Vibration and noise reduction device for compressor

Abstract

The invention provides a vibration and noise reduction device for a compressor. The vibration and noise reduction device comprises a base, a mounting plate, a buffer spring, a passive buffer piece and a sound absorption cover. The mounting plate is arranged above the base, a buffer spring is arranged between the mounting plate and the base, and the two ends of the buffer spring are detachably connected with the base and the mounting plate respectively; the passive buffering piece is arranged between the base and the mounting plate and located in the buffering spring, a buffering air cavity is formed in the passive buffering piece, and an airflow buffering hole is formed in the bottom of the passive buffering piece and communicates with the buffering air cavity; the sound absorption cover is arranged on the mounting plate, located outside the compressor and used for absorbing vibration noise of the compressor. Air flow of the passive buffer part is used for buffering entering and exhausting, the vibration amplitude of the compressor is reduced, meanwhile, noise generated by the compressor is absorbed in cooperation with the sound absorption cover, the good vibration and noise reduction effect can be achieved, and the beneficial effects of being simple in structure and good in effect are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration reduction and noise reduction devices, and in particular to a vibration reduction and noise reduction device for a compressor. Background Art

[0002] A compressor is a mechanical device that converts mechanical energy into gas pressure energy. Its core function is to draw in low-pressure gas, perform work on it through specific means (such as reducing its volume or changing its momentum), significantly increasing its pressure and temperature, and ultimately expelling high-pressure gas. This pressurization process is the foundation for gas storage, transportation, and various operations utilizing gas energy.

[0003] Compressors play a crucial role in modern industrial production and daily life. Their applications are vast: in refrigeration and air-conditioning systems, compressors are the heart of the system, compressing the refrigerant and circulating it between the evaporator and condenser, absorbing and releasing heat to achieve cooling, heating, or dehumidification. They are widely used in household refrigerators, air conditioners, automotive air conditioners, commercial freezers, industrial chillers, and more. In industrial production, compressors power various pneumatic tools, pneumatic control systems, and instrumentation; they are used for process gas compression, gas transportation, and gas separation in the petrochemical industry; and they provide the air source required for painting, spraying, and material transportation.

[0004] The compressor will generate vibration and noise during operation. In order to reduce the vibration and noise generated by the compressor, a vibration reduction and noise reduction device is usually installed at the bottom of the compressor. For example, the patent publication number is CN213747069U, and the patent name is a utility model patent for a compressor vibration reduction and noise reduction fixing device and an air conditioner. The patent includes a base, an inner fixing sleeve, a vibration reduction material layer, and an outer fixing sleeve that surround the outside of the compressor in sequence. At least three spring pendulum blocks are provided between the bottom of the inner fixing sleeve and the base, and the compressor is fixed to the bottom of the inner fixing sleeve. This utility model fixes the compressor on a base with a dual vibration reduction effect, thereby reducing the impact of the vibration of the compressor during transportation and operation on the support parts and pipelines, while reducing the effect of the outward transmission of the compressor vibration noise, making the operating conditions of the air conditioner outdoor unit more stable and extending the life of the pipeline.

[0005] However, the compressor vibration reduction and noise reduction fixing device in the prior art has certain defects. During use, after long-term use of the compressor, wear occurs between the inner fixing sleeve and the outer fixing sleeve. Under the vibration of the compressor, the inner fixing sleeve and the outer fixing sleeve collide with each other due to vibration and generate noise.

[0006] In view of this, this application is hereby filed. Summary of the Invention

[0007] The object of the present invention is to provide a vibration and noise reduction device for a compressor to solve the problems raised in the above background technology.

[0008] In order to solve the above technical problems, the technical solutions of the present invention are as follows: An embodiment of the present invention provides a vibration and noise reduction device for a compressor, comprising a base, a mounting plate, a buffer spring, a passive buffer member, and a sound absorbing cover; The mounting plate is arranged above the base, the buffer spring is arranged between the mounting plate and the base, and both ends of the buffer spring are detachably connected to the base and the mounting plate respectively; The passive buffer is arranged between the base and the mounting plate, and the passive buffer is located inside the buffer spring. A buffer air cavity is provided inside the passive buffer, and the internal space of the buffer air cavity is adjustable. An airflow buffer hole is provided at the bottom of the passive buffer, and the airflow buffer hole is communicated with the buffer air cavity. The airflow buffer hole has a first motion state and a second motion state: When the air flow buffer hole is in the first motion state, the vibration direction of the compressor is toward the passive buffer member, the buffer air cavity is compressed, and the gas in the buffer air cavity is discharged slowly from the air flow buffer hole, thereby reducing the downward vibration amplitude of the compressor; When the air flow buffer hole is in the second motion state, the compressor vibrates away from the passive buffer member, the buffer air cavity is stretched, and the gas outside the buffer air cavity is slowly sucked in from the external air, thereby reducing the upward movement of the compressor; The sound absorbing cover is detachably mounted on the mounting plate and is located outside the compressor. The sound absorbing cover is used to absorb the vibration noise of the compressor.

[0009] Furthermore, the upper surface of the base and the bottom surface of the mounting plate are both provided with mounting grooves matching the buffer spring, and the two ends of the buffer spring are respectively located in the mounting grooves, a sealing cover is provided at the opening of the mounting groove, and fastening screws for fastening the sealing cover are provided on the side walls of the base and the mounting plate, and the sealing cover is used to fix and position the buffer spring.

[0010] Furthermore, the passive buffer component includes a buffer seat, a connecting seat and an elastic corrugated airbag; The buffer seat is fixedly arranged on the upper surface of the base, and the airflow buffer hole is arranged on the side wall of the buffer seat, and the airflow buffer hole is communicated with the buffer air cavity; The connecting seat is fixedly arranged on the bottom surface of the mounting plate; The elastic corrugated airbag is fixedly arranged between the buffer seat and the connecting seat. The elastic corrugated airbag has the buffer air cavity, and the space of the buffer air cavity is adjustable.

[0011] Furthermore, a plurality of the airflow buffer holes are provided, and the plurality of the airflow buffer holes are evenly distributed on the side circumferential wall of the buffer seat, and a protective mesh cover is provided outside the airflow buffer hole.

[0012] Furthermore, the buffer air cavity is in a truncated cone shape, and the diameter of the upper bottom surface of the buffer air cavity is larger than the diameter of the lower bottom surface.

[0013] Furthermore, a docking groove is provided at the edge of the upper surface of the mounting plate, and the sound absorbing cover is mounted in the docking groove. A locking piece is embedded and installed on the side wall of the docking groove, and a mounting hole matching the locking piece is provided on the side wall of the docking groove. Two locking pieces are symmetrically arranged, and the locking pieces are used to lock and fix the sound absorbing cover.

[0014] Furthermore, the positioning member includes a positioning column, a driving plate and a limiting ring; The locking post is movably arranged in the mounting hole, and a locking hole matching the locking post is provided through the inner wall of the bottom of the sound absorbing cover; The driving piece is fixedly arranged at the middle part of the locking column, and a locking spring is arranged on the bottom surface of the driving piece and the mounting hole, and the locking spring is sleeved on the locking column; The limiting ring is sleeved on the outer end of the locking column, and the limiting ring is fixedly arranged on the end edge of the mounting hole. The limiting ring restricts the locking column from popping out of the mounting hole by abutting against the driving sheet.

[0015] Furthermore, the outer end of the locking post is exposed outside the locking hole, and the outer end of the locking post is configured to be spherical.

[0016] Furthermore, the sound-absorbing cover includes a seat, a cover body and a sound-absorbing inner cushion layer; The locking seat is sleeved on the docking groove, and the locking hole is provided on the side wall of the locking seat, and the locking seat is fixed by being engaged with the locking piece; The cover body and the locking seat are integrally formed, and a plurality of heat dissipation windows are evenly arranged on the cover body, and the heat dissipation windows are used for dissipating heat from the compressor; The sound-absorbing inner cushion layer is fixedly arranged on the inner wall of the cover body, and the sound-absorbing inner cushion layer is provided with honeycomb-shaped sound-absorbing holes.

[0017] Furthermore, the locking seat is an annular structure, the inner edge of the bottom of the locking seat has a chamfered structure, a sound insulation pad is provided between the locking seat and the docking groove, and the sound insulation pad is fixedly provided on the inner wall of the docking groove.

[0018] The above solution of the present invention includes at least the following beneficial effects: The present invention utilizes a passive buffer to buffer and reduce the vibration amplitude of the compressor. When the compressor generates vibration during operation, the passive buffer changes the internal space size of its buffer air cavity by compression or stretching. At the same time, during the process of the change of the internal space of the buffer air cavity, the air flow speed passing through the air flow buffer hole is slowed down, thereby being able to slow down the vibration amplitude of the compressor and achieve a good vibration reduction effect.

[0019] Furthermore, the sound absorbing cover is detachably mounted on the mounting plate, and can be removed during compressor maintenance, making it easier to perform compressor maintenance. Furthermore, the sound absorbing cover can absorb the noise generated by the compressor, effectively reducing the noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a vibration and noise reduction device for a compressor provided by the present invention; Figure 2 A schematic diagram of a compressor installation structure of a vibration and noise reduction device for a compressor provided by the present invention; Figure 3 A schematic diagram of the installation structure of a sound-absorbing cover of a vibration and noise reduction device for a compressor provided by the present invention; Figure 4 A schematic diagram of the structure of a mounting plate for a vibration and noise reduction device for a compressor provided by the present invention; Figure 5 A schematic structural diagram of a passive buffer member of a vibration and noise reduction device for a compressor provided by the present invention; Figure 6 This is a schematic cross-sectional structure diagram of a passive buffer component of a vibration and noise reduction device for a compressor provided by the present invention.

[0021] Description of reference numerals: 1. Base; 2. Mounting plate; 3. Buffer spring; 4. Passive buffer component; 5. Sound-absorbing cover; 6. Buffer air cavity; 7. Airflow buffer hole; 8. Mounting slot; 9. Sealing cover; 10. Fastening screw; 11. Buffer seat; 12. Connecting seat; 13. Elastic corrugated airbag; 14. Docking slot; 15. Mounting hole; 16. Positioning column; 17. Drive plate; 18. Limiting ring; 19. Positioning seat; 20. Cover body; 21. Sound-absorbing inner pad; 22. Heat dissipation window; 23. Sound insulation pad; 24. Compressor; 25. Positioning hole; 26. Positioning spring; 27. Protective mesh cover. DETAILED DESCRIPTION

[0022] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0023] like Figures 1 to 6 As shown, an embodiment of the present invention provides a vibration and noise reduction device for a compressor 24, including a base 1, a mounting plate 2, a buffer spring 3, a passive buffer member 4 and a sound absorbing cover 5.

[0024] Specifically, the mounting plate 2 is arranged above the base 1 , the buffer spring 3 is provided between the mounting plate 2 and the base 1 , and both ends of the buffer spring 3 are detachably connected to the base 1 and the mounting plate 2 , respectively.

[0025] The passive buffer 4 is arranged between the base 1 and the mounting plate 2, and the passive buffer 4 is located inside the buffer spring 3. The passive buffer 4 has a buffer air cavity 6 inside, and the internal space of the buffer air cavity 6 is adjustable. The bottom of the passive buffer 4 is provided with an airflow buffer hole 7, and the airflow buffer hole 7 is connected to the buffer air cavity 6. The airflow buffer hole 7 has a first motion state and a second motion state: When the airflow buffer hole 7 is in the first movement state, the vibration direction of the compressor 24 is toward the side of the passive buffer 4, the buffer air cavity 6 is compressed, and the gas in the buffer air cavity 6 is discharged slowly through the airflow buffer hole 7 to reduce the downward vibration amplitude of the compressor 24.

[0026] When the air flow buffer hole 7 is in the second movement state, the compressor 24 vibrates toward the side away from the passive buffer 4, the buffer air cavity 6 is stretched, and the gas outside the buffer air cavity 6 is slowly sucked in from the external air to reduce the upward movement amplitude of the compressor 24.

[0027] The sound absorbing cover 5 is detachably mounted on the mounting plate 2 , and is located outside the compressor 24 . The sound absorbing cover 5 is used to absorb vibration noise of the compressor 24 .

[0028] In this embodiment, the compressor 24 is fixedly mounted on the mounting plate 2 via a vibration-damping pad. After the compressor 24 is installed, the sound-absorbing cover 5 is installed on the side wall of the mounting plate 2 to complete the installation of the compressor 24.

[0029] When the compressor 24 is working and generates vibration and noise, the sound-absorbing cover 5 absorbs the noise generated by the compressor 24, thereby reducing the decibel level of the noise. At the same time, the passive buffer 4 buffers and reduces the vibration of the compressor 24, specifically: When the vibration direction of the compressor 24 is downward, the mounting plate 2 compresses the buffer spring 3 and the passive buffer 4, and the buffer spring 3 has a first buffering effect on the downward vibration of the compressor 24. At the same time, when the mounting plate 2 compresses the passive buffer 4, the buffer space inside the passive buffer 4 is compressed, and the gas in the buffer air cavity 6 is compressed at the same time and discharged from the airflow buffer hole 7. Since the aperture of the airflow buffer hole 7 is limited, when the gas is discharged, the gas discharge volume is less than the compression volume of the buffer air cavity 6, and the buffer chamber is in a positive pressure state. The passive buffer 4 provides an upward elastic force to the mounting plate 2, which can buffer and reduce the vibration amplitude of the compressor 24, thereby achieving a vibration reduction effect.

[0030] When the vibration of the compressor 24 reaches the bottom position, the vibration direction of the compressor 24 changes from downward to upward. At this time, the buffer air cavity 6 increases due to being stretched. Since the air intake of the airflow buffer hole 7 is less than the increase in the internal space of the buffer air cavity 6, the buffer air cavity 6 is in a negative pressure state, and the passive buffer 4 provides a downward pulling force to the mounting plate 2. This pulling force can reduce the upward vibration amplitude of the compressor 24, thereby reducing the vibration amplitude of the compressor 24. Considering the reciprocating up and down vibration of the compressor 24, on the one hand, the buffer spring 3 can reduce the vibration amplitude of the compressor 24. On the other hand, the passive buffer 4 applies a force opposite to the vibration direction to the mounting plate 2 through the change of its internal air pressure, which can reduce the vibration amplitude of the compressor 24, thereby achieving a good vibration reduction effect.

[0031] In a specific embodiment, the upper surface of the base 1 and the bottom surface of the mounting plate 2 are both provided with mounting grooves 8 that match the buffer spring 3, and the two ends of the buffer spring 3 are respectively located in the mounting grooves 8, a sealing cover 9 is provided at the opening of the docking groove 14, and fastening screws 10 for fastening the sealing cover 9 are provided on the side walls of the base 1 and the mounting plate 2, and the sealing cover 9 is used to fix and position the buffer spring 3.

[0032] When assembling the vibration and noise reduction device, first, fix the bottom of the passive buffer 4 to the upper surface of the base 1. Then, place the bottom of the buffer spring 3 into the mounting groove 8, and use the sealing cover 9 to fix the end of the buffer spring 3. Subsequently, fix the top of the passive buffer 4 to the bottom surface of the mounting plate 2, so that the two ends of the passive buffer 4 are respectively fixedly connected to the base 1 and the mounting plate 2. Finally, move the upper end of the buffer spring 3 into the mounting groove 8 on the bottom surface of the mounting plate 2, and use the sealing cover 9 to fix the end of the buffer spring 3 in the mounting groove 8 to complete the installation of the passive buffer 4 and the buffer spring 3. The buffer spring 3 adopts a detachable installation method to facilitate maintenance of the passive buffer 4.

[0033] Furthermore, the passive buffer component 4 includes a buffer seat 11 , a connecting seat 12 and an elastic corrugated airbag 13 .

[0034] Specifically, the buffer seat 11 is fixedly arranged on the upper surface of the base 1 , and the airflow buffer hole 7 is arranged on the side wall of the buffer seat 11 , and the airflow buffer hole 7 is communicated with the buffer air cavity 6 .

[0035] The connecting seat 12 is fixedly arranged on the bottom surface of the mounting plate 2 .

[0036] The elastic corrugated airbag 13 is fixedly disposed between the buffer seat 11 and the connecting seat 12 . The elastic corrugated airbag 13 has the buffer air cavity 6 , and the space of the buffer air cavity 6 is adjustable.

[0037] In this embodiment, a plurality of the airflow buffer holes 7 are provided, and the plurality of the airflow buffer holes 7 are evenly distributed on the side circumferential wall of the buffer seat 11 , and a protective mesh cover 27 is provided outside the airflow buffer hole 7 .

[0038] During the vibration of compressor 24, when the vibration direction of compressor 24 is downward, buffer air cavity 6 is compressed, and the compression amount of the internal space of buffer air cavity 6 is greater than the gas discharge amount of air flow buffer hole 7, so that the buffer air cavity 6 is in a positive pressure state. The connecting seat 12 provides an upward elastic force to the mounting plate 2. This elastic force is opposite to the vibration direction of compressor 24 and can reduce the vibration amplitude of compressor 24. When the vibration direction of compressor 24 is upward, buffer air cavity 6 is stretched. The extension amount of the internal space of buffer air cavity 6 is greater than the gas entry amount of air flow buffer hole 7, so that the buffer air cavity 6 is in a negative pressure state. The connecting seat 12 provides a downward pulling force to the mounting plate 2. This pulling force is opposite to the vibration direction of compressor 24 and can reduce the vibration amplitude of compressor 24. The combination of the two can effectively reduce the vibration amplitude of compressor 24, thereby achieving a good vibration reduction effect.

[0039] In a specific embodiment, the buffer air cavity 6 is in the shape of a truncated cone, and the diameter of the upper base surface of the buffer air cavity 6 is larger than the diameter of the lower base surface. The buffer air cavity 6 is in the shape of an upright truncated cone. When the connecting seat 12 is compressed, the amount of compression of the internal space of the buffer air cavity 6 gradually increases when the connecting seat 12 moves downward by a certain distance. When the connecting seat 12 is stretched, the amount of stretching of the internal space of the buffer air cavity 6 gradually decreases when the connecting seat 12 moves upward by a certain distance. This can effectively reduce the vibration amplitude of the compressor 24 and make the compressor 24 tend to a stable state. Specifically: When the elastic bellows 13 is compressed, the buffer spring 3 provides the primary buffering function. When the elastic bellows 13 is compressed to its maximum position, the vibration direction of the compressor 24 changes. At this point, the vibration direction of the compressor 24 is upward, the elastic bellows 13 is stretched, and the internal space of the buffer chamber 6 gradually decreases, while the connector 12 moves upward the same distance. When the vibration direction of the compressor 24 changes from downward to upward, the buffer spring 3 applies an upward force to the mounting plate 2. At this point, the buffer chamber 6 is stretched to its maximum, and the difference between the stretch and the airflow through the airflow buffer hole 7 is at its maximum, resulting in a maximum negative pressure within the buffer chamber 6. The downward tension exerted by the elastic bellows 13 on the mounting plate 2 reaches its maximum value, effectively reducing the vibration amplitude of the compressor 24. As the upward vibration amplitude of the compressor 24 gradually decreases, the difference between the stretch and the airflow through the airflow buffer hole 7 decreases, causing the compressor 24 to stabilize, effectively enhancing the vibration reduction effect of the compressor 24.

[0040] Furthermore, a docking groove 14 is provided at the edge of the upper surface of the mounting plate 2, and the sound absorbing cover 5 is sleeved in the docking groove 14. A locking piece is embedded and installed on the side wall of the docking groove 14, and a mounting hole 15 matching the locking piece is provided on the side wall of the docking groove 14. Two locking pieces are symmetrically arranged, and the locking pieces are used to lock and fix the sound absorbing cover 5.

[0041] In this embodiment, the retaining member includes a retaining post 16, a driving plate 17, and a limiting ring 18. The retaining post 16 is movably disposed within the mounting hole 15, and a retaining hole 25 matching the retaining post 16 is formed through the inner wall of the bottom of the sound absorbing cover 5. The outer end of the retaining post 16 is exposed outside the retaining hole 25 and is spherical.

[0042] The driving piece 17 is fixedly disposed at the middle of the locking column 16 . A locking spring 26 is disposed on the bottom surface of the driving piece 17 and the mounting hole 15 , and the locking spring 26 is sleeved on the locking column 16 .

[0043] The limiting ring 18 is sleeved on the outer end of the locking column 16 and is fixedly arranged on the end edge of the mounting hole 15 . The limiting ring 18 restricts the locking column 16 from popping out of the mounting hole 15 by abutting against the driving plate 17 .

[0044] To install the sound hood 5, align it with the docking slot 14 and press downward. Driven by the pressure of the hood 5, the hood 5 pushes the retaining post 16 into the mounting hole 15. The hood 5 is then rotated. During this rotation, the retaining post 16 engages the retaining hole 25 on the hood 5. The retaining post 16 is then inserted into the retaining hole 25 under the elastic force of the retaining spring 26. The retaining post 16 restricts the rotation and vertical movement of the sound hood 5, enabling quick installation and securement of the hood 5.

[0045] The outer end of the locking post 16 is spherical, which can reduce the friction between the locking post 16 and the sound absorbing cover 5, thus providing a certain degree of protection. In addition, the spherical structure of the outer end of the locking post 16 can guide the locking post 16 into the locking hole 25, thereby achieving rapid installation and fixation between the sound absorbing cover 5 and the mounting plate 2.

[0046] It should be noted that the locking hole 25 is provided through-hole to facilitate the removal of the sound absorbing cover 5. When the sound absorbing cover 5 needs to be removed, the locking post 16 can be pushed away from the locking hole 25 with a rod to release the locking post 16 from the sound absorbing cover 5. At this time, the sound absorbing cover 5 can be directly pulled out from the mounting plate 2.

[0047] Furthermore, the sound-absorbing cover 5 includes a retaining seat 19 , a cover body 20 and a sound-absorbing inner padding layer 21 .

[0048] The locking seat 19 is sleeved on the docking groove 14 , and the locking hole 25 is provided on the side wall of the locking seat 19 . The locking seat 19 is fixed by being engaged with the locking member.

[0049] The cover body 20 and the locking seat 19 are integrally formed. A plurality of heat dissipation windows 22 are evenly arranged on the cover body 20 . The heat dissipation windows 22 are used for dissipating heat from the compressor 24 .

[0050] The sound-absorbing inner pad layer 21 is fixedly arranged on the inner wall of the cover body 20 , and the sound-absorbing inner pad layer 21 is provided with honeycomb-shaped sound-absorbing holes.

[0051] In this embodiment, the sound-absorbing inner cushion layer 21 may be made of high-density open-cell foam, the cross-section of the sound-absorbing holes gradually decreases from the outside to the inside, and adjacent sound-absorbing holes are in a connected state.

[0052] Pore size is a key parameter in determining the performance of porous sound-absorbing materials and perforated plate structures. It directly influences the efficiency of converting sound energy into heat and the frequency range of effective sound absorption. When sound waves encounter small pores, air particles are forced to vibrate within the narrow channel. The smaller the pore size, the greater the contact area between the air particles and the pore walls, and the more intense the viscous friction (viscous losses) between the air particles and between the particles and the pore walls. This intense friction efficiently converts the mechanical (kinetic) energy of the sound waves into heat and dissipates it. Therefore, small pore sizes (typically in the submillimeter range, such as 0.1mm to 1mm) have a significant sound absorption effect on mid- and high-frequency sounds (usually above 500Hz).

[0053] For low-frequency absorption (typically between 125Hz and 500Hz), a larger aperture (typically a few to a dozen millimeters) combined with sufficient material thickness or a backing cavity is more effective. Large apertures inherently generate less viscous friction losses, resulting in lower high-frequency sound absorption efficiency. However, large apertures offer lower flow resistance, allowing sound waves to more easily penetrate the material surface, penetrate deep into the interior, or reach the backing cavity. In deep cavities or thick materials, sound waves travel long distances and resonate at a specific frequency (determined by the cavity depth). At this resonant frequency, the vibration velocity of air particles at the aperture reaches its maximum. At this resonant frequency, even with a relatively large aperture, frictional losses between the particles and the aperture wall increase significantly (especially at the aperture edges), resulting in a strong sound absorption peak at this specific low frequency.

[0054] The sound-absorbing holes adopt a honeycomb structure with a gradually decreasing cross-section, which can fully absorb high, medium and low frequency noise, greatly reducing the spread of noise and thus achieving a good noise reduction effect.

[0055] In one embodiment, the retaining seat 19 is annular, with a chamfered inner edge at its bottom. A sound insulation pad 23 is positioned between the retaining seat 19 and the docking slot 14, and is fixedly mounted on the inner wall of the docking slot 14. When installing the sound hood 5, the retaining seat 19 is inserted into the docking slot 14 and rotated, thereby securing and installing the sound hood 5 in conjunction with the retaining posts 16. Furthermore, the provision of the sound insulation pad 23 reduces the gap between the retaining seat 19 and the inner wall of the docking slot 14, thereby reducing noise caused by vibration and collision between the two.

[0056] Different from the prior art, the present invention has at least the following beneficial effects: The present invention utilizes a passive buffer to buffer and reduce the vibration amplitude of the compressor. When the compressor generates vibration during operation, the passive buffer changes the internal space size of its buffer air cavity by compression or stretching. At the same time, during the process of the change of the internal space of the buffer air cavity, the air flow speed passing through the air flow buffer hole is slowed down, thereby being able to slow down the vibration amplitude of the compressor and achieve a good vibration reduction effect.

[0057] Furthermore, the sound absorbing cover is detachably mounted on the mounting plate, and can be removed during compressor maintenance, making it easier to perform compressor maintenance. Furthermore, the sound absorbing cover can absorb the noise generated by the compressor, effectively reducing the noise.

[0058] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A vibration and noise reduction device for a compressor, characterized in that: It includes a base (1), a mounting plate (2), a buffer spring (3), a passive buffer (4) and a sound-absorbing cover (5); The mounting plate (2) is arranged above the base (1), the buffer spring (3) is arranged between the mounting plate (2) and the base (1), and the two ends of the buffer spring (3) are detachably connected to the base (1) and the mounting plate (2) respectively; The passive buffer (4) is arranged between the base (1) and the mounting plate (2), and the passive buffer (4) is located inside the buffer spring (3). A buffer air cavity (6) is provided inside the passive buffer (4), and the internal space of the buffer air cavity (6) is adjustable. An airflow buffer hole (7) is provided at the bottom of the passive buffer (4), and the airflow buffer hole (7) is communicated with the buffer air cavity (6). The airflow buffer hole (7) has a first motion state and a second motion state: When the air flow buffer hole (7) is in the first motion state, the vibration direction of the compressor is toward the side of the passive buffer member (4), the buffer air cavity (6) is compressed, and the gas in the buffer air cavity (6) is discharged slowly from the air flow buffer hole (7), thereby reducing the downward vibration amplitude of the compressor; When the air flow buffer hole (7) is in the second motion state, the compressor vibrates toward the side away from the passive buffer member (4), the buffer air cavity (6) is stretched, and the gas outside the buffer air cavity (6) is slowly sucked in from the external gas, thereby reducing the upward movement of the compressor; The sound absorbing cover (5) is detachably arranged on the mounting plate (2), and the sound absorbing cover (5) is located outside the compressor. The sound absorbing cover (5) is used to absorb the vibration noise of the compressor.

2. The vibration and noise reduction device for a compressor according to claim 1, characterized in that: The upper surface of the base (1) and the bottom surface of the mounting plate (2) are both provided with docking grooves (14) matching the buffer spring (3), and the two ends of the buffer spring (3) are respectively located in the docking grooves (14), a sealing cover (9) is provided at the opening of the docking groove (14), and fastening screws (10) for fastening the sealing cover (9) are provided on the side walls of the base (1) and the mounting plate (2), and the sealing cover (9) is used to fix and position the buffer spring (3).

3. The vibration and noise reduction device for a compressor according to claim 1, characterized in that: The passive buffer (4) comprises a buffer seat (11), a connecting seat (12), and an elastic corrugated airbag (13); The buffer seat (11) is fixedly arranged on the upper surface of the base (1), and the airflow buffer hole (7) is arranged on the side wall of the buffer seat (11), and the airflow buffer hole (7) is communicated with the buffer air cavity (6); The connecting seat (12) is fixedly arranged on the bottom surface of the mounting plate (2); The elastic corrugated airbag (13) is fixedly arranged between the buffer seat (11) and the connecting seat (12); the elastic corrugated airbag (13) has the buffer air cavity (6), and the space of the buffer air cavity (6) is adjustable.

4. The vibration and noise reduction device for a compressor according to claim 3, characterized in that: A plurality of the airflow buffer holes (7) are provided, and the plurality of the airflow buffer holes (7) are evenly distributed on the side circumferential wall of the buffer seat (11). A protective mesh cover (27) is provided outside the airflow buffer hole (7).

5. The vibration and noise reduction device for a compressor according to claim 3, characterized in that: The buffer air cavity (6) is in a truncated cone shape, and the diameter of the upper bottom surface of the buffer air cavity (6) is larger than the diameter of the lower bottom surface.

6. The vibration and noise reduction device for a compressor according to claim 1, characterized in that: A docking groove (14) is provided at the edge of the upper surface of the mounting plate (2), and the sound absorbing cover (5) is sleeved in the docking groove (14). A retaining piece is embedded and installed on the side wall of the docking groove (14), and a mounting hole (15) matching the retaining piece is provided on the side wall of the docking groove (14). Two retaining pieces are symmetrically provided, and the retaining pieces are used to retain and fix the sound absorbing cover (5).

7. The vibration and noise reduction device for a compressor according to claim 6, characterized in that: The positioning member includes a positioning column (16), a driving plate (17) and a limiting ring (18); The locking column (16) is movably arranged in the mounting hole (15), and a locking hole matching the locking column (16) is provided through the inner wall of the bottom of the sound absorbing cover (5); The driving plate (17) is fixedly arranged at the middle of the locking column (16), and a locking spring (26) is provided on the bottom surface of the driving plate (17) and the mounting hole (15), and the locking spring (26) is sleeved on the locking column (16); The limiting ring (18) is sleeved on the outer end of the locking column (16), and the limiting ring (18) is fixedly arranged on the end edge of the mounting hole (15). The limiting ring (18) restricts the locking column (16) from popping out of the mounting hole (15) by abutting against the driving plate (17).

8. The vibration and noise reduction device for a compressor according to claim 7, characterized in that: The outer end of the locking column (16) is exposed outside the locking hole, and the outer end of the locking column (16) is configured to be spherical.

9. The vibration and noise reduction device for a compressor according to claim 6, characterized in that: The sound-absorbing cover (5) comprises a retaining seat (19), a cover body (20), and a sound-absorbing inner cushion layer (21); The locking seat (19) is sleeved on the docking groove (14), and the locking hole is provided on the side wall of the locking seat (19), and the locking seat (19) is fixed by being engaged with the locking piece; The cover body (20) and the blocking seat (19) are integrally formed, and a plurality of heat dissipation windows (22) are evenly arranged on the cover body (20), and the heat dissipation windows (22) are used for heat dissipation of the compressor; The sound-absorbing inner cushion layer (21) is fixedly arranged on the inner wall of the cover body (20), and honeycomb-shaped sound-absorbing holes are arranged on the sound-absorbing inner cushion layer (21).

10. The vibration and noise reduction device for a compressor according to claim 9, characterized in that: The locking seat (19) is an annular structure, and the inner edge of the bottom of the locking seat (19) has a chamfered structure. A sound insulation pad (23) is provided between the locking seat (19) and the docking groove (14), and the sound insulation pad (23) is fixedly provided on the inner wall of the docking groove (14).

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