Composite material inlaid vibration reduction structure and compressor

Abstract

The invention provides a composite material inlaid vibration reduction structure and a compressor, relates to the field of compressors, and aims at solving the problem that a vibration reduction rubber mat of an existing compressor cannot give consideration to the vibration reduction effect under the working conditions of high and low rotating speeds, an inner barrel and an outer barrel are combined to form the vibration reduction structure to serve as the vibration reduction rubber mat of the compressor, and the outer barrel limits radial displacement of the inner barrel; the bottoms of the inner cylinder and the outer cylinder are in contact through the vibration reduction ring, the side faces of the inner cylinder and the outer cylinder are in interference fit contact through the embedding protrusions and the embedding grooves, the contact area is reduced, but the length of a vibration transmission path is increased, transverse vibration transmission is reduced, external fundamental frequency resonance noise is optimized, and the vibration reduction effect under the high-rotation-speed working condition is improved; therefore, compressor shaking and vibration control transmitted to the outside are both considered.

Description

Technical Field

[0001] The invention relates to the field of compressors, and in particular to a composite material inlaid vibration reduction structure and a compressor. Background Art

[0002] The compressor foot is installed on the bottom plate of the refrigerator through a vibration-damping rubber pad. The rubber pad structure is cylindrical with an axial through hole in the middle. It is fixed through the middle through hole. There are many ways to fix it. There are two commonly used ways. One is to fasten it to the bottom plate through a screw sleeve, and the other is to set a column on the bottom plate and connect it with a card plate to limit the position. In both connection methods, there is a bottom plate connector in the center through hole of the rubber pad, which is equivalent to a part of the bottom plate. There is a gap between the middle through hole of the rubber pad and the sleeve or column to reduce the contact area and reduce vibration transmission. An inward protrusion is set in the through hole for interference fit with the sleeve or column. The purpose is to ensure axial symmetry, play a positioning and clamping role, and ensure that there is a gap around. The vibration-damping rubber pad not only supports the compressor, but also reduces vibration transmission.

[0003] From the perspective of the rubber pad support, the stiffness and damping of the rubber pad affect the vibration of the compressor housing. The housing is connected to the refrigerator through the suction and exhaust pipes. The vibration of the housing is transmitted through the suction and exhaust pipes, which may cause the resonance and radiation noise of the pipeline. The vibration is transmitted to the water tray and other structural parts, which may cause the vibration and radiation noise of the structural parts. Therefore, the vibration of the housing needs to be controlled. Especially when the variable frequency compressor is running at low speed, the modal frequency of the compressor system in the two horizontal directions is close to the speed frequency, which is prone to low speed resonance, increased amplitude, and jitter. Therefore, the lateral support stability of the low speed rubber pad is particularly important. From the perspective of rubber pad vibration transmission, there are two paths for the vibration transmission of the compressor foot. One is to transmit longitudinally to the bottom plate through the rubber pad, and the other is to transmit transversely to the bottom plate connector at the center of the through hole through the rubber pad. The vibration transmission in both directions affects the final bottom plate vibration and radiation noise. Therefore, it is necessary to comprehensively design the stiffness and damping of the rubber pad in the transverse and longitudinal directions to be compatible with the transverse and longitudinal vibration reduction effects. Especially when the variable frequency compressor is running at high speed, the compressor vibration fundamental frequency is close to the refrigerator bottom plate and box mode, which is easy to cause the refrigerator to resonate and radiate low-frequency noise. Therefore, high speed vibration transmission is particularly important.

[0004] The existing rubber pads are made of a single material, and the vibration reduction effect is improved through structural design optimization, such as hollowing out the inside, reducing wall thickness, reducing stiffness, or increasing the rubber pad height, reducing stiffness, etc. However, this will also lead to the problem of poor lateral support stability, and it is impossible to take into account high and low speed conditions, as well as the compressor jitter and vibration transmitted to the refrigerator. In addition, the development trend of refrigerators makes the height of compressors shorter and shorter, and excessively high rubber pads result in height restrictions and cannot be installed. Summary of the invention

[0005] The purpose of the present invention is to address the defects of the prior art and provide a composite material inlaid vibration reduction structure and a compressor. The vibration reduction structure is formed by combining an inner cylinder and an outer cylinder as a vibration reduction rubber pad of the compressor. The outer cylinder limits the radial displacement of the inner cylinder, reducing the low-speed amplitude and jitter of the compressor. The bottoms of the inner cylinder and the outer cylinder are in contact through a vibration reduction ring, and the sides are in contact through interference fit of an interlocking protrusion and an interlocking groove, which reduces the contact area but increases the path, thereby improving the vibration reduction effect under high-speed conditions, thereby taking into account both the compressor jitter and the vibration control transmitted to the outside.

[0006] The first object of the present invention is to provide a composite material inlaid vibration damping structure, which adopts the following scheme:

[0007] It includes an outer cylinder with a stepped hole and an inner cylinder with a through hole. The stepped hole is composed of a mounting hole, a step annular surface and a matching hole. One end of the inner cylinder extends into the mounting hole. A mounting groove is provided on the inner cylinder outside the mounting hole. An engaging protrusion is provided on the outer circumferential wall of the inner cylinder located at the mounting hole. An engaging groove is provided on the inner circumferential surface of the mounting hole. The engaging protrusion and the engaging groove form an interference fit. A vibration-damping ring protruding from the end surface is provided on the end surface of the inner cylinder located in the mounting hole. The vibration-damping ring abuts against the step annular surface. The matching hole fits the external fixing component, and the through hole is sleeved outside the fixing component.

[0008] Furthermore, the outer tube and the inner tube are made of different materials, the rigidity of the outer tube is greater than the rigidity of the inner tube, and the damping of the outer tube is less than the damping of the inner tube.

[0009] Furthermore, the engaging protrusions are continuously distributed along the circumferential direction of the inner tube to form an annular protrusion, and the engaging grooves are continuously distributed along the circumferential direction of the mounting hole of the outer tube to form an annular groove, and the engaging protrusions are embedded in the engaging grooves in a one-to-one correspondence.

[0010] Furthermore, the segment of the inner tube protruding into the mounting hole serves as a first matching portion, and the first matching portion has a plurality of interlocking protrusions arranged in sequence along the axial direction of the through hole. The inner wall of the mounting hole forms a second matching portion, and the second matching portion has a plurality of interlocking grooves arranged in sequence along the axial direction of the mounting hole. The non-interlocking protrusion position of the first matching portion is clearance-matched with the non-interlocking groove position of the second matching portion.

[0011] Furthermore, the vibration damping ring is coaxially distributed with the through hole, and a plurality of vibration damping rings are sequentially distributed along the radial direction of the through hole.

[0012] Furthermore, the vibration damping ring, the fitting protrusion and the fitting groove are all semicircular in cross-section along the axial direction of the through hole.

[0013] Furthermore, the mounting groove on the inner cylinder is an annular groove sleeved outside the through hole, one side of the annular groove is an annular pressure-bearing ring portion, and the other side forms an anti-slip protrusion.

[0014] Furthermore, the through hole, the matching hole and the mounting hole are coaxially distributed.

[0015] The second object of the present invention is to provide a compressor with a composite material inlaid vibration damping structure, using the composite material inlaid vibration damping structure as described in the first object.

[0016] Furthermore, an opening is provided on the compressor foot, the opening is sleeved outside the mounting groove and abuts the inner cylinder, the sleeve passes through the through hole and the matching hole and abuts against the base plate, one end of the screw abuts against the sleeve through a gasket, and the other end passes through the sleeve and is connected to the base plate, so that the inner cylinder and the outer cylinder are both sleeved outside the screw and the sleeve.

[0017] Compared with the prior art, the present invention has the following advantages and positive effects:

[0018] (1) In view of the problem that the vibration damping rubber pad of the current compressor cannot take into account the vibration damping effect under high and low speed conditions, the vibration damping structure formed by the combination of inner and outer cylinders is used as the vibration damping rubber pad of the compressor. The outer cylinder limits the radial displacement of the inner cylinder, reducing the amplitude and vibration of the compressor at low speed. The bottom of the inner and outer cylinders are in contact through the vibration damping ring, and the sides are in contact through the interference fit of the interlocking protrusions and interlocking grooves, which reduces the contact area but increases the length of the vibration transmission path, reduces the lateral vibration transmission, optimizes the external fundamental frequency resonance noise, and improves the vibration damping effect under high speed conditions, thereby taking into account the vibration of the compressor and the vibration control transmitted to the outside. A split inner and outer cylinder structure and a double-structure inlaid combination design are adopted, and the directional design is achieved by adjusting the thickness size ratio of the two structures.

[0019] (2) Stiffness refers to the ability of a material to resist deformation when subjected to force, while damping refers to the characteristics of a material that consumes energy and reduces amplitude during vibration. The outer cylinder has high stiffness and low damping, which makes the outer cylinder of the vibration-damping structure have a strong ability to resist deformation when subjected to external force, that is, it is not easy to deform, improves the stability of lateral support, reduces the problem of low-speed vibration, and optimizes the resonance radiation noise of structural parts such as pipelines. The inner cylinder has low stiffness and high damping. Contrary to the outer structure, the inner cylinder of the vibration-damping structure has a weaker ability to resist deformation when subjected to external force, that is, it is more likely to deform, reduces longitudinal vibration transmission, and optimizes the fundamental frequency resonance noise of the external structure. However, the damping is large, which can consume more energy during the vibration process, thereby quickly reducing the amplitude and helping to quickly calm the vibration. The vibration-damping structure can provide sufficient support and deformation resistance for the outside, while absorbing and dissipating vibration energy through large damping inside, thereby achieving a balance between the overall performance of the structure and local vibration control, taking into account high and low speed conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] Figure 1It is a schematic diagram of the composite material embedded vibration reduction structure in Examples 1 and 2 of the present invention when it is installed on the base plate.

[0022] Figure 2 Schematic diagram of the composite material embedded vibration damping structure in Examples 1 and 2 of the present invention.

[0023] Figure 3 Schematic diagram of the external structure of the composite material inlaid vibration damping structure in Examples 1 and 2 of the present invention.

[0024] Figure 4 Schematic diagram of the outer cylinder of the composite material embedded vibration reduction structure in Examples 1 and 2 of the present invention.

[0025] Figure 5 Schematic diagram of the inner cylinder of the composite material embedded vibration reduction structure in Examples 1 and 2 of the present invention.

[0026] Among them, 1. vibration reduction structure; 2. base plate; 3. compressor foot; 4. sleeve; 5. gasket; 6. screw; 11. outer cylinder; 12. inner cylinder; 111. lateral constraint part; 112. bottom support part; 113. matching hole; 114. fitting groove; 115. first matching part; 121. installation groove; 122. anti-slip protrusion; 123. pressure ring part; 124. fitting protrusion; 125. vibration reduction ring; 126. through hole; 127. second matching part. DETAILED DESCRIPTION

[0027] Example 1

[0028] In a typical embodiment of the present invention, Figure 1-Figure 5 As shown, a composite material inlaid vibration damping structure is given.

[0029] The rubber pad in the prior art is made of a single material, and the vibration reduction effect is improved through simple structural design (such as internal hollowing, reducing wall thickness, increasing height, etc.), but these methods often lead to poor lateral support stability, and cannot take into account the vibration reduction requirements under high and low speed conditions, and cannot effectively suppress the vibration of the compressor and the vibration transmitted to the external structure such as the refrigerator. Based on this, this embodiment aims to provide a composite material inlaid vibration reduction structure, which achieves good vibration reduction effects under high and low speed conditions through innovative structural design, while ensuring lateral support stability.

[0030] like Figure 2As shown, the composite material inlaid vibration reduction structure mainly includes an inner cylinder 12 and an outer cylinder 11 that match each other. A stepped hole is axially arranged in the outer cylinder 11, and the stepped hole consists of a mounting hole, a step annular surface and a matching hole 113. The step annular surface is located between the mounting hole and the matching hole 113, and serves as a bearing surface abutting the inner cylinder 12; the inner cylinder 12 is axially arranged with a through hole 126, one end of the inner cylinder 12 can be inserted into the mounting hole of the outer cylinder 11, and the other end is located outside the mounting hole to form a structure matching the compressor foot 3.

[0031] The inner cylinder 12 and the outer cylinder 11 are matched with each other from the circumferential side and axial end face of the inner cylinder 12. The circumferential side of the inner cylinder 12 forms an inlay structure with the interlocking protrusion 124 and the interlocking groove 114. The axial end face of the inner cylinder 12 and the step annular surface in the stepped hole of the outer cylinder 11 form abutment. Figure 1 and Figure 2 As shown, the inner cylinder 12 is provided with an engaging protrusion 124 on the outer circumferential wall of the mounting hole, and the inner circumferential surface of the mounting hole is provided with an engaging groove 114, and the two form an interference fit. The engaging protrusion 124 and the engaging groove 114 are inlaid, and other positions on the circumferential side of the inner cylinder 12 are left with a gap with the mounting hole, which reduces the contact area, but increases the vibration transmission path, and improves the vibration reduction effect under high speed conditions.

[0032] like Figure 2 As shown, the end surface of the inner cylinder 12 located in the mounting hole is provided with a vibration-damping ring 125 protruding from the end surface, and the vibration-damping ring 125 abuts against the step ring surface. Vibration energy is absorbed by the elastic deformation of the vibration-damping ring 125. In this embodiment, Figure 3 As shown, the through holes 126 of the vibration reduction structure 1 are distributed vertically, and the vibration reduction ring 125 can achieve elastic deformation in the vertical direction, thereby reducing the vertical vibration and further improving the vibration reduction effect.

[0033] like Figure 1 As shown, a sleeve 4 is used in conjunction with a screw 6 and a gasket 5 as a fixing component, the screw 6 is used as a fixing part, the matching hole 113 fits the sleeve 4 of the fixing component, and the through hole 126 is sleeved outside the screw 6, ensuring that the vibration reduction structure 1 can be firmly installed between the compressor and the external device.

[0034] Specifically, Figure 4 As shown, the outer cylinder 11 is a cylindrical structure, one end of which is used to fit the external bearing structure as a bottom support portion 112 for vertically supporting vibration reduction, and a stepped hole is formed inside. The matching hole 113 of the stepped hole is used to cooperate with external equipment to achieve axially symmetrical lateral fixation. The side wall of the outer cylinder 11 serves as a lateral constraint portion 111 for constraining the lateral displacement of the inner cylinder 12.

[0035] Through the interference fit between the interlocking protrusion 124 and the interlocking groove 114 and the design of the vibration reduction ring 125, a good vibration reduction effect can be achieved under high and low speed conditions. The outer cylinder 11 limits the radial displacement of the inner cylinder 12, thereby ensuring the lateral support stability. The inner cylinder 12 and the outer cylinder 11 are split and combined structures, and the material selection and stiffness design can be performed separately, which can achieve a good vibration reduction effect without increasing the overall height, adapting to the development trend of compressor height becoming shorter and shorter.

[0036] At present, the vibration reduction structure 1 of a single material is often difficult to meet the requirements of stiffness, damping and other aspects at the same time. The vibration reduction structure 1 of a single material has a fixed characteristic curve and has an optimal vibration reduction condition, while the effect decreases under other conditions. Figure 2 and Figure 3 As shown, the outer cylinder 11 and the inner cylinder 12 in this embodiment are made of different materials, and the rigidity of the outer cylinder 11 is greater than that of the inner cylinder 12 to provide sufficient supporting force to prevent the compressor from generating excessive displacement during operation.

[0037] The traditional vibration reduction structure 1 has large longitudinal stiffness and large longitudinal vibration transmission; short lateral vibration transmission path and large lateral vibration transmission; insufficient lateral support stability and large low-speed jitter. In this embodiment, the vibration reduction structure 1 adopts a low-rigidity inner cylinder 12 to reduce the longitudinal stiffness of the vibration reduction structure 1, reduce longitudinal vibration transmission, and optimize the refrigerator fundamental frequency resonance noise. In addition, the embedded protrusion 124 and the embedded groove 114 are used for inlaying to increase the lateral transmission path, reduce lateral vibration transmission, and optimize the refrigerator fundamental frequency resonance noise. In addition, the outer cylinder 11 with high rigidity is used to constrain the range of movement of the inner cylinder 12, improve the lateral support stability, reduce the low-speed jitter problem, and optimize the resonance radiation noise of structural parts such as pipelines.

[0038] At the same time, the damping of the outer cylinder 11 is smaller than that of the inner cylinder 12, so that the inner cylinder 12 can better absorb and dissipate vibration energy. Through reasonable material selection, an optimal combination of stiffness and damping is achieved, which complements and improves each other, broadens the optimal vibration reduction characteristic speed and temperature range, achieves better vibration reduction and noise reduction effects, and improves the overall performance of the vibration reduction structure 1.

[0039] Single material has the same material properties in all directions, and directional design cannot be performed. For example, if the material stiffness decreases, the material stiffness in all directions decreases, and it is impossible to design a decrease in one direction and an increase in another direction. In this embodiment, the inner tube 12 and the outer tube 11 are made of different materials and use a chimeric structure, and the thickness size ratio of the two materials is adjusted to achieve directional design.

[0040] Stiffness refers to the ability of a material to resist deformation when subjected to force, while damping refers to the characteristics of a material that consumes energy and reduces amplitude during vibration. The outer cylinder 11 has high stiffness and low damping, so that the outer cylinder 11 of the vibration reduction structure 1 has a strong ability to resist deformation when subjected to external force, that is, it is not easy to deform, improves the stability of lateral support, reduces the problem of low-speed jitter, and optimizes the resonance radiation noise of structural parts such as pipelines. The inner cylinder 12 has low stiffness and high damping. Contrary to the outer structure, the inner cylinder 12 of the vibration reduction structure 1 has a weak ability to resist deformation when subjected to external force, that is, it is more likely to deform, reduces longitudinal vibration transmission, and optimizes the fundamental frequency resonance noise of the external structure. However, the damping is large, which can consume more energy during the vibration process, thereby quickly reducing the amplitude and helping to quickly calm the vibration. The vibration reduction structure 1 can provide sufficient support and deformation resistance for the outside, while absorbing and dissipating vibration energy through large damping inside, thereby achieving a balance between the overall performance of the structure and local vibration control, taking into account high and low speed conditions.

[0041] In other optional implementations, the inner tube 12 and the outer tube 11 may also be combined in other ways, and the two materials with different properties complement each other to expand the temperature and frequency of the best vibration reduction effect.

[0042] like Figure 2 , Figure 4 and Figure 5 As shown, the engaging protrusions 124 are continuously distributed along the circumference of the inner cylinder 12 to form annular protrusions, and the engaging grooves 114 are continuously distributed along the circumference of the mounting hole of the outer cylinder 11 to form annular grooves, and the engaging protrusions 124 are embedded in the engaging grooves 114 one by one. The close fit between the inner cylinder 12 and the outer cylinder 11 is ensured, while the contact area is reduced and the vibration transmission path is increased.

[0043] The inner cylinder 12 is a cylindrical structure, one end of which can be inserted into the mounting hole of the outer cylinder 11. The segment of the inner cylinder 12 that is inserted into the mounting hole serves as the first matching portion 115, and a plurality of interlocking protrusions 124 are sequentially arranged along the axial direction of the through hole 126; the inner wall of the mounting hole forms a second matching portion 127, and a plurality of interlocking grooves 114 are sequentially arranged along the axial direction of the mounting hole. The non-interlocking protrusion 124 position of the first matching portion 115 and the non-interlocking groove 114 position of the second matching portion 127 are clearance-matched, and the interlocking groove 114 and the interlocking protrusion 124 are interference-fitted, which prevents the inner cylinder 12 and the outer cylinder 11 from separating and falling off, and at the same time reduces the contact area of ​​the inner cylinder 12 and the outer cylinder 11 for lateral and longitudinal vibration transmission, which ensures tightness and facilitates assembly.

[0044] like Figure 2As shown, the vibration damping ring 125 is coaxially distributed with the through hole 126, and multiple vibration damping rings 125 are sequentially distributed along the radial direction of the through hole 126 to increase the vibration damping effect. At the same time, the vibration damping ring 125, the interlocking protrusion 124 and the interlocking groove 114 are all semicircular in cross section along the axial direction of the through hole 126, which reduces the contact area, increases the vibration transmission path, and helps to better absorb and disperse the vibration energy. Finally, the inner tube 12 and the outer tube 11 are only in contact through the multiple vibration damping rings 125 at the bottom and the multiple interlocking protrusions 124 and the interlocking grooves 114 on the side.

[0045] like Figure 2 As shown, the mounting groove 121 on the inner cylinder 12 is an annular groove sleeved outside the through hole 126, one side of the annular groove is an annular pressure-bearing ring portion 123, and the other side forms an anti-slip protrusion 122. The pressure-bearing ring portion 123 is used to bear the weight and vibration of the compressor body, and the anti-slip protrusion 122 prevents the compressor foot 3 and the vibration reduction structure 1 from being separated during operation.

[0046] The through hole 126, the matching hole 113 and the mounting hole are coaxially arranged, such as Figure 1 As shown, the diameter of the matching hole 113 is smaller than the diameter of the through hole 126. When the sleeve 4 is used in conjunction with the screw 6 and the gasket 5 as a fixing component, the sleeve 4 and the matching hole 113 of the vibration damping structure 1 have an interference fit, and the sleeve 4 and the through hole 126 of the inner cylinder 12 have a clearance fit. The lateral vibration transmission path of the compressor foot 3 is greatly increased, and the lateral vibration transmitted through the sleeve 4 is reduced.

[0047] After assembly, the pressure ring portion 123 is higher than the upper edge of the lateral constraint portion 111, and the compressor foot 3 can cooperate with the installation groove 121. The compressor foot 3 does not directly contact the outer cylinder 11. During normal operation, the vibration is transmitted to the outer cylinder 11 through the inner cylinder 12 and then to the refrigerator bottom plate 2. Under extreme vibration conditions such as transportation, the inner cylinder 12 has low rigidity and large deformation, and the compressor foot 3 contacts the lateral constraint portion 111 of the outer cylinder 11. Due to the large rigidity of the outer cylinder 11, it can achieve enhanced support to prevent the risk of component deformation caused by excessive displacement of the compressor. The stability and reliability of the vibration reduction structure 1 are improved to ensure the normal operation of the compressor. The external support is strong, which protects the compressor from other risks caused by excessive displacement under conditions such as transportation, and solves the problem of insufficient support performance of the single-material vibration reduction structure 1 after the rigidity decreases.

[0048] Example 2

[0049] In another typical embodiment of the present invention, Figure 1-Figure 5 As shown, a compressor with a composite material inlaid vibration damping structure is provided, using the composite material inlaid vibration damping structure as in Example 1.

[0050] The bottom surface of the outer cylinder 11 of the composite material inlaid vibration reduction structure is the bottom support part 112, and the bottom support part 112 can fit the bottom plate 2 of the external structure. The sleeve 4 is used in conjunction with the screw 6 and the gasket 5 as a fixing component. An opening is provided on the compressor foot 3, and the opening is sleeved outside the mounting groove 121 and abuts against the inner cylinder 12. The sleeve 4 passes through the through hole 126 and the matching hole 113 and abuts against the bottom plate 2. One end of the screw 6 abuts against the sleeve 4 through the gasket 5, and the other end passes through the sleeve 4 and is connected to the bottom plate 2, so that the inner cylinder 12 and the outer cylinder 11 are both sleeved outside the screw 6 and the sleeve 4.

[0051] The compressor foot 3 passes through the anti-slip portion of the vibration reduction structure 1, so that the opening is coaxial with the mounting groove 121, and is pressed on the pressure ring portion 123. The bottom support portion 112 of the vibration reduction structure 1 contacts the refrigerator bottom plate 2, and the screw 6 passes through the gasket 5 and the sleeve 4 and is fixed on the bottom plate 2. The bottom plate 2 can be the bottom plate 2 of equipment such as a refrigerator and a freezer.

[0052] The vibration reduction structure 1 is formed by combining the inner cylinder 12 and the outer cylinder 11 as the vibration reduction rubber pad of the compressor. The outer cylinder 11 limits the radial displacement of the inner cylinder 12, reduces the low-speed amplitude and vibration of the compressor, and the bottom of the inner cylinder 12 and the outer cylinder 11 are in contact through the vibration reduction ring 125, and the side is in contact through the interlocking protrusion 124 and the interlocking groove 114, which reduces the contact area but increases the length of the vibration transmission path, reduces the lateral vibration transmission, optimizes the external fundamental frequency resonance noise, and improves the vibration reduction effect under high-speed working conditions, thereby taking into account the vibration of the compressor and the vibration control transmitted to the outside. The split inner cylinder 12 and outer cylinder 11 structure are adopted, and the double-structure inlay combination design is designed. The directional design is achieved by adjusting the thickness size ratio of the two structures, which is suitable for a variety of equipment.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A composite material inlaid vibration damping structure, characterized in that: It includes an outer cylinder with a stepped hole and an inner cylinder with a through hole. The stepped hole is composed of a mounting hole, a step annular surface and a matching hole. One end of the inner cylinder extends into the mounting hole. A mounting groove is provided on the inner cylinder outside the mounting hole. An engaging protrusion is provided on the outer circumferential wall of the inner cylinder located at the mounting hole. An engaging groove is provided on the inner circumferential surface of the mounting hole. The engaging protrusion and the engaging groove form an interference fit. A vibration-damping ring protruding from the end surface is provided on the end surface of the inner cylinder located in the mounting hole. The vibration-damping ring abuts against the step annular surface. The matching hole fits the external fixing component, and the through hole is sleeved outside the fixing component.

2. The composite material inlaid vibration damping structure according to claim 1, characterized in that: The outer cylinder and the inner cylinder are made of different materials, the rigidity of the outer cylinder is greater than the rigidity of the inner cylinder, and the damping of the outer cylinder is less than the damping of the inner cylinder.

3. The composite material inlaid vibration damping structure according to claim 1, characterized in that: The engaging protrusions are continuously distributed along the circumferential direction of the inner cylinder to form an annular protrusion, and the engaging grooves are continuously distributed along the circumferential direction of the mounting hole of the outer cylinder to form an annular groove. The engaging protrusions are embedded in the engaging grooves in a one-to-one correspondence.

4. The composite material inlaid vibration damping structure according to claim 3, characterized in that: The segment of the inner tube protruding into the mounting hole serves as a first matching portion, and the first matching portion has a plurality of interlocking protrusions arranged in sequence along the axial direction of the through hole. The inner wall of the mounting hole forms a second matching portion, and the second matching portion has a plurality of interlocking grooves arranged in sequence along the axial direction of the mounting hole. The non-interlocking protrusion position of the first matching portion is clearance-matched with the non-interlocking groove position of the second matching portion.

5. The composite material inlaid vibration damping structure according to claim 1, characterized in that: The vibration damping ring is coaxially distributed with the through hole, and a plurality of vibration damping rings are sequentially distributed along the radial direction of the through hole.

6. The composite material inlaid vibration damping structure according to claim 5, characterized in that: The vibration-damping ring, the engaging protrusion and the engaging groove are all semicircular in cross section along the axial direction of the through hole.

7. The composite material inlaid vibration damping structure according to claim 1, characterized in that: The mounting groove on the inner cylinder is an annular groove sleeved outside the through hole, one side of the annular groove is an annular pressure-bearing ring portion, and the other side forms an anti-slip protrusion.

8. The composite material inlaid vibration damping structure according to claim 7, characterized in that: The through hole, the matching hole and the mounting hole are coaxially distributed.

9. A compressor with a composite material embedded vibration reduction structure, characterized in that: A vibration damping structure is inlaid with the composite material as claimed in any one of claims 1 to 8.

10. The compressor with composite material embedded vibration damping structure according to claim 9, characterized in that: An opening is provided on the compressor foot, the opening is sleeved outside the mounting groove and abuts against the inner tube, the sleeve passes through the through hole and the matching hole and abuts against the base plate, one end of the screw abuts against the sleeve through a gasket, and the other end passes through the sleeve and is connected to the base plate, so that the inner tube and the outer tube are both sleeved outside the screw and the sleeve.

Images