CN113699734A

CN113699734A - Drum washing machine without outer drum

Info

Publication number: CN113699734A
Application number: CN202111183824.3A
Authority: CN
Inventors: 张强; 周鑫林; 袁阿辉
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2021-11-26

Abstract

The invention provides a drum washing machine without an outer drum. The drum washing machine without outer tub includes: a housing; the device comprises a barrel, a feeding port and a discharging port, wherein one end of the barrel is provided with the feeding port; the elastic support component is arranged in the shell and connects the cylinder with the inner wall of the shell; the balancing weight is arranged on one side of the elastic supporting component close to the putting opening. The invention solves the problem that the internal structure layout of the drum washing machine without the outer drum in the prior art is difficult.

Description

Drum washing machine without outer drum

Technical Field

The invention relates to the field of household appliances, in particular to a drum washing machine without an outer drum.

Background

The traditional drum washing machine comprises an inner drum and an outer drum, wherein the inner drum is used for containing clothes, the outer drum is used for containing water and sealing, and the inner drum and the outer drum are coaxially sleeved. The inner barrel is provided with dewatering holes, water in the outer barrel can enter the inner barrel through the dewatering holes to soak and wash clothes, and water in the clothes is thrown from the inner barrel to the outer barrel through the dewatering holes under the action of rotating centrifugal force and is discharged out of the washing machine from a water outlet of the outer barrel during dewatering. Therefore, the washing water is communicated between the inner barrel and the outer barrel, thread scraps falling off from clothes can enter the gap between the inner barrel and the outer barrel from the inner barrel, the thread scraps can accumulate and pollute the outer wall of the inner barrel and the inner wall of the outer barrel for a long time, the clothes are polluted when the clothes are washed again, the cleaning of the gap between the inner barrel and the outer barrel is difficult to realize due to the current sleeving type of the inner barrel and the outer barrel, if the washing water can be sealed in the inner barrel, the pollution problem of the gap between the inner barrel and the outer barrel can be avoided, and the outer barrel can be removed. Meanwhile, in the above-mentioned existing washing machine, the inner and outer drum sleeving type limits the washing capacity of the washing machine, and if the outer drum is removed, the diameter of the inner drum can be increased, the volume of the inner drum can be increased, and the washing capacity of the washing machine can be improved on the premise of not changing the size of the whole washing machine, so that the development of the drum washing machine without the outer drum is required. However, in the conventional drum washing machine, a spring for suspending a drum member, a damper for suppressing vibration, and a balance weight are installed in an outer drum, and after the outer drum is removed, how to install the spring, the damper, and the balance weight is a problem that must be solved.

Therefore, the prior art has the problem that the internal structure layout of the drum washing machine without the outer drum is difficult.

Disclosure of Invention

The invention mainly aims to provide a drum washing machine without an outer drum, which aims to solve the problem that the internal structure layout of the drum washing machine without the outer drum in the prior art is difficult.

In order to achieve the above object, according to one aspect of the present invention, there is provided a drum washing machine without a tub, comprising: a housing; the device comprises a barrel, a feeding port and a discharging port, wherein one end of the barrel is provided with the feeding port; the elastic support component is arranged in the shell and connects the cylinder with the inner wall of the shell; the balancing weight is arranged on one side of the elastic supporting component close to the putting opening.

Further, the elastic support assembly includes: the cylinder body is pivotally connected to the support frame; and the damper is supported below the supporting frame.

Furthermore, the damper is a pressure spring damper, and the supporting direction of the pressure spring damper is arranged along the vertical direction.

Furthermore, the attenuator is the multiunit, and the multiunit attenuator sets up around the circumference interval of barrel, and is provided with one or more attenuator in the same group, and a plurality of attenuators in the same group set up along the axial interval of barrel.

Further, the support frame includes: the rear disc body is arranged at one end of the barrel body, which is far away from the throwing opening; the support arm, the support arm is a plurality of, and a plurality of support arms set up around the circumference interval of back disk body, and the end that stretches out of support arm extends towards putting in mouthful one side, and constitutes the space that is used for the holding barrel between a plurality of support arms, reserves the clearance between the outer peripheral face of support arm and barrel, connects the attenuator on two at least support arms in a plurality of support arms, and at least one support arm in a plurality of support arms is located the one end of putting in mouthful and is provided with the balancing weight.

Further, the rear disc body includes: the center of the disc body is provided with a rotating shaft hole; the connecting arms are multiple and extend out of the edge of the disc body in the radial direction, the number of the connecting arms is not smaller than that of the supporting arms, and at least part of the connecting arms are connected with the corresponding supporting arms.

Furthermore, a damper is arranged on the connecting arm which is not connected with the supporting arm.

Furthermore, the connecting arm directly connected with the damper extends along the vertical direction, and at least one connecting arm connected with the supporting arm is symmetrically arranged on two sides of the connecting arm directly connected with the damper.

Furthermore, the connecting arm is provided with a bulge part, a lapping surface is formed between the end part of the connecting arm and the bulge part, and the end part of the supporting arm is connected to the lapping surface.

Furthermore, the included angle between the supporting arm and the vertical direction is more than or equal to 5 degrees and less than or equal to 85 degrees.

Further, the farthest distance L of the two supporting arms in the horizontal direction and the radius R of the cylinder body meet the following condition: l < (2R +100 mm); and/or the farthest distance M between the two ends of the balancing weight in the horizontal direction and the radius R of the cylinder body meet the following conditions: m < (2R +100 mm).

Further, the support arm is including connecting in order and all being first section, second section and the third section that the angle set up, and first section is connected with the disk body, and the third section is connected with the balancing weight, and the extending direction of second section is the same with the axial of barrel, and the attenuator setting is on the second section, and first section and third section all extend along the radial of barrel.

Furthermore, one or more balancing weights are arranged, wherein one end of each of the two adjacent supporting arms, which is far away from the rear disc body, is connected with the same balancing weight; and/or when the balancing weight is a plurality of, a plurality of balancing weights are arranged around the circumference of the barrel.

Further, the drum washing machine without the tub further includes: the connecting frame is connected with one end of the barrel body far away from the throwing port; one end of the rotating shaft extends out from the connecting frame far away from the throwing port and penetrates through the rotating shaft hole; the bearing is arranged between the rotating shaft hole and the rotating shaft; and the driving motor is in driving connection with the rotating shaft.

Furthermore, the rear disc body and the supporting arm are of an integrally formed structure.

By applying the technical scheme of the invention, the drum washing machine without the outer drum comprises a shell, a drum body, an elastic supporting component and a balancing weight. One end of the cylinder body is provided with a feeding opening, and the cylinder body is arranged in the shell; the elastic support assembly is arranged in the shell and connects the cylinder with the inner wall of the shell; the balancing weight sets up in the elastic support subassembly and is close to one side of putting in mouthful.

When the drum washing machine without the outer drum with the structure is used, the design of the drum washing machine without the outer drum is realized because the shell only has a single drum body. And through setting up the balancing weight in this application not only can adjust the barycenter position of barrel part, guarantee that the barrel is according to preset inclination or pitch angle design, but also can increase the suspension quality, restrain the suspension vibration. Meanwhile, the drum washing machine without the outer drum in the application also adopts a mode of supporting the drum body through the elastic supporting component, so that the stability of the drum body during the operation of the drum washing machine can be ensured. Therefore, the drum washing machine without the outer drum solves the problem that the internal structure layout of the drum washing machine without the outer drum in the prior art is difficult. In addition, the drum washing machine without the outer drum realizes the structural design without the outer drum of the drum washing machine.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows an exploded view of a drum washing machine without a tub in accordance with one embodiment of the present application;

FIG. 2 shows an exploded view of a drum washing machine without a tub according to another embodiment of the present application;

FIG. 3 is a schematic structural view of the drum washing machine without a tub of FIG. 1;

FIG. 4 is a schematic view showing another angle structure of the drum washing machine without a tub of FIG. 1;

FIG. 5 is a schematic left and right boundary lines of the drum washing machine without the outer drum of the present application;

FIG. 6 is a schematic structural view of the drum washing machine without a tub in FIG. 2;

fig. 7 is a schematic view illustrating another angle structure of the drum washing machine without the tub of fig. 2.

Wherein the figures include the following reference numerals:

10. a barrel; 11. a throwing port; 20. an elastic support member; 21. a support frame; 211. a rear tray body; 2111. a tray body; 2112. a connecting arm; 2113. a raised portion; 2114. a lapping surface; 212. a support arm; 2121. a first stage; 2122. a second stage; 2123. a third stage; 22. a damper; 30. a balancing weight; 40. a connecting frame; 50. a rotating shaft; 60. a bearing; 70. the motor is driven.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

In order to solve the problem that the internal structure layout of a drum washing machine without an outer drum in the prior art is difficult, the application provides a drum washing machine without an outer drum.

As shown in fig. 1 to 7, the drum washing machine without a tub of the present application includes a housing, a tub 10, an elastic support member 20, and a weight block 30. One end of the cylinder 10 is provided with a feeding opening 11, and the cylinder 10 is arranged in the shell; the elastic support assembly 20 is arranged in the shell and connects the cylinder 10 with the inner wall of the shell; the weight block 30 is disposed on a side of the elastic support assembly 20 close to the input port 11.

When the drum washing machine without the outer drum with the structure is used, the design of the drum washing machine without the outer drum is realized because the inner part of the shell is only provided with the single drum body 10. And through setting up balancing weight 30 not only can adjust the barycenter position of barrel 10 part in this application, guarantee that barrel 10 is according to preset inclination or pitch angle design, but also can increase the suspension system quality, restrain the suspension system vibration. Meanwhile, in the drum washing machine without the outer drum in the present application, a manner of supporting the drum 10 by the elastic support assembly 20 is further adopted, so that the stability of the drum 10 can be ensured when the drum washing machine operates. Therefore, the drum washing machine without the outer drum solves the problem that the internal structure layout of the drum washing machine without the outer drum in the prior art is difficult. In addition, the drum washing machine without the outer drum realizes the structural design without the outer drum of the drum washing machine.

It should be noted that, since the drum washing machine without the outer drum in the present application has only one drum 10 inside, when the drum washing machine without the outer drum in the present application is used, the washing water is sealed inside the drum 10, so that the problem that the gap between the inner drum and the outer drum of the conventional drum washing machine is easily polluted can be solved. In addition, since the drum washing machine without the outer tub of the present application has only one drum 10, the volume of the drum 10 can be increased without changing the volume of the outer casing, and thus the washing space can be increased.

Specifically, the elastic support assembly 20 includes a support bracket 21 and a damper 22. The cylinder 10 is pivotally connected to the support frame 21; the damper 22 is supported below the support frame 21. That is, in the present application, the cylinder 10 rotates relative to the supporting frame 21, or the cylinder 10 rotates relative to the elastic support member 20. In the present application, the damper 22 does not contact the cylinder 10, but the damper 22 is located below the cylinder 10.

Also, in one embodiment of the present application, the damper 22 is a compressed spring damper, and a supporting direction of the compressed spring damper is arranged in a vertical direction. By configuring the damper 22 as a compression spring damper, it can be ensured that the elastic support assembly 20 can provide an acting force for pulling up and supporting the support frame 21 through the compression spring damper.

Specifically, the dampers 22 are multiple groups, the multiple groups of dampers 22 are arranged around the cylinder 10 at intervals in the circumferential direction, one or more dampers 22 are arranged in the same group, and the multiple dampers 22 in the same group are arranged at intervals in the axial direction of the cylinder 10. By the arrangement, the supporting frame 21 can be effectively ensured to be more uniform and stable in stress, so that the stability of the drum washing machine without the outer drum in the application in operation is ensured.

Specifically, the support frame 21 includes a rear tray body 211 and a support arm 212. The rear disc body 211 is arranged at one end of the cylinder body 10 far away from the input port 11; the support arms 212 are multiple, the support arms 212 are arranged around the periphery of the rear disc body 211 at intervals, the extending ends of the support arms 212 extend towards one side of the putting-in opening 11, a space for accommodating the cylinder 10 is formed between the support arms 212, and a gap is reserved between the outer peripheral surfaces of the support arms 212 and the cylinder 10, namely, a certain radial distance needs to be kept between the support arms 212 and the cylinder 10 in the application, so that the cylinder 10 is prevented from colliding with the support arms 212 under the eccentric action. Meanwhile, the damper 22 is connected to at least two of the plurality of support arms 212, and the counterweight 30 is disposed at one end of at least one support arm 212 of the plurality of support arms 212, which is located at the input port 11.

In addition, in the present application, the rear tray body 211 and the support arm 212 may be independent from each other and may be configured to be spliced, or may be integrally formed.

Specifically, the rear plate 211 includes a plate 2111 and a connection arm 2112. A rotating shaft hole is formed in the center of the disc body 2111; the connecting arms 2112 are plural, the plural connecting arms 2112 radially extend from the edge of the plate 2111, the number of the connecting arms 2112 is not less than the number of the support arms 212, and at least a part of the connecting arms 2112 are connected to the corresponding support arms 212.

Optionally, the number of connecting arms 2112 is greater than the number of support arms 212, and dampers 22 are also provided on connecting arms 2112 that are not connected to support arms 212. Further, the connection arm 2112 directly connected to the damper 22 extends in the vertical direction, and at least one connection arm 2112 connected to the support arm 212 is symmetrically provided on both sides of the connection arm 2112 directly connected to the damper 22.

In one embodiment of the present application, there are three connecting arms 2112, two supporting arms 212, and one connecting arm 2112 is connected to the damper 22, and the other two connecting arms 2112 are symmetrically disposed on both sides of the connecting arm 2112 connected to the damper 22. Meanwhile, in the present embodiment, each support arm 212 is connected to one damper 22, respectively. Therefore, the number of the dampers 22 is three in the present application, and the three dampers 22 are arranged in a triangular shape.

In another embodiment of the present application, the connecting arm 2112 and the supporting arm 212 are both two, and the supporting arm 212 is such that the connecting arm 2112 is disposed corresponding to the lower half of the cylinder 10. At this time, each support arm 212 is connected to two dampers 22, respectively. Of course, in the present embodiment, the number of the supporting arms 212 may be increased as shown in fig. 2, 6 and 7, and the increased number of the supporting arms 212 may be located at the upper half portion of the cylinder 10. Of course, the support arms 212 located in the upper half of the cylinder 10 are not connected to the damper 22, but these support arms 212 may be connected to the weight 30.

Optionally, the connecting arm 2112 has a raised portion 2113 thereon, the end of the connecting arm 2112 and the raised portion 2113 forming an overlapping surface 2114, and the end of the support arm 212 is attached at the overlapping surface 2114. By this arrangement, the connection between the connection arm 2112 and the support arm 212 can be made easier, and the connection stability between the connection arm 2112 and the support arm 212 can be ensured by the limitation of the support arm 212 by the raised portion 2113.

In the present application, since the advantage of only one drum 10 without providing an outer tub outside the drum 10 is that the washing capacity of the drum washing machine can be expanded without changing the size of the casing, it is necessary to consider that the support arm 212 of the elastic support member 20 should not occupy the space of the original outer tub, particularly the space in the left-right direction of the drum 10, when laying out the positional relationship between the elastic support member 20 and the drum 10. Therefore, in the present application, the support arms 212 connected with the damper 22 should be disposed in the lower left and lower right spaces of the cylinder 10. Preferably, the support arm 212 is angled from vertical by 5 degrees or more and 85 degrees or less. Further, the maximum distance L of the two support arms 212 in the horizontal direction and the radius R of the cylinder 10 satisfy: l < (2R +100mm), and the farthest distance M between the two ends of the balancing weight 30 in the horizontal direction and the radius R of the cylinder 10 meet the following requirements: m < (2R +100 mm). In one embodiment of the present application, as shown in fig. 5, the lines on the left and right sides of the barrel 10 represent the left and right boundary lines of the barrel 10, and it is necessary to ensure that any one of the connecting arms 2112 or the supporting arms 212 is located between the left and right boundary lines, and when the connecting arm 2112 or the supporting arm 212 exceeds the left side of the left boundary line or the right side of the right boundary line, the exceeding distance should be less than 50 mm.

Specifically, the support arm 212 includes a first section 2121, a second section 2122, and a third section 2123, which are sequentially connected and are all disposed at an angle, the first section 2121 is connected to the plate 2111, the third section 2123 is connected to the counterweight 30, the second section 2122 extends in the same axial direction as the cylinder 10, the damper 22 is disposed on the second section 2122, and the first section 2121 and the third section 2123 both extend in the radial direction of the cylinder 10. Also, in one embodiment of the present application, the first section 2121 extends in a direction in which the diameter of the cylinder 10 becomes smaller, and the third section 2123 extends in a direction in which the diameter of the cylinder 10 becomes larger, and the first section 2121 and the third section 2123 are perpendicular to the second section 2122, respectively. By such an arrangement, it can be effectively ensured that no collision or friction is generated between the barrel 10 and each part of the support arm 212 during the rotation of the barrel 10.

It should be noted that the first, second and

third sections

2121, 2122 and 2123 of the support arm 212 may be assembled with each other or integrally formed.

Specifically, the number of the clump weights 30 is one or more, wherein one end of each of two adjacent supporting arms 212 far away from the rear tray body 211 is connected with the same clump weight 30; when the weight 30 is plural, the plural weights 30 are disposed around the circumference of the barrel 10.

In one embodiment of the present application, there is one weight block and two support arms 212, and both support arms 212 are located below the barrel 10, so that the weight block 30 is installed below the barrel 10 in this embodiment.

Specifically, the drum washing machine without a tub of the present application further includes a coupling frame 40, a rotation shaft 50, a bearing 60, and a driving motor 70. The connecting frame 40 is connected with one end of the cylinder 10 far away from the throwing port 11; one end of the rotating shaft 50 extends from the connecting frame 40 far away from the throwing port 11 and penetrates through the rotating shaft hole; the bearing 60 is disposed between the rotating shaft hole and the rotating shaft 50; the driving motor 70 is in driving connection with the rotating shaft 50. Also, it should be noted that, in an embodiment of the present application, a motor is installed on the rear tray body 211, and the motor drives the rotating shaft 50 to rotate, and the rotating shaft 50 drives the drum 10 to rotate through the connecting frame 40. In one embodiment of the present application, the connecting frame 40 is a tripod and the bearings are two, including a front bearing and a rear bearing, and the rear disc body further has a bearing chamber for accommodating the front bearing and the rear bearing. And among the two bearings, the bearing relatively close to the cylinder body is a front bearing, and the bearing relatively far away from the cylinder body is a rear bearing.

In addition, in the present application, the portion of the elastic support assembly 20 except the damper 22 and the driving motor 70 constitute a suspension system design of the drum washing machine without the tub.

Alternatively, the drive motor 70 is a BLDC motor or a DD motor.

Preferably, the weight 30 has an arc-shaped section concentric with the edge of the dispensing opening 11 on the side facing the dispensing opening 11. By such an arrangement, it can be effectively ensured that the balancing weight 30 does not block the input port 11.

It should be noted that the support arm 212 connected to the damper 22 in this application has a mounting hole for fitting the damper 22.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

1. the problem of drum dirtying of the drum washing machine is solved;

2. the washing capacity is improved on the premise of keeping the size of the whole machine unchanged;

3. the layout design of the balancing weight is guaranteed after the outer barrel is removed, and vibration is effectively inhibited.

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drum washing machine without a tub, comprising:

a housing;

the device comprises a cylinder body (10), wherein one end of the cylinder body (10) is provided with a feeding opening (11), and the cylinder body (10) is arranged in the shell;

the elastic support assembly (20) is arranged in the shell and connects the barrel (10) with the inner wall of the shell;

the balancing weight (30) is arranged on one side, close to the putting-in opening (11), of the elastic supporting component (20).

2. The drum type washing machine without tub of claim 1, characterized in that the elastic support assembly (20) comprises:

the cylinder body (10) is pivotally connected to the supporting frame (21);

a damper (22), the damper (22) being supported below the support frame (21).

3. A drum washing machine without tub according to claim 2, characterized in that the damper (22) is a compressed spring damper, and a supporting direction of the compressed spring damper is arranged in a vertical direction.

4. The drum washing machine without the outer drum as claimed in claim 2, characterized in that the dampers (22) are in a plurality of groups, the plurality of groups of dampers (22) are arranged at intervals around the circumference of the drum (10), and one or more dampers (22) are arranged in the same group, and the plurality of dampers (22) in the same group are arranged at intervals along the axial direction of the drum (10).

5. The drum washing machine without tub of claim 2, characterized in that the support frame (21) comprises:

the rear disc body (211), the rear disc body (211) is arranged at one end of the barrel body (10) far away from the putting-in opening (11);

support arm (212), support arm (212) are a plurality of, and are a plurality of support arm (212) are wound the circumference interval of back disk body (211) sets up, just stretch out of support arm (212) end orientation put in mouthful (11) one side extension, and a plurality of constitute between support arm (212) and be used for the holding the space of barrel (10), support arm (212) with it has the clearance to reserve between the outer peripheral face of barrel (10), and is a plurality of in support arm (212) at least two connect on support arm (212) attenuator (22), it is a plurality of at least one in support arm (212) are located the one end of putting in mouthful (11) is provided with balancing weight (30).

6. The drum washing machine without tub of claim 5, wherein the rear tray body (211) comprises:

a disc body (2111), wherein a rotating shaft hole is formed in the center of the disc body (2111);

the connecting arms (2112), the connecting arms (2112) are a plurality of, and a plurality of connecting arms (2112) are by the edge radial extension of disk body (2111), the quantity of connecting arms (2112) is not less than the quantity of support arm (212), at least part connecting arm (2112) with correspond support arm (212) are connected.

7. A drum washing machine without tub according to claim 6, characterized in that the damper (22) is further provided on the connection arm (2112) not connected to the support arm (212).

8. The drum washing machine without tub of claim 7, characterized in that the connecting arm (2112) directly connected to the damper (22) extends in a vertical direction, and at least one connecting arm (2112) connected to the supporting arm (212) is further symmetrically provided at both sides of the connecting arm (2112) directly connected to the damper (22).

9. The drum washing machine without tub of claim 6, characterized in that the connecting arm (2112) has a raised portion (2113) thereon, an overlapping surface (2114) is formed between the end of the connecting arm (2112) and the raised portion (2113), and the end of the supporting arm (212) is connected at the overlapping surface (2114).

10. The drum washing machine without outer drum as claimed in claim 5, characterized in that the angle between the supporting arm (212) and the vertical direction is greater than or equal to 5 degrees and less than or equal to 85 degrees.

11. A drum washing machine without outer drum according to claim 5,

the farthest distance L of the two supporting arms (212) in the horizontal direction and the radius R of the cylinder body (10) meet the following condition: l < (2R +100 mm); and/or

The farthest distance M between two ends of the balancing weight (30) in the horizontal direction and the radius R of the barrel (10) meet the following conditions: m < (2R +100 mm).

12. The drum washing machine without the outer tub of claim 5, wherein the supporting arm (212) comprises a first section (2121), a second section (2122) and a third section (2123) which are connected in sequence and are all arranged at an angle, the first section (2121) is connected with the tray body (2111), the third section (2123) is connected with the counterweight (30), the second section (2122) extends in the same axial direction of the drum (10), the damper (22) is arranged on the second section (2122), and the first section (2121) and the third section (2123) both extend along the radial direction of the drum (10).

13. The tub-less drum washing machine according to claim 5, wherein the weight block (30) is one or more, wherein,

one ends of the two adjacent supporting arms (212) far away from the rear disc body (211) are connected with the same balancing weight (30); and/or

When the balancing weight (30) is a plurality of, a plurality of balancing weight (30) are around the circumference setting of barrel (10).

14. The tub-less drum washing machine according to claim 6, further comprising:

the connecting frame (40), the connecting frame (40) is connected with one end of the barrel (10) far away from the throwing opening (11);

one end of the rotating shaft (50) extends from the connecting frame (40) far away from the direction of the throwing opening (11) and penetrates through the rotating shaft hole;

a bearing (60), the bearing (60) being disposed between the rotating shaft hole and the rotating shaft (50);

the driving motor (70), the driving motor (70) with the pivot (50) drive connection.

15. The drum washing machine without a tub of any one of claims 5 to 14, characterized in that the rear tray body (211) and the support arm (212) are an integrally formed structure.