Laundry treatment machine

Abstract

Laundry treatment device (1), comprising: a support body (10) with an installation space (10a); at least two first drum components (20) which are all arranged in the installation space (10a), wherein the at least two first drum components (20) are spaced apart from each other along a left-right direction of the laundry treatment device (1); a second drum component (30) which is arranged in the installation space (10a), wherein the second drum component (30) is spaced apart from the first drum components (20), and the at least two first drum components (20) are arranged to the upper left and upper right of the second drum component (30); wherein in a perpendicular projection onto a plane perpendicular to an axis of the first drum component (20), a connecting line from a center point of the second drum component (30) to a center point of one of the first drum components (20) forms a first straight line, a connecting line from the center point of the second drum component (30) to a center point of another first drum component (20) forms a second straight line, wherein an angle between the first straight line and the second straight line is not less than 45°.

Description

TECHNICAL AREA

[0001] The present application relates to the technical field of laundry treatment equipment, in particular a laundry treatment device. BACKGROUND

[0002] With the ever-increasing demands of users on washing machines, they also want a single laundry treatment unit to offer functions such as zoned washing, zoned drying, or washer-dryer integration. Current technology equips laundry treatment units with multiple drum components; however, due to the limited space available in conventional laundry treatment units, the arrangement of multiple drum components is not practical. SUMMARY OF THE INVENTION

[0003] Against this background, the embodiments of the present application intend to provide a laundry treatment device in which several drum components are expediently arranged within the limited space of the laundry treatment device.

[0004] The embodiments of the present application provide a laundry treatment device comprising: a support body with an installation space; at least two first drum components, all of which are arranged in the installation space, wherein the at least two first drum components are spaced apart from each other along the left-right direction of the laundry treatment device; a second drum component, which is arranged in the installation space, wherein the second drum component is spaced apart from the first drum components, and the at least two first drum components are each arranged to the left and right of the second drum component;wherein, in the perpendicular projection onto a plane perpendicular to the axis of the first drum component, the line connecting the center of the second drum component to the center of one of the first drum components forms a first straight line, and the line connecting the center of the second drum component to the center of the other first drum component forms a second straight line, the angle between the first straight line and the second straight line being not less than 45°.

[0005] In some embodiments, the angle between the first line and the second line is not greater than 60°.

[0006] In some embodiments, in the vertical projection onto a plane perpendicular to the axis of the first drum component, the shortest distance between the first drum component and the second drum component along the first straight line or the second straight line is 15 mm to 35 mm.

[0007] In some embodiments, the ratio of the distance from the highest position of the second drum component to the underside of the support body to the dimension of the support body in the vertical direction of the laundry treatment device is 0.75~0.85.

[0008] In some embodiments, the ratio of the outer diameter of the first drum component to the dimension of the support body in the left-right direction is 0.23~0.28; and / or the ratio of the outer diameter of the first drum component to the dimension of the support body in the vertical direction is 0.17~0.21.

[0009] In some embodiments, the ratio of the outer diameter of the second drum component to the dimension of the support body in the left-right direction is 0.82~1.0; and / or the ratio of the outer diameter of the second drum component to the dimension of the support body in the vertical direction is 0.6~0.75.

[0010] In some embodiments, the ratio of the outer diameter of the first drum component to the outer diameter of the second drum component is 0.31~0.35.

[0011] In some embodiments, the first drum component and the second drum component have an overlap area when projected onto a vertical plane parallel to the axis of the first drum component.

[0012] In some embodiments, the laundry treatment device comprises a first connecting element and a second connecting element, wherein the first connecting element is rotatably connected at one end to the first drum component and at the other end to the support body, and the second connecting element is connected at one end to the first drum component and at the other end to the support body; the first connecting element and the second connecting element are located on opposite sides of the vertical median plane of the first drum component, the vertical median plane being a vertical plane passing through the axis of the first drum component; the second connecting element is designed as an elastic component.

[0013] In some embodiments, the ratio of the distance between the connection position of the first connecting element with the carrier body and the connection position of the second connecting element with the carrier body in the left-right direction to the outer diameter of the first drum component is 0.7~1.4.

[0014] In some embodiments, the support body comprises a top support and two first side supports spaced apart from each other in the left-right direction of the laundry treatment device, the top support being connected at its opposite ends in the left-right direction to the two first side supports and the top support together with the two first side supports enclosing an installation space; an end of the first connecting element located away from the first drum component is connected to the top support or the first side support by means of a connecting shaft; and / or an end of the second connecting element located away from the first drum component is connected to the top support or the first side support.

[0015] In some embodiments, in the left-right direction, the first connecting element is closer to the first side support than the second connecting element, with the elasticity of the second connecting element being greater than the elasticity of the first connecting element.

[0016] In some embodiments, the ratio of the shortest distance between two adjacent first drum components in the left-right direction to the dimension of the carrier body in the left-right direction is 0.2~0.4.

[0017] In some embodiments, the first drum component comprises a first outer drum and a first inner drum, wherein at least part of the first outer drum and the first connecting element form a one-piece structure.

[0018] In some embodiments, the first outer drum is made of plastic material, wherein the first connecting element is designed as a projection that extends above one side of the first outer drum, and the projection is formed integrally with the first outer drum; the second connecting element is a suspension spring.

[0019] In some embodiments, the laundry treatment device comprises a connecting shaft, a vibration damping sleeve, and a bushing, wherein the first connecting element has a connecting part, the connecting part forming a shaft bore through which the connecting shaft is passed; the bushing is mounted on the outer circumferential surface of the connecting shaft, the vibration damping sleeve is clamped between the outer circumferential surface of the bushing and the bore wall of the shaft bore, wherein the stiffness of the bushing is greater than the stiffness of the vibration damping sleeve, and the combination structure consisting of the connecting part, the vibration damping sleeve, and the bushing is rotatable about the connecting shaft.

[0020] The laundry treatment device provided in the present embodiment causes the distance between the two first drum components to be increased, creating additional space between or below the two first drum components which can be used for installing components or for accommodating part of the second drum component, thereby promoting a more compact structure and keeping the dimensions of the laundry treatment device to a minimum in the vertical direction.Furthermore, the minimum distance between the connection points of two adjacent first drum components with the support body is increased in the left-right direction. This means that when one of the first drum components is operating, the vibrations it generates, when transmitted to the support body, have a lesser influence on the other first drum component due to the local vibrations of the support body. When both first drum components are operating simultaneously, the distance between the positions where the vibrations generated by each of the two first drum components are transmitted to the support body is increased. This prevents the vibrations generated by the two first drum components from easily influencing each other, thus contributing to a reduction in the vibration amplitude of the support body. BRIEF DESCRIPTION OF THE FIGURES Fig. Figure 1 is a structural schematic representation of a laundry treatment device according to an embodiment of the present application. Fig. Figure 2 is a schematic representation from a different perspective of Fig. 1. Fig. 3 is a schematic cross-sectional view along AA in Fig. 2. Fig. Figure 4 is an enlarged schematic representation of area D in Fig. 3. Fig. Figure 5 is a schematic cross-sectional view along FF in Fig. 2. Fig. Figure 6 is an enlarged schematic representation of the area G in Fig. 5. Fig. Figure 7 is a vibration comparison diagram of the laundry treatment device according to some embodiments and comparative examples of the present application. REFERENCE MARK LIST

[0021] 1 Laundry treatment unit; 10 Support body; 10a Installation space; 11 Deck support; 12 First side support; 20 First drum component; 20a First laundry treatment chamber; 30 Second drum component; 30a Second laundry treatment chamber; 40 First connecting element; 40a First position; 41 Connecting part; 42 Shaft bore; 50 Second connecting element; 50a Second position; 60 Connecting shaft; 70 Vibration damping sleeve; 80 Bushing. DETAILED EXECUTION FORMS

[0022] To clarify and make more understandable the objectives, technical solutions, and advantages of the present application, the present application is described in further detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein serve only to illustrate the present application and are not intended to limit it.

[0023] The individual specific technical features described in the specific embodiments can be combined in any suitable way, provided they are not contradictory. For example, different embodiments and technical solutions can be formed by combining various specific technical features. To avoid unnecessary repetition, the various possible combinations of the individual specific technical features are not explained separately in this application.

[0024] In the following description, the terms "first," "second," etc., are used solely to distinguish between different objects and do not indicate any similarities or connections between them. It should be understood that the directional terms "top," "bottom," "outside," and "inside" refer to the orientation in normal use, while the directional terms "left" and "right" denote the left-right direction shown in the corresponding schematic diagram, which may or may not correspond to the left-right direction of normal use.

[0025] It should be clarified that the terms "comprise," "contain," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a number of elements includes not only those elements but also other elements not expressly listed or elements inherent in that process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a..." does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising that element. "Several" means two or more.

[0026] The embodiment of the present application provides a laundry treatment device 1.

[0027] It is understandable that the laundry treatment device 1 can include various forms, for example washing machine, spin dryer, dryer, washer-dryer combination, washer-dryer set, etc., whereby the laundry treatment device 1 can independently perform one or more functions such as washing, drying, spinning, etc.

[0028] Referring to Fig. 1 The laundry treatment device 1 comprises a carrier body 10, at least two first drum components 20 and a second drum component 30.

[0029] The carrier body 10 has an installation space 10a. The second drum component 30 and the at least two first drum components 20 are all arranged within the installation space 10a.

[0030] It is understood that the support body 10 serves to provide a receiving space for the first drum component 20 and the second drum component 30, and that the support body 10 has sufficient structural strength to act as a force-absorbing component, to bear vertical loads and to withstand horizontal actions, wherein the first drum component 20 and the second drum component 30 are supported on the support body 10 and the support body 10 is able to bear at least the weight of the first drum component 20 and the second drum component 30 as well as their respective loads.

[0031] It is understood that the specific design of the first drum component 20 is not limited. The first drum component 20 can comprise a first outer drum and a first inner drum, wherein the first outer drum is arranged around the outside of the first inner drum, the first outer drum serves to hold water, and the first inner drum serves to hold laundry. In this embodiment, the water intake of the first inner drum is carried out by the outer drum, and the first inner drum can also be referred to as a perforated inner drum. In other embodiments, the water intake of the first inner drum is carried out by the inner drum itself and can also be referred to as an unperforated inner drum.

[0032] At least two first drum components 20 are arranged spaced apart from each other along the left-right direction of the laundry treatment device 1, which advantageously reduces the space occupied by the aforementioned first drum components 20 in the vertical direction.

[0033] For example, any two first drum components 20 are not connected to each other, which reduces interference between the first drum components 20.

[0034] It should be explained that the left-right direction refers to the left and right sides of the laundry treatment device 1 during normal use, with the left-right direction being perpendicular to the vertical direction and the forward-backward direction of the laundry treatment device 1, i.e., in the direction indicated by the arrow "left-right direction" in Fig. 1. Indicated direction.

[0035] The second drum component 30 is arranged at a distance from the first drum components 20, with at least two first drum components 20 positioned to the left and above and to the right above the second drum component 30. By arranging the second drum component 30 below at least two first drum components 20, the vertically stacked construction reduces the lateral space requirement of the laundry treatment device 1, thereby keeping the overall dimensions of the laundry treatment device 1 reasonable.

[0036] Furthermore, the first drum component 20 and the second drum component 30 can be used to perform the same laundry treatment functions or to perform different laundry treatment functions. For example, in some embodiments, the first drum component 20 and the second drum component 30 can be used to wash or dry the same type of clothing or to wash or dry different types of laundry.For example, the first drum component 20 can be used for washing or drying underwear, socks, and similar items, or children's clothing; the second drum component 30 can be used for washing or drying outerwear and similar items, thus enabling appropriate washing or drying operations for laundry of different sizes or with different washing or drying requirements, thereby increasing the efficiency and reliability of laundry treatment. In other embodiments, the first drum component 20 is used for washing laundry, and the second drum component 30 for drying laundry, thus providing various laundry treatment functions.

[0037] It should be explained that the first drum component 20 and the second drum component 30 can operate simultaneously or separately.

[0038] The at least two first drum components 20 are located to the left and right above the second drum component 30. This means that the space above the second drum component 30 is divided into a left upper space and a right upper space, with some of the first drum components 20 located in the left upper space and others in the right upper space. Since the space directly above the second drum component 30 is relatively small compared to the left and right upper spaces, this arrangement allows the space directly above the second drum component 30 to be bypassed, and the positions to the left and right above the second drum component 30 to be fully utilized.

[0039] This refers to Fig. 2 and Fig. 3. Referenced. In the vertical projection onto a plane perpendicular to the axis of the first drum component 20, the connecting line from the center point of the second drum component 30 to the center point of one of the first drum components 20 forms a first straight line (see Z1 in Fig. 3), and the connecting line from the center point of the second drum component 30 to the center point of the other first drum component 20 forms a second straight line (see Z2 in Fig. 3) The angle (see C in Fig. 3) The angle between the first straight line Z1 and the second straight line Z2 is not less than 45°, that is, C≥45°, for example, C can be 45°, 50°, 55° or 56°.

[0040] It is understandable that the connecting line of the centers of the two first drum components 20 forms a third straight line (see Z3 in Fig. 3) The first straight line Z1, the second straight line Z2, and the third straight line Z3 can enclose a triangle, with the third line acting as the opposite side of angle C, and the minimum angle C corresponding to the minimum length of the third straight line Z3. This increases the distance between the first two drum components 20 in the left-right direction, thereby creating more space between or below the two first drum components 20. This space can be used to install components or to accommodate part of the second drum component 30. This contributes to a more compact structure and helps to minimize the vertical dimensions of the laundry treatment device 1.

[0041] In this embodiment, due to the angle (see C in Fig. 3) The angle between the first straight line Z1 and the second straight line Z2, which is not less than 45°, increases the distance between the two first drum components 20 in the left-right direction, and also increases the minimum distance between the connection points of the two first drum components 20 with the support body 10 in the left-right direction. When one of the first drum components 20 is in operation and the vibration generated by the first drum component 20 is transmitted to the support body 10, the influence of the local vibration of the support body 10 on the other first drum component 20 is reduced.When both first drum components 20 are operating simultaneously, the distance between the positions where the vibrations generated by each of the two first drum components 20 are transmitted to the support body 10 is relatively large. This prevents the vibrations generated by the two first drum components 20 from easily influencing each other, thus reducing the vibration amplitude of the support body 10. It should be noted that in the prior art, the angle between the first straight line Z1 and the second straight line Z2 is approximately 20–30°, which is relatively small. The two first drum components 20 are also very close to each other in the left-right direction, and the distance between the connection points of the two first drum components 20 with the support body 10 is also relatively small in the left-right direction.When the first drum component 20 vibrates, the probability of a collision between the two first drum components 20 is relatively high; furthermore, the vibrations of the two first drum components 20 tend to superimpose on each other when transmitted to the carrier body 10, resulting in a relatively large vibration amplitude of the carrier body 10.

[0042] In a standard housing, typically 840-860 mm high, a drum component with a capacity of 10 kg is usually installed, with an outer diameter of 480-570 mm. Therefore, the space for two first drum components 20 within the standard housing is limited. The angle between the first straight line Z1 and the second straight line Z2 is no less than 45°, allowing the first drum component 20 to utilize the space on its left and right curved outer sides. This provides some vertical space savings and makes the arrangement more compact and efficient.

[0043] In some embodiments, compare Fig. 2 and Fig. 3, the angle C between the first line Z1 and the second line Z2 is not greater than 60°, i.e. 60°≥C, for example C can be 60°, 56°, 55° or 50° etc.

[0044] In this embodiment, the width of a standard housing is generally 590 mm to 610 mm. Such an angular adjustment ensures that the distance between the centers of the two first drum components 20 does not become too large, thus guaranteeing that there is a sufficiently large space in the support body 10 to accommodate the first drum component 20, which is advantageous for giving the outer diameter of a single first drum component 20 a reasonable dimension.

[0045] For example, the number of first drum components 20 is two, wherein the two first drum components 20 are arranged symmetrically along the vertical center plane of the second drum component 30. That is, the two first drum components 20 are arranged symmetrically to the left and right above the second drum component 30. In this embodiment, the first line and the second line have the same length, which allows the first line, the second line, and the third line to enclose an isosceles triangle, thus ensuring a convenient arrangement of the first drum component 20 and the second drum component 30, which contributes to improving the space utilization efficiency of the laundry treatment device 1.

[0046] For example, at 60°≥C≥45°, according to the cosine formula, the ratio of the length of the third line Z3 to the length of the first line Z1 can be 0.765~1.0.

[0047] In some embodiments, see Fig. 3 and Fig. 4, in the perpendicular projection onto a plane perpendicular to the axis of the first drum component 20, the shortest distance (hereinafter referred to as E) between the first drum component 20 and the second drum component 30 along the first straight line Z1 or the second straight line Z2 is 15 mm~35 mm, i.e. 15 mm≤E≤35 mm, for example E is 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 25 mm, 30 mm or 35 mm.

[0048] This allows a certain safety distance to be maintained between the first drum component 20 and the second drum component 30, thereby reducing the possibility of collisions between the first drum component 20 and the second drum component 30 during operation and increasing the operational stability of the laundry treatment device 1. It should be noted that the aforementioned shortest distance E between the first drum component 20 and the second drum component 30 refers to the shortest distance between the outer edge of the first drum component 20 and the outer edge of the second drum component 30 along the direction of the first straight line Z1 or the second straight line Z2.

[0049] In some embodiments, see Fig. 3, the ratio of the distance from the highest position of the second drum component 30 to the bottom of the support body 10 (hereinafter referred to as H2) to the dimension of the support body 10 in the vertical direction of the laundry treatment device 1 (hereinafter referred to as H) is 0.75~0.85, i.e. 0.75≤H2 / H≤0.85, for example H2 / H can be 0.75, 0.76, 0.77, 0.78, 0.79, 0.80, 0.81, 0.82, 0.83, 0.84 or 0.85.

[0050] In this way, the highest position of the second drum component 30 is lower, which allows sufficient space to be kept free above the second drum component 30, which can be used for the arrangement of the first drum component 20 and other components, thus helping to maintain the smallest possible dimensions of the laundry treatment device 1 in the vertical direction.

[0051] For example, the first drum component 20 has a first laundry treatment chamber 20a. The first laundry treatment chamber 20a is used to hold laundry.

[0052] In some embodiments, see Fig. 3 is the ratio of the outer diameter (hereinafter referred to as D1, see Fig. 3) the first drum component 20 to the dimension L of the carrier body 10 in the left-right direction 0.23~0.28, i.e. 0.23≤D1 / L≤0.28. Using the dimension of the carrier body 10 as a standard housing dimension as an example: for L = 600 mm, 168 mm≥D1≥138 mm, for example, D1 is 138 mm, 140 mm, 145 mm, 150 mm, 154 mm, 160 mm, 165 mm, or 168 mm, etc.

[0053] In this embodiment, it is made possible for the first laundry treatment chamber 20a of the first drum component 20 to have a relatively large volume, while at the same time a relatively small dimension in the left-right direction of the support body 10 is assumed, which is advantageous for maintaining an appropriate distance between two adjacent first drum components 20 in the left-right direction.

[0054] It should be explained that the aforementioned dimension L of the support body 10 in the left-right direction refers to the maximum distance between the two first side supports 12 described below in the left-right direction, that is, the distance from the left outer surface of the left-side first side support 12 to the right outer surface of the right-side first side support 12.

[0055] In some embodiments, see Fig. 3, is the ratio of the outer diameter D1 of the first drum component 20 to the dimension of the support body 10 in the vertical direction (hereinafter referred to as H, see Fig. 3) 0.17~0.21, that is, 0.17≤D1 / H≤0.21.

[0056] In this embodiment, it can be ensured that the first laundry treatment chamber 20a of the first drum component 20 has a relatively large volume, while at the same time taking into account that a relatively small dimension is required in the vertical direction of the support body 10, so that more space is kept free below the first drum component 20, which can be used to accommodate the second drum component 30, which helps to ensure that the support body 10 maintains appropriate dimensions in the vertical direction.

[0057] Specifically, within the standard housing, whose height is typically 800 mm to 860 mm, the ratio of the outer diameter of the first drum component 20 to the height of the support body is designed to be 0.17–0.21. The first drum component 20 functions as a small drum for washing small loads, which, compared to the conventional large drum, has a capacity of 10 kg. This ratio of the outer diameter of the first drum component 20 to the height of the support body ensures both a specific capacity for the first drum component 20 and the possibility of accommodating an additional standard-sized large drum within the standard housing.

[0058] Here, for example, the dimension of the carrier body 10 is used as the dimension of the standard housing, where for H = 800 mm: 168 mm ≥ D1 ≥ 136 mm, for example D1 = 136 mm, 138 mm, 140 mm, 145 mm, 150 mm, 154 mm, 160 mm, 165 mm or 168 mm etc.

[0059] It should be clarified that the aforementioned dimension H of the support body 10 in the vertical direction refers to the dimension of the first side support 12 described below and does not include the height of the top support 11 and the base feet of the laundry treatment unit described below. For example, in a standard housing, the dimension H of the support body 10 in the vertical direction is 790 mm to 810 mm, while the height of the entire laundry treatment unit is 840 mm to 860 mm.

[0060] For example, the second drum component 30 has a second laundry treatment chamber 30a. The second laundry treatment chamber 30a serves to hold laundry.

[0061] For example, the outer diameter of the second drum component 30 is larger than the outer diameter of the first drum component 20. The capacity of the second laundry treatment chamber 30a is larger than the capacity of the first laundry treatment chamber 20a. The second drum component 30 can be referred to as the large drum, and the first drum component 20 can be referred to as the small drum.

[0062] Thus, the second drum component is able to handle 30 bulky washes or large quantities of laundry, for example outerwear, while the first drum component is able to handle 20 small-volume washes or small quantities of laundry, for example socks, underwear or baby clothes, etc.

[0063] In this embodiment, the volume of the second laundry treatment chamber 30a is larger than the volume of the first laundry treatment chamber 20a, with the weight of the second drum component 30 arranged below being higher, which advantageously lowers the overall center of gravity of the laundry treatment device 1 and increases the stability of the laundry treatment device 1.

[0064] In some embodiments, as in Fig. 3 shows the ratio of the outer diameter (hereinafter referred to as D2, see Fig. 3) The dimension L of the carrier body 10 of the second drum component 30 in the left-right direction is 0.82~1.0, i.e., 0.82≤D2 / L≤1.0. Using the dimensions of the carrier body 10 as an example of a standard housing: if L = 600 mm, then 600 mm≥D2≥492 mm, for example, D2 is 492 mm, 500 mm, 510 mm, 520 mm, 530 mm, 540 mm, 542 mm, 550 mm, 556 mm, 560 mm, 570 mm, or 600 mm, etc.

[0065] In the relevant technology, single-drum washing machines with the dimensions of the standard housing typically have an outer diameter (of the outer drum) of 480 mm to 570 mm.

[0066] In this embodiment, the second drum component 30 can fully utilize the space of the support body 10 in the left-right direction. Assuming the support body 10 has the same width in the left-right direction (for example, a standard housing width of 600 mm), the volume of the second drum component 30 becomes comparable to the volume of single-drum washing machines from the prior art. In this way, without reducing the volume of the large drum, at least two additional small drums can be added to improve the space utilization of the laundry treatment machine 1.

[0067] In some embodiments, see Fig. 3. The ratio of the outer diameter D2 of the second drum component 30 to the dimension H of the support body 10 in the vertical direction is 0.6~0.75, that is, 0.6≤D2 / H≤0.75. For the dimensions of the support body 10 as dimensions of the standard housing, for example: if H is 800 mm, then 600 mm≥D2≥480 mm, for example, D2 is 480 mm, 490 mm, 500 mm, 510 mm, 520 mm, 530 mm, 540 mm, 542 mm, 550 mm, 556 mm, 560 mm, or 600 mm, etc.

[0068] In this embodiment, the volume of the second drum component 30 corresponds to the volume of a prior art single-drum washing machine, wherein the second drum component 30 occupies an appropriate dimension in the vertical direction of the support body 10, thereby providing sufficient space for the installation of the upper first drum component 20, which is advantageous in order to keep the support body 10 in appropriate dimensions in the vertical direction.

[0069] In some embodiments, see Fig. 3, the ratio of the outer diameter D1 of the first drum component 20 to the outer diameter D2 of the second drum component 30 is 0.31~0.35, i.e. 0.31≤D1 / D2≤0.35. For example, D1 / D2 can be 0.31, 0.32, 0.33, 0.34 or 0.35.

[0070] It is understandable that an appropriate volume ratio between the large drum and the small drum can be ensured, so that in the limited space of the laundry treatment machine both the large drum can accommodate bulky laundry or large quantities of laundry and the small drum can accommodate smaller laundry or small quantities of laundry.

[0071] In some embodiments, see Fig. 3, the first drum component 20 and the second drum component 30 point in projection onto a vertical plane parallel to the axis of the first drum component 20 (hereinafter referred to as B, see Fig. 3) an overlap area.

[0072] It is understandable that the vertical plane runs parallel to the height direction of the laundry treatment device 1, whereby the overlap area exhibited by the projections of the first drum component 20 and the second drum component 30 causes the dimension of the projections of the first drum component 20 and the second drum component 30 in the height direction to be smaller than the sum of the outer diameter of the first drum component 20 and the outer diameter of the second drum component 30. This favors a more compact structure and ensures that the dimension of the laundry treatment device 1 in the height direction is kept as small as possible.

[0073] For example, the number of first drum components 20 is two, with part of the second drum component 30 located in the space between the two first drum components 20. Thus, the projection of the part of the second drum component 30 located between the two first drum components 20 onto the vertical plane B overlaps with the projection of the first drum component 20 and forms the aforementioned overlap area.

[0074] In some embodiments, see Fig. 3, is the ratio of the dimension (hereinafter referred to as H1, see Fig. 3) of the overlap area in the vertical direction to the outer diameter D1 of the first drum component 20 0.1~0.4, i.e. 0.1≤H1 / D1≤0.4, for example H1 / D1 is 0.10; 0.11; 0.12; 0.123; 0.13; 0.14; 0.15; 0.20; 0.25; 0.30; 0.35 or 0.40 etc.

[0075] It is understandable that the ratio of dimension H1 of the overlap area in the vertical direction to the outer diameter D1 of the first drum component 20 is appropriate, thus ensuring a compact structure both vertically and horizontally. In particular, an adequate safety distance is maintained between the first drum component 20 and the second drum component 30 to prevent collisions between them during operation. If the aforementioned overlap area of ​​the first drum component 20 and the second drum component 30 exceeds 0.4, the first drum component 20 and the second drum component 30 would have to occupy a very large space horizontally, significantly increasing the dimensions of the support body 10 in this direction.

[0076] In some embodiments, see Fig. 2 and Fig. 3, the laundry treatment device 1 comprises a first connecting element 40 and a second connecting element 50.

[0077] The first connecting element 40 is connected at one end to the first drum component 20 and rotatably coupled at the other end to the support body 10. This means that the first drum component 20 can rotate about the axis of the other end of the first connecting element 40. It should be noted that the rotatable connection does not necessarily result in permanent rotation, but under certain circumstances allows vibrations, for example during the operation of the laundry treatment device 1, whereby the first drum component 20 experiences vibrations and can rotate about the axis of rotation.

[0078] The axis of rotation of the first connecting element 40 can be referred to as the first axis (see Z in Fig. 2).

[0079] The first drum component 20 is rotatable about the first axis relative to the carrier body 10. It is understood that the first drum component 20 performs a rotary motion about the first axis. The inner drum of the first drum component 20 is rotatable about its own axis.

[0080] The first connecting element 40 serves to establish a force transmission relationship between the first drum component 20 and the support body 10, wherein at least a part of the weight force of the first drum component 20 is transferred to the first connecting element 40, which transmits this weight force to the support body 10.

[0081] It should be understood that the first axis can be designed as a virtual straight line.

[0082] The second connecting element 50 is connected at one end to the first drum component 20 and at the other end to the support body 10. The second connecting element 50 is designed as an elastic component.

[0083] The first connecting element 40 and the second connecting element 50 are arranged on opposite sides of the vertical midplane of the first drum component 20, the vertical midplane being a vertical plane passing through the axis of the first drum component 20, as shown in Fig. 3 with B shown. Thus, the combined action of the second connecting element 50 and the first connecting element 40 advantageously ensures that the first drum component 20 maintains a force equilibrium and exhibits good stability, thereby preventing the first drum component 20 from exhibiting a cantilever force state (if the first connecting element 40 and the second connecting element 50 are both located on the same side of the vertical mid-plane B, this force form can be understood as a cantilever force state, whereby this force distribution is unfavorable and leads to failure or damage of certain structures at the connection point).

[0084] It is understandable that, during vibrations of the first drum component 20, the effective length of the second connecting element 50 can change due to its elasticity. This allows the second connecting element 50 and the first connecting element 40 to rotate the first drum component 20 around the axis of rotation of the first connecting element 40, thus dissipating vibrational energy. Furthermore, the first connecting element 40 is able to hold the first drum component 20 as a whole with a substantially fixed axis of rotation (i.e.,(the position of the first axis will not shift noticeably), wherein the first drum component 20 has virtually no displacement in the radial direction around the first axis as its center point, but rotates around the axis of rotation, so that the first drum component 20 and other structures in the aforementioned radial direction can maintain a relatively small safety distance, which is conducive to a compact structure.

[0085] It should be explained that the specific structure of the second connecting element 50 is not limited and may, for example, comprise at least one damper or suspension spring (where the suspension spring is a form of the first elastic element). The damper may be a damper used in drum washing machines according to the prior art, which will not be discussed further here.

[0086] For example, the elasticity of the second connecting element 50 is greater than the elasticity of the first connecting element 40.

[0087] It is to be explained that the elasticity of the second connecting element 50 is greater than the elasticity of the first connecting element 40, encompassing the following two cases: Firstly, the first connecting element 40 has almost no elasticity (can be understood as a mechanically rigid component); secondly, the first connecting element 40 may have some elasticity, but this elasticity is less than the elasticity of the second connecting element 50.

[0088] The second connecting element 40 is shown as an example in the form of a suspension spring.

[0089] In some embodiments, at least a portion of the first outer drum forms a single-piece structure with the first connecting element 40. For example, this could be a one-piece injection-molded structure. This advantageously increases the structural strength and connection reliability at the joint between the first connecting element 40 and the first outer drum; furthermore, the assembly process between the first connecting element 40 and the first outer drum can be eliminated, thus saving assembly time.

[0090] It should be noted that in some embodiments the entire first outer drum and the first connecting element 40 can form a single-piece structure. In other embodiments, the first outer drum consists of at least two separate components that are connected to each other, with the first connecting element 40 being integrally formed with one of these components.

[0091] In some embodiments, the outer drum is made of plastic material, wherein the first connecting element 40 is designed as a projection that extends above one side of the first outer drum, the projection being integrally formed with the first outer drum. This results in a simple structure, and the dimensions of the projection are relatively small, which contributes to increasing the rigidity of the projection and meets the application requirements.

[0092] In some embodiments, see Fig. 2, the axis of rotation of the first connecting element 40 runs parallel to the axis of the first drum component 20. The first axis can run essentially parallel to the forward and reverse direction of the laundry treatment device 1.

[0093] This means that the first drum component 20 can rotate around a horizontal axis, which makes the movement of the first drum component 20 more stable and promotes the absorption of the lateral vibration energy of the first drum component 20, which increases the damping effect and improves the overall stability of the laundry treatment device 1.

[0094] In some embodiments, the laundry treatment device 1 comprises a connecting shaft 60, wherein at least one of the support body 10 and the first connecting element 40 is formed with a shaft bore 42, wherein the connecting shaft 60 is passed through the shaft bore 42 in order to rotatably connect the first drum component 20 to the support body 10.

[0095] It is understood that at least one of the aforementioned first connecting element 40 and the support body 10 is provided with a shaft bore 42, wherein the connecting shaft 60 is passed through the shaft bore 42, wherein the first connecting element 40 may be provided with a shaft bore 42, wherein one end of the connecting shaft 60 is fixedly connected to the support body 10 and the other end is passed through the shaft bore 42 of the first connecting element 40; It may also be that the support body 10 is provided with a shaft bore 42, wherein one end of the connecting shaft 60 is fixedly connected to the first connecting element 40 and the other end is passed through the shaft bore 42 of the support body 10;It may further be provided that both the first connecting element 40 and the support body 10 are provided with shaft bores 42, wherein one end of the connecting shaft 60 is passed through the shaft bore 42 of the support body 10 and the other end through the shaft bore 42 of the first connecting element 40.

[0096] In some embodiments, see Fig. 5 and Fig. 6, the first connecting element has a connecting part 41, wherein the connecting part 41 is formed with a shaft bore 42 and the connecting shaft 60 is passed through the shaft bore 42. In this way, the combined structure of connecting shaft 60 and connecting part 41 can form the mechanical stress state of a simply supported beam.

[0097] According to Fig. 5 and Fig. 6 The laundry treatment device comprises a vibration damping sleeve 70 and a bushing 80, wherein the bushing 80 is mounted on the outer circumferential surface of the connecting shaft 60 and the vibration damping sleeve 70 is clamped between the outer circumferential surface of the bushing 80 and the wall of the shaft bore 42.

[0098] This means that the connecting shaft 60 is not in direct contact with the wall of the shaft bore 42, as the vibration damping sleeve 70 separates them. On the one hand, this reduces frictional wear between the two and increases the fit stability between the connecting shaft 60 and the shaft bore 42; on the other hand, the vibration damping sleeve 70 also buffers, dampens, and absorbs shocks, thereby reducing the noise transmitted to the support body 10 and increasing the operational stability of the laundry treatment device 100. The stiffness of the bushing 80 is greater than that of the vibration damping sleeve 70, and the combined structure consisting of the connecting part 41, the vibration damping sleeve 70, and the bushing 80 is rotatable around the connecting shaft 60. The bushing 80 can be made of metal, for example, from metallic materials such as copper, steel, or similar materials.The metal bushing 80 is wear-resistant and is able to rotate relative to the connecting shaft 60 in order to absorb the vibration energy generated when the first drum component 20 rotates.

[0099] The vibration damping sleeve 70 can be designed as an elastic component, for example made of elastic materials such as rubber, silicone gel or polyurethane.

[0100] In the prior art, the first connecting element 40 is rigidly connected to the support body 10, with no damping between the first connecting element 40 and the support body 10. In the present application, the vibration transmitted to the support body 10 from the first drum component 20 by the additional arrangement of the vibration damping sleeve 70 in the presence of a connecting shaft 60 can be further reduced, so that the vibration transmitted to the housing of the laundry treatment device 100 during the vibration process of the first drum component 20 is correspondingly reduced and the user experience is improved.

[0101] In some embodiments, see Fig. 1 and Fig. 3, the support body 10 comprises a deck support 11 and two first side supports 12, which are spaced apart from each other in the left-right direction of the laundry treatment device 1, wherein the deck support 11 is connected at its two opposite ends in the left-right direction to the two first side supports 12, and the deck support 11 and the two first side supports 12 enclose an installation space 10a.

[0102] For example, one of the first side supports 12 can be arranged to the left of the deck support 11, while the other first side support 12 is arranged to the right of the deck support 11.

[0103] Here, the deck support 11 and the two first side supports 12 exhibit a certain structural strength and form structures that can fulfill a load-bearing function.

[0104] For example, the first connecting element 40 is arranged closer to the first side support 12 relative to the second connecting element 50. For example, in the case of the upper left first drum component 20, of the first connecting element 40 and second connecting element 50 connected to the upper left first drum component 20, the first connecting element 40 is arranged closer to the first side support 12 on the left than the second connecting element 50. In the case of the upper right first drum component 20, of the first connecting element 40 and second connecting element 50 connected to the upper right first drum component 20, the first connecting element 40 is arranged closer to the first side support 12 on the right than the second connecting element 50.

[0105] In this embodiment, the first connecting element 40 is located relatively close to the edge of the support body 10 in the left-right direction, whereby the edge regions can offer higher structural strength and stiffness, reducing the vibration amplitude and thus improving the stability of the laundry treatment device 1. Since the first connecting element 40 is located relatively close to the edge of the support body 10 in the left-right direction, the axis of rotation of the first drum component 20 is located at the edge during vibrations, i.e.,the first axis, on the left or right upper side of the support body 10 and also close to the edge of the support body 10 in the left-right direction, whereby the rotation path of the first drum component 20 runs in the upper left or upper right area of ​​the support body 10, which allows optimal use of the space at the edges of the support body 10 in the left-right direction, can create a larger installation space for the second drum component 30 and can reduce the probability of interference between the first drum component 20 and the second drum component 30.

[0106] In some embodiments, the first connecting element 40 is connected with its end furthest from the first drum component 20 to the deck support 11 or the first side support 12 via a connecting shaft 60; and / or the second connecting element 50 is connected with its end furthest from the first drum component 20 to the deck support 11 or the first side support 12.

[0107] It should be explained that the foregoing can encompass the following several situations. First type: The first connecting element 40 is connected to the deck support 11 via a connecting shaft 60 at its end furthest from the first drum component 20, and the second connecting element 50 is connected to the deck support 11 at its end furthest from the first drum component 20. Second type: The first connecting element 40 is connected to the deck support 11 via a connecting shaft 60 at its end furthest from the first drum component 20, and the second connecting element 50 is connected to the first side support 12 at its end furthest from the first drum component 20.Third type: The first connecting element 40 is connected with its end furthest from the first drum component 20 via a connecting shaft 60 to the first side support 12, and the second connecting element 50 is connected with its end furthest from the first drum component 20 to the deck support 11.

[0108] In some embodiments, with reference to Fig. 3, is the ratio of the distance in the left-right direction from the connection position of the first connecting element 40 with the support body 10 to the connection position of the second connecting element 50 with the support body 10 (hereinafter referred to as L2, see Fig. 3) the outer diameter D1 of the first drum component 20 is not less than 0.7, i.e. L2 / D1≥0.7, for example L2 / D1 is 0.7, 0.8, 0.84, 0.9 or 1.0 etc.

[0109] It is understandable that the first drum component 20 establishes a force transmission path to the support body 10 through the first connecting element 40 and the second connecting element 50, whereby the connection position of the first connecting element 40 with the support body 10 is described as the first position 40a and the connection position of the second connecting element 50 with the support body 10 as the second position 50a.

[0110] Thus, the distance between the first position 40a and the second position 50a in the left-right direction is L2, which increases the distance between the first position 40a and the second position 50a in the left-right direction, so that the second connecting element 50 has sufficient room for movement and can better absorb the shock forces occurring during the operation of the first drum component 20, thereby reducing the vibration of the first drum component 20.

[0111] In some embodiments, see Fig. 3, the ratio of the distance L2 in the left-right direction from the connection position of the first connecting element 40 with the support body 10 to the connection position of the second connecting element 50 with the support body 10 to the outer diameter D1 of the first drum component 20 is not greater than 1.4, i.e. 1.4≥L2 / D1, for example L2 / D1 is 1.4; 1.3; 1.2; 1.1; 1.0; 0.9; 0.84; 0.8 or 0.7 etc.

[0112] It is understandable that by reducing the distance between the first position 40a and the second position 50a in the left-right direction, the space occupied by the first connecting element 40 and the second connecting element 50 can be reduced, and it can also be ensured that, in the case of eccentric loading of the first drum component 20, the difference in the forces acting on the first connecting element 40 and the second connecting element 50 is reduced, thereby reducing the failure risk of the first connecting element 40 and the second connecting element 50 and ensuring the operational stability of the first drum component 20.

[0113] In some embodiments, see Fig. 3, in the left-right direction, is the ratio of the shortest distance between the outer circumferential surfaces of two adjacent first drum components 20 to the dimension of the support body 10 0.2~0.4, i.e. 0.2≤L1 / L≤0.4. Using the dimension of the support body 10 as a scale for the dimension of the standard housing as an example, if L is 600 mm, then 240 mm≥L1≥120 mm, for example, L1 can be 120 mm, 130 mm, 140 mm, 150 mm, 160 mm, 162 mm, 170 mm, 180 mm, 190 mm, 200 mm, 210 mm, 220 mm, 230 mm, or 240 mm, etc.

[0114] In this embodiment, with the same width of the support body 10 in the left-right direction, the distance between two adjacent first drum components 20 is appropriately designed as a comparison situation to ensure that the support body 10 has a suitably dimensioned space to accommodate the first drum components 20, which advantageously contributes to the fact that the outer diameter of a single first drum component 20 has an appropriate size.

[0115] The following will refer to Fig. 7 Two comparative examples and four embodiments of the present application are briefly explained.

[0116] The in Fig. The 7 illustrated comparative examples and embodiments are all simulated with increasing rotational speed of the left drum from low to high, with the non-rotating right drum serving as the object of investigation.

[0117] It should be noted that in Fig. 7: the ordinate represents the vibration amplitude (unit: mm); the abscissa represents the angle C between the two first drum components 20 (unit: degrees).

[0118] The maximum vibration of the left drum refers to the maximum vibration amplitude of the first drum component 20 located in the upper left corner (hereinafter referred to as the left drum) during the passage of the resonance peak in operation. The maximum vibration of the right drum refers to the maximum amplitude of the vibration of the first drum component 20 located in the upper right region (hereinafter referred to as the right drum) when the left drum is in maximum vibration.

[0119] The steady-state vibration of the left drum refers to the maximum amplitude of the vibration of the left drum after passing the resonance peak and after a one-minute waiting period; the steady-state vibration of the right drum refers to the maximum amplitude of the vibration of the right drum when the left drum is in steady-state vibration.

[0120] This means that when the left drum is vibrating at its maximum, the maximum vibration of the right drum is measured. When the left drum is vibrating at a steady rate, the steady vibration of the right drum is measured.

[0121] Example 1: The angle C between the first two drum components 20 is 40°.

[0122] Example 2: The angle C between the first two drum components 20 is 65°.

[0123] Embodiment 1 of the present application: The angle C between the two first drum components 20 is 45°.

[0124] Embodiment 2 of the present application: The angle C between the two first drum components 20 is 50°.

[0125] Embodiment 3 of the present application: The angle C between the two first drum components 20 is 55°.

[0126] Embodiment 4 of the present application: The angle C between the two first drum components 20 is 60°.

[0127] Out of Fig.As can be seen from Figure 7, in embodiments 1 to 4, the maximum vibration and the steady-state vibration of the right drum are lower. This means that, with the vibration of the left drum remaining unchanged, the vibration transmitted from the left drum to the right drum is lower at an angle C between 45° and 60°. In the description of this application, references to the terms "an embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or properties described in connection with that embodiment or example are included in at least one embodiment or example of the embodiments of this application.In the present application, the schematic representations of the foregoing terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials, or properties may be combined appropriately in one or more embodiments or examples. Moreover, those skilled in the art may combine the various embodiments or examples described in the present application, as well as the features of different embodiments or examples, provided they do not contradict each other.

[0128] The above descriptions merely represent preferred embodiments of the present application and do not serve to limit the scope of the present application. Various modifications and adaptations of the present application are possible for a person skilled in the art. All modifications, equivalent replacements, improvements, and the like, which are made within the spirit and principles of the present application, are covered by the scope of protection of the present application.

Claims

[1] Laundry treatment device (1), comprising: a support body (10) with an installation space (10a); at least two first drum components (20) which are all arranged in the installation space (10a), wherein the at least two first drum components (20) are spaced apart from each other along a left-right direction of the laundry treatment device (1); a second drum component (30) which is arranged in the installation space (10a), wherein the second drum component (30) is spaced apart from the first drum components (20), and the at least two first drum components (20) are arranged to the upper left and upper right of the second drum component (30); wherein in a perpendicular projection onto a plane perpendicular to an axis of the first drum component (20), a connecting line from a center point of the second drum component (30) to a center point of one of the first drum components (20) forms a first straight line, a connecting line from the center point of the second drum component (30) to a center point of another first drum component (20) forms a second straight line, wherein an angle between the first straight line and the second straight line is not less than 45°. [2] Laundry treatment device (1) according to claim 1, characterized by that the angle between the first line and the second line is not greater than 60°. [3] Laundry treatment device (1) according to claim 1, characterized by, that in the perpendicular projection onto the plane perpendicular to the axis of the first drum component (20), a shortest distance between the first drum component (20) and the second drum component (30) along the first straight line or the second straight line is 15mm~35mm. [4] Laundry treatment device (1) according to claim 1, characterized by , that the ratio of the distance from a highest position of the second drum component (30) to a bottom of the carrier body (10) to the dimension of the carrier body (10) in a height direction of the laundry treatment device (1) is 0.75~0.

85. [5] Laundry treatment device (1) according to claim 1, characterized by, that the ratio of the outer diameter of the first drum component (20) to a dimension of the support body (10) in the left-right direction is 0.23~0.28; and / or the ratio of the outer diameter of the first drum component (20) to a dimension of the support body (10) in a vertical direction of the laundry treatment device (1) is 0.17~0.

21. [6] Laundry treatment device (1) according to claim 1, characterized by , that the ratio of the outer diameter of the second drum component (30) to a dimension of the support body (10) in the left-right direction is 0.82~1.0; and / or the ratio of the outer diameter of the second drum component (30) to a dimension of the support body (10) in a vertical direction is 0.6~0.

75. [7] Laundry treatment device (1) according to claim 1, characterized by , that the ratio of the outer diameter of the first drum component (20) to the outer diameter of the second drum component (30) is 0.31~0.

35. [8] Laundry treatment device (1) according to claim 1, characterized by , that the first drum component (20) and the second drum component (30) have an overlap area in a projection onto a vertical plane parallel to the axis of the first drum component (20). [9] Laundry treatment device (1) according to any one of claims 1-8, characterized by, that the laundry treatment device (1) comprises a first connecting element (40) and a second connecting element (50), wherein one end of the first connecting element (40) is connected to the first drum component (20) and another end is rotatably connected to the support body (10), wherein one end of the second connecting element (50) is connected to the first drum component (20) and another end is connected to the support body (10); wherein the first connecting element (40) and the second connecting element (50) are located on opposite sides of a vertical median plane of the first drum component (20), the vertical median plane being a vertical plane passing through the axis of the first drum component (20); the second connecting element (50) being an elastic element. [10] Laundry treatment device (1) according to claim 9, characterized by, that the ratio of a distance between a connection position of the first connecting element (40) with the carrier body (10) and a connection position of the second connecting element (50) with the carrier body (10) in the left-right direction to the outer diameter of the first drum component (20) is 0.7~1.

4. [11] Laundry treatment device (1) according to claim 9, characterized by, that the support body (10) comprises a deck support (11) and two first side supports (12) spaced apart from each other in the left-right direction of the laundry treatment device (1), the deck support (11) being connected at its two opposite ends in the left-right direction to the two first side supports (12), and the deck support (11) and the two first side supports (12) enclosing the installation space (10a); wherein an end of the first connecting element (40) located away from the first drum component (20) is connected to the deck support (11) or the first side support (12) by means of a connecting shaft (60); and / or an end of the second connecting element (50) located away from the first drum component (20) is connected to the deck support (11) or the first side support (12). [12] Laundry treatment device (1) according to claim 11, characterized by, that in the left-right direction the first connecting element (40) is arranged closer to the first side support (12) relative to the second connecting element (50), wherein an elasticity of the second connecting element (50) is greater than an elasticity of the first connecting element (40). [13] Laundry treatment device (1) according to claim 1, characterized by , that the ratio of a shortest distance between two adjacent first drum components (20) in the left-right direction to a dimension of the carrier body (10) in the left-right direction is 0.2~0.

4. [14] Laundry treatment device (1) according to claim 9, characterized by , that the first drum component (20) comprises a first outer drum and a first inner drum, wherein at least part of the first outer drum and the first connecting element (40) form a one-piece structure. [15] Laundry treatment device (1) according to claim 14, characterized by, that the first outer drum is made of plastic material, the first connecting element (40) is designed as a projection extending above one side of the first outer drum, the projection being formed integrally with the first outer drum; the second connecting element (50) is a suspension spring. [16] Laundry treatment device (1) according to claim 9, characterized by, that the laundry treatment device (1) comprises a connecting shaft (60), a vibration damping sleeve (70) and a bushing (80), wherein the first connecting element (40) has a connecting part (41), the connecting part (41) forming a shaft bore (42), and the connecting shaft (60) is passed through the shaft bore (42); wherein the bushing (80) is mounted on an outer circumferential surface of the connecting shaft (60), wherein the vibration damping sleeve (70) is clamped between an outer circumferential surface of the bushing (80) and a bore wall of the shaft bore (42), wherein a stiffness of the bushing (80) is greater than a stiffness of the vibration damping sleeve (70), and wherein a combination structure consisting of the connecting part (41), the vibration damping sleeve (70) and the bushing (80) is rotatable about the connecting shaft (60).

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