Damping device and household electrical appliance

Abstract

The utility model relates to a damping device and a household appliance, the damping device comprises a shell and a tuning unit arranged in an inner cavity of the shell, the shell is used for sleeving a preset position of a pipeline, and the pipeline drives the shell to vibrate in a first direction; the tuning unit and the inner wall of the shell are arranged in a spaced mode in the vibration direction, the tuning unit can vibrate in the second direction, and the first direction and the second direction are opposite. According to the vibration reduction device, when the pipeline vibrates, the vibration reduction device is driven to move together, the vibration space is reserved between the tuning unit and the inner wall of the shell, the tuning unit generates vibration in the direction opposite to the vibration direction of the pipeline, a part of vibration can be counteracted, and therefore the vibration of the pipeline is reduced, and the vibration reduction effect is achieved; a better damping effect is achieved under the condition of small size and mass, and limitation on design and installation of the pipeline is avoided.

Description

Technical Field

[0001] The present disclosure relates to the field of vibration reduction technology, and in particular to a vibration reduction device and a household appliance. Background Art

[0002] The compressor is a relatively important component in the air conditioner. The condenser and the compressor are connected by a pipeline. In order to avoid excessive pipeline vibration caused by the flow of refrigerant and the operation of the compressor, which may cause excessive stress in the outdoor unit pipeline and worsen noise, a vibration reduction device is usually installed on this section of the pipeline.

[0003] In related technologies, counterweights are installed on pipelines to increase the mass of the pipelines by leveraging their own weight, thereby moving the pipelines away from the system's resonant frequency. However, to ensure effective vibration reduction, the counterweights must be large, which limits the design and installation of the pipelines. Utility Model Content

[0004] In order to overcome the problems existing in the related art, the present disclosure provides a pipeline vibration reduction device and an air conditioner.

[0005] According to a first aspect of an embodiment of the present disclosure, there is provided a vibration damping device, comprising:

[0006] a housing, adapted to be sleeved on a predetermined position of a pipeline, wherein the pipeline drives the housing to vibrate in a first direction; and

[0007] The tuning unit is arranged in the inner cavity of the shell, and is spaced apart from the inner wall of the shell in the vibration direction. The tuning unit can vibrate in a second direction, wherein the first direction and the second direction are opposite.

[0008] Optionally, a vibration frequency of the tuning unit in the second direction is substantially equal to a vibration frequency of the pipeline in the first direction.

[0009] Optionally, the tuning unit includes a vibration-damping element and a vibration-absorbing element, the vibration-absorbing element is arranged between the inner wall of the shell and the vibration-damping element, and when the pipeline vibrates in the first direction, the vibration-damping element vibrates in the second direction.

[0010] Optionally, the vibration-absorbing element and the vibration-absorbing element are coaxially stacked sector blocks, and the vibration-absorbing elements are respectively provided at both ends of the vibration-absorbing element.

[0011] Optionally, the vibration absorbing elements at both ends are respectively provided with fixing pieces, and fasteners passing through the shell are connected to the fixing pieces to fix the tuning unit in the shell.

[0012] Optionally, at least one tuning component is provided on the vibration absorbing element, and the at least one tuning component and the vibration absorbing element can change the vibration frequency of the vibration absorbing element.

[0013] Optionally, the vibration-absorbing element is made of a rigid material, the vibration-absorbing element is made of an elastic material, and the vibration-absorbing element is fixed to the vibration-absorbing element by vulcanization.

[0014] Optionally, the shell has an inner circumferential wall, an outer circumferential wall and end walls closing both end openings, the inner circumferential wall is coaxially sleeved on the pipeline, and the tuning unit is coaxially arranged with the shell and spaced apart from the inner circumferential wall and the outer circumferential wall.

[0015] Optionally, the shell includes two shell parts that are radially buckled together, each shell part is provided with the tuning unit, and the end faces of the two shell parts are provided with indicator arrows, and the direction of the indicator arrows is the same as the vibration direction of the pipeline.

[0016] Optionally, a protective pad is provided on the wall of the shell facing the pipeline.

[0017] According to a second aspect of an embodiment of the present disclosure, a household appliance is provided, comprising the above-mentioned vibration reduction device.

[0018] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: in the vibration damping device provided by the present disclosure, when the pipeline vibrates, the vibration damping device is driven to move together, and a vibration space is left between the tuning unit and the inner wall of the shell. The tuning unit generates a vibration in the opposite direction to the vibration of the pipeline, which can offset part of the vibration, thereby reducing the vibration of the pipeline and playing a vibration reduction role, achieving better vibration reduction effect with a smaller volume and mass, and avoiding restrictions on the design and installation of the pipeline.

[0019] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0021] Figure 1 The figure is a schematic structural diagram showing a vibration reduction device installed on a pipeline according to an exemplary embodiment.

[0022] Figure 2 It is a schematic structural diagram of a vibration reduction device according to an exemplary embodiment.

[0023] Figure 3The figure is a schematic diagram showing the vibration direction of a vibration reduction device according to an exemplary embodiment.

[0024] Figure 4 It is a schematic structural diagram of a shell portion in a vibration damping device according to an exemplary embodiment.

[0025] Figure 5 The figure is a schematic structural diagram of a tuning unit in a vibration reduction device according to an exemplary embodiment.

[0026] Description of Reference Numerals

[0027] 1-housing; 10-housing portion; 11-inner peripheral wall; 12-outer peripheral wall; 13-end wall; 14-slot; 2-tuning unit; 21-vibration damping element; 22-vibration absorbing element; 23-fixing part; 24-tuning part; 3-pipeline; 4-fastener; 6-protective pad. DETAILED DESCRIPTION

[0028] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0029] In this disclosure, unless otherwise indicated, directional terms such as "axial" and "radial" generally refer to directions relative to the central axis of the pipeline in which the vibration damping device provided by the present disclosure is installed. "Inner" and "outer," depending on the context, may refer to the inside and outside of the contour of the corresponding component or its location inside or outside the environment in which it is located. Furthermore, when the following description refers to the accompanying drawings, unless otherwise indicated, identical numerals in different drawings represent identical or similar elements.

[0030] like Figures 1 to 5 As shown, the present disclosure provides a vibration reduction device, which includes a housing 1 and a tuning unit 2 arranged in the inner cavity of the housing 1. Figure 3 As shown, the shell 1 is used to be mounted on a predetermined position of the pipeline 3, and the pipeline 3 drives the shell 1 to vibrate in a first direction. The tuning unit 2 is spaced apart from the inner wall of the shell 1 in the vibration direction, and the tuning unit 2 can vibrate in a second direction, wherein the first direction and the second direction are opposite.

[0031] Here, it should be noted that the vibration reduction device provided by the present disclosure can be applied to the pipes connecting the compressor and condenser of the air conditioner, and can also be applied to any pipes with flowing media passing through and requiring vibration reduction. It can be applied to other scenarios such as vehicles and factories, and can also be applied to other household appliances besides air conditioners. The application to air conditioners will be described in detail below. Figure 3 As shown, the first direction and the second direction here are both along the radial direction of the pipeline 3, the first direction is from inside to outside, and the second direction is from outside to inside.

[0032] In the vibration reduction device provided by the present invention, when the pipeline 3 vibrates, the vibration reduction device is driven to move together. The vibration reduction device is based on the principle of a tuned mass damper (TMD). A vibration space is left between the tuning unit 2 and the inner wall of the shell 1. The tuning unit 2 generates a vibration in the opposite direction to the vibration of the pipeline 3, which can offset part of the vibration, thereby reducing the vibration of the pipeline 3 and playing a vibration reduction role. A better vibration reduction effect is achieved with a smaller volume and mass, avoiding restrictions on the design and installation of the pipeline 3. This is particularly important for air conditioners with limited installation space.

[0033] The tuning unit 2 generates a force opposite to the vibration direction of the pipeline, which can eliminate vibration. By designing the tuning unit 2, the amount of vibration elimination can be adjusted. In the present disclosure, the vibration frequency of the tuning unit 2 in the second direction is roughly equal to the vibration frequency of the pipeline 3 in the first direction, which can be close to or equal here.

[0034] In an exemplary embodiment of the present disclosure, Figure 5 As shown, tuning unit 2 includes a vibration damping element 21 and a vibration absorbing element 22. The vibration absorbing element 22 is positioned between the inner wall of the housing 1 and the vibration damping element 21. When the pipeline 3 vibrates in a first direction, the vibration damping element 21 vibrates in a second direction. The mass, structure, and material of the vibration damping element 21 can be designed and tuned based on the specific vibration frequency of the pipeline 3 to match its primary vibration frequency, thereby achieving optimal vibration reduction within a specific frequency range. The vibration absorbing element 22 can be an elastic block as shown, or it can be damping particles or foam filled within the inner cavity of the housing 1. Vibration of the pipeline 3 is transmitted to the vibration damping element 21 via the vibration absorbing element 22, causing the vibration damping element 21 to vibrate in the second direction, thereby reducing the vibration of the pipeline 3. The vibration absorbing element 22 also absorbs and dissipates the energy generated by the relative motion between the vibration damping element 21 and the pipeline 3, converting the kinetic energy of the system vibration into heat energy for consumption, thereby suppressing the vibration of the pipeline 3.

[0035] In the embodiment shown in the figure, the vibration-damping element 21 and the vibration-absorbing element 22 may be coaxially stacked sector-shaped blocks, with a vibration-absorbing element 22 positioned at each end of the vibration-damping element 21. The vibration-damping elements 21 and 22 may be bonded together using glue or vulcanization. The upper and lower vibration-absorbing elements 22 and the center vibration-damping element 21 form a single unit and are mounted within the housing 1. In other embodiments, the structures of the vibration-damping elements 21 and 22 may be designed to suit the shape of the housing 1. The vibration-damping element 21 may be made of a rigid material, such as a durable metal like cast iron, carbon steel, stainless steel, or ceramic, while the vibration-absorbing element 22 may be made of an elastic material like rubber.

[0036] In this disclosure, Figure 5 As shown, the vibration-absorbing elements 22 at both ends are provided with fixings 23, and fasteners 4 passing through the housing 1 are connected to the fixings 23 to secure the tuning unit 2 within the housing 1. The fixings 23 can be glued or vulcanized to the end faces of the vibration-absorbing elements 22. The fixings 23 have threaded holes, and the fasteners 4 pass through mounting holes in the housing 1 to connect with the fixings 23, thereby securing the tuning unit 2 as a whole within the inner cavity of the housing 1 and transmitting the vibration of the pipeline 3 to the tuning unit 2. The tuning unit 2 integrates mass, stiffness, and damping elements to effectively absorb and dissipate vibration energy, significantly reducing vibration response.

[0037] Furthermore, in the present disclosure, at least one tuning component 24 is provided on the vibration-damping element 21. This at least one tuning component 24 and the vibration-absorbing element 22 are capable of varying the vibration frequency of the vibration-damping element 21. The tuning component 24 can be a bolt threaded onto the vibration-damping element 21 and can be positioned on a sidewall without interfering with the assembly of the tuning unit 2 or its vibration along the vibration direction. The number of tuning components 24 can be increased or decreased as needed, or tuning components 24 of different materials can be replaced to adjust the mass of the vibration-damping element 21, thereby fine-tuning the vibration frequency of the tuning unit 2 and achieving precise adjustment to achieve optimal vibration reduction.

[0038] Regarding the housing 1, in an exemplary embodiment of the present disclosure, as Figure 4 As shown, the housing 1 has an inner circumferential wall 11, an outer circumferential wall 12, and end walls 13 that close the openings at both ends. The inner circumferential wall 11 is coaxially sleeved on the pipeline 3. The tuning unit 2 is coaxially arranged with the housing 1 and spaced apart from the inner circumferential wall 11 and the outer circumferential wall 12. The spacing between the tuning unit 2 and the inner circumferential wall 11 and the outer circumferential wall 12 of the housing 1 ensures that the vibration-damping element 21 has sufficient space to move radially inward or outward to offset the vibration of the pipeline 3.

[0039] The tuning unit 2 can be arranged along the entire circumference of the pipeline 3. In the present disclosure, for easy installation, the housing 1 includes two housing parts 10 that are buckled together in the radial direction. Each housing part 10 is provided with a tuning unit 2. The outer surface of the housing 1 is provided with a circumferentially arranged slot 14. The two housing parts 10 can be fixed by a strap (not shown in the figure). The strap is located in the slot 14, which can stably and firmly fix the vibration reduction device at a predetermined position on the pipeline 3. Figure 4 As shown, a protective pad 6 is provided on the wall of the housing 1 facing the pipeline 3, and a rubber protective layer can be provided between the housing 1 and the pipeline 3 to prevent the pipeline 3 from being worn during relative movement. Figure 2 As shown, an indicator arrow is provided on the end face of the housing 1, and the direction of the indicator arrow is the same as the vibration direction of the pipeline 3. When installing the vibration damping device, it is fixed at the key vibration position of the pipeline 3, and the direction of the indicator arrow is ensured to be consistent with the vibration direction of the pipeline 3. In addition, the vibration directions of the vibration absorbing elements 21 of the tuning units 2 in the two connected housing parts 10 can be different, for example, Figure 3 As shown, when refrigerant suddenly flows into the pipeline 3, both sides of the pipeline 3 will deform radially outward, and the two vibration-absorbing elements 21 move in opposite directions to offset the vibrations on both sides of the pipeline 3 respectively.

[0040] In the vibration damping device provided in the present invention, the design is based on the principle of TMD. When the pipeline 3 vibrates, the vibration damping device mounted on the pipeline 3 will move along with it, and the pipeline 3 will transmit the vibration to the shell 1. Since the vibration damping element 21 is connected to the inner wall of the shell 1 through the vibration absorbing element 22 and the fixing part 23, the vibration can be transmitted to the vibration damping element 21. The vibration damping element 21 and the inner wall of the shell 1 are arranged at intervals, and the vibration damping element 21 will vibrate in the opposite direction to the vibration direction of the pipeline. By designing the material properties of the vibration absorbing element 22 and adjusting the weight of the vibration damping element 21, the vibration frequency of the vibration damping element 21 is close to or consistent with the vibration frequency of the pipeline 3, and a force opposite to the vibration direction is generated on the pipeline 3, thereby reducing the vibration of the pipeline 3. At the same time, the vibration-absorbing element 22 can absorb and dissipate the energy generated by the vibration, thereby suppressing the vibration of the pipeline 3. It can achieve vibration reduction, has a high vibration energy absorption rate, and has a significant vibration reduction effect. At the same time, it can also be adjusted according to the vibration of the pipeline 3, has strong adjustability, and also achieves optimized design in terms of volume and mass, which is more suitable for pipeline design with limited installation space.

[0041] According to the second aspect of the present disclosure, a household appliance is provided, comprising the vibration reduction device described above. The household appliance here may be an air conditioner, and the vibration reduction device may be installed on the pipeline connecting the compressor and the condenser. It has the characteristics of high vibration energy absorption rate and strong adjustability. It can effectively suppress the vibration of the air conditioner outdoor unit pipeline system through precise vibration control, greatly improving the situation of excessive pipeline stress and noise deterioration. At the same time, it extends the service life of the air conditioner outdoor unit equipment and reduces maintenance costs. Of course, the vibration reduction device can also be other household appliances such as refrigerators. Such household appliances have all the beneficial effects of the above-mentioned vibration reduction device, which will not be described in detail here.

[0042] Furthermore, the word "exemplary" is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as "exemplary" is not necessarily to be construed as advantageous over other aspects or designs. Rather, the use of the word exemplary is intended to present concepts in a concrete manner. As used herein, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or." That is, unless otherwise specified or clear from the context, "X applies to A or B" is intended to mean any of the natural inclusive permutations. That is, if X applies to A; X applies to B; or X applies to both A and B, then "X applies to A or B" satisfies any of the aforementioned instances. Furthermore, the articles "a" and "an," as used in this application and the appended claims, are generally understood to mean "one or more," unless otherwise specified or clear from the context to refer to the singular form.

[0043] Likewise, although the present disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. The present disclosure includes all such modifications and variations and is limited only by the scope of the claims. With particular regard to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, terms used to describe such components are intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if not structurally equivalent to the disclosed structure. In addition, although particular features of the present disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations as may be desired and advantageous for any given or particular application. Furthermore, to the extent that the terms "include," "have," "have," "have," or variations thereof are used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term "comprising."

[0044] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

[0045] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

[0046] In the foregoing detailed description, reference is made to the accompanying drawings, which illustrate, by way of illustration, specific aspects of the present disclosure in which it may be practiced. In this regard, terms indicating directions or expressing positional relationships, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc., may be used with reference to the orientation of the figures being described. Since the components of the described devices may be positioned in a plurality of different orientations, the directional terms may be used for illustrative purposes rather than restrictive. It should be understood that other aspects may be utilized and structural or logical changes may be made without departing from the concepts of the present disclosure. Therefore, the following detailed description should not be taken in a limiting sense.

[0047] It should be understood that, unless otherwise specifically noted, the features of the various embodiments of the present disclosure described herein may be combined with each other. As used herein, the term "and / or" includes any one of the relevant listed items and any combination of any two or more thereof; similarly, "at least one of" includes any one of the relevant listed items and any combination of any two or more thereof.

[0048] It should be understood that, unless otherwise expressly specified or limited, the terms "join," "attach," "install," "connect," "connect," "fix," etc. used in the embodiments of the present disclosure should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected, electrically connected, or communicable with each other; they can be directly connected, or indirectly connected through an intermediate medium, and they can be internally connected between two elements or an interactive relationship between two elements, unless otherwise expressly limited. For those skilled in the art, the specific meanings of the above terms in this article can be understood according to specific circumstances.

[0049] Additionally, the term "over" as used in reference to a component, element, or material layer being formed "over" or located "over" a surface may be used herein to mean that the component, element, or material layer is "indirectly" positioned (e.g., placed, formed, deposited, etc.) on the surface such that one or more additional components, elements, or layers are disposed between the surface and the component, element, or material layer. However, the term "over" as used in reference to a component, element, or material layer being formed "over" or located "over" a surface may alternatively have a specific meaning: the component, element, or material layer is "directly" positioned (e.g., placed, formed, deposited, etc.) on the surface, e.g., in direct contact with the surface.

[0050] Although terms such as "first", "second" and "third" may be used herein to describe various components, parts, regions, layers or sections, these components, parts, regions, layers or sections are not limited to these terms. On the contrary, these terms are only used to distinguish one component, part, region, layer or section from another component, part, region, layer or section. Therefore, without departing from the teachings of each example, the first component, part, region, layer or section mentioned in the examples described herein may also be referred to as the second component, part, region, layer or section. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include at least one such feature. In the description herein, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0051] It should be understood that spatially relative terms, such as "above," "upper," "below," and "lower," are used herein to describe the relationship of one element to another element shown in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, an element described as being "above" or "upper" relative to another element would then be "below" or "lower" relative to the other element. Thus, the term "above" encompasses both above and below orientations, depending on the spatial orientation of the device. The device may be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used herein should be interpreted accordingly.

Claims

1. A vibration damping device, characterized in that: include: A housing, configured to be sleeved on a predetermined position of a pipeline, wherein the pipeline drives the housing to vibrate in a first direction; as well as The tuning unit is arranged in the inner cavity of the shell, and is spaced apart from the inner wall of the shell in the vibration direction. The tuning unit can vibrate in a second direction, wherein the first direction and the second direction are opposite.

2. The vibration damping device according to claim 1, characterized in that: The vibration frequency of the tuning unit in the second direction is substantially equal to the vibration frequency of the pipeline in the first direction.

3. The vibration damping device according to claim 1, characterized in that: The tuning unit includes a vibration absorbing element and a vibration absorbing element. The vibration absorbing element is arranged between the inner wall of the shell and the vibration absorbing element. When the pipeline vibrates in a first direction, the vibration absorbing element vibrates in a second direction.

4. The vibration damping device according to claim 3, characterized in that: The vibration absorbing element and the vibration absorbing element are coaxially stacked sector blocks, and the vibration absorbing elements are respectively provided at both ends of the vibration absorbing element.

5. The vibration damping device according to claim 4, characterized in that: Fixing pieces are respectively provided on the vibration absorbing elements at both ends, and fasteners passing through the shell are connected to the fixing pieces to fix the tuning unit in the shell.

6. The vibration damping device according to claim 3, characterized in that: At least one tuning component is provided on the vibration absorbing element, and the at least one tuning component and the vibration absorbing element can change the vibration frequency of the vibration absorbing element.

7. The vibration damping device according to claim 3, characterized in that: The vibration-absorbing element is made of a rigid material, the vibration-absorbing element is made of an elastic material, and the vibration-absorbing element is fixed on the vibration-absorbing element by vulcanization.

8. The vibration damping device according to claim 1, wherein: The shell has an inner circumferential wall, an outer circumferential wall and end walls closing openings at both ends. The inner circumferential wall is coaxially sleeved on the pipeline. The tuning unit is coaxially arranged with the shell and spaced apart from the inner circumferential wall and the outer circumferential wall.

9. The vibration damping device according to claim 1, characterized in that: The shell includes two shell parts that are radially buckled together, each of the shell parts is provided with the tuning unit, and the end faces of the two shell parts are provided with indicator arrows, and the direction of the indicator arrows is the same as the vibration direction of the pipeline.

10. The vibration damping device according to claim 1, wherein: A protective pad is provided on the wall surface of the shell facing the pipeline.

11. A household appliance, characterized in that: The vibration damping device comprises the vibration damping device according to any one of claims 1 to 10.

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