Sucker pump assembly and refrigeration equipment with same

Abstract

The utility model provides a sucking pump assembly and refrigeration equipment with the sucking pump assembly. The air extracting pump assembly comprises an air extracting pump module and a noise reduction and vibration attenuation assembly arranged outside the air extracting pump module, the noise reduction and vibration attenuation assembly comprises a metal plate and a vibration attenuation layer, and the vibration attenuation layer at least covers one side of the metal plate. By means of the arrangement, vibration and noise of the air extracting pump can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of household appliances, in particular to an air extraction pump assembly and a refrigeration device having the same. Background Art

[0002] Refrigeration equipment, such as refrigerators, is a common device used to store food in modern households. Existing refrigeration equipment generally extends the shelf life of food by providing a low-temperature environment. However, during the storage of fresh products such as fruits and vegetables, the gas environment in the storage room is also important for delaying the aging of food and reducing the spoilage rate. For example, a low vacuum environment can reduce the flow of air, reduce the spread of odors and bacteria between different food ingredients, and effectively prevent cross-contamination between food ingredients. For another example, fruits and vegetables can effectively reduce respiration in a low-oxygen environment, thereby prolonging freshness. In order to adjust the gas environment in the storage room, it is usually necessary to set up an exhaust pump to extract the gas from the storage room. However, the existing design has the following defects: the exhaust pump will generate vibration and noise during operation, affecting the user experience. Utility Model Content

[0003] The purpose of the present utility model is to provide an air extraction pump assembly and a refrigeration device having the same. By arranging a noise reduction and vibration reduction assembly on the outside of the air extraction pump module and making the vibration reduction layer of the noise reduction and vibration reduction assembly cover at least one side of the metal plate, the vibration and noise of the air extraction pump can be reduced.

[0004] To achieve the above-mentioned objectives, the present application provides an air pump assembly, which includes an air pump module and a noise reduction and vibration reduction assembly arranged outside the air pump module, the noise reduction and vibration reduction assembly includes a metal plate and a vibration reduction layer, and the vibration reduction layer covers at least one side of the metal plate.

[0005] As one of the embodiments of the present application, the air pump module includes an installation box and an air pump arranged in the installation box, the noise reduction and vibration reduction component is arranged outside the installation box, the metal plate is spaced apart from the installation box wall, the vibration reduction layer at least covers the side of the metal plate facing the installation box wall, and the vibration reduction layer is connected to the installation box wall.

[0006] As one embodiment of the present application, the vibration damping layer includes a first vibration damping layer and a second vibration damping layer, the first vibration damping layer covers the side of the metal plate facing the installation box wall, and the second vibration damping layer covers the side of the metal plate away from the installation box wall.

[0007] As one embodiment of the present application, the first vibration damping layer and the second vibration damping layer both extend toward the outside of the metal plate, and the portions of the first vibration damping layer and the second vibration damping layer located outside the metal plate are connected to each other to seal the metal plate into the vibration damping layer.

[0008] As one embodiment of the present application, the thickness of the metal plate is greater than or equal to 4 mm, and the thickness of the first vibration damping layer and the second vibration damping layer are both greater than twice the thickness of the metal plate.

[0009] As one of the embodiments of the present application, the vibration damping layer is bonded to the wall of the installation box, the vibration damping layer is bonded to the metal plate, the parts of the first vibration damping layer and the second vibration damping layer located on the outside of the metal plate are bonded to each other, the metal plate is a stainless steel plate, the vibration damping layer is IXPE foam, the vibration damping layer is interference fit with the wall of the installation box, and the interference fit amount between the vibration damping layer and the wall of the installation box is not less than 3 mm.

[0010] As one of the embodiments of the present application, the noise reduction and vibration damping assembly includes an upper noise reduction and vibration damping assembly, a lower noise reduction and vibration damping assembly, a front noise reduction and vibration damping assembly, a rear noise reduction and vibration damping assembly, a left noise reduction and vibration damping assembly, and a right noise reduction and vibration damping assembly. The metal plate of the upper noise reduction and vibration damping assembly is opposite to the upper wall of the installation box, the vibration damping layer of the upper noise reduction and vibration damping assembly is connected to the upper wall of the installation box, the metal plate of the noise reduction and vibration damping assembly is opposite to the bottom wall of the installation box, the vibration damping layer of the noise reduction and vibration damping assembly is connected to the bottom wall of the installation box, the metal plate of the front noise reduction and vibration damping assembly is opposite to the The front walls of the installation box are spaced apart from each other, the vibration damping layer of the front noise reduction and vibration damping assembly is in contact with the front wall of the installation box, the metal plate of the rear noise reduction and vibration damping assembly is spaced apart from each other, the vibration damping layer of the rear noise reduction and vibration damping assembly is in contact with the rear wall of the installation box, the metal plate of the left noise reduction and vibration damping assembly is spaced apart from each other, the vibration damping layer of the left noise reduction and vibration damping assembly is in contact with the left wall of the installation box, the metal plate of the right noise reduction and vibration damping assembly is spaced apart from each other, the vibration damping layer of the right noise reduction and vibration damping assembly is in contact with the right wall of the installation box.

[0011] As one of the embodiments of the present application, the air pump assembly includes a vibration damping member fixed in the mounting box, a receiving cavity is formed inside the vibration damping member, at least the bottom of the air pump is fixed in the receiving cavity, the vibration damping member is integrally formed by a vibration damping material, and the vibration damping material is rubber.

[0012] To achieve the above-mentioned purpose, the present application provides a refrigeration device, including a box body, a storage chamber formed in the box body, and a door body for opening and closing the storage chamber. The refrigeration device also includes an air pump assembly as described in any of the above embodiments, the storage chamber includes a cold storage chamber, and the air pump assembly is arranged in the cold storage chamber.

[0013] As one embodiment of the present application, the refrigeration equipment includes a cylinder body arranged in the refrigeration chamber, the cylinder body has a front end open to form a front opening, the refrigeration equipment includes a drawer that can be pulled out and arranged in the cylinder body, the air pump assembly is arranged between the rear wall of the cylinder body and the rear wall of the refrigeration chamber, the metal plate is spaced apart from the cylinder body wall or the refrigeration chamber wall, and the vibration damping layer is connected to the cylinder body wall or the refrigeration chamber wall.

[0014] Compared with the prior art, the present invention has the beneficial effect of reducing the vibration and noise of the vacuum pump by providing a noise reduction and vibration reduction component outside the vacuum pump module and making the vibration reduction layer of the noise reduction and vibration reduction component cover at least one side of the metal plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0016] Figure 1 This is an exploded view of an air pump assembly according to one embodiment of the present application;

[0017] Figure 2 yes Figure 1 An assembly diagram of the air pump assembly;

[0018] Figure 3 yes Figure 1 Schematic diagram of the structure of the middle air pump;

[0019] Figure 4 This is a schematic structural diagram of a refrigeration device according to one embodiment of the present application;

[0020] Figure 5 yes Figure 1 Schematic diagram of the structure of the middle muffler;

[0021] Figure 6 yes Figure 5 Schematic diagram of the structure of the middle shell body;

[0022] Figure 7 yes Figure 5 a longitudinal cross-sectional view of the silencer shown;

[0023] Figure 8 yes Figure 5 a transverse cross-sectional view of the silencer shown;

[0024] Figure 9 yes Figure 1 Assembly diagram of the air pump, vibration damper, muffler and related components;

[0025] Figure 10 yes Figure 1 Assembly diagram of the middle box body, air pump and related components;

[0026] Figure 11 yes Figure 1 Assembly diagram of the mid-exhaust pump, muffler and related components;

[0027] Figure 12 yes Figure 1 Schematic diagram of the structure of the middle vibration damping component;

[0028] Figure 13 yes Figure 12 A schematic structural diagram of the vibration damping member from another perspective;

[0029] Figure 14 yes Figure 1 Schematic diagram of the structure of the middle box body;

[0030] Figure 15 This is a schematic structural diagram of a suspension member according to an embodiment of the present application;

[0031] Figure 16 yes Figure 15 The suspension shown is Figure 1 Schematic diagram of the assembly of the air pump shown;

[0032] Figure 17 yes Figure 15 The suspension shown is Figure 1 The assembly diagram of the installation box shown;

[0033] Figure 18 yes Figure 17 The structural diagram of the box cover shown;

[0034] Figure 19 yes Figure 1 The assembly diagram of the box body, air pump, counterweight and related components is shown;

[0035] Figure 20 This is an embodiment of the present application of the noise reduction and vibration reduction component and Figure 2 The assembly diagram of the installation box shown;

[0036] Figure 21 yes Figure 20 The noise reduction and vibration reduction components shown are Figure 4 Schematic diagram of the assembly of the refrigerator compartment shown.

[0037] Among them, 1. vacuum pump; 11. pump air inlet; 12. pump air outlet; 13. first plug-in column; 14. second plug-in column; 15. second wall; 2. muffler; 20. shell; 201. shell body; 202. shell cover; 204. first wall; 205. opening; 21. muffler cavity; 22. muffler air inlet; 221. third column; 222. muffler air inlet; 23. muffler exhaust; 231. metal pipe; 2311. muffler exhaust; 232. plug-in hole; 24. pump air inlet channel; 241. first channel end; 242. second channel end; 243. first column; 244. third column; Two columns; 245, main body; 246, partition wall; 3, installation box; 31, box body; 32, box cover; 33, installation through hole; 34, fixing rib; 341, limiting plate; 342, connecting plate; 343, first fixing rib; 344, second fixing rib; 345, plug-in space; 35, limiting rib; 36, installation long hole; 37, open opening; 38, limiting column; 39, fixing hole; 4, vibration damping member; 40, accommodating cavity; 41, vibration damping bottom wall; 411, vibration damping seat; 412, vibration damping support wall; 413, vibration damping limiting wall; 414, first annular wall; 415, second annular wall; 416, first Vibration-damping rib; 417, second vibration-damping rib; 418, notch; 42, vibration-damping side wall; 421, vibration-damping limiting rib; 43, vibration-damping upper wall; 44, mounting opening; 5, suspension member; 51, connecting portion; 52, elastic arm; 521, upper elastic arm; 5211, first elastic arm; 5212, second elastic arm; 5213, third elastic arm; 5214, fourth elastic arm; 522, lower elastic arm; 523, elastic limiting protrusion; 524, free end; 53, accommodation space; 54, accommodation opening; 6, noise and vibration reduction assembly; 61, metal plate; 62, vibration-damping layer; 621, first vibration-damping layer; 622 , second vibration reduction layer; 63, upper noise reduction and vibration reduction assembly; 64, lower noise reduction and vibration reduction assembly; 65, left noise reduction and vibration reduction assembly; 66, right noise reduction and vibration reduction assembly; 7, air outlet connecting pipe; 71, air outlet pipe section; 8, air inlet connecting pipe; 9, suspension; 91, air flow channel; 10, counterweight; 104, first counterweight; 105, second counterweight; 101, foam; 102, sleeve; 103, elastic gasket; 100, vacuum pump assembly; 1000, refrigeration equipment; 1001, box body; 1002, storage room; 1003, door body; 1004, cold storage room; 1005, cylinder body; 1006, drawer. DETAILED DESCRIPTION

[0038] The following describes this patent in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit this patent, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are included within the scope of protection of this patent.

[0039] Reference Figures 1 to 3 , the present application provides an air pump assembly 100. In one embodiment of the present application, the air pump assembly 100 may include an air pump 1. The air pump 1 may also be called a vacuum pump. The air pump 1 can be used to remove gas or air from a relatively closed space, which space may be called a target air pumping space of the air pump 1. The air pump 1 can reduce the air pressure of the target air pumping space by removing the air in the target air pumping space, thereby creating a vacuum environment below atmospheric pressure, such as a low vacuum environment. The air pump 1 can also reduce the oxygen content in the target air pumping space by removing gases such as oxygen in the target air pumping space, thereby creating a low-oxygen environment.

[0040] The air pump 1 includes a pump inlet 11. The pump inlet 11 can be connected to a target air-pumping space. The air pump 1 draws gas from the target air-pumping space through the pump inlet 11.

[0041] The vacuum pump 1 may include a pump outlet 12. Gas drawn from the target vacuum space by the vacuum pump 1 may be discharged from the pump outlet 12 to the exterior of the vacuum pump 1. The pump outlet 12 may be connected to other structures to allow the discharged gas to enter the interior of the other structures, or the pump outlet 12 may be connected to the external environment to allow the gas to be discharged directly into the atmosphere.

[0042] The vacuum pump 1 may also include a drive system. This drive system may be an electric motor or a pneumatic system. The drive system is used to drive the vacuum pump 1. It drives the mechanical components of the pump through a transmission mechanism, causing the components within the pump chamber of the vacuum pump 1 to move, thereby completing the gas intake and exhaust process.

[0043] Reference Figure 4 , the present application provides a refrigeration device 1000. The refrigeration device 1000 may include a housing 1001, a storage chamber 1002 formed in the housing 1001, and a door body 1003 for opening and closing the storage chamber 1002. The refrigeration device 1000 may also include the vacuum pump assembly 100 in the present application. The target vacuuming space of the vacuum pump assembly 100 may be the storage chamber 1002, or it may be a space arranged inside the housing 1001, or the door body 1003, or the storage chamber 1002. Through the vacuum pump assembly 100, a special gas environment such as low oxygen or vacuum can be formed inside the refrigeration device 1000, thereby improving the functionality of the refrigeration device 1000 and providing a better storage environment for items stored in the refrigeration device 1000. The refrigeration device 1000 of the present application may be a refrigerator, a freezer, a commercial display cabinet, etc.

[0044] Reference Figure 4In one embodiment of the present application, the air pump assembly 100 can be disposed in the storage chamber 1002. The air pump assembly 100 is disposed in the storage chamber 1002, and the box body 1001 and the door body 1003 can seal the storage chamber 1002, thereby reducing the spread of noise from the air pump assembly 100 and improving the user experience.

[0045] Reference Figure 1 and Figure 5 In one embodiment of the present application, the vacuum pump assembly 100 may include a muffler 2. The muffler 2 may be used to reduce the noise generated when the vacuum pump 1 exhausts gas. The muffler 2 may include a housing 20. The housing 20 may be made of a durable material such as metal or plastic. The housing 20 may enclose and protect its internal structure while providing a relatively closed environment to reduce noise leakage.

[0046] Reference Figure 1 , Figures 5 to 8 , the silencer 2 may include a silencer chamber 21. A silencer chamber 21 may be formed inside the silencer 2, that is, inside the shell 20. The silencer 2 may include a silencer air inlet 22. The shell 20 may be provided with a silencer air inlet 22 connected to the silencer chamber 21. The pump outlet 12 may be connected to the silencer air inlet 22. The silencer air inlet 22 is used to allow the gas discharged from the pump outlet 12 to enter the silencer chamber 21. The silencer chamber 21 may be designed to be expansion-type relative to the silencer air inlet 22, so that the gas entering the silencer chamber 21 from the silencer air inlet can be suddenly decelerated, the sound waves can be reflected, and the energy of the sound waves can be attenuated, thereby reducing noise.

[0047] Reference Figure 1 , Figures 5 to 8 In one embodiment of the present application, the muffler 2 may include a muffler exhaust portion 23. The housing 20 may be provided with a muffler exhaust portion 23 that communicates with the muffler cavity 21. The muffler exhaust portion 23 is an airflow discharge channel of the muffler 2. The airflow entering the muffler cavity 21 from the muffler air inlet portion 22 is muffled by the muffler cavity 21 and can be discharged into the atmosphere from the muffler exhaust portion 23.

[0048] Reference Figure 1 , Figures 5 to 8 In one embodiment of the present application, the muffler exhaust portion 23 includes a metal tube 231. The inner diameter of the metal tube 231 is less than 0.7 mm. The gas entering the muffler cavity 21 from the muffler air inlet portion 22 is discharged through the metal tube 231.

[0049] The use of metal tube 231 to form an exhaust passage with a smaller diameter significantly increases the expansion ratio between the muffler chamber 21 and the exhaust duct, making the muffler 2 a reactive muffler 2 and significantly reducing the propagation of sound waves, thereby improving the muffler's effectiveness. The expansion ratio refers to the change in cross-sectional area of ​​airflow as it enters the metal tube 231 from the muffler chamber 21. The expansion ratio can be calculated by dividing the cross-sectional area of ​​the muffler chamber 21 by the cross-sectional area of ​​the metal tube 231.

[0050] The smaller inner diameter formed by the metal tube 231 can block and absorb part of the energy of the sound wave through mechanical damping and reflection, so that the noise is greatly attenuated when passing through the silencer exhaust part 23. In addition, the small-diameter metal tube 231 limits the sudden release of the airflow, eliminates the strong noise source during the exhaust process, and effectively reduces the overall noise output. Due to the small inner diameter of the metal tube 231, the airflow discharged from the silencer chamber 21 is significantly restricted when passing through the metal tube 231, resulting in a decrease in the airflow speed. The slowed airflow speed can reduce the turbulence in the airflow, thereby reducing the noise generated by the turbulence, allowing the gas to be smoothly released from the silencer chamber 21 into the atmosphere, reducing the sharpness of the noise caused by high-speed exhaust, and ensuring that no noise peaks are generated during gas discharge.

[0051] In one embodiment of the present application. The diameter of the metal tube 231 can be 0.5mm. Calculation shows that the cross-sectional area S2 of the diameter of the metal tube 231 is approximately 0.2mm2. If the cross-sectional area S1 of the silencer cavity 21 is 480mm2, then the expansion ratio of the silencer 2 is S2 / S1=2400. Through actual verification, its sound attenuation can reach more than 23dB. The larger the expansion ratio, the more conducive it is to the diffusion and reflection of sound waves, thereby reducing the energy of sound waves and thus reducing noise. The metal needle tube-type resistive silencer with a very high expansion ratio of the present application has a good sound attenuation effect, is smaller in size, and has a better cost-effectiveness.

[0052] Reference Figures 5 to 8 In one embodiment of the present application, the muffler air inlet 22 includes a muffler air inlet 222 located within the muffler cavity 21. The metal tube 231 includes a muffler air outlet 2311 located within the muffler cavity 21. The muffler air inlet 222 is oriented perpendicular to the muffler air outlet 2311. For example, the muffler air inlet 222 may be oriented upward, and the muffler air outlet 2311 may be oriented leftward or rightward, etc.

[0053] Since the silencer air inlet 222 and the silencer exhaust port 2311 are oriented vertically, the airflow will not flow directly to the silencer exhaust port 2311 after entering the silencer chamber 21 from the silencer air inlet 222, but will need to undergo a certain path change and diffusion, forcing the sound waves to be reflected and scattered multiple times in the silencer chamber 21, thereby increasing the path of the sound waves and the time they spend in the wall of the silencer chamber 21, so that the kinetic energy of the airflow can be further consumed, and the energy of the sound waves can be further reduced, thereby reducing the propagation of noise. In addition, this design can also improve the stability of the airflow in the silencer 2 and avoid turbulence causing additional noise.

[0054] Reference Figures 5 to 8 In one embodiment of the present application, the height of the silencer air inlet 222 is higher than the bottom surface of the silencer cavity 21. The height of the silencer exhaust port 2311 is higher than the bottom surface of the silencer cavity 21.

[0055] When the vacuum pump assembly 100 is set in the refrigeration equipment 1000, if the vacuum pump 1 extracts air from the storage room 1002 and other spaces, the airflow will carry a certain amount of moisture, causing the gas discharged by the vacuum pump 1 into the silencer chamber 21 to also carry a certain amount of moisture. After a period of time, water may accumulate in the silencer chamber 21. Since the temperature inside the refrigeration equipment 1000 is relatively low, if the water in the silencer chamber 21 enters the silencer air inlet 22 or the silencer exhaust 23, it is likely to cause the silencer air inlet 22 or the silencer exhaust 23 to freeze, thereby causing the silencer air inlet 22 and the silencer exhaust 23 to be blocked. This design ensures that there is no risk of water accumulation in the silencer air inlet 22 and the silencer exhaust 23 of the muffler 2 when the vacuum pump 1 is running, thereby avoiding freezing of the silencer air inlet 22 and the silencer exhaust 23.

[0056] In addition, the silencer air inlet 222 and the silencer exhaust port 2311 are designed to be higher than the bottom surface, which can also reduce the accumulation of impurities in the silencer air inlet 22 and the silencer exhaust 23. This helps to keep the silencer air inlet 22 and the silencer exhaust 23 clean, and reduce the air flow instability and additional noise caused by the accumulation of impurities. This design can extend the service life of the muffler 2 and reduce the maintenance frequency.

[0057] Reference Figure 5 、 Figure 6 、 Figure 8In an embodiment of the present application, the wall of the shell 20 is formed with a plug hole 232 communicating with the sound attenuation cavity 21. A metal pipe 231 is plugged into the plug hole 232. The shell 20 can be injection molded from plastic. During the injection molding process of the shell 20, the plug hole 232 of the sound attenuation inlet portion 22, the sound attenuation cavity 21, and the sound attenuation outlet portion 23 are simultaneously formed. After the metal pipe 231 with a small diameter is formed by metal processing, it is plugged into the plug hole 232 of the wall of the shell 20, thereby forming the sound attenuation outlet portion 23 of the sound attenuator 2.

[0058] The inner diameter of the plug hole 232 only needs to match the outer diameter of the metal pipe 231, which reduces the difficulty of forming a small hole diameter in the injection molding process. The use of metal processing to form the metal pipe 231 ensures that the metal pipe 231 has a small diameter. The plug-in design of the metal pipe 231 also makes it easy to replace the metal pipe 231 if it is worn out or damaged during long-term use without replacing the entire sound attenuator 2, thereby increasing the convenience of maintenance, reducing maintenance costs, and improving the durability of the sound attenuator 2.

[0059] Referring to Figure 1 , Figures 5 to 8 In another embodiment of the present application, a manufacturing method of the air suction pump assembly 100 is provided. The manufacturing method of the air suction pump assembly 100 includes the following steps.

[0060] S1: The metal pipe 231 is arranged in a mold cavity of an injection mold used for injection molding the shell 20 of the sound attenuator 2.

[0061] S2: Liquid plastic is injected into the mold cavity, and the liquid plastic at least wraps part of the outer wall of the metal pipe 231.

[0062] S3: After the plastic in the mold cavity is cooled and solidified, the shell 20 with the metal pipe 231 fixed is obtained by demolding.

[0063] Unlike the above-mentioned embodiment in which the metal pipe 231 is plugged into the plug hole 232 of the shell 20. By directly wrapping the outer wall of the metal pipe 231 with liquid plastic in the injection mold, the metal pipe 231 can be firmly combined with the shell 20 after the plastic is cooled. This integrated molding fixation method ensures a tight fit between the metal pipe 231 and the shell 20, avoiding the loosening or leakage problems that may occur in traditional methods. This combination method has high mechanical strength and can withstand stress and vibration during long-term use. At the same time, this method simplifies the assembly steps, improves production efficiency, and avoids the problems of loosening and sealing failure that may occur in traditional fixation methods. Therefore, this manufacturing method can significantly improve the performance and reliability of the air suction pump assembly 100 or the sound attenuator 2, and is suitable for environments that require high sealing and long-term stable operation.

[0064] Referring to Figure 1 , Figure 5 , Figure 6 , Figure 8 In an embodiment of the present application, the metal pipe 231 is made of stainless steel. In other embodiments, the metal pipe 231 can also be made of copper, aluminum or other metal.

[0065] Referring to Figure 1 , Figure 2 , Figure 5 , Figure 9 In an embodiment of the present application, the air extraction pump assembly 100 comprises a sleeve 102 outside the housing 20. The sleeve 102 is sleeved on the metal pipe 231. The metal pipe 231 extends out of the housing 20. The sleeve 102 can be made of non-metallic material such as plastic. The sleeve 102 can protect the metal pipe 231 from damage and deformation.

[0066] Referring to Figure 1 , Figures 5 to 8 In an embodiment of the present application, the muffler 2 is provided with a pump air inlet passage 24. The pump air inlet passage 24 comprises a first passage end 241 and a second passage end 242. The first passage end 241 is used to communicate with the target air extraction space of the air extraction pump 1. The second passage end 242 is used to connect with the pump air inlet part 11.

[0067] Directly integrating the pump air inlet passage 24 on the muffler 2 helps to reduce the number of pipes and connecting parts, making the overall structure of the air extraction pump assembly 100 more compact. Integrating the pump air inlet passage 24 and the muffler 2 together also helps to reduce the vibration and resonance problems caused by external connecting pipes. If the external connecting pipes are too long or lack proper support, they may vibrate when the air extraction pump 1 is running. These vibrations not only affect the stability of the equipment, but also can become an additional source of noise. By integrating the pump air inlet passage 24 on the muffler 2, external connecting pipes can be minimized to reduce vibration and noise. The integrated design of the muffler 2 and the air inlet passage helps to limit the vibration and noise generated by the pump within the muffler 2, further reducing the spread of noise and resonance effects. In addition, integrating the pump air inlet passage 24 with the muffler 2 can also reduce the length and degree of tortuosity of the air inlet pipe of the air extraction pump 1, providing a more direct air flow passage 91, reducing the formation of vortex and turbulent flow, and maintaining stable air intake flow.

[0068] Referring to Figure 1 , Figures 5 to 8In one embodiment of the present application, the housing 20 includes a housing body 201. A silencer chamber 21 is formed inside the housing body 201. A main body 245 of the pump air inlet channel 24 is formed inside the housing body 201. A partition wall 246 is also formed inside the housing body 201, separating the silencer chamber 21 and the main body 245 of the pump air inlet channel 24. The main body 245 of the pump air inlet channel 24 passes through the housing body 201. The outer wall of the housing body 201 extends outward from one end of the main body 245 of the pump air inlet channel 24 to form a first column 243, and extends outward from the other end of the main body 245 of the pump air inlet channel 24 to form a second column 244. A first channel end 241 communicating with the main body 245 of the pump air inlet channel 24 is formed inside the first column 243. A second channel end 242 communicating with the main body 245 of the pump air inlet channel 24 is formed inside the second column 244.

[0069] By integrating the silencer cavity 21 and the main body 245 of the pump air inlet channel 24 inside the shell body 201, the overall structure of the muffler 2 can be made more compact, the volume of the component is reduced, the space occupied is reduced, and the sealing performance of the vacuum pump component 100 during the air intake process can be enhanced, reducing the possibility of gas leakage.

[0070] A partition wall 246 formed within the housing body 201 serves to isolate the muffler chamber 21 from the main portion 245 of the pump intake passage 24. This partition wall 246 not only structurally strengthens the overall rigidity of the housing 20 but also effectively prevents interference between the various chambers, ensuring the independent functionality of each component. This helps maintain the system's airtightness while reducing the transmission of noise and vibration between the various chambers, enhancing noise control effectiveness and ensuring the efficient operation of the muffler 2.

[0071] First column 243 and second column 244 respectively form first channel end 241 and second channel end 242 of pump inlet channel 24. This design optimizes the airflow input and output paths. Through the rational layout of the columns and channels, airflow enters and exits pump inlet channel 24 more smoothly, eliminating unnecessary bends and obstructions, reducing airflow turbulence, improving airflow stability, and further enhancing pump efficiency.

[0072] By integrating the pump air inlet channel 24, the silencer chamber 21, etc. into the shell 20 of the silencer 2, unified materials and manufacturing processes can be used for production, especially the use of injection molding technology, which can simplify the manufacturing process, reduce production costs, improve the matching accuracy between components, and improve the overall performance and reliability of the equipment.

[0073] Reference Figure 1 and Figure 9In one embodiment of the present application, the pump outlet 12 is spaced apart from and opposed to the muffler inlet 22. The pump inlet 11 is spaced apart from and opposed to the second channel end 242. The air extraction pump assembly 100 includes an outlet connecting pipe 7 connecting the pump outlet 12 and the muffler inlet 22. The air extraction pump assembly 100 includes an inlet connecting pipe 8 connecting the pump inlet 11 and the second channel end 242.

[0074] The design is such that the pump outlet 12 and the silencer inlet 22 are spaced apart and opposed to each other, and the pump inlet 11 and the second channel end 242 are spaced apart and opposed to each other, and the various components are connected by connecting pipes. This design avoids bending and crossing of the connecting pipes, so that the connection points of each connecting pipe maintain good accessibility, and technicians can easily remove or install each connecting pipe during installation and subsequent maintenance. This design also provides a clear airflow path, ensuring that the pump inlet and outlet channels are clearly separated, reducing the complexity during installation and the risk of incorrect pipe connection. The spaced-apart design can also ensure that the connecting pipes remain stable after installation, avoiding damage or falling off of the pipes due to pipe swinging or vibration caused by excessive length of the pipes.

[0075] Reference Figure 1 and Figure 9 In one embodiment of the present application, the air outlet connecting pipe 7 is an elastic tube. The air inlet connecting pipe 8 is an elastic tube. The elastic tube can effectively absorb the vibration generated by the vacuum pump assembly 100 during operation, which helps to improve the stability of the overall system. The flexible material properties of the elastic tube also reduce the mechanical resonance that may be generated during the operation of the vacuum pump 1, thereby extending the service life of the pipeline and reducing the vibration and noise of the vacuum pump assembly 100. The elastic tube can better fit the connecting parts during installation, and the deformable properties of its material allow for easier tight fit during connection, so as to ensure the air tightness of the connection between the air outlet connecting pipe 7, the air inlet connecting pipe 8 and the vacuum pump 1 and the muffler 2.

[0076] Reference Figure 1 、 Figure 3 、 Figure 5 、 Figure 9 In one embodiment of the present application, the housing 201 includes a first wall 204 adjacent to the vacuum pump 1. The vacuum pump 1 includes a second wall 15 spaced apart from the first wall 204. The second column 244 and the muffler inlet 22 are both disposed on the first wall 204. The pump inlet 11 and the pump outlet 12 are both disposed on the second wall 15.

[0077] The pump inlet 11 and the pump outlet 12 of the vacuum pump 1 are both arranged on the same wall surface, and this wall surface is the wall surface opposite to the wall surface of the shell body 201. This can reduce the length of the air inlet connecting pipe 8 and the air outlet connecting pipe 7, facilitate the connection between the pump outlet 12 and the silencer air inlet 22, and facilitate the connection between the pump inlet 11 and the pump inlet channel 24. This layout not only simplifies the piping installation and maintenance of the vacuum pump assembly 100, optimizes airflow management and system layout, but also improves the overall efficiency and performance of the equipment, reduces airflow interference, and improves the sealing and maintainability of the system.

[0078] Reference Figure 1 、 Figure 2 、 Figure 10 In one embodiment of the present application, the air pump assembly 100 includes a mounting box 3. The air pump 1 is disposed within the mounting box 3. The muffler 2 is disposed within the mounting box 3. The housing 20 of the muffler 2 is disposed within the mounting box 3. The mounting box 3 is enclosed. By placing both the air pump 1 and the muffler 2 within the mounting box 3, the mounting box 3 can be utilized to further isolate the vibration of the air pump 1 and the transmission of sound waves, thereby reducing the vibration and noise of the air pump assembly 100.

[0079] Reference Figure 1 、 Figure 2 and Figure 9 In one embodiment of the present application, a mounting hole 33 is formed in the wall of the mounting box 3 to mate with the metal tube 231. One end of the metal tube 231 is inserted into the mounting hole 33. Gas within the silencing chamber 21 is discharged to the outside of the mounting box 3 through the metal tube 231. By inserting the metal tube 231 into the mounting hole 33 in the wall of the mounting box 3, the gas within the silencing chamber 21 can be discharged to the outside of the mounting box 3.

[0080] Reference Figure 1 、 Figure 2 and Figure 9 In one embodiment of the present application, the sleeve 102 is at least partially disposed within the mounting hole 33. One end of the sleeve 102 may abut against the outer wall of the housing 20, while the other end may be flush with or longer than the end of the metal tube 231. By completely enclosing the sleeve 102 around the outer wall of the metal tube 231, the metal tube 231 can be prevented from colliding with the wall of the mounting box 3 when inserted into the mounting hole 33, thereby better protecting the metal tube 231 and preventing damage or deformation.

[0081] Reference Figure 1 、 Figure 2 、 Figure 9 、 Figure 10In an embodiment of the present application, the mounting box 3 comprises a box body 31. The box body 31 has an open opening 37 at the upper end. The mounting box 3 comprises a box cover 32 for opening and closing the open opening 37. The air suction pump 1 is arranged in the box body 31. The muffler 2 is arranged in the box body 31. The muffler 2 can be arranged only in the lower part of the box body 31, and the upper part of the muffler 2 can be arranged in the box cover 32. The muffler 2 is arranged above the air suction pump 1. The shell 20 is arranged in the box body 31. The shell 20 is arranged above the air suction pump 1. The bottom wall of the muffler 2, i.e. the bottom wall of the shell body 201, is the first wall 204. The top wall of the air suction pump 1 is the second wall 15.

[0082] Referring to Figure 1 In the present application, the upward and downward direction can refer to the height direction of the mounting box 3, the front and rear direction can refer to the thickness direction of the mounting box 3, and the left and right direction can refer to the width direction of the mounting box 3. The open opening 37 of the box body 31 faces upward.

[0083] Referring to Figure 1 In an embodiment of the present application, an elastic gasket 103 is arranged between the top wall of the shell 20 and the box cover 32. The box cover 32 or the top wall of the shell 20 is formed with a mounting groove for mounting the elastic gasket 103. By arranging the elastic gasket 103, the vibration and noise of the air suction pump 1 can be reduced.

[0084] Referring to Figure 1 , Figure 2 , Figure 5 , Figure 6 In an embodiment of the present application, the first column 243 is arranged on the top wall of the shell body 201. The muffler exhaust part 23 is arranged on the side wall of the shell body 201. The side wall of the box cover 32 at least partially covers the side wall of the shell body 201. The side wall of the box cover 32 is formed with a mounting through hole 33 matched with the metal pipe 231. The metal pipe 231 is inserted into the mounting through hole 33. The box cover 32 is formed with a mounting long hole 36 matched with the first column 243. The first column 243 extends to the outside of the mounting box 3 through the mounting long hole 36. The length direction of the mounting long hole 36 is consistent with the extension direction of the metal pipe 231. The hole diameter of the mounting long hole 36 close to the metal pipe 231 is smaller than the hole diameter of the mounting long hole 36 away from the metal pipe 231.

[0085] During installation, the muffler 2 can be moved upward relative to the box cover 32 so that the first column 243 passes through the larger portion of the mounting slot 36. When the metal tube 231 is opposite the mounting through-hole 33 on the side wall of the box cover 32, the muffler 2 can be moved toward the mounting through-hole 33 so that the metal tube 231 is gradually inserted into the mounting through-hole 33. During this process, the first column 243 gradually moves from the larger portion of the mounting slot 36 to the smaller portion until the outer wall of the first column 243 abuts the inner wall of the smaller portion of the mounting slot 36. By providing the mounting slot 36 with a diameter that varies along its length, it is possible to facilitate the insertion of the first column 243 from the larger portion of the mounting slot 36. Subsequently, as the first column 243 moves, the diameter of the mounting slot 36 decreases, allowing for better cooperation with the first column 243 and achieving the fixation of the first column 243.

[0086] The vacuum pump 1 is installed in the box body 31. The upper ends of the air inlet connecting pipe 8 and the air outlet connecting pipe 7 are respectively connected to the silencer air inlet portion 22 and the second column 244 on the bottom wall of the muffler 2. The assembly consisting of the muffler 2, the box cover 32, the air inlet connecting pipe 8, and the air outlet connecting pipe 7 can be moved downward so that the lower ends of the air inlet connecting pipe 8 and the air outlet connecting pipe 7 are respectively connected to the pump air inlet portion 11 and the pump air outlet portion 12 on the top wall of the vacuum pump 1, and then the box cover 32 can be connected to the box body 31 by connecting parts such as screws. A box seal can be provided between the box cover 32 and the box body 31. The box seal can seal the gap between the box cover 32 and the box body 31 to reduce the vibration and noise of the vacuum pump 1 from being transmitted outward.

[0087] Reference Figure 1 、 Figure 3 、 Figure 5 、 Figure 9 The pump outlet portion 12 includes a first plug-in column 13 extending from the wall of the vacuum pump 1 toward the silencer inlet portion 22. An air outlet channel is formed inside the first plug-in column 13. The silencer inlet portion 22 includes a third column 221 extending from the wall of the shell 20 toward the pump outlet portion 12. An air inlet channel is formed inside the third column 221. One end of the air outlet connecting pipe 7 is plugged into the third column 221, and the other end is plugged into the first plug-in column 13. The air outlet connecting pipe 7 can limit the movement of the vacuum pump 1 toward the silencer inlet portion 22, and limit the circumferential movement of the vacuum pump 1 toward the first plug-in column 13, thereby reducing the vibration of the vacuum pump 1.

[0088] The pump air inlet portion 11 includes a second plug-in column 14 extending from the wall of the air pump 1 toward the second column 244. An air inlet passage is formed inside the second plug-in column 14. The second column 244 extends from the wall of the shell 20 toward the pump air inlet portion 11. One end of the air intake connecting pipe 8 is plugged into the second column 244, and the other end is plugged into the second plug-in column 14. The air intake connecting pipe 8 can limit the movement of the air pump 1 toward the second column 244, and limit the circumferential movement of the air pump 1 toward the second plug-in column 14, thereby reducing the vibration of the air pump 1.

[0089] The first plug-in post 13 and the second plug-in post 14 are both mounted on the top wall of the air pump 1 and extend upward. The second column 244 and the third column 221 are both mounted on the bottom wall of the muffler 2 and extend downward. The first plug-in post 13 and the third column 221 are located on the same axis and spaced opposite each other. The second plug-in post 14 and the second column 244 are also located on the same axis and spaced opposite each other.

[0090] The upper end of the outlet connecting pipe 7 is plugged into the outside of the third column 221 and can abut the bottom wall of the muffler 2. The lower end of the outlet connecting pipe 7 is plugged into the outside of the first plug-in column 13 and can abut the top wall of the air pump 1. The outlet connecting section can limit the upward position of the air pump 1 and also limit the circumferential position of the front, back, left, and right sides.

[0091] The upper end of the air intake connecting pipe 8 is plugged into the outside of the second column 244, and the upper end of the air intake connecting pipe 8 can abut the bottom wall of the muffler 2. The lower end of the air intake connecting pipe 8 is plugged into the outside of the second plug-in column 14, and the lower end of the air intake connecting pipe 8 can abut the top wall of the air pump 1. The air intake connecting pipe 8 can limit the air pump 1 upward, as well as the circumferential position of the front, back, left, and right. The air intake connecting pipe 8 and the air outlet connecting pipe 7 can better limit the position of the air pump 1, reducing the vibration and noise of the air pump 1.

[0092] Reference Figure 1 , Figures 5 to 7 In one embodiment of the present application, the muffler 2 may include a shell cover 202. An opening may be formed at the upper end of the shell body 201. The shell cover 202 may be used to open and close the opening at the upper end of the shell body 201. The pump air intake channel 24 may be fixed to the shell body 201. The shell cover 202 may be formed with a clearance opening 205 that cooperates with the first column 243, and the first column 243 may be inserted into the clearance opening 205. A shell seal may be provided between the shell cover 202 and the shell body 201. The shell seal may seal the gap between the shell cover 202 and the shell body 201, thereby improving the sealing performance of the muffler 2 and reducing noise.

[0093] Reference Figure 1 、 Figure 9 and Figure 11In one embodiment of the present application, the outlet connecting pipe 7 includes an outlet pipe section 71. The air inlet end of the outlet pipe section 71 is located below its outlet end. The air extraction pump assembly 100 also includes a suspension member 9 movably disposed within the outlet pipe section 71. When the air extraction pump 1 is discharging air, the suspension member 9 is suspended within the outlet pipe section 71 under the action of the airflow in the outlet pipe section 71.

[0094] When the vacuum pump 1 is activated, the airflow from the pump outlet 12 to the silencer inlet 22 causes the suspended element 9 to rise and suspend in the outlet pipe section 71. At this point, the kinetic energy of the airflow is partially converted into the potential energy of the suspended element 9. This energy conversion consumes the energy of the airflow, reducing noise and vibration. The suspended element 9 suspended in the outlet pipe section 71 also creates a certain amount of aerodynamic resistance, increasing the damping effect on the gas flow and reducing the airflow velocity in the outlet pipe section 71. This helps to mitigate the impact and fluctuations of the airflow, thereby reducing vibration and noise.

[0095] As the airflow velocity decreases, the pressure within the outlet pipe section 71 and the muffler chamber 21 also decreases. Lower pressure effectively reduces airflow impact and gas vortexes, further reducing noise from the gas flow while also alleviating the vibration impact on surrounding structures. As the pressure within the outlet pipe section 71 and the muffler chamber 21 decreases, the overall hardness of the outlet pipe section 71 decreases. The increased flexibility of the outlet pipe section 71 effectively weakens the vibration transmission path, reducing sensitivity to vibration transmission, enabling better absorption and mitigation of vibrations, and reducing the transmission of vibrations to other parts.

[0096] The suspension 9 is provided in the outlet pipe section 71, which not only converts the energy of the airflow into the potential energy of the suspension 9, but also effectively reduces the vibration and noise transmission of the vacuum pump 1 by increasing the airflow damping, reducing the pressure and the hardness of the outlet pipe section 71.

[0097] Reference Figure 1 、 Figure 9 and Figure 11 In one embodiment of the present application, an air flow channel 91 for air circulation is formed inside the suspension 9. The existence of the air flow channel 91 can disperse and slow down the speed and pressure of the air flow, thereby further reducing the vibration and noise caused by the air flow.

[0098] Reference Figure 1 、 Figure 9 and Figure 11 In one embodiment of the present application, an airflow space is provided between the outer wall of the suspension member 9 and the inner wall of the air outlet pipe section 71. The outer diameter of the suspension member 9 is smaller than the inner diameter of the air outlet pipe section 71.

[0099] The suspending member 9 can be tubular. The extending direction of the tubular suspending member 9 can be consistent with the extending direction of the air outlet pipe section 71, and the pipe length of the suspending member 9 can be greater than the inner diameter of the air outlet pipe section 71, so as to avoid the suspending member 9 rotating up and down in the air outlet pipe section 71 under the action of the air flow. The air outlet pipe section 71 is sleeved outside the tubular suspending member 9.

[0100] By leaving the air flow space between the air outlet pipe section 71 and the suspending member 9, the physical contact between the suspending member 9 and the air outlet pipe section 71 is reduced, and the direct transmission of vibration is reduced, which can effectively reduce the vibration transmission caused by mechanical contact, thereby improving the vibration reduction effect of the system and reducing the vibration and noise during the operation of the air pump 1. The difference between the outer diameter and the inner diameter of the suspending member 9 enables the air flow to be uniformly distributed around the suspending member 9, and the pressure difference of the air flow helps to balance the posture of the suspending member 9, so that the suspended position of the suspending member 9 in the air flow space is maintained, thereby stabilizing the suspending member 9 and avoiding the shaking or deviation of the suspending member 9 caused by uneven air flow.

[0101] Referring to Figure 1 , Figure 9 and Figure 11 , in an embodiment of the present application, the suspending member 9 can slide up and down between the air inlet end and the air outlet end of the air outlet pipe section 71. The inner diameter of the air inlet end of the air outlet pipe section 71 is smaller than the outer diameter of the suspending member 9. The inner diameter of the air outlet end of the air outlet pipe section 71 is smaller than the outer diameter of the suspending member 9.

[0102] The inner diameters of the air inlet end and the air outlet end of the air outlet pipe section 71 are both smaller than the outer diameter of the suspending member 9, which ensures that the suspending member 9 can only slide between the two ends and cannot slide out of the pipe section, effectively limiting the movement range of the suspending member 9 and avoiding the problems of disengagement or jamming. Since the suspending member 9 can slide up and down in the air outlet pipe section 71, the position of the suspending member 9 can be automatically adjusted according to the change of the air flow pressure. When the air flow increases, the suspending member 9 moves upward, and when the air flow decreases, the suspending member 9 moves downward. This flexible movement helps to buffer the air flow impact and reduce the transmission of vibration, while reducing the air flow noise.

[0103] The specific weight and size of the suspending member 9 can be determined according to the air flow speed of the pump air outlet part 12 flowing to the sound attenuation air inlet part 22, etc.

[0104] Referring to Figure 1 , Figure 9 and Figure 11In one embodiment of the present application, the suspension 9 is made of an elastic material. The suspension 9 made of elastic material can effectively absorb and buffer the impact force generated by airflow or vibration. When the suspension 9 is pushed or vibrated by the airflow, the elastic material can absorb part of the energy by deformation, reduce the transmission of mechanical vibration, and thus reduce the overall vibration of the vacuum pump assembly 100, greatly improving the vibration reduction and noise reduction effect. The soft nature of the elastic material also reduces the direct hard contact between the suspension 9 and other components, reduces the wear between mechanical components, which not only improves the durability of the suspension 9, but also protects the air outlet pipe section 71 and other related components, and extends the service life of the entire vacuum pump assembly 100. The air outlet connecting pipe 7 can be an elastic tube as mentioned above.

[0105] Reference Figure 1 、 Figure 9 and Figure 11 In one embodiment of the present application, the outlet pipe section 71 is arranged vertically or obliquely. The outlet connecting pipe 7 can extend vertically or obliquely upward as a whole, or only the outlet pipe section 71 can extend vertically or obliquely upward. Preferably, the outlet connecting pipe 7 extends vertically and upward as a whole, and the outlet pipe section 71 is equivalent to the outlet connecting pipe 7.

[0106] Reference Figure 1 、 Figure 9 and Figure 11 In one embodiment of the present application, the silencer air inlet 22 is located on the pump outlet 12. The vacuum pump assembly 100 includes a mounting box 3. The mounting box 3, the vacuum pump 1, and the muffler 2 can be arranged as described above. That is, the mounting box 3 includes a box body 31, the air inlet end of the box body 31 has an open opening 37, the mounting box 3 includes a box cover 32 for opening and closing the open opening 37, the vacuum pump 1 and the muffler 2 are both arranged in the box body 31, the muffler 2 is located above the vacuum pump 1, the silencer air inlet 22 is arranged on the bottom wall of the muffler 2, the pump outlet 12 is arranged on the top wall of the vacuum pump 1, and the silencer air inlet 22 and the pump outlet 12 are spaced apart and relative to each other.

[0107] Reference Figure 1 、 Figures 5 to 7 、 Figure 9 In one embodiment of the present application, the length and radial dimensions of the outlet connecting pipe 7 are matched with the volume of the muffler chamber 21 to form a plug-in Helmholtz resonator.

[0108] The Helmholtz resonator not only absorbs noise but also effectively reduces vibration caused by airflow pulsation. When air flows through the outlet connection pipe 7, the in-tube Helmholtz resonator suppresses pressure fluctuations caused by airflow disturbances, reducing the vibration transmission from airflow impact to the system structure, thereby improving the vibration reduction effect.

[0109] By adjusting the length and radial dimensions of the outlet connecting pipe 7 and the volume of the silencer chamber 21, the resonant frequency of the intubation-type Helmholtz resonator formed by the outlet connecting pipe 7 and the silencer chamber 21 can be flexibly adjusted to optimize the processing for different noise frequencies and vibrations, thereby improving the noise and vibration suppression capability of the system.

[0110] The parameter design of the air outlet connecting pipe 7 and the muffler cavity 21 can satisfy the following formula:

[0111]

[0112] Where f is the resonant frequency (Hz) that the intubation Helmholtz resonator formed by the outlet connecting pipe 7 and the silencer chamber 21 needs to reach. The intubation Helmholtz resonator formed by the outlet connecting pipe 7 and the silencer chamber 21 can be consistent with the noise frequency generated by the vacuum pump 1. When the noise frequency is consistent with the resonant frequency of the Helmholtz resonator, the sound wave passes through the neck of the resonator, i.e. the outlet connecting pipe 7, and excites the vibration of the air in the silencer chamber 21. This vibration process converts the sound energy into heat energy or dissipates it, reducing the energy of the noise and achieving a noise reduction effect. v refers to the speed of sound, which is usually 343m / s. A is the cross-sectional area of ​​the outlet connecting pipe 7. V refers to the volume of the silencer chamber 21. L is the effective length of the outlet connecting pipe 7. The effective length usually includes the actual length of the outlet connecting pipe 7 and the acoustic effect correction length near the opening of the outlet connecting pipe 7. Usually, a part of the opening radius of the outlet connecting pipe 7 (usually 0.61 times the opening radius) is used as the correction amount. By adjusting the cross-sectional area and length of the outlet connecting pipe 7 and the volume of the muffler chamber 21 , a plug-in Helmholtz resonator with a special resonance frequency can be formed to absorb noise of a specific frequency of the air pump 1 .

[0113] Reference Figure 1 、 Figures 5 to 7 、 Figure 9 In one embodiment of the present application, the silencer 2 constituting the in-tube Helmholtz resonator may be provided with a silencer exhaust portion 23 connected to the silencer cavity 21. The silencer exhaust portion 23 includes a metal tube 231. The inner diameter of the metal tube 231 is less than 0.7 mm. The gas in the silencer cavity 21 is discharged through the metal tube 231. The silencer exhaust portion 23 and the metal tube 231 of the silencer 2 may be arranged as described above. Since the diameter of the metal tube 231 is relatively small, the silencer cavity 21 is approximately closed, and the exhaust has a relatively low influence on the resonance of the silencer cavity 21 of the in-tube Helmholtz resonator.

[0114] Reference Figure 1 、 Figure 9 、 Figures 12 to 14In one embodiment of the present application, the air pump assembly 100 further includes a vibration damper 4. The vibration damper 4 is fixed within the mounting box 3. A receiving cavity 40 is formed within the vibration damper 4. The vibration damper 4 is integrally formed from a vibration damping material. At least the bottom of the air pump 1 is fixed within the receiving cavity 40.

[0115] The design of the vibration damper 4 and the accommodating cavity 40 of the air pump 1 makes the installation of the pump easier, without the need for additional complex fasteners. The pump can be directly placed in the vibration damper 4 for fixation, thereby improving installation efficiency. Since the vibration damper 4 is integrally formed with the accommodating cavity 40, the accommodating cavity 40 can not only fix the air pump 1, but also prevent the air pump 1 from directly contacting the mounting box 3. This simplifies the installation structure, makes the structure compact, reduces the space occupied, is low-cost, and is easy to process. It can effectively absorb and attenuate the vibration generated by the air pump 1 during operation, thereby reducing the transmission of vibration to the mounting box 3 and avoiding the adverse effects of vibration on other components of the system.

[0116] Reference Figure 1 、 Figure 9 、 Figures 12 to 14 In one embodiment of the present application, the vibration damping member 4 includes a vibration damping bottom wall 41 abutting against the bottom wall of the air pump 1. The vibration damping bottom wall 41 is provided with a vibration damping seat 411 protruding downward. The vibration damping seat 411 abuts against the bottom wall of the installation box 3.

[0117] The dual design of the vibration-damping bottom wall 41 and the vibration-damping seat 411 helps isolate vibration sources. During operation, the vibration of the vacuum pump 1 is first partially absorbed by the vibration-damping bottom wall 41. The remaining vibration is then further attenuated when transmitted to the bottom wall of the mounting box 3 through the vibration-damping seat 411. This layered vibration-damping structure significantly reduces vibration transmission. The protruding design of the vibration-damping seat 411 provides better and more stable support for the vacuum pump 1 while maintaining vibration damping performance, preventing system resonance caused by accumulated vibration.

[0118] Reference Figure 1 、 Figure 9 、 Figures 12 to 14 In one embodiment of the present application, the vibration-damping seat 411 includes a vibration-damping support wall 412. The vibration-damping support wall 412 abuts the bottom wall of the mounting box 3. The vibration-damping seat 411 includes a vibration-damping limiting wall 413. The vibration-damping limiting wall 413 is spaced apart from the bottom wall of the mounting box 3. The bottom wall of the mounting box 3 is provided with an upwardly extending limiting post 38. The vibration-damping limiting wall 413 abuts the circumferential sidewall of the limiting post 38.

[0119] The vibration-damping support wall 412 directly abuts the bottom wall of the mounting box 3, limiting the downward movement of the vibration damper 4 by the mounting box 3, enabling the vibration damper 4 to provide basic support and vibration reduction functions for the air pump 1. The vibration-damping limiting wall 413 abuts the circumferential side walls of the limiting column 38, thereby achieving lateral limitation of the vibration damper 4 by the mounting box 3, enhancing the lateral stability of the vibration damper 4, and preventing the vibration damper 4 from moving due to vibration or external force during operation of the air pump 1. This allows the vibration damper 4 to provide lateral limitation for the air pump 1 and ensure that the air pump 1 always remains in the correct position, avoiding displacement or rotation during vibration.

[0120] The vibration-damping limiting wall 413 is spaced apart from the bottom wall of the installation box 3, and the vibration-damping supporting wall 412 for longitudinal limitation and the vibration-damping limiting wall 413 for lateral limitation are separately arranged, which can reduce the vibration transmission from the vibration-damping component 4 to the installation box 3, so that only the vibration-damping supporting wall 412 will directly transmit the vibration to the bottom wall of the installation box 3, while the vibration-damping limiting wall 413 will directly transmit the vibration to the limiting column 38, and will not directly transmit it to the bottom wall of the installation box 3, thereby improving the vibration reduction effect on the vacuum pump 1 and reducing the vibration of the installation box 3.

[0121] Reference Figure 13 and Figure 14 In one embodiment of the present application, the vibration-damping limiting wall 413 is in the form of a closed ring with the ends connected. The vibration-damping support wall 412 is spaced apart from the vibration-damping limiting wall 413 and surrounds the outer side of the vibration-damping limiting wall 413.

[0122] The closed annular vibration-damping limiting wall 413 forms a continuous structure that evenly distributes and absorbs vibration energy in all directions. This ensures that regardless of the direction in which the vibration damper 4 is subjected to vibration or impact, the limiting wall can prevent the vibration damper 4 from deflecting or rotating by contacting the limiting post 38. The closed annular vibration-damping limiting wall 413 provides a clear limiting and support area. Installers only need to insert the limiting post 38 into the area enclosed by the annular vibration-damping limiting wall 413 to secure and limit the vibration damper 4, eliminating the need for excessive adjustment or alignment, thereby improving installation efficiency.

[0123] The vibration-damping support wall 412 surrounds the outer side of the vibration-damping limiting wall 413, and the two are spaced apart, further enhancing the support and limiting effects. The vibration-damping support wall 412 primarily provides vertical support and vibration reduction, while the vibration-damping limiting wall 413, through its annular design, enhances the horizontal limiting effect. The two work together to more effectively control vibration in both vertical and horizontal directions.

[0124] Reference Figure 13In one embodiment of the present application, the support and limiting wall has a notch 418. The notch 418 design of the support and limiting wall can provide a vibration-damping buffer zone, allowing the vibration-damping limiting wall 413 to undergo a certain degree of elastic deformation, thereby further absorbing and dissipating vibration energy and enhancing the vibration reduction effect. The notch 418 design not only improves the buffering performance of the vibration damping member 4, but also reduces stress concentration caused by excessive vibration, making the air pump assembly 100 operate more smoothly. In other embodiments, the support and limiting wall can also be a closed ring.

[0125] Reference Figure 13 and Figure 14 In one embodiment of the present application, the vibration-damping limiting wall 413 includes a first annular wall 414 that abuts the circumferential sidewall of the limiting post 38. The vibration-damping limiting wall 413 also includes a second annular wall 415 disposed between the first annular wall 414 and the vibration-damping support wall 412. The distance between the second annular wall 415 and the vibration-damping support wall 412 is greater than the distance between the second annular wall 415 and the first annular wall 414. A first vibration-damping rib 416 is connected between the first annular wall 414 and the second annular wall 415. A second vibration-damping rib 417 is connected between the second annular wall 415 and the vibration-damping support wall 412.

[0126] By tightly integrating the first annular wall 414 with the limiting column 38, the lateral displacement of the vibration damper 4 is limited, preventing deviation caused by vibration of the air pump 1. The second annular wall 415 and the first annular wall 414 are connected by the first vibration-damping rib 416, further strengthening the stability of the entire limiting structure. The spacing between the first annular wall 414 and the second annular wall 415 is smaller than the spacing between the second annular wall 415 and the vibration-damping support wall 412. This progressive structural design distributes vibration forces in layers, ensuring limiting while avoiding stress concentration in the equipment caused by excessive limiting. By providing a multi-layered annular wall structure, vibration damping performance is significantly improved. Each annular wall can withstand vibration impacts of different directions and amplitudes, providing more effective vibration absorption and energy dispersion for the system, significantly reducing vibration energy transmission. The first vibration-damping rib 416 and the second vibration-damping rib 417 further enhance the stability and vibration damping effect of this multi-layered structure. As the structure connecting the annular walls, the vibration-damping ribs not only provide support but also elastically deform when vibration occurs, thereby absorbing vibration forces and effectively reducing vibration impact.

[0127] Reference Figure 1 、 Figure 9 、 Figures 12 to 14 In one embodiment of the present application, the vibration damping member 4 includes vibration damping side walls 42 that abut against the front and rear walls and the left and right side walls of the air pump 1. The vibration damping side walls 42 are spaced apart from the wall of the installation box 3. The vibration damping side walls 42 include vibration damping limiting ribs 421 that protrude toward the wall of the installation box 3.

[0128] The vibration-damping sidewalls 42 directly abut the front, rear, and left and right sidewalls of the vacuum pump 1, providing all-around vibration-damping protection. This design absorbs vibration energy from different directions. Whether it's front-to-back or left-to-right vibration, the vibration-damping sidewalls 42 effectively buffer it, thereby enhancing the overall vibration-damping effect. The vibration-damping sidewalls 42 tightly abut the four sidewalls of the vacuum pump 1, effectively preventing displacement or shaking of the vacuum pump 1 during operation, ensuring the firm fixation of the vacuum pump 1 and preventing it from shifting or tilting.

[0129] The spacing design between the vibration-damping side wall 42 and the wall of the installation box 3 provides additional deformation space for the vibration-damping material, ensuring that the vibration-damping side wall 42 will not rub against the wall of the installation box 3 during vibration, avoiding noise or wear problems caused by vibration friction. When the air pump 1 vibrates, the vibration-damping side wall 42 can produce a certain deformation within this interval, thereby absorbing more vibration force and reducing the transmission of vibration to the installation box 3, which can effectively protect the air pump 1 and the installation box 3.

[0130] The vibration-damping limiting ribs 421 can abut against the wall of the installation box 3 or against a structure fixed inside the installation box 3. The design of the vibration-damping limiting ribs 421 not only improves the limiting effect, but also provides stronger impact protection for the vibration damping member 4, effectively dissipates the impact force, and reduces friction and wear between the vibration damping member 4 and the wall of the installation box 3 or the internal structure of the installation box 3.

[0131] Reference Figure 1 、 Figure 9 、 Figure 12 In one embodiment of the present application, the vibration damper 4 includes a vibration damper upper wall 43. The vibration damper upper wall 43 abuts against a portion of the top wall of the air pump 1. The upper end of the vibration damper 4 has an installation opening 44. The air pump 1 is placed in the accommodating chamber 40 through the installation opening 44.

[0132] The vibration-damping upper wall 43 can undergo elastic deformation and can temporarily expand the installation opening 44 during the installation process, so that the vacuum pump 1 can be easily placed in the accommodating cavity 40 of the vibration-damping component 4, simplifying the installation process and enabling the rapid installation of the vacuum pump 1. After the vacuum pump 1 is placed in the accommodating cavity 40, the vibration-damping upper wall 43 returns to its original shape, clinging to and abutting against the top wall of the vacuum pump 1, providing a fixing and limiting function. This elastic design avoids complex fastening or additional mechanical limiting mechanisms, thereby improving the efficiency and convenience of installation. The vibration-damping upper wall 43 not only has a limiting function, but the characteristics of its elastic material also provide additional vibration-damping capabilities. The top wall of the vacuum pump 1 may generate vibrations in the vertical direction during operation. Through the elastic deformation of the vibration-damping upper wall 43, these vibrations can be effectively absorbed and dispersed, reducing the transmission of vibrations to other components.

[0133] Reference Figures 15 to 17In one embodiment of the present application, the air pump assembly 100 includes a suspension member 5. The suspension member 5 includes a connecting portion 51 disposed within the mounting box 3 and an elastic arm 52 connected to the connecting portion 51. The elastic arm 52 is integrally formed from an elastic material. The air pump 1 is connected to the connecting portion 51. The elastic arm 52 is connected to the wall of the mounting box 3. The suspension member 5 suspends the air pump 1 within the mounting box 3 via the connecting portion 51 and the elastic arm 52.

[0134] Suspending the vacuum pump 1 within the mounting box 3 via the elastic arm 52 effectively reduces the transmission of vibrations generated during operation to the mounting box 3 and external structures. Because the elastic arm 52 is elastically deformable, when the vacuum pump 1 vibrates during operation, the elastic arm 52 absorbs and cushions the vibrational force through its own deformation, significantly reducing the transmission of vibrational energy to the walls of the mounting box 3. This prevents direct frictional contact between the vacuum pump 1 and the mounting box 3, reducing wear on the component surfaces and avoiding noise or losses caused by friction. The elastic arm 52 is integrally formed from an elastic material, making it simple to process, easy to mold, and inexpensive.

[0135] Reference Figures 15 to 17 In one embodiment of the present application, an accommodating space 53 is formed inside the connecting portion 51. An accommodating opening 54 is formed at the upper end of the connecting portion 51. At least the lower portion of the air pump 1 is placed in the accommodating space 53 through the accommodating opening 54.

[0136] The connecting portion 51 forms an accommodating opening 54 and an internal accommodating space 53, so that the installer can place the lower part of the vacuum pump 1 directly into the accommodating space 53 through the accommodating opening 54 without the need for complicated fixing or alignment steps, thereby reducing the operational complexity during the installation process and improving the installation efficiency. After the lower part of the vacuum pump 1 is placed in the accommodating space 53 of the connecting portion 51, it can be fully supported and fixed. The accommodating space 53 provides a stable space, so that the lower part of the vacuum pump 1 can be firmly embedded therein and is not prone to displacement or loosening. By placing the lower part of the vacuum pump 1 in the accommodating space 53, the weight of the vacuum pump 1 can be evenly distributed on the structure of the connecting portion 51, thereby improving the overall load-bearing capacity and stability.

[0137] Reference Figures 15 to 18 In one embodiment of the present application, the elastic arm 52 includes a free end 524 distal to the connecting portion 51. The free end 524 of the elastic arm 52 is provided with an elastic retaining protrusion 523. A fixing hole 39 is formed in the wall of the mounting box 3. The outer diameter of at least a portion of the elastic retaining protrusion 523 is larger than the diameter of the fixing hole 39. The elastic retaining protrusion 523 elastically deforms from the inside of the mounting box 3, passes through the fixing hole 39, and abuts against the outside of the wall of the mounting box 3.

[0138] The elastic limiting protrusion 523 is designed to have an outer diameter larger than the aperture of the fixing hole 39, which means that during the installation process, the protrusion must undergo elastic deformation to pass through the fixing hole 39. After the elastic limiting protrusion 523 passes through, since its outer diameter is larger than the aperture, it will tightly abut against the outside of the installation box 3 to form a stable connection. This design ensures a firm connection between the elastic arm 52 and the wall of the installation box 3, effectively preventing the equipment from loosening or shifting during operation. The design of the elastic limiting protrusion 523 makes the installation process easier. The installer only needs to press the protrusion through the fixing hole 39 through elastic deformation, without the need to use additional fasteners such as screws and nuts. This integrated connection method reduces the installation steps and improves installation efficiency. When the vacuum pump 1 generates vibration or impact during operation, the elastic protrusion can also absorb and buffer the vibration force through its elastic deformation, reducing the impact of vibration on the wall of the installation box 3 and the elastic arm 52, further improving the vibration reduction effect of the system, and ensuring that the vacuum pump 1 can operate smoothly during operation.

[0139] Reference Figures 15 to 17 In one embodiment of the present application, the elastic wall includes an upper elastic arm 521 and a lower elastic arm 522. The free end 524 of the upper elastic arm 521 is connected to the wall of the installation box 3 above the connecting portion 51 to provide an upward pulling force for the connecting portion 51. The free end 524 of the lower elastic arm 522 is connected to the wall of the installation box 3 below the connecting portion 51 to provide a downward pulling force for the connecting portion 51.

[0140] The upper elastic arm 521 and the lower elastic arm 522 respectively provide an upward pulling force and a downward pulling force for the connecting portion 51. This two-way pulling design ensures that the position of the connecting portion 51 in the mounting box 3 is more stable and will not be displaced or loosened due to a force in a single direction. Through the combined action of the upper and lower elastic arms 52, the vacuum pump 1 can obtain stable support in multiple directions, reducing the possibility of the vacuum pump 1 moving up and down during operation, ensuring that the vacuum pump 1 always remains in the correct position during operation, and avoiding displacement or tilting caused by vibration or impact.

[0141] Reference Figures 15 to 17 In one embodiment of the present application, the upper elastic arm 521 includes a first elastic arm 5211 , a second elastic arm 5212 , a third elastic arm 5213 , and a fourth elastic arm 5214 , which are distributed at intervals along the circumference of the connecting portion 51 .

[0142] By distributing four elastic arms 52 providing upward pulling force around the circumference of the connecting portion 51, the connecting portion 51 can receive uniform pulling force in all four directions. The pulling force applied by each elastic arm 52 to the connecting portion 51 is balanced, effectively preventing tilting or displacement due to force applied in a single direction. This allows the vacuum pump 1 to remain stable in environments with multi-directional vibration or impact, ensuring that the vacuum pump 1 can obtain stable suspension support when subjected to vibration or external impact, and reducing the possibility of the vacuum pump 1 shaking or swaying in any direction.

[0143] Reference Figure 15 、 Figure 16 In one embodiment of the present application, the first elastic arm 5211 is located on the front side of the connecting portion 51 and is connected to the middle portion of the upper end of the front wall of the connecting portion 51. The second elastic arm 5212 is located on the rear side of the connecting portion 51 and is connected to the middle portion of the upper end of the rear wall of the connecting portion 51. The third elastic arm 5213 is located on the left side of the connecting portion 51 and is connected to the middle portion of the upper end of the left wall of the connecting portion 51. The fourth elastic arm 5214 is located on the right side of the connecting portion 51 and is connected to the middle portion of the upper end of the right wall of the connecting portion 51. The lower elastic arm 522 is located below the connecting portion 51 and is connected to the middle portion of the bottom wall of the connecting portion 51.

[0144] Since the four elastic arms 52 are respectively located in the front, back, left and right directions of the connecting part 51, and the elastic arms 52 are all connected to the middle of the upper end of the wall, the tension is evenly distributed. This symmetrical distribution design effectively prevents the connecting part 51 from shifting or tilting under the action of vibration or external force, and can provide a balanced limiting effect for the connecting part 51, reducing the risk of displacement of the equipment in multiple directions. The lower elastic arm 522 is located at the center of the bottom, which can provide vertical limitation for the connecting part 51 and enhance the vertical vibration reduction effect. The elastic arms 52 are distributed around and at the bottom of the vacuum pump 1, providing uniform tension and support, ensuring that the vacuum pump 1 remains stable under multi-directional vibration or impact conditions.

[0145] Reference Figures 15 to 18 In one embodiment of the present application, the free end 524 of the upper elastic arm 521 is connected to the box cover 32. An elastic retaining protrusion 523 is provided at the upper end of the upper elastic wall, and the box cover 32 is formed with a fixing hole 39 that cooperates with the elastic retaining protrusion 523 of the upper elastic wall. A first fixing hole, a second fixing hole, a third fixing hole, and a fourth fixing hole are respectively formed in the middle of the lower ends of the front, rear, left, and right side walls of the box cover 32. The first fixing hole, the second fixing hole, the third fixing hole, and the fourth fixing hole are respectively used to cooperate with the elastic retaining protrusion 523 of the first elastic arm 5211, the second elastic arm 5212, the third elastic arm 5213, and the fourth elastic arm 5214.

[0146] The free end 524 of the lower elastic arm 522 is connected to the bottom wall of the shell body 201. The lower end of the lower elastic arm 522 is provided with an elastic limiting block 523, and the middle of the bottom wall of the shell body 201 is formed with a fixing hole 39 matched with the elastic limiting block 523 of the lower elastic wall.

[0147] The fixing hole 39 matched with the elastic arm 52 is formed in the box cover 32 and the shell body 201, which can facilitate the installation and fixation of the elastic arm 52, can provide uniform pulling force and support for the air suction pump 1, and can ensure that the air suction pump 1 remains stable under multi-directional vibration or impact conditions.

[0148] Referring to Figure 15 and Figure 16 In an embodiment of the present application, the connecting part 51 is made of elastic material. The connecting part 51 and the elastic arm 52 are integrally formed of elastic material. In other embodiments of the present application, the connecting part 51 can also adopt a rigid structure.

[0149] Referring to Figure 1 , Figure 9 , Figure 15 and Figure 16 In an embodiment of the present application, the connecting part 51 can replace the damping member 4 described above as a damping member of the air suction pump. The specific structure of the connecting part 51 can be the same as or similar to the damping member 4 described above. That is, the connecting part 51 can include a damping bottom wall 41 abutting against the bottom wall of the air suction pump 1. However, the connecting part 51 can not have a damping seat 411 downwardly protruding from the damping bottom wall 41. The damping bottom wall 41 can be spaced apart from the wall of the mounting box 3 by a certain space. The connecting part 51 can include a damping side wall 42 abutting against the front and rear side walls and the left and right side walls of the air suction pump 1. The damping side wall 42 can be spaced apart from the wall of the mounting box 3. The damping side wall 42 can include a damping limiting rib 421 protruding toward the wall of the mounting box 3. The damping side wall 42 can also not be provided with the damping limiting rib 421. The connecting part 51 can include a damping upper wall 43. The damping upper wall 43 can abut against part of the top wall of the air suction pump 1. The damping upper wall 43 can elastically deform and temporarily expand the accommodation opening 54 during the installation of the air suction pump 1, so that the air suction pump 1 can be easily placed into the accommodation space 53 of the connecting part 51.

[0150] The elastic arm 52 and the connecting part 51 jointly act to suspend the air suction pump 1 in the mounting box 3, ensuring that the air suction pump 1 can still be stably suspended under multi-directional vibration and impact conditions. The elastic arm 52 and the connecting part 51 are integrally formed of elastic material, which is simple to process, convenient to fix, can improve installation efficiency, and can reduce cost. The elastic arm 52 and the connecting part 51 can both absorb vibration energy, improve the running stability of the air suction pump 1, improve the damping effect, and also simplify the installation and maintenance process.

[0151] In an embodiment of the present application, the elastic material can be rubber. In other embodiments, the elastic material can also be selected from other materials, such as silica gel, etc. The damping member 4 or the suspension member 5 can be integrally formed from the elastic material.

[0152] With reference to Figures 15 to 17 In an embodiment of the present application, the elastic limiting protrusion 523 gradually decreases in outer diameter in the direction of the end of the free end 524 of the elastic arm 52. The elastic limiting protrusion 523 can be conical. With this design, the installation of the elastic limiting protrusion 523 can be facilitated.

[0153] With reference to Figure 1 , Figure 10 , Figure 19 In an embodiment of the present application, the air extraction pump assembly 100 can include an air extraction pump module. The air extraction pump module is arranged in the mounting box 3. The air extraction pump assembly 100 further includes a counterweight 10 arranged in the mounting box 3, the counterweight 10 being arranged between the wall of the mounting box 3 and the air extraction pump module, the counterweight 10 abutting against the wall of the mounting box 3 and abutting against the air extraction pump module.

[0154] The counterweight 10 can effectively absorb and reduce the vibration generated by the air extraction pump module during operation through its own weight and buffering effect. The presence of the counterweight 10 helps to disperse the vibration force generated by the air extraction pump module, thereby avoiding direct transmission of the vibration to the wall of the mounting box 3, further improving the vibration reduction performance of the system and maintaining the stable operation of the equipment.

[0155] The counterweight 10 abuts between the wall of the mounting box 3 and the air extraction pump module, which can simplify the installation and fixing process of the counterweight 10. The counterweight 10 can also act as an intermediate buffer layer and play the role of a shock absorber in a vibrating environment, effectively reducing the impact of the vibration of the air extraction pump module on the mounting box 3. The presence of the counterweight 10 also effectively prevents excessive displacement or shaking of the air extraction pump module.

[0156] With reference to Figure 1 , Figure 10 , Figure 19 In an embodiment of the present application, the air extraction pump module includes the damping member 4 and the air extraction pump 1. The damping member 4 has a receiving cavity 40 formed therein, and the air extraction pump 1 is at least partially arranged in the receiving cavity 40. The damping member 4 is integrally formed from a damping material. The counterweight 10 is arranged between the wall of the mounting box 3 and the damping member 4. The counterweight 10 abuts against the damping member 4. In other embodiments of the present application, the air extraction pump module can only include the air extraction pump 1, or include the air extraction pump 1 and other components, such as the suspension member 5.

[0157] The counterweight 10 abuts against the vibration damper 4. This combined design further enhances the vibration damping effect of the vacuum pump 1. The vibration damper 4 is integrally formed of a vibration damping material and can effectively absorb the vibration generated during the operation of the vacuum pump 1. The counterweight 10 serves as an intermediate buffer layer between the vibration damper 4 and the wall of the mounting box 3, and also helps to reduce the vibration and noise during the operation of the vacuum pump 1. The counterweight 10 is located between the wall of the mounting box 3 and the vibration damper 4, and can also support and limit the displacement of the vibration damper 4, preventing the vibration damper 4 from moving or tilting due to vibration or external force.

[0158] Reference Figure 1 、 Figure 9 、 Figure 10 、 Figure 12 、 Figure 13 In one embodiment of the present application, the vibration damper 4 may be as described above. The vibration damper 4 may include a vibration damper side wall 42 that abuts against the front and rear and left and right side walls of the vacuum pump 1. The vibration damper side wall 42 is spaced apart from the side wall of the mounting box 3. The vibration damper side wall 42 may be provided with a vibration damper limiting rib 421 that protrudes toward the wall of the mounting box 3. The vibration damper limiting rib 421 may abut against the counterweight 10. The vibration damper 4 may include a vibration damper bottom wall 41 and a vibration damper top wall. In other embodiments, the counterweight 10 may also be provided between the top wall of the mounting box 3 and the vibration damper top wall, or between the bottom wall of the mounting box 3 and the vibration damper bottom wall 41. By providing the counterweight 10 between the mounting box 3 and the side wall of the vibration damper 4, and making the vibration damper limiting rib 421 abut against the counterweight 10, the vibration damping and noise reduction effect can be improved, the counterweight 10 is prevented from directly contacting the wall surface of the vibration damper 4, and the wear of the vibration damper 4 is reduced.

[0159] Reference Figure 14 、 Figure 19 In one embodiment of the present application, a fixing rib 34 is provided on the inner wall of the installation box 3. The fixing rib 34 includes a limiting plate 341 and a connecting plate 342. The limiting plate 341 is spaced apart from the inner wall of the installation box 3. The connecting plate 342 connects the inner wall of the installation box 3 and the limiting plate 341. The fixing rib 34 includes a first fixing rib 343 and a second fixing rib 344 spaced apart from each other on the inner wall of the installation box 3. The first fixing rib 343 and the second fixing rib 344 enclose an insertion space 345. The counterweight 10 is inserted into the insertion space 345. The limiting plates 341 of the first fixing rib 343 and the second fixing rib 344 are both in contact with the counterweight 10.

[0160] The first fixing rib 343 and the second fixing rib 344 can firmly fix the counterweight 10 in the installation box 3 through the insertion space 345 formed by the limit plate 341 and the connecting plate 342. After the counterweight 10 is inserted into the insertion space 345, it abuts against the limit plates 341 of the two fixing ribs 34, preventing the counterweight 10 from being displaced or shaking during operation. This ensures that the counterweight 10 is always in the correct working position and improves the overall stability of the equipment. The design of the insertion space 345 simplifies the installation process of the counterweight 10. During installation, the counterweight 10 only needs to be inserted into the insertion space 345 and abut against the limit plate 341, without the need for additional fixings or complicated installation operations. This design not only simplifies the installation process, but also reduces the risk of errors during installation and improves installation efficiency. At the same time, when maintaining or replacing the counterweight 10, it only needs to be simply removed from the insertion space 345, which makes the operation more convenient.

[0161] Reference Figure 1 and Figure 19 In one embodiment of the present application, the counterweight 10 is disposed on the left side and / or right side and / or front side and / or rear side of the vacuum pump module. The bottom wall of the counterweight 10 abuts against the bottom wall of the installation box 3. The bottom wall of the counterweight 10 contacts the bottom wall of the installation box 3, providing a solid support for the counterweight 10 and enhancing the stability of the fixation of the counterweight 10. The counterweight 10 can be installed on the left side, right side, front side, or rear side of the device as needed, flexibly adapting to different design and space layout requirements.

[0162] Reference Figure 1 and Figure 19 In one embodiment of the present application, the counterweight 10 includes a first counterweight 104 and a second counterweight 105. The first counterweight 104 and the second counterweight 105 are relatively arranged on the left and right sides or the front and back sides of the air pump module.

[0163] By respectively arranging the first counterweight 104 and the second counterweight 105 on the left and right sides or the front and back sides of the vacuum pump module, the center of gravity of the mounting box 3 is evenly distributed. This symmetrical design ensures that the vibration generated by the vacuum pump assembly 100 during operation can be better absorbed and dispersed, and will not shake or tilt due to the offset of the center of gravity, thereby improving the overall stability.

[0164] In one embodiment of the present application, the counterweight 10 is made of stainless steel. Using stainless steel as the material for the counterweight 10 not only improves corrosion resistance, impact resistance, and vibration reduction, but also increases the service life and operational stability of the device. In other embodiments of the present application, the counterweight 10 may also be made of other materials, such as copper.

[0165] Reference Figure 1 and Figure 19In one embodiment of the present application, the counterweight 10 is in the form of a rectangular block. The rectangular block-shaped counterweight 10 is simple and stable, capable of forming a large contact area with the inner wall or bottom wall of the mounting box 3, providing stable support. The rectangular block-shaped counterweight 10 also has the advantage of being easy to manufacture and process, reducing production costs.

[0166] Reference Figure 1 and Figure 19 In one embodiment of the present application, the first counterweight 104 and the second counterweight 105 have the same shape and weight. The weight of the first counterweight 104 and the second counterweight 105 is greater than or equal to 100g. Preferably, the weight of the first counterweight 104 and the second counterweight 105 is 100g.

[0167] Reference Figure 1 、 Figure 9 、 Figure 10 In one embodiment of the present application, at least part of the top of the vacuum pump 1 is placed outside the vibration damping member 4. The vacuum pump assembly 100 includes foam 101. The foam 101 at least covers the peripheral wall of the top of the vacuum pump 1 located outside the vibration damping member 4. The foam 101 is a material with high elasticity and flexibility, which can effectively absorb vibration and impact. Covering the peripheral wall of the top of the vacuum pump 1 with foam 101 can further cushion the vibration generated by the operation of the vacuum pump assembly 100 and reduce the transmission of vibration energy. The foam 101 also reduces the friction and wear between the vacuum pump 1 and other components, thereby extending the service life of the vacuum pump 1.

[0168] Reference Figure 1 、 Figure 9 、 Figure 10 In one embodiment of the present application, the box cover 32 is provided with downwardly protruding limiting ribs 35, which abut against the peripheral surface of the foam 101. By providing the downwardly protruding limiting ribs 35 on the box cover 32 and abutting against the peripheral surface of the foam 101, not only is the wear and displacement of the foam 101 prevented, but the fixation and vibration reduction effect of the foam 101 are also effectively improved.

[0169] Reference Figure 1 、 Figure 2 、 Figure 20 In one embodiment of the present application, the air pump assembly 100 includes an air pump module and a noise reduction and vibration reduction assembly 6 disposed outside the air pump module. The noise reduction and vibration reduction assembly 6 includes a metal plate 61 and a vibration reduction layer 62. The vibration reduction layer 62 covers at least one side of the metal plate 61.

[0170] Since metal materials have a high density and sound waves are difficult to penetrate, the metal plate 61 has a shielding effect on noise, the vibration-damping layer 62 can absorb high-frequency noise, and the metal plate 61 can reflect low-frequency noise, thereby forming a dual noise suppression mechanism, further enhancing the noise reduction effect. The metal plate 61 can increase the overall weight of the vacuum pump assembly 100 and reduce the vibration of the vacuum pump assembly 100. The presence of the vibration-damping layer 62 can also effectively absorb the vibration generated during the operation of the vacuum pump assembly 100 and reduce the transmission of vibration to the outside, thereby further enhancing the vibration reduction effect. The combination of the metal plate 61 and the vibration-damping layer 62 makes the vibration-damping and noise-reducing assembly have a certain degree of softness while also having a certain degree of rigidity, which can better resist vibration and impact, and can also provide certain support for the vacuum pump module.

[0171] The noise reduction and vibration damping component 6 simplifies the installation process of the equipment through the modular design of the metal plate 61 and the vibration damping layer 62. The metal plate 61 and the vibration damping layer 62 can be installed on the outside of the vacuum pump module at one time, reducing additional installation steps and making subsequent maintenance and replacement more convenient. Maintenance personnel can easily disassemble or reinstall the noise reduction and vibration damping component 6 to improve efficiency.

[0172] The air pump module here may be different from the air pump module described above. The air pump module may refer to a component module including the air pump 1 and other components, or may refer only to the air pump 1. That is, the noise reduction and vibration reduction component 6 may be directly arranged outside the air pump 1 to reduce vibration and noise of the air pump 1, or may be arranged outside the air pump module composed of the air pump 1 and other structures to reduce vibration and noise of the air pump module. For example, the air pump module may include the air pump 1 and the vibration reduction component 4, and the noise reduction and vibration reduction component 6 may be arranged outside the vibration reduction component 4.

[0173] Reference Figure 1 、 Figure 2 、 Figure 20 In one embodiment of the present application, the air extraction pump module may include an installation box 3 and an air extraction pump 1 disposed within the installation box 3. A noise reduction and vibration reduction assembly 6 is disposed outside the installation box 3. A metal plate 61 is spaced apart from and opposed to the wall of the installation box 3. A vibration reduction layer 62 covers at least the side of the metal plate 61 facing the wall of the installation box 3. The vibration reduction layer 62 is in contact with the wall of the installation box 3. The installation box 3 may be as described above.

[0174] The vibration-damping layer 62 is directly connected to the wall of the mounting box 3, effectively absorbing the vibrations generated during the operation of the vacuum pump 1 and preventing the transmission of this vibration energy to the outside of the mounting box 3. The vibration-damping layer 62 acts as a buffer. Through its elastic properties, it reduces the impact of vibrations on the mounting box 3 and avoids direct friction and wear on the mounting box 3. In addition to its vibration and noise reduction effects, the metal plate 61 also provides an additional physical barrier to protect the mounting box 3 from external impact or physical damage, thereby enhancing the overall vibration reduction, noise reduction, impact resistance and durability of the vacuum pump assembly 100.

[0175] In other embodiments of the present application, the metal plate 61 can also directly abut the wall of the mounting box 3, and the damping layer 62 covers the side of the metal plate 61 away from the wall of the mounting box 3.

[0176] Referring to Figure 20 In an embodiment of the present application, the damping layer 62 includes a first damping layer 621 and a second damping layer 622. The first damping layer 621 covers the side of the metal plate 61 facing the wall of the mounting box 3. The second damping layer 622 covers the side of the metal plate 61 away from the wall of the mounting box 3.

[0177] By covering the side of the metal plate 61 facing the wall of the mounting box 3 with the first damping layer 621 and covering the side of the metal plate 61 away from the wall of the mounting box 3 with the second damping layer 622, this design achieves the effects of multiple damping and noise reduction. The synergistic effect of the two layers of damping layer 62 and the metal plate 61 significantly reduces the transmission of vibration and noise of the air suction pump 1, and also improves the impact resistance and running stability of the air suction pump assembly 100. The first damping layer 621 is in contact with the wall of the mounting box 3, which can reduce the wear of the wall of the mounting box 3, and the second damping layer 622 is arranged outside the metal plate 61, which can reduce the wear of the metal plate 61 and slow down the impact of the external environment, effectively reducing the accumulation of mechanical stress and reducing damage caused by vibration or impact, prolonging the service life of the air suction pump assembly 100. The damping layer 62 directly covers both sides of the metal plate 61, which can simplify the installation steps and avoid errors during installation, ensuring the long-term stability of the equipment.

[0178] Referring to Figure 20 In an embodiment of the present application, the first damping layer 621 and the second damping layer 622 both extend outwardly from the metal plate 61. The portions of the first damping layer 621 and the second damping layer 622 located outside the metal plate 61 are connected to each other to enclose the metal plate 61 within the damping layer 62.

[0179] By extending and connecting the first damping layer 621 and the second damping layer 622, the metal plate 61 is completely enclosed within the damping layer 62. This full-coverage structure not only achieves stable fixation of the metal plate 61, but also effectively prevents wear and external contact of the metal plate 61, enhancing the durability and safety of the air suction pump assembly 100, preventing dust, moisture, or chemicals in the external environment from directly contacting the metal plate 61, avoiding oxidation or corrosion of the metal plate 61, and reducing the risk of electric shock, damage to other structures, or injury to workers caused by external exposure of the metal plate 61.

[0180] In other embodiments of the present application, the damping layer 62 can also extend to be flush with the edges of the metal plate 61, and the edge side walls of the metal plate 61 are exposed externally. The edges of the damping layer 62 can also be inside the edges of the metal plate 61.

[0181] Reference Figure 20 In one embodiment of the present application, the thickness of the metal plate 61 is greater than or equal to 4 mm. The thickness of the first vibration-damping layer 621 and the second vibration-damping layer 622 are both greater than twice the thickness of the metal plate 61. The thicker metal plate 61 can reflect most of the sound through its density and hardness, and the thicker metal plate 61 is also heavier, thereby reducing the noise and vibration generated when the vacuum pump 1 is running. The thickness of the first vibration-damping layer 621 and the second vibration-damping layer 622 are both greater than twice the thickness of the metal plate 61. The thick vibration-damping layer 62 can effectively absorb noise and vibration energy, while further blocking the noise and vibration reflected by the metal plate 61, thereby achieving better noise reduction and vibration reduction effects. By adopting a metal plate 61 and a vibration-damping layer 62 with a larger thickness, better cushioning and protection can be provided to prevent the vacuum pump assembly 100 from being damaged by external impact or vibration.

[0182] Reference Figure 20 In one embodiment of the present application, the vibration-damping layer 62 is bonded to the wall of the installation box 3, and the vibration-damping layer 62 is bonded to the metal plate 61. The portions of the first vibration-damping layer 621 and the second vibration-damping layer 622 located outside the metal plate 61 are bonded to each other. By bonding the vibration-damping layer 62 to the wall of the installation box 3 and the metal plate 61, a firm connection between the vibration-damping layer 62 and the various components is ensured, and the noise reduction and vibration reduction assembly 6 is prevented from being displaced or loosened due to vibration or impact, ensuring that the noise reduction and vibration reduction assembly 6 always plays a role in vibration reduction and noise reduction in the designed position, ensuring that the noise reduction and vibration reduction assembly 6 maintains its position stable during long-term use, and improving the overall structural stability of the equipment. The vibration-damping layer 62, the metal plate 61 and the wall of the installation box 3 are firmly connected together by bonding, which simplifies the structural design of the equipment, does not require additional fasteners or complex mechanical connections, reduces assembly steps, and improves the simplicity and efficiency of installation.

[0183] Reference Figure 20 In one embodiment of the present application, the metal plate 61 is a stainless steel plate. The vibration-damping layer 62 is IXPE foam 101, and the vibration-damping layer 62 has an interference fit with the wall of the installation box 3. The interference fit between the vibration-damping layer 62 and the wall of the installation box 3 is not less than 3 mm. The IXPE foam 101 has excellent vibration-damping performance, and its flexible structure can absorb and buffer the vibration and impact generated by the vacuum pump assembly 100 during operation. Through the interference fit with the wall of the installation box 3, the vibration-damping layer 62 can maintain continuous close contact, further enhancing the vibration energy absorption effect of the vibration-damping layer 62, and effectively reducing the transmission of vibration to the outside. As a strong and durable material, the stainless steel plate has excellent corrosion resistance, high temperature resistance and oxidation resistance, and also has good mechanical strength. The durability of the IXPE foam 101 is also very high, with good anti-aging, moisture resistance and chemical corrosion resistance, which can effectively ensure that the equipment can still operate stably in a humid, dusty or chemically exposed environment.

[0184] Reference Figure 1 、 Figure 20 In one embodiment of the present application, the noise reduction and vibration damping assembly 6 includes an upper noise reduction and vibration damping assembly 63. The metal plate 61 of the upper noise reduction and vibration damping assembly 63 is spaced apart from the upper wall of the installation box 3, and the vibration damping layer 62 of the upper noise reduction and vibration damping assembly 63 is in contact with the upper wall of the installation box 3. The noise reduction and vibration damping assembly 6 includes a noise reduction and vibration damping assembly 64. The metal plate 61 of the noise reduction and vibration damping assembly 64 is spaced apart from the bottom wall of the installation box 3, and the vibration damping layer 62 of the noise reduction and vibration damping assembly 64 is in contact with the bottom wall of the installation box 3. The noise reduction and vibration damping assembly 6 includes a front noise reduction and vibration damping assembly. The metal plate 61 of the front noise reduction and vibration damping assembly is spaced apart from the front wall of the installation box 3, and the vibration damping layer 62 of the front noise reduction and vibration damping assembly is in contact with the front wall of the installation box 3.

[0185] The noise reduction and vibration damping assembly 6 includes a rear noise reduction and vibration damping assembly. The metal plate 61 of the rear noise reduction and vibration damping assembly is spaced apart from the rear wall of the installation box 3, and the vibration damping layer 62 of the rear noise reduction and vibration damping assembly is in contact with the rear wall of the installation box 3. The noise reduction and vibration damping assembly 6 includes a left noise reduction and vibration damping assembly 65. The metal plate 61 of the left noise reduction and vibration damping assembly 65 is spaced apart from the left wall of the installation box 3, and the vibration damping layer 62 of the left noise reduction and vibration damping assembly 65 is in contact with the left wall of the installation box 3. The noise reduction and vibration damping assembly 6 includes a right noise reduction and vibration damping assembly 66. The metal plate 61 of the right noise reduction and vibration damping assembly 66 is spaced apart from the right wall of the installation box 3, and the vibration damping layer 62 of the right noise reduction and vibration damping assembly 66 is in contact with the right wall of the installation box 3.

[0186] By placing noise-reduction and vibration-damping assemblies 6 in six directions (top, bottom, front, back, left, and right) of the mounting box 3, comprehensive vibration-damping protection and sound insulation are achieved. Metal plates 61 in each direction maintain a distance from the wall of the mounting box 3 and contact the wall through the vibration-damping layer 62, ensuring the vibration-damping performance, impact resistance, and durability of the noise-reduction and vibration-damping assemblies 6. This design significantly reduces mechanical wear on the mounting box 3, extends the service life of the vacuum pump assembly 100, and improves its protection in complex environments.

[0187] Reference Figure 4 、 Figure 20 、 Figure 21In one embodiment of the present application, the storage chamber 1002 includes a cold storage chamber 1004. The vacuum pump assembly 100 is arranged in the cold storage chamber 1004. By arranging the vacuum pump assembly 100 in the cold storage chamber 1004, the inner liner, the insulation layer and the door body 1003 of the cold storage chamber 1004 can be used to isolate the noise and vibration of the vacuum pump assembly 100 from being transmitted outward, thereby avoiding affecting the user's life and improving the user's experience. The target vacuum space of the vacuum pump assembly 100 can be the cold storage chamber 1004, or it can be a local space in the cold storage chamber 1004. The vacuum pump assembly 100 is arranged in the cold storage chamber 1004, and the target vacuum space is also in the cold storage chamber 1004, which can facilitate the connection between the vacuum pump assembly 100 and the target vacuum space and simplify the connection path.

[0188] Reference Figure 4 、 Figure 20 、 Figure 21 In one embodiment of the present application, refrigeration equipment 1000 includes a cylindrical body 1005 disposed within a refrigerating chamber 1004. The cylindrical body 1005 has an open front end, forming a front opening. Refrigeration equipment 1000 includes a retractable drawer 1006 disposed within the cylindrical body 1005. The vacuum pump assembly 100 is disposed between the rear wall of the cylindrical body 1005 and the rear wall of the refrigerating chamber 1004. The metal plate 61 is spaced apart from and opposed to the wall of the cylindrical body 1005 or the wall of the refrigerating chamber 1004. The vibration-damping layer 62 is in contact with the wall of the cylindrical body 1005 or the wall of the refrigerating chamber 1004.

[0189] The wall of the cylinder 1005 and the wall of the cold storage chamber 1004 enclose an installation space for the vacuum pump assembly 100. The vibration-damping layer 62 can be bonded to the wall of the cylinder 1005 or the wall of the cold storage chamber 1004. The first vibration-damping layer 621 is located between the metal plate 61 and the wall of the installation box 3, and the second vibration-damping layer 622 is located between the metal plate 61 and the wall of the cylinder 1005 or the wall of the cold storage chamber 1004. The internal space of the cylinder 1005 is the target air extraction space of the vacuum pump assembly 100. By bonding the vibration-damping layer 62 to the wall of the cylinder 1005 or the wall of the cold storage chamber 1004, the installation process is simplified, and the stable connection between the noise reduction and vibration reduction assembly 6 and the cylinder 1005 and the wall of the cold storage chamber 1004 is ensured. No additional fixing device is required, which reduces the complex assembly steps while ensuring the firmness of the equipment installation and the vibration reduction effect.

[0190] The vibration-damping layer 62 is arranged between the metal plate 61 and the wall of the cylinder 1005 or the wall of the cold storage chamber 1004, which can effectively absorb and buffer the vibration generated by the vacuum pump assembly 100 during operation, prevent the vibration from being transmitted to the cylinder 1005 and the wall of the cold storage chamber 1004, and prevent mechanical friction or collision between the vacuum pump assembly 100 and the cylinder 1005 or other components of the cold storage chamber 1004, thereby reducing the impact of vibration on the internal environment of the refrigeration equipment 1000 and the cold storage chamber 1004, reducing the noise interference of the equipment, and improving the user experience.

[0191] The vacuum pump assembly 100 is arranged between the rear wall of the cylinder 1005 and the rear wall of the refrigeration chamber 1004. By optimizing the space design, the idle space in the refrigeration chamber 1004 is effectively utilized. It not only does not occupy the effective storage space of the refrigeration chamber 1004, but also can hide the mechanical parts of the equipment, thereby improving the structural compactness of the overall space. Moreover, the vacuum pump assembly 100 is arranged at the rear side of the refrigeration chamber 1004, far away from the refrigeration door, which extends the propagation path of noise and vibration and reduces outward noise interference.

[0192] The space inside the first column 243 and the barrel 1005 can be provided with a connecting pipe, and an oxygen permeable membrane can be provided in the connecting pipe so that the air pump 1 can extract the oxygen in the barrel 1005, so that a low oxygen environment is formed in the barrel 1005 to extend the storage time of the food in the barrel 1005. The oxygen permeable membrane is a special membrane material that allows oxygen to pass through, which restricts the passage of other gases. The oxygen permeable membrane can selectively control the inflow or outflow of oxygen, helping to maintain the oxygen concentration in the barrel 1005 within a predetermined range. The oxygen inside the barrel 1005 is extracted by the air pump 1 to form a low oxygen environment, which can significantly extend the shelf life of foods such as fruits, vegetables, and meat, and slow down oxidation reactions and microbial reproduction.

[0193] In summary, the vacuum pump assembly 100, the manufacturing method of the vacuum pump assembly 100, and the refrigeration device 1000 of the present application can solve the problem that the existing vacuum pump 1 design generates vibration and noise during operation, which affects the user experience. The technical solution of the present application can reduce the vibration and noise of the vacuum pump assembly 100, thereby improving the user experience.

[0194] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0195] The series of detailed descriptions listed above are only specific descriptions of the feasible implementation methods of this patent. They are not intended to limit the scope of protection of this patent. Any equivalent implementation methods or changes that do not deviate from the technical spirit of this patent should be included in the scope of protection of this patent.

Claims

1. A vacuum pump assembly (100), characterized in that: It comprises an air pump module and a noise reduction and vibration reduction component (6) arranged outside the air pump module. The noise reduction and vibration reduction component (6) comprises a metal plate (61) and a vibration reduction layer (62). The vibration reduction layer (62) covers at least one side of the metal plate (61).

2. The air pump assembly (100) according to claim 1, characterized in that The air pump module comprises an installation box (3) and an air pump (1) arranged in the installation box (3); the noise reduction and vibration reduction component (6) is arranged outside the installation box (3); the metal plate (61) is spaced apart from the wall of the installation box (3); the vibration reduction layer (62) covers at least one side of the metal plate (61) facing the wall of the installation box (3); and the vibration reduction layer (62) is in contact with the wall of the installation box (3).

3. The air pump assembly (100) according to claim 2, characterized in that The vibration-damping layer (62) comprises a first vibration-damping layer (621) and a second vibration-damping layer (622); the first vibration-damping layer (621) covers the side of the metal plate (61) facing the wall of the installation box (3); and the second vibration-damping layer (622) covers the side of the metal plate (61) facing away from the wall of the installation box (3).

4. The air pump assembly (100) according to claim 3, characterized in that The first vibration damping layer (621) and the second vibration damping layer (622) both extend toward the outside of the metal plate (61), and portions of the first vibration damping layer (621) and the second vibration damping layer (622) located outside the metal plate (61) are connected to each other to seal the metal plate (61) within the vibration damping layer (62).

5. The air pump assembly (100) according to claim 4, characterized in that: The thickness of the metal plate (61) is greater than or equal to 4 mm, and the thickness of the first vibration-damping layer (621) and the second vibration-damping layer (622) are both greater than twice the thickness of the metal plate (61).

6. The air pump assembly (100) according to claim 5, characterized in that: The vibration-damping layer (62) is bonded to the wall of the installation box (3), and the vibration-damping layer (62) is bonded to the metal plate (61). Parts of the first vibration-damping layer (621) and the second vibration-damping layer (622) located outside the metal plate (61) are bonded to each other. The metal plate (61) is a stainless steel plate, and the vibration-damping layer (62) is IXPE foam (101). The vibration-damping layer (62) is interference-fitted with the wall of the installation box (3), and the interference fit amount between the vibration-damping layer (62) and the wall of the installation box (3) is not less than 3 mm.

7. The air pump assembly (100) according to claim 2, characterized in that The noise reduction and vibration reduction component (6) comprises an upper noise reduction and vibration reduction component (63), a lower noise reduction and vibration reduction component (64), a front noise reduction and vibration reduction component, a rear noise reduction and vibration reduction component, a left noise reduction and vibration reduction component (65), and a right noise reduction and vibration reduction component (66); the metal plate (61) of the upper noise reduction and vibration reduction component (63) is spaced opposite to the upper wall of the installation box (3); the vibration reduction layer (62) of the upper noise reduction and vibration reduction component (63) is connected to the upper wall of the installation box (3); the metal plate (61) of the lower noise reduction and vibration reduction component (64) is spaced opposite to the bottom wall of the installation box (3); the vibration reduction layer (62) of the lower noise reduction and vibration reduction component (64) is connected to the bottom wall of the installation box (3); the metal plate (61) of the front noise reduction and vibration reduction component is spaced opposite to the bottom wall of the installation box (3); ) are spaced apart from each other at the front wall, the vibration-damping layer (62) of the front noise reduction and vibration damping assembly is in contact with the front wall of the installation box (3), the metal plate (61) of the rear noise reduction and vibration damping assembly is spaced apart from each other at the rear wall of the installation box (3), the vibration-damping layer (62) of the rear noise reduction and vibration damping assembly is in contact with the rear wall of the installation box (3), the metal plate (61) of the left noise reduction and vibration damping assembly (65) is spaced apart from each other at the left wall of the installation box (3), the vibration-damping layer (62) of the left noise reduction and vibration damping assembly (65) is in contact with the left wall of the installation box (3), the metal plate (61) of the right noise reduction and vibration damping assembly (66) is spaced apart from each other at the right wall of the installation box (3), the vibration-damping layer (62) of the right noise reduction and vibration damping assembly (66) is in contact with the right wall of the installation box (3).

8. The air pump assembly (100) according to claim 2, characterized in that The air pump assembly (100) includes a vibration damping member (4) fixed in the installation box (3), an accommodating cavity (40) is formed inside the vibration damping member (4), at least the bottom of the air pump (1) is fixed in the accommodating cavity (40), and the vibration damping member (4) is integrally formed of a vibration damping material, and the vibration damping material is rubber.

9. A refrigeration device (1000), comprising a housing (1001), a storage chamber (1002) formed in the housing (1001), and a door (1003) for opening and closing the storage chamber (1002), characterized in that: The refrigeration device (1000) further includes an air extraction pump assembly (100) according to any one of claims 1 to 8, the storage chamber (1002) includes a refrigeration chamber (1004), and the air extraction pump assembly (100) is arranged in the refrigeration chamber (1004).

10. The refrigeration device (1000) according to claim 9, characterized in that: The refrigeration device (1000) comprises a cylinder (1005) arranged in the refrigeration chamber (1004), the cylinder (1005) having a front end open to form a front opening, the refrigeration device (1000) comprises a drawer (1006) arranged in the cylinder (1005) and capable of being pulled out, the air pump assembly (100) being arranged between the rear wall of the cylinder (1005) and the rear wall of the refrigeration chamber (1004), the metal plate (61) being spaced apart from the wall of the cylinder (1005) or the wall of the refrigeration chamber (1004), and the vibration-damping layer (62) being connected to the wall of the cylinder (1005) or the wall of the refrigeration chamber (1004).

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