CN110552142B

CN110552142B - Drum washing machine

Info

Publication number: CN110552142B
Application number: CN201810552348.XA
Authority: CN
Inventors: 吴迪; 郝兴慧; 刘会; 劳春峰
Original assignee: Qingdao Haier Washing Machine Co Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Priority date: 2018-05-31
Filing date: 2018-05-31
Publication date: 2023-06-13
Anticipated expiration: 2038-05-31
Also published as: CN110552142A

Abstract

The invention discloses a drum washing machine, which comprises: an inner cylinder; the inner cylinder is internally provided with a pulsator, the periphery of the pulsator extends to the inner wall of the inner cylinder, the periphery of the pulsator is not contacted with the inner wall of the inner cylinder, and the pulsator and the inner cylinder are respectively connected with a driving motor of the washing machine through a clutch mechanism, so that the inner cylinder and the pulsator can rotate in a differential speed to generate kneading acting force to wash clothes. Through set up the impeller at the bottom of the cover inner tube in drum type washing machine inside, make the impeller independently rotate relative to the inner tube under drum type washing machine driving motor effect to form differential rotation between impeller and the inner tube, and then reach and utilize the impeller periphery and the relative movement between the inner tube wall to produce and rub the washing effect to the clothing, promote the washing efficiency of clothing.

Description

Drum washing machine

Technical Field

The invention relates to a drum washing machine in the field of household appliances, in particular to a pulsator structure for a drum washing machine.

Background

The existing drum washing machine is generally provided with an outer drum in the washing machine, an inner drum driven by a motor to rotate is arranged in the outer drum, and after clothes are put into the inner drum, a small amount of washing water flows into the outer drum to soak the clothes, so that the clothes are fully mixed with the washing water containing detergent; and then the motor is used for driving the inner cylinder to rotate, the lifting ribs and other structures arranged in the inner cylinder are used for lifting and beating clothes, and the beating acting force is used for washing the clothes. The drum washing machine of the above prior art has the following disadvantages: the drum washing machine only relies on beating to wash after lifting the clothes, and does not have a rubbing effect on the clothes, so that the washing efficiency of the clothes is poor.

Therefore, the applicant specially provides the drum washing machine with the pulsator structure, so that the clothes can be rubbed by utilizing the differential rotation between the pulsator and the inner drum to form rubbing force under the action of the pulsator and the inner drum, and the clothes can be washed rapidly.

In view of this, the present invention has been made.

Disclosure of Invention

The invention aims to provide a drum washing machine, so as to realize the purposes of rubbing the clothes to be washed in the drum by the differential rotation of the inner drum and the impeller in the washing process and improving the washing efficiency of the drum washing machine. Meanwhile, another object of the present invention is to provide a pulsator structure for assembling a large-sized pulsator inside an inner tub of a drum washing machine. In addition, the invention also aims to provide a pulsator structure so as to achieve the purposes of increasing the kneading acting force between the pulsator and the inner cylinder and improving the washing cleanliness of the drum washing machine. In addition, another object of the present invention is to provide a pulsator structure, so as to achieve the purpose of rapid assembly and molding between pulsator components.

In order to achieve the above purpose, the invention adopts the following specific technical scheme:

a drum washing machine, comprising: an outer cylinder, in which an inner cylinder is sleeved, and is driven to rotate by a driving force; the inner cylinder is internally provided with a pulsator, the periphery of the pulsator extends to the inner wall of the inner cylinder, the periphery of the pulsator is not contacted with the inner wall of the inner cylinder, and the pulsator and the inner cylinder are respectively connected with a driving motor of the washing machine through a clutch mechanism, so that the inner cylinder and the pulsator can rotate in a differential speed to generate kneading acting force to wash clothes.

Further, the pulsator is arranged at the bottom of the inner cylinder in a covering manner, and the pulsator and the inner cylinder are coaxially arranged and mutually independent and rotate around a common axis.

Further, a circle of folded edges extending towards the direction of the cylinder opening of the inner cylinder are arranged on the periphery of the impeller, and a certain gap is reserved between the periphery of the folded edges and the inner wall of the inner cylinder.

Further, a circle of supporting part protruding towards the center is arranged on the inner wall of the inner cylinder, and one side of the supporting part away from the bottom of the inner cylinder is in corresponding limiting contact with the periphery of the impeller.

Further, one side of the supporting part far away from the bottom of the inner cylinder is provided with a circle of limiting groove, and one side of the periphery of the impeller close to the bottom of the inner cylinder is provided with a limiting rib protruding towards the bottom of the inner cylinder, and the limiting rib is correspondingly inserted into the limiting groove; preferably, the extending end of the peripheral folded edge of the impeller is provided with a circle of supporting folded edge which is bent outwards along the radial direction of the impeller, one side of the supporting folded edge, which is close to the bottom of the inner cylinder, is in limiting contact with the supporting part, and the supporting folded edge is provided with a limiting rib which is correspondingly inserted into the limiting groove.

Further, the impeller is formed by mutually splicing a plurality of fan-shaped structures in sequence. The splicing structure can be any shape and can be mutually spliced to form a disc-shaped impeller structure.

Further, the splicing structure is a fan-shaped structure, two sides of the fan-shaped structure are respectively composed of a first splicing part and a second splicing part, and the first splicing part is a lower extending edge which protrudes outwards along the circular arc direction of the impeller from one side of the impeller close to the bottom of the inner cylinder; the second splice is an upper extending edge which protrudes outwards along the circular arc direction of the impeller from one side of the impeller away from the bottom of the inner cylinder, the upper extending edge and the lower extending edge are staggered in the thickness direction, and one side of the upper extending edge, which is close to the bottom of the inner cylinder, and one side of the lower extending edge, which is far from the bottom of the inner cylinder, are positioned on the same horizontal plane.

Further, at least one bolt hole is formed in the splicing structure, and splicing overlapping parts of adjacent splicing structures are fixedly connected through at least one bolt; further, bolts sequentially pass through the corresponding coincident bolt holes of at least two splicing structures, so that adjacent splicing structures are fixedly connected through the bolts; further, a plurality of bolt holes are respectively arranged on the first splicing part and the second splicing part along the radial direction of the impeller, so that bolts sequentially pass through the corresponding coincident bolt holes at the overlapped splicing parts of at least two splicing structures, and the corresponding coincident splicing parts of the adjacent splicing structures are fixedly connected through the bolts; further, the bolt holes arranged on the first splicing part and the second splicing part are respectively arranged symmetrically relative to the central axes of the sector structures in one-to-one correspondence.

Further, the impeller further comprises a connecting disc arranged at the center of the impeller and close to one side of the bottom of the inner cylinder, one side of the connecting disc, far away from the bottom of the inner cylinder, is respectively correspondingly attached to and contacted with each splicing structure, and the corresponding overlapping part of the connecting disc and each splicing structure is connected through at least one bolt.

Further, the upper periphery of the impeller is provided with a plurality of sections of concave-convex structures, each concave-convex structure forms a wavy curved surface with a height difference in the axial direction of the impeller at one side of the impeller far away from the bottom of the inner cylinder, and each concave-convex structure is symmetrically arranged relative to the center of the impeller.

Compared with the prior art, the invention has the following beneficial effects:

through set up the impeller at the bottom of the cover inner tube in drum type washing machine inside, make the impeller independently rotate relative to the inner tube under drum type washing machine driving motor effect to form differential rotation between impeller and the inner tube, and then reach and utilize the impeller periphery and the relative movement between the inner tube wall to produce and rub the washing effect to the clothing, promote the washing efficiency of clothing.

The wavy wheel is formed by mutually splicing a plurality of splicing structures, so that a plurality of smaller units are mutually spliced to form a larger wavy wheel structure, and the purpose of splicing and assembling the wavy wheel is realized; meanwhile, through the arrangement, the impeller which is large in size and cannot directly extend into the inner cylinder from the opening of the inner cylinder can be assembled and formed in the inner cylinder, and the assembly efficiency of the washing machine is improved.

Meanwhile, the invention has simple structure and obvious effect, and is suitable for popularization and use.

Drawings

The present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic sectional view of a drum washing machine in accordance with an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1A according to the embodiment of the present invention;

FIG. 3 is a schematic view of an assembled structure of impeller blades according to an embodiment of the present invention;

fig. 4 and 5 are schematic structural views of splicing members of a pulsator according to different views of the present invention;

fig. 6 is a schematic structural diagram of a pulsator connection part in an embodiment of the present invention.

Description of main elements: 100-inner cylinder, 101-inner cylinder bottom, 200-impeller, 201-blade part, 202-connecting part, 203-concave-convex structure, 204-splicing structure, 1-fan-shaped structure, 2-folded edge, 3-supporting folded edge, 4-supporting part, 5-limit groove, 6-limit rib, 7-convex part, 8-concave part, 9-installation groove, 10-connecting disc, 11-first splicing part, 12-second splicing part, 13-circular arc supporting rib, 14-connecting sleeve, 15-radial supporting rib, 16-second circular arc supporting rib, 17-screw column, 18-circular ring surface, 19-sleeve-shaped reinforcing rib and 20-connecting hole.

Detailed Description

As shown in fig. 1 to 6, an embodiment of the present invention describes a drum washing machine, which includes: an outer cylinder in which an inner cylinder 100 is sleeved; the pulsator 200 is installed in the inner tub 100, the outer circumference of the pulsator 200 extends to the inner wall of the inner tub 100, and the outer circumference of the pulsator 200 is not in contact with the inner wall of the inner tub 100, and the pulsator 200 and the inner tub 100 are respectively connected with a driving motor of the washing machine through a clutch mechanism, so that the inner tub 100 and the pulsator 200 can rotate in a differential speed to generate a kneading force to wash clothes.

In the embodiment of the invention, the pulsator 200 is arranged on the inner cylinder bottom 101 in a covering manner, and the pulsator 200 and the inner cylinder 100 are coaxially arranged and mutually independent and rotate around a common axis.

In the embodiment of the invention, a driving motor is arranged on the drum washing machine, a rotor of the driving motor is connected with a speed reduction clutch, a pulsator shaft of the speed reduction clutch is connected with a pulsator 200, and an inner drum shaft is connected with an inner drum 100, so that the inner drum 100 and the pulsator 200 are respectively controlled to rotate at the same speed under the distribution action of the speed reduction clutch to execute a rinsing and dehydration program or to rotate at a different speed to execute a washing program; preferably, when the washing machine performs a washing process, the pulsator 200 and the inner tub 100 generate differential motions with opposite rotation directions, so as to further enhance a relative force between the pulsator and the inner tub wall and enhance a rubbing efficiency of the drum washing machine on laundry.

Example 1

As shown in fig. 1 to 6, in the present embodiment, a pulsator structure is described, which includes a plurality of splicing structures 204 that are disposed independently of each other, and the splicing structures 204 are sequentially spliced with each other to form a disc-shaped pulsator 200.

In this embodiment, the spliced structures 204 forming the pulsator 200 and being spliced with each other may be any shape, and at least one side of each spliced structure 204 is spliced with and fixedly connected to the corresponding side of the adjacent spliced structure 204, so that the spliced structures 204 are fixedly connected with each other to form a complete disc-shaped pulsator structure. In this embodiment, the connection structure for fixedly connecting the corresponding overlapping portions of the adjacent splicing structures 204 may be any existing connection structure, for example: corresponding overlapped parts of adjacent splicing structures are mutually clamped and fixedly connected through the action of clamping jaws, or are mutually in threaded engagement and fixedly connected through the action of bolts, and the like. Meanwhile, in this embodiment, the corresponding overlapping positions of the adjacent splicing structures may be directly and fixedly connected, and the connection mode adopted by the method may be any connection mode in the prior art, for example, the corresponding overlapping positions of the adjacent splicing structures are directly welded and fixed, or the corresponding overlapping positions of the adjacent splicing structures are directly and correspondingly spliced and fixed, and so on.

In this embodiment, the following discussion is given by taking the fan-shaped structure 1 with the same shape as each splicing structure 204 as an example:

as shown in fig. 1 to 6, in this embodiment, a plurality of fan-shaped structures 1 sequentially splice corresponding sides to form a disc-shaped pulsator 200.

In this embodiment, the sides of the fan-shaped structures 1 overlap with the corresponding sides of the adjacent fan-shaped structures 1, and the overlapping portions are fixedly connected through the connection structure, so that the fan-shaped structures 1 are sequentially and fixedly connected end to form a disc-shaped pulsator 200.

In this embodiment, two sides of the fan-shaped structure 1 are respectively formed by a first splicing part 11 and a second splicing part 12, and the first splicing part 11 is a lower extending edge protruding outwards along the circular arc direction of the pulsator 200 from one side of the pulsator 200 close to the inner cylinder bottom 101; the second splicing part 12 is an upper extending edge protruding outwards along the circular arc direction of the impeller 200 from the side of the impeller 200 away from the inner barrel bottom 101, the upper extending edge and the lower extending edge are staggered in the thickness direction, the upper extending edge and the lower extending edge are overlapped and correspond in the rotation direction of the impeller, and the side of the upper extending edge, which is close to the inner barrel bottom 101, and the side of the lower extending edge, which is far away from the inner barrel bottom 101, are positioned on the same horizontal plane.

In this embodiment, the first splicing part 11 of the fan-shaped structure 1 is correspondingly overlapped and butted with the second splicing part 12 of the left adjacent fan-shaped structure 1, the second splicing part 12 and the first splicing part 11 of the right adjacent fan-shaped structure 1, and the overlapped and butted parts are fixed through a connecting structure.

In this embodiment, the first splicing part 11 and the second splicing part 12 are respectively provided with a plurality of bolt holes 21 arranged along the radial direction of the impeller; and each bolt hole 21 arranged on the first splicing part 11 and the second splicing part 12 is respectively and correspondingly arranged symmetrically relative to the central axis of the fan-shaped structure 1, so that bolts sequentially penetrate through the first splicing part and the second splicing part of the two fan-shaped structures to be spliced mutually and then are screwed and fixed through nuts, and the purpose of fixedly connecting the overlapped splicing parts of the two fan-shaped structures through the bolts is achieved.

Example two

As shown in fig. 1 to 6, this embodiment describes a pulsator structure based on the first embodiment, where the pulsator 200 is formed by sequentially splicing a plurality of splicing structures 204, the opposite sides of adjacent splicing structures 204 are mutually overlapped and spliced, and the splicing positions are fixed by a connecting structure.

In this embodiment, the overlapping and splicing positions of the adjacent splicing structures 204 are respectively on the same plane with the corresponding sides of the splicing structure body at two sides of the pulsator 200, so that the two sides of the pulsator are both composed of smooth planes.

In this embodiment, the splicing sides of the splicing structures 204 are provided with splicing parts with reduced thickness, and the corresponding splicing sides of the adjacent splicing structures 204 are provided with corresponding splicing parts, so that the splicing parts and the corresponding splicing parts are combined after corresponding splicing to form a coincident splicing part with the thickness equal to that of the wave wheel 200. In this embodiment, the splicing portion of the splicing structure 204 may be a protruding rib disposed near one side of the splicing structure or disposed in the middle, and the corresponding splicing portions of adjacent splicing structures 204 are protruding ribs or grooves that are correspondingly overlapped and correspondingly matched in the thickness direction, so that the splicing portion and the corresponding splicing portion are correspondingly overlapped and spliced, and the overlapped splicing portion is formed into an area with the same thickness as the body of the splicing structure 204 and no surface having any concavity and convexity.

In this embodiment, each splicing structure 204 is composed of a sheet structure with equal thickness, and a first splicing part 11 is provided on the splicing side of the sheet splicing structure 204, where the first splicing part 11 is a lower extending edge protruding outwards along the circular arc direction of the pulsator 200 from the side of the pulsator 200 near the inner cylinder bottom 101; the corresponding splicing sides of the adjacent splicing parts 204 are provided with second splicing parts 12, the second splicing parts 12 are upper extending edges which are outwards protruded from one side of the impeller 200 away from the inner barrel bottom 101 along the circular arc direction of the impeller 200, the upper extending edges and the lower extending edges are staggered in the thickness direction of the impeller 200 and correspondingly overlap in the circumferential direction of the impeller 200, and one side of the upper extending edges, which is close to the inner barrel bottom 101, and one side of the lower extending edges, which is far away from the inner barrel bottom 101, are positioned on the same horizontal plane, so that two sides of the overlapped splicing part formed by the first splicing parts 11 and the second splicing parts 12 are positioned on the same plane with the corresponding sides of the splicing structures 204 on the adjacent two sides.

as shown in fig. 1 to 6, in this embodiment, the pulsator 200 is formed by sequentially splicing a plurality of fan-shaped structures 1 that enclose a disc-shaped pulsator, the left and right sides of each fan-shaped structure 1 are respectively provided with a first splicing part 11 and a second splicing part 12, and the first splicing part 11 and the second splicing part 12 of the fan-shaped structure 1 are respectively overlapped and butted with the second splicing part 12 of the left adjacent fan-shaped structure 1 and the first splicing part 11 of the right adjacent fan-shaped structure 1 correspondingly, and the overlapped and butted parts are fixed through a connecting structure.

In this embodiment, the first splicing part 11 and the second splicing part 12 are respectively provided with a plurality of bolt holes 21 arranged along the radial direction of the impeller; and each bolt hole 21 arranged on the first splicing part 11 and the second splicing part 12 is respectively and correspondingly arranged symmetrically relative to the central axis of the fan-shaped structure 1, so that after the first splicing part and the second splicing part of the fan-shaped structure are respectively and correspondingly spliced with the second splicing part and the first splicing part of the fan-shaped structure on the corresponding connected side, bolts sequentially penetrate through the first splicing part and the second splicing part of the two fan-shaped structures to be spliced and then are screwed and fixed through nuts, and the purpose of fixedly connecting the overlapped splicing parts of the two fan-shaped structures through the bolts is realized.

Example III

As shown in fig. 1 to 6, in the present embodiment, there is described a pulsator structure including a pulsator 201 for agitating laundry, a connection part 202 engaged with a pulsator shaft of a driving motor, the connection part 202 being fixedly connected with the pulsator 201 so as to rotate the pulsator 201 through the connection part 202 by the driving motor.

The clothes stirring part and the motor shaft connecting part of the pulsator are respectively arranged into two mutually independent parts, so that the parts connected with different parts of the pulsator can be independently arranged and are made of materials with different rigidities, the weight of the pulsator is reduced, and the strength is improved; meanwhile, the parts of the impeller assembled with different parts are respectively arranged as independent components, so that the assembly efficiency of the impeller is improved, and the maintenance and replacement cost is reduced; more particularly, the splicing structure can be preassembled and installed through the same connecting part, so that the assembling speed and the assembling simplicity of the splicing and assembling impeller are improved.

As shown in fig. 1 to 6, in this embodiment, the blade 201 is disc-shaped, the connecting portion 202 is coaxially and fixedly mounted on one side of the blade 201, a connecting hole 20 extending along the axis of the pulsator 200 and penetrating the connecting portion 202 is provided at the center of the connecting portion 202, and an inner spline engaged with the pulsator shaft is provided on the inner wall of the connecting hole 20.

In this embodiment, an inwardly recessed mounting groove 9 is formed on one side of the blade 201, the connection portion 202 is correspondingly mounted in the mounting groove 9, the connection portion 202 is correspondingly in contact with the mounting groove 9, and the contact portion between the connection portion 202 and the blade 201 is fixedly connected via at least one bolt.

In this embodiment, the inner wall of the mounting groove 9 is in contact with the outer peripheral side of the connecting portion 202.

In this embodiment, at least one positioning groove recessed into the groove is provided at the groove bottom of the mounting groove 9, and the connecting portion 202 is provided with a positioning rib protruding and extending toward the groove bottom, and the positioning rib is correspondingly inserted into the positioning groove, so as to pre-position the mounting relative position of the blade 201 and the connecting portion 202.

In the embodiment, the connecting part 202 is formed by a disc-shaped connecting disc 10, a connecting sleeve 14 coaxially arranged is arranged at the center of the connecting disc 10, and a connecting hole 20 coaxially arranged with the connecting disc is formed in the connecting sleeve 14; preferably, sleeve-shaped reinforcing ribs 19 which axially protrude from two sides are arranged at the center of the connecting disc 10, and the connecting sleeve 14 is coaxially arranged in the sleeve-shaped reinforcing ribs 19.

In the embodiment, a circle of arc supporting ribs 13 protruding into the mounting groove are arranged in the middle of the connecting disc 10, a plurality of sections of radial supporting ribs 15 extending along the radial direction of the connecting disc 10 are arranged between the arc supporting ribs 13 and the connecting sleeve 14, each radial supporting rib 15 protrudes and extends towards the bottom of the mounting groove 9, and the extending ends of the arc supporting ribs 13 and the radial supporting ribs 15 are positioned on the same plane and correspondingly contact with the bottom of the mounting groove 9; the outer peripheral wall of the arc supporting rib 13 is correspondingly attached to and contacted with the inner wall surface of the side wall of the mounting groove 9.

In this embodiment, a circle of second arc supporting ribs 16 which are coaxially arranged and protrude from the arc supporting ribs 13 towards the same side direction are further arranged on the connecting disc 10, the extending arc diameter of the second arc supporting ribs 16 is smaller than that of the arc supporting ribs 13, and a screw column 17 is respectively arranged at the intersection of the second arc supporting ribs 16 and each radial supporting rib 15.

In this embodiment, the side surface of the connecting disc 10 between the circular arc supporting rib 13 and the peripheral edge of the connecting disc 10 is formed by a smooth annular surface 18, and the smooth annular surface 18 is correspondingly attached to the blade part 201 on the periphery of the opening of the mounting groove 9. Preferably, at least one screw column 17 protruding and extending towards one side of the blade 201 is arranged on the circular surface 18, grooves corresponding to the screw columns 17 are arranged on the blade 201, and the screw columns 17 on the circular surface 18 are inserted into the corresponding grooves in a one-to-one correspondence.

Example IV

In this embodiment, a description is given of a pulsator structure, which combines a pulsator structure formed by splicing the plurality of splicing structures described in the first and second embodiments with a pulsator structure in which the connecting portion and the blade portion are relatively and independently disposed in the third embodiment, and the specific structure is as follows:

as shown in fig. 1 to 6, in the present embodiment, there is described a pulsator structure in which a pulsator 200 includes a blade part 201 for agitating laundry, and a connection part 202 engaged with a pulsator shaft of a driving motor, the connection part 202 being fixedly connected with the blade part 201 to rotate the blade part through the connection part by the driving motor. The blade 201 of the impeller structure is formed by mutually splicing a plurality of mutually independent splicing structures 204 in sequence, the opposite sides of the adjacent splicing structures 204 are mutually overlapped and spliced, and the spliced positions are fixed through the connecting structures. Each splicing structure 204 forming the impeller structure blade 201 is fixedly connected to the same connecting portion 202.

The wave wheel formed by a plurality of splicing structures is preassembled and installed through the connecting disc, so that the assembling speed and the assembling simplicity of the spliced and assembled wave wheel are improved.

in this embodiment, the connection part 202 is a connection disc 10 arranged at the center of the pulsator 200 and close to one side of the inner cylinder bottom 101, and one side of the connection disc 10 is fixedly connected with the center of each fan-shaped structure 1; preferably, one side of the connecting disc 10 is correspondingly attached to and contacted with the center of each fan-shaped structure 1, and the corresponding attached positions of the connecting disc 10 and the center of each fan-shaped structure 1 are respectively connected through at least one bolt.

In this embodiment, the connection pad 10 is connected with each fan-shaped structure 1 through at least one bolt, and the joint overlapping portion of each adjacent fan-shaped structure 1 is connected with the connection pad 10 through at least one bolt. Preferably, the overlapped and spliced parts of the adjacent fan-shaped structures 1 are fixedly connected through at least one bolt respectively, and the fan-shaped structures 1 are fixedly connected with the connecting disc 10 through at least one bolt respectively; further preferably, at least one bolt connected at the overlapping joint of each adjacent fan-shaped structure 1 is also fixedly connected with the connecting disc 10, so that the at least one bolt sequentially penetrates through the two adjacent spliced fan-shaped structures and the connecting disc, and the cover bolt fixedly connects the two fan-shaped structures with the connecting disc.

Example five

As shown in fig. 1 to 6, in the present embodiment, a pulsator structure is described, a pulsator 200 is in a disc shape, a circle of folded edges 2 bent to one side of the pulsator is provided on the outer circumference of the disc-shaped pulsator 200, and the folded edges 2 extend in a direction parallel to the central axis of the pulsator 200.

The folding edge bending towards the side of the cylinder opening of the inner cylinder is arranged on the periphery of the impeller, so that when the impeller is selected in the drum washing machine, relative displacement is generated between the outer Zhou Shebian of the impeller and the wall of the inner cylinder, and kneading acting force is applied to clothes in the inner cylinder, which are in wall-attached motion, so that the washing efficiency of the drum washing machine is improved.

In this embodiment, the extending end of the peripheral flange 2 of the pulsator 200 is provided with a circle of supporting flange 3 protruding outwards along the radial direction of the pulsator 200, so that the pulsator is in spacing contact with the radially protruding supporting portion 4 on the inner cylinder 100 wall of the drum washing machine through the supporting flange 3, and further, the supporting flange 3 and the supporting portion 4 which are in contact are utilized to provide a spacing effect for the pulsator 200, so that the pulsator rotating in the inner cylinder can reduce axial vibration.

In this embodiment, a circle of limiting ribs 6 protruding towards the opposite direction of the extension of the folded edge 2 is provided on the supporting folded edge 3, and the extending shape of the limiting ribs 6 is concentric with the center of the pulsator 200, so that the limiting ribs 6 of the pulsator 200 are correspondingly inserted into the limiting grooves 5 provided on the inner cylinder supporting portion 4, so as to achieve the corresponding insertion of the pulsator and the inner cylinder in the circumferential rotation direction, and avoid the displacement of the pulsator along the radial direction of the pulsator.

In this embodiment, the pulsator 200 is provided with a plurality of water permeable holes penetrating through the pulsator, and each water permeable hole communicates two sides of the pulsator 200, so that after the cross section of the inner drum 100 is covered by the pulsator 200, the washing water can flow through the pulsator 200 and in the inner drum 100 of the drum washing machine at will through the water permeable holes.

In this embodiment, the drum washing machine is further described, the impeller structure is mounted at the bottom 101 of the inner drum in a covering manner, the periphery of the impeller 200 extends to the inner wall of the inner drum 100, the periphery of the impeller 200 is not in contact with the inner wall of the inner drum 100, the impeller 200 and the inner drum 100 are respectively connected with the driving motor of the washing machine through the clutch mechanism, so that the inner drum 100 and the impeller 200 can rotate at a differential speed to generate a kneading force to wash clothes.

In this embodiment, the flange 2 provided on the outer periphery of the pulsator 200 extends toward the opening of the inner drum 100, and a certain gap is formed between the flange 2 provided on the outer periphery of the pulsator 200 and the inner wall of the inner drum 100, so that the flange 2 provided on the pulsator 200 protrudes and extends toward the side of the inner drum 100 where the clothes are placed, and the position corresponding to the wall of the inner drum 100 of the flange 2 is always located at the side of the inner drum 100 where the clothes are placed, thereby achieving the purpose of providing a kneading and washing force for the clothes by using the relative displacement between the flange 2 on the outer periphery of the pulsator 200 and the wall of the inner drum 100.

In the embodiment, a circle of supporting parts 4 protruding towards the center are arranged on the inner wall of the inner cylinder 100, and one side of the supporting parts 4 away from the inner cylinder bottom 101 is in corresponding limiting contact with the outer periphery of the impeller 200; preferably, the supporting part 4 is arranged at one side close to the inner cylinder bottom 101; further preferably, the supporting portion 4 is annular, the outer peripheral wall of the annular supporting portion 4 is fixedly connected with the inner wall of the inner cylinder 100, and one side of the annular supporting portion 4 away from the inner cylinder bottom 101 is in corresponding limit contact with the supporting flange 3 on the outer periphery of the pulsator 200.

In the embodiment, a circle of limiting grooves 5 are formed in one side, far away from the inner barrel bottom 101, of the supporting portion 4, limiting ribs 6 protruding towards the inner barrel bottom 101 are arranged on one side, close to the inner barrel bottom 101, of the periphery of the pulsator 200, and the limiting ribs 6 are correspondingly inserted into the limiting grooves 5; preferably, the extending end of the peripheral folded edge of the impeller 200 is provided with a circle of supporting folded edge 3 which is bent outwards along the radial direction of the impeller 200, one side of the supporting folded edge 3, which is close to the inner cylinder bottom 101, is in limiting contact with the supporting part 4, and the supporting folded edge 3 is provided with a limiting rib 6 which is correspondingly inserted into the limiting groove 5; further preferably, after the limit rib 6 on the support flange 3 is correspondingly inserted into the limit groove 5, a certain gap is formed between the support flange 3 and the support part 4, so as to reduce friction force in the rotation process of the impeller.

In this embodiment, in order to improve the relative acting force between the flange 2 and the wall of the inner cylinder 101 and increase the rubbing and washing efficiency for clothes, the flange 2 on the outer periphery of the pulsator 200 may have a certain extension length in the direction parallel to the axis of the inner cylinder 100, so that the flange 2 formed on the outer periphery of the pulsator 200 encloses a groove covering the lower part of the inner cylinder 100 and arranged at the opening side of the inner cylinder 100, thereby achieving the purposes of arranging a stirring cylinder in the inner cylinder and increasing the rubbing and washing force for clothes; preferably, the extending length of the peripheral flange 2 of the pulsator 200 is less than half of the axial length of the inner drum 100, so as to ensure that the rubbing position between the extending end of the pulsator flange and the inner drum wall is located in the area where the clothes are most distributed, thereby improving the washing efficiency.

Example six

As shown in fig. 1 to 6, in the present embodiment, there is a pulsator structure in which a plurality of concave-convex structures 203 are provided at the outer circumference of a disc-shaped pulsator 200 to rub and wash laundry in a drum 100 by using a rotating force during the rotation of the pulsator 200.

The concave-convex structure is arranged on the periphery of the pulsator so as to improve the kneading acting force of the pulsator on clothes in the drum washing machine and achieve the aim of improving the washing efficiency of the drum washing machine.

In this embodiment, the concave portions 8 and the convex portions 7 are alternately arranged at the outer periphery of the disc-shaped pulsator 200 in turn along the circumferential direction in which the pulsator 200 rotates, so as to maximize the rubbing efficiency of the pulsator on the laundry and further improve the washing cleanliness of the drum washing machine; preferably, the concave portion 7 and the convex portion 8 extend in the radial direction of the disk-shaped pulsator 200.

In this embodiment, the periphery of the disc-shaped pulsator 200 is provided with a circle of folded edges 2 bent to one side, and the folded edges 2 are provided with height differences in the radial direction and/or the axial direction of the pulsator 200, so that the corrugated edges on the periphery of the pulsator form a concave-convex structure 203, and the concave-convex structure 203 arranged on the folded edges 2 on the periphery of the pulsator 200 is utilized to rub clothes during the rotation of the pulsator 200, so that the rubbing force of the pulsator on the clothes is further improved.

In this embodiment, the extending end of the folded edge 2 is in a wave shape with concave-convex arrangement, so as to form a wave-shaped curved surface with a height difference in the axial direction of the impeller on the folded edge 2, and the wave-shaped curved surface forms a concave-convex structure 203 of the peripheral part of the impeller.

In this embodiment, the inner periphery of the folded edge 2 is provided with a multi-stage protruding portion protruding toward the center of the pulsator 200, so that a concave-convex curved surface having a height difference in the radial direction of the pulsator is formed on the folded edge 2, and a concave-convex structure 203 having a function of enhancing the washing and kneading force on the laundry is formed on the inner peripheral side surface of the folded edge 2.

In this embodiment, the protruding parts on the impeller flange 2 are arranged in the same radial section of the impeller 200 in one-to-one correspondence with the protruding parts 7 of the impeller 200 protruding toward the flange 2; preferably, the convex part 7 in the same radial section is communicated with the convex part, and is communicated with the convex part to form a convex bulge towards the clothes washing side, so that the rubbing washing efficiency of the pulsator is further improved.

In this embodiment, each concave-convex structure 203 on the disc-shaped pulsator 200 is arranged symmetrically with respect to the center of the pulsator 200; preferably, each convex part 7 arranged on the peripheral folded edge 2 of the pulsator 200 is symmetrically arranged relative to the center of the pulsator, so as to ensure that the center of the pulsator coincides with the gravity center, and reduce the vibration amplitude in the rotating process of the pulsator.

Example seven

As shown in fig. 1 to 6, this embodiment describes a fan-shaped structure 1 for splicing the pulsator 200, which is applied to the above embodiment, and both sides of the fan-shaped structure 1 are extended linearly, and the peripheral sides are extended in circular arcs.

In this embodiment, the central portion and the peripheral portion of the fan-shaped structure 1 are respectively in planes with different heights, the central portion is disposed away from the inner drum bottom 101 side of the drum washing machine relative to the peripheral portion, the middle portion of the fan-shaped structure 1 is a tapered transition surface, and two ends of the tapered transition surface are respectively connected with the edge of the outer Zhou Buna and the outer edge of the central portion. Preferably, the two ends of the middle part of the fan-shaped structure 1 are respectively connected with the edge of the outer Zhou Buna and the outer edge of the central part through arc transition surfaces. Therefore, the fan-shaped structures 1 are spliced in sequence to form the side parts of the disc-shaped impeller, the center of each fan-shaped structure forms the groove bottom, and the middle of each fan-shaped structure forms the mounting groove 9 of the groove side wall.

In this embodiment, the two sides of the fan-shaped structure 1 are respectively a first splicing part 11 and a second splicing part 12, the first splicing part 11 and the second splicing part 12 of the fan-shaped structure 1 are respectively corresponding to and overlapped with the second splicing part 12 of the left adjacent fan-shaped structure 1 and the first splicing part 11 of the right adjacent fan-shaped structure 1, and the overlapped and abutted parts are fixed through a connecting structure.

In this embodiment, the first splicing portion 11 and the second splicing portion 12 are formed by extending edges protruding outwards along the circular arc direction of the pulsator 200, and the surface of the extending edge of the first splicing portion 11 and the lower surface of the extending edge of the second splicing portion 12 are three planes which sequentially descend in height along the radial direction of the pulsator 200 towards the peripheral side direction of the pulsator 200, and each plane corresponds to the central part, the middle part and the peripheral part of the fan-shaped structure 1 respectively; at least one bolt hole 21 is provided on each of the three planes of the first and

second splice parts

11 and 12. Preferably, the outermost end of the extending edge of the first splicing part 11 is provided with a convex rib protruding towards the side of the folded edge 1 of the impeller 200, and at least one bolt hole 21 is arranged at the convex rib, so that the peripheral folded edges of the two adjacent fan-shaped structures are connected and fixed through bolts.

Example eight

The difference between this embodiment and the above embodiment is that: in this embodiment, each splicing structure forming the pulsator may be any shape, but all the following requirements are required to be satisfied: the splicing structures are mutually spliced to form the structure of the disc-shaped impeller.

Meanwhile, in this embodiment, each splicing structure forming the pulsator may have the same shape or at least two different shapes. When the impeller is formed by mutually splicing at least two splicing structures with different shapes, the splicing structures with different shapes are mutually spliced in sequence, and can be spliced to form a complete disc-shaped impeller.

Example nine

In this embodiment, a drum washing machine is described, in which the pulsator of any one of the first to eighth embodiments is mounted in an inner tub of the drum washing machine, an outer periphery of the pulsator extends to an inner tub wall, and the outer periphery of the pulsator is not in contact with the inner tub wall, and the pulsator and the inner tub are respectively connected to a washing machine driving motor via a clutch mechanism, so that the inner tub and the pulsator can rotate at a differential speed to generate a kneading force to wash laundry.

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 and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.

Claims

1. A drum washing machine, comprising: an inner cylinder driven to rotate by the driving force; the method is characterized in that: the inner cylinder is internally provided with a pulsator, the periphery of the pulsator extends to the inner wall of the inner cylinder, the periphery of the pulsator is not contacted with the inner wall of the inner cylinder, and the pulsator and the inner cylinder are respectively connected with a driving motor of the washing machine through a clutch mechanism, so that the inner cylinder and the pulsator can rotate in a differential speed to generate kneading acting force to wash clothes;

the corrugated wheel is formed by sequentially splicing a plurality of splicing structures, the splicing structures are fan-shaped, each splicing structure is a fan-shaped structure with the same shape, and two sides of each fan-shaped splicing structure are sequentially connected end to form a disc-shaped corrugated wheel in an encircling mode;

the side edges of the splicing structures are overlapped with the corresponding side edges of the adjacent splicing structures, and the overlapped parts are fixedly connected through the connecting structures, so that the splicing structures are sequentially and fixedly connected to form a disc-shaped impeller;

the two sides of the splicing structure are respectively composed of a first splicing part and a second splicing part, and the first splicing part is a lower extending edge which protrudes outwards along the circular arc direction of the impeller from one side of the impeller, which is close to the bottom of the inner cylinder; the second splicing part is an upper extending edge which protrudes outwards along the circular arc direction of the impeller from one side of the impeller away from the bottom of the inner cylinder, the upper extending edge and the lower extending edge are staggered in the thickness direction, and one side of the upper extending edge, which is close to the bottom of the inner cylinder, and one side of the lower extending edge, which is away from the bottom of the inner cylinder, are positioned on the same horizontal plane;

the first splicing part and the second splicing part of the splicing structure are respectively in corresponding overlapping butt joint with the second splicing part of the adjacent splicing structure on the left side and the first splicing part of the adjacent splicing structure on the right side, and the overlapping butt joint parts are fixed through the connecting structure;

the upper periphery of the impeller is provided with a plurality of sections of concave-convex structures, each concave-convex structure forms a wavy curved surface with a height difference in the axial direction of the impeller at one side of the impeller far away from the bottom of the inner cylinder, and each concave-convex structure is symmetrically arranged relative to the center of the impeller;

the fan-shaped structure comprises a central part and an outer peripheral part, the central part and the outer peripheral part are planes at different heights respectively, the central part is arranged far away from the bottom side of the inner cylinder of the drum washing machine relative to the outer peripheral part, the middle part of the fan-shaped structure is a conical transition surface, and two ends of the conical transition surface are connected with the edge of the outer Zhou Buna and the outer edge of the central part respectively;

the first splicing part and the second splicing part are formed by extending edges protruding outwards along the circular arc direction of the impeller, the lower surfaces of the extending edges of the first splicing part and the second splicing part are three planes which sequentially descend along the radial direction of the impeller to the peripheral side direction of the impeller, and each plane corresponds to the central part, the middle part and the peripheral part of the fan-shaped structure respectively.

2. The drum washing machine as claimed in claim 1, wherein: the impeller is arranged at the bottom of the inner cylinder in a covering manner, and the impeller and the inner cylinder are coaxially arranged and mutually independent and rotate around a common axis.

3. The drum washing machine as claimed in claim 2, wherein: the periphery of the impeller is provided with a circle of folded edges extending towards the direction of the cylinder opening of the inner cylinder, and a certain gap is reserved between the periphery of the folded edges and the inner wall of the inner cylinder.

4. A drum washing machine as claimed in any one of claims 1 to 3, wherein: the inner wall of the inner cylinder is provided with a circle of supporting part protruding towards the center, and one side of the supporting part away from the bottom of the inner cylinder is in corresponding limiting contact with the periphery of the impeller.

5. The drum washing machine as claimed in claim 4, wherein: one side of the supporting part far away from the bottom of the inner cylinder is provided with a circle of limiting groove, one side of the periphery of the impeller near the bottom of the inner cylinder is provided with a limiting rib protruding towards the bottom direction of the inner cylinder, and the limiting rib is correspondingly inserted into the limiting groove.

6. The drum washing machine as claimed in claim 5, wherein: the extending end of the outer peripheral folded edge of the impeller is provided with a circle of supporting folded edge which is bent outwards along the radial direction of the impeller, one side of the supporting folded edge, which is close to the bottom of the inner cylinder, is in limiting contact with the supporting part, and the supporting folded edge is provided with a limiting rib which is correspondingly inserted into the limiting groove.

7. A drum washing machine as claimed in any one of claims 1 to 3, wherein: the splicing overlapping parts of the adjacent splicing structures are fixedly connected through a connecting structure or directly.

8. A drum washing machine as claimed in any one of claims 1 to 3, wherein: the impeller also comprises a connecting disc arranged at the center of the impeller and close to one side of the bottom of the inner cylinder, one side of the connecting disc away from the bottom of the inner cylinder is correspondingly attached to and contacted with each splicing structure, and the corresponding overlapping part of the connecting disc and each splicing structure is connected through at least one bolt.