CN212357687U

CN212357687U - Double-drum washing machine

Info

Publication number: CN212357687U
Application number: CN201922412620.7U
Authority: CN
Inventors: 李文伟; 许梁; 王金凯; 常园园
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: 2019-06-03
Filing date: 2019-12-27
Publication date: 2021-01-15
Anticipated expiration: 2029-12-27
Also published as: CN212152782U; CN212152781U; CN112030459A; CN112030458A; CN112111915A; CN212152783U; CN112030457A; CN112111916A

Abstract

The utility model discloses a double-drum washing machine, which comprises a washing drum; the washing device comprises a shell, a first washing unit and a second washing unit, wherein the first washing unit and the second washing unit are arranged up and down and are connected to form a suspension assembly; and the counterweight structure is at least correspondingly matched with the weight of the motors arranged at the rear parts of the first washing unit and the second washing unit. The counterweight structure is at least matched with the first motor and the second motor, so that the mouths of the first washing unit and the second washing unit of the suspension assembly with the counterweight structure cannot be excessively inclined, and the washing water contained in the suspension assembly cannot overflow from the mouths of the first washing unit and the second washing unit; meanwhile, the two motors are matched to form a counterweight structure, so that the gravity center position of the suspension assembly is correspondingly adjusted, the suspension assembly is in a leveling state, and the vibration of the washing machine in the operation process is reduced.

Description

Double-drum washing machine

Technical Field

The utility model belongs to the washing machine field, specifically speaking relates to a double drum washing machine.

Background

A counterweight is a weight used to balance a moving part of the machine.

Existing weights are generally made by blow-moulding a hollow body of plastic material, which is then filled with concrete or any other material with similar properties. For example: the counterweight is formed from two annular shells of plastics material adapted to surround a mass of concrete or any other suitable material. Also, the existing counterweight can also be formed in the shape of a continuous hollow ring with a U-shaped cross section, by means of moulded flanges of plastic material, which are also provided with radial ribs suitable for housing and remaining mounted on the washing unit of the washing machine to reduce the vibrations during the operation of the washing machine.

The double-drum washing machine in the prior art has the technical problems of high gravity center and difficult balance. Once the balance system is not well designed, the problems of resonance, displacement and large noise can occur in the dehydration process, poor experience is brought to users, and even potential safety hazards are brought, so that the design of the balance system is needed for the double-drum washing machine, and the eccentric displacement in the operation process of the washing machine is reduced.

Particularly, if two washing units of the twin drum washing machine are connected as a whole and then an assembly formed by the two connected washing units is integrally installed, the design of the counterweight structure is particularly important due to the greater overall mass.

In view of this, the present invention is provided.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in overcoming the not enough of prior art, provides a twin drum washing machine, through the balanced design scope of the focus that the reasonable twin drum washing machine that sets up hangs the assembly, realizes twin drum washing machine vibration stability and low noise performance under various user's operating modes.

In order to solve the technical problem, the utility model adopts the following basic concept:

a double drum washing machine, comprising; the washing device comprises a shell, a first washing unit and a second washing unit, wherein the first washing unit and the second washing unit are arranged up and down and are connected to form a suspension assembly; and the counterweight structure is at least correspondingly matched with the weight of the motors arranged at the rear parts of the first washing unit and the second washing unit.

Further, at least part of the counterweight structure is arranged at the front end of the first washing unit and/or the second washing unit; preferably, the counterweight structure is entirely provided at a front end of the first washing unit and/or the second washing unit.

Further, the mass of the counterweight structure arranged at the front end of the first washing unit and/or the second washing unit is larger than the sum of the masses of the motors arranged at the rear parts of the first washing unit and the second washing unit.

Furthermore, the suspension assembly is connected with one end of at least one damping piece, the other end of each damping piece is connected with the shell, the resultant force of external force applied to the suspension assembly by each damping piece is elastic hoisting force, and the intersection point of the direction of the elastic hoisting force and the plane where the axis of the first washing unit and the axis of the second washing unit are located is an elastic center; the moment of the counterweight structure relative to the elastic center is greater than the sum of the moments of the first motor and the second motor relative to the elastic center.

Further, the counterweight structure compensates and matches a difference in weight between the rear end portion and the front end portion of the first washing unit and/or a difference in weight between the rear end portion and the front end portion of the second washing unit.

Furthermore, the moment of the counterweight structure relative to the elastic center is greater than the sum of the moments of the motor arranged at the rear part of the first washing unit, the motor arranged at the rear part of the second washing unit, the cylinder bottom of the outer cylinder of the first washing unit and the cylinder bottom of the inner cylinder of the first washing unit relative to the elastic center; or the moment of the counterweight structure relative to the elastic center is greater than the sum of the moments of the motor arranged at the rear part of the first washing unit, the motor arranged at the rear part of the second washing unit, the cylinder bottom of the outer cylinder of the second washing unit and the cylinder bottom of the inner cylinder of the second washing unit relative to the elastic center.

Further, the moment of the weight structure relative to the elastic center of the suspension assembly is greater than the moment of the weight difference between the rear end portion and the front end portion of the first washing unit relative to the elastic center of the suspension assembly; alternatively, the moment of the weight structure with respect to the elastic center of the suspension assembly is greater than the moment of the weight difference between the rear end portion and the front end portion of the second washing unit with respect to the elastic center of the suspension assembly.

Further, the moment of the weight structure relative to the elastic center of the suspension assembly is less than or equal to the sum of the weight difference between the rear end and the front end of the first washing unit and the weight difference between the rear end and the front end of the second washing unit relative to the moment of the elastic center of the suspension assembly.

Further, the weight of the counterweight structure is less than or equal to the sum of the weight difference between the rear end part and the front end part of the first washing unit and the weight difference between the rear end part and the front end part of the second washing unit.

Further, the first washing unit and the second washing unit are connected through a connecting member, and the counterweight structure includes a connecting member connecting the first washing unit and the second washing unit. Preferably, the connection member connects a lower portion of the first washing unit and an upper portion of the second washing unit; further preferably, the front end and the rear end of the first washing unit and the second washing unit are connected via at least one connector, respectively.

The utility model discloses in, with double drum washing machine's first washing unit and second washing unit lug connection as an organic whole, perhaps connect as an organic whole through the connecting piece to form and hang the assembly. The connected suspension assembly has higher gravity center and larger total weight, and has the problems of difficult balance, overlarge vibration and the like in the operation process, so that a counterweight structure with larger mass is required to be arranged on the first washing unit and/or the second washing unit. In the embodiment of the utility model, a counterweight structure is arranged on the suspension assembly, and the purpose is to balance the suspension assembly formed after the first washing unit and the second washing unit are connected, so as to reduce the eccentric vibration of the washing machine in the operation process; the second purpose is to increase the weight of the whole suspension assembly, improve the vibration-proof inertia and reduce the vibration amplitude.

After the technical scheme is adopted, compared with the prior art, the utility model following beneficial effect has:

the counterweight structure is at least matched with the first motor and the second motor, so that the mouths of the first washing unit and the second washing unit of the suspension assembly with the counterweight structure cannot be excessively inclined, and the washing water contained in the suspension assembly cannot overflow from the mouths of the first washing unit and the second washing unit; meanwhile, the two motors are matched to form a counterweight structure, so that the gravity center position of the suspension assembly is correspondingly adjusted, the suspension assembly is in a leveling state, and the vibration of the washing machine in the operation process is reduced.

And simultaneously, the utility model discloses simple structure, the effect is showing, suitable using widely.

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 undue limitation. 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 to 5 are schematic structural views of a double-drum washing machine according to different embodiments of the present invention;

FIG. 6 is a schematic diagram of a rear structure of a dual drum washing machine according to an embodiment of the present invention;

description of the main elements in the figures:

1. a first washing unit; 2. a second washing unit; 3. a connecting member; 4. a housing; 5. a counterweight structure; 6. a shock absorbing member; 10. a suspension assembly; 101. a first outer barrel; 102. a first inner cylinder; 103. a first motor; 104. a first pulley; 105. a first belt; 106. a first outer cylinder bottom; 201. a second outer barrel; 202. a second inner barrel; 203. a second motor; 204. a second pulley; 205. a second belt; 206. a second outer barrel bottom; 51. an upper counterweight; 52. a lower weight member; 61. hanging a spring; 62. shock-absorbing rod.

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 to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not 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", and the like 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 is to 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 6, the embodiment of the utility model provides a twin drum washing machine, including shell 4, set up first washing unit 1 and the second washing unit 2 that set up about in shell 4, first washing unit 1 links to each other with second washing unit 2 and constitutes and hangs assembly 10, hang assembly 10 and install in shell 4 through damper, hang and be equipped with on the assembly 10 and be used for adjusting the centrobaric counter weight structure 5 that hangs assembly 10 to can realize twin drum washing machine washing under various operating modes, rinsing, vibration stability and low noise performance when dewatering.

Specifically, the first washing unit 1 includes a first outer cylinder 101, a first inner cylinder 102 coaxially and rotatably disposed in the first outer cylinder 101, and a first motor 103 driving the first inner cylinder 102 to rotate, the second washing unit 2 includes a second outer cylinder 201, a second inner cylinder 202 coaxially and rotatably disposed in the second outer cylinder 201, and a second motor 203 driving the second inner cylinder 202 to rotate, two sides of the first outer cylinder 101 and the second outer cylinder 201 are respectively suspended on the housing 4 through a damping member 6, and the first outer cylinder 101 and the second outer cylinder 201 are connected through a connecting member 3 to form a suspension assembly 10.

In the embodiment of the present invention, the first washing unit 1 and the second washing unit 2 may be both common drum washing devices; the first and second inner cylinders may be provided as non-porous drums constituting a water container when a washing process is performed.

In the embodiment of the present invention, the first motor 103 and the second motor 203 can be direct-driven motors, and can also be belt pulley motors. For example: when the motor is a direct-drive motor, the direct-drive motor is coaxially arranged on the outer side of the outer cylinder bottom, and a rotor of the direct-drive motor is connected with the inner cylinder through a motor shaft penetrating through the outer cylinder bottom; the washing unit comprises a direct drive motor, a motor shaft, a shaft sleeve, a mounting seat and the like, wherein the shaft sleeve, the mounting seat and the like are arranged on the outer barrel and are used for supporting the motor shaft, and the washing unit also comprises a speed reduction clutch and the like which are used for carrying out adjustable distribution on the output power of the motor. Also for example: when the motor is a belt pulley motor, the belt pulley motor comprises a motor arranged outside the outer cylinder, a belt pulley is coaxially arranged outside the bottom of the outer cylinder, and an output shaft of the motor is in transmission connection with the belt pulley through a belt; the first washing unit 1 includes a motor, and a sleeve, a mount, etc. mounted on the outer tub for supporting a shaft of the motor, and may further include a reduction clutch, etc. for adjustably distributing output power of the motor.

In the embodiment of the present invention, as shown in fig. 2, the first washing unit 1 and the second washing unit 2 may be directly connected to each other, for example, the first outer tub 101 of the first washing unit 1 and the second outer tub 201 of the second washing unit 2 are directly formed by a single piece, or a connecting portion is provided on the first outer tub 101 to connect the second outer tub 201 to the connecting portion so that the two are directly connected to each other, and so on. Or may be integrally connected via a connector 3 as shown in fig. 1 to form a suspension assembly 10. The connected suspension assembly 10 has a high gravity center and a large total weight, and has the problems of difficult balance, excessive vibration and the like in the operation process, so that a counterweight structure 5 with large mass needs to be arranged on the first washing unit 1 and/or the second washing unit 2. In the embodiment of the utility model, a counterweight structure 5 is arranged on the suspension assembly 10, and the purpose is to balance the suspension assembly 10 formed after the first washing unit 1 and the second washing unit 2 are connected, so as to reduce the eccentric vibration of the washing machine in the operation process; the second purpose is to increase the weight of the whole suspension assembly 10, improve the vibration-resistant inertia and reduce the vibration amplitude.

Example one

In this embodiment, after the driving suspension assembly 10 of the dual-drum washing machine is leveled by the counterweight structure 5, at least one of the following leveling conditions is required to be satisfied, and the specific leveling conditions are as follows:

first trim condition

In the vertical up-down direction, the gravity center of the suspension assembly 10 after the counterweight structure 5 is arranged is lower than the rotation axis of the first washing unit 1 and higher than the rotation axis of the second washing unit 2, and the gravity center of the assembly is located in the middle of the suspension assembly 10 formed by the first washing unit 1 and the second washing unit 2, so that the running stability of the whole machine is ensured. The rotation axis of the first washing unit 1 is the axis of the first inner tub 102, and the rotation axis of the second washing unit 2 is the axis of the second inner tub 202.

Preferably, in the vertical direction, the center of gravity of the suspension assembly 10 after the counterweight structure 5 is arranged is located at the upper boundary of the rotation axis of the second washing unit 2 and the second washing unit 2, and the center of gravity of the suspension assembly 10 after the counterweight structure 5 is arranged is located at the position which is lower than the middle of the overall height, so that the height of the center of gravity is relatively reduced, the operation of the whole machine is more stable, and the problems of large vibration, noise and the like generated by the washing machine during dewatering are avoided. The upper boundary of the second washing unit 2 is the topmost end of the second tub 201.

After the first washing unit 1 and the second washing unit 2 are connected in the horizontal left-right direction, the rotation axis of the first washing unit 1 and the rotation axis of the second washing unit 2 are in the same plane, and the vertical distance between the center of gravity of the suspension assembly 10 and the plane after the counterweight structure 5 is arranged is less than 10 mm. Preferably, the centre of gravity of the suspension assembly 10, with the counterweight structure 5 arranged thereon, is less than 10mm perpendicular to the axis of rotation of the second washing unit 2 and less than 10mm perpendicular to the axis of rotation of the first washing unit 1.

In the horizontal front-rear direction, the distance between the centre of gravity of the suspension assembly 10 behind the counterweight structure 5 and the projection of the centre of gravity of the first washing unit 1 on the axis of rotation of the first washing unit 1 is less than 20mm, or the distance between the centre of gravity of the suspension assembly 10 behind the counterweight structure 5 and the projection of the centre of gravity of the second washing unit 2 on the axis of rotation of the second washing unit 2 is less than 20 mm. Preferably, the centre of gravity of said suspension assembly 10 is located in the direction of the axis of rotation of the first washing unit 1 or the axis of rotation of the second washing unit 2, at a position between the centre of gravity of the first washing unit 1 and the centre of gravity of the second washing unit 2. The above-mentioned first washing unit 1 center of gravity, which is the overall center of gravity of all the components constituting the first washing unit 1 and the counterweight structure 5 provided on the first washing unit 1 or connected to the first washing unit 1; the second washing unit 2 centre of gravity, which is the centre of gravity of the whole assembly constituting the second washing unit 2 and the counterweight structure 5 provided on or connected to the second washing unit 2.

Second trim condition

In the vertical direction, the angle between the axis of rotation of the first washing unit 1 and the horizontal is less than 5 degrees; the angle between the axis of rotation of the second washing unit 2 and the horizontal is less than 5 degrees.

In the horizontal direction, the angle between the plane where the rotation axis of the first washing unit 1 and the rotation axis of the second washing unit 2 are co-located and the horizontal plane is greater than 85 degrees.

Third trim condition

The damping mechanism at least comprises a damping piece 6 which can generate axis elastic expansion under the action of external force, one end of the damping piece 6 is connected with the suspension assembly 10, the other end of the damping piece 6 is connected with the shell 4, and the connection part of the damping piece 6 and the suspension assembly 10 is a hoisting point of the suspension assembly 10; the distance between the center of gravity of the suspension assembly 10 after the counterweight structure 5 is arranged and the projection of the hoisting point on the rotation axis of the first washing unit 1 is less than 30 mm; and the distance between the center of gravity of the suspension assembly 10 after the counterweight structure 5 is arranged and the projection of the hoisting point on the axis of the second washing unit 2 is less than 30 mm. The damper 6 is a damper member that can be displaced in an axial direction in a telescopic manner, and includes: damping springs, damping suspension springs, pneumatic rods, hydraulic rods and the like can realize any one or combination of components capable of axially and elastically stretching and moving.

The damping mechanism may include a plurality of damping members 6, the suspension assembly 10 may be connected to one end of the plurality of damping members 6, and the other end of each damping member 6 may be connected to the housing 4, so as to enhance the support stability of the suspension assembly 10. The resultant force of the external force applied to the suspension assembly 10 by each shock absorbing member 6 is an elastic hoisting force, and the intersection point of the direction of the elastic hoisting force and the plane where the axis of the first washing unit 1 and the axis of the second washing unit 2 are located is an elastic center. The weight and the position of the counterweight structure 5 arranged at the front end of the first washing unit 1 and/or the second washing unit 2 are adjusted, so that the gravity center position of the suspension assembly 10 of the double-drum washing machine after the counterweight structure 5 is arranged is moved, and the distance between the gravity center of the suspension assembly 10 after the counterweight structure 5 is arranged and the elastic center is less than 30 mm; preferably, the distance between the centre of gravity of the suspension assembly 10, on which the counterweight 5 is arranged, and the projection of the elastic centre on the axis of rotation of the first washing unit 1 is less than 25mm, and the distance between the centre of gravity of the suspension assembly 10, on which the counterweight 5 is arranged, and the projection of the elastic centre on the axis of rotation of the second washing unit 2 is less than 25 mm.

The utility model discloses in the above-mentioned embodiment, can adopt following two kinds of modes to reach the focus after suspension assembly 10 sets up counter weight structure 5:

first mode

When the counterweight structure 5 is not arranged, the initial gravity centers G of the first washing unit 1 and the second washing unit 2 are respectively the first gravity center G; after the counterweight structure 5 for leveling is arranged on the first washing unit 1 and/or the second washing unit 2, the gravity center position Gset of the suspension assembly 10 after the counterweight structure 5 is arranged is calculated, the coordinates of a mass point of the first washing unit 1 are M1 (X1; Y1; Z1), the coordinates of a mass point of the second washing unit 2 are M2 (X2; Y2; Z3), the coordinates of a mass point of the counterweight structure 5 are M3 (X3; Y3; Z3), and the coordinates of the gravity centers of the suspension assemblies 10 of the first washing unit 1 and the second washing unit 2 are Gset:

total X ═ Σ Mi × Xi/∑ Mi ═ (M1 × X1+ M2 × 2+ M3 × X3)/(M1+ M2+ M3);

y total ∑ Mi Yi/∑ Mi ═ M1 × Y1+ M2 × Y2+ M3 × Y3)/(M1+ M2+ M3);

z total ═ Σ Mi ═ Zi/∑ Mi ═ (M1 × Z1+ M2 × Z2+ M3 × X3)/(M1+ M2+ M3);

after the balance weight structure 5 is added, whether the gravity center of the suspension assembly 10 of the double-drum washing machine meets any one of the leveling conditions after the suspension assembly of the double-drum washing machine is leveled is calculated through the formula, and if the gravity center does not meet any range of the leveling conditions, at least one condition of the leveling conditions of the suspension assembly 10 of the washing machine in the first embodiment is met by adjusting coordinates X3, Y3 and Z3 of mass points of the balance weight structure 5 in the X-axis direction, the Y-axis direction and the Z-axis direction and/or adjusting the weight M3 of mass points of the balance weight structure 5.

The mass points of the first washing unit 1 are the positions of the centers of gravity of the component assemblies constituting the first washing unit 1, the mass points of the second washing unit 2 are the positions of the centers of gravity of the component assemblies of the second washing unit 2, and the mass points of the counterweight structure 5 are the positions of the centers of gravity of the component assemblies of the counterweight structure 5. The above-mentioned respective mass point coordinate values are distances from a reference point on the X axis in the horizontal left-right direction, the Y axis in the horizontal front-back direction, and the Z axis in the vertical up-down direction, and the reference point may be any position that can be set.

Second mode

The initial gravity center of the suspension assembly and the gravity center of the system assembly after the counterweight structure 5 is arranged are obtained through a suspension method, the initial suspension assembly 10 is suspended by a thin rope, the gravity center of the suspension assembly 10 passes through the thin rope, the other position is selected for suspension once, and the intersection point of the directions of the two thin ropes is the initial gravity center G of the suspension assembly 10. Then hang the suspension assembly 10 that has set up the counter weight structure 5 through the string, the focus of the suspension assembly 10 that has set up the counter weight structure 5 passes through the string, selects another position to hang once again, and the nodical of many times string direction is the focus G assembly of the suspension assembly 10 that has set up the counter weight structure 5.

Example two

As shown in fig. 1 to 6, the present embodiment describes a dual drum washing machine, which includes a first washing unit 1 and a second washing unit 2 connected together to form a suspension assembly 10, where the suspension assembly 10 is connected to one end of at least one damping member 6, and the other end of each damping member 6 is connected to a housing 4, so that the suspension assembly 10 is suspended in the housing 4. The resultant force of the external forces applied to the suspension assembly 10 by the respective dampers 6 is an elastic lifting force, and an intersection point of the direction of the elastic lifting force and a plane where the rotation axis of the first washing unit 1 and the rotation axis of the second washing unit 2 are located is an elastic center. The weight of the counterweight structure 5 is greater than the sum of the weights of the first motor 103 and the second motor 203; the moment of the weight structure 5 relative to the elastic center is greater than the sum of the moments of the first motor 103 and the second motor 203 relative to the elastic center.

By matching the counterweight structure 5 with at least the first motor 103 and the second motor 203, the mouths of the first washing unit 1 and the second washing unit 2 of the suspension assembly 10 after the counterweight structure 5 is installed cannot be excessively inclined, so that the washing water contained in the washing machine cannot overflow from the mouths; meanwhile, the two motors are matched to be provided with the counterweight structures 5, so that the gravity center position of the suspension assembly 10 is correspondingly adjusted, the suspension assembly 10 is in a leveling state, and the vibration of the washing machine in the operation process is reduced.

In this embodiment, the counterweight structure 5 itself has a center of gravity, and the product of the distance between the center of gravity of the counterweight structure 5 and the elastic center and the gravity of the counterweight structure 5 is the moment of the counterweight structure 5 relative to the elastic center; the first motor 103 and the second motor 203 have their own centers of gravity, respectively, the product of the distance between the center of gravity of the first motor 103 and the elastic center and the gravity of the first motor 103 is the moment of the first motor 103 relative to the elastic center, and the product of the distance between the center of gravity of the second motor 203 and the elastic center and the gravity of the second motor 203 is the moment of the second motor 203 relative to the elastic center.

In this embodiment, the first motor 103 is mounted on the first outer cylinder bottom 106 side, and the second motor 203 is mounted on the second outer cylinder bottom 206 side; preferably, in order to increase the moment of inertia of the suspension assembly 10 by the first motor 103 and the second motor 203 and reduce the eccentric vibration during the operation of the washing machine, the first motor 103 is disposed on the outer periphery of the first outer cylinder bottom 106, and the second motor 203 is disposed on the outer periphery of the second outer cylinder bottom 206.

In order to adapt the weight of the first motor 103 and the second motor 203, a counterweight structure 5 is at least partially disposed on the opening side of the first outer tub 101 and/or the opening side of the second outer tub 201 for offsetting the front-rear imbalance of the suspension assembly 10. Preferably, the moment of the part of the counterweight structure 5, which is disposed on the opening side of the first outer cylinder 101 and/or the opening side of the second outer cylinder 201, relative to the elastic center is greater than the sum of the moments of the first motor 103 and the second motor 203 relative to the elastic center, so as to ensure that the counterweight structure 5 at least is used for offsetting the eccentric influence on the suspension assembly 10 caused by the first motor 103 and the second motor 203 after being installed, so that the suspension assembly 10 meets at least one leveling state described in the above embodiment after being installed with a counterweight.

In the present embodiment, the counterweight structure 5 compensates and matches the weight difference between the rear end portion and the front end portion of the first washing unit 1 and/or the weight difference between the rear end portion and the front end portion of the second washing unit 2. The moment of the counterweight structure 5 with respect to the elastic center is greater than the sum of the moments of the differences in weight of the first motor 103, the second motor 203, the rear end and the front end of the first washing unit 1 with respect to the elastic center, and the moment of the counterweight structure 5 with respect to the elastic center is greater than the sum of the moments of the differences in weight of the first motor 103, the second motor 203, the rear end and the front end of the second washing unit 2 with respect to the elastic center.

The rear end of first washing unit 1 is the end of first washing unit 1 where the bottom of the first outer tub 101 is located, and the front end is the end of first washing unit 1 where the opening of the first outer tub 101 is located. The weight difference between the rear end part and the front end part of the first washing unit 1 is the sum of the weight differences between the outer cylinder bottom and the outer cylinder opening, between the inner cylinder bottom and the inner cylinder opening, between the outer cylinder bottom mounting part and the outer cylinder opening mounting part, and between the inner cylinder bottom mounting part and the inner cylinder opening mounting part of the first washing unit 1.

The rear end of the second washing unit 2 is the end of the second outer tube 201 of the second washing unit 2 where the bottom of the outer tube is located, and the front end is the end of the second outer tube 201 of the second washing unit 2 where the mouth of the outer tube is located. The weight difference between the rear end part and the front end part of the second washing unit 2 is the sum of the weight differences between the outer cylinder bottom and the outer cylinder opening, between the inner cylinder bottom and the inner cylinder opening, between the outer cylinder bottom mounting part and the outer cylinder opening mounting part, and between the inner cylinder bottom mounting part and the inner cylinder opening mounting part of the second washing unit 2.

Of course, in the embodiment of the present invention, it is expressed that the nozzle of the first outer tube 101 of the first washing unit 1 and the nozzle of the second outer tube 201 of the second washing unit 2 are located on the same side, and the bottom of the first outer tube 101 of the first washing unit 1 and the bottom of the second outer tube 201 of the second washing unit 2 are located on the opposite side. As an alternative modification of the embodiment of the present invention, the nozzle of the first outer barrel 101 and the bottom of the second outer barrel 201 may be arranged on the same side, and the bottom of the first outer barrel 101 and the nozzle of the second outer barrel 201 may be arranged on the same side.

Preferably, in order to ensure that the rotation axis of the first washing unit 1 of the suspension assembly 10 after the installation of the counterweight extends in an inclined manner with the cylinder opening side higher and the rotation axis of the second washing unit 2 extends in an inclined manner with the cylinder opening side higher, so as to ensure that the washing water in the first washing unit 1 and the second washing unit 2 does not overflow from the cylinder opening slightly inclined upwards, the following arrangement may be made: the moment of the weight structure 5 with respect to the elastic center is greater than the sum of the moments of the first motor 103, the second motor 203, the weight difference of the rear end and the front end of the first washing unit 1, and the weight difference of the rear end and the front end of the second washing unit 2 with respect to the elastic center.

In this embodiment, in order to ensure that the counterweight structure 5 is installed to adjust the weight difference between the front end and the rear end of the suspension assembly 10, the counterweight structure 5 at least includes a counterweight member disposed on the inlet side of the first washing unit 1 and/or the second washing unit 2, so that the counterweight member adjusts the front-rear position of the gravity center of the suspension assembly 10, and the situation that the inlet of the first washing unit 1 and/or the second washing unit 2 is excessively inclined downward and the washing water directly overflows is avoided.

EXAMPLE III

As shown in fig. 1 to 6, the present embodiment describes a dual drum washing machine including a first washing unit 1 and a second washing unit 2 connected together to form a suspension assembly 10, wherein the weight of the first washing unit 1 does not exceed the weight of the second washing unit 2. The weight of the second washing unit 2 arranged at the lower part is larger than that of the first washing unit 1 arranged at the upper part, so that the gravity centers of the two washing units connected are arranged under the lower part, the gravity center height of the suspension assembly 10 is reduced, and the effect of reducing the vibration noise of the double-drum washing machine is achieved. Meanwhile, in the working and running process of the double-drum washing machine, the two washing units are connected, so that the two washing units can mutually provide a damping counterweight function, and the damping effect of the washing units which are mutually counterweighted is better because the gravity center of the assembly is lowered to a position close to the first washing unit 1 at the lower part.

In this embodiment, in order to further lower the center of gravity of suspension assembly 10, the weight of first washing unit 1 is not more than 4/5 of the weight of second washing unit 2, so that the center of gravity of suspension assembly 10 formed by connecting the two units is located at the lower part of first washing unit 1, and the center of gravity of whole suspension assembly 10 is located at the middle lower part of washing machine, so as to improve the vibration resistance of washing machine during operation.

In this embodiment, the suspension assembly 10 is provided with a counterweight structure 5 for adjusting the suspension assembly 10 installed in the housing 4 to a leveling state satisfying at least one leveling condition as described in embodiment 1 above. In this embodiment, the first washing unit 1 and the second washing unit 2 are only components that constitute functions of washing, drying, and the like of the loads therein, respectively, and for example: outer cylinder, inner cylinder, motor, etc. Therefore, the first and second washing units 1 and 2 do not include the weight structure 5 mounted thereon.

In this embodiment, the first washing unit 1 and the second washing unit 2 may be directly connected to each other by themselves, or may be connected to each other by a connecting member 3 provided independently. The connecting piece 3 can be arranged into one or a plurality of pieces; meanwhile, the connection member 3 may be provided at any one or a combination of the mouth side and the bottom side of the tub of the washing unit. In the present embodiment, the weight structure 5 includes, but is not necessarily limited to, the connecting member 3; of course, when the first washing unit 1 and the second washing unit 2 are directly connected without the connecting member 3, the counterweight structure 5 does not include the connecting member 3.

In this embodiment, when the first washing unit 1 and the second washing unit 2 are connected via the connecting member 3, the weight of the first washing unit 1 does not exceed 4/5 of the weights of the second washing unit 2 and the connecting member 3, so as to ensure that the center of gravity of the integrally connected suspension assembly 10 is located on the lower washing unit, thereby achieving the effects of reducing the height of the center of gravity of the whole double-drum washing machine and reducing vibration. Through the weight and the position of the counterweight structure 5, the included angle between the rotation axis of the first washing unit 1 and the horizontal plane of the second washing unit 2 and the horizontal plane is kept in a certain range, and the phenomenon that the front end barrel mouth is warped upwards or sunk when the first washing unit 1 and the second washing unit 2 operate is avoided.

As shown in fig. 3, in the present embodiment, the weight structure 5 includes the upper weight 51 provided on the first washing unit 1, and the weight of the first washing unit 1 does not exceed 3/4 of the total weight of the second washing unit 2 and the upper weight 51; preferably, the first washing unit 1 and the second washing unit 2 are connected via the connection member 3, and the weight of the first washing unit 1 does not exceed 3/4 of the total weight of the second washing unit 2, the upper weight member 51 and the connection member 3. Therefore, the washing capacity of the upper first washing unit 1 is smaller than that of the lower second washing unit 2, and the center of gravity of the suspension assembly 10 is located at the lower part, so that the vibration of the two washing units during separate or combined operation can be effectively buffered, and the vibration of the operation of the dual drum washing machine can be reduced.

As shown in fig. 2, in the present embodiment, the counterweight structure 5 includes the lower counterweight 52 disposed on the second washing unit 2, and the weight of the first washing unit 1 does not exceed 4/5 of the total weight of the second washing unit 2 and the lower counterweight 52; preferably, the first washing unit 1 and the second washing unit 2 are connected via the connection member 3, and the weight of the first washing unit 1 does not exceed the total amount 4/5 of the second washing unit 2, the lower weight member 52 and the connection member 3. Therefore, the washing capacity of the upper first washing unit 1 is smaller than that of the lower second washing unit 2, and the center of gravity of the suspension assembly 10 is located at the lower part, so that the vibration of the two washing units during separate or combined operation can be effectively buffered, and the vibration of the operation of the dual drum washing machine can be reduced.

As shown in fig. 4, in the present embodiment, the counterweight structure 5 includes an upper counterweight 51 disposed on the first washing unit 1 and a lower counterweight 52 disposed on the second washing unit 2, and the sum of the weights of the first washing unit 1 and the upper counterweight 51 does not exceed 4/5 of the total weight of the second washing unit 2 and the lower counterweight 52; preferably, as shown in fig. 5, the first washing unit 1 and the second washing unit 2 are connected via the connection member 3, and the weight of the first washing unit 1 does not exceed the total amount 4/5 of the second washing unit 2, the lower weight member 52, and the connection member 3. Therefore, the washing capacity of the upper first washing unit 1 is smaller than that of the lower second washing unit 2, and the center of gravity of the suspension assembly 10 is located at the lower part, so that the vibration of the two washing units during separate or combined operation can be effectively buffered, and the vibration of the operation of the dual drum washing machine can be reduced.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed in the above description in terms of preferred embodiments, it is not intended to limit the present invention, and any simple modification, equivalent change and modification made by those skilled in the art without departing from the technical scope of the present invention.

Claims

1. A double drum washing machine, comprising; the washing device comprises a shell, a first washing unit and a second washing unit, wherein the first washing unit and the second washing unit are arranged up and down and are connected to form a suspension assembly;

the method is characterized in that: and the counterweight structure is at least correspondingly matched with the weight of the motors arranged at the rear parts of the first washing unit and the second washing unit.

2. A twin drum washing machine as claimed in claim 1, wherein at least part of the weight structure is provided at the front end of the first washing unit and/or the second washing unit.

3. A twin drum washing machine as claimed in claim 2, wherein the counterweight structure is provided entirely at the front end of the first washing unit and/or the second washing unit.

4. A twin drum washing machine as claimed in claim 2, wherein the mass of the weight structure provided at the front end of the first washing unit and/or the second washing unit is greater than the sum of the masses of the motors provided at the rear of the first washing unit and the second washing unit.

5. The twin drum washing machine as claimed in claim 4, wherein the suspension assembly is connected to one end of at least one damping member, the other end of each damping member is connected to the casing, the resultant force of the damping members applying an external force to the suspension assembly is an elastic lifting force, and an intersection point of a direction of the elastic lifting force and a plane where the axis of the first washing unit and the axis of the second washing unit are co-located is an elastic center;

the moment of the counterweight structure relative to the elastic center is greater than the sum of the moments of the first motor and the second motor relative to the elastic center.

6. A twin drum washing machine as claimed in any one of claims 1 to 5, wherein the counterweight structure compensates for the weight difference between the rear and front ends of the first washing unit and/or the weight difference between the rear and front ends of the second washing unit.

7. A double-drum washing machine as claimed in claim 6, wherein the moment of the counterweight structure relative to the elastic center is greater than the sum of the moments of the motor arranged at the rear of the first washing unit, the motor arranged at the rear of the second washing unit, the cylinder bottom of the outer cylinder of the first washing unit, and the cylinder bottom of the inner cylinder of the first washing unit relative to the elastic center;

or the moment of the counterweight structure relative to the elastic center is greater than the sum of the moments of the motor arranged at the rear part of the first washing unit, the motor arranged at the rear part of the second washing unit, the cylinder bottom of the outer cylinder of the second washing unit and the cylinder bottom of the inner cylinder of the second washing unit relative to the elastic center.

8. A twin drum washing machine as claimed in claim 7, wherein the moment of the weight structure with respect to the elastic center of the suspension assembly is greater than the moment of the weight difference between the rear end portion and the front end portion of the first washing unit with respect to the elastic center of the suspension assembly;

alternatively, the moment of the weight structure with respect to the elastic center of the suspension assembly is greater than the moment of the weight difference between the rear end portion and the front end portion of the second washing unit with respect to the elastic center of the suspension assembly.

9. A twin drum washing machine as claimed in any one of claims 1 to 5, wherein the moment of the weight structure relative to the elastic center of the suspension assembly is less than or equal to the sum of the difference in weight of the rear and front ends of the first washing unit and the difference in weight of the rear and front ends of the second washing unit relative to the elastic center of the suspension assembly.

10. A twin drum washing machine as claimed in any one of claims 1 to 5, wherein the weight of the weight structure is equal to or less than the sum of the weight difference between the rear end and the front end of the first washing unit and the weight difference between the rear end and the front end of the second washing unit.

11. A twin drum washing machine as claimed in any one of claims 1 to 5, wherein the first washing unit and the second washing unit are connected via a connection member, and the counterweight structure comprises a connection member connecting the first washing unit and the second washing unit.