CN112111904B

CN112111904B - Washing machine

Info

Publication number: CN112111904B
Application number: CN201910540411.2A
Authority: CN
Inventors: 王硕; 吕佩师; 程宝珍; 王玲臣
Original assignee: Qingdao Jiaonan Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Jiaonan Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2023-05-16
Anticipated expiration: 2039-06-21
Also published as: CN112111904A

Abstract

The invention discloses a washing machine, which comprises an outer barrel, an inner barrel rotatably arranged in the outer barrel, and a radial water flow driving device, wherein the radial water flow driving device sucks washing water along the axial direction of the inner barrel and ejects the washing water along the radial direction to form surging washing water flow in the inner barrel. According to the washing machine, the radial water flow driving device is arranged to spray water to the side peripheral wall of the inner barrel, so that washing water flows are enriched, the sprayed washing water moves upwards along the side peripheral wall, and the vertically-rolling surging washing water flow is formed in the inner barrel, so that the washing effect of clothes is improved, and the phenomenon of clothes winding and serious clothes abrasion in a traditional washing mode are relieved.

Description

Washing machine

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to a washing machine.

Background

The existing pulsator washing machine has a washing principle developed by simulating manual washing of clothes, and a main component for generating mechanical action is a pulsator which is positioned at the bottom of a washing barrel. The washing machine controls the washing machine motor to intermittently perform forward and reverse operations according to a set rotation-stop ratio through a computer program controller to form vortex water flow to wash clothes. However, the water flow makes the clothes continuously rotate and roll along with the water flow, continuously squeeze towards the center, generate winding and have great wear on the clothes.

Furthermore, the conventional pulsator washing machine may cause increased wear of laundry due to the contact friction of the pulsator with the laundry for a long time during washing. And the impeller and the inner barrel bottom have relative motion, the impeller and the inner barrel bottom have an assembly gap of about 2 mm, and some foreign matters such as paper clips, coins, pins and other hard matters can enter the space between the inner barrel and the outer barrel from the gap to form noise, and more seriously enter the drain valve, so that the drain valve cannot be closed or damaged.

The present invention has been made in view of this.

Disclosure of Invention

The invention aims to solve the technical problems of overcoming the defects of the prior art, and provides a washing machine which can form the radial spraying of washing water, enrich the washing water flow, improve the washing effect of clothes and relieve the phenomenon of clothes winding and serious clothes abrasion in the traditional washing mode.

In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that:

the washing machine comprises an outer barrel, an inner barrel rotatably arranged in the outer barrel, and a radial water flow driving device, wherein the radial water flow driving device sucks washing water along the axial direction of the inner barrel and ejects the washing water along the radial direction, so that a surging washing water flow is formed in the inner barrel.

Preferably, the radial water flow driving device drives water between the inner barrel and the outer barrel to enter the inner barrel, and flows from the barrel bottom of the inner barrel to the side peripheral wall of the inner barrel in the radial direction, so as to form a surging washing water flow in the inner barrel.

Preferably, the bottom of the inner barrel is provided with a water flow channel communicated with the inner cavity of the inner barrel and the cavity between the inner barrel and the outer barrel, the radial water flow driving device comprises a water inlet part and a water outlet part, the water inlet part is positioned in the water flow channel, and the water outlet part is positioned in the inner cavity of the inner barrel and is arranged towards the side peripheral wall of the inner barrel.

In the scheme, the water inlet part of the radial water flow driving device is arranged in the water flow channel, the water outlet part is positioned in the inner cavity of the inner barrel, water between the inner barrel and the outer barrel enters the radial water flow driving device through the water inlet part, and then is sprayed out along the side peripheral wall of the inner barrel along the radial direction through the water outlet part of the radial water flow driving device, so that a gushing water flow effect is formed, and clothes are washed.

Preferably, the radial water flow driving device comprises a centrifugal impeller, the centrifugal impeller comprises an upper end cover, a lower end cover and a plurality of blades arranged between the upper end cover and the lower end cover and connected with the upper end cover and the lower end cover, the water inlet part comprises a water inlet arranged on the lower end cover, an annular water outlet part is formed between the upper end cover and the lower end cover, the lower end cover is positioned in the water flow channel, and the upper end cover is positioned in the inner cavity of the inner barrel.

In the scheme, the lower end cover is positioned in the water flow channel, the upper end cover is higher than the water flow channel, the annular water outlet part formed between the upper end cover and the lower end is arranged concentrically with the barrel wall of the inner barrel, and the centrifugal impeller rotating at high speed throws water from the annular water outlet part to the side peripheral wall of the inner barrel.

Preferably, the lower end cover surrounds the water inlet is provided with a convex ring, the water flow channel comprises a cylindrical first chamber arranged on the bottom of the inner barrel and a second chamber which is extended outwards from the first chamber and communicated with the inner chamber of the inner barrel, the convex ring is accommodated in the first chamber, the lower end cover is accommodated in the second chamber, and the upper end cover is positioned in the inner chamber of the inner barrel.

Preferably, the centrifugal impeller comprises a plurality of blades arranged around the water inlet, and each blade comprises a convex strip which is arranged by extending the edge of the water inlet to the periphery.

Preferably, each raised strip is bent and extended from the edge of the water inlet to the periphery along the radial direction to the anticlockwise/clockwise direction.

Preferably, a protective cover for covering the centrifugal impeller is arranged in the inner barrel, a plurality of circulating parts are arranged on the protective cover, and the centrifugal impeller drives water to flow out of the protective cover through the circulating parts.

Preferably, the protection casing includes the casing of inwards barrel open end evagination, the circulation portion is including seting up a plurality of first openings on the week side border of casing, the protection casing cover is installed on the barrel head of inner barrel, each first opening respectively with the barrel head of inner barrel form the delivery port, centrifugal impeller drives water and flows out the protection casing by each delivery port.

In the scheme, the protective cover is arranged on the barrel bottom of the inner barrel, the first openings on the edge and the barrel bottom of the inner barrel naturally form water outlets, and the water outlets are all arranged towards the side peripheral wall of the inner barrel, so that when the centrifugal impeller rotates at a high speed, the blades throw water into a cavity formed by the protective cover and the barrel bottom of the inner barrel, and meanwhile, the water is sprayed out from the water outlets on the periphery of the protective cover by the aid of the suddenly increased pressure, so that a gushing effect is formed.

Preferably, the inner surface of the barrel bottom of the inner barrel is provided with an annular convex ring in a surrounding manner, the annular convex ring is provided with a plurality of second openings, the peripheral end face of the shell is in butt joint with the annular convex ring, and each first opening and each second opening are arranged in a one-to-one opposite manner.

In the scheme, the first openings and the second openings are arranged in one-to-one opposite mode, so that the formed water outlet is enlarged, and water flow is favorably sprayed out from the water outlet on the protective cover.

Preferably, the circumference of the protective cover is fixed on the bottom of the inner barrel through a fastener. A plurality of connecting holes are formed in the periphery of the protective cover at intervals, and each connecting hole penetrates through and is fixed on the bottom of the inner barrel through a fastener.

Preferably, the washing machine comprises a driving motor and an accelerating device, wherein the driving motor is in driving connection with the accelerating device, and the accelerating device is in driving connection with the centrifugal impeller.

In the scheme, the driving motor is driven by the accelerating device, so that the rotation speed of the centrifugal impeller is increased, the centrifugal impeller can form enough water pressure just under the high-speed rotation speed, water flow is sprayed out, the 'spring surge' effect is realized, and the washing effect on clothes is improved.

Preferably, the accelerating device is an accelerator and comprises a sun gear and a planet carrier, wherein the planet carrier is connected with a driving shaft of the driving motor, and the sun gear is connected with the centrifugal impeller through an impeller shaft.

After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects:

1. the washing machine comprises an outer barrel, an inner barrel rotatably arranged in the outer barrel, and a radial water flow driving device, wherein the radial water flow driving device sucks washing water along the axial direction of the inner barrel and radially sprays the washing water to form surging washing water flow in the inner barrel. According to the washing machine, the radial water flow driving device is arranged to spray water to the side peripheral wall of the inner barrel, so that washing water flows are enriched, the sprayed washing water moves upwards along the side peripheral wall, and the vertically-rolling surging washing water flow is formed in the inner barrel, so that the washing effect of clothes is improved, and the phenomenon of clothes winding and serious clothes abrasion in a traditional washing mode are relieved.

2. In the invention, the centrifugal impeller is selected to drive water flow, the diameter of the centrifugal impeller is far smaller than that of the impeller on the conventional impeller washing machine, and the noise is small during operation.

3. In the invention, the centrifugal impeller is covered and provided with the protective cover, the centrifugal impeller is not contacted with clothes, the friction to the clothes is small, the clothes cannot be damaged, the diameter of the centrifugal impeller is far smaller than that of the impeller, and the running noise is small. The centrifugal impeller is hidden at the bottom of the inner barrel and is not accessible, so that the safety is high, and moreover, the flow velocity of water formed by the centrifugal impeller is high, so that the dissolving effect on the detergent is good.

4. In the invention, the centrifugal impeller drives to form surging washing water flow, the water flow speed is rapid, and the dissolution effect of the detergent is good.

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:

FIG. 1 is a schematic cross-sectional view of a washing machine according to the present invention;

FIG. 2 is a schematic view showing an internal perspective structure of the washing machine according to the present invention;

FIG. 3 is a schematic view of the structure of the tub of the washing machine according to the present invention;

FIG. 4 is a schematic view of the structure of the centrifugal impeller of the present invention;

FIG. 5 is a schematic view of a filter device according to the present invention;

fig. 6 is a schematic view of the structure of the filter of the filtering device of the present invention.

Wherein, 10, the outer barrel; 20. an inner barrel; 201. a dehydration hole; 202. a drain hole; 21. a water flow channel; 211. a first chamber; 212. a second chamber; 22. a centrifugal impeller; 221. an upper end cap; 222. a lower end cap; 2221. a water inlet; 2222. a convex ring; 223. a blade; 30. a protective cover; 31. a first opening; 40. an annular convex ring; 41. a second opening; 50. a motor; 51. an acceleration device; 60. a filter cover; 61. a filter; 62. a front housing; 63. a rear housing; 70. attaching a block; 80. and (3) a flange.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 6, the present invention provides a washing machine including an outer tub 10, an inner tub 20 rotatably provided in the outer tub 10, and a radial water flow driving device sucking washing water in an axial direction of the inner tub 20 and spraying the washing water in a radial direction to form a surge washing water flow in the inner tub 20. Further, the radial water flow driving device drives water between the inner and outer tub 10 to enter the inner tub 20, and flows from the bottom of the inner tub 20 to the side peripheral wall of the inner tub 20 in the radial direction, thereby forming a surging washing water flow in the inner tub 20.

According to the washing machine, the radial water flow driving device is arranged to spray water to the side peripheral wall of the inner barrel, so that washing water flows are enriched, the sprayed washing water moves upwards along the side peripheral wall, and the vertically-rolling surging washing water flow is formed in the inner barrel, so that the washing effect of clothes is improved, and the phenomenon of clothes winding and serious clothes abrasion in a traditional washing mode are relieved.

Example 1

Referring to fig. 1, in this embodiment, the bottom of the inner tub 20 is provided with a water flow channel 21 communicating the inner chamber of the inner tub 20 and the chamber between the inner and outer tub 10, and the radial water flow driving device includes a water inlet portion and a water outlet portion, wherein the water inlet portion is located in the water flow channel 21, and the water outlet portion is located in the inner chamber of the inner tub 20 and is disposed toward the side peripheral wall of the inner tub 20.

The water inlet part of the radial water flow driving device is arranged in the water flow channel 21, the water outlet part is positioned in the inner cavity of the inner barrel 20, water between the inner barrel 10 and the outer barrel 10 enters the radial water flow driving device through the water inlet part, and then is sprayed out to the side peripheral wall of the inner barrel 20 along the radial direction through the water outlet part of the radial water flow driving device, so as to form a gushing water flow effect, and wash clothes.

In a preferred embodiment, the radial water flow driving device comprises a centrifugal impeller 22, the direction of water flow is perpendicular to the direction of the rotating shaft by the power generated by the centrifugal impeller 22, and in the process of rotating the centrifugal impeller 22 at a high speed, the centrifugal impeller 22 generates thrust to the fluid by utilizing centrifugal force, and the radial water flow driving device is suitable for the environment with high lift and low flow, so that high-speed high-pressure water flow is generated, and the treatment effect on clothes is improved.

In the prior art, an axial impeller (or axial flow impeller) is arranged in a cavity between the inner barrel and the outer barrel 10, the axial impeller is different from the centrifugal impeller 22, the power generated by the axial impeller makes the water flow and the rotating shaft in the same direction, and the thrust to the fluid generated by the rotating angle of the blades is suitable for a high-flow low-lift environment, so that the washing effect on clothes is inferior to that of the centrifugal impeller 22.

Specifically, referring to fig. 4, the centrifugal impeller 22 includes an upper end cap 221, a lower end cap 222, and a plurality of blades 223 disposed between and connecting the upper end cap 221 and the lower end cap 222, the water inlet portion includes a water inlet 2221 disposed on the lower end cap 222, an annular water outlet portion is formed between the upper end cap 221 and the lower end cap 222, the lower end cap 222 is disposed in the water flow channel 21, and the upper end cap 221 is disposed in the inner chamber of the inner tub 20. The lower end cover 222 is positioned in the water flow channel 21, the upper end cover 221 is higher than the water flow channel 21, the annular water outlet part formed between the upper end cover 221 and the lower end is concentric with the barrel wall of the inner barrel 20, when the impeller rotates at high speed, water between the inner barrel 10 and the outer barrel 10 enters between the upper end cover 221 and the lower end cover 222 through the water flow channel 21 from the water inlet 2221, and flows along the radial line to the side peripheral wall of the inner barrel 20 under the action of the impeller to form surging washing water flow.

Referring to fig. 1 and 4, the lower end cap 222 is provided with a convex ring 2222 around the water inlet 2221, the water flow channel 21 includes a cylindrical first chamber 211 provided on the bottom of the inner tub 20 and a second chamber 212 extended upward and outward from the first chamber 211, communicating with the inner chamber of the inner tub 20, the convex ring 2222 is accommodated in the first chamber 211, the lower end cap 222 is accommodated in the second chamber 212, and the upper end cap 221 is positioned in the inner chamber of the inner tub 20. The convex ring 2222 is designed to form a water inlet channel, and water between the inner and outer barrels 10 is guided by the convex ring 2222 to enter the centrifugal impeller 22.

The centrifugal impeller 22 includes a plurality of blades 223 disposed around the water inlet 2221, and each blade 223 includes a convex strip extending from the edge of the water inlet 2221 to the periphery. The blades 223 may be a rib structure extending along the radial direction of the upper end cap 221/lower end cap 222, or may have other shapes. For example, each rib is curved and extended from the edge of the water inlet 2221 to the outer circumference in the radial direction counterclockwise/clockwise direction. Each convex strip is of an arc-shaped structure bent to one side, so that stable fountain water flow is formed.

Example two

Referring to fig. 1 and 2, in the second embodiment, a protective cover 30 is disposed inside the inner tub 20, and the protective cover 30 covers the centrifugal impeller 22, so as to isolate clothes from the impeller, thereby avoiding the occurrence of the problem that the abrasion of the clothes is aggravated due to the contact friction between the conventional impeller and the clothes for a long time in the washing process. The existing pulsator and the bottom of the inner barrel 20 have relative movement, the pulsator and the inner barrel have an assembly gap of about 2 mm, and some foreign matters such as paper clips, coins, pins and the like can enter between the inner barrel and the outer barrel 10 from the gap to form noise, and more seriously enter the drainage valve, so that the drainage valve cannot be closed or damaged. One innovation point in the implementation is to cancel the pulsator of the existing pulsator washing machine, and no visible high-speed moving or rotating structural part exists in the inner barrel 20, so that the overturning of clothes is realized by strong water flow. The protective cover is radially provided with a plurality of protruding parts, so that the protective cover plays a role of a reinforcing structure.

In this embodiment, the centrifugal impeller 22 is not in contact with the clothes, the friction to the clothes is small, the clothes cannot be damaged, and the diameter of the centrifugal impeller 22 is far smaller than that of the impeller, so that the running noise is small. The centrifugal impeller 22 is hidden at the bottom of the inner tub 20, is not accessible, has high safety, and has high flow rate of water flow formed by the centrifugal impeller 22 and good dissolution effect on detergent.

The inner tub 20 is provided with a protecting cover 30, the protecting cover 30 is provided with a plurality of circulating parts, and the centrifugal impeller 22 drives water to flow out of the protecting cover 30 through each circulating part.

Specifically, the protecting cover 30 includes a housing protruding toward the open end of the inner tub 20, the circulation portion includes a plurality of first openings 31 formed on the peripheral edge of the housing, when the protecting cover 30 is mounted on the bottom of the inner tub 20 in a covering manner, the first openings 31 and the bottom of the inner tub 20 form water outlets, respectively, and the centrifugal impeller 22 drives water to flow out of the protecting cover 30 from the water outlets. In this scheme, install the protection casing 30 on the barrel head of interior bucket 20, each first opening 31 on the border and the barrel head of interior bucket 20 naturally have formed the delivery port, and each delivery port all is towards the side perisporium setting of interior bucket 20, so, when centrifugal impeller 22 high-speed rotation, blade 223 gets rid of water in the cavity that protection casing 30 and interior bucket 20 barrel head formed, and the pressure that increases sharply makes water blowout from each delivery port in protection casing 30 periphery simultaneously, forms the gushing effect.

Referring to fig. 2, an annular convex ring 40 is disposed on the inner surface of the bottom of the inner tub 20 and surrounds the water flow channel 21, a plurality of second openings 41 are disposed on the annular convex ring 40, the peripheral end surface of the housing abuts against the annular convex ring 40, and the first openings 31 are disposed opposite to the second openings 41 one by one. In this scheme, the first openings 31 and the second openings 41 are arranged in a one-to-one opposite manner, so that the formed water outlet is enlarged, and water flow is facilitated to be sprayed out from the water outlet on the protective cover 30.

The peripheral side of the shield 30 is fixed to the bottom of the inner tub 20 by a fastener. The shield 30 is provided at a circumference with a plurality of coupling holes at intervals, and each coupling hole is respectively fastened to the bottom of the inner tub 20 by a fastener.

Example III

Referring to fig. 1, in this embodiment, considering that the rotation speed of the impeller driven by the conventional pulsator washing machine cannot reach the requirement of the centrifugal impeller 22, the washing machine includes a driving motor 50 and an accelerating device 51, wherein the driving motor 50 is in driving connection with the accelerating device 51, and the accelerating device 51 is in driving connection with the centrifugal impeller 22. The driving motor 50 is driven by the accelerating device 51, so that the rotation speed of the centrifugal impeller 22 is increased, and the centrifugal impeller 22 can form enough water pressure just under the high-speed rotation speed, so that water flow is sprayed out, a 'spring surge' effect is realized, and the washing effect on clothes is improved.

The accelerator 51 is an accelerator, and includes a sun gear and a carrier, the carrier is connected to a drive shaft of the drive motor 50, and the sun gear is connected to the centrifugal impeller 22 through an impeller shaft.

The accelerator is described in detail below:

the accelerator can adopt the existing 'decelerator' on the pulsator washing machine, and only the installation mode and the connection mode of the 'decelerator' are replaced. The input shaft of the traditional speed reducer is connected with the sun gear, and the output shaft is connected with the planet carrier, so that the rotating speed of the output shaft is lower than that of the input shaft.

The principle of acceleration of the speed reducer in this embodiment is as follows: the planetary gear of the traditional speed reducer is turned 180 degrees, the input shaft is connected with the planetary carrier, and the output shaft is connected with the central wheel, so that the rotating speed of the output shaft is higher than that of the input shaft. The change only needs to change the planet wheel, the input shaft and the output shaft of the speed reducer, and other structures can be universal.

For example, a speed reducer with a reduction ratio of 5:1 can realize 600 revolutions per minute of the rotation speed of an input shaft and 3000 revolutions per minute of the rotation speed of an output shaft.

The output end of the speed reducer is connected with an impeller shaft and an inner barrel shaft, the impeller shaft is connected with the centrifugal impeller 22, the inner barrel shaft is connected with the inner barrel 20, the impeller shaft drives the centrifugal impeller 22 to rotate, and the inner barrel shaft drives the inner barrel 20 to rotate. Specifically, a flange is fixedly connected to the bottom of the inner tub 20, and the inner tub shaft is fixedly connected to the flange. Wherein, the flange is provided with an avoiding opening corresponding to the water flow channel 21, which is beneficial for water between the inner barrel and the outer barrel 10 to enter the water flow channel 21 through the avoiding opening, and circulating surging washing water flow is formed between the inner barrel and the outer barrel.

Example IV

Referring to fig. 3, 5 and 6, in this embodiment, based on the description of the structure of the washing machine in the above embodiment, a structure of the filtering device matching with the structure is provided.

Specifically, the lint filtering apparatus includes a filter cover 60 mounted on a side circumferential wall of the inner tub 20 of the washing machine and a filter 61 detachably mounted on the filter cover 60, wherein the filter 61 is different from the existing filter 61, the filter 61 includes a front case 62 and a rear case 63, the front case 62 is a case having no mesh in a surface closure, the rear case 63 is provided with a filter screen, the front case 62 is located at one side of the inner tub 20, the rear case 63 is located between the front case 62 and a tub wall of the inner tub 20, and further, a drain hole 202 is provided on a tub wall of the inner tub 20 corresponding to the rear case 63, so that when the centrifugal impeller 22 drives water flow, the water flow enters the filter 61 from the inside of the inner tub 20, after the filter screen in the filter 61 filters lint in the water, further, a plurality of dehydration holes 201 are provided on a side circumferential wall (or referred to as tub wall) of the inner tub 20, and drain holes 202 are densely provided on a side circumferential wall of the inner tub 20 corresponding to a rear portion of the filter 61, and the filtered water enters a space between the inner tub and the outer tub through the drain holes. The drain hole 202 has a larger diameter than the dehydration hole 201. The large drain holes 202 function to allow water to preferentially flow through the filter cover 60 assembly during washing, draining, and dehydrating, thereby increasing the lint collection rate of the filter 61.

Example five

In the fifth embodiment, the auxiliary block 70 is disposed on the side wall of the inner tub 20 of the washing machine, the auxiliary block 70 extends along the vertical direction, the auxiliary block 70 disturbs the water flow during the rotation of the inner tub 20, the tumbling and rubbing effects of the clothes are increased, and the auxiliary block cooperates with the centrifugal impeller to improve the cleaning effect.

The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any simple modification, equivalent variation and variation of the above embodiments according to the technical matter of the present invention without departing from the scope of the invention.

Claims

1. The washing machine comprises an outer barrel and an inner barrel rotatably arranged in the outer barrel, and is characterized by further comprising a radial water flow driving device, wherein the radial water flow driving device sucks washing water along the axial direction of the inner barrel and radially sprays the washing water to form a surging washing water flow in the inner barrel;

the radial water flow driving device comprises a water inlet part and a water outlet part, wherein the water inlet part is positioned in the water flow channel, and the water outlet part is positioned in the inner cavity of the inner barrel and is arranged towards the side peripheral wall of the inner barrel;

the radial water flow driving device comprises a centrifugal impeller, the centrifugal impeller comprises an upper end cover, a lower end cover and a plurality of blades which are arranged between the upper end cover and the lower end cover and are connected with each other, the water inlet part comprises a water inlet arranged on the lower end cover, an annular water outlet part is formed between the upper end cover and the lower end cover, the lower end cover is positioned in the water flow channel, and the upper end cover is positioned in an inner cavity of the inner barrel;

the water inlet is formed in the lower end cover in a surrounding mode, the water flow channel comprises a cylindrical first cavity and a second cavity, the cylindrical first cavity is arranged on the bottom of the inner barrel, the first cavity is extended outwards, the second cavity is communicated with the inner cavity of the inner barrel, the convex ring is contained in the first cavity, the lower end cover is contained in the second cavity, and the upper end cover is located in the inner cavity of the inner barrel.

2. A washing machine as claimed in claim 1 wherein the centrifugal impeller comprises a plurality of blades disposed around the water inlet, each blade comprising a rib extending peripherally from the rim of the water inlet.

3. A washing machine as claimed in claim 2 wherein each rib is curved from the inlet rim to the periphery in a radial anticlockwise/clockwise direction.

4. A washing machine as claimed in any one of claims 1 to 3 wherein a shield is provided within the inner tub to cover the centrifugal impeller, the shield being provided with a plurality of flow-through portions, the centrifugal impeller driving water from each flow-through portion out of the shield.

5. The washing machine as claimed in claim 4, wherein the protective cover comprises a housing protruding toward an open end of the inner tub, the circulating part comprises a plurality of first openings formed on a peripheral side edge of the housing, each first opening forms a water outlet with a tub bottom of the inner tub when the protective cover is mounted on the tub bottom of the inner tub in a covering manner, and the centrifugal impeller drives water to flow out of the protective cover through each water outlet.

6. The washing machine as claimed in claim 5, wherein an annular bead is provided on an inner surface of a bottom of the inner tub around the water flow passage, a plurality of second slits are provided on the annular bead, an outer peripheral end surface of the casing abuts against the annular bead, and the first slits are disposed in one-to-one opposition to the second slits.

7. A washing machine as claimed in any one of claims 1 to 3, comprising a drive motor and an accelerating means, said drive motor being drivingly connected to said accelerating means, said accelerating means being drivingly connected to said centrifugal impeller.

8. A washing machine as claimed in claim 7 wherein the accelerating means is an accelerator comprising a sun gear and a planet carrier, the planet carrier being connected to the drive shaft of the drive motor, the sun gear being connected to the centrifugal impeller by an impeller shaft.