Vibration stabilizer assembly for transporting compressor in refrigeration unit

Abstract

A vibration stabilizer assembly for a compressor in a transport refrigeration unit (TRU) is disclosed. The assembly includes a plurality of first buffers configured between a floor associated with the compressor and a frame of the TRU, where each of the first buffers has a radial stiffness of less than 1000 pounds per inch.

Description

Technical Field

[0001] The invention relates to the field of transport refrigeration units and, more particularly, to a vibration stabilizer assembly for a compressor in a transport refrigeration unit. Summary of the invention

[0002] A vibration stabilizer assembly for a compressor in a transport refrigeration unit (TRU) is described herein. The assembly includes a plurality of first bumpers constructed between a base plate associated with the compressor and a frame of the TRU, wherein each of the first bumpers has a radial stiffness of less than 1000 pounds per inch.

[0003] In one or more embodiments, the first bumper has a radial stiffness of less than 600 pounds per inch. Additionally, in one or more embodiments, the first bumper has a radial stiffness of less than 400 pounds per inch. In one or more embodiments, each of the first bumpers has an axial to radial stiffness ratio of 2:1, 3:1, or 4:1.

[0004] In one or more embodiments, wherein each of the first buffers comprises a first component including a first cylindrical base having a radially extending first flange and a centrally positioned first annular segment extending along a central axis of the first component. Each of the first buffers further comprises a second component including a second cylindrical base having a radially extending second flange and a centrally positioned second annular segment extending along a central axis of the first component. The first component is coaxially configured with the second component such that the first cylindrical base and the second cylindrical base remain in contact and the first annular segment and the second annular segment remain in a straight line.

[0005] In one or more embodiments, each of the first bumpers includes a rigid sleeve coaxially configured and extending longitudinally through the first and second annular sections of the corresponding first bumper.

[0006] In one or more embodiments, the assembly includes a bolt extending through a rigid sleeve associated with each of the first bumpers such that a head of the bolt rests on a top of the first flange, a free end of the bolt extends at least partially outboard from a bottom of the frame through the second flange, and the rigid sleeve extends between a bottom of the head of the bolt and a top surface of the frame, and wherein the free end of the bolt is tightened using a nut to secure the corresponding first bumper to the base plate and the frame.

[0007] In one or more embodiments, the assembly includes a plurality of first holes at a first predefined position on the base plate and a plurality of second holes at a second predefined position on the frame of the TRU, wherein the first holes of the base plate and the second holes of the frame are aligned in a straight line to facilitate fastening of the plurality of first buffers to the base plate and the frame via bolts and nuts.

[0008] In one or more embodiments, each of the first buffers is secured to the base plate and the frame such that a rim area of ​​the corresponding base plate around the first hole rests between first and second flanges around the first and second cylindrical bases while preventing contact between the base plate and the frame.

[0009] In one or more embodiments, the assembly includes a spacer of a first thickness configured between a bottom surface of the rim region and a top surface of the second flange.

[0010] In one or more embodiments, the assembly includes a first gasket constructed between a first flange and a head of a bolt, and a second gasket of a second thickness constructed between a second flange and a top surface of a frame, wherein the second thickness is selected based on a gap between a bottom of the second flange and the frame, and wherein a rigid sleeve extends between the first gasket and the second gasket.

[0011] In one or more embodiments, the assembly includes an annular filler disposed in the plurality of second holes, wherein the annular filler is configured to allow the bolt to extend therethrough while restricting movement of the bolt relative to the frame in the corresponding second holes.

[0012] In one or more embodiments, the assembly includes one or more clamping rings extending around a top end of the compressor and connected to each other, and a mounting plate coupled to at least one of the clamping rings and a frame of the TRU, wherein the mounting plate is coupled to the corresponding clamping ring using at least one second buffer, wherein the second buffer has a radial stiffness of less than 1000 pounds per inch.

[0013] Further described herein is a vibration stabilizer assembly for a compressor in a transport refrigeration unit (TRU). The assembly includes one or more clamping rings extending around a top end of the compressor and connected to each other, and a mounting plate coupled to at least one of the clamping rings and a frame of the TRU, wherein the mounting plate is coupled to a corresponding clamping ring using at least one second bumper, wherein the at least one second bumper has a radial stiffness of less than 1000 pounds per inch.

[0014] In one or more embodiments, the at least one second buffer has an axial to radial stiffness ratio of 6:1.

[0015] In one or more embodiments, both ends of the mounting plate are coupled to corresponding clamping rings using a pair of second buffers, wherein the mounting plate is further coupled to the frame using fasteners.

[0016] In one or more embodiments, the assembly includes a plurality of first bumpers configured between a base plate associated with the compressor and a frame of the TRU, wherein each of the first bumpers has a radial stiffness of less than 1000 pounds per inch.

[0017] In one or more embodiments, each of the first buffers has an axial stiffness ranging from 4000 to 600 pounds per inch and a radial stiffness ranging from 1000 to 300 pounds per inch, and wherein the at least one second buffer has an axial stiffness ranging from 6000 to 600 pounds per inch and a radial stiffness ranging from 1000 to 200 pounds per inch.

[0018] In one or more embodiments, the at least one second buffer is a stud mount including a base plate and a stud element protruding perpendicularly from the base plate.

[0019] The foregoing summary is illustrative only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, features, and techniques of the subject disclosure will become more apparent from the following description taken in conjunction with the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are included to provide a further understanding of the subject disclosure and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the subject disclosure and together with the description serve to explain the principles of the subject disclosure.

[0021] In the drawings, similar components and / or features may have the same reference label. In addition, various components of the same type may be distinguished by having a second label after the reference label that distinguishes among the similar components. If only the first reference label is used in the specification, the description applies to any of the similar components having the same first reference label, regardless of the second reference label.

[0022] Figures 1A to 1D An exemplary view illustrating a vibration stabilizer assembly configured with a compressor in a TRU according to one or more embodiments of the subject disclosure.

[0023] FIG. 2A to FIG. 2D An exemplary view illustrating a first buffer according to one or more embodiments of the subject disclosure.

[0024] Figure 3A and Figure 3BAn exemplary view illustrating a second buffer according to one or more embodiments of the subject disclosure.

[0025] Figure 4 Exemplary views showing a top mounting plate according to one or more embodiments of the subject disclosure. DETAILED DESCRIPTION

[0026] The following is a detailed description of an embodiment of the subject disclosure depicted in the accompanying drawings. The embodiments are so detailed as to clearly convey the subject disclosure. However, the amount of detail provided is not intended to limit the intended variations of the embodiments; on the contrary, it is intended to cover all modifications, equivalents, and alternatives that fall within the spirit and scope of the subject disclosure as defined by the appended claims.

[0027] Various terms are used herein. To the extent a term used in a claim is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.

[0028] In the specification, reference may be made to the spatial relationship between various components and the spatial orientation of various aspects of the components when the device is depicted in the accompanying drawings. However, as will be recognized by those skilled in the art after reading the subject disclosure in its entirety, the components of the invention described herein may be positioned in any desired orientation. Therefore, the use of terms such as "above", "below", "upper", "lower", "first", "second" or other similar terms to describe the spatial relationship between various components or to describe the spatial orientation of aspects of such components should be understood as describing the relative relationship between components or the spatial orientation of aspects of such components, respectively, because the frame, compressor, first buffer, second buffer and corresponding components described herein may be oriented in any desired direction.

[0029] Transport Refrigeration Units (TRUs) play an important role in keeping temperature-sensitive cargo within an optimal temperature range during transport. These units use compressors to circulate refrigerants and manage the temperature within an insulated chamber. The TRU can be fluidly connected to the surrounding environment and the enclosed (cargo) space of a container or trailer associated with a cargo truck or other vehicle. Exemplary transport cargo spaces include cargo areas of light commercial vehicles, cargo trailers, railroad cars, intermodal containers (shipping containers). TRUs can also be used with auxiliary fixed units. TRUs can be configured to maintain a predefined thermal environment within the space. Variable speed compressors are famous for their ability to adapt to changing cooling needs (providing enhanced energy efficiency and temperature control compared to traditional fixed speed compressors).

[0030] However, the implementation of variable speed compressors in TRUs presents certain challenges. One of the key challenges is the excessive noise generated by the compressor when operating at high speeds. As compressor speeds increase, noise and vibration levels can become uncomfortably high, leading to concerns about potential noise pollution for both operators and bystanders. In addition, long-term exposure to excessive noise can have adverse effects on personnel near the TRU.

[0031] Furthermore, operation of a variable speed compressor at high speeds can negatively impact the structural integrity and stability of both the compressor and the TRU as a whole. The increased mechanical forces and vibrations associated with high speed operation can lead to premature wear of components of the TRU and compressor. This accelerated degradation can result in frequent maintenance and repair requirements, leading to increased downtime and operating costs. Furthermore, structural instability caused by vibrations can compromise the overall integrity of the TRU, potentially leading to a shortened lifespan.

[0032] What is therefore needed is a solution that addresses the challenges posed by variable speed compressors in TRUs by providing an improved and effective solution to stabilize the compressor, reduce compressor vibrations, and attenuate noise when operating at high speeds.

[0033] Reference Figures 1A to 1D , a vibration stabilizer assembly 100 (hereinafter referred to as assembly 100) for a compressor 102 in a transport refrigeration unit (TRU) is shown. The assembly 100 may include a plurality of first buffers 200 (collectively referred to herein as first buffers 200 or bottom buffers 200 or first isolators 200) constructed between a bottom plate 106 associated with the compressor 102 and a frame 104-1 of the TRU. The compressor 102 may be a variable speed compressor 102; however, the compressor 102 may also be a single speed compressor 102. In one or more embodiments, the first buffer 200 may be constructed between the bottom plate 106 and the frame 104-1 of the TRU using a bolt and nut assembly so that no contact is maintained between the bottom plate 106 and the frame 104-1 of the compressor 102, and the load or vibration from the bottom plate 106 of the compressor 102 may be transmitted to the frame 104-1 of the TRU via the bolts 210 and the first buffer 200, wherein the first buffer 200 may stabilize the vibration.

[0034] The first bumper 200 may include an annular section, and holes may be provided on the base plate 106 and the frame 104-1 to facilitate fastening the base plate 106 and the frame 104-1 using the first bumper 200 and the bolt and nut assembly. In one or more embodiments, the first bumper 200 may include a rigid sleeve 206 made of steel (but not limited to the like) coaxially configured and extending longitudinally through the corresponding annular section of the first bumper 200. In one or more embodiments, the first buffer 200 can be constructed between the base plate 106 of the compressor 102 and the frame 104-1 of the TRU using a bolt and nut assembly, such that the head 210-1 of the bolt 210 rests on the top of the first buffer 200, and the shank of the bolt 210 extends through the rigid sleeve 206, wherein the free end 210-2 of the shank at least partially extends outboard from the bottom of the frame 104-1 and is further tightened using a nut 216, and the rigid sleeve 206 extends between the bottom of the head 210-1 of the bolt 210 and the top of the frame 104-1. However, in one or more embodiments, the first bumper 200 may be constructed between the base plate 106 of the compressor 102 and the frame 104-1 of the TRU using a bolt and nut assembly such that the head 210-1 of the bolt 210 rests on the bottom of the first bumper 200 and the shank of the bolt 210 extends through the rigid sleeve 206, wherein the free end 210-2 of the shank at least partially extends outboard from the top of the frame 104-1 and is further tightened using a nut 216, and the rigid sleeve 206 extends between the bottom of the head 210-1 of the bolt 210 and the top of the frame 104-1. Later in conjunction with FIG. 2A to FIG. 2D A detailed configuration of the first buffer 200 is described.

[0035] In one or more embodiments, each of the first buffers 200 may have a predetermined profile and be made of an elastomer having an axial to radial stiffness ratio of 2:1, 3:1, or 4:1. In one or more embodiments, the first buffer 200 may have a radial stiffness of less than 1000 pounds per inch. In one or more embodiments, the first buffer 200 may have a radial stiffness of less than 600 pounds per inch. In addition, in one or more embodiments, the first buffer 200 may have an axial stiffness ranging from 4000 to 600 pounds per inch and a radial stiffness ranging from 1000 to 300 pounds per inch. Although various embodiments of the disclosure have been described for first buffers having specific radial and axial stiffness or specific axial to radial ratios, however, the teachings of the disclosure are equally applicable to first buffers having any other values ​​of radial stiffness, axial stiffness, or axial to radial stiffness, which values ​​may be selected based on the weight of the compressor, the drive frequency, the operating speed of the compressor, and the characteristics of the frame or structure on which the compressor is mounted, so as to optimize isolation, and all such embodiments are fully within the scope of the subject disclosure.

[0036] In one or more embodiments, the assembly 100 may include one or more clamping rings 108 extending around the top end of the compressor 102 and connected to each other. The assembly 100 may also include a mounting plate 110 coupled to at least one of the clamping rings 108 and further coupled to the frame 104-2 of the TRU, wherein a connection point 104-2 of the mounting plate 110 on the frame 104-1 of the TRU is different from a connection point 104-1 of the bottom plate 106 on the frame 104-1. The connection point 104-2 of the mounting plate 110 may be at a vertical section of the frame 104-1, and the connection point 104-1 of the bottom plate 106 may be at a bottom horizontal section of the frame 104-1 of the TRU.

[0037] In addition, the mounting plate 110 can be coupled to the corresponding clamping ring 108 using at least one second bumper 300 (also referred to herein as a second bumper 300 or a top bumper 300 or a second isolator 300). In one or more embodiments, the second bumper 300 can be a stud mount made of an elastomer having a radial stiffness of less than 1000 pounds per inch. In one or more embodiments, each of the second bumpers 300 can have an axial to radial stiffness ratio of 6:1. In addition, in one or more embodiments, the second bumpers 300 can have an axial stiffness ranging from 6000 to 600 pounds per inch and a radial stiffness ranging from 1000 to 200 pounds per inch. Although various embodiments of the disclosure have been described with respect to a second damper having specific radial and axial stiffnesses or a specific axial-to-radial ratio, the teachings of the disclosure are equally applicable to a second damper having any other values ​​of radial stiffness, axial stiffness, or axial-to-radial stiffness, which values ​​may be selected based on the weight of the compressor, the drive frequency, the operating speed of the compressor, and the characteristics of the frame or structure on which the compressor is mounted to optimize isolation, and all such embodiments are fully within the scope of the subject disclosure.

[0038] Thus, the first (bottom) buffer 200 may minimize (or isolate) the transfer of loads or vibrations between the base plate 106 and the frame 104-1 of the TRU, while the second (top) buffer 300 may minimize (or isolate) the transfer of loads or vibrations between the top of the compressor 102 and the frame 104-1 of the TRU.

[0039] In addition, the profile or axial to radial stiffness ratio of the first and second buffers 200, 300 can help stabilize vibrations of the compressor 102 and attenuate noise caused by the vibrations. In addition, the rigid sleeve 206 extending through the first buffer 200 can prevent direct contact between the bottom plate 106 (of the compressor 102) and the frame 104-1 of the TRU, or can withstand the impact / load of the bottom plate 106 to the frame 104-1 of the TRU in the event of an elastomer failure of the first buffer 200, thereby acting as a fail-safe mechanism.

[0040] Reference FIG. 2A to FIG. 2D In one or more embodiments, the first buffer 200 may include a first component 202 including a first cylindrical base 202-1 having a radially extending first flange 202-2 and a centrally positioned first annular section extending along a central axis of the first component 202, wherein the first cylindrical base 202-1 and the first flange 202-2 are integral parts of the first component 202, resulting in a unitary structure. The first buffer 200 may also include a second component 204 including a second cylindrical base 204-1 having a radially extending second flange 204-2 and a centrally positioned second annular section extending along a central axis of the first component 204, wherein the second cylindrical base 204-1 and the second flange 204-2 are integral parts of the second component 204, resulting in a unitary structure. The first component 202 can be coaxially configured with the second component 204 so that the first cylindrical base 202-1 and the second cylindrical base 204-1 remain in contact, and the first annular segment and the second annular segment remain in a straight line. In one or more embodiments, the first component 202 and the second component 204 can be different structures, however, the first component 202 and the second component 204 can also be integrally connected to form a single structure.

[0041] The assembly 100 may also include a plurality of first holes at first predefined positions on the base plate 106 and a plurality of second holes at second predefined positions on the frame 104-1 of the TRU. The first holes of the base plate 106 and the second holes of the frame 104-1 may be aligned in line to facilitate fastening the first bumpers 200 to the base plate 106 and the frame 104-1 via the bolts 210 and nuts 216. In one or more embodiments, each of the first bumpers 200 may be fastened to the base plate 106 and the frame 104-1 such that a rim area of ​​the corresponding base plate 106 around the first hole may rest between the first flange 202-2 and the second flange 204-2 around the first cylindrical base 202-1 and the second cylindrical base 204-1 of the first bumper 200 while preventing contact between the base plate 106 and the frame 104-1. Therefore, radial loads or vibrations from the bottom plate 106 may be radially transmitted to the first and second cylindrical bases of the first buffer 200 , and axial loads or vibrations from the bottom plate 106 may be axially transmitted to the first and second flanges of the first buffer 200 .

[0042] In addition, the assembly 100 may include a first gasket 208-1, which is constructed between the first flange 202-2 of the first buffer 200 and the head 210-1 of the bolt 210 to prevent direct contact between the bolt head 210-1 and the first buffer 200, and further evenly distribute the load of the bolt head 210-1 on the first flange 202-2. In addition, the assembly 100 may include a second gasket 208-2 of a second thickness, which is constructed between the second flange 204-2 and the top surface of the frame 104-1 to fill the gap (if any) between the bottom of the second flange 204-2 and the frame 104-1, which may not be required if the compressor 102 is shorter. The second thickness may be selected based on the gap between the bottom of the second flange 204-2 and the frame 104-1 to securely fix the first buffer 200 to the frame 104-1 and the bottom plate 106.

[0043] In one or more embodiments, the bolt 210 may extend through the rigid sleeve 206 associated with each of the first buffers 200 such that the head 210-1 of the bolt 210 rests on top of the first gasket 208-1 and the shank of the bolt 210 extends through the rigid sleeve 206, wherein the free end 210-2 of the shank at least partially extends outboard from the bottom of the frame 104-1 and is further tightened using a nut 216, and the rigid sleeve 206 extends between the first gasket 208-1 and the second gasket 208-2.

[0044] In one or more embodiments, the assembly 100 may include a spacer 212 of a first thickness (such as 1 mm but not limited to the like) configured between the bottom surface of the edge region of the bottom plate 106 and the top surface of the second flange 204-2 to fill the gap (if any) between the bottom plate 106 and the second component 204, however, if there is no gap between the bottom plate 106 and the second component 204, the spacer 212 may not be required. The spacer 212 may also evenly distribute the load of the edge region of the bottom plate 106 on the second flange 204-2 and also prevent the edge region from damaging the elastic body of the second flange 204-2. In one or more embodiments, the spacer 212 may be an annular component having an inner diameter equal to the diameter of the second annular segment and an outer diameter greater than or equal to the diameter of the second flange 204-2.

[0045] In one or more embodiments, the assembly 100 may include an annular filler 214 disposed in the second hole of the frame 104-1. The annular filler 214 may be configured to allow the bolt 210 to extend therethrough while limiting movement of the bolt 210 relative to the frame 104-1 in the corresponding second hole. However, if there is no gap between the bolt 210 and the second hole of the frame 104-1 or if the bolt 210 remains securely disposed in the second hole, the annular filler 214 may not be required.

[0046] Return to reference Figures 1A to 1D In one or more embodiments, the clamping rings 108 at the top of the compressor 102 may be fastened to each other using first fasteners 112, and the mounting plate 110 may be fastened to the frame 104-2 of the TRU using second fasteners 114. Figure 4 As shown in FIG. 1 , the two extreme ends of the mounting plate 110 may include a third hole 110-1 to facilitate coupling the mounting plate 110 to the clamping ring 108 using a pair of second buffers 300. In addition, a fourth hole 110-2 may be provided in the middle of the mounting plate 110 to facilitate coupling the mounting plate 110 to the frame 104-1 using a second fastener 114. The mounting plate 110 may also include reinforcing flanges 110-3, 110-4 extending from the mounting plate 110. In one or more embodiments, the second buffer 300 may be as shown in FIG. Figure 3A and Figure 3B 1 and 12. The stud mounts shown in FIG. 1 and FIG. 13 are schematic diagrams of embodiments of the present invention, and the first fastener 112 and the second fastener 114 may include a nut and bolt assembly.

[0047] Reference Figure 3A and Figure 3BIn one or more embodiments, the second (top) bumper 300 or stud mount 300 may include a base plate 302 made of an elastomer and a stud element 304 protruding vertically from the base plate 302. The base plate 302 may include an aperture 306 at a first end, wherein the stud element 304 protrudes vertically from a second end (opposite the first end) of the base plate 302. The aperture 306 may facilitate fastening the base plate 302 or the second bumper 300 to the clamping ring 108. The second bumper 300 may be configured between the mounting plate 110 and the clamping ring 108 such that the first end of the base plate 302 remains in contact with the clamping ring 108 and the stud element 304 extends through the third hole 110-1 of the mounting plate 110, wherein the base plate 302 is securely fixed between the clamping ring 108 and the mounting plate 110 to form a bumper. The extended stud element 304 may be further glued or fastened to the mounting plate 110.

[0048] It should be apparent to those skilled in the art that, while the various embodiments and figures of the subject disclosure have been described with respect to an assembly having a particular number of first and second bumpers, the teachings of the subject disclosure are equally applicable to different numbers of first and second bumpers based on the size of the compressor, and all such embodiments are fully within the scope of the subject disclosure. In addition, while the various embodiments of the subject disclosure have been described with respect to an assembly having a first bumper having a particular shape and a second bumper being a stud mount, the teachings of the subject disclosure are equally applicable to different designs of first and second bumpers having axial to radial ratios of 4:1 and 6:1, respectively, and all such embodiments are fully within the scope of the subject disclosure. In addition, while the various embodiments of the subject disclosure have been described with respect to an assembly for stabilizing vibrations of a compressor in a TRU, the teachings of the subject disclosure are equally applicable to compressors installed in HVAC systems, etc., and all such embodiments are fully within the scope of the subject disclosure.

[0049] Thus, the present invention (fluid distributor) overcomes the drawbacks, limitations and shortcomings associated with prior variable speed compressors in TRUs by providing an improved and efficient assembly that stabilizes the compressor, reduces compressor vibrations and attenuates noise when operating at high speeds.

[0050] Although the subject disclosure has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for its elements without departing from the scope of the subject disclosure as defined by the appended claims. Modifications may be made to adapt specific circumstances or materials to the teachings of the subject disclosure without departing from the scope of the subject disclosure. Therefore, it is intended that the subject disclosure is not limited to the specific embodiments disclosed, but rather that the subject disclosure includes all embodiments that fall within the scope of the subject disclosure as defined by the appended claims.

[0051] In interpreting the specification, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms "comprises" and "comprising" should be interpreted as referring to elements, components or steps in a non-exclusive manner, indicating that the referenced elements, components or steps may be present or used or combined with other elements, components or steps not explicitly referenced. In the case where the specification claims refer to at least one item selected from the group consisting of A, B, C... and N, the text should be interpreted as requiring only one element from the group, not A plus N or B plus N, etc.

Claims

1. A vibration stabilizer assembly for a compressor in a transport refrigeration unit (TRU), the assembly comprising: a plurality of first buffers constructed between a base plate associated with the compressor and a frame of the TRU, Wherein each of the first buffers has a radial stiffness of less than 1000 pounds per inch.

2. The assembly according to claim 1, wherein Each of the first bumpers has a radial stiffness of less than 600 pounds per inch.

3. The assembly according to claim 1, wherein: Each of the first bumpers has a radial stiffness of less than 400 pounds per inch.

4. The assembly according to claim 1, wherein: Each of the first bumpers has an axial to radial stiffness ratio of 2:1, 3:1, or 4:

1.

5. The assembly according to any one of claims 1 to 4, wherein: Each of the first buffers comprises: a first component including a first cylindrical base having a radially extending first flange and a centrally located first annular section extending along a central axis of the first component; a second component including a second cylindrical base having a radially extending second flange and a centrally located second annular section extending along a central axis of the first component; The first component is coaxially configured with the second component so that the first cylindrical base and the second cylindrical base are kept in contact and the first annular segment and the second annular segment are kept in a straight line.

6. An assembly according to any one of claims 1 to 5, wherein: Each of the first bumpers includes a rigid sleeve coaxially configured and extending longitudinally through the first and second annular sections of the corresponding first bumper.

7. An assembly according to any one of claims 1 to 6, wherein: The assembly includes a bolt extending through a rigid sleeve associated with each of the first bumpers such that a head of the bolt rests on a top of a first flange, a free end of the bolt extends at least partially outboard from a bottom of the frame through a second flange, and the rigid sleeve extends between a bottom of the head of the bolt and a top surface of the frame, and The free ends of the bolts are fastened with nuts to fix the corresponding first buffers to the base plate and the frame.

8. An assembly according to any one of claims 1 to 7, wherein The components include: a plurality of first holes at first predefined locations on the base plate; and a plurality of second holes at second predefined locations on the frame of the TRU, wherein the first holes of the base plate and the second holes of the frame are aligned in a straight line to facilitate fastening of the plurality of first bumpers to the base plate and the frame via bolts and nuts.

9. An assembly according to any one of claims 1 to 8, wherein Each of the first bumpers is secured to the base plate and the frame such that a rim area of ​​the corresponding base plate around the first hole rests between first and second flanges around the first and second cylindrical bases while preventing contact between the base plate and the frame.

10. An assembly according to any one of claims 1 to 9, wherein The assembly includes a spacer of a first thickness configured between a bottom surface of the rim region and a top surface of the second flange.

11. An assembly according to any one of claims 1 to 10, wherein The components include: a first gasket configured between the first flange and the head of the bolt; and a second spacer of a second thickness, the second spacer being configured between a second flange and a top surface of the frame, wherein the second thickness is selected based on a gap between a bottom of the second flange and the frame, Wherein a rigid sleeve extends between the first gasket and the second gasket.

12. An assembly according to any one of claims 1 to 11, wherein The assembly includes an annular filler disposed in the plurality of second holes, wherein the annular filler is configured to allow the bolt to extend therethrough while restricting movement of the bolt relative to the frame in the corresponding second hole.

13. An assembly according to any one of claims 1 to 12, wherein: The components include: one or more clamping rings extending around a top end of the compressor and connected to each other; and a mounting plate coupled to at least one of the clamping rings and a frame of the TRU, wherein the mounting plate is coupled to the corresponding clamping ring using at least one second bumper, Wherein, the at least one second buffer has a radial stiffness of less than 1000 pounds per inch.

14. An assembly according to any one of claims 1 to 13, wherein The at least one second bumper has an axial to radial stiffness ratio of 6:

1.

15. An assembly according to any one of claims 1 to 14, wherein Each of the first bumpers has an axial stiffness ranging from 4000 to 600 pounds per inch and a radial stiffness ranging from 1000 to 300 pounds per inch, and Wherein, at least one second buffer has an axial stiffness ranging from 6000 to 600 pounds per inch and a radial stiffness ranging from 1000 to 200 pounds per inch.

16. A vibration stabilizer assembly for a compressor in a transport refrigeration unit (TRU), the assembly comprising: one or more clamping rings extending around a top end of the compressor and connected to each other; as well as a mounting plate coupled to at least one of the clamping rings and a frame of the TRU, wherein the mounting plate is coupled to the corresponding clamping ring using at least one second bumper, Wherein, the at least one second buffer has a radial stiffness of less than 1000 pounds per inch.

17. The assembly of claim 16, wherein: The at least one second bumper has an axial to radial stiffness ratio of 6:

1.

18. An assembly according to any one of claims 16 and 17, wherein Both ends of the mounting plate are coupled to corresponding clamping rings using a pair of second buffers, and wherein the mounting plate is further coupled to the frame using fasteners.

19. An assembly according to any one of claims 16 to 18, wherein The assembly includes a plurality of first bumpers configured between a base plate associated with the compressor and a frame of the TRU, wherein each of the first bumpers has a radial stiffness of less than 1000 pounds per inch.

20. An assembly according to any one of claims 16 to 19, wherein Each of the first bumpers has an axial to radial stiffness ratio of 2:1, 3:1, or 4:

1.

21. An assembly according to any one of claims 16 to 10, wherein Each of the first bumpers includes a rigid sleeve coaxially configured and extending longitudinally through the corresponding first bumper.

22. An assembly according to any one of claims 16 to 21, wherein Each of the first bumpers has an axial stiffness ranging from 4000 to 600 pounds per inch and a radial stiffness ranging from 1000 to 300 pounds per inch, and Wherein, the at least one second buffer has an axial stiffness ranging from 6000 to 600 pounds per inch and a radial stiffness ranging from 1000 to 200 pounds per inch.

23. An assembly according to any one of claims 16 to 22, wherein The at least one second buffer is a stud mount including a base plate and a stud element protruding perpendicularly from the base plate.

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