Compressor noise reduction device of air conditioning system

Abstract

The invention discloses a compressor noise reduction device of an air conditioning system, and relates to the technical field of compressors, the compressor noise reduction device comprises a compressor mounted in an air conditioner outdoor unit through a damping and noise reduction mechanism, the damping and noise reduction mechanism comprises an inner sleeve and an outer sleeve arranged outside the inner sleeve, the compressor is fixed in the inner sleeve, and the outer sleeve is fixed in the inner sleeve. The outer sleeve is fixed to an air conditioner outdoor unit base. The inner sleeve and the outer sleeve are connected through a spherical structure, a spherical through hole is formed in the spherical structure in a penetrating mode, and the inner wall of the spherical through hole forms a spherical inner face. Vibration of the compressor is decomposed into multi-directional controllable swing through the spherical structure, sliding friction is converted into rolling friction through the ball array, swing resistance is reduced, multi-stage dissipation, namely mechanical friction and fluid damping, of vibration energy is achieved in combination with contact friction and pneumatic counter-acting force of the elastic damping element, the overall damping efficiency is improved, and noise is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and specifically to a noise reduction device for a compressor in an air conditioning system. Background Art

[0002] Positive displacement compressors (such as reciprocating piston type, scroll type) achieve gas compression through the periodic change of the working chamber volume, and the control of their mechanical vibration and noise is a common problem in the field of fluid machinery. Traditional vibration damping schemes mostly adopt a combined structure of rubber pads and springs. However, such conventional designs expose the following structural defects in the compressor scenario: 1. The vibration of the compressor includes axial, radial, and torsional components, and traditional single-degree-of-freedom vibration damping mechanisms (such as vertical springs) cannot effectively decouple the multi-directional vibration coupling.

[0003] 2. Variable frequency compressors are prone to exciting resonance modes during the low-frequency operation stage, and the linear stiffness characteristics of conventional rubber vibration damping pads are difficult to generate non-linear damping responses. The vibration energy is transmitted along the base to the outer shell, forming low-frequency structure-borne noise.

[0004] 3. Existing vibration damping devices mostly rely on heat dissipation through friction, but the enclosed vibration damping cavity hinders heat diffusion. For example, the design of a vacuum sound insulation cavity can reduce noise, but it forms a heat barrier, resulting in an excessive temperature rise of the compressor. Although an independent cooling fan can force convection, the additional energy consumption and airflow noise increase the system complexity.

[0005] 4. Dynamic sealing structures (such as annular airbags) need to fit tightly to maintain the cavity seal, but excessive contact pressure will inhibit the swing freedom of the vibration damping mechanism. The rigid support characteristics of the buffer pads in the prior art limit the swing amplitude, resulting in the inability to effectively dissipate vibration energy through large-range displacement. Summary of the Invention

[0006] The purpose of the present invention is to provide a noise reduction device for a compressor in an air conditioning system to solve the problems proposed in the above background art.

[0007] To achieve the above invention purpose, the present invention adopts the following technical solutions: A noise reduction device for a compressor in an air conditioning system provided by the present invention includes a compressor installed in an outdoor unit of the air conditioner through a shock and noise reduction mechanism. The shock and noise reduction mechanism includes an inner sleeve and an outer sleeve arranged outside the inner sleeve. The compressor is fixed inside the inner sleeve, and the outer sleeve is fixed on the base of the outdoor unit of the air conditioner; The inner sleeve and the outer sleeve are connected through a spherical structure. A spherical through hole is formed through the spherical structure. The inner wall of the spherical through hole forms a spherical inner surface. An annular embedding block embedded in the spherical through hole is arranged on the outer wall at the top of the inner sleeve. The outer ring surface of the annular embedding block is adapted to the spherical inner surface to form a spherical outer surface. An anti-sway ring is sleeved on the inner sleeve below the annular embedding block. The anti-sway ring can be elastically abutted against the bottom surface of the spherical structure under the action of an elastic damping element to keep the inner sleeve in a vertical state. The spherical structure and the outer sleeve are detachably connected by bolts, and a shock pad is arranged at the connection between the two; the inside of the outer sleeve is hollow to form a hollow sound insulation cavity, and a sound absorption layer is arranged on the inner wall of the outer sleeve; A partition is arranged at the bottom of the inner sleeve. The partition divides the inner sleeve into a lower air cavity and an upper installation cavity. The compressor is fixed in the upper installation cavity. A movable plate is slidably arranged in the lower air cavity. Heat dissipation grooves are uniformly arranged on the inner wall of the upper installation cavity along the circumferential direction. The heat dissipation grooves are communicated with the lower air cavity; A transmission mechanism is connected between the anti-sway ring and the movable plate. The transmission mechanism can couple the sliding of the anti-sway ring and drive the movable plate to move in the lower air cavity, so as to generate air flow in the heat dissipation grooves.

[0008] Further, the spherical structure includes an upper fixing seat and a lower fixing seat. The upper fixing seat and the lower fixing seat have the same structure, and both include an outer ring edge and an arc-shaped surrounding plate connected to the inside of the outer ring edge.

[0009] Further, the spherical inner surface is sequentially formed with an upper sealing area, a middle rolling area and a lower sealing area from top to bottom. The inner side surface of the middle rolling area is uniformly provided with rolling balls. The rolling balls form a rolling surface abutted against the spherical outer surface in the middle rolling area. A sealing pad is arranged between the upper sealing area and the lower sealing area.

[0010] Further, the transmission mechanism includes a sliding ring slidably sleeved at the bottom of the inner sleeve, a fixing ring arranged between the sliding ring and the anti-sway ring, and a lever assembly connecting the sliding ring and the anti-sway ring. Hinge grooves are uniformly formed in the outer side of the fixing ring along the circumferential direction. Each hinge groove is provided with the lever assembly. The lever assembly includes a swinging main rod, an upper hinge rod and a lower hinge rod. The swinging main rod is rotatably arranged in the hinge groove through a rotating support shaft. The top end of the swinging main rod is hinged to the anti-sway ring through the upper hinge rod. The bottom end of the swinging main rod is hinged to the sliding ring through the lower hinge rod. Connecting rods are uniformly arranged at the bottom end of the sliding ring along the circumferential direction. The bottom ends of the connecting rods penetrate and extend into the lower air cavity and are fixed to the movable plate.

[0011] Further, the elastic damping element includes a pre-tightening spring arranged between the top of the movable plate and the top of the lower air cavity. The pre-tightening spring is a variable pitch helical spring, forming a progressive stiffness characteristic.

[0012] Furthermore, the sound absorbing layer is a gradient density composite structure, which includes a micro-perforated plate, a glass fiber layer and a polyurethane foam layer arranged in sequence from the inside to the outside.

[0013] Furthermore, the shock-absorbing pad is made of EPDM rubber and has a hardness of 55-65HA.

[0014] Furthermore, a detachable inspection window is provided on the outer wall of the outer sleeve, and a sound pressure level sensor is integrated on the inner side of the window frame to monitor the noise value in real time.

[0015] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects: 1. The present invention decomposes the vibration of the compressor into multi-directional controllable swings through a spherical structure, converts sliding friction into rolling friction using a ball array, reduces swing resistance, and combines the contact friction of the elastic damping element with the pneumatic reaction force to achieve multi-level dissipation of vibration energy, i.e. mechanical friction + fluid damping, to improve the overall damping efficiency. The elastic damping element uses a preloaded spring and pneumatic damping to work together, relying on spring linear buffering when the amplitude is small, and triggering the joint suppression of nonlinear stiffness characteristics and high-speed airflow injection when the amplitude is large, thereby improving the vibration transmission attenuation rate and effectively avoiding resonance.

[0016] 2. The spherical structure of the present invention adopts a layered design of upper sealing area, lower sealing area and rolling area. The elastic sealing pad maintains dynamic sealing within a limited swing range, reduces dust intrusion, and prolongs service life. The gradient sound absorption layer (micro-perforated plate + glass fiber + polyurethane foam) replaces the vacuum cavity to avoid vacuum attenuation problems and reduce maintenance costs.

[0017] 3. The displacement of the anti-sway ring of the present invention is converted into a piston-type airflow circulation through a lever mechanism, so that airflow is formed in the heat dissipation groove to reduce the surface temperature of the compressor and eliminate the "stifling tank effect". The reverse airflow generated by the reciprocating motion of the movable plate forms additional damping, further consuming residual vibration energy and realizing the functional coupling of heat dissipation and vibration reduction.

[0018] 4. The external sound pressure sensor monitors the noise value in real time, and the split ball structure and sleeve quick-release connection shorten the maintenance time.

[0019] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. 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 structural diagram of the shock absorption and noise reduction mechanism of the present invention; Figure 2 It is a schematic structural diagram of the outdoor unit of the air conditioner of the present invention; Figure 3 It is a schematic internal structural diagram of the outdoor unit of the air conditioner of the present invention; Figure 4 is Figure 3 the cross-sectional structural diagram of; Figure 5 It is a schematic structural diagram of the sound insulation layer of the present invention; Figure 6 It is a schematic structural diagram of the spherical structure of the present invention; Figure 7 It is a schematic structural diagram of the inner sleeve and the transmission mechanism of the present invention.

[0022] In the figure: 1 - Outdoor unit of the air conditioner; 11 - Base of the outdoor unit of the air conditioner; 2 - Shock absorption and noise reduction mechanism; 21 - Inner sleeve; 211 - Partition; 212 - Lower air cavity; 213 - Upper installation cavity; 214 - Movable plate; 215 - Heat dissipation groove; 22 - Outer sleeve; 221 - Hollow sound insulation cavity; 222 - Detachable maintenance window; 23 - Sound absorption layer; 231 - Micro-perforated plate; 232 - Glass fiber layer; 233 - Polyurethane foam layer; 24 - Shock pad; 3 - Compressor; 4 - Spherical structure; 41 - Spherical through hole; 411 - Spherical inner surface; 4111 - Upper sealing area; 4112 - Middle rolling area; 4114 - Ball; 4113 - Lower sealing area; 4115 - Sealing pad; 42 - Ring-shaped embedded block; 43 - Anti-sway ring; 44 - Elastic damping element; 45 - Upper fixing seat; 451 - Outer ring edge; 452 - Arc-shaped enclosing plate; 46 - Lower fixing seat; 5 - Transmission mechanism; 51 - Sliding ring; 52 - Fixed ring; 521 - Hinge groove; 53 - Lever assembly; 531 - Swing main rod; 532 - Upper hinge rod; 533 - Lower hinge rod; 534 - Connecting rod. Detailed implementation manners

[0023] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0024] Please refer to Figures 1-7, the present invention provides a noise reduction device for a compressor of an air conditioning system, including a compressor 3 installed in an outdoor unit 1 of the air conditioner through a shock and noise reduction mechanism 2. The shock and noise reduction mechanism 2 includes an inner sleeve 21 and an outer sleeve 22 arranged outside the inner sleeve 21. The compressor 3 is fixed inside the inner sleeve 21, and the outer sleeve 22 is fixed on the base of the outdoor unit 1 of the air conditioner; The inner sleeve 21 and the outer sleeve 22 are connected through a spherical structure 4. A spherical through hole 41 is provided through the spherical structure 4. The inner wall of the spherical through hole 41 forms a spherical inner surface 411. An annular embedding block 42 embedded in the spherical through hole 41 is provided on the outer wall at the top of the inner sleeve 21. The outer ring surface of the annular embedding block 42 is adapted to the spherical inner surface 411 to form a spherical outer surface. An anti-swing ring 43 is sleeved on the inner sleeve 21 below the annular embedding block 42. The anti-swing ring 43 can be elastically abutted against the bottom surface of the spherical structure 4 under the action of an elastic damping element 44 to keep the inner sleeve 21 in a vertical state. The spherical structure 4 and the outer sleeve 22 are detachably connected by bolts, and a shock pad 24 is provided at the connection between the two; the interior of the outer sleeve 22 is hollow to form a hollow sound insulation cavity 221, and a sound absorption layer 23 is provided on the inner wall of the outer sleeve 22; A partition plate 211 is provided at the bottom of the inner sleeve 21. The partition plate 211 divides the interior of the inner sleeve 21 into a lower air cavity 212 and an upper installation cavity 213. The compressor 3 is fixed in the upper installation cavity 213. A movable plate 214 is slidably arranged in the lower air cavity 212. Heat dissipation grooves 215 are uniformly arranged along the circumferential direction on the inner wall of the upper installation cavity 213. The heat dissipation grooves 215 communicate with the lower air cavity 212; a transmission mechanism 5 is connected between the anti-swing ring 43 and the movable plate 214. The transmission mechanism 5 can couple the sliding of the anti-swing ring 43 and drive the movable plate 214 to move in the lower air cavity 212, so as to generate an air flow in the heat dissipation grooves 215.

[0025] Working principle: When the compressor 3 operates, the composite vibration (including swing and axial vibration) generated by it is transmitted to the spherical structure 4 through the inner sleeve 21. The curved surface cooperation between the spherical through hole 41 of this structure and the annular embedding block 42 decomposes the vibration into multi-degree-of-freedom swing. The transverse vibration component is converted into three-dimensional swing in the limited space of the inner sleeve 21. The elastic damping element 44 pushes the anti-swing ring 43 to continuously abut against the bottom surface of the spherical structure 4, generating a reverse damping moment through the friction of the contact surface, converting the swing energy into heat energy and dissipating it. At the same time, the inner sleeve 21 is guided to quickly reset to the vertical state to suppress resonance; the axial vibration component is absorbed through the viscoelastic deformation of the shock pad 24, significantly reducing the vibration transmission efficiency.

[0026] During the above process, the displacement of the anti-sway ring 43 drives the movable plate 214 in the lower air chamber 212 through the transmission mechanism 5, causing it to reciprocate along the axis of the inner sleeve 21 to form a piston effect. When the movable plate 214 moves downward, it inhales external air, and when it moves upward, the compressed air is discharged at high speed through the heat dissipation slots 215. This not only forms a reverse pneumatic damping to offset the residual vibration but also improves the heat dissipation performance of the compressor 3 through forced air circulation.

[0027] In terms of acoustic control, the hollow sound insulation chamber 221 of the outer sleeve 22 and the sound absorption layer 23 cooperate. The sound absorption layer 23 absorbs medium and high-frequency noise through its porous structure, and the sound insulation chamber blocks the sound wave propagation path. Together with the acoustic impedance mismatch layer formed by the air gap between the inner and outer sleeves 22, it realizes the double isolation of solid-borne sound and air-borne sound, and finally achieves the collaborative optimization of high-efficiency noise reduction and stable heat dissipation.

[0028] Through the combined design of spherical multi-directional vibration damping, swing-driven heat dissipation, and gradient sound insulation, the present invention improves the heat dissipation efficiency while reducing vibration and noise, and has both structural reliability and environmental adaptability, especially suitable for high-load commercial air-conditioning scenarios.

[0029] In this embodiment, the spherical structure 4 includes an upper fixing seat 45 and a lower fixing seat 46. The upper fixing seat 45 and the lower fixing seat 46 have the same structure, both including an outer ring edge 451 and an arc-shaped surrounding plate 452 connected to the inner side of the outer ring edge 451. When the compressor 3 operates, its vibration energy is transmitted to the inner sleeve 21, driving the annular embedded block 42 to swing within the spherical structure 4 composed of the upper fixing seat 45 and the lower fixing seat 46. The symmetrical design of the upper fixing seat 45 and the lower fixing seat 46 forms a mechanical constraint, forcibly converting the disordered swinging vibration of the compressor 3 into a multi-directional controllable swing around the center of the sphere. This not only ensures the three-dimensional swing freedom but also synchronously dissipates the vibration energy through the friction damping of the bilateral contact surfaces. The split design of the spherical structure 4 significantly improves the assembly accuracy of the spherical structure 4.

[0030] In this embodiment, the inner spherical surface 411 is successively formed with an upper sealing area 4111, a middle rolling area 4112, and a lower sealing area 4113 from top to bottom. The inner side surface of the middle rolling area 4112 is evenly provided with rolling balls 4114, and the rolling balls 4114 form a rolling surface that abuts against the outer spherical surface in the middle rolling area 4112. A sealing gasket 4115 is arranged between the upper sealing area 4111 and the lower sealing area 4113.

[0031] Based on the above design, when the compressor 3 vibrates and drives the inner sleeve 21 to swing, the upper sealing area 4111 and the lower sealing area 4113 of the spherical inner surface 411 are tightly fitted to the annular embedding block 42 through the elastic sealing gasket 4115 to form a dynamic sealing barrier, which not only prevents external dust from invading the rolling area but also avoids the leakage of internal lubricating medium. In the middle rolling area 4112, the ball 4114 array converts the sliding friction between the inner sleeve 21 and the spherical structure 4 into rolling friction, greatly reducing the swinging resistance and enabling the vibration energy to be dissipated more efficiently through the damping element. During the swinging process of the inner sleeve 21, the balls 4114 roll regularly along the arc track of the middle rolling area 4112, and their combined rotational and orbital motions form a uniform force distribution, avoiding local stress concentration. The upper and lower sealing areas 4113 compensate for the small gap changes caused by swinging through the elastic deformation of the sealing gasket 4115 to ensure that the sealing performance is not affected by the swinging angle. This design enables the spherical structure 4 to allow multi-directional swinging while taking into account low-friction movement, long-term sealing, and anti-pollution capabilities.

[0032] In this embodiment, the transmission mechanism 5 includes a sliding ring 51 slidably sleeved on the bottom of the inner sleeve 21, a fixed ring 52 disposed between the sliding ring 51 and the anti-swing ring 43, and a lever assembly 53 connecting the sliding ring 51 and the anti-swing ring 43. The outer side of the fixed ring 52 is evenly provided with hinge grooves 521 along the circumferential direction, and each hinge groove 521 is provided with the lever assembly 53. The lever assembly 53 includes a swinging main rod 531, an upper hinge rod 532, and a lower hinge rod 533. The swinging main rod 531 is rotatably disposed in the hinge groove 521 through a rotating support shaft. The top end of the swinging main rod 531 is hinged to the anti-swing ring 43 through the upper hinge rod 532, and the bottom end of the swinging main rod 531 is hinged to the sliding ring 51 through the lower hinge rod 533. The bottom end of the sliding ring 51 is evenly provided with connecting rods 534 along the circumferential direction. The bottom ends of the connecting rods 534 penetrate and extend into the lower air cavity 212 and are fixedly connected to the movable plate 214. When the compressor 3 vibrates and causes the anti-swing ring 43 to move up and down, the anti-swing ring 43 drives the swinging main rod 531 to rotate around the rotating support shaft through the upper hinge rod 532, and the lower hinge rod 533 at the bottom end of the main rod converts the swinging into the vertical movement of the sliding ring 51.

[0033] Based on the above design, when the compressor 3 vibrates and causes the anti-swing ring 43 to displace, the multi-directional hinged design of the lever assembly 53 converts the swinging into a directional mechanical movement. The up and down displacement of the anti-swing ring 43 drives the swinging main rod 531 to rotate around the support shaft through the upper hinge rod 532, and the bottom end of the main rod drives the sliding ring 51 to slide axially along the inner sleeve 21 through the lower hinge rod 533. Through the connecting rod 534 at the bottom of the sliding ring 51 (such as Figure 4As shown in the figure), it further drives the movable plate 214 to reciprocate in the air cavity, so that the piston-like movement of the movable plate 214 forms a forced air flow cycle. When the movable plate 214 moves downward, it inhales external air through the heat dissipation slots 215. When the movable plate 214 moves upward, it compresses the cavity and pushes the air flow to be discharged at high speed, which not only suppresses vibration through pneumatic reaction force, but also enhances the heat dissipation effect of the compressor 3. The circumferential symmetric layout of the lever assembly 53 enables the four swing main rods 531 to work together, compensates for the spatial swing deviation of the inner sleeve 21 through the independent movement of the hinge slots 521, and ensures the movement coherence of the transmission system; the sleeved structure of the sliding ring 51 and the fixed ring 52 maintains the coaxial accuracy of each component and avoids mechanical jamming caused by vibration offset.

[0034] In this embodiment, the elastic damping element 44 includes a pre-tightening spring disposed between the bottom of the movable plate 214 and the bottom of the lower air cavity 212. When the vibration of the compressor 3 is transmitted to the inner sleeve 21, the movable plate 214 generates a vertical displacement under the drive of the transmission mechanism 5. At this time, the pre-tightening spring forms a two-stage effect during the compression and rebound processes: in the initial stage, a constant reaction force generated by pre-compression resists the vibration impact. When the amplitude exceeds the threshold, the non-linear stiffness characteristic of the spring appears, and the damping strength is gradually enhanced. The movement of the movable plate 214 synchronously changes the volume of the lower air cavity 212, forcing the air to generate fluid resistance when passing through the heat dissipation slots 215. This pneumatic damping effect and the mechanical damping of the spring form a composite attenuation design.

[0035] In this embodiment, the sound-absorbing layer 23 is a gradient density composite structure, including a micro-perforated plate 231, a glass fiber layer 232, and a polyurethane foam layer 233 arranged in sequence from the inside to the outside. When the noise of the compressor 3 penetrates the outer sleeve 22, the sound wave first contacts the micro-perforated plate 231, and its sub-millimeter aperture design absorbs high-frequency noise through the air viscosity effect; then the sound wave enters the medium-density glass fiber layer 232, and the fiber staggered structure dissipates medium-frequency sound energy through friction; finally, the remaining low-frequency sound waves cause multiple reflections in the closed-cell structure of the polyurethane foam layer 233 and are gradually attenuated through the cavity resonance effect. The density gradient of the three-layer material forms an acoustic impedance gradient layer, effectively reducing sound wave reflection and achieving continuous sound absorption from high frequency to low frequency. The micro-perforated plate 231 also serves as a protective layer to prevent fiber materials from falling off and polluting the internal mechanism.

[0036] In this embodiment, the buffer pad is made of ethylene propylene diene monomer rubber, and its hardness is 55-65HA.

[0037] In this embodiment, a detachable maintenance window 222 is provided on the outer wall of the outer sleeve 22, and a sound pressure level sensor is integrated on the inner side of the window frame to monitor the noise value in real time.

[0038] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A noise reduction device for a compressor of an air conditioning system, comprising a compressor installed in an outdoor unit of the air conditioner through a shock absorption and noise reduction mechanism. The shock absorption and noise reduction mechanism includes an inner sleeve and an outer sleeve arranged outside the inner sleeve. The compressor is fixed inside the inner sleeve, and the outer sleeve is fixed on the base of the outdoor unit of the air conditioner; It is characterized in that The inner sleeve and the outer sleeve are connected through a spherical structure. A spherical through hole is formed through the spherical structure. The inner wall of the spherical through hole forms a spherical inner surface. An annular embedding block embedded in the spherical through hole is arranged on the outer wall at the top of the inner sleeve. The outer ring surface of the annular embedding block is adapted to the spherical inner surface to form a spherical outer surface. An anti-sway ring is sleeved on the inner sleeve below the annular embedding block. The anti-sway ring can be elastically abutted against the bottom surface of the spherical structure under the action of an elastic damping element to keep the inner sleeve in a vertical state. The spherical structure and the outer sleeve are detachably connected by bolts, and a shock pad is arranged at the connection between the two; The interior of the outer sleeve is hollow to form a hollow sound insulation cavity, and a sound absorption layer is arranged on the inner wall of the outer sleeve; A partition is arranged at the bottom of the inner sleeve. The partition divides the interior of the inner sleeve into a lower air cavity and an upper installation cavity. The compressor is fixed in the upper installation cavity. A movable plate is slidably arranged in the lower air cavity. Heat dissipation grooves are uniformly arranged along the circumferential direction on the inner wall of the upper installation cavity. The heat dissipation grooves are communicated with the lower air cavity; The anti-sway ring and the movable plate are connected through a transmission mechanism. The transmission mechanism can couple the sliding of the anti-sway ring and drive the movable plate to move in the lower air cavity, so as to generate an air flow in the heat dissipation grooves.

2. The compressor noise reduction device of the air conditioning system according to claim 1, wherein The spherical structure includes an upper fixing seat and a lower fixing seat. The upper fixing seat and the lower fixing seat have the same structure, and both include an outer ring edge and an arc-shaped surrounding plate connected to the inside of the outer ring edge.

3. The compressor noise reduction device of the air conditioning system according to claim 1, wherein, The spherical inner surface is sequentially formed with an upper sealing area, a middle rolling area and a lower sealing area from top to bottom. The inner side surface of the middle rolling area is uniformly provided with rolling balls, and the rolling balls form a rolling surface that abuts against the spherical outer surface in the middle rolling area. A sealing pad is arranged between the upper sealing area and the lower sealing area.

4. The compressor noise reduction device of the air conditioning system according to claim 1, characterized in that, The transmission mechanism includes a sliding ring slidably sleeved at the bottom of the inner sleeve, a fixing ring arranged between the sliding ring and the anti-sway ring, and a lever assembly connecting the sliding ring and the anti-sway ring. Hinge grooves are uniformly formed along the circumferential direction on the outer side of the fixing ring. Each hinge groove is provided with the lever assembly. The lever assembly includes a swinging main rod, an upper hinge rod and a lower hinge rod. The swinging main rod is rotatably arranged in the hinge groove through a rotating support shaft. The top end of the swinging main rod is hinged to the anti-sway ring through the upper hinge rod, and the bottom end of the swinging main rod is hinged to the sliding ring through the lower hinge rod. Connecting rods are uniformly arranged along the circumferential direction at the bottom end of the sliding ring. The bottom ends of the connecting rods penetrate and extend into the lower air cavity and are fixed to the movable plate.

5. The compressor noise reduction device of the air conditioning system according to claim 1, characterized in that, The elastic damping element includes a pre-tightening spring arranged between the top of the movable plate and the top of the lower air cavity. The pre-tightening spring is a variable pitch helical spring, forming a progressive stiffness characteristic.

6. The noise reduction device for the compressor of the air conditioning system according to claim 1, characterized in that The sound absorption layer is a gradient density composite structure, which includes a micro-perforated plate, a glass fiber layer and a polyurethane foam layer arranged in sequence from inside to outside.

7. The compressor noise reduction device of the air conditioning system according to claim 1, characterized in that, The shock pad is made of ethylene propylene diene monomer rubber, and its hardness is 55 - 65 HA.

8. The compressor noise reduction device of the air conditioning system according to claim 1, characterized in that, A detachable maintenance window is provided on the outer wall of the outer cylinder, and a sound pressure level sensor is integrated inside the window frame to monitor the noise value in real time.

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