A combined air conditioning unit noise reduction device

Abstract

The application provides a combined air conditioning unit noise reduction device, and relates to the technical field of air conditioning unit noise reduction, which comprises a pressurizing sleeve, a plurality of control pipes are installed on the outer wall of the pressurizing sleeve at equal intervals and are in communication, a reciprocating sleeve is installed on each control pipe and is in communication, respectively, an oscillation disc is sealingly and slidably connected in the reciprocating sleeve, a communication pipe is installed on the outer wall of the pressurizing sleeve and is in communication, and a circulating sleeve is installed on the communication pipe and is in communication. The combined air conditioning unit noise reduction device solves the industry pain point that traditional air conditioning unit vibration is transmitted to the building structure to generate noise through a multilevel energy conversion mechanism. The core of the device is an energy absorption mechanism. The mechanism adopts a double energy conversion system combining air pressure change and heat energy conversion. When the air conditioning unit generates vibration during operation, the mechanical vibration is first preliminarily absorbed by the rubber block, and part of the vibration energy is converted into heat energy and dissipated in this stage.

Description

Technical Field

[0001] This invention relates to the field of noise reduction technology for air conditioning units, and more specifically, to a combined noise reduction device for air conditioning units. Background Technology

[0002] In contemporary building environments, modular air conditioning units serve as the core temperature control system for large public buildings and commercial facilities. Their operational quality directly impacts the overall living and working experience. In existing technologies, these air conditioning units are typically composed of multiple functional components, including core components such as compressors, condensers, evaporators, and fans. During normal operation, they inevitably generate mechanical vibrations of various frequencies. These vibrations mainly originate from factors such as the reciprocating motion of the compressor, the high-speed rotation of the fan, and the impact of refrigerant flow in the pipes. Due to considerations of building space and energy efficiency, these large modular air conditioning units are generally designed and installed on the rooftop platform of buildings to save valuable usable space and facilitate heat dissipation and maintenance. However, while this installation location solves the space utilization problem, it also allows the vibrations generated by the unit to be directly transmitted to the entire building through the rigid connections of the building structure, forming a complete vibration propagation path from the source to each floor of the building.

[0003] When the vibrations of the air conditioning unit are transmitted to the interior of the building through the connection point between the roof and the main structure, it triggers a series of chain reactions, resulting in multi-faceted negative impacts on the built environment. Firstly, these mechanical vibrations propagate efficiently along the building's concrete columns, beams, floor slabs, and other structural elements in the form of solid-borne sound, reaching each floor and room with almost no attenuation. Subsequently, these structural vibrations cause secondary components such as walls, ceilings, and floors to resonate, converting mechanical energy into sound energy and generating various forms of noise interference, including low-frequency booming, mid-frequency humming, or high-frequency howling. These noises create a complex sound field distribution within the building, and in certain specific situations... Location can even create noise amplification zones due to sound wave superposition. In office environments, this continuous background noise reduces work efficiency and increases employees' psychological stress and fatigue. In residential environments, it seriously affects residents' rest quality and living comfort, especially at night. Even relatively small vibration noises can lead to sleep disorders and health problems. In addition, long-term vibration transmission can also cause minor but cumulative damage to the building structure itself, accelerate the aging and loosening of decoration materials, further deteriorate the indoor acoustic environment, and form a vicious cycle of vibration-noise-damage, ultimately reducing the building's lifespan and value. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, the present invention provides a combined air conditioning unit noise reduction device to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a combined air conditioning unit noise reduction device, comprising a unit body; further comprising an energy absorption mechanism, the energy absorption mechanism comprising a pressure sleeve, wherein multiple control pipes are equally spaced and connected to the outer wall of the pressure sleeve, each control pipe is connected to a reciprocating sleeve, and a vibrating disc is slidably connected inside the reciprocating sleeve; a connecting pipe is connected to the outer wall of the pressure sleeve, and a circulating sleeve is connected to the connecting pipe; the circulating sleeve is coaxially connected to the reciprocating sleeve, and a transverse pipe is connected between two circulating sleeves; further comprising a vibration mechanism, the vibration mechanism comprising an external disc, wherein multiple external discs are provided, and multiple external discs are fixedly installed on the roof, and rubber blocks are installed on the external discs.

[0008] Preferably, the energy absorption mechanism further includes a heat dissipation pipe coaxially installed between the two oscillating discs. The heat dissipation pipe is slidably connected in a sealed manner inside the transverse pipe. An external pipe is coaxially arranged inside the heat dissipation pipe. In this design, the heat dissipation pipe acts as a connecting bridge between the two oscillating discs, realizing the synchronization of vibration transmission and ensuring that the two oscillating discs can move in a coordinated manner when the air pressure changes.

[0009] Preferably, the two ends of the external pipe are respectively connected and installed with flared mouths, and multiple heat sinks are installed at equal intervals on the inner wall of the external pipe. A water storage tank is formed between the heat sink and the external pipe. In this structural design, the flared mouths are connected and installed at both ends of the external pipe, forming an ideal inlet and outlet for air flow. The funnel-shaped design reduces airflow resistance and increases airflow, promoting forced convection heat dissipation.

[0010] Preferably, each of the reciprocating sleeves is threadedly connected to a limiting ring, and a baffle is coaxially installed inside the limiting ring. The oscillating disc is located between the baffle and the reciprocating sleeve, and the other end of the reciprocating sleeve is connected to the outside atmosphere. In this combination structure, the limiting ring is installed on the reciprocating sleeve by a threaded connection, providing an adjustable position limiting function, so that maintenance personnel can accurately control the movement range of the oscillating disc according to actual needs.

[0011] Preferably, a pressure plate is slidably connected inside the pressure sleeve, and a vibrating rod is coaxially mounted on the pressure plate. Both ends of the pressure sleeve are slidably connected to sealing rings, and the two sealing rings are slidably connected to the vibrating rods. In this core mechanism design, the slidable connection of the pressure plate inside the pressure sleeve forms a variable volume pressure chamber. When the pressure plate moves, it can change the air pressure in the space on both sides, converting mechanical vibration into gas pressure fluctuations.

[0012] Preferably, sealing sleeves are threaded to both ends of the pressure sleeve, the vibration rod is inserted into the sealing sleeve, and a compression spring is installed on the sealing sleeve. The compression spring abuts against the sealing ring. In this ingenious design, the sealing sleeves are installed at both ends of the pressure sleeve through threaded connection, forming an adjustable sealing pressure control mechanism. The threaded connection method facilitates adjustment and maintenance.

[0013] Preferably, a double-sided ring is installed at the end of the plurality of sealing sleeves away from the sealing ring, and the outer diameter of the double-sided ring is smaller than the outer diameter of the sealing sleeve.

[0014] Preferably, the vibration mechanism further includes a main spring, one end of which is fitted with a top plate and the other end of which is fitted with a bottom plate. The bottom plate is connected to the rubber block, and the top plate is mounted on the lower end surface of the unit body.

[0015] Preferably, multiple ball sleeves are installed at equal intervals on the outer plate and the top plate, and a universal ball is rotatably installed in each ball sleeve. A bottom frame is installed on the universal ball near the outer plate, and a connecting rod is installed on the universal ball near the top plate. In this omnidirectional connection design, the ball sleeves are installed at equal intervals on the outer plate and the top plate to form symmetrically distributed force transmission points, ensuring uniform transmission of vibration energy and preventing local stress concentration.

[0016] Preferably, the connecting rod is coaxially connected to the vibrating rod, and the bottom frame is fixedly installed on the outer wall of the pressure sleeve.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a noise reduction device for a combined air conditioning unit, which has the following features:

[0019] Beneficial effects:

[0020] This combined air conditioning unit noise reduction device solves the industry pain point of traditional air conditioning units transmitting vibrations to building structures and generating noise through a multi-level energy conversion mechanism. The core of the device lies in its energy absorption mechanism, which adopts a dual energy conversion system combining air pressure changes and heat energy conversion. When the air conditioning unit vibrates during operation, these mechanical vibrations are first initially absorbed by rubber blocks, and some vibration energy is converted into heat energy and dissipated at this stage. Subsequently, the vibrations that are not completely absorbed are transmitted through the main spring. In this process, the omnidirectional ball structure at multiple positions provides omnidirectional vibration capture capability, ensuring that vibrations in all directions can be effectively guided into the energy absorption system. This omnidirectional vibration capture design is particularly suitable for dealing with the complex vibration modes generated by air conditioning units under different operating conditions. Whether it is the low-frequency impact of the compressor or the high-frequency vibration of the fan, it can be accurately guided to the energy absorption mechanism.

[0021] When vibration is transmitted to the inside of the pressurizing sleeve, the pressure plate reciprocates with the vibrating rod. This movement causes periodic pressure changes in the high-pressure gas inside the pressurizing sleeve. Since the gas generates heat during compression, this physical property is utilized to convert mechanical vibration energy into heat energy. By rotating the sealing sleeve, the pressure of the compression spring on the sealing ring can be changed, thereby precisely adjusting the internal air pressure. This allows the system to adapt to vibration inputs of different intensities. This adjustable air pressure conversion system can not only effectively absorb vibration energy of various frequencies, but also be specifically optimized according to the different operating states of the air conditioning unit, providing the best noise reduction effect.

[0022] When the pressure plate reciprocates, it causes the air pressure at both ends of the pressure jacket to change alternately. This pressure fluctuation is transmitted to the reciprocating jacket through the control pipe, driving the oscillating plates on both sides to move in opposite directions. This process forms a complete gas circulation path: when the air pressure on one side increases, it pushes the oscillating plate to move outward, while simultaneously driving the oscillating plate on the other side to follow the movement, forcing the gas in the circulation jacket into the pressure jacket. During this circulation process, the gas will come into contact with the heat dissipation pipe and exchange heat, transferring the heat energy converted from vibration to the heat dissipation system. As the vibration continues, the air pressure on both sides changes alternately, and the gas flows back and forth between the circulation jacket and the pressure jacket, continuously dissipating heat from the vibration source and releasing it into the environment.

[0023] Driven by the oscillating discs on both sides, the heat pipes reciprocate, forcibly guiding outside air through the internal heat sink array via the flared structure, creating a forced convection cooling effect. At the same time, the water in the water tank formed between the heat pipes and the external pipes acts as a heat buffer medium, continuously and evenly distributing heat with the reciprocating motion of the heat pipes, preventing local overheating. This "air-water-air" triple heat transfer path improves the system's heat dissipation efficiency, ensuring that the heat energy converted by vibration can be quickly dissipated, preventing the system temperature from being too high and affecting the equipment's lifespan.

[0024] From the perspective of overall performance and application value, this combined air conditioning unit noise reduction device brings many advantages. First, its multi-level vibration absorption design weakens the vibration of the air conditioning unit before it is transmitted to the building structure, effectively reducing the noise level in the building, improving the indoor acoustic environment, and enhancing user comfort. Second, the device's closed-loop heat energy conversion mechanism not only absorbs vibration energy but also avoids the energy rebound phenomenon commonly found in traditional vibration damping devices, providing a more durable and stable noise reduction effect.

[0025] In summary, this combined air conditioning unit noise reduction device solves the core problem of noise pollution in buildings caused by the vibration transmission of air conditioning units through technical design. It provides an efficient, reliable, and durable noise reduction solution for commercial buildings, office environments, and residential spaces, and has broad application prospects and market value. The promotion and application of the device will significantly improve the acoustic comfort of the building environment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a noise reduction device for a combined air conditioning unit according to the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the external disk in this invention;

[0028] Figure 3 This is a schematic diagram of the bottom frame and connecting rod in this invention;

[0029] Figure 4 This is a cross-sectional view of the bottom frame and pressure sleeve in this invention;

[0030] Figure 5 This is a cross-sectional view of the pressure sleeve and the transverse tube in this invention;

[0031] Figure 6 This is a cross-sectional view of the heat dissipation pipe in this invention;

[0032] Figure 7 In this invention Figure 6 A schematic diagram of the cross-sectional structure;

[0033] Figure 8 This is a schematic diagram of the pressure sleeve in this invention;

[0034] Figure 9 This is a schematic diagram of the structure of the pneumatic disc in this invention.

[0035] In the diagram: 11. Unit body; 21. Pressurization sleeve; 22. Control pipe; 23. Reciprocating sleeve; 24. Vibration disc; 25. Connecting pipe; 26. Circulation sleeve; 27. Horizontal pipe; 28. Heat dissipation pipe; 29. ​​External pipe; 31. External disc; 32. Rubber block; 33. Main spring; 34. Top disc; 35. Bottom disc; 36. Ball sleeve; 37. Universal ball; 38. Bottom frame; 39. Connecting rod; 210. Trumpet mouth; 211. Heat dissipation fin; 212. Water tank; 213. Limiting ring; 214. Baffle plate; 215. Air pressure plate; 216. Vibration rod; 217. Sealing ring; 218. Sealing sleeve; 219. Compression spring; 220. Double side ring. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0038] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0039] Please see Figures 1 to 9 A noise reduction device for a combined air conditioning unit includes a unit body 11 and an energy absorption mechanism. The energy absorption mechanism includes a pressure sleeve 21, on which multiple control pipes 22 are equally spaced and connected, and a reciprocating sleeve 23 is connected to each control pipe 22. An oscillating disc 24 is slidably connected inside the reciprocating sleeve 23. A connecting pipe 25 is connected to the outer wall of the pressure sleeve 21, and a circulation sleeve 26 is connected to the connecting pipe 25. The circulation sleeve 26 is coaxially connected to the reciprocating sleeve 23. A transverse pipe 27 is connected between two circulation sleeves 26. The energy absorption mechanism also includes a heat dissipation pipe 28 coaxially installed between two oscillating discs 24. The heat dissipation pipe 28 is slidably connected inside the transverse pipe 27. An external pipe 29 is coaxially arranged inside the heat dissipation pipe 28. A flared end 210 is connected to both ends of the external pipe 29, and multiple heat dissipation fins 211 are equally spaced on the inner wall of the external pipe 29. The heat dissipation pipe 28 and... A water tank 212 is formed between the external pipes 29. Each reciprocating sleeve 23 is threadedly connected to a limit ring 213. A baffle 214 is coaxially mounted inside the limit ring 213. A vibrating disc 24 is located between the baffle 214 and the reciprocating sleeve 23. The other end of the reciprocating sleeve 23 is connected to the outside atmosphere. A pressure plate 215 is sealed and slidably connected inside the pressure sleeve 21. A vibrating rod 216 is coaxially mounted on the pressure plate 215. Both ends of the pressure sleeve 21 are sealed and slidably connected to a sealing plate 21. A sealing ring 217 is provided, and two sealing rings 217 are respectively slidably connected to the vibrating rod 216. The two ends of the pressure sleeve 21 are respectively threaded with sealing sleeves 218. The vibrating rod 216 is inserted into the sealing sleeve 218. A compression spring 219 is installed on the sealing sleeve 218 and abuts against the sealing ring 217. A double-side ring 220 is installed on the end of the multiple sealing sleeves 218 away from the sealing ring 217. The outer diameter of the double-side ring 220 is smaller than the outer diameter of the sealing sleeve 218.

[0040] When the air conditioning unit 11 is in use, it will vibrate. If the vibration is not absorbed and converted into heat, it will be transmitted, resulting in noise that affects the user. First, multiple main springs 33 at the lower end of the unit 11 are connected to rubber blocks 32. The rubber blocks 32 absorb some of the vibration energy and convert it into heat. Each main spring 33 and the side of the outer disc 31 are provided with multiple ball sleeves 36, and each ball sleeve 36 is rotatably connected to a universal ball 37. The vibration is transmitted to the pressure sleeve 21 through the multiple universal balls 37. When the vibration of the connecting rod 39 is transmitted to the vibrating rod 216, it will drive the pressure plate 215 to vibrate back and forth. After the sealing ring 217 has been compressed internally, high pressure is generated. At this time, the air pressure inside the pressure sleeve 21 is already very high. When it is necessary to adjust the air pressure inside the pressure sleeve 21, it is only necessary to rotate the sealing sleeve 218. Since the sealing sleeve 218 is threadedly connected to the pressure sleeve 21, the compression spring 219 will change the pressure on the sealing ring 217, and then the internal air pressure can be adjusted. Since the air pressure plate 215 will vibrate with the vibration rod 216, the pressure on both sides of the air pressure plate 215 will change back and forth. Since the gas will generate heat after the pressure changes, a part of the vibration energy will be converted into the heat of the gas. Therefore, a part of the vibration energy will be absorbed, thereby suppressing the vibration and completing the vibration reduction effect.

[0041] As the air pressure plate 215 causes the air pressure at both ends of the pressurizing sleeve 21 to change back and forth, when the air pressure on one side increases, the pressure is transmitted to the reciprocating sleeve 23 through the control pipe 22 on that side. The control pipe 22 on the other side is also connected to the space at the other end of the pressurizing sleeve 21. As the pressure on one side increases, the corresponding oscillating plate 24 is pushed outward, so the oscillating plate 24 on the other side will move accordingly, and push the gas in the circulation sleeve 26 on this side into the pressurizing sleeve 21. The gas in this circulation pipe will come into contact with the heat dissipation pipe 28 for heat dissipation, and as the oscillating plate 24 on the other side is pulled, the dissipated gas enters the pressurizing sleeve 21 to reduce the overall gas heat dissipation. As vibration occurs, the air pressure on the other side increases, so the heat dissipation process occurs on the other side, and it will continue back and forth with vibration. Therefore, the heat of vibration is transferred to the gas in the pressurizing sleeve 21 and then discharged through the heat dissipation pipe 28, thus completing the absorption of vibration energy and playing a role in suppressing vibration.

[0042] The gas is repeatedly drawn in and discharged within the circulation sleeves 26 on both sides to dissipate heat from the gas in the pressurization sleeve 21. As the vibration occurs, the heat dissipation pipe 28 also vibrates. Furthermore, the external air is forced to convect with the multiple heat dissipation fins 211 through the flare port 210. Since there is water in the water tank 212 for heat dissipation, the heat dissipation water also moves back and forth with the reciprocating movement of the heat dissipation pipe 28 to distribute the heat evenly. The gas entering the circulation sleeve 26 is also dissipated, and the heat is transferred to the heat dissipation water and then to the heat dissipation fins 211. Finally, the heat is dissipated through the vibration of the heat dissipation pipe 28 and the convection of the external air, thus completing the heat dissipation process.

[0043] The vibration mechanism includes an outer disk 31, of which multiple outer disks 31 are fixedly installed on the roof. Rubber blocks 32 are installed on the outer disks 31. The vibration mechanism also includes a main spring 33, with a top disk 34 installed at one end of the main spring 33 and a bottom disk 35 installed at the other end. The bottom disk 35 is connected to the rubber blocks 32. The top disk 34 is installed on the lower end face of the unit body 11. Multiple ball sleeves 36 are installed at equal intervals on the outer disks 31 and the top disk 34. A universal ball 37 is rotatably installed in each ball sleeve 36. A bottom frame 38 is installed on the universal ball 37 near the outer disk 31. A connecting rod 39 is installed on the universal ball 37 near the top disk 34. The connecting rod 39 is coaxially connected to the vibration rod 216. The bottom frame 38 is fixedly installed on the outer wall of the pressure sleeve 21.

[0044] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A noise reduction device for a combined air conditioning unit, comprising a unit body (11); characterized in that: It also includes an energy-absorbing mechanism, which includes a pressure sleeve (21). Multiple control tubes (22) are installed at equal intervals on the outer wall of the pressure sleeve (21). A reciprocating sleeve (23) is installed on each control tube (22). An oscillating disc (24) is slidably connected inside the reciprocating sleeve (23). A connecting pipe (25) is installed on the outer wall of the pressure sleeve (21). A circulating sleeve (26) is installed on the connecting pipe (25). The circulating sleeve (26) is coaxially connected to the reciprocating sleeve (23). A transverse pipe (27) is installed between two circulating sleeves (26). It also includes a vibration mechanism, which includes an outer disc (31). Multiple external disks (31) are provided, and multiple external disks (31) are fixedly installed on the roof. Rubber blocks (32) are installed on the external disks (31). The energy absorption mechanism also includes a heat dissipation pipe (28) coaxially installed between two oscillating disks (24). The heat dissipation pipe (28) is sealed and slidably connected inside the transverse pipe (27). An external pipe (29) is coaxially provided inside the heat dissipation pipe (28). The two ends of the external pipe (29) are respectively connected to and installed with flared mouths (210). Multiple heat dissipation fins (211) are installed at equal intervals on the inner wall of the external pipe (29). A water storage tank (212) is formed between the heat dissipation pipe (28) and the external pipe (29).

2. The noise reduction device for a combined air conditioning unit according to claim 1, characterized in that: Each of the reciprocating sleeves (23) is threaded with a limiting ring (213), and a baffle (214) is coaxially installed inside the limiting ring (213). The oscillating disk (24) is located between the baffle (214) and the reciprocating sleeve (23), and the other end of the reciprocating sleeve (23) is connected to the outside atmosphere.

3. The noise reduction device for a combined air conditioning unit according to claim 2, characterized in that: The pressure sleeve (21) is sealed and slidably connected to a pressure plate (215), and a vibration rod (216) is coaxially mounted on the pressure plate (215). Both ends of the pressure sleeve (21) are respectively sealed and slidably connected to a sealing ring (217), and the two sealing rings (217) are respectively sealed and slidably connected to the vibration rod (216).

4. The noise reduction device for a combined air conditioning unit according to claim 3, characterized in that: The pressure sleeve (21) has a sealing sleeve (218) threaded to both ends. The vibration rod (216) is inserted into the sealing sleeve (218). A compression spring (219) is installed on the sealing sleeve (218), and the compression spring (219) abuts against the sealing ring (217).

5. The noise reduction device for a combined air conditioning unit according to claim 4, characterized in that: Each of the sealing sleeves (218) has a double-sided ring (220) installed at one end away from the sealing ring (217), the outer diameter of the double-sided ring (220) being smaller than the outer diameter of the sealing sleeve (218).

6. The noise reduction device for a combined air conditioning unit according to claim 3, characterized in that: The vibration mechanism also includes a main spring (33), one end of which is fitted with a top plate (34), and the other end of which is fitted with a bottom plate (35). The bottom plate (35) is connected to the rubber block (32), and the top plate (34) is mounted on the lower end face of the unit body (11).

7. The noise reduction device for a combined air conditioning unit according to claim 6, characterized in that: Multiple ball sleeves (36) are installed at equal intervals on the outer disk (31) and the top disk (34). A universal ball (37) is rotatably installed in each ball sleeve (36). A bottom frame (38) is installed on the universal ball (37) near the outer disk (31), and a connecting rod (39) is installed on the universal ball (37) near the top disk (34).

8. The noise reduction device for a combined air conditioning unit according to claim 7, characterized in that: The connecting rod (39) is coaxially connected to the vibration rod (216), and the bottom frame (38) is fixedly installed on the outer wall of the pressure sleeve (21).

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