleaning solution in described between bucket and the outer bucket, and make the foam that produces floats over cleaning solution top, accumulates in the described foam chamber and risen in the top is ejected into barrel by pump upwards.Like this, by making cleaning solution and air along with the rotation of interior bucket mixes, just can be by in being dissolved with the cleaning solution of washing powder, producing foam, the foam that produces is accumulated in the foam chamber, the pump that again it made progress rises from the top and waters on the washings that is spread across the interior bucket, thereby guarantee very high cleaning strength, reduce the washing uneven phenomenon.In addition, owing to make the structure that the foam that produces accumulates in the foam chamber and the pump that makes progress rises very simple, can improve reliability.

Invention described in the technical scheme 2 is, in the invention described in the technique scheme 1, is provided with the foam jet parts with the front end of the joining circulation canal in foam chamber, and is arranged to spray foam from the top by described foam jet parts toward interior bucket.Like this, because the washings top-pour in can be inwardly barrel is spilt a large amount of foams, can improve clean ability.

Invention described in the technical scheme 3 is that in the invention described in the technique scheme 2, the foam jet parts are configured to make the emission direction of foam identical with the direction of rotation of interior bucket.Like this, can reduce to have sprayed the speed difference between the washings in foam and interior bucket or the interior bucket, thereby can prevent that washings in the foam that falls and interior bucket or interior barrel from bumping and splash everywhere.

Invention described in the technical scheme 4 is, in the invention described in the technique scheme 2, the foam jet parts are configured to make the coverage of the foam of ejection to extend to a barrel wall from the approximate centre position of interior bucket always.Like this, if interior bucket rotation, foam will water on all washings that are spread across in the interior bucket equably, thereby can reduce the washing uneven phenomenon in the washings.

Invention described in the technical scheme 5 is, in the invention described in

technique scheme

1 or 2, pump that foam is made progress rise or the foam stroke that sprays before, thereby be provided with make in the bucket rotation make the detergent dissolving stroke of detergent dissolving.Like this, pump rises thereby water the phenomenon of undissolved washing powder from the foam jet parts to washings can to prevent undissolved washing powder to accumulate in the foam chamber, being made progress with cleaning solution, thereby can prevent that detergent dissolving is incomplete.

Invention described in the technical scheme 6 is, in the invention described in

technique scheme

1 or 2, pump that foam is made progress rise or the foam stroke that sprays in, the rotation at a high speed on of interior bucket than the low water level of normal water level.Like this,, can quicken cleaning solution and Air mixing, produce a large amount of foams because rotation at a high speed takes place interior bucket; Simultaneously, owing to being bucket rotation on low water level, making, can preventing that the cleaning solution generation liquid level that is in the foam below from rising, entering the phenomenon in the foam chamber in a large number, thereby can increase the ratio of the foam that is risen by the pump that makes progress.

Invention described in the technical scheme 7 is that in the invention described in

technique scheme

1 or 2, the foam chamber is positioned at the top of the inner bottom surface of outer bucket.Like this, can prevent that the cleaning solution of foam below from entering in the foam chamber 14 in a large number, thereby can increase the ratio of foam in the cleaning solution that pump upwards rises.

Invention described in the technical scheme 8 is, also is provided with the side plate that constitutes foam chamber's outer wall in the invention described in

technique scheme

1 or 2, and described side plate is configured to the internal face broadening gradually laterally along direction of rotation from outer bucket.Like this, under action of centrifugal force, will be coupled with power toward the outer side on the foam, accumulate in the foam chamber, increase the foam volume that the pump that makes progress rises thereby can make effectively.

Invention described in the technical scheme 9 is, also is provided with the dividing plate that foam chamber and outer bucket inside are isolated in the invention described in technique scheme 1 or 2.Like this, it is inner to prevent to accumulate in foam in the foam chamber outer bucket that flows backwards back, thereby increases the foam volume that pump upwards rises.

Invention described in the technical scheme 10 is, also is provided with the guided plate of the bottom surface that constitutes the foam chamber in the invention described in

technique scheme

1 or 2, and described guided plate is configured to tilt upward along direction of rotation.Like this, can make the speed composition of foam be transformed into vertical direction, thereby increase the foam volume that the pump that makes progress rises from horizontal direction.

Invention described in the technical scheme 11 is, it is characterized in that also being provided with the guided plate of the bottom surface that constitutes the foam chamber in the invention described in

technique scheme

1 or 2, and described guided plate is configured to along direction of rotation crooked upward.Like this, can make the speed composition of foam be transformed into vertical direction effectively, thereby increase the foam volume that the pump that makes progress rises from horizontal direction.

Invention described in the technical scheme 12 is, in the invention described in

technique scheme

1 or 2, the peristome on top, foam chamber is sealed by the lid that is located on the outer bung, and simultaneously, described lid is provided with the part circulation canal.Like this, just can prevent that by simple structure foam from leaking, improve reliability, and can reduce variety of components, reduce production costs.

Description of drawings

Fig. 1 is the longitudinal section of the washing machine among the present invention the 1st embodiment,

Fig. 2 is the oblique view of outer bucket after the part excision of this washing machine,

Fig. 3 is the oblique view of primary structure (inside and outside bucket) after the part excision of this washing machine,

Fig. 4 is the schematic diagram of expression washing powder molecular model,

Fig. 5 is the schematic diagram of the state after expression washing powder molecule dissolves in the water,

Fig. 6 is the schematic diagram when feeding bubble in the washing powder solution,

Fig. 7 is the oblique view of outer bucket after the part excision of the washing machine of the present invention the 2nd embodiment,

Fig. 8 is the oblique view of another kind of outer bucket after the part excision of this washing machine,

Fig. 9 is the longitudinal section of existing washing machine.

In the above-mentioned accompanying drawing, 1 is outer bucket, and 2 is interior bucket, and 9 is motor (drive unit), and 14 is the foam chamber.

The specific embodiment

Embodiments of the invention are described with reference to the accompanying drawings.

(embodiment 1)

As shown in fig. 1, the inside of outer bucket 1 is provided with rotation interior bucket 2 freely, and the inner bottom part of interior bucket 2 is provided with rotation agitator 4 freely.On the peristome on outer bucket 1 top across seal 5 is provided with outside bung 6, outer simultaneously bucket 1 is suspended in the washing machine shell 8 by hanging excellent 7.

Motor (drive unit) 9 be bucket 2 rotations in reducing gear 3 drives.Water intaking valve 10 is used for inwardly intaking in the bucket 2, and condensate tank of dehumidifier 11 is used to detect the water level in the outer bucket 1, and draining valve 12 is used to discharge the cleaning solution in outer barrel 1.Each operating process of washing, rinsing, dehydration is finished in the operation of control device 13 control motors 9, water intaking valve 10, draining valve 12 etc. successively.

As shown in Figure 2, the position that is higher than the inner bottom surface 1a of outer bucket 1 outside on the internal face of bucket 1 is provided with foam chamber 14, and the peristome on 14 tops, foam chamber is undertaken airtight by the lid 15 that is located on the outer bung 6 by seal 5.Simultaneously, lid 15 is provided with part circulation canal 16, and the front end of circulation canal 16 is provided with foam jet parts 17.

In addition, as shown in Figure 2, the side plate 18 that constitutes foam chamber's 14 outer walls is arranged to along the internal face outwards gradually broadening of direction of rotation from outer bucket 1.In addition, also be provided with the dividing plate 19 that the inside with foam chamber 14 and outer bucket 1 isolates.The guided plate 20 that constitutes the bottom surface of foam chamber 14 is arranged to be bent upwards along the direction of rotation of interior bucket 2.

The structure of foam jet parts 17 as shown in Figure 3, the emission direction of foam is identical with the direction of rotation of interior bucket 2, and makes the spraying range of the foam of ejection extend to a barrel wall 2b from the approximate centre position 2a of interior bucket 2 always.

Operational circumstances in the above-mentioned formation is described below.At first, inwardly drop into washings and washing powder on the bucket 2, start laundry operations.Control device 13 is opened water intaking valve 10, and inwardly bucket 2 advances water.When condensate tank of dehumidifier 11 detects water level and reaches setting (lower than common wash liquid level), send signal to control device 13, water intaking valve 10 is closed close.Afterwards, make the detergent dissolving stroke of detergent dissolving, by 9 rotations of control device 13 drive motors, bucket 2 rotations in making.The speed setting of this moment is lower than the rotating speed in the foam stroke thereafter, thereby washing powder can not make cleaning solution from 17 ejections of foam jet parts before dissolving.

Next, the pump that makes progress plays/sprays the foam stroke of foam.By with 2 rotations of bucket in making than rotating speed high in the detergent dissolving stroke, inwardly send into a large amount of air in the cleaning solution between bucket 2 and the outer bucket 1, cleaning solution and air are mixed, produce a large amount of foams.The a large amount of foams that produced will accumulate in the top of cleaning solution because proportion is lighter, on one side around the madial wall rotation of outer bucket 1, enter in the foam chamber 14 with the very strong impetus on one side.

Enter into after the foam chamber 14, the speed composition of foam is transformed into vertical direction along guided plate 20 from horizontal direction, and rushes at the top, passes circulation canal 16, washings in foam jet parts 17 inside buckets 2 spray, and are under the top spray of these washings.At this moment, because the bubble jet outgoing direction of foam jet parts 17 is identical with the direction of rotation of interior bucket 2, speed difference between the washings in foam that can reduce to spray and interior bucket 2 or the interior bucket 2, thus can prevent that the foam that falls and interior bucket 2 or interior bucket 2 interior washings from colliding and splash everywhere.

In addition owing to can extend to a barrel wall 2b from the approximate centre position 2a of interior bucket 2 always from the coverage of the foam of foam jet parts 17 ejection, if therefore interior bucket 2 in rotation, foam can water on whole washings in the interior bucket 2 equably.

Below foam is described in detail.In general, the schematic diagram of washing powder molecule A is made of hydrophilic group a and lipophilic group b as shown in Figure 4.Therefore, under washing powder dissolved in state in the water, washing powder molecule A fitly arranged on interface (water surface) as shown in Figure 5, was dispersed in the water to the then single or group of the washing powder molecule of not arranging.If the washing powder molecule on the interface got remove, the washing powder molecule in the water can replenish at once to Interface Moving.

Therefore, if resemble shown in Fig. 6 when in washing powder solution, sending into bubble B, bubble B can rise and arrive the interface, fitly is arranged in washing powder molecule A on the interface and can keeps intact and attach on foam film, forms foam C.That is to say, with forming the foam C that is arranging washing powder molecule A to greatest extent, so the concentration of washing powder will be very high.At this moment, for the additional washing powder molecule that is pulled away with the form of foam, the washing powder molecule in the liquid will move up, and bubble B sends constantly into, and foam C also will constantly form.At this moment, lipophilic group b will point to from the outside direction of foam film, and this is conspicuous.

When the foam C of Xing Chenging nuzzles up the surface of dirty washings or washings like this, greasy dirt and the dirt particle that is attached with greasy dirt will combine and be pulled away with lipophilic group b.In addition, foam C breaks in the process of passing washings, will infiltrate the washing powder solution of high concentration in the washings, and dirt is washed off easily.Like this, washings just can be by wash clean.

In the present embodiment, owing to be provided with foam chamber 14 on the internal face of bucket 1 outside, so 2 one rotations of interior bucket, to in the cleaning solution between interior bucket 2 and outer barrel 1, produce foam, the foam that generates will float over cleaning solution top, be collected in the foam chamber 14, and the pump that made progress rise.Therefore, by 2 rotations of bucket in making cleaning solution is mixed mutually with air, thereby produce a large amount of foams from the cleaning solution that has dissolved washing powder, such foam waters on the washings from the top of interior bucket 2, and make it surface or washings by washings, cleaning strength is improved.

In addition, become foam, because volume will increase, so the cleaning solution by seldom also can make the washing powder composition affact on the dirt in the washings by making cleaning solution.In addition, because employing is to make the simple structure that the foam that produces is collected in the foam chamber 14 and the pump that makes progress rises, unfailing performance accesses raising, and can reduce number of components, reduces production costs.

In addition, with the front end of foam chamber's 14 joining circulation canals 16 on be provided with foam jet parts 17, formation by foam jet parts 17 from the top structures of ejection foams in the bucket 2 inwardly, thereby can be inwardly washings in the bucket 2 water and spill a large amount of foams, the raising cleaning strength.

In addition, because foam jet parts 17 are configured to make the emission direction of foam identical with the direction of rotation of interior bucket 2, speed difference between the washings that has sprayed in foam and interior bucket 2 or the interior bucket 2 is reduced, can prevent that like this foam that falls and interior bucket 2 or interior bucket 2 interior washings from bumping and splash everywhere.

In addition, because foam jet parts 17 are configured to make the coverage of the foam of ejection to extend to a barrel wall from the approximate centre position of interior bucket 2 always, if bucket 2 rotations therefore, foam can water on all washings in the interior bucket 2 equably, thereby can reduce the washing uneven phenomenon of washings.

In addition, pump that foam is made progress rise or the foam stroke that sprays before, make interior bucket 2 rotations so that make the detergent dissolving stroke of detergent dissolving owing to also be provided with, pump rises thereby water the phenomenon of undissolved washing powder from foam jet parts 17 to washings so can prevent undissolved washing powder to accumulate in the foam chamber 14, being made progress with cleaning solution, thereby can prevent that detergent dissolving is incomplete.

In addition, rise or spray in the foam stroke of foam at pump upwards, interior bucket 2 is rotations at a high speed on than the low water level of normal water level.Because rotation at a high speed takes place in interior bucket 2, can quicken cleaning solution and Air mixing, produces a large amount of foams; Simultaneously, owing to being bucket 2 rotations on low water level, making, can preventing that the cleaning solution generation liquid level that is in the foam below from rising, entering the phenomenon in the foam chamber 14 in a large number, thereby can increase the ratio of the foam that is risen by the pump that makes progress.

In addition,, can prevent that therefore the cleaning solution of foam below from entering in the foam chamber 14 in a large number, thereby can increase the ratio of foam in the cleaning solution that pump upwards rises because foam chamber 14 is configured to be higher than the inner bottom surface of outer bucket 1.

In addition, also be provided with the side plate 18 of the outer wall that constitutes foam chamber 14, this side plate 18 is widened to the outside from the internal face of outer bucket 1 gradually along direction of rotation, and centrifugal force will become the power that foam is moved laterally, foam is collected in the foam chamber 14 effectively, increases the foam volume that the pump that makes progress rises.

In addition, owing to also be provided with foam chamber 14 and the dividing plate 19 that outer bucket 1 inside separates, the foam counter-flow that can prevent to be collected in the foam chamber 14 is gone into outer bucket 1 inside, thereby can increase the foam volume that the pump that makes progress rises.

In addition, owing to also be provided with the guided plate 20 of the bottom surface that constitutes foam chamber 14, this guided plate 20 is configured to tilt upward along direction of rotation, therefore can make the speed composition of foam be transformed into vertical direction from horizontal direction, thereby can increase the foam volume that is risen by the pump that makes progress.

In addition, because the peristome on 14 tops, foam chamber is airtight by 15 on the lid that is located on the outer bung 6, simultaneously, be provided with part circulation canal 16 on the lid 15 again, therefore, can prevent that by this simple formation foam from phenomenons such as leakage taking place, and improve reliability, and can reduce number of components, reduce production costs.

In addition, only pump is upwards risen in the present embodiment or spray the foam stroke of foam till describe in detail, what carry out after this is to make water level rise, make agitator 4 common washing stroke such as to stir, being described in this and just having omitted for these operating process.

In addition, in the foam stroke, also can only not spray foam, can also spray the mixture of foam and cleaning solution.

In addition, though thereby passing through of adopting in the present embodiment make in bucket 4 to the structures of right rotation ejection foam, the structure of being arranged to spray to anticlockwise foam also is fine.

(embodiment 2)

As shown in Figure 7, outer bucket 21 internal faces are provided with the foam chamber 22 of the inner bottom surface 21a that is higher than outer bucket 21, and the side plate 23 of the outer wall of formation foam chamber 22 is along internal face to the outside gradually broadening of direction of rotation from outer bucket 21.The guided plate 24 of the bottom surface of formation foam chamber 22 is crooked upward gradually along direction of rotation.Other constitute with the foregoing description 1 in identical.

Operational circumstances in the above-mentioned formation is described below.In the foam stroke that pump that foam is made progress rises/sprays, rotate as the foregoing description 1 by bucket 2 in making, in the cleaning solution between interior bucket 2 and outer bucket 21 the foam generation will be arranged, the foam that generates, be positioned at cleaning solution top is collected at foam chamber 22 and the pump that made progress rises, pass circulation canal 16 and inwardly spray in the bucket 2, and be the top ejection foam of the washings from interior bucket 2 from foam jet parts 17.

In the present embodiment, because it is crooked upward along direction of rotation to constitute the guided plate 24 of 22 bottom surfaces, foam chamber,, thereby can increase the foam volume that is risen by the pump that makes progress so the speed composition of foam can be transformed into vertical direction effectively from horizontal direction.

In addition, because the dividing plate 19 that foam chamber 22 and outer bucket 21 inside are separated is not set, though upwards the foam volume that rises of pump has minimizing, the pump that still foam can be made progress rises and sprays, so can adopt the formation more more simple than top embodiment 1.

In addition, in the present embodiment, be configured to internal face broadening gradually laterally though constitute the side plate 22 of the outer wall of foam chamber 21 along direction of rotation from outer bucket 21, but also can resemble shown in Fig. 8 do not establish side plate 23, but replace constituting the guided plate 24 of the bottom surface of foam chamber 22 by the convex guided plate 25 on the internal face that saliently is located at outer bucket.

In sum, in the invention described in the technical scheme 1 of the present invention, because the internal face of outer bucket is provided with the foam chamber, can in the cleaning solution between interior bucket and outer barrel, produce foam by bucket rotation in making, and make the foam that is arranged in cleaning solution top that produces accumulate in the foam chamber and the foam pump that makes progress is risen, therefore, along with can making cleaning solution and air, interior barrel rotation mixes, can produce a large amount of foams, simultaneously, make the structure that the foam that produces is collected in the foam chamber, the pump that also makes progress rises also very simple, can improve operating reliability.

So, cleaning solution and air are mixed, just can produce a large amount of foams from lysed cleaning solution by bucket in rotating, and make the foam that produces be collected in the foam chamber and upwards pump rise, on washings interior barrel is watered in the top.Like this, can guarantee very high cleaning strength, and reduce the washing uneven phenomenon.

Claims

1. a washing machine is characterized in that comprising: for the interior bucket of washings input; Accommodate described interior bucket and make this interior barrel of outer barrel of rotating freely; With the drive unit that drives described interior bucket rotation, the described internal face of bucket outward is provided with the foam chamber and this foam chamber is positioned at the described top of the inner bottom surface of bucket outward, by making described interior bucket rotation, produce foam in the cleaning solution in described between bucket and the outer bucket, and make the foam that produces floats over cleaning solution top, accumulates in the described foam chamber and risen in the top is ejected into barrel by pump upwards.

2. washing machine as claimed in claim 1 is characterized in that: be provided with the foam jet parts with the front end of the joining circulation canal in foam chamber, and be arranged to spray foam from the top by described foam jet parts toward interior bucket.

3. washing machine as claimed in claim 2 is characterized in that: the foam jet parts are configured to make the emission direction of foam identical with the direction of rotation of interior bucket.

4. washing machine as claimed in claim 2 is characterized in that: the foam jet parts are configured to make the coverage of the foam of ejection to extend to a barrel wall from the approximate centre position of interior bucket always.

5. washing machine as claimed in claim 1 or 2 is characterized in that: pump that foam is made progress rise or the foam stroke that sprays before, thereby be provided with make in the bucket rotation make the detergent dissolving stroke of detergent dissolving.

6. washing machine as claimed in claim 1 or 2 is characterized in that: pump that foam is made progress rise or the foam stroke that sprays in, the rotation at a high speed on of interior bucket than the low water level of normal water level.

7. washing machine as claimed in claim 1 or 2 is characterized in that also being provided with the side plate that constitutes foam chamber's outer wall, and described side plate is configured to the internal face broadening gradually laterally along direction of rotation from outer bucket.

8. washing machine as claimed in claim 1 or 2 is characterized in that also being provided with foam chamber and the inner dividing plate that separates of outer bucket.

9. washing machine as claimed in claim 1 or 2 is characterized in that also being provided with the guided plate of the bottom surface that constitutes the foam chamber, and described guided plate is configured to tilt upward along direction of rotation.

10. washing machine as claimed in claim 1 or 2 is characterized in that also being provided with the guided plate of the bottom surface that constitutes the foam chamber, and described guided plate is configured to along direction of rotation crooked upward.

11. washing machine as claimed in claim 1 or 2 is characterized in that: the peristome on top, foam chamber is sealed by the lid that is located on the outer bung, and simultaneously, described lid is provided with the part circulation canal.