Foot assembly and device provided with a foot assembly

Abstract

The application provides a base assembly and a device provided with the base assembly, the base assembly comprising a base arm, a first foot pad and a second foot pad; the main body part of the first foot pad and the main body part of the second foot pad are arranged below the base arm, and the first foot pad and the second foot pad are made of damping materials; the base arm is provided with a fixed end and a supporting end, the fixed end is provided with a fixed part, and the first foot pad is arranged at the supporting end; in the extension direction of the base arm, the second foot pad is arranged between the first foot pad and the fixed part; and the bottom wall of the second foot pad is higher than the bottom wall of the first foot pad. The base assembly realizes secondary damping through a long arm structure on the basis of original primary damping, the vibration generated by a vibration source is further attenuated through the long arm, and then is attenuated again through the first foot pad; when the vibration amplitude is too large, the second foot pad touches the ground, the noise and vibration generated when a compressor and other vibration sources operate are greatly reduced, and the possibility of causing resonance is reduced.

Description

Technical Field

[0001] This invention relates to the field of vibration reduction technology, and more specifically, to a base assembly and a device provided with the base assembly. Background Technology

[0002] In the current refrigerator piston compressor industry, traditional compressors use foot pads mounted on an integrated base to work with the refrigerator's bottom plate, using the damping effect of the foot pads to reduce vibration transmission. However, with the increasing quality of life and the growing size of refrigerators, inverter compressors have become the mainstream product. Inverter compressors, operating at high speeds, bring more severe vibration and noise, while people have more stringent requirements for sound quality. Traditional vibration reduction structures can no longer meet the needs of high-demand refrigerators.

[0003] The compressor, as the "heart" of the refrigerator, generates cooling power through the reciprocating motion of its internal pump assembly. However, this motion also brings multiple problems such as aerodynamic and electromagnetic noise. Vibrations are transmitted to the casing via compression springs and the internal exhaust pipe, and then to the compressor's feet. Some of the vibration is attenuated by the damping effect of the foot pads. However, for vibrations at high speeds due to variable frequency, traditional foot pad damping structures cannot completely attenuate the transmission of vibrations. Residual vibrations are transmitted to the refrigerator's bottom plate through the foot pads, screws, bushings, and other structures, and then to the freezer and refrigerator compartments. The cavity structure inside the freezer and refrigerator compartments amplifies the noise generated by the vibrations like a loudspeaker.

[0004] In the current refrigerator piston compressor industry, there are two main solutions to the problem of excessive compressor noise. One is to optimize the internal pump and motor components of the compressor to reduce the initial levels of aerodynamic and electromagnetic noise. The other is to optimize the vibration transmission path, such as optimizing the casing, compression springs, and foot pad structure. Traditional vibration damping structures consist of four feet placed under the compressor base and bolted to the refrigerator floor. Vibration damping washers reduce the vibration generated by the compressor's operation. However, because this is only a single-stage damping system, its damping capacity is limited as the rotational speed increases. Furthermore, this structure is prone to resonance with the refrigerator casing, failing to meet the requirements of high-end refrigerators. Summary of the Invention

[0005] The first objective of this invention is to provide a base assembly capable of resolving system instability under high vibration conditions.

[0006] A second objective of the present invention is to provide a device having the aforementioned base assembly.

[0007] To achieve the aforementioned first objective, the present invention provides a base assembly, including a base arm, a first foot pad, and a second foot pad; the main body of the first foot pad and the main body of the second foot pad are both disposed below the base arm, and both the first foot pad and the second foot pad are made of vibration damping material; the base arm is provided with a fixed end and a supporting end, the fixed end is provided with a fixing part, and the first foot pad is disposed at the supporting end; in the extending direction of the base arm, the second foot pad is disposed between the first foot pad and the fixing part; in the vertical direction, the bottom wall of the second foot pad is higher than the bottom wall of the first foot pad.

[0008] As can be seen from the above scheme, the base assembly is usually set at the bottom of the vibration source for support. The present invention sets the base assembly into a long strip shape, and the long arm of the base arm can form a primary buffer and vibration reduction. In addition, by setting a first foot pad at the support end, a secondary vibration reduction can be formed. At the same time, in order to alleviate the up-and-down shaking of the compressor caused by the long arm of the base during transportation and use, two first foot pads and second foot pads are set along the extension direction of the base arm. At the same time, the bottom wall of the second foot pad is higher than the bottom wall of the first foot pad. In this way, when the vibration amplitude is too large, the second foot pad touches the ground, thereby solving the instability of the system under high vibration conditions.

[0009] This base assembly, building upon the original primary vibration damping, achieves secondary vibration damping through a long-arm structure. Vibrations generated by the vibration source are further attenuated by the long arm, and then further attenuated by the first foot pad. When the vibration amplitude is too large, the second foot pad touches the ground, significantly reducing the noise and vibration generated by vibration sources such as compressors during operation, and reducing the possibility of resonance. This base assembly has a simple structure, is easy to assemble, and performs well, effectively solving the noise and resonance problems generated by the compressors in refrigerators, wine cabinets, and other refrigeration units.

[0010] A preferred embodiment is that the base arm includes a first support section, a second support section, and a fixing part arranged sequentially along the extension direction; the first support section, the second support section, and the fixing part are all plate-shaped; a first foot pad is installed on the first support section, and a second foot pad is installed on the second support section.

[0011] It is evident that the plate-like structure facilitates the support of the first and second foot pads, and attenuates vibrations through its elastic deformation.

[0012] A further proposed solution is to set the first support segment and the second support segment in parallel, with the second support segment being higher than the first support segment in the vertical direction.

[0013] This demonstrates that it facilitates the elastic deformation of the base arm.

[0014] In a preferred embodiment, the base arm further includes a connecting portion, through which the first support section and the second support section are connected.

[0015] A further option is to have an arc-shaped longitudinal section for the connection part, with the connection part bending upwards.

[0016] This demonstrates that it facilitates the elastic deformation of the base arm.

[0017] A preferred embodiment is that the main body of the first foot pad and the main body of the second foot pad have the same thickness.

[0018] Therefore, using the same size foot pads can prevent the two from being installed incorrectly, thus ensuring a good shock absorption effect.

[0019] To achieve the second objective mentioned above, the present invention provides a device equipped with a base assembly, including a vibration source and the aforementioned base assembly, wherein the base assembly is disposed at the bottom of the vibration source and a fixing part is connected to the vibration source.

[0020] A preferred embodiment is that there are two or more base components, and the multiple base components are arranged at intervals along the circumference of the vibration source; the bottom walls of the first foot pads of each base component are coplanar.

[0021] A further option is to have the bottom walls of the second foot pads of each base component set to be coplanar.

[0022] In a preferred embodiment, the first foot pad is located radially outside the vibration source, and the second foot pad is located on the side of the first foot pad closer to the vibration source.

[0023] Therefore, it can be seen that by adopting the independent long-arm base damping structure of the present invention, the independent extended base arm is used. The flexibility generated by the long-arm base arm serves as a primary damping structure to slow down the transmission of vibration. The height of the first foot pad on the outer ring is slightly higher than that of the second foot pad on the inner ring, so that the second foot pad is suspended in the air. The first foot pad serves as a secondary damping structure to further attenuate the transmission of vibration. When the high-frequency vibration is too large or resonance occurs, the second foot pad touches the ground, changing the vibration structure and protecting the stability of the intake and exhaust pipes.

[0024] A preferred embodiment is that the vibration source is a compressor, and the device with the base assembly is a refrigeration device. Attached Figure Description

[0025] Figure 1 This is a perspective view of an embodiment of the compressor of the present invention.

[0026] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0027] Figure 3 This is a front view of an embodiment of the compressor of the present invention.

[0028] Figure 4 yes Figure 3 A magnified view of a section at point B.

[0029] Figure 5 This is a structural diagram of two base arms on the same side in an embodiment of the compressor of the present invention.

[0030] Figure 6 This is a structural diagram of the base arm in an embodiment of the compressor of the present invention.

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0032] Various exemplary embodiments of the invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the invention or its application or use. The invention can be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the invention thorough and complete, and to fully express the scope of the invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0033] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, without excluding the possibility of encompassing other elements. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] In this invention, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0035] All terms used in this invention (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0036] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0037] Examples of base components and cooling equipment: See Figures 1 to 4 In this embodiment, the refrigeration equipment can be an air conditioning system, a refrigerator, or a wine cabinet, etc.

[0038] The refrigeration equipment includes a compressor 1 and a base assembly 2. The base assembly 2 is located at the bottom of the compressor 1. There are four base assemblies 2, which are arranged circumferentially around the compressor 1. Two of the base assemblies 2 are located on the left side of the compressor 1 and are close to each other, while the other two base assemblies 2 are located on the right side of the compressor 1 and are close to each other.

[0039] See Figures 4 to 6 The base assembly 2 includes a base arm 3, a first foot pad 4, and a second foot pad 5. The first foot pad 4 includes an integrally formed main body 42 and a mounting part 43, and the second foot pad 5 includes an integrally formed main body 52 and a mounting part 53.

[0040] The main body 42 of the first foot pad 4 and the main body 52 of the second foot pad 5 are both located below the base arm 3. In the extending direction of the base arm 3, the second foot pad 5 is located between the first foot pad 4 and the fixing part 33 of the base arm 3. Both the first foot pad 4 and the second foot pad 5 are made of vibration damping material. Preferably, both the first foot pad 4 and the second foot pad 5 are made of high damping material, such as rubber. The base arm 3 is made of a hard material such as metal that can undergo elastic deformation.

[0041] The base arm 3 includes a first support section 31, a second support section 32, and a fixing part 33 arranged sequentially along the extension direction. The two ends of the base arm 3 are a fixing end 34 and a support end 35, respectively. The fixing part 33 is located at the fixing end 34, and the first support section 31 is located at the support end 35. The first support section 31, the second support section 32, and the fixing part 33 are all plate-shaped. The first support section 31 has a first limiting hole 311 extending through it along the thickness direction, and the second support section 32 has a second limiting hole 321 extending through it along the thickness direction. A first foot pad 4 is installed at the first limiting hole 311 of the first support section 31 through its mounting part 43, and a second foot pad 5 is installed at the second limiting hole 321 of the second support section 32 through its mounting part 53. The first support section 31 and the second support section 32 are arranged parallel to each other, and in the vertical direction, the second support section 32 is higher than the first support section 31.

[0042] The base arm 3 also includes a connecting part 36, through which the first support section 31 and the second support section 32 are connected. The longitudinal section of the connecting part 36 is arc-shaped and bends upward. The main body part 42 of the first foot pad 4 and the main body part 52 of the second foot pad 5 have the same thickness. In the vertical direction, the bottom wall 51 of the second foot pad 5 is higher than the bottom wall 41 of the first foot pad 4, that is, there is a height difference between the first foot pad 4 and the second foot pad 5. This allows the first foot pad 4 to touch the ground and the second foot pad 5 to be suspended when the compressor 1 is placed flat. When the vibration amplitude is too large, the second foot pad 5 touches the ground to achieve a better vibration isolation effect and protect the intake and exhaust pipes from twisting and breakage. The bottom walls 41 of the first foot pads 4 of each base assembly 2 are coplanar, and the bottom walls 51 of the second foot pads 5 of each base assembly 2 are coplanar.

[0043] The base assembly 2 is welded and fixed to the compressor 1 by the fixing part 33. In the radial direction of the compressor 1, the first foot pad 4 is located on the radial outer side of the compressor 1, and the second foot pad 5 is located on the side of the first foot pad 4 close to the compressor 1.

[0044] When compressor 1 is placed horizontally on the ground, the outer first foot pad 4 touches the ground, while the inner second foot pad 5 is suspended in the air. The center of gravity of compressor 1 is located in the center of the overall mechanism, and under the influence of gravity, the base arm 3 will undergo a certain degree of bending deformation. During compressor 1 operation, the vibration of compressor 1 is transmitted to the base arm 3. The bending deformation of the base arm 3 provides a certain degree of buffering and vibration reduction, eliminating a large portion of the vibration transmission. Simultaneously, residual vibration is transmitted through the base arm 3 to the four first foot pads 4. Because the first foot pads 4 are made of high-damping material, they effectively eliminate residual vibration transmission, thereby reducing the vibration transmission of refrigerators, wine cabinets, etc. As the compressor 1 speed increases or during transportation, the vibration transmission of compressor 1 gradually increases, and the bending deformation of the base arm 3 intensifies, causing the second foot pad 5 to touch the ground, further weakening the vibration transmission. This also ensures that the vertical movement of compressor 1 is within a suitable range to prevent the compressor 1's intake and exhaust pipes from twisting or breaking.

[0045] As can be seen from the above solutions, the base assembly is usually placed at the bottom of the vibration source for support. This invention, by designing the base assembly as a long strip, allows the long arm of the base to form a primary damping mechanism. Furthermore, by placing a first foot pad at the support end, a secondary damping mechanism is formed. Simultaneously, to alleviate the compressor's vertical swaying caused by the long arm of the base during transportation and use, two foot pads, a first and a second, are arranged along the extension direction of the base arm. The bottom wall of the second foot pad is higher than that of the first foot pad. Thus, when the vibration amplitude is too large, the second foot pad touches the ground, thereby solving the system instability under high vibration conditions. This base assembly, based on the original primary damping, achieves secondary damping through the long arm structure. The vibration generated by the vibration source is further attenuated by the long arm, and then further attenuated by the first foot pad. When the vibration amplitude is too large, the second foot pad touches the ground, greatly reducing the noise and vibration generated by the compressor and other vibration sources during operation, and reducing the possibility of resonance. This base assembly has a simple structure, is easy to assemble, has good performance, and effectively solves the noise and resonance problems generated by the compressor during operation in refrigerators, wine cabinets, and other refrigeration appliances.

[0046] Example of a device equipped with a base assembly: In this embodiment, the device equipped with a foot assembly includes a vibration source and the foot assembly described in the above-described foot assembly embodiment. The foot assembly is disposed at the bottom of the vibration source, and the fixing part is connected to the vibration source. Optionally, there may be two or more foot assemblies, arranged at intervals along the circumference of the vibration source. The bottom walls of the first foot pads of each foot assembly are coplanar, and the bottom walls of the second foot pads of each foot assembly are coplanar. Furthermore, in the radial direction of the vibration source, the first foot pad is located on the side of the second foot pad furthest from the vibration source. The vibration source is a device that generates vibration during operation, and can be selected as needed.

[0047] Furthermore, the number of base assemblies can be two or more, with multiple base assemblies arranged at intervals along the circumference of the compressor. The thickness, inner diameter, and outer diameter of the first and second vibration dampers can be changed as needed. The materials of the first and second vibration dampers can also be changed as needed. The first and second support sections can also be coplanar and extend horizontally, with the thickness of the second foot pad being less than the thickness of the first foot pad. The first and second support sections can also be coplanar and inclined, with the second support section higher than the first support section. In base assemblies on the same side, each first support section can also be connected together, and / or each fixing part can also be connected together. The bottom walls of the second foot pads in each base assembly can also be non-coplanar, or only some of the bottom walls of the second foot pads can be coplanar. The number of second foot pads on each base arm can also be two or more, with multiple second foot pads arranged at intervals along the extension direction of the base arm. The above modifications can also achieve the purpose of the present invention.

[0048] Finally, it should be emphasized that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A base assembly, characterized in that, Includes the base arm, the first foot pad, and the second foot pad; The main body of the first foot pad and the main body of the second foot pad are both located below the base arm, and both the first foot pad and the second foot pad are made of vibration damping material; The base arm is provided with a fixed end and a supporting end, the fixed end is provided with a fixing part, and the first foot pad is provided on the supporting end; In the extending direction of the base arm, the second foot pad is disposed between the first foot pad and the fixing part; In the vertical direction, the bottom wall of the second foot pad is higher than the bottom wall of the first foot pad.

2. The base assembly according to claim 1, characterized in that: The base arm includes a first support section, a second support section, and the fixing part arranged sequentially along the extension direction; The first support section, the second support section, and the fixing part are all plate-shaped; The first foot pad is installed on the first support section, and the second foot pad is installed on the second support section.

3. The base assembly according to claim 2, characterized in that... The first support segment and the second support segment are arranged parallel to each other, and in the vertical direction, the second support segment is higher than the first support segment.

4. The base assembly according to claim 2, characterized in that: The base arm also includes a connecting part, through which the first support section and the second support section are connected.

5. The base assembly according to claim 4, characterized in that: The longitudinal section of the connecting part is arc-shaped, and the connecting part is bent upwards.

6. The base assembly according to any one of claims 1 to 5, characterized in that: The main body of the first foot pad and the main body of the second foot pad have the same thickness.

7. A device equipped with a base assembly, characterized in that, It includes a vibration source and a base assembly as described in any one of claims 1 to 6, the base assembly being disposed at the bottom of the vibration source, and the fixing part being connected to the vibration source.

8. The device with a base assembly according to claim 7, characterized in that: The number of base components is two or more, and multiple base components are arranged at circumferential intervals along the vibration source; The bottom walls of the first foot pads of each of the aforementioned base components are arranged on the same plane.

9. The device with a base assembly according to claim 8, characterized in that: The bottom walls of the second foot pads of each of the aforementioned base components are coplanar.

10. The device provided with a base assembly according to any one of claims 7 to 9, characterized in that: In the radial direction of the vibration source, the first foot pad is located radially outside the vibration source, and the second foot pad is located on the side of the first foot pad closer to the vibration source.

11. The device provided with a base assembly according to any one of claims 7 to 9, characterized in that: The vibration source is a compressor, and the device equipped with the base assembly is a refrigeration device.

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