CN108396504B

CN108396504B - Drum washing machine

Info

Publication number: CN108396504B
Application number: CN201710065692.1A
Authority: CN
Inventors: 赵志强; 许升
Original assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Priority date: 2017-02-06
Filing date: 2017-02-06
Publication date: 2021-08-20
Anticipated expiration: 2037-02-06
Also published as: WO2018141298A1; EP3578705A4; EP3578705A1; CN108396504A; EP3578705B1; US20200232137A1; JP2020513196A

Abstract

The invention relates to the technical field of washing machines, in particular to a drum washing machine. The washing machine comprises a washing machine shell, wherein a washing drum is arranged in the washing machine shell and comprises a front washing drum and a rear washing drum, the front washing drum is hermetically connected with the rear washing drum and can rotate relative to the rear washing drum, the front washing drum rotates along with a motor, and the rear washing drum is static relative to the front washing drum. The front washing drum can rotate relative to the rear washing drum, so that the washed clothes and water in the washing drum can be driven to rotate, the clothes are lifted, dropped and beaten, and the clothes washing effect is achieved. Because the washing drum does not have the branch of inner tube and urceolus, and then the outer wall of washing drum can not appear filling with water, especially the water after the laundry, and then can prevent that the dirt from piling up on the outer wall of washing drum, realize that the outer wall of washing drum is exempted from to wash, saved simultaneously and existed water between original washing drum inner tube and the urceolus, further save water.

Description

Drum washing machine

Technical Field

The invention relates to the technical field of washing machines, in particular to a drum washing machine.

Background

In the prior art, a drum washing machine comprises an inner drum and an outer drum, a user can keep the inner drum of the washing machine clean in the washing and maintenance process of the washing machine, but the outer drum is sleeved outside the washing drum (namely the inner drum), so that an interlayer is arranged between the inner drum and the outer drum at intervals, namely a washing machine tank, the washing machine tank is a place for storing dirt and dirt, the user cannot remove the inner drum and the outer drum to clean the outer wall of the inner drum and the inner wall of the outer drum, and meanwhile, residual water in the inner drum and the outer drum is not easy to clean and evaporate when the washing machine works, so that a great amount. The longer the time is, the more the dirt is attached, the firmer the dirt is, the secondary pollution of the clothes can be caused, and the health of the consumers is seriously threatened. Therefore, the user needs to ask a professional technician who professionally cleans the washing machine to clean the washing machine at regular intervals, which is time-consuming and labor-consuming.

Therefore, how to provide a washing machine can solve the technical problem that the washing machine barrel needs to be cleaned regularly in the prior art, which is needed to be solved by the technical personnel in the field.

Disclosure of Invention

The invention aims to provide a drum washing machine, which can solve the problem that the drum of the washing machine in the prior art needs to be cleaned regularly.

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

the drum washing machine comprises a washing machine shell, wherein a washing drum is arranged in the washing machine shell and comprises a washing front drum and a washing rear drum, the washing front drum is connected with the washing rear drum in a sealing mode and can rotate relative to the washing rear drum, the washing front drum rotates along with a motor, and the washing rear drum is static relative to the washing front drum.

The washing drum comprises a front washing drum and a rear washing drum, the front washing drum can rotate relative to the rear washing drum, the front washing drum and the rear washing drum are in dynamic sealing connection, and therefore washing clothes and water in the washing drum are moved and rotated, the clothes are lifted, dropped and beaten, and the function of washing the clothes is achieved. Because the washing drum does not have the branch of inner tube and urceolus, and then the outer wall of washing drum can not appear filling with water, especially the water after the laundry, and then can prevent that the dirt from piling up on the outer wall of washing drum, realize that the outer wall of washing drum is exempted from to wash, saved simultaneously and existed water between original washing drum inner tube and the urceolus, further save water.

Preferably, the post-wash tub length is less than the pre-wash tub length.

The length of the washing rear cylinder is less than that of the washing front cylinder, so that the washing rear cylinder can rotate when sufficient water is supplied, and the washing rate of the clothes is further ensured.

Preferably, one side of the washing machine shell is provided with an input opening, a door and a window are arranged at the input opening, one side of the washing front cylinder, which is close to the door and the window, is also provided with a sealing door for sealing the washing drum, the side wall of the washing front cylinder, which is in contact with the sealing door, or the side wall of the sealing door, which is in contact with the washing front cylinder, is provided with a sealing groove, and a first sealing ring is arranged in the sealing groove.

The purpose of setting up sealing door, sealed recess and first sealing washer is in order to seal the washing front drum, prevents that washing water from flowing out before the washing in-process of a section of thick bamboo rotation, guarantees that washing machine can accomplish the laundry task, and further protection washing machine can not leak and the trouble such as electric leakage, short circuit appear.

Preferably, the sealing door is connected with the washing front barrel.

The sealing door is connected with the washing front barrel, so that the sealing door can be separated from the door window, and the sealing door rotates along with the washing front barrel when the washing machine rotates, so that the problem of poor sealing effect between the door window and the washing front barrel can be effectively solved.

Preferably, a water inlet valve is arranged on the shell of the washing machine, the water inlet valve is connected with a detergent box through a water inlet pipeline, and the detergent box is connected with the water inlet hole through a water injection pipe.

Preferably, the central axis of the washing drum is inclined to the horizontal plane, the included angle between the central axis and the horizontal plane is alpha, and alpha is more than 0 and less than 90 degrees.

The inclined drum washing machine can better adapt to the requirements of users, and the clothes can be taken out without stooping. The drum and the horizontal plane have a certain inclination angle, so that the clothes can be conveniently taken and placed.

Preferably, the washing front cylinder is a nonporous structure cylinder.

Preferably, the inner side wall of the washing rear cylinder is provided with at least one lifting rib.

A certain number of lifting ribs are arranged in the washing rear barrel, so that clothes in the washing rear barrel are better lifted, dropped, beaten and washed.

Preferably, the washing front cylinder and the washing rear cylinder are connected through a rotating bearing, and a second sealing ring is arranged between the washing front cylinder and the washing rear cylinder.

Preferably, a limiting ring with an F-shaped section is arranged at the joint of the front washing barrel and the rear washing barrel;

the limiting ring comprises a first vertical limiting ring body, a first transverse limiting ring body arranged at the top of the first vertical limiting ring body and a second transverse limiting ring body arranged in parallel with the first transverse limiting ring body;

the second sealing ring is arranged between the first transverse limiting ring body and the second transverse limiting ring body, and the rotating bearing is arranged in a space area formed by combining the first vertical limiting ring body, the second transverse limiting ring body and the outer wall of the washing rear cylinder.

The sealing ring is arranged between the first transverse limiting ring body and the second transverse limiting ring body, namely the sealing ring is arranged in a rectangular closed space formed by the first transverse limiting ring body, the second transverse limiting ring body, the first vertical limiting ring body and the lower cylinder; the rolling bearing is arranged in a space area formed by combining the first vertical limiting ring body, the second transverse limiting ring body and the lower cylinder outer wall, and the arrangement not only can play a good sealing property, but also can ensure that the washing rear cylinder rotates relative to the washing front cylinder.

Preferably, the second seal ring is a lip seal ring.

Lip seal has the self sealss effect, relies on operating pressure effect lip for the lip compresses tightly sealed coupling surface, can the automatic compensation wearing and tearing volume moreover, has better leakproofness.

Preferably, a water inlet and a water outlet are formed in the washing rear cylinder, and the water outlet is connected with the water discharge valve through a water discharge connecting pipe.

Because the washing rear cylinder does not rotate, the problem that the connection part cannot be aligned or water leaks after alignment cannot occur when the water inlet hole and the water outlet hole are arranged on the washing rear cylinder.

Drawings

Fig. 1 is a schematic structural diagram of a drum washing machine provided in embodiment 1 of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

fig. 4 is a schematic structural diagram of a drum washing machine provided in embodiment 2 of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at C;

fig. 6 is a partial enlarged view of C in fig. 4 in another embodiment.

In the figure:

1. a washing machine housing; 11. a front panel; 12. a chassis; 13. ground feet; 14. a top deck plate; 15. a back panel; 21. washing the front barrel; 211. lifting the ribs; 212. sealing the groove; 213. a limiting ring; 2131. a first vertical spacing ring body; 2132. a first transverse limiting ring body; 2133. a second transverse limiting ring body; 22. washing the rear cylinder; 221. a water inlet hole; 222. a water outlet hole; 3. a belt; 4. a motor; 5. a drainage connecting pipe; 51. a drain valve; 52. a drain pipe; 61. a first seal ring; 62. a second seal ring; 7. a sealing door; 8. doors and windows; 9. a detergent box; 91. a water injection pipe; 92. a water inlet valve; 93. a water inlet pipe; 10. and rotating the bearing.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

Example 1

As shown in fig. 1 to 3, the present embodiment provides a drum washing machine which can omit periodic cleaning of dirt on the outer or inner wall of a washing tub, while saving more water. The drum washing machine comprises a washing machine shell 1, wherein a washing drum is arranged in the washing machine shell 1 and used for rotating and cleaning clothes, the washing drum comprises a front washing drum 21 and a rear washing drum 22, the front washing drum 21 is in dynamic sealing connection with the rear washing drum 22, the front washing drum 21 can rotate relative to the rear washing drum 22, the rear washing drum 22 is static in the rotating process of the front washing drum 21, and therefore water in the washing drum can be guaranteed to rotate along with the front washing drum 21, and the effect of washing the clothes is achieved; the washing front barrel 21 is connected with the motor 4 through the belt 3, the washing front barrel 21 rotates along with the motor 4, namely the belt 3 rotates along with the rotation of the motor 4, the washing front barrel 21 is driven to rotate, meanwhile, the washing rear barrel 22 keeps static, the washing rear barrel 22 is static, water injection and water drainage do not need to be positioned, therefore, the washing rear barrel 22 is provided with the water inlet 221 and the water outlet 222, and the water outlet 222 is connected with the water drainage valve 51 through the water drainage connecting pipe 5. After washing, the sewage enters the drain pipe 52 through the water outlet hole 222 and the drain valve 51 and is discharged out of the washing machine.

In order to make the water in the washing drum rotate along with the front washing drum 21, the length H of the rear washing drum 22 is smaller than the length H of the front washing drum 21 in the embodiment. Wherein the length of the post-washing drum 22 can be as small as possible, but it should be noted that the length of the post-washing drum 22 should not affect the arrangement of the water outlet holes 222 and the water inlet holes 221. The washing rear cylinder 22 can be flexibly fixed in the washing machine shell 1 through a spring and a damper, and can also be completely and rigidly fixed in the washing machine shell 1.

Wherein, the rear washing cylinder 22 and the front washing cylinder 21 are both non-porous cylinders, that is, no holes are provided on the side walls of the rear washing cylinder and the front washing cylinder, and the rear washing cylinder 22 is provided with a water inlet 221 and a water outlet 222. This kind of structure can guarantee that washing front drum 21 need not to fix a position just can water injection or drainage after rotatory. Can prevent water from flowing out from the side wall hole to cause the accumulation of dirt on the barrel wall and can save water. Meanwhile, the outer parts of the front washing barrel 22 and the rear washing barrel 21 are not soaked by water, so that the front washing barrel 21 is not subjected to the resistance of water passing through holes in the rotating process, and the rotation is smoother.

Meanwhile, the front washing drum 21 is a drum with a non-porous structure, after water is fed, the drainage pump or the drainage valve is not started and is in a sealed state, the detergent and the washing water are sealed in the front washing drum and the rear washing drum, and the washed clothes are also placed in the front washing drum and the rear washing drum. The structure can realize the design of integrating the water containing barrel and the clothes containing barrel, prevent water from flowing out of the outer wall of the washing barrel to cause dirt accumulation on the outer wall, and save water simultaneously.

The washing machine is characterized in that a throwing-in opening is formed in one side of the washing machine shell 1, a door window 8 is arranged at the throwing-in opening, a sealing door 7 is further arranged on one side, close to the door window 8, of the washing front barrel 21 and used for sealing the washing drum, the sealing door 7 is hinged to the washing front barrel 21, and therefore the sealing door 7 can be opened. A sealing groove 212 is formed in a side wall of the washing front barrel 21 contacting the sealing door 7 or a side wall of the sealing door 7 contacting the washing front barrel 21, and a first sealing ring 61 (refer to fig. 2) is arranged in the sealing groove 212. And further, after the sealing door 7 is closed, static sealing can be realized between the front washing drum 21, and the problem of water leakage of the washing drum is ensured. The user opens the door and the window 8 and then opens the sealing door 7, and the washing clothes can be taken and put.

Of course, in other embodiments, the sealing door 7 may be connected to the door window 8, and the sealing door 7 may rotate relative to the door window 8, that is, the sealing door 7 is connected to the door window 8 through a shaft, and the sealing door 7 can seal the front end of the washing front barrel 21, so that the two form a sealed chamber to prevent the washing water from flowing out. Thus, the sealing door 7 can be opened together by opening the door and the window 8, and further the washing clothes can be taken and put, so that the user can use the washing machine more conveniently.

The inner side wall of the washing front barrel 21 is provided with at least one lifting rib 211. The lifting ribs 211 are provided for lifting the clothes by the lifting ribs and then rapidly dropping the clothes in the washing process, so that the clothes inside the clothes can be better lifted and dropped to be beaten for washing.

In order to ensure that the rear washing cylinder 22 and the front washing cylinder 21 can rotate relatively, in this embodiment, the rear washing cylinder 22 and the front washing cylinder 21 are connected through a rotating bearing 10, wherein the rear washing cylinder 22 is sleeved on an inner ring of the rotating bearing 10, the front washing cylinder 21 is matched with an outer ring of the rotating bearing 10, and a second sealing ring 62 is arranged between the front washing cylinder 21 and the rear washing cylinder 22.

As shown in fig. 3, in order to prevent water leakage at the joint between the front washing drum 21 and the rear washing drum 22, a limiting ring 213 with an F-shaped cross section is arranged at the joint between the front washing drum 21 and the rear washing drum 22; the limiting ring 213 comprises a first vertical limiting ring body 2131, a first transverse limiting ring body 2132 arranged on the top of the first vertical limiting ring body 2131, and a second transverse limiting ring body 2133 arranged in parallel with the first transverse limiting ring body 2132; the second sealing ring 62 is disposed between the first transverse limiting ring body 2132 and the second transverse limiting ring body 2133, and the rotating bearing 10 is disposed in a space region formed by the combination of the first vertical limiting ring body 2131, the second transverse limiting ring body 2133 and the outer wall of the rear washing tube 22. The second seal ring 62 is a lip seal ring. The limiting ring 213 and the washing front barrel 21 are integrated, and the structure can further ensure better sealing between the washing front barrel 21 and the limiting ring 213.

The front washing drum 21 and the rear washing drum 22 are connected through the rotating bearing 10, the front washing drum 21 can be effectively ensured to rotate relative to the rear washing drum 22, meanwhile, a sealing ring is arranged between the rear washing drum 22 and the front washing drum 21, and the phenomenon that the water in the washing drum flows out of the drum to influence the work of the washing machine can be prevented.

When the washing front barrel 21 rotates and is in low-speed washing, the rotating speed is 0-200 r/min; when the high-speed dewatering and spin-drying are carried out, the rotating speed is 600-1800 rpm. The above-mentioned second sealing washer 62 is preferred lip type sealing washer, and this kind of sealing washer has self sealss effect, relies on operating pressure effect lip for the lip compresses tightly the sealed coupling face, can automatic compensation wearing and tearing volume moreover. The working pressure is derived from the pre-compression pressure of the front washing drum 21 and the rear washing drum 22, the gravity of the front washing drum 21 itself, and the working pressure of the internal liquid. The second seal 62 may be of the type Y, V, U, J or L.

The rotary connection (dynamic connection) of the front washing cylinder 21 and the rear washing cylinder 22 is a bearing connection, the front washing cylinder 21 and the rear washing cylinder 22 are respectively connected with an outer ring and an inner ring of the bearing, wherein the rotary bearing can be selected from various types, and the rotary bearing 9 covers all bearings, such as a ball bearing and a roller bearing. Specific bearing types are tapered roller bearings, cylindrical roller bearings, ball roller bearings, etc. In this embodiment, a tapered roller bearing is selected, wherein the tapered ball bearing includes a bearing inner race, a bearing bracket, a tapered roller, and a bearing outer race.

As shown in fig. 1, when the drum washing machine is filled with water, the water enters the washing machine through a water inlet valve 92 arranged on the washing machine housing 1, wherein the water inlet valve 92 is connected with a tap water pipeline, the water inlet valve 92 is connected with the detergent box 9 through a water inlet pipeline 93, and the detergent box 9 is connected with the water inlet hole 221 through a water filling pipe 91. The tap water passes through the water inlet valve 92, the water inlet pipeline 93 and the detergent box 9 in sequence and then enters the washing rear cylinder 22.

The bottom of the washing machine shell 1 is also provided with a chassis 12, the bottom of the chassis 12 is provided with feet 13 for supporting the whole washing machine, and the top of the washing machine shell 1 is provided with an upper table panel 14.

EXAMPLE 2

The difference between this embodiment and embodiment 1 is that the central axis of the washing drum is arranged obliquely with respect to the horizontal plane.

As shown in fig. 4, in order to achieve the convenience of taking and placing the clothes, wherein the central axis of the washing drum is inclined to the horizontal plane, the included angle between the central axis of the washing drum and the horizontal plane is α, and α is greater than or equal to 0 and less than 90 °.

In the embodiment shown in fig. 5, the rotary bearing 10 is a cylindrical roller bearing. Of course, other embodiments may also be ball bearings (see fig. 6).

It is noted that the foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.

Claims

1. A drum washing machine is characterized by comprising a washing machine shell (1), wherein a washing drum is arranged in the washing machine shell (1), the washing drum comprises a washing front drum (21) and a washing rear drum (22), the washing front drum (21) is hermetically connected with the washing rear drum (22), the washing front drum (21) can rotate relative to the washing rear drum (22), the washing front drum (21) rotates along with a motor (4), and the washing rear drum (22) keeps static;

the washing front barrel (21) is connected with the washing rear barrel (22) through a rotating bearing (10), the washing rear barrel (22) is sleeved on an inner ring of the rotating bearing (10), the washing front barrel (21) is matched with an outer ring of the rotating bearing (10), and a second sealing ring (62) is arranged between the washing front barrel (21) and the washing rear barrel (22).

2. A drum washing machine as claimed in claim 1, characterized in that the washing rear drum (22) length is smaller than the washing front drum (21) length.

3. The drum washing machine according to claim 1 or 2, characterized in that a feeding opening is arranged at one side of the washing machine shell (1), a door window (8) is arranged at the feeding opening, a sealing door (7) is further arranged at one side of the washing front drum (21) close to the door window (8) for sealing the washing drum, a sealing groove (212) is arranged on the side wall of the washing front drum (21) contacting the sealing door (7) or the side wall of the sealing door (7) contacting the washing front drum (21), and a first sealing ring (61) is arranged in the sealing groove (212).

4. A drum washing machine according to claim 3, characterized in that said sealing door (7) is connected with said washing front drum (21).

5. A drum washing machine according to claim 1, characterized in that the central axis of the washing drum is arranged inclined with respect to the horizontal plane, the central axis making an angle α with the horizontal plane, and 0 < α < 90 °.

6. A drum washing machine according to claim 1, characterized in that the washing front drum (21) is an imperforate drum.

7. A drum washing machine as claimed in claim 1, characterized in that the junction of the washing front drum (21) and the washing rear drum (22) is provided with a limiting ring (213) with an F-shaped section;

the limiting ring (213) comprises a first vertical limiting ring body (2131), a first transverse limiting ring body (2132) arranged at the top of the first vertical limiting ring body (2131) and a second transverse limiting ring body (2133) arranged in parallel with the first transverse limiting ring body (2132);

the second sealing ring (62) is arranged between the first transverse limiting ring body (2132) and the second transverse limiting ring body (2133), and the rotating bearing (10) is arranged in a space area formed by the combination of the first vertical limiting ring body (2131), the second transverse limiting ring body (2133) and the outer wall of the rear washing barrel (22).

8. A drum washing machine according to claim 7, characterized in that the second sealing ring (62) is a lip-shaped sealing ring.

9. A drum washing machine according to claim 1, characterized in that the washing rear drum (22) is provided with a water inlet hole (221) and a water outlet hole (222), and the water outlet hole (222) is connected with the drain valve (51) through a drain connecting pipe (5).