CN109402939B

CN109402939B - Multi-drum washing machine

Info

Publication number: CN109402939B
Application number: CN201811577812.7A
Authority: CN
Inventors: 闫卓; 王其建; 邢兴; 张新新; 薛威海; 王哲星
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2018-12-20
Filing date: 2018-12-20
Publication date: 2021-03-23
Anticipated expiration: 2038-12-20
Also published as: CN109402939A

Abstract

The invention discloses a multi-drum washing machine, relates to the technical field of washing machines, and solves the problems of large occupied space and large vibration and noise of a drum washing machine. The invention relates to a multi-drum washing machine, which comprises a box body, wherein at least one drum washing unit and a plurality of impeller washing units are arranged in the box body, the impeller washing units are arranged side by side, the impeller washing units are fixedly connected through a connecting piece, the drum washing unit and the impeller washing units are fixedly connected through a rigid connecting piece, and the drum washing unit is connected with the box body through a fixing component. The invention is used for washing clothes.

Description

Multi-drum washing machine

Technical Field

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

Background

Along with the development of economy and the improvement of living standard of people, the popularity of the washing machine is gradually increased, the requirements of people on the performance of the washing machine are higher and higher, particularly along with the enhancement of health consciousness of people, the washing requirements of users on common clothes are met, more and more users need to separately wash inner coats and infant clothes or wash a small amount of clothes in time, and the common washing machine cannot meet the use requirements of user partition washing due to single capacity. In order to meet the above requirements of users, manufacturers have introduced multi-drum washing machines, which mainly adopt a combination of a drum and a drum, or a combination of a drum and a pulsator.

Taking the combination of the roller and the impeller as an example, in the process of realizing the combination of a plurality of cylinders, the roller and the impeller are arranged up and down in the box body in a split structure, the roller and the impeller are not contacted with each other and are independent from each other, and a certain amount of safe distance is reserved between the roller and the impeller; the other is an integrated structure in which a plurality of flexible connectors are used to fixedly connect the drum and the pulsator.

However, in the above combination manner, the inventor finds that the prior art has at least the following technical problems, firstly, in the split type structure, in order to avoid collision between the drum and the pulsator due to vibration when the multi-drum washing machine works, a safe space needs to be reserved between the drum and the pulsator, so the split type structure occupies a large space, and is not beneficial to the compact design of the multi-drum washing machine; and after the force and moment generated by the eccentric force in the split type device act on the box body, the box body is easy to generate larger vibration and even deflection, and larger noise is generated. Secondly, in the integrated structure, because a plurality of flexible connecting pieces are adopted to connect and fix the drum and the impeller, when the drum and the impeller of the multi-drum washing machine work simultaneously, the opposite direction vibration between the drum and the impeller can not be weakened mutually, and the relevance of the vibration systems of the drum and the impeller is not large; when the drum or the impeller works independently, the flexible connection cannot effectively and well play a role in increasing the counter weight of the working unit, so that the multi-drum washing machine can generate larger vibration and noise under various working conditions.

Disclosure of Invention

The embodiment of the invention provides a multi-drum washing machine which can solve the problems that the internal components of the multi-drum washing machine in the prior art occupy large space and have large vibration and noise.

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

a multi-drum washing machine comprises a box body, wherein at least one drum washing unit and a plurality of impeller washing units are arranged in the box body, the impeller washing units are arranged side by side and fixedly connected through connecting pieces, the drum washing unit and the impeller washing units are fixedly connected through rigid connecting pieces, and the drum washing unit is connected with the box body through a fixing assembly.

The multi-drum washing machine comprises a box body, wherein at least one drum washing unit and a plurality of impeller washing units are arranged in the box body, the at least one drum washing unit is used for meeting the common washing requirements of users, and the plurality of impeller washing units are used for meeting the subarea washing requirements of users for washing inner and outer clothes separately or washing a small amount of clothes in time. In order to better utilize the transverse space of the box body, a plurality of impeller washing units are arranged side by side; the impeller washing unit can generate the centrifugal amplitude in the horizontal direction during working, so that the multiple drum washing units are prevented from colliding with each other, the structure of the multi-drum washing machine is more compact, the occupied space of the impeller washing unit is reduced, and the impeller washing units are fixedly connected into a whole by using connecting pieces. Compared with a split-type multi-drum washing machine with the roller washing unit and the impeller washing unit which are connected in a split manner, the integrated connection structure eliminates the reserved safety distance between the roller washing unit and the impeller washing unit in the split-type connection structure, the structure is more compact, and the occupied space is reduced; compared with a split structure, the integrated structure has the advantages that the rigid connecting piece is additionally arranged, so that the mass of the multi-drum washing machine can be increased, the gravity center height of the drum system is reduced, the damping constraint of the whole drum system is increased, and the amplitude and the noise of the multi-drum washing machine in the operation process are reduced. Compared with a flexible connection mode, the rigid connection mode has the following advantages that on one hand, when the drum washing unit and the impeller washing unit of the multi-drum washing machine work simultaneously, the vibration in opposite directions between the drum washing unit and the impeller washing unit can be effectively weakened mutually, and the vibration in the same direction can not be strengthened, so that the vibration and the noise of the multi-drum washing machine can be well reduced; on the other hand, when the drum washing unit or the pulsator washing unit works alone, the drum washing unit or the pulsator washing unit in a non-working state can play a role in increasing the counterweight of the pulsator washing unit or the drum washing unit in a working state, so that the aim of reducing vibration and noise is fulfilled. The drum washing unit and the impeller washing unit are connected and fixed into a whole through the rigid connecting piece and are connected with the box body through the fixing component, so that the whole is fixed in the box body.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

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

FIG. 2 is a schematic perspective view of a multi-drum washing machine with a box removed according to an embodiment of the present invention;

FIG. 3 is a schematic perspective view of a rigid connection member of a multi-drum washing machine according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a rigid connection manner of the multi-drum washing machine according to the embodiment of the present invention;

FIG. 5 is an enlarged view of a portion of the rigid link connection of the multi-tub washing machine in accordance with the embodiment of the present invention;

fig. 6 is a schematic perspective view illustrating a damper of a multi-drum washing machine according to an embodiment of the present invention.

Reference numerals:

1-a box body; 11-a suspension beam; 2-drum washing unit; 3-pulsator washing unit; 4-a connector; 5-a rigid connection; 51-a support beam; 52-connecting the cross beam; 511-a first bump; 512-second bump, 6-fixation component; 61-hanging spring; 62-a shock absorber; 621-a main shock-absorbing rod; 622-secondary shock rod; 623-connecting means. 7-connecting hole; 71-a first connection hole; 72-second connection hole; 8-a fastener; 81-bolt; 82-screws; 83-cushion block; 84-set screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The multi-drum washing machine of the embodiment of the invention, as shown in fig. 1 and fig. 2, comprises a box body 1, at least one drum washing unit 2 and a plurality of pulsator washing units 3 are arranged in the box body 1, the pulsator washing units 3 are arranged side by side, the pulsator washing units 3 are fixedly connected into a whole by a connecting piece 4, and the drum washing unit 2 and the pulsator washing unit 3 fixed into a whole are fixedly connected by a rigid connecting piece 5 and are fixed in the box body 1 by a fixing component 6.

As shown in fig. 1 and 2, the multi-drum washing machine according to the embodiment of the present invention includes a cabinet 1, at least one drum washing unit 2 and a plurality of pulsator washing units 3 are disposed in the cabinet 1, the at least one drum washing unit 2 is disposed to meet a general washing requirement of a user, and the plurality of pulsator washing units 3 are disposed to meet a partition washing requirement that the user separately washes an inner garment and an outer garment, and a requirement that a small amount of laundry is washed in time. In order to better utilize the transverse space of the box body 1, a plurality of impeller washing units 3 are arranged side by side; the impeller washing unit 3 can generate centrifugal amplitude in the horizontal direction during working, so that the plurality of impeller washing units 3 are prevented from colliding with each other, the structure of the multi-drum washing machine is more compact, the occupied space of the impeller washing unit is reduced, and the plurality of impeller washing units 3 are fixedly connected into a whole by using the connecting piece 4. The drum washing unit 2 and the pulsator washing unit 3 are fixedly connected into a whole through the rigid connecting piece 5 to form a multi-drum washing machine with an integrated structure, and compared with the multi-drum washing machine with the split structure, the multi-drum washing machine with the integrated structure eliminates the reserved safety distance between the drum washing unit 2 and the pulsator washing unit 3 of the multi-drum washing machine with the split structure, so that the internal structure of the multi-drum washing machine is more compact, and the occupied space of the multi-drum washing machine is reduced; compared with a split structure, the rigid connecting piece 5 not only plays a role in connecting and fixing the drum washing unit 2 and the impeller washing unit 3, but also increases the mass of the whole drum system, reduces the gravity center height of the drum system, and increases the damping constraint of the drum system, thereby reducing the amplitude and noise of the multi-drum washing machine in the operation process. Compared with the flexible connection mode in the prior art, the rigid connection mode has the following two advantages that on one hand, when the drum washing unit and the impeller washing unit of the multi-drum washing machine work simultaneously, the vibration in opposite directions between the drum washing unit and the impeller washing unit can be effectively weakened mutually, and the vibration in the same direction can not be strengthened, so that the vibration and the noise of the multi-drum washing machine can be well reduced; on the other hand, when the drum washing unit or the pulsator washing unit works alone, the drum washing unit or the pulsator washing unit in a non-working state can play a role in increasing the counterweight of the pulsator washing unit or the drum washing unit in a working state, so that the aim of reducing vibration and noise is fulfilled. The whole of the drum washing unit 2 and the pulsator washing unit 3, which are connected by the rigid connection 5, is connected to the cabinet 1 by the fixing assembly 6 so that the whole can be fixed inside the cabinet 1.

It should be noted that the cylinder system is a general term for a whole composed of at least one drum washing unit 2 and a plurality of pulsator washing units 3, and includes all the drum washing units 2 and the pulsator washing units 3 in the cabinet 1. In the structure of the integrated multi-drum washing machine, the contrast test of the influence of different connection modes on the vibration and noise of the multi-drum washing machine is carried out, and the connecting piece is connected with the drum washing unit 2 and the impeller washing unit 3 in a rigid connection mode; the connecting piece adopts the flexible connection mode to be connected with the drum washing unit 2 and the impeller washing unit 3, and the vibration noise condition of the multi-drum washing machine under the two connection modes is tested and analyzed. The test result shows that when the rigid connection mode is adopted to connect the drum washing unit 2 and the pulsator washing unit 3, the vibration amplitude of the multi-drum washing machine in all directions is smaller, and the noise generated integrally is also smaller.

In the multi-drum washing machine according to the embodiment of the present invention, the rigid connection member 5 for connecting the drum washing unit 2 and the pulsator washing unit 3 is a frame-shaped structure, as shown in fig. 3, the frame-shaped structure is composed of two opposing support beams 51 and a connection beam 52 for connecting the two support beams 51; the drum washing unit 2 and the pulsator washing unit 3 are respectively fixedly connected with the support beams 51 of the rigid connection member 5, and the connection cross beam 52 is used for connecting and fixing the two support beams 51 into a rigid whole. The connecting cross beam 52 can increase the weight of the rigid connecting piece 5, thereby increasing the mass of the tube system, reducing the height of the gravity center of the tube system, increasing the binding force of the tube system and reducing the amplitude and the noise of the tube system. Compared with the two supporting beams 51 which are respectively and independently connected with the drum washing unit 2 and the pulsator washing unit 3 in a contact mode, the rigid connecting piece 5 connects the supporting beams 51 into a whole through the connecting cross beam 52 and then serves as the only connecting piece between the drum washing unit 2 and the pulsator washing unit 3, the mass of the rigid connecting piece 5 is increased, and the pulsator washing unit 3 can be prevented from generating large displacement deformation due to eccentric vibration, so that the strength of the outer barrel of the pulsator washing unit 3 is guaranteed.

In the process of selecting whether the supporting beams 51 of the rigid connecting piece 5 are connected into a whole by the connecting cross beam 52, the following comparative test is carried out, and the two supporting beams 51 of the rigid connecting piece 5 are respectively and independently and rigidly connected with the drum washing unit 2 and the pulsator washing unit 3; the connecting beam 52 is used for connecting the two supporting beams 51 of the rigid connecting piece 5 into a whole, and then the two supporting beams are rigidly connected with the drum washing unit 2 and the impeller washing unit 3, and the vibration and noise conditions of the multi-drum washing machine under the two conditions are tested, and the test result shows that when the connecting beam 52 is used for connecting the two supporting beams 51 of the rigid connecting piece 5 into a whole, the vibration and noise generated during the operation of the multi-drum washing machine are smaller.

The rigid connecting piece 5 plays a role in connecting the drum washing unit 2 and the pulsator washing unit 3, and the connecting mode of the rigid connecting piece 5 with the drum washing unit 2 and the pulsator washing unit 3 can be selected from welding, riveting or threaded connection and the like. When the components are fixedly connected in a welding mode, the components are inconvenient to disassemble and replace, and the later maintenance and repair of the multi-drum washing machine are inconvenient; the riveting process is complex, the manufacturing process wastes labor and materials, and the labor intensity is high; the threaded connection can provide better connection fixing strength, and is convenient for the disassembly, assembly and later maintenance of the multi-drum washing machine; therefore, in the embodiment of the present invention, as shown in fig. 4, the rigid connection member 5 is selectively connected to the drum washing unit 2 and the pulsator washing unit 3 by a screw connection. The support beam 51 of the rigid connection member 5 needs to be provided with a connection hole 7 in a screwed connection manner, as shown in fig. 3, the support beam 51 is provided with a plurality of connection holes 7, including a first connection hole 71 fixedly connected with the drum washing unit 2 and a second connection hole 72 fixedly connected with the pulsator washing unit 3, a fastening member 8 can be installed in the connection hole 7, and the drum washing unit 2 and the pulsator washing unit 3 are fixedly connected to the support beam 51 of the rigid connection member 5 by the fastening member 8 matching with the connection hole 7.

The threaded connection can be divided into bolt connection, stud bolt connection and screw connection, the corresponding connecting hole 7 can be set as a through hole, a counter bore or a threaded hole, and the fastener 8 can be selected from a bolt, a screw or other fasteners; in the embodiment of the present invention, the rigid connection member 5 is connected to the drum washing unit 2 by a bolt connection method, the corresponding first connection hole 71 is a through hole, and the fastening member 8 matched with the through hole is a bolt 81; the rigid connecting piece 5 is connected with the pulsator washing unit 3 by screws, the corresponding second connecting holes 72 are provided with screw thread counter bores, and the matched fasteners 8 are screws 82.

It should be noted that, the position on the drum washing unit 2 corresponding to the first connection hole 71 and the position on the pulsator washing unit 3 corresponding to the second connection hole 72 are connection points of the drum washing unit 2 and the pulsator washing unit 3, and corresponding through holes or slots or other suitable structures are provided at the connection points of the drum washing unit 2 and the pulsator washing unit 3, and the through holes or slots or other suitable structures are used for installing the fixing fasteners 8.

As shown in fig. 3 and 4, in the multi-drum washing machine according to the embodiment of the present invention, the distance between the connection points corresponding to the drum washing unit 2 and the pulsator washing unit 3 is relatively long, the first protrusion 511 facing the drum washing unit 2 and the second protrusion 512 facing the pulsator washing unit 3 are disposed on the support beam 51, the first connection hole 71 is disposed on the first protrusion 511, and the second connection hole 72 is disposed on the second protrusion 512, so that the protrusion structure can fill the space between the connection points corresponding to the drum washing unit 2 and the pulsator washing unit 3. The first and

second bumps

511 and 512 may be provided in a cylindrical or prismatic shape. To facilitate installation of the fastener 8, the first protrusion 511 and the second protrusion 512 may be arranged in a staggered manner, which means that the axes of the first protrusion 511 and the second protrusion 512 are not on the same vertical line.

In the multi-drum washing machine in the embodiment of the invention, because the combination of the drum washing unit 2 and the pulsator washing unit 3 is adopted, the distance between the corresponding connection points on the drum washing unit 2 and the pulsator washing unit 3 is larger, and the installation position relationship of the rigid connecting piece 5 is realized, as shown in fig. 5, because the distance between the first lug 511 and the connection point on the drum washing unit 2 is larger, a cushion block 83 is arranged between the connection part of the first lug 511 and the drum washing unit 2 and is used for filling the space between the connection point and the first lug 511. The position of the cushion block 83 corresponding to the connecting hole 71 is provided with an internal thread and is fixedly connected with the bolt 81 of the fastener 8, and the cushion block 83 functions as a nut.

It should be noted that the cushion block 83 may also be connected and fixed at the connection point of the drum washing unit 2 by various connection methods, such as welding, riveting, and screwing, in the embodiment of the present invention, as shown in fig. 6, the cushion block 83 is connected and fixed with the connection point of the drum washing unit 3 by using the fixing screw 84; and the position of the cushion block 83 contacting the drum washing unit 3 is set as a sliding block structure, and the corresponding connecting point of the drum washing unit 2 is set as a guide rail structure, so that the cushion block 83 can only slide but can not rotate at the connecting point of the drum washing unit 2, and the bolt 81 is convenient to mount and dismount. In the rigid connection member 5 of the embodiment of the present invention, the number of the first bumps 511 and the second bumps 512 is the same, and the first bumps 511 and the second bumps 512 are symmetrically distributed on the two support beams 51, and in order to increase the connection stability, the number of the first bumps 511 and the second bumps 512 is 4, and the first bumps 511 and the second bumps 512 are arranged at four corners of the two support beams 51 of the rigid connection member 5, as shown in fig. 3, two pairs of corresponding first bumps 511 and second bumps 512 are arranged on each support beam 51. The four first lugs 511 are in the same plane, and the four second lugs 512 are in the other plane, which respectively form connection surfaces connected with the drum washing unit 2 and the pulsator washing unit 3.

In the multi-drum washing machine according to the embodiment of the present invention, as shown in fig. 3, the connecting beam 52 of the rigid connection member 5 only serves to connect the support beam 51 and does not contact the drum washing unit 2, and in order to make the internal structure of the multi-drum washing machine more compact and reduce the occupied space of the rigid connection member 5, the connecting beam 52 is disposed close to the drum washing unit 2, and the shape of the connecting beam 52 is adapted to the shape of the outer wall of the drum washing unit 2. As shown in fig. 2 and 4, the connecting beam 52 near the front side of the drum washing unit 2 is formed in an arch shape as a whole, and the connecting beam 52 near the rear side of the drum washing unit 2 is formed in a straight shape as a whole.

The multi-drum washing machine according to the embodiment of the present invention, as shown in fig. 1 and 2, includes a fixing assembly 6 for fixedly coupling the above components to the cabinet 1, and suspension beams 11 disposed on left and right sides of the cabinet 1, in addition to the cabinet 1, the drum washing unit 2, the pulsator washing unit 3, and the rigid connection member 5 for connecting the drum washing unit 2 and the pulsator washing unit 3, and the suspension beams 11 are fixedly coupled to the inside of the cabinet 1. The fixing assembly 6 comprises a hanging spring 61 and a shock absorber 62, the hanging spring 61 is arranged above the shock absorber 62, one end of the hanging spring 61 is fixedly connected to the suspension beam 11 on the side surface of the box body 1, the other end of the hanging spring 61 is fixedly connected to the lateral upper part of the drum washing unit 2, the hanging spring 61 is in a stretching state, the hanging spring 61 in the stretching state can provide constraint force for the drum system, the damping coefficient of the drum system is increased, and the vibration and noise of the drum system are reduced; one end of the shock absorber 62 is fixed below the side of the drum washing unit 2, the other end of the shock absorber 62 is fixedly connected to the bottom of the box body 1, the shock absorber 62 supports the whole drum system, the shock absorber 62 has better shock absorption performance, the box body shock caused by the shock of the drum system can be reduced, and the overall stability of the multi-drum washing machine is improved. The number of the dampers 62 is plural, and the number of the dampers 62 of the multi-drum washing machine according to the embodiment of the present invention is four, and the four dampers are fixed at four corners of the cabinet 1 to support the drum system and absorb the shock.

As shown in fig. 6, the damper 62 according to the embodiment of the present invention includes a main damping rod 621 and an auxiliary damping rod 622, wherein one end of the main damping rod 621 is fixed at the bottom of the cabinet 1, the other end of the main damping rod 621 is fixed below the side of the drum washing unit 2, one end of the auxiliary damping rod 622 is fixed at the side of the drum washing unit 2, and the other end of the auxiliary damping rod 622 is connected to the middle of the main damping rod 621 through a connecting device 623. Because the drum washing unit 2 and the pulsator washing unit 3 are fixed into a whole through the rigid connecting piece 5, the transverse amplitude of the drum washing unit 2 is increased, the auxiliary damping rod 622 of the damper 62 can increase the transverse restraint on the cylinder system, and the transverse amplitude of the cylinder system is reduced.

As shown in fig. 1 and 2, the multi-drum washing machine of the embodiment of the present invention may be provided with different numbers of drum washing units 2 and pulsator washing units 3, if the number of the drum washing units 2 is greater than one, the occupied space of the multi-drum washing machine may be greatly increased, or the size and capacity of the drum washing units 2 may be reduced, and one drum washing unit 2 may be provided to meet the general washing requirements of general users, so the multi-drum washing machine of the embodiment of the present invention is provided with one drum washing unit 2; on the premise of arranging one drum washing machine 2, in order to more effectively utilize the space in the box body 1, the sum of the widths of the pulsator washing units 3 is close to the diameter of the outer cylinder of the drum washing unit 2, and the two pulsator washing units 3 are arranged under the condition that the size of the space is not changed, so that the requirement of a user on fine subarea washing and protecting of small clothes can be met, and the capacity of the pulsator washing unit 3 can be increased to the maximum extent; if set up more quantity's impeller laundry unit 3, can increase the installation degree of difficulty, also can reduce every impeller laundry unit 3's volume and capacity, increase the manufacturing degree of difficulty, consequently set up two impeller laundry units 3. In order to better utilize the lateral space of the cabinet 1, the two pulsator washing unit 3 are placed side by side. Meanwhile, in order to facilitate the rigid connection between the drum washing unit 2 and the pulsator washing unit 3, the two pulsator washing units 3 are fixedly connected into a whole through the connecting piece 4, and the pulsator washing unit 3 connected into a whole can also reduce installation components, reduce cost and facilitate the installation and fixation of the pulsator washing unit 3.

It should be noted that, in the multi-drum washing machine, the drum washing unit 2 and the pulsator washing unit 3 of the embodiment of the present invention, the structural arrangement in the cabinet 1 may adopt a horizontal arrangement or a vertical arrangement, and when the drum washing unit 2 and the pulsator washing unit 3 of the same number and size are installed, the horizontal arrangement may increase the floor area of the multi-drum washing machine, and is not suitable for home use; when the vertical arrangement is adopted, the floor area of the washing machine can be reduced, the volume of the multi-drum washing machine can be reduced, and the space utilization rate is improved, so that the multi-drum washing machine adopts a vertical arrangement structure. As shown in fig. 2, since the capacity, volume and working mass of the drum washing unit 2 are larger than those of the pulsator washing unit 3, and the inertia is larger, when the drum washing unit 2 is located at the lower part of the cabinet 1 and the pulsator washing unit 3 is located at the upper part of the cabinet 1, the center of gravity of the whole multi-drum washing machine can be effectively lowered, so as to improve the stability of the multi-drum washing machine, therefore, the drum washing unit 2 is placed at the lower part of the cabinet 1, and the pulsator washing unit 3 is placed at the upper part of the cabinet 1.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A multi-drum washing machine comprises a box body and is characterized in that at least one drum washing unit and a plurality of impeller washing units are arranged in the box body, the impeller washing units are arranged side by side and fixedly connected through connecting pieces, the drum washing unit and the impeller washing units are fixedly connected through rigid connecting pieces, and the drum washing unit is connected with the box body through a fixing assembly; the rigid connecting piece is of a frame-shaped structure and comprises two opposite supporting beams and a connecting cross beam for connecting the two supporting beams, and the drum washing unit and the impeller washing unit are respectively and fixedly connected with the supporting beams;

the connecting beam and the supporting beam are both close to the drum washing unit, and the shape of the connecting beam is adapted to the outer wall of the drum washing unit.

2. The multi-drum washing machine as claimed in claim 1, wherein the support beam is provided with a plurality of connecting holes, fasteners are fittingly installed in the connecting holes, and the fixed connection between the drum washing unit or the pulsator washing unit and the support beam is realized by the fasteners fittingly installed in the connecting holes.

3. The multi-tub washing machine as claimed in claim 2, wherein the support beam has a first protrusion toward the drum washing unit and a second protrusion toward the pulsator washing unit, and the connection holes include a first connection hole provided on the first protrusion and a second connection hole provided on the second protrusion.

4. A multiple-tub washing machine as claimed in claim 3, characterized in that a spacer is provided between the first protrusion and the drum washing unit.

5. The multi-drum washing machine as claimed in claim 3, wherein the first and second lugs are four in number.

6. The multi-drum washing machine as claimed in claim 1, wherein the fixing assembly comprises a hanging spring and a damper connected with the cabinet, the hanging spring is positioned above the damper, the hanging spring is connected with an upper side of the drum washing unit, and the damper is connected with a bottom of the drum washing unit.

7. The multi-drum washing machine as claimed in claim 6, wherein the damper includes a main damping rod and an auxiliary damping rod, one end of the main damping rod is connected to the cabinet, the other end thereof is connected to the drum washing unit, one end of the auxiliary damping rod is connected to a middle portion of the main damping rod, and the other end thereof is connected to the drum washing unit.