Compressor noise reduction device for air conditioning system

Abstract

The present invention discloses a compressor noise reduction device for an air-conditioning system, which relates to the technical field of compressors and includes a compressor installed in an air-conditioning outdoor unit via a vibration-damping and noise-reduction mechanism, wherein the vibration-damping and noise-reduction mechanism includes an inner sleeve and an outer sleeve arranged outside the inner sleeve, wherein the compressor is fixed in the inner sleeve, and the outer sleeve is fixed on the base of the air-conditioning outdoor unit; the inner sleeve and the outer sleeve are connected by a spherical structure, wherein a spherical through-hole is provided through the spherical structure, and the inner wall of the spherical through-hole forms a spherical inner surface. The invention decomposes the vibration of the compressor into multi-directional controllable swings through the 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-stage dissipation of vibration energy, namely mechanical friction + fluid damping, thereby improving the overall damping efficiency and reducing noise.

Description

Technical Field

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

[0002] Positive displacement compressors (such as reciprocating piston and scroll types) achieve gas compression through periodic changes in the working chamber volume. Controlling mechanical vibration and noise is a common challenge in the fluid machinery field. Traditional vibration reduction solutions often use a combination of rubber pads and springs. However, this conventional design exposes the following structural flaws in compressor applications:

[0003] 1. Compressor vibration includes axial, radial and torsional components. Traditional single-degree-of-freedom vibration reduction mechanisms (such as vertical springs) cannot effectively decouple multi-directional vibration coupling.

[0004] 2. Variable frequency compressors are prone to exciting resonant modes during low-frequency operation. The linear stiffness characteristics of conventional rubber vibration damping pads make it difficult to produce a nonlinear damping response. Vibration energy is transferred along the base to the housing, generating low-frequency structure-borne noise.

[0005] 3. Existing vibration damping devices often rely on frictional heat dissipation to dissipate energy, but enclosed damping chambers hinder heat dissipation. For example, while vacuum soundproofing can reduce noise, it creates a thermal barrier, causing compressor temperatures to exceed specified limits. Independent cooling fans can force convection, but the added energy consumption and airflow noise increase system complexity.

[0006] 4. Dynamic sealing structures (such as annular airbags) require a tight fit to maintain cavity sealing, but excessive contact pressure can inhibit the vibration damping mechanism's freedom of movement. The rigid support characteristics of existing cushions limit the amplitude of movement, preventing the effective dissipation of vibration energy through large-scale displacement. Summary of the Invention

[0007] The object of the present invention is to provide a compressor noise reduction device for an air-conditioning system to solve the problems raised in the above background technology.

[0008] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0009] The present invention provides a compressor noise reduction device for an air conditioning system, comprising a compressor installed in an air conditioner outdoor unit via a vibration-damping and noise-reduction mechanism, wherein the vibration-damping and noise-reduction mechanism comprises an inner sleeve and an outer sleeve disposed outside the inner sleeve, wherein the compressor is fixed in the inner sleeve, and the outer sleeve is fixed to a base of the air conditioner outdoor unit;

[0010] The inner sleeve and the outer sleeve are connected by a spherical structure, a spherical through-hole is provided on the spherical structure, the inner wall of the spherical through-hole forms a spherical inner surface, an annular embedded block embedded in the spherical through-hole is provided on the outer wall of the top of the inner sleeve, the outer ring surface of the annular embedded block is adapted to form a spherical outer surface, an anti-swing ring is sleeved on the inner sleeve below the annular embedded block, the anti-swing ring can contact the bottom surface of the spherical structure upward under the action of the 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-absorbing pad is provided at the connection between the two; a hollow sound insulation cavity is formed in the interior of the outer sleeve, and a sound-absorbing layer is provided on the inner wall of the outer sleeve;

[0011] A partition is provided at the bottom of the inner sleeve, which divides the inner sleeve into a lower air cavity and an upper mounting cavity. The compressor is fixed in the upper mounting cavity. A movable plate is slidingly provided in the lower air cavity. The inner wall of the upper mounting cavity is evenly provided with heat dissipation grooves along the circumferential direction. The heat dissipation grooves are connected to the lower air cavity. The anti-swing ring and the movable plate are connected by a transmission mechanism. The transmission mechanism can couple the sliding of the anti-swing ring and drive the movable plate to move in the lower air cavity, so that airflow is generated in the heat dissipation grooves.

[0012] Furthermore, 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, both including an outer ring edge and an arc-shaped enclosure plate connected to the inner side of the outer ring edge.

[0013] Furthermore, the inner surface of the sphere is formed with an upper sealing area, a middle rolling area and a lower sealing area from top to bottom, and the inner side surface of the middle rolling area is evenly provided with balls. The balls form a rolling surface in the middle rolling area that contacts the outer surface of the sphere, and a sealing gasket is provided between the upper sealing area and the lower sealing area.

[0014] Furthermore, the transmission mechanism includes a sliding ring slidably mounted on the bottom of the inner sleeve, a fixed ring arranged between the sliding ring and the anti-swing ring, and a lever assembly connecting the sliding ring and the anti-swing ring. The outer side of the fixed ring is evenly provided with hinge grooves in the circumferential direction, and the lever assembly is arranged in each hinge groove. The lever assembly includes a swing main rod, an upper hinge rod and a lower hinge rod. The swing main rod is rotated in the hinge groove by a rotating support shaft. The top end of the swing main rod is hinged to the anti-swing ring through the upper hinge rod, and the bottom end of the swing main rod is hinged to the sliding ring through the lower hinge rod. The bottom end of the sliding ring is evenly provided with connecting rods in the circumferential direction. The bottom end of the connecting rod extends through the lower air cavity and is fixedly connected to the movable plate.

[0015] Furthermore, the elastic damping element includes a preload spring arranged between the top of the movable plate and the top of the lower air cavity, and the preload spring is a variable pitch coil spring to form a progressive stiffness characteristic.

[0016] 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.

[0017] Furthermore, the shock-absorbing pad is made of EPDM rubber and has a hardness of 55-65HA.

[0018] 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.

[0019] Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects:

[0020] 1. This invention uses a spherical structure to decompose compressor vibration into multi-directional, controllable swings. A ball array converts sliding friction into rolling friction, reducing swing resistance. Combined with the contact friction of the elastic damping element and the aerodynamic reaction force, this achieves multi-stage dissipation of vibration energy, i.e., mechanical friction + fluid damping, improving overall damping efficiency. The elastic damping element utilizes a preloaded spring and synergistically with pneumatic damping. This linear spring provides buffering at low amplitudes, while high amplitudes trigger a combined suppression of nonlinear stiffness characteristics and high-speed airflow, improving vibration transmission attenuation and effectively avoiding resonance.

[0021] 2. The spherical structure of this invention utilizes a layered design with upper and lower sealing areas and a rolling zone. The elastic sealing gasket maintains a dynamic seal within a limited swing range, reducing dust intrusion and extending service life. A gradient sound-absorbing layer (micro-perforated plate + fiberglass + polyurethane foam) replaces the vacuum chamber, preventing vacuum attenuation and reducing maintenance costs.

[0022] 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.

[0023] 4. The external sound pressure sensor monitors the noise level in real time, and the split ball structure and sleeve quick-release connection shorten the maintenance time.

[0024] 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

[0025] The accompanying drawings, 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.

[0026] Figure 1 It is a structural schematic diagram of the vibration reduction and noise reduction mechanism of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the air conditioner outdoor unit of the present invention;

[0028] Figure 3 It is a schematic diagram of the internal structure of the air conditioner outdoor unit of the present invention;

[0029] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure;

[0030] Figure 5 Schematic diagram of the sound insulation layer structure of the present invention;

[0031] Figure 6 It is a schematic diagram of the spherical structure of the present invention;

[0032] Figure 7 It is a schematic structural diagram of the inner sleeve and transmission mechanism of the present invention.

[0033] In the picture:

[0034] 1-air conditioner outdoor unit; 11-air conditioner outdoor unit base;

[0035] 2 - shock-absorbing and noise-reducing mechanism; 21 - inner sleeve; 211 - partition; 212 - lower air cavity; 213 - upper mounting cavity; 214 - movable plate; 215 - heat dissipation slot; 22 - outer sleeve; 221 - hollow sound insulation cavity; 222 - removable inspection window; 23 - sound-absorbing layer; 231 - micro-perforated plate; 232 - glass fiber layer; 233 - polyurethane foam layer; 24 - shock-absorbing pad;

[0036] 3-Compressor;

[0037] 4 - spherical structure; 41 - spherical through hole; 411 - spherical inner surface; 4111 - upper sealing area; 4112 - middle rolling area; 4114 - ball bearing; 4113 - lower sealing area; 4115 - sealing gasket; 42 - annular embedded block; 43 - anti-sway ring; 44 - elastic damping element; 45 - upper fixing seat; 451 - outer ring edge; 452 - arc-shaped enclosure; 46 - lower fixing seat;

[0038] 5-transmission mechanism; 51-sliding ring; 52-fixing ring; 521-hinge groove; 53-lever assembly; 531-swing main rod; 532-upper hinge rod; 533-lower hinge rod; 534-connecting rod. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0040] See also Figure 1-Figure 7 The present invention provides a compressor noise reduction device for an air-conditioning system, comprising a compressor 3 installed in an air-conditioning outdoor unit 1 via a vibration-damping and noise-reduction mechanism 2, wherein the vibration-damping and noise-reduction mechanism 2 comprises an inner sleeve 21 and an outer sleeve 22 disposed outside the inner sleeve 21, wherein the compressor 3 is fixed in the inner sleeve 21, and the outer sleeve 22 is fixed to the base of the air-conditioning outdoor unit 1;

[0041] The inner sleeve 21 and the outer sleeve 22 are connected by a spherical structure 4, a spherical through hole 41 is provided on the spherical structure 4, the inner wall of the spherical through hole 41 forms a spherical inner surface 411, and an annular embedded block 42 is provided on the outer wall of the top of the inner sleeve 21, which is embedded in the spherical through hole 41. The outer ring surface of the annular embedded 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 embedded block 42. The anti-swing ring 43 can contact the bottom surface of the spherical structure 4 upward under the action of the 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-absorbing pad 24 is provided at the connection between the two; the inner hollow of the outer sleeve 22 forms a hollow sound insulation cavity 221, and the inner wall of the outer sleeve 22 is provided with a sound-absorbing layer 23;

[0042] A partition 211 is provided at the bottom of the inner sleeve 21, and the partition 211 divides the inner sleeve 21 into a lower air cavity 212 and an upper mounting cavity 213. The compressor 3 is fixed in the upper mounting cavity 213, and a movable plate 214 is slidingly provided in the lower air cavity 212. The inner wall of the upper mounting cavity 213 is evenly provided with heat dissipation grooves 215 along the circumferential direction, and the heat dissipation grooves 215 are connected to the lower air cavity 212; the anti-swing ring 43 and the movable plate 214 are connected by a transmission mechanism 5, and 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 that airflow is generated in the heat dissipation groove 215.

[0043] Working principle: when the compressor 3 is running, the composite vibration (including swing and axial vibration) generated by it is transmitted to the spherical structure 4 through the inner sleeve 21. The spherical through hole 41 of the structure cooperates with the curved surface of the annular embedded block 42 to decompose the vibration into multi-degree-of-freedom swing, and the lateral vibration component is converted into a three-dimensional swing of the inner sleeve 21 in a limited space. The elastic damping element 44 pushes the anti-swing ring 43 to continuously press against the bottom surface of the spherical structure 4, and generates a reverse damping torque through the friction of the contact surface, converting the swing energy into heat energy dissipation, and at the same time guiding the inner sleeve 21 to quickly return to a vertical state to suppress resonance; the axial vibration component is absorbed by the viscoelastic deformation of the shock-absorbing pad 24, significantly reducing the vibration transmission efficiency.

[0044] During the above process, the displacement of the anti-sway ring 43 is linked to the movable plate 214 in the lower air cavity 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 is in the downward stage, it inhales external air, and when it is in the upward stage, the compressed air is discharged at high speed through the heat dissipation groove 215, thereby forming reverse aerodynamic damping to offset residual vibration and improving the heat dissipation performance of the compressor 3 through forced air circulation.

[0045] In terms of acoustic control, the hollow sound insulation cavity 221 of the outer sleeve 22 works together with the sound absorbing layer 23. The sound absorbing layer 23 absorbs medium and high frequency noise through its porous structure. The sound insulation cavity blocks the sound wave propagation path, and cooperates with the acoustic impedance mismatch layer formed by the air gap between the inner and outer sleeves 22 to achieve dual isolation of solid sound transmission and air sound transmission, ultimately achieving coordinated optimization of efficient noise reduction and stable heat dissipation.

[0046] The present invention improves heat dissipation efficiency while reducing vibration noise through the coordinated design of spherical multi-directional vibration reduction, swing-driven heat dissipation and gradient sound insulation. It has both structural reliability and environmental adaptability and is particularly suitable for high-load commercial air-conditioning scenarios.

[0047] 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 451 and an arc-shaped enclosure 452 connected to the inner side of the outer ring 451. When the compressor 3 is in operation, its vibration energy is transmitted to the inner sleeve 21, driving the annular embedded block 42 to swing within the spherical structure 4 formed by 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 multi-directional controllable swinging around the center of the sphere. This not only ensures three-dimensional swinging freedom, but also synchronously dissipates vibration energy through friction damping on the bilateral contact surfaces. The split design of the spherical structure 4 significantly improves the assembly accuracy of the spherical structure 4.

[0048] In this embodiment, the spherical inner surface 411 is formed with an upper sealing area 4111, a middle rolling area 4112 and a lower sealing area 4113 from top to bottom, and the inner side surface of the middle rolling area 4112 is evenly provided with balls 4114. The balls 4114 form a rolling surface in the middle rolling area 4112 that contacts the outside of the spherical surface, and a sealing gasket 4115 is provided between the upper sealing area 4111 and the lower sealing area 4113.

[0049] Based on the above design, when the compressor 3 vibrates and drives the inner sleeve 21 to oscillate, the upper and lower sealing areas 4111 and 4113 of the spherical inner surface 411 tightly adhere to the annular insert 42 via the elastic sealing gasket 4115, forming a dynamic sealing barrier that prevents external dust from intruding into the rolling area and prevents leakage of the internal lubricant. In the central rolling area 4112, an array of balls 4114 converts sliding friction between the inner sleeve 21 and the spherical structure 4 into rolling friction, significantly reducing oscillation resistance and enabling vibration energy to be more efficiently dissipated through the damping element. During the oscillation of the inner sleeve 21, the balls 4114 roll regularly along the curved track of the central rolling area 4112. Their combined rotation and revolution motion creates a uniform force distribution, preventing localized stress concentration. The elastic deformation of the sealing gasket 4115 in the upper and lower sealing areas 4113 compensates for minor gap changes caused by oscillation, ensuring that sealing performance is unaffected by the oscillation angle. This design allows the spherical structure 4 to oscillate in multiple directions while maintaining low friction, long-lasting sealing, and anti-contamination capabilities.

[0050] In this embodiment, the transmission mechanism 5 includes a sliding ring 51 slidably mounted on the bottom of the inner sleeve 21, a fixed ring 52 arranged 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 uniformly provided with hinge grooves 521 along the circumferential direction. The lever assembly 53 is arranged in each hinge groove 521. The lever assembly 53 includes a swing main rod 531, an upper hinge rod 532 and a lower hinge rod 533. The hinged rod 533, the swinging main rod 531, is rotatably mounted within the hinge slot 521 via a rotating fulcrum. The top end of the swinging main rod 531 is hinged to the anti-swing ring 43 via an upper hinged rod 532. The bottom end of the swinging main rod 531 is hinged to the sliding ring 51 via a lower hinged rod 533. Connecting rods 534 are evenly arranged along the circumference of the bottom end of the sliding ring 51. The bottom ends of the connecting rods 534 extend through the lower air cavity 212 and are fixedly connected to the movable plate 214. When the anti-swing ring 43 vibrates due to the compressor 3, the anti-swing ring 43 drives the swinging main rod 531 to rotate about the rotating fulcrum via the upper hinged rod 532. The lower hinged rod 533 at the bottom end of the main rod converts the swinging movement into vertical motion of the sliding ring 51.

[0051] Based on the above design, when the vibration of the compressor 3 causes the anti-swing ring 43 to move, the multi-directional hinge design of the lever assembly 53 converts the swing into a directional mechanical motion. The up and down displacement of the anti-swing ring 43 drives the swing main rod 531 to rotate around the support shaft through the upper hinge rod 532. 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. Figure 4 As shown, the movable plate 214 is driven to reciprocate within the air cavity, resulting in a forced airflow cycle caused by the piston-like motion of the movable plate 214. As the movable plate 214 descends, external air is drawn in through the heat dissipation slots 215. As the movable plate 214 ascends, the cavity is compressed and the airflow is expelled at high speed. This not only suppresses vibration through aerodynamic reaction force but also enhances the heat dissipation effect of the compressor 3. The circularly symmetrical layout of the lever assembly 53 enables the four sets of swinging main rods 531 to work together. The independent movement of the hinge slots 521 compensates for the spatial swing deviation of the inner sleeve 21, ensuring the movement continuity of the transmission system. The sleeve structure of the sliding ring 51 and the fixed ring 52 maintain the coaxial precision of each component, preventing mechanical jamming due to vibration offset.

[0052] In this embodiment, the elastic damping element 44 comprises a preloaded spring disposed between the bottom of the movable plate 214 and the bottom of the lower air chamber 212. When vibrations from the compressor 3 are transmitted to the inner sleeve 21, the movable plate 214 is driven by the transmission mechanism 5 to undergo vertical displacement. At this point, the preloaded spring operates in two stages: initial compression and rebound. Preloaded springs generate a constant reaction force to counteract the vibrational impact. When the amplitude exceeds a threshold, the spring's nonlinear stiffness characteristics become apparent, gradually increasing the damping strength. The movement of the movable plate 214 simultaneously alters the volume of the lower air chamber 212, forcing air through the heat dissipation slots 215 and generating fluid resistance. This aerodynamic damping effect, combined with the spring's mechanical damping, creates a composite attenuation design.

[0053] In this embodiment, the sound-absorbing layer 23 is a gradient density composite structure, comprising a micro-perforated plate 231, a glass fiber layer 232, and a polyurethane foam layer 233, arranged sequentially from the inside to the outside. When the noise from the compressor 3 penetrates the outer sleeve 22, the sound wave first contacts the micro-perforated plate 231, whose submillimeter aperture design absorbs high-frequency noise through the air viscosity effect; the sound wave then enters the medium-density glass fiber layer 232, and the interlaced fiber structure dissipates the mid-frequency sound energy through friction; finally, the residual low-frequency sound wave triggers multiple reflections in the closed-cell structure of the polyurethane foam layer 233, and gradually attenuates through the cavity resonance effect. The density gradient of the three layers of material forms a gradient acoustic impedance layer, which effectively reduces sound wave reflections and achieves continuous sound absorption from high to low frequencies. The micro-perforated plate 231 also acts as a protective layer to prevent the fiber material from falling off and contaminating the internal structure.

[0054] In this embodiment, the buffer pad is made of EPDM rubber with a hardness of 55-65HA.

[0055] In this embodiment, a detachable inspection 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.

[0056] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A compressor noise reduction device for an air conditioning system, comprising a compressor mounted within an air conditioner outdoor unit via a vibration-damping and noise-reduction mechanism, the vibration-damping and noise-reduction mechanism comprising an inner sleeve and an outer sleeve disposed outside the inner sleeve, the compressor being secured within the inner sleeve, and the outer sleeve being secured to a base of the air conditioner outdoor unit; It is characterized by: The inner sleeve and the outer sleeve are connected by a spherical structure, a spherical through-hole is provided on the spherical structure, the inner wall of the spherical through-hole forms a spherical inner surface, an annular embedded block embedded in the spherical through-hole is provided on the outer wall of the top of the inner sleeve, the outer ring surface of the annular embedded block is adapted to form a spherical outer surface, an anti-swing ring is sleeved on the inner sleeve below the annular embedded block, the anti-swing ring can contact the bottom surface of the spherical structure upward under the action of the 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-absorbing pad is provided at the connection between the two; a hollow sound insulation cavity is formed in the interior of the outer sleeve, and a sound-absorbing layer is provided on the inner wall of the outer sleeve; A partition is provided at the bottom of the inner sleeve, which divides the inner sleeve into a lower air cavity and an upper mounting cavity. The compressor is fixed in the upper mounting cavity. A movable plate is slidingly provided in the lower air cavity. The inner wall of the upper mounting cavity is evenly provided with heat dissipation grooves along the circumferential direction. The heat dissipation grooves are connected to the lower air cavity. The anti-swing ring and the movable plate are connected by a transmission mechanism. The transmission mechanism can couple the sliding of the anti-swing ring and drive the movable plate to move in the lower air cavity, so that airflow is generated in the heat dissipation grooves.

2. The compressor noise reduction device for an air conditioning system according to claim 1, characterized in that: 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 enclosure plate connected to the inner side of the outer ring edge.

3. The compressor noise reduction device for an air conditioning system according to claim 1, characterized in that: The inner surface of the sphere is formed with an upper sealing area, a middle rolling area and a lower sealing area from top to bottom. Balls are evenly arranged on the inner side surface of the middle rolling area. The balls form a rolling surface in the middle rolling area that contacts the outer surface of the sphere. A sealing gasket is arranged between the upper sealing area and the lower sealing area.

4. The compressor noise reduction device for an air conditioning system according to claim 1, characterized in that: The transmission mechanism includes a sliding ring slidably sleeved on the bottom of the inner sleeve, a fixed ring arranged between the sliding ring and the anti-swing ring, and a lever assembly connecting the sliding ring and the anti-swing ring. The outer side of the fixed ring is evenly provided with hinge grooves in the circumferential direction, and the lever assembly is arranged in each hinge groove. The lever assembly includes a swing main rod, an upper hinge rod and a lower hinge rod. The swing main rod is rotated in the hinge groove through a rotating support shaft. The top end of the swing main rod is hinged to the anti-swing ring through the upper hinge rod, and the bottom end of the swing main rod is hinged to the sliding ring through the lower hinge rod. The bottom end of the sliding ring is evenly provided with connecting rods in the circumferential direction. The bottom end of the connecting rod extends through the lower air cavity and is fixedly connected to the movable plate.

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

6. The compressor noise reduction device for an air conditioning system according to claim 1, characterized in that: 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.

7. The compressor noise reduction device for an air conditioning system according to claim 1, characterized in that: The shock-absorbing pad is made of EPDM rubber and has a hardness of 55-65HA.

8. The compressor noise reduction device for an air conditioning system according to claim 1, characterized in that: The outer wall of the outer sleeve is provided with a detachable inspection window, and a sound pressure level sensor is integrated on the inner side of the window frame to monitor the noise value in real time.

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