CN114753115A

CN114753115A - Drum washing machine

Info

Publication number: CN114753115A
Application number: CN202110022259.6A
Authority: CN
Inventors: 赵志强; 许升; 吕佩师
Original assignee: Qingdao Haier Drum Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Drum Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2022-07-15
Also published as: WO2022148232A1

Abstract

The invention discloses a drum washing machine, comprising: the front panel of the machine shell is provided with a throwing port; the outer cylinder is arranged in the machine shell, and an outer cylinder opening of the outer cylinder is opposite to the throwing opening; the inner cylinder is rotatably arranged in the outer cylinder and can independently contain washing water during washing; the machine door can be opened and closed and is arranged on the throwing-in opening of the front panel; the machine door comprises an outer cover for sealing the throwing opening, an outer cylinder cover for sealing the outer cylinder opening and an inner cylinder cover for sealing the inner cylinder opening, the outer cover is fixedly connected with the outer cylinder cover, and the inner cylinder cover is rotatably connected with the outer cover and/or the outer cylinder cover through a rotating assembly. The invention aims at the structural characteristics of different parts of the washing machine, simultaneously solves the sealing problem of the input port, the outer cylinder port and the inner cylinder port through the integrated machine door, and the inner cylinder cover and the inner cylinder port are fixedly connected and synchronously rotate.

Description

Drum washing machine

Technical Field

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

Background

In the prior art, a drum washing machine generally comprises an inner drum and an outer drum which are mutually sleeved, wherein the outer drum is sealed and used for containing water, and the inner drum is used for containing clothes and beating and washing the clothes by rotating the inner drum; meanwhile, the inner barrel is provided with dehydration holes, so that water in the outer barrel flows into the inner barrel through the dehydration holes to soak the clothes in the inner barrel, the water in the inner barrel flows out of the outer barrel through the dehydration holes, and moisture on the clothes in the inner barrel is discharged to the outer barrel through the dehydration holes when the inner barrel rotates at a high speed, so that the aim of washing the clothes is fulfilled.

However, because the inner cylinder and the outer cylinder are mutually sleeved, dirt is easily accumulated between the inner cylinder and the outer cylinder in the use process of the washing machine; meanwhile, because the inner drum and the outer drum are mutually sleeved, a user cannot clean the outer wall of the inner drum and the inner wall of the outer drum, so that bacteria in the washing machine are increased, and the washing efficiency of the washing machine and the cleanliness of washed clothes are reduced.

In order to solve the above problems, some patents are also proposed, such as the patent with application number 201410215346.3, which is named as the Chinese invention patent of a drum washing machine, and the invention relates to a drum washing machine, which comprises a box body, wherein an inner cylinder and an outer cylinder are arranged in the box body, a door seal is arranged between the outer cylinder and the box body, the inner cylinder is connected with a driving device, the inner cylinder is a non-porous inner cylinder, the inner cylinder is a conical cylinder with a small diameter at the cylinder bottom and a large diameter at the cylinder opening, the cylinder opening of the inner cylinder is inwards folded in an arc shape, a water inlet guide pipe is arranged on the door seal, one end of the water inlet guide pipe is connected with a washing water rapid heating device, the other end of the water inlet guide pipe penetrates through the door seal and extends into the inner cylinder, and a water outlet and a water pressure detection device are arranged on the outer cylinder. According to the technical scheme, the inner cylinder is a non-porous inner cylinder, water is fed into the inner cylinder through the water inlet guide pipe arranged on the door seal, and water is drained in the dehydration process through the shape of the inner cylinder, so that water can be prevented from being stored between the inner cylinder and the outer cylinder, and the water consumption for washing is greatly saved.

The invention provides a drum washing machine with a non-porous inner cylinder, which solves the problems of water storage waste between the inner cylinder and the outer cylinder and dirt accumulation between the inner cylinder and the outer cylinder, but because the inner cylinder is the non-porous inner cylinder, in order to realize the purpose of containing washing water, a washing machine door needs to be in dynamic sealing contact with a cylinder opening of the inner cylinder, but the dynamic sealing contact has the problems of low stability and effectiveness, poor sealing performance along with the increase of time and the like.

In view of this, the invention is provided to solve the problem of sealing the opening of the imperforate inner cylinder of the drum washing machine.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art, provide a drum washing machine without water between an inner drum and an outer drum, and effectively solve the problem of water filling in a sealing way of the inner drum.

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

a drum washing machine comprising:

the front panel of the machine shell is provided with a throwing port;

the outer cylinder is arranged in the machine shell, and an outer cylinder opening of the outer cylinder is opposite to the throwing opening;

the inner cylinder is rotatably arranged in the outer cylinder and can independently contain washing water during washing;

the machine door can be opened and closed and is arranged on the throwing-in opening of the front panel;

The machine door comprises an outer cover for sealing the feeding opening, an outer barrel cover for sealing the outer barrel opening and an inner barrel cover for sealing the inner barrel opening, wherein the outer cover is fixedly connected with the outer barrel cover, and the inner barrel cover is rotatably connected with the outer cover and/or the outer barrel cover through a rotating assembly.

Furthermore, a bearing seat is arranged on the inner wall of the outer cover, the rotating assembly comprises a rotating bearing arranged in the bearing seat and a rotating shaft sleeved in an inner ring of the rotating bearing, the bearing seat penetrates through the outer cylinder cover, and the rotating shaft is fixedly connected with the inner cylinder cover.

Furthermore, a dynamic seal oil seal which is in dynamic seal contact with the rotating shaft is arranged in the opening of the bearing seat, and a seal ring is arranged between the outer circumferential wall of the bearing seat and the outer cylinder cover.

Furthermore, the end part of the rotating shaft is fixedly connected with the center position of the inner cylinder cover through a fastening screw, and a screw sealing ring is arranged between the fastening screw and the fastening hole in the inner cylinder cover.

Furthermore, an inner cylinder sealing element is arranged on the inner cylinder opening, and when the machine door is closed, the inner cylinder cover is covered on the inner cylinder opening and keeps sealing contact with the inner cylinder sealing element, so that a water containing chamber capable of independently containing washing water is formed.

Further, the inner cylinder sealing element comprises an inner cylinder sleeving part sleeved on the outer circumferential wall of the inner cylinder opening and an inner cylinder sealing part which extends into the inner cylinder opening and is in sealing contact with the circumferential wall of the inner cylinder cover;

preferably, the inner cylinder sleeving part is sleeved on the outer circumferential wall of the inner cylinder opening through a hoop.

Furthermore, a sealing plaque is fixedly installed on the outer cylinder opening, and when the machine door is closed, the outer cylinder cover keeps sealing contact with the sealing plaque through a sealing mechanism.

Further, the sealing mechanism comprises an outer cylinder sealing element arranged on the opening of the outer cylinder, and when the machine door is closed, the outer cylinder sealing element is in annular sealing contact with the outer cylinder cover.

Furthermore, the outer cylinder sealing element comprises a matching part and a sealing part, an annular sealing groove is formed in the outer wall of the cylinder opening of the outer cylinder, the sealing decorative plate is fixedly installed on the outer wall of the cylinder opening of the outer cylinder through a connecting piece, and the matching part is extruded into the sealing groove; when the machine door is closed, the sealing part and the outer cylinder cover are in annular sealing contact.

Furthermore, the sealing mechanism comprises an elastic sealing ring arranged on the outer cover, and when the machine door is closed, the elastic sealing ring keeps annular sealing contact with the outer surface of the sealing decorative plate;

Preferably, a magnet is arranged on one side, in contact with the sealing decoration plate, of the elastic sealing ring, and when the machine door is closed, the magnet is adsorbed on the sealing decoration plate, so that the elastic sealing ring is in annular sealing contact with the outer surface of the sealing decoration plate.

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

The machine door comprises an outer cover for sealing the input opening, an outer cylinder cover for sealing the outer cylinder opening and an inner cylinder cover for sealing the inner cylinder opening, wherein the outer cover is fixedly connected with the outer cylinder cover, the inner cylinder cover is rotatably connected with the outer cover and/or the outer cylinder cover through a rotating assembly, aiming at the structural characteristics of different parts of the washing machine, the sealing problems of the input opening, the outer cylinder opening and the inner cylinder opening are simultaneously solved through the integrated machine door, and the inner cylinder cover and the inner cylinder opening are fixedly connected and synchronously rotate.

The following describes 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, 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 without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic structural view of a drum washing machine according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged view of the inner cylinder sealing element and the outer cylinder sealing element in the embodiment of the invention;

FIG. 4 is an enlarged view of the assembly among the outer cap, the outer cap and the inner cap according to the embodiment of the present invention.

In the figure: 1. a control panel; 2. a housing; 3. a throwing port; 4. a front panel; 5. footing; 6. an outer cover; 7. an outer cylinder cover; 8. a detergent putting box; 9. a rotating shaft; 10. a rotating shaft seat; 11. a rotating shaft seat screw; 12. a water inlet channel; 13. lifting the ribs; 14. an inner barrel; 15. an outer cylinder; 16. a drive shaft; 17. a drive motor; 18. a lock housing screw; 19. a latch hook; 20. a counterweight ring in front of the outer cylinder; 21. sealing the decorative plate; 22. an outer barrel seal; 23. an inner barrel sealing element; 24. a blocking portion; 25. a sheathing part; 26. flanging; 27. a sealing part; 28. a fitting portion; 29. a sealing groove; 30. a connecting member; 31. sinking a groove; 32. an inner cylinder cover; 33. an inner cylinder sealing part; 34. an inner cylinder sheathing part; 35. clamping a hoop; 36. a rotating bearing; 37. an outer ring; 38. a support; 39. a ball bearing; 40. an inner ring; 41. a bearing seat; 42. a rotating shaft; 43. fastening screws; 44. dynamic sealing oil seal; 45. a seal ring; 46. an elastic sealing ring.

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

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed 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 otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

As shown in fig. 1 to 4, the present invention provides a drum washing machine including:

a casing 2, wherein a front panel 4 of the casing 2 is provided with a feeding port 3;

an outer cylinder 15 disposed in the casing 2, an outer cylinder opening of the outer cylinder 15 being opposed to the input port 3;

an inner tub 14 rotatably disposed in the outer tub 15 and independently containing washing water during washing;

and a machine door which can be opened and closed and is arranged on the input port 3 of the front panel 4;

the machine door comprises an outer cover 6 for sealing the throwing opening, an outer cylinder cover 7 for sealing the outer cylinder opening and an inner cylinder cover 32 for sealing the inner cylinder opening, the outer cover 6 is fixedly connected with the outer cylinder cover 7, and the inner cylinder cover 32 is rotatably connected with the outer cover 6 and/or the outer cylinder cover 7 through a rotating assembly.

The inner barrel 14 of this embodiment is the sclausura inner barrel that does not set up the dehydration hole on the section of thick bamboo wall, during the washing, independently hold the washing water in the inner barrel 14, and the inner barrel 14 rotates and carries out the clothing washing, independently holds water in the inner barrel 4, has solved the washing water of current washing machine and has entered into between inner barrel and the urceolus, and along with the accumulation of time, the problem of the outer wall of inner barrel and the inner wall of urceolus "dirty and dirty holding" easily.

The outer cylinder of the existing drum washing machine is mainly used for containing water, and the outer cylinder is fixed and generally sealed by the sealing connection of the outer cylinder and a machine body. While the drum washing machine of the present embodiment creatively designs the inner drum 14 as a non-porous inner drum for containing the washing water, since the inner drum 14 is horizontally placed, the present embodiment needs to seal the inner drum opening of the inner drum 14. Therefore, the machine door of this embodiment is including being used for the closing cap put in mouthful enclosing cover 6, be used for the outer cylinder cover 7 of the outer cylinder mouth of closing cap and be used for the interior cylinder cover 32 of closing cap interior cylinder mouth, enclosing cover 6 and outer cylinder cover 7 fixed connection, interior cylinder cover 32 through rotatable being connected of runner assembly and enclosing cover 6 and/or outer cylinder cover 7, to the structural feature of washing machine different parts, solve the sealed problem of putting in mouthful, outer cylinder mouth and interior cylinder mouth simultaneously through the machine door of integration, and fixed connection both synchronous rotations between interior cylinder cover 32 and the inner cylinder mouth, it is effectual for the sealed mode of dynamic seal, sealing stability is strong, and sealed life is longer.

As an embodiment of this embodiment, as shown in fig. 2 and fig. 4, a bearing seat 41 is disposed on an inner wall of the outer cover 6 of this embodiment, the rotating assembly includes a rotating bearing 36 installed in the bearing seat 41 and a rotating shaft 42 sleeved in an inner ring of the rotating bearing 36, the bearing seat 41 penetrates through the outer cylinder cover 7, and the rotating shaft 42 is fixedly connected with the inner cylinder cover 32. In the embodiment, the relative rotation between the inner cylinder cover 32 and the outer cover 6 and the outer cylinder cover 7 is realized through the rotating bearing 36, and the structure is simple and stable.

Further, the rotary bearing 36 of the present embodiment includes an outer ring 37, an inner ring 40, a bracket 38 disposed between the inner ring 40 and the outer ring 37, and balls 39 disposed on the bracket 38, wherein the outer ring 37 of the present embodiment is in interference fit with the mounting hole of the bearing housing 41, and the rotary shaft 42 of the present embodiment is in interference fit with the inner ring 40.

Further, a dynamic seal oil seal 44 which is in dynamic seal contact with the rotating shaft 42 is provided in the opening of the bearing housing 41 according to the embodiment, and a seal ring 45 is provided between the outer peripheral wall of the bearing housing 41 and the outer cylinder cover 7, so that water in the inner cylinder 14 can be prevented from leaking into the machine door through the connection gap.

In order to realize the connection between the rotating shaft 42 and the inner cylinder cover 32, the end of the rotating shaft 42 is fixedly connected with the center of the inner cylinder cover 32 through a fastening screw 43, and a screw seal ring is arranged between the fastening screw 43 and a fastening hole on the inner cylinder cover 32.

In order to solve the problem of sealing connection between the inner cylinder cover 32 and the inner cylinder opening, the inner cylinder opening described in this embodiment is provided with an inner cylinder sealing element 23, and when the door is closed, the inner cylinder cover 32 covers the inner cylinder opening and keeps sealing contact with the inner cylinder sealing element 23, so as to form a water containing chamber capable of independently containing washing water.

Further, the inner cylinder seal 23 includes an inner cylinder fitting portion 34 fitted on the outer peripheral wall of the inner cylinder opening and an inner cylinder seal portion 33 extending into the inner cylinder opening to be in sealing contact with the peripheral wall of the inner cylinder cover 32. Preferably, the inner cylinder fitting 34 is fitted to the outer peripheral wall of the inner cylinder opening via a band 35.

In order to solve the problem of sealing between the outer cylinder cover 7 and the outer cylinder opening, a sealing plaque 21 is fixedly installed on the outer cylinder opening in the embodiment, and when the machine door is closed, the outer cylinder cover 7 keeps sealing contact with the sealing plaque 21 through a sealing mechanism.

The roller washing machine of the embodiment cancels the mode that the existing window gasket is connected with the cylinder opening of the outer cylinder in a sealing way, and the cylinder opening of the outer cylinder is sealed by the sealing decoration plate 21 through the sealing mechanism and the sealing decoration plate 21 which are kept in sealing contact when the machine door is closed, thereby avoiding the problem that the existing roller washing machine window gasket is dirty in accumulation. In addition, the sealing plaque 21 of this embodiment can block the structure of the nozzle of urceolus for the nozzle of urceolus is neater pleasing to the eye more, promotes user's use experience.

As an implementation manner of the embodiment, the sealing mechanism includes an outer cylinder sealing member 22 disposed on the opening of the outer cylinder, and when the door is closed, the outer cylinder sealing member 22 maintains annular sealing contact with the outer cylinder cover 7. In the embodiment, the outer cylinder sealing element 22 is directly in annular sealing contact with the inner wall surface of the outer cylinder cover 7 to seal the cylinder opening of the outer cylinder of the machine door 6, the structure of the outer cylinder sealing element 22 is simpler, dirt is not easy to accumulate relative to a window gasket, and the sealing effect is increased by extruding the outer cylinder sealing element 22 and the cylinder opening of the outer cylinder when the machine door 6 is closed.

Further, the outer cylinder sealing element 22 comprises a matching part 28 and a sealing part 27, an annular sealing groove 29 is formed in the outer wall of the cylinder opening of the outer cylinder, the sealing decorative plate 21 is fixedly mounted on the outer wall of the cylinder opening of the outer cylinder 15 through a connecting piece 30, and the matching part 28 is extruded into the sealing groove 29; when the machine door is closed, the sealing part 27 keeps annular sealing contact with the outer cylinder cover 7.

In the drum washing machine of the present embodiment, the fitting portion 28 of the outer cylinder seal 22 is pressed into the seal groove 29 while the seal trim 21 is mounted, so that the outer cylinder seal 22 is mounted, and the mounting manner is simple and reliable. The sealing groove 29 of the present embodiment is disposed on the edge of the opening of the outer cylinder 15 corresponding to the back of the sealing plaque 21, and the matching portion 28 is an annular elastic body, and the annular elastic body is pressed into the sealing groove 29 while the sealing plaque 21 is installed.

Furthermore, the sealing plaque 21 of this embodiment has a sinking groove 31, a mounting hole is formed in the sinking groove 31, and the connecting element 30 passes through the mounting hole and is fixed in the sinking groove 31; the outer barrel seal 22 includes a blocking portion 24 extending into a countersink 31 for blocking the connector 30. The blocking portion 24 of the present embodiment recovers elastic deformation after the connection member 30 is installed, and shields the connection member 30 and the sinking groove 31, so as to achieve no visual sensation of the connection member and increase the aesthetic property thereof.

Preferably, the connecting member 30 of the present embodiment may use a fastening screw.

Furthermore, the edge of the sealing plaque 21 of the present embodiment has a flange 26, the sunken groove 31 is located inside the flange 26, the outer cylinder sealing member 22 includes a sleeve 25, an open groove sleeved on the flange 26 is formed inside the sleeve 25, a groove wall on one side of the open groove horizontally extends to form a blocking portion 24, and a groove wall on the other side of the open groove extends to form a matching portion 28 and a sealing portion 27 respectively. The flange 26 is arranged at the edge of the plaque 21 in the embodiment, so that the overall strength of the plaque 21 can be improved, deformation of the outer cylinder 15 during vibration is avoided, meanwhile, the flange 26 is sleeved with the outer cylinder sealing element, damage caused by the fact that a user contacts the flange 26 is avoided, and the overall attractiveness of the plaque 21 is improved.

As can be seen from the above, the drum washing machine of the present embodiment eliminates the window gasket, and the installation of the outer tub sealing member 22 is realized by installing the sealing trim at the tub opening of the outer tub, and the outer tub sealing member 22 maintains the sealing contact with the outer tub cover 7 when the door is closed, thereby realizing the sealing of the tub opening of the outer tub by the outer tub cover 7. Meanwhile, the drum washing machine of the present embodiment needs to further increase the sealing between the outer cover 6 and the sealing decoration plate 21, so as to increase the sealing effect, and specifically, as shown in fig. 2, the sealing mechanism of the present embodiment includes an elastic sealing ring 46 disposed on the outer cover 6, and when the door 6 is closed, the elastic sealing ring 46 maintains an annular sealing contact with the outer surface of the sealing decoration plate 21.

Further, the elastic sealing ring 46 includes a sealing body having a hollow elastically deformable chamber. In this way, the sealing contact is maintained by elastic deformation of the pressing sealing body when the door is closed. Preferably, the sealing body of the present embodiment has a plurality of elastically deformable chambers spaced apart from each other, increasing the range of elastic deformation, ensuring the sealing effect.

This embodiment elastic seal 46 include with sealing body integrated into one piece's buckle, enclosing cover 5 on have a draw-in groove, the buckle joint in the draw-in groove, realized elastic seal 46 and installed on enclosing cover 6.

Further, in the embodiment, a magnet is disposed on a side of the elastic sealing ring 46 contacting the seal trim 21, and when the door is closed, the magnet 34 is attracted to the seal trim 21 so that the elastic sealing ring 46 maintains annular sealing contact with the outer surface of the seal trim 21. The seal decoration plate 21 of the embodiment is made of a metal material, the elastic seal ring 46 of the embodiment is provided with a magnet, and the magnet 34 adsorbs the seal decoration plate 21 to keep a door closing state after the door is closed, and meanwhile, the sealing effect between the door and the elastic seal ring 46 is increased.

The outer cylinder cover 7 of the embodiment is sealed by keeping the outer cylinder sealing piece 22 in sealing contact with the cylinder opening of the outer cylinder 15, and the outer cover 6 is sealed by keeping the elastic sealing ring 46 in sealing contact with the sealing decoration plate 21, so that when the machine door 6 is closed, at least two seals from inside to outside are formed between the cylinder opening of the outer cylinder 15 and the outer cylinder cover 7 and between the sealing decoration plate 21 and the outer cover 6, the sealing effect of the machine door on the cylinder opening of the outer cylinder 15 is ensured, and water leakage is avoided.

As shown in fig. 2, the outer cover 6 of the present embodiment is rotatably mounted on the front panel 4 of the casing 2, the front panel at one side of the input port 3 is fixedly mounted with a rotating shaft seat 10 through a rotating shaft seat screw 11, one side of the outer cover 6 is mounted with a rotating shaft 9, and the rotating shaft 9 is rotatably mounted on the rotating shaft seat 10, so that the outer cover 6 is rotatably mounted on the front panel 4.

In this embodiment, a lock seat 19 is fixedly mounted on the front panel of the input port 3 on the side opposite to the rotating shaft seat 10 through a lock seat screw 18, and a lock hook is mounted on the outer cover 6 on the side opposite to the rotating shaft 9.

The elastic sealing ring 46 of the present embodiment is disposed corresponding to the rotating shaft 9 and the locking hook, so that the elastic sealing ring 46 can better act on the elastic sealing ring 46 for contact sealing after the outer cover 6 is closed and locked.

As an implementation mode of the embodiment, the outer cylinder 15 of the embodiment has an outer cylinder front counterweight ring 20 mounted at the cylinder opening, and the sealing plaque 21 blocks the outer cylinder front counterweight ring 20.

The cabinet 2 of the drum washing machine of the present embodiment includes: go up the deck plate, front panel 4, backplate and bottom plate, installed on the bottom plate and fixed footing 5 for support whole washing machine, front panel 4 upper portion sets up control panel 1 and detergent and puts in box 8.

The drum washing machine of this embodiment has an outer tub 15 inside the casing, and an inner tub 14 is coaxially disposed inside the outer tub 15. The outer cylinder is mainly intended to collect the drainage of the inner cylinder 14 and the drainage of the inner cylinder 14 by high-speed centrifugation. The drum 14 rotates, preferably with lifting ribs 13, and is continuously lifted to drop and beat the laundry, so as to wash the laundry. The inner barrel 14 is of non-porous construction.

The outer cylinder 15 is provided with a central mounting hole for mounting and fixing a bearing structure, a driving shaft 16 fixedly connected with the inner cylinder 14 penetrates through the bearing, the driving shaft 16 is connected with a driving motor 17, the driving shaft 16 is provided with a hollow water inlet channel 12, and a dynamic seal is designed between the water inlet pipe and the water inlet channel 12.

The drive motor 17 illustrated in the embodiment is illustrated by using a direct drive motor as an example, and similarly, the drive motor also has a structure in which water enters from the center of the shaft, and is not illustrated.

The holeless inner barrel of the drum washing machine has a taper, and the centrifugal valve is arranged at the position with the maximum taper. The centrifugal water on the conical surface moves and converges towards the centrifugal valve along the conical edge under the action of centrifugal force. The structure can effectively realize the high-efficiency dehydration property and the centrifugal drainage property of the non-porous inner cylinder.

The centrifugal valve of this embodiment may be opened at a speed of N, such as 100 rpm.

The drum washing machine of the present embodiment starts draining and dewatering after washing or rinsing is completed.

Drainage process of the drum washing machine of the embodiment:

under the condition that the eccentric amount is less than M1, the driving motor drives the inner cylinder to operate to the first rotating speed and maintains the first rotating speed for a certain time t1, the rotating speed is N1, and N1 is more than N.

For example, N is 110-400 rpm, preferably 170 + -50 rpm, and more preferably 150 + -20 rpm.

t1 ranges from 0.1 to 5 minutes, preferably from 1 to 2 minutes.

Most water in the inner barrel can be discharged out of the inner barrel, water distribution loads are effectively carried, uniform and distributed loads are effectively achieved, eccentricity is reduced, and vibration of follow-up high-speed dehydration is reduced.

Dewatering process of the drum washing machine of the embodiment:

when the rotating speed is gradually increased to the rated dehydration rotating speed (such as 1400 revolutions per minute), the centrifugal valve is opened under the action of centrifugal force, water contained in the clothes is centrifugally dehydrated and is centrifugally discharged, and centrifugal drainage is realized.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.

Claims

1. A drum washing machine characterized by comprising:

the front panel of the machine shell is provided with a throwing port;

the machine door comprises an outer cover for sealing the throwing opening, an outer cylinder cover for sealing the outer cylinder opening and an inner cylinder cover for sealing the inner cylinder opening, the outer cover is fixedly connected with the outer cylinder cover, and the inner cylinder cover is rotatably connected with the outer cover and/or the outer cylinder cover through a rotating assembly.

2. A drum washing machine according to claim 1, characterized in that a bearing seat is provided on the inner wall of the outer cover, the rotating assembly comprises a rotating bearing installed in the bearing seat and a rotating shaft sleeved in the inner ring of the rotating bearing, the bearing seat passes through the outer drum cover, and the rotating shaft is fixedly connected with the inner drum cover.

3. A drum washing machine according to claim 2, characterized in that a dynamic seal oil seal is provided in the opening of the bearing housing to maintain dynamic seal contact with the rotating shaft, and a seal ring is provided between the outer peripheral wall of the bearing housing and the outer drum cover.

4. A drum washing machine as claimed in claim 2, characterized in that the end of the rotating shaft is fixedly connected with the center of the inner drum cover through a fastening screw, and a screw sealing ring is arranged between the fastening screw and the fastening hole on the inner drum cover.

5. A drum washing machine according to any one of claims 1-4, characterized in that an inner drum sealing element is arranged on the inner drum opening, when the machine door is closed, the inner drum cover is covered on the inner drum opening and keeps sealing contact with the inner drum sealing element, and a water containing chamber capable of independently containing washing water is formed.

6. A drum washing machine according to claim 5 characterized in that the inner drum sealing member comprises an inner drum housing part which is housed on the outer peripheral wall of the inner drum opening and an inner drum sealing part which extends into the inner drum opening and is in sealing contact with the peripheral wall of the inner drum cover;

7. A drum washing machine according to any one of claims 1-4, characterized in that a sealing plaque is fixedly arranged on the outer drum opening, and when the machine door is closed, the outer drum cover keeps sealing contact with the sealing plaque through a sealing mechanism.

8. A drum washing machine according to claim 7, characterized in that the sealing mechanism comprises a tub seal provided on the mouth of the tub, the tub seal being in annular sealing contact with the tub cover when the door is closed.

9. A drum washing machine according to claim 8, characterized in that the outer drum sealing member comprises a fitting part and a sealing part, an annular sealing groove is formed in the outer wall of the opening of the outer drum, the sealing decorative plate is fixedly mounted on the outer wall of the opening of the outer drum through a connecting piece, and the fitting part is extruded into the sealing groove; when the machine door is closed, the sealing part and the outer cylinder cover are in annular sealing contact.

10. A drum washing machine according to claim 8, characterized in that the sealing mechanism comprises an elastic sealing ring arranged on the outer cover, and when the machine door is closed, the elastic sealing ring keeps annular sealing contact with the outer surface of the sealing plaque;

preferably, a magnet is arranged on one side of the elastic sealing ring, which is in contact with the sealing decoration plate, and when the machine door is closed, the magnet is adsorbed on the sealing decoration plate to enable the elastic sealing ring to be in annular sealing contact with the outer surface of the sealing decoration plate.