Laundry washing machine with multiple inner drums and integrated outer drum

Abstract

The utility model relates to a multi-inner cylinder washing machine with integrated outer cylinder, which comprises: an outer cylinder, the outer cylinder is integrated; a plurality of installation positions are formed on the outer cylinder; inner cylinders are installed in the installation positions; the plurality of inner cylinders are independent of each other; independent washing structures are arranged in the inner cylinders; and a counterweight structure is fixed on the outer cylinder. The multi-inner cylinder washing machine with integrated outer cylinder in the utility model embodiment sets up independent inner cylinders in the independent installation positions of the outer cylinder, each inner cylinder is equipped with an independent impeller assembly, a water inlet pipe with an independent electromagnetic valve and a drain pipe with a drain valve, and can realize the function of partition washing, meet the demand of washing different clothes separately, and avoid cross contamination of clothes.

Description

Technical Field

[0001] This utility model relates to the field of electrical appliances, specifically to a multi-drum washing machine with an integrated outer drum. Background Technology

[0002] Currently, with the improvement of people's living standards, the demand for clothing washing is becoming increasingly diversified. Traditional single-tub washing machines cannot meet users' needs for separate washing of different types of clothing (such as adult and children's clothes, light and dark colored clothes, etc.), leading to cross-contamination problems. Most existing twin-tub washing machines use a design with two independent outer tubs, which not only occupies a large space but also has high production costs. Specifically: 1. Setting two independent outer tubs in a washing machine results in high production costs and complex assembly processes; 2. The machine experiences significant vibration during operation due to the resonance effect caused by the operation of two independent outer tubs; 3. Each independent outer tub requires a separate shock absorption device, and to control the overall size, its installation space is small, and the reserved space for the counterweight structure is limited.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model discloses a multi-inner drum washing machine with an integrated outer drum.

[0005] The technical solution adopted in this embodiment of the utility model is as follows: A multi-inner-tub washing machine with an integrated outer tub includes: an outer tub, the outer tub being integral; multiple mounting positions formed on the outer tub; inner tubs installed in the mounting positions; the multiple inner tubs being independent of each other; an independent washing structure being provided in the inner tub; and a counterweight structure being fixed on the outer tub.

[0006] A further technical solution is characterized in that the counterweight structure includes multiple counterweight blocks, which are evenly arranged on the outer peripheral wall of the outer cylinder.

[0007] A further technical solution is that a fixing position is formed on the outer peripheral wall of the outer cylinder, and the counterweight is detachably fixed to the outer cylinder by a fixing member.

[0008] A further technical solution is that the counterweight has a mounting surface whose shape is adapted to the outer peripheral wall of the outer cylinder; the counterweight is also provided with a mounting hole that matches the fixing position; the fixing member passes through the mounting hole to fix the counterweight to the outer cylinder, and the mounting surface is in contact with the outer peripheral wall of the outer cylinder.

[0009] A further technical solution is that a support structure is formed on the outer peripheral wall of the outer cylinder; the support structure is located below the fixed position; The supporting structure is a support plate formed on the outer cylinder, used to support the counterweight; or... The supporting structure includes a main fixing column, an auxiliary fixing column disposed beside the main fixing column, and a fixing plate; multiple reinforcing ribs are provided on the outer wall of the auxiliary fixing column; the fixing plate includes a fixing surface and a supporting surface perpendicular to the fixing surface; the fixing surface is fixed to the main fixing column and the auxiliary fixing column by multiple fasteners; and the edge of the fixing surface is engaged between the reinforcing ribs; the supporting surface is used to fix the counterweight below.

[0010] A further technical solution is that two mounting positions are formed on the outer drum; the washing machine includes two inner drums, which are respectively installed in the two mounting positions.

[0011] A further technical solution is that the two inner cylinders are of different sizes.

[0012] A further technical solution is that a water inlet pipe is installed on the outer cylinder, the water inlet pipe is connected to each inner cylinder and an independent solenoid valve is installed at the water inlet of each inner cylinder; a drain pipe is installed at the bottom of each inner cylinder.

[0013] A further technical solution is that the washing machine includes a base plate assembly; the outer drum is mounted on the base plate assembly; four sets of shock-absorbing devices are installed at the four corners of the bottom of the outer drum and between the outer drum and the base plate assembly; the shock-absorbing device includes an upper support fixed to the outer drum and a lower support fixed to the base plate assembly; a damping cylinder is fixed between the upper support and the lower support; and a spring is sleeved on the damping cylinder, which abuts against the upper support and the lower support respectively.

[0014] A further technical solution is that the washing structure is a pulsator assembly.

[0015] The beneficial effects of this utility model embodiment are as follows: 1. The multi-inner-tub washing machine with an outer tub in this embodiment of the utility model can realize the partition washing function by setting independent inner tubs in the independent installation positions of the outer tub, and each inner tub is equipped with an independent impeller assembly, a water inlet pipe with an independent solenoid valve and a drain pipe with a drain valve, so as to meet the needs of washing different clothes separately and avoid cross-contamination of clothes.

[0016] 2. In this embodiment of the utility model, the two inner drums share a single integrated outer drum. Compared to the traditional twin-drum washing machine with two independent outer drums, this reduces material costs for the outer drum manufacturing, reduces the overall machine size by eliminating unnecessary gaps between multiple outer drums, and eliminates the need for connecting parts between the multiple outer drums, thus reducing assembly difficulty. Furthermore, because the outer drum is a single piece, it is less prone to resonance issues that can easily occur with multiple outer drums.

[0017] 3. In this embodiment of the utility model, the outer peripheral wall of the outer drum is fitted with a counterweight block through a fixed position and a supporting structure. The counterweight block can adjust its weight position according to the condition of the inner drum, which can balance the asymmetric torque during the operation of the washing machine. Combined with the shock absorption device between the bottom of the outer drum and the base plate assembly, it can effectively reduce vibration and noise during operation, improve the stability of the washing machine operation and extend its service life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the outer cylinder and counterweight structure in an embodiment of this utility model.

[0019] Figure 2 for Figure 1 Another perspective of the diagram.

[0020] Figure 3 This is a schematic diagram of the outer cylinder in an embodiment of this utility model.

[0021] Figure 4 This is a schematic diagram of the outer cylinder from another angle in an embodiment of this utility model.

[0022] Figure 5 This is a schematic diagram of the counterweight block in an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of another counterweight block in an embodiment of this utility model.

[0024] Figure 7 This is a schematic diagram of a support structure in an embodiment of the present utility model.

[0025] Figure 8 for Figure 7 A schematic diagram showing the supporting structure with a fixed plate installed.

[0026] Figure 9 for Figure 1 A schematic diagram of a medium-voltage damping structure.

[0027] In the diagram: 1. Outer cylinder; 2. Mounting position; 3. Counterweight; 301. Mounting surface; 302. Mounting hole; 4. Fixing position; 5. Supporting structure; 501. Supporting plate; 502. Main fixing column; 503. Auxiliary fixing column; 505. Fixing plate; 5051. Fixing surface; 5052. Supporting surface; 506. Reinforcing rib; 6. Base plate assembly; 7. Vibration damping device; 701. Upper support seat; 702. Lower support seat; 703. Spring; 704. Damping cylinder. Detailed Implementation

[0028] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the device proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only used to conveniently and clearly assist in illustrating the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0030] This utility model discloses a multi-drum washing machine with an integrated outer drum. Figure 1 This is a schematic diagram of the outer cylinder and counterweight structure in an embodiment of this utility model. Figure 2 for Figure 1 A diagram from another angle. (See example.) Figure 1 and Figure 2 As shown, the washing machine includes an outer tub 1, which is a single piece. The outer tub 1 is preferably made of high-strength plastic or metal to provide good strength and durability. Multiple mounting positions 2 are formed on the outer tub 1. An inner tub is installed within each mounting position 2. The inner tub is preferably made of stainless steel. The multiple inner tubs are independent of each other. Each inner tub has its own independent washing structure. The multiple inner tubs can be the same size or different sizes. For example, one inner tub can be designed to be larger for washing adult clothing, and another inner tub can be designed to be smaller for washing children's clothing or small items. A counterweight structure is fixed to the outer tub 1. The counterweight structure is used to balance the centrifugal force generated during the operation of the washing machine, making the washing machine operate more stably.

[0031] In this embodiment, two mounting positions 2 are formed on the outer drum 1, meaning that two inner drums are provided inside the one-piece outer drum 1 and are respectively installed in the two mounting positions 2. Of course, three or more inner drums can also be provided as needed. In this embodiment, the washing structure is a pulsator assembly. The pulsator is driven to rotate by a motor, which is connected to a controller. The controller can control the speed and direction of the motor according to different washing programs, thereby achieving different washing effects. In other optional embodiments, the washing structure can also be other agitation or tumbling washing components.

[0032] A water inlet pipe is installed at the top of the outer cylinder 1, and each water inlet pipe is connected to each inner cylinder. An independent solenoid valve is installed at the water inlet of each inner cylinder. By controlling the opening and closing of the solenoid valve, water can be injected into each inner cylinder individually. A drain pipe is installed at the bottom of each inner cylinder. A drain valve is installed at the drain pipe to facilitate the discharge of wastewater from the inner cylinder.

[0033] Furthermore, the counterweight structure includes multiple counterweight blocks 3, which are arranged on the outer peripheral wall of the outer drum 1. The number and weight of the counterweight blocks 3 can be adjusted according to the overall structure and operational requirements of the washing machine. By arranging the counterweight blocks 3 on the outer peripheral wall of the outer drum 1 as needed, the unbalanced forces generated by the washing machine under different operating conditions can be balanced more effectively, further improving the stability of the washing machine's operation. In this embodiment, four counterweight blocks 3 are designed and evenly arranged according to the positions of the mounting positions 2 inside the outer drum 1. In other embodiments, if the size of the inner drum in the mounting positions 2 is different, counterweight blocks 3 of different weights can be arranged on the outer peripheral wall of the outer drum 1 corresponding to two or more mounting positions 2, depending on the specific situation of the inner drum.

[0034] This embodiment uses a one-piece outer drum supporting two inner drums, requiring only one outer drum to achieve zoned washing. Compared to the existing technology with multiple outer drums, this design optimizes the structure from an external integrated structure to an internal nested structure, reducing material costs. Furthermore, since multiple inner drums are nested within the same outer drum, unnecessary gaps between the outer drums are reduced, decreasing the overall size of the machine and simplifying assembly.

[0035] Furthermore, in existing technologies, the design of multiple outer cylinders cannot balance the load differences among the multiple inner cylinders when installing counterweights. In this embodiment, since the two inner cylinders operate independently, and their sizes, volumes, and rotational speeds can differ, they will generate asymmetric centrifugal forces and dynamic torques on the single, integrated outer cylinder. Installing a counterweight structure on the outside of the outer cylinder allows for adaptive design and adjustment based on the positions and sizes of the two inner cylinders, actively counteracting this asymmetric torque and preventing severe vibrations in the single outer cylinder due to uneven force distribution. For example, if the left inner cylinder is designed for a large capacity and high rotational speed, while the right inner cylinder is designed for a small capacity, an additional counterweight can be added to the right side of the outer cylinder to balance the torque imbalance on the left. Existing double-outer-cylinder designs would be more complex to handle such localized load differences within the cylinders.

[0036] Furthermore, the counterweight structure is directly set on a single integrated outer cylinder, eliminating the need to consider the connection and adaptation between multiple outer cylinders. This means there is no need to design additional connectors, mounting columns, bridging rods, or other redundant parts. During assembly, the counterweight only needs to be fixed in a preset position on a single outer cylinder, reducing the number of installation parts and making installation simpler and easier to maintain.

[0037] Figure 3 This is a schematic diagram of the outer cylinder in an embodiment of this utility model. Figure 4 This is a schematic diagram showing another angle of the outer cylinder in an embodiment of this utility model. (See diagram below.) Figure 3 , Figure 4 As shown, a fixing position 4 is formed on the outer peripheral wall of the outer cylinder 1. The counterweight 3 is detachably fixed to the outer cylinder 1 by a fastener, which facilitates the maintenance and adjustment of the counterweight 3 in the future. In this embodiment, fixing positions 4 are provided on both sides of the outer cylinder 1. On one side, corresponding to the position of an installation position 2, two fixing positions 4 are arranged in a row. On the other side, corresponding to the position of an installation position 2, two fixing positions 4 are arranged in a row.

[0038] Figure 5 This is a schematic diagram of the counterweight block in an embodiment of the present invention. Figure 6 This is a schematic diagram of another counterweight block in an embodiment of this utility model. Figure 5 , Figure 6 As shown, the counterweight 3 has a mounting surface 301 whose shape is adapted to the outer peripheral wall of the outer cylinder 1. Generally, the mounting surface 301 is curved, but it may also be designed as a flat surface in some cases. A mounting hole 302 is also provided on the counterweight 3 to mate with the position of the fixing point 4. The fixing member passes through the mounting hole 302 to fix the counterweight 3 to the outer cylinder 1, and the mounting surface 301 is in contact with the outer peripheral wall of the outer cylinder 1.

[0039] like Figures 1-4As shown, a support structure 5 is also formed on the outer peripheral wall of the outer cylinder 1. The support structure 5 is located below the fixed position 4 and is used to further reinforce and stabilize the counterweight 3. Figure 4 One embodiment of the supporting structure 5 is shown in the figure. Combined with... Figure 1 The supporting structure 5 is a supporting plate 501 formed on the outer cylinder 1, used to support the counterweight 3. Such a supporting structure 5 has a simple structure, and since it can be integrally formed with the outer cylinder 1, its strength is also relatively large.

[0040] Figure 3 The middle section shows another implementation of the supporting structure 5. Figure 7 This is a schematic diagram of a support structure according to an embodiment of the present utility model. (In conjunction with...) Figure 2 , Figure 3 and Figure 7 The supporting structure 5 includes a main fixing column 502, auxiliary fixing columns 503 disposed beside the main fixing column 502, and a fixing plate 505. Multiple reinforcing ribs 506 are provided on the outer wall of the auxiliary fixing column 503. In this embodiment, there are two auxiliary fixing columns 503, respectively disposed on both sides of the main fixing column 502. Reinforcing ribs 506 are provided on the outer periphery of the auxiliary fixing column 503. Figure 8 for Figure 7 A schematic diagram showing the supporting structure with a fixed plate installed. (See diagram.) Figure 8 As shown, the fixing plate 505 includes a fixing surface 5051 and a supporting surface 5052 perpendicular to the fixing surface 5051. The fixing surface 5051 is fixed to the main fixing post 502 and two auxiliary fixing posts 503 by multiple fasteners. Furthermore, the edges at both ends of the fixing surface 5051 are engaged between reinforcing ribs 506, making the fixing plate 505 more stable and increasing its supporting capacity. The supporting surface 5052 is used to fix the counterweight 3 below. This supporting structure 5 facilitates the assembly and disassembly of the counterweight 3 and makes it easier to adjust the counterweight.

[0041] Figure 9 for Figure 1 A schematic diagram of a medium-voltage damping structure. (See diagram below.) Figure 1 , Figure 9As shown, the washing machine further includes a base plate assembly 6. An outer tub 1 is mounted on the base plate assembly 6. A shock-absorbing device 7 is also installed between the bottom of the outer tub 1 and the base plate assembly 6. The shock-absorbing device 7 includes an upper support 701 fixed to the outer tub 1 and a lower support 702 fixed to the base plate assembly 6. A damping cylinder 704 is fixed between the upper support 701 and the lower support 702. The upper support 701 and the lower support 702 cooperate to stably limit the position of the damping cylinder 704. Specifically, the damping cylinder 704 can be engaged with the upper support 701 through grooves and protrusions to prevent axial dislodgement, and is further secured with bolts to enhance stability. The lower end of the damping cylinder 704 can be embedded in the groove of the lower support 702, and is further secured with an interference fit or bolts to support and limit the position of the damping cylinder 704. Preferably, a buffer pad can also be provided at the lower end of the damping cylinder 704 to further buffer vibration. The damping cylinder 704 is fitted with springs 703 that abut against the upper support 701 and lower support 702 respectively. These springs naturally support the weight of the washing machine body, maintaining a stable height. When vibration occurs, the upper support 701 and lower support 702 exert additional pressure or tension on the springs 703, causing the springs 703 to compress or slightly stretch, converting the shaking energy of the washing machine into its own deformation. The shock absorption device 7 reduces vibration and noise generated during the operation of the washing machine, improving its stability and service life.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multi-drum washing machine with an integrated outer drum, characterized in that, include: An outer tub (1) is integral; multiple mounting positions (2) are formed on the outer tub (1); an inner tub is installed in the mounting position (2); the multiple inner tubs are independent of each other; an independent washing structure is provided in the inner tub; a counterweight structure is fixed on the outer tub (1).

2. The multi-inner drum washing machine with an integrated outer drum according to claim 1, characterized in that, The counterweight structure includes multiple counterweight blocks (3), which are evenly arranged on the outer peripheral wall of the outer cylinder (1).

3. The multi-inner drum washing machine with an integrated outer drum according to claim 2, characterized in that, A fixing position (4) is formed on the outer peripheral wall of the outer cylinder (1), and the counterweight (3) is detachably fixed to the outer cylinder (1) by means of a fastener.

4. The multi-inner drum washing machine with an integrated outer drum according to claim 3, characterized in that, The counterweight (3) has a mounting surface (301) whose shape is adapted to the outer peripheral wall of the outer cylinder (1); the counterweight (3) is also provided with a mounting hole (302) that cooperates with the fixing position (4); the fixing member passes through the mounting hole (302) to fix the counterweight (3) to the outer cylinder (1), and the mounting surface (301) is attached to the outer peripheral wall of the outer cylinder (1).

5. The multi-inner drum washing machine with an integrated outer drum according to claim 4, characterized in that, A support structure (5) is also formed on the outer peripheral wall of the outer cylinder (1); the support structure (5) is located below the fixing position (4); The supporting structure (5) is a supporting plate (501) formed on the outer cylinder (1) for supporting the counterweight (3); or, The supporting structure (5) includes a main fixing column (502), an auxiliary fixing column (503) disposed beside the main fixing column (502), and a fixing plate (505); multiple reinforcing ribs (506) are provided on the outer side wall of the auxiliary fixing column (503); the fixing plate (505) includes a fixing surface (5051) and a supporting surface (5052) perpendicular to the fixing surface (5051); the fixing surface (5051) is fixed to the main fixing column (502) and the auxiliary fixing column (503) by multiple fasteners; and the edge of the fixing surface (5051) is wedged between the reinforcing ribs (506); the supporting surface (5052) is used to fix the counterweight (3) below.

6. The multi-inner drum washing machine with an integrated outer drum according to claim 1, characterized in that, Two mounting positions (2) are formed on the outer drum (1); the washing machine includes two inner drums, which are respectively installed in the two mounting positions (2).

7. The multi-inner drum washing machine with an integrated outer drum according to claim 6, characterized in that, The two inner cylinders are different sizes.

8. The multi-inner drum washing machine with an integrated outer drum according to claim 6, characterized in that, A water inlet pipe is installed on the outer cylinder (1), the water inlet pipe is connected to each inner cylinder and an independent solenoid valve is installed at the water inlet of each inner cylinder; a drain pipe is installed at the bottom of each inner cylinder.

9. The multi-inner drum washing machine with an integrated outer drum according to claim 1, characterized in that, The washing machine includes a base plate assembly (6); the outer tub (1) is mounted on the base plate assembly (6); four sets of shock-absorbing devices (7) are installed at the four corners of the bottom of the outer tub (1) and between the base plate assembly (6); the shock-absorbing device (7) includes an upper support seat (701) fixed to the outer tub (1) and a lower support seat (702) fixed to the base plate assembly (6); a damping cylinder (704) is fixed between the upper support seat (701) and the lower support seat (702); a spring (703) is sleeved on the damping cylinder (704) and abuts against the upper support seat (701) and the lower support seat (702) respectively.

10. The multi-inner drum washing machine with an integrated outer drum according to claim 1, characterized in that, The washing structure is a pulsator assembly.

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