Gas extraction pump assembly and refrigeration apparatus having same

Abstract

A gas extraction pump assembly and a refrigeration apparatus having same. The gas extraction pump assembly comprises a gas extraction pump (1) and a silencer (2). The gas extraction pump (1) comprises a pump gas intake portion (11) and a pump gas output portion (12); a silencing cavity (21) is formed inside the silencer (2); the silencer (2) is provided with a silencing gas intake portion (22) in communication with the silencing cavity (21); the silencer (2) is provided with a pump gas intake channel (24); the pump gas intake channel (24) comprises a first channel end (241) and a second channel end (242); the first channel end (241) is configured to be in communication with a target gas extraction space of the gas extraction pump (1); the second channel end (242) is connected to the pump gas intake portion (11); and the pump gas output portion (12) is connected to the silencing gas intake portion (22). Such a structure can reduce the vibration and noise of the gas extraction pump, and also make the gas extraction pump assembly more compact.

Description

Air pump assembly and refrigeration equipment having it

[0001] This application is based on and claims priority to Chinese Patent Application No. 202411658193.X, filed on November 19, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of home appliances, and more particularly to a vacuum pump assembly and a refrigeration device having the same. Background Technology

[0003] Refrigeration equipment, such as refrigerators, is a common household appliance used for storing food. Existing refrigeration equipment generally extends the shelf life of food by providing a low-temperature environment. However, in the storage of fresh produce such as fruits and vegetables, the gas environment inside the storage compartment is also crucial for delaying food aging and reducing spoilage. For example, a low-vacuum environment reduces airflow, minimizing the spread of odors and bacteria between different foods, effectively preventing cross-contamination. Furthermore, fruits and vegetables in a low-oxygen environment experience reduced respiration, thus extending their freshness. To regulate the gas environment inside the storage compartment, a vacuum pump is typically used to extract gas. However, existing designs have the following drawbacks: the vacuum pump generates vibration and noise during operation, affecting the user experience.

[0004] Any reference to prior art in the specification is not and should not be construed as an admission or in any way an implication that such prior art constitutes part of common general knowledge in the application region or any other jurisdiction, or that such prior art could be reasonably understood and regarded as relevant by a person skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide a vacuum pump assembly and a refrigeration device having the same, which can reduce the vibration and noise of the vacuum pump by providing a pump inlet channel in the silencer, and at the same time make the vacuum pump assembly structure more compact.

[0006] To achieve the above objectives, this application provides a vacuum pump assembly, including a vacuum pump and a silencer. The vacuum pump includes a pump inlet and a pump outlet. The silencer has a silencing cavity inside and is provided with a silencing inlet communicating with the silencing cavity. The silencer is also provided with a pump inlet channel, which includes a first channel end and a second channel end. The first channel end is used to communicate with the target vacuum space of the vacuum pump, and the second channel end is connected to the pump inlet. The pump outlet is connected to the silencing inlet.

[0007] To achieve the above objectives, one embodiment of this application provides a refrigeration device, including a housing, a storage compartment formed within the housing, and a door for opening and closing the storage compartment. The refrigeration device further includes an air pump assembly as described in any of the above embodiments. The storage compartment includes a refrigerator compartment, and the air pump assembly is disposed within the refrigerator compartment.

[0008] Compared with the prior art, the present application has the advantage of providing a pump air inlet channel in the silencer, which can reduce the vibration and noise of the air pump and make the air pump assembly structure more compact.

[0009] The term “comprise” as used herein, and variations thereof such as “comprises”, “comprised”, “comprising”, “including”, and “containing”, do not exclude other features, components, elements, or steps unless the context clearly requires otherwise. Attached Figure Description

[0010] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings, wherein:

[0011] Figure 1 is an exploded view of a vacuum pump assembly according to an embodiment of this application;

[0012] Figure 2 is a schematic diagram of the assembly of the air pump assembly shown in Figure 1;

[0013] Figure 3 is a schematic diagram of the air pump in Figure 1;

[0014] Figure 4 is a structural schematic diagram of a refrigeration device according to an embodiment of this application;

[0015] Figure 5 is a schematic diagram of the silencer in Figure 1;

[0016] Figure 6 is a schematic diagram of the shell structure in Figure 5;

[0017] Figure 7 is a longitudinal sectional view of the silencer shown in Figure 5;

[0018] Figure 8 is a cross-sectional view of the silencer shown in Figure 5;

[0019] Figure 9 is an assembly diagram of the air pump, vibration damper, silencer and related components in Figure 1;

[0020] Figure 10 is an assembly diagram of the box body, air pump and related components in Figure 1;

[0021] Figure 11 is a schematic diagram of the assembly of the air pump, silencer and related components in Figure 1;

[0022] Figure 12 is a structural schematic diagram of the vibration damper in Figure 1;

[0023] Figure 13 is a structural schematic diagram of the vibration damper shown in Figure 12 from another perspective;

[0024] Figure 14 is a structural schematic diagram of the main body of the box in Figure 1;

[0025] Figure 15 is a structural schematic diagram of a suspension component according to an embodiment of this application;

[0026] Figure 16 is a schematic diagram of the assembly of the suspension component shown in Figure 15 and the air pump shown in Figure 1.

[0027] Figure 17 is a schematic diagram of the assembly of the suspension component shown in Figure 15 and the mounting box shown in Figure 1.

[0028] Figure 18 is a structural schematic diagram of the box lid shown in Figure 17;

[0029] Figure 19 is an assembly diagram of the box body, air pump, counterweight and related components shown in Figure 1.

[0030] Figure 20 is a schematic diagram of the assembly of the noise reduction and vibration damping component and the mounting box shown in Figure 2 according to an embodiment of this application;

[0031] Figure 21 is a schematic diagram of the assembly of the noise reduction and vibration damping components shown in Figure 20 with the cold storage compartment shown in Figure 4. Detailed Implementation

[0032] The present patent will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present patent, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of this patent.

[0033] Referring to Figures 1 to 3, this application provides a vacuum pump assembly 100. In one embodiment of this application, the vacuum pump assembly 100 may include a vacuum pump 1. The vacuum pump 1 may also be referred to as a vacuum pump. The vacuum pump 1 can be used to remove gas or air from a relatively enclosed space, which may be referred to as the target vacuum space of the vacuum pump 1. The vacuum pump 1 can reduce the air pressure in the target vacuum space by removing air, thereby creating a vacuum environment below atmospheric pressure, such as a low vacuum environment. The vacuum pump 1 can also reduce the oxygen content in the target vacuum space by removing gases such as oxygen, thereby creating a low-oxygen environment.

[0034] The vacuum pump 1 includes a pump inlet section 11. The pump inlet section 11 can be connected to the target vacuum space. The vacuum pump 1 draws in gas from the target vacuum space through the pump inlet section 11.

[0035] The vacuum pump 1 may include a pumping outlet section 12. Gas drawn into the target vacuum space by the vacuum pump 1 can be discharged to the outside of the vacuum pump 1 through the pumping outlet section 12. The pumping outlet section 12 may be connected to other structures, allowing the discharged gas to enter the interior of other structures, or the pumping outlet section 12 may be connected to the external environment, allowing the gas to be directly discharged into the atmosphere.

[0036] The air pump 1 may also include a drive system. The drive system may be an electric motor or a pneumatic system, etc. The drive system is used to drive the operation of the air pump 1, and drives the mechanical parts of the pump to operate through the transmission mechanism, causing the components inside the pump chamber of the air pump 1 to move, thereby completing the process of gas intake and exhaust.

[0037] Referring to Figure 4, this application provides a refrigeration device 1000. The refrigeration device 1000 may include a housing 1001, a storage chamber 1002 formed within the housing 1001, and a door 1003 for opening and closing the storage chamber 1002. The refrigeration device 1000 may also include the vacuum pump assembly 100 described in this application. The target vacuum space for the vacuum pump assembly 100 may be the storage chamber 1002, or it may be a space located inside the housing 1001, the door 1003, or the storage chamber 1002. Through the vacuum pump assembly 100, a special gas environment such as low oxygen or vacuum can be created inside the refrigeration device 1000, improving the functionality of the refrigeration device 1000 and providing a better storage environment for items stored inside. The refrigeration device 1000 of this application may be a refrigerator, freezer, commercial display case, etc.

[0038] Referring to Figure 4, in one embodiment of this application, the vacuum pump assembly 100 can be disposed within the storage compartment 1002. By disposing of the vacuum pump assembly 100 within the storage compartment 1002, the housing 1001 and the door 1003 can seal the storage compartment 1002, thereby reducing the propagation of noise from the vacuum pump assembly 100 and improving the user experience.

[0039] Referring to Figures 1 and 5, in one embodiment of this application, the vacuum pump assembly 100 may include a silencer 2. The silencer 2 can be used to reduce the noise generated when the vacuum pump 1 discharges gas. The silencer 2 may include a housing 20. The housing 20 may be made of durable materials such as metal or plastic, and the housing 20 can enclose and protect its internal structure. At the same time, the housing 20 provides a relatively sealed environment to reduce noise leakage.

[0040] Referring to Figures 1, 5 to 8, the muffler 2 may include a muffler cavity 21. The muffler cavity 21 can be formed inside the muffler 2, i.e., inside the housing 20. The muffler 2 may include a muffler air inlet 22. The housing 20 may be provided with a muffler air inlet 22 communicating with the muffler cavity 21. A pump outlet 12 may be connected to the muffler air inlet 22. The muffler air inlet 22 is used to allow the gas discharged from the pump outlet 12 to enter the muffler cavity 21. The muffler cavity 21 may be designed with an expansion relative to the muffler air inlet 22, so that the gas entering the muffler cavity 21 from the muffler air inlet 22 can be suddenly decelerated, allowing the sound waves to be reflected. The energy of the sound waves can be attenuated, thereby reducing noise.

[0041] Referring to Figures 1, 5 to 8, in one embodiment of this application, the muffler 2 may include a muffler exhaust section 23. The housing 20 may be provided with a muffler exhaust section 23 communicating with the muffler cavity 21. The muffler exhaust section 23 is the airflow discharge channel of the muffler 2. The airflow entering the muffler cavity 21 from the muffler inlet 22 is muffled by the muffler cavity 21 and can then be discharged into the atmosphere from the muffler exhaust section 23.

[0042] Referring to Figures 1, 5 to 8, in one embodiment of this application, the muffler exhaust section 23 includes a metal pipe 231. The inner diameter of the metal pipe 231 is less than 0.7 mm. Gas entering the muffler chamber 21 from the muffler intake section 22 is discharged through the metal pipe 231.

[0043] By forming a smaller-diameter exhaust channel through the metal pipe 231, the expansion ratio of the muffler cavity 21 and the exhaust pipe can be greatly increased, making the muffler 2 a reactive muffler 2, significantly reducing the propagation of sound waves, and thus improving the muffler 2's noise reduction effect. The expansion ratio refers to the parameter of the change in cross-sectional area when airflow enters the metal pipe 231 from the muffler cavity 21. The expansion ratio can be calculated by dividing the cross-sectional area of ​​the muffler cavity 21 by the cross-sectional area of ​​the metal pipe 231.

[0044] The small inner diameter of the metal tube 231 can block and absorb some of the sound wave energy through mechanical damping and reflection, significantly attenuating noise as it passes through the muffler exhaust section 23. Furthermore, the small-diameter metal tube 231 restricts sudden airflow release, eliminating strong noise sources during exhaust and effectively reducing overall noise output. Due to the small inner diameter of the metal tube 231, the airflow exiting the muffler cavity 21 is significantly restricted as it passes through the metal tube 231, resulting in a reduced airflow velocity. This reduced airflow velocity decreases turbulence, thereby reducing noise generated by turbulence and allowing the gas to be released smoothly from the muffler cavity 21 into the atmosphere. This reduces the sharpness of noise caused by high-speed exhaust and ensures that no noise peaks are generated during gas emission.

[0045] In one embodiment of this application, the diameter of the metal tube 231 can be 0.5 mm. Calculations show that the cross-sectional area S2 of the metal tube 231 is approximately 0.2 mm². 2 If the cross-sectional area S1 of the silencing cavity 21 is 480 mm² 2 Therefore, the expansion ratio of silencer 2 is S2 / S1 = 2400. Actual verification shows that its noise reduction can reach over 23dB. A higher expansion ratio facilitates sound wave diffusion and reflection, thereby reducing sound wave energy and lowering noise. The metal needle-type reactive silencer with a high expansion ratio described in this application has excellent noise reduction performance, is smaller in size, and offers better cost-effectiveness.

[0046] Referring to Figures 5 to 8, in one embodiment of this application, the muffler intake 22 includes a muffler intake port 222 located within the muffler cavity 21. The metal pipe 231 includes a muffler exhaust port 2311 located within the muffler cavity 21. The orientation of the muffler intake port 222 is perpendicular to the orientation of the muffler exhaust port 2311. For example, the muffler intake port 222 may be oriented upwards, and the muffler exhaust port 2311 may be oriented to the left or right, etc.

[0047] Because the muffler inlet 222 and the muffler exhaust outlet 2311 are oriented perpendicularly, the airflow entering the muffler cavity 21 from the muffler inlet 222 does not flow directly to the muffler exhaust outlet 2311. Instead, it undergoes a certain path change and diffusion, forcing the sound waves to undergo multiple reflections and scatterings within the muffler cavity 21. This increases the path length and time of the sound waves within the muffler cavity 21, allowing the kinetic energy of the airflow to be further consumed and the energy of the sound waves to be further reduced, thus decreasing noise propagation. Furthermore, this design also improves the airflow stability within the muffler 2, preventing turbulence from causing additional noise.

[0048] Referring to Figures 5 to 8, in one embodiment of this application, the height of the muffler inlet 222 is higher than the bottom surface of the muffler cavity 21. The height of the muffler exhaust outlet 2311 is also higher than the bottom surface of the muffler cavity 21.

[0049] When the air pump assembly 100 is installed inside the refrigeration equipment 1000, if the air pump 1 draws air from spaces such as the storage compartment 1002, the airflow will carry a certain amount of moisture. This will cause the gas discharged from the air 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 internal temperature of the refrigeration equipment 1000 is low, if water from the silencer chamber 21 enters the silencer air inlet 22 or the silencer exhaust 23, it may cause the silencer air inlet 22 or the silencer exhaust 23 to freeze, leading to blockage of the silencer air inlet 22 and the silencer exhaust 23. This design ensures that the silencer air inlet 222 and the silencer exhaust 2311 are both higher than the bottom surface of the silencer chamber 21, thus preventing the silencer air inlet 22 and the silencer exhaust 23 from accumulating water when the air pump 1 stops operating, thereby avoiding the freezing of the silencer air inlet 22 and the silencer exhaust 23.

[0050] In addition, designing both the muffler inlet 222 and the muffler exhaust outlet 2311 at a height higher than the bottom surface can reduce the accumulation of impurities in the muffler inlet 22 and the muffler exhaust outlet 23. This helps to keep the muffler inlet 22 and the muffler exhaust outlet 23 clean, reducing airflow instability and additional noise caused by impurity accumulation. This design can extend the service life of the muffler 2 and reduce the frequency of maintenance.

[0051] Referring to Figures 5, 6, and 8, in one embodiment of this application, the shell 20 has an insertion hole 232 communicating with the silencing cavity 21. A metal tube 231 is inserted into the insertion hole 232. The shell 20 can be injection molded from plastic. During the injection molding process of the shell 20, the insertion hole 232 for the silencing air intake 22, the silencing cavity 21, and the silencing exhaust 23 is formed simultaneously. After the metal tube 231 with a small diameter is formed by metal processing, it is inserted into the insertion hole 232 on the shell 20 wall to form the silencing exhaust 23 of the muffler 2.

[0052] The inner diameter of the insertion hole 232 only needs to match the outer diameter of the metal tube 231, reducing the difficulty of molding finer holes in the injection molding process. Using metal processing to form the metal tube 231 ensures that it has a relatively fine diameter. The pluggable design of the metal tube 231 also allows for easy replacement of the entire muffler 2 if it wears out or is damaged during subsequent use, increasing maintenance convenience, reducing repair costs, and improving the durability of the muffler 2.

[0053] Referring to Figures 1, 5 to 8, in another embodiment of this application, a method for manufacturing a vacuum pump assembly 100 is provided. The method for manufacturing the vacuum pump assembly 100 includes the following steps.

[0054] S1: The metal tube 231 is placed in the mold cavity of the injection mold, and the injection mold is used to injection mold the housing 20 of the muffler 2.

[0055] S2: Inject liquid plastic into the mold cavity, and the liquid plastic at least covers part of the outer wall of the metal tube 231.

[0056] S3: After the plastic in the mold cavity cools and solidifies, the shell 20 with the metal tube 231 fixed is obtained by demolding.

[0057] Unlike the aforementioned embodiment where the metal tube 231 is inserted into the insertion hole 232 of the housing 20, this method involves directly wrapping the outer wall of the metal tube 231 with liquid plastic within an injection mold. This allows for a secure bond between the metal tube 231 and the housing 20 after the plastic cools. This integrated molding method ensures a tight fit between the metal tube 231 and the housing 20, avoiding loosening or leakage problems that may occur in traditional methods. This bonding method also offers high mechanical strength, enabling it to withstand stress and vibration during long-term use. Furthermore, this method simplifies assembly steps, improves production efficiency, and avoids problems such as loosening and seal failure that occur in traditional fixing methods. Therefore, this manufacturing method significantly improves the performance and reliability of the vacuum pump assembly 100 or the silencer 2, making it suitable for environments requiring high sealing and long-term stable operation.

[0058] Referring to Figures 1, 5, 6, and 8, in one embodiment of this application, the metal tube 231 is made of stainless steel. In other embodiments, the metal tube 231 may also be made of metals such as copper or aluminum.

[0059] Referring to Figures 1, 2, 5, and 9, in one embodiment of this application, the air pump assembly 100 includes a sleeve 102 located outside the housing 20. The sleeve 102 is fitted over a metal tube 231. The metal tube 231 extends outside the housing 20. The sleeve 102 can be made of a non-metallic material such as plastic. The sleeve 102 protects the metal tube 231, preventing damage or deformation to the metal tube 231.

[0060] Referring to Figures 1, 5 to 8, in one embodiment of this application, the silencer 2 is provided with a pump inlet channel 24. The pump inlet channel 24 includes a first channel end 241 and a second channel end 242. The first channel end 241 is used to connect to the target suction space of the suction pump 1. The second channel end 242 is used to connect to the pump inlet section 11.

[0061] Integrating the pump inlet channel 24 directly into the silencer 2 helps reduce the number of pipes and connecting parts, making the overall structure of the air pump assembly 100 more compact. Integrating the pump inlet channel 24 and the silencer 2 also helps reduce vibration and resonance problems caused by external connecting pipes. If the external connecting pipes are long or lack proper support, they may vibrate during the operation of the air pump 1. These vibrations not only affect the stability of the equipment but can also become additional noise sources. By integrating the pump inlet channel 24 into the silencer 2, the external connecting pipes can be eliminated as much as possible, reducing vibration noise. The integrated design of the silencer 2 and the pump inlet channel 24 helps confine the vibration and noise generated by the pump within the silencer 2, further reducing noise propagation and resonance effects. Furthermore, integrating the pump inlet channel 24 with the silencer 2 also reduces the length and tortuosity of the air pump 1's inlet pipe, providing a more direct airflow channel 91, reducing the formation of eddies and turbulence, and maintaining a stable intake flow rate.

[0062] Referring to Figures 1, 5 to 8, in one embodiment of this application, the housing 20 includes a housing body 201. A silencing cavity 21 is formed inside the housing body 201. A main body portion 245 of a pump inlet channel 24 is formed inside the housing body 201. A partition wall 246 is also formed inside the housing body 201, spaced between the silencing cavity 21 and the main body portion 245 of the pump inlet channel 24. The main body portion 245 of the pump inlet channel 24 penetrates the housing body 201. A first column 243 extends outward from one end of the main body portion 245 of the pump inlet channel 24 from the outer wall of the housing body 201. A second column 244 extends outward from the other end of the main body portion 245 of the pump inlet channel 24 from the outer wall of the housing body 201. A first channel end 241 communicating with the main body portion 245 of the pump inlet channel 24 is formed inside the first column 243. A second channel end 242 communicating with the main body portion 245 of the pump inlet channel 24 is formed inside the second column 244.

[0063] By integrating the main body 245 of the silencing cavity 21 and the pump inlet channel 24 into the housing body 201, the overall structure of the silencer 2 can be made more compact, reducing the volume of the components and the space occupied. It can also enhance the sealing performance of the air pump assembly 100 during the air intake process and reduce the possibility of gas leakage.

[0064] A partition wall 246 formed within the main body 201 isolates the silencing chamber 21 from the main body 245 of the pump inlet passage 24. The partition wall 246 not only structurally strengthens the overall rigidity of the housing 20, but also effectively prevents mutual interference between different chambers, ensuring the functional independence of each part. This helps maintain the airtightness of the system, reduces the propagation of noise and vibration between different chambers, improves noise control, and ensures the efficient operation of the silencer 2.

[0065] The first column 243 and the second column 244 respectively form the first channel end 241 and the second channel end 242 of the pump inlet channel 24. This design optimizes the input and output paths of the airflow. Through the rational layout of the columns and channels, the airflow can enter and exit the pump inlet channel 24 more smoothly, reducing unnecessary bends and obstacles, reducing airflow turbulence, improving airflow stability, and further improving the pump's working efficiency.

[0066] By integrating the pump air inlet channel 24, the silencer cavity 21, etc., into the housing 20 of the silencer 2, uniform materials and manufacturing processes can be used for production. In particular, the use of injection molding technology can simplify the manufacturing process, reduce production costs, improve the fitting accuracy between components, and enhance the overall performance and reliability of the equipment.

[0067] Referring to Figures 1 and 9, in one embodiment of this application, the pump outlet 12 and the silencer inlet 22 are spaced apart and opposite to each other. The pump inlet 11 and the second channel end 242 are spaced apart and opposite to each other. The vacuum pump assembly 100 includes an outlet connecting pipe 7 connecting the pump outlet 12 and the silencer inlet 22. The vacuum pump assembly 100 includes an inlet connecting pipe 8 connecting the pump inlet 11 and the second channel end 242.

[0068] This application uses a spaced-apart arrangement between the pump outlet 12 and the silencer inlet 22, and between the pump inlet 11 and the second channel end 242, connected by connecting pipes. This design avoids bending and crossing of the connecting pipes, ensuring good accessibility at each connection point. During installation and subsequent maintenance, technicians can easily disassemble or install each connecting pipe. This design also provides a clear airflow path, ensuring clear separation of the pump inlet and outlet channels, reducing installation complexity and the risk of incorrect pipe connections. The spaced-apart design also ensures the connecting pipes remain stable after installation, preventing damage or detachment caused by pipe swaying or vibration due to excessively long pipes.

[0069] Referring to Figures 1 and 9, in one embodiment of this application, the outlet connection pipe 7 is an elastic pipe. The inlet connection pipe 8 is an elastic pipe. The elastic pipe 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 use of flexible materials in the elastic pipe also reduces the mechanical resonance that may occur during the operation of the vacuum pump 1, thereby extending the service life of the pipes and reducing the vibration and noise of the vacuum pump assembly 100. During installation, the elastic pipe can better fit the connecting parts, and the deformable properties of its material allow for easier tight fitting during connection, ensuring the airtightness of the connection between the outlet connection pipe 7, the inlet connection pipe 8, the vacuum pump 1, and the silencer 2.

[0070] Referring to Figures 1, 3, 5, and 9, in one embodiment of this application, the housing body 201 includes a first wall 204 near the vacuum pump 1. The vacuum pump 1 includes a second wall 15 spaced apart from and opposite the first wall 204. The second column 244 and the silencer air 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.

[0071] By placing both the pump inlet 11 and the pump outlet 12 of the vacuum pump 1 on the same wall surface, which is opposite to the wall surface of the housing 201, the length of the inlet connecting pipe 8 and the outlet connecting pipe 7 can be reduced. This facilitates the connection between the pump outlet 12 and the silencer inlet 22, and 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 and optimizes airflow management and system layout, but also improves the overall efficiency and performance of the equipment, reduces airflow interference, and enhances the system's sealing and maintainability.

[0072] Referring to Figures 1, 2, and 10, in one embodiment of this application, the vacuum pump assembly 100 includes a mounting box 3. The vacuum pump 1 is disposed within the mounting box 3. The silencer 2 is disposed within the mounting box 3. The housing 20 of the silencer 2 is disposed within the mounting box 3. The mounting box 3 is enclosed. By placing both the vacuum pump 1 and the silencer 2 within the mounting box 3, the vibration of the vacuum pump 1 and the transmission of sound waves can be further isolated using the mounting box 3, thereby reducing the vibration and noise of the vacuum pump assembly 100.

[0073] Referring to Figures 1, 2, and 9, in one embodiment of this application, the wall of the mounting box 3 has a mounting through hole 33 that mates with the metal tube 231. One end of the metal tube 231 is inserted into the mounting through hole 33. Gas inside the silencing cavity 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 through hole 33 in the wall of the mounting box 3, gas from the silencing cavity 21 can be discharged to the outside of the mounting box 3.

[0074] Referring to Figures 1, 2, and 9, in one embodiment of this application, the sleeve 102 is at least partially placed within the mounting through hole 33. One end of the sleeve 102 may abut against the outer wall of the housing 20, and the other end may be flush with or longer than the end of the metal tube 231. By ensuring that the sleeve 102 completely covers the peripheral wall of the portion of the metal tube 231 located outside the housing 20, it is possible to prevent the metal tube 231 from colliding with the wall of the mounting box 3 when it is inserted into the mounting through hole 33, thus better protecting the metal tube 231 and preventing damage or deformation.

[0075] Referring to Figures 1, 2, 9, and 10, in one embodiment of this application, the mounting box 3 includes a box body 31. The box body 31 has an open opening 37 at its upper end. The mounting box 3 includes a cover 32 for opening and closing the open opening 37. An air pump 1 is disposed within the box body 31. A silencer 2 is disposed within the box body 31. The silencer 2 may have only its lower part located within the box body 31, while its upper part may be located within the cover 32. The silencer 2 is located above the air pump 1. A housing 20 is disposed within the box body 31. The housing 20 is located above the air pump 1. The bottom wall of the silencer 2, i.e., the bottom wall of the housing body 201, is a first wall 204. The top wall of the air pump 1 is a second wall 15.

[0076] Referring to Figure 1, in this application, the vertical direction can refer to the height direction of the mounting box 3, the front-back direction can refer to the thickness direction of the mounting box 3, and the left-right direction can refer to the width direction of the mounting box 3. The orientation of the open opening 37 of the box body 31 is upward.

[0077] Referring to FIG1, in one embodiment of this application, an elastic washer 103 is provided between the top wall of the housing 20 and the cover 32. The cover 32 or the top wall of the housing 20 has a mounting groove for installing the elastic washer 103. By providing the elastic washer 103, the vibration and noise transmission of the vacuum pump 1 can be reduced.

[0078] Referring to Figures 1, 2, 5, and 6, in one embodiment of this application, a first pillar 243 is disposed on the top wall of the shell body 201. A silencer and exhaust portion 23 is disposed on the side wall of the shell body 201. The side wall of the cover 32 at least partially covers the side wall of the shell body 201. The side wall of the cover 32 has a mounting through hole 33 that mates with a metal tube 231. The metal tube 231 is inserted into the mounting through hole 33. The cover 32 has a mounting elongated hole 36 that mates with the first pillar 243. The first pillar 243 extends outside the mounting box 3 through the mounting elongated hole 36. The length direction of the mounting elongated hole 36 is consistent with the extension direction of the metal tube 231. The diameter of the mounting elongated hole 36 on the side closer to the metal tube 231 is smaller than the diameter of the mounting elongated hole 36 on the side farther from the metal tube 231.

[0079] During installation, the muffler 2 can be moved upward relative to the cover 32, allowing the first column 243 to pass through the larger diameter portion of the mounting elongated hole 36. When the metal tube 231 aligns with the mounting through hole 33 on the side wall of the cover 32, the muffler 2 can be moved towards the mounting through hole 33, gradually inserting the metal tube 231 into the mounting through hole 33. During this process, the first column 243 gradually moves from the larger diameter portion of the mounting elongated hole 36 to the smaller diameter portion, until the outer wall of the first column 243 abuts against the inner wall of the smaller diameter portion of the mounting elongated hole 36. By setting the mounting elongated hole 36 with a diameter that varies with length, it is easy for the first column 243 to be inserted from the larger diameter portion of the mounting elongated hole 36. Subsequently, as the first column 243 moves, the diameter of the mounting elongated hole 36 decreases, allowing for better engagement with the first column 243 and achieving fixation of the first column 243.

[0080] The vacuum pump 1 is installed inside the box body 31. The upper end of the air inlet connecting pipe 8 is connected to the silencer air inlet 22 on the bottom wall of the silencer 2, and the upper end of the air outlet connecting pipe 7 is connected to the second column 244. The assembly consisting of the silencer 2, the box cover 32, the air inlet connecting pipe 8, and the air outlet connecting pipe 7 can be moved downwards so that the lower end of the air inlet connecting pipe 8 is connected to the pump air inlet 11 on the top wall of the vacuum pump 1, and the lower end of the air outlet connecting pipe 7 is connected to the pump air outlet 12. Then, the box cover 32 can be connected to the box body 31 by screws or other connectors. 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 of the vacuum pump 1 and the outward transmission of noise.

[0081] Referring to Figures 1, 3, 5, and 9, the pump outlet section 12 includes a first insertion post 13 extending from the wall of the vacuum pump 1 toward the silencer air inlet section 22. An outlet channel is formed inside the first insertion post 13. The silencer air inlet section 22 includes a third column 221 extending from the wall of the housing 20 toward the pump outlet section 12. An inlet channel is formed inside the third column 221. One end of the outlet connecting pipe 7 is inserted into the third column 221, and the other end is inserted into the first insertion post 13. The outlet connecting pipe 7 can limit the movement of the vacuum pump 1 toward the silencer air inlet section 22, and can also limit the circumferential movement of the vacuum pump 1 toward the first insertion post 13, thereby reducing the vibration of the vacuum pump 1.

[0082] The pump inlet 11 includes a second insertion post 14 extending from the wall of the self-pumping pump 1 toward the second column 244. An air inlet channel is formed inside the second insertion post 14. The second column 244 extends from the wall of the housing 20 toward the pump inlet 11. One end of the air inlet connecting pipe 8 is inserted into the second column 244, and the other end is inserted into the second insertion post 14. The air inlet connecting pipe 8 can limit the movement of the self-pumping pump 1 toward the second column 244, and also limits the circumferential movement of the self-pumping pump 1 toward the second insertion post 14, thereby reducing the vibration of the self-pumping pump 1.

[0083] The first insertion post 13 and the second insertion post 14 are both located on the top wall of the air pump 1 and extend upwards. The second column 244 and the third column 221 are both located on the bottom wall of the silencer 2 and extend downwards. The first insertion post 13 and the third column 221 are located on the same axis and are spaced apart from each other. The second insertion post 14 and the second column 244 are located on the same axis and are spaced apart from each other.

[0084] The upper end of the exhaust connection pipe 7 is inserted into the third column 221, and the upper end of the exhaust connection pipe 7 can abut against the bottom wall of the muffler 2. The lower end of the exhaust connection pipe 7 is inserted into the first insertion post 13, and the lower end of the exhaust connection pipe 7 can abut against the top wall of the vacuum pump 1. The exhaust connection section can limit the upward movement of the vacuum pump 1, as well as its circumferential movement in the front-back, left-right, and right directions.

[0085] The upper end of the air intake connecting pipe 8 is inserted into the outer side of the second column 244, and the upper end of the air intake connecting pipe 8 can abut against the bottom wall of the muffler 2. The lower end of the air intake connecting pipe 8 is inserted into the outer side of the second insertion post 14, and the lower end of the air intake connecting pipe 8 can abut against the top wall of the vacuum pump 1. The air intake connecting pipe 8 can limit the upward movement of the vacuum pump 1, as well as its circumferential movement in the front-back, left-right, and right directions. Through the air intake connecting pipe 8 and the air outlet connecting pipe 7, the vacuum pump 1 can be better limited, reducing its vibration and noise.

[0086] Referring to Figures 1, 5 to 7, in one embodiment of this application, the muffler 2 may include a housing cover 202. An opening may be formed at the upper end of the housing body 201. The housing cover 202 can be used to open and close the opening at the upper end of the housing body 201. The pump inlet passage 24 can be fixed to the housing body 201. The housing cover 202 may have a clearance opening 205 that mates with a first post 243, into which the first post 243 can be inserted. A housing seal may be provided between the housing cover 202 and the housing body 201. The housing seal can seal the gap between the housing cover 202 and the housing body 201, improving the sealing performance of the muffler 2 and reducing noise.

[0087] Referring to Figures 1, 9, and 11, in one embodiment of this application, the air outlet connecting pipe 7 includes an air outlet pipe section 71. The air inlet end of the air outlet pipe section 71 is located below its air outlet end. The vacuum pump assembly 100 also includes a suspension member 9 movably disposed within the air outlet pipe section 71. When the vacuum pump 1 discharges air, the suspension member 9 is suspended within the air outlet pipe section 71 by the airflow within the air outlet pipe section 71.

[0088] When the air pump 1 starts, the airflow from the pump outlet 12 to the silencer inlet 22 causes the suspension component 9 to rise and suspend in the outlet pipe section 71. At this time, the kinetic energy of the airflow is partially converted into the potential energy of the suspension component 9. This energy conversion can consume the energy of the airflow and reduce the noise and vibration of the airflow. The suspension component 9, suspended in the outlet pipe section 71, also generates a certain amount of aerodynamic resistance, increasing the damping effect in the gas flow, reducing the airflow velocity in the outlet pipe section 71, which helps to mitigate the impact and fluctuation of the airflow, thereby reducing the generation of vibration and noise.

[0089] As the airflow velocity decreases, the pressure within the exhaust pipe section 71 and the silencing cavity 21 also decreases. Lower pressure effectively reduces airflow impact and gas turbulence, further reducing noise in the gas flow and mitigating vibration impact on surrounding structures. Due to the pressure drop within the exhaust pipe section 71 and the silencing cavity 21, the overall rigidity of the exhaust pipe section 71 decreases. This increased flexibility effectively weakens the vibration transmission path, reducing its sensitivity to vibration transmission and allowing for better absorption and mitigation of vibrations, thus reducing the transmission of vibrations to other parts.

[0090] Setting a suspension element 9 in the air outlet section 71 not only converts the energy of the airflow into the potential energy of the suspension element 9, but also effectively reduces the vibration and noise transmission of the air pump 1 by increasing airflow damping, reducing pressure and the rigidity of the air outlet section 71.

[0091] Referring to Figures 1, 9, and 11, in one embodiment of this application, an airflow channel 91 for airflow is formed inside the suspension member 9. The presence of the airflow channel 91 can disperse and slow down the speed and pressure of the airflow, thereby further reducing vibration and noise caused by the airflow.

[0092] Referring to Figures 1, 9, and 11, in one embodiment of this application, the outer wall of the suspension member 9 and the inner wall of the air outlet section 71 are separated by an airflow space. The outer diameter of the suspension member 9 is smaller than the inner diameter of the air outlet section 71.

[0093] The suspension element 9 can be tubular. The extension direction of the tubular suspension element 9 can be consistent with the extension direction of the air outlet section 71. The length of the suspension element 9 can be greater than the inner diameter of the air outlet section 71 to prevent the suspension element 9 from rotating up and down inside the air outlet section 71 under the action of airflow. The air outlet section 71 is fitted over the tubular suspension element 9.

[0094] By leaving an airflow space between the outlet pipe section 71 and the suspension component 9, the physical contact between the suspension component 9 and the outlet pipe section 71 is reduced, thus reducing the direct transmission of vibration. This effectively reduces the vibration transmission caused by mechanical contact, thereby improving the vibration reduction effect of the system and reducing the vibration and noise of the suction pump 1 during operation. The difference between the outer and inner diameters of the suspension component 9 allows the airflow to be evenly distributed around the suspension component 9. The pressure difference of the airflow helps to balance the attitude of the suspension component 9, maintaining the suspension position of the suspension component 9 in the airflow space, thereby stabilizing the suspension component 9 and preventing the suspension component 9 from swaying or shifting due to uneven airflow.

[0095] Referring to Figures 1, 9, and 11, in one embodiment of this application, the suspension 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 suspension 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 suspension member 9.

[0096] The inner diameters of both the inlet and outlet ends of the exhaust pipe section 71 are smaller than the outer diameter of the suspension component 9, ensuring that the suspension component 9 can only slide between these two ends and will not slide out of the pipe section. This effectively limits the range of motion of the suspension component 9 and avoids problems such as it detaching from the pipe or getting stuck. Since the suspension component 9 can slide up and down within the exhaust pipe section 71, its position automatically adjusts according to changes in airflow pressure. When the airflow increases, the suspension component 9 moves upward; when the airflow decreases, the suspension component 9 moves downward. This flexible movement helps buffer airflow impact, reduce vibration transmission, and lower airflow noise.

[0097] The specific weight and dimensions of the suspension component 9 can be determined based on the airflow velocity from the pump outlet 12 to the muffler inlet 22.

[0098] Referring to Figures 1, 9, and 11, in one embodiment of this application, the suspension element 9 is made of an elastic material. The suspension element 9, made of an elastic material, can effectively absorb and buffer the impact force generated by airflow or vibration. When the suspension element 9 is propelled or vibrated by airflow, the elastic material can absorb some energy through deformation, reducing the transmission of mechanical vibration, thereby reducing the overall vibration of the air pump assembly 100 and greatly improving the vibration reduction and noise reduction effect. The soft properties of the elastic material also reduce direct hard contact between the suspension element 9 and other components, reducing wear between mechanical parts. This not only improves the durability of the suspension element 9 but also protects the air outlet pipe section 71 and other related components, extending the service life of the entire air pump assembly 100. As mentioned above, the air outlet connecting pipe 7 can be an elastic pipe.

[0099] Referring to Figures 1, 9, and 11, in one embodiment of this application, the vent pipe section 71 is arranged vertically or inclined. The vent connecting pipe 7 can extend vertically upward or inclined upward as a whole, or only the vent pipe section 71 can extend vertically or inclined upward. Preferably, the vent connecting pipe 7 extends vertically upward as a whole, and the vent pipe section 71 is equivalent to the vent connecting pipe 7.

[0100] Referring to Figures 1, 9, and 11, in one embodiment of this 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 silencer 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, and the mounting box 3 includes a box cover 32 for opening and closing the open opening 37. The vacuum pump 1 and the silencer 2 are both disposed inside the box body 31, with the silencer 2 located above the vacuum pump 1. The silencer air inlet 22 is disposed on the bottom wall of the silencer 2, and the pump outlet 12 is disposed on the top wall of the vacuum pump 1, with the silencer air inlet 22 and the pump outlet 12 spaced apart and opposite each other.

[0101] Referring to Figures 1, 5 to 7 and 9, in one embodiment of this application, the length and radial dimension of the air outlet connecting pipe 7 are matched with the volume of the silencing cavity 21 to form an insert-type Helmholtz resonator.

[0102] The Helmholtz resonator not only absorbs noise but also effectively reduces vibrations caused by airflow pulsation. When airflow passes through the outlet connection pipe 7, the insert-type Helmholtz resonator can suppress pressure fluctuations caused by airflow disturbances, reduce the vibration transmission of airflow impact to the system structure, and thus improve the vibration reduction effect.

[0103] By adjusting the length and radial dimension of the exhaust connection pipe 7 and the volume of the silencing cavity 21, the resonant frequency of the tube-type Helmholtz resonator formed by the exhaust connection pipe 7 and the silencing cavity 21 can be flexibly adjusted to optimize the processing for different noise frequencies and vibrations, thereby improving the system's noise and vibration suppression capabilities.

[0104] The parameter design of the air outlet connecting pipe 7 and the silencer chamber 21 can satisfy the following formula:

[0105] Where f represents the resonant frequency (Hz) required to be achieved by the intubation-type Helmholtz resonator formed by the exhaust pipe 7 and the silencing cavity 21. The intubation-type Helmholtz resonator formed by the exhaust pipe 7 and the silencing cavity 21 can be synchronized with the noise frequency generated by the air pump 1. When the noise frequency matches the resonant frequency of the Helmholtz resonator, the sound wave passes through the neck of the resonator, i.e., the exhaust pipe 7, and excites the air inside the silencing cavity 21 to vibrate. This vibration process converts sound energy into heat energy or dissipates it, reducing the noise energy and achieving a noise reduction effect.

[0106] v refers to the speed of sound, which is usually 343 m / s.

[0107] A indicates the cross-sectional area of ​​the gas connection pipe 7.

[0108] V refers to the volume of the silencing cavity 21. L refers to the effective length of the exhaust connection pipe 7. The effective length typically includes the actual length of the exhaust connection pipe 7 and the acoustic effect correction length near the opening of the exhaust connection pipe 7. It is usually a portion of the opening radius of the exhaust connection pipe 7 (usually 0.61 times the opening radius) as the correction amount. By adjusting the cross-sectional area and length of the exhaust connection pipe 7 and the volume of the silencing cavity 21, a tube-type Helmholtz resonator with a specific resonant frequency can be constructed to absorb noise of a specific frequency from the air pump 1.

[0109] Referring to Figures 1, 5 to 7, and 9, in one embodiment of this application, the silencer 2 of the constructed in-tube Helmholtz resonator may be provided with a silencer exhaust section 23 communicating with the silencer cavity 21. The silencer exhaust section 23 includes a metal tube 231. The inner diameter of the metal tube 231 is less than 0.7 mm. Gas in the silencer cavity 21 is discharged through the metal tube 231. The arrangement of the silencer exhaust section 23 and the metal tube 231 of the silencer 2 can be as described above. Because the diameter of the metal tube 231 is small, the silencer cavity 21 is approximately closed, and the exhaust has a low impact on the resonance of the silencer cavity 21 of the constructed in-tube Helmholtz resonator.

[0110] Referring to Figures 1, 9, and 12 to 14, in one embodiment of this application, the air pump assembly 100 further includes a vibration damping member 4. The vibration damping member 4 is fixed within the mounting box 3. A receiving cavity 40 is formed inside the vibration damping member 4. The vibration damping member 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.

[0111] The design of the vibration damper 4 and the receiving cavity 40 of the air pump 1 simplifies pump installation, eliminating the need for additional complex fasteners. The pump can be directly placed and fixed within the vibration damper 4, improving installation efficiency. Since the receiving cavity 40 is integrally formed from the vibration damper 4, it not only secures the air pump 1 but also prevents direct contact between the air pump 1 and the mounting box 3, simplifying the installation structure, resulting in a compact design, reduced space occupation, low cost, and easy manufacturing. This solution effectively absorbs and attenuates the vibration generated by the air pump 1 during operation, thereby reducing vibration transmission to the mounting box 3 and preventing adverse effects of vibration on other components of the system.

[0112] Referring to Figures 1, 9, and 12 to 14, in one embodiment of this application, the vibration damping member 4 includes a vibration damping bottom wall 41 that abuts against the bottom wall of the air pump 1. The vibration damping bottom wall 41 is provided with a downwardly protruding vibration damping seat 411. The vibration damping seat 411 abuts against the bottom wall of the mounting box 3.

[0113] The dual design of the damping base wall 41 and the damping seat 411 helps to isolate vibration sources. During operation, some of the vibration from the vacuum pump 1 is absorbed by the damping base wall 41, and the remaining vibration is further attenuated when transmitted to the bottom wall of the mounting box 3 via the damping seat 411. This layered damping structure significantly reduces vibration transmission. The protruding design of the damping seat 411 provides better stable support for the vacuum pump 1 while maintaining damping performance, preventing system resonance caused by vibration accumulation.

[0114] Referring to Figures 1, 9, and 12 to 14, in one embodiment of this application, the vibration damping seat 411 includes a vibration damping support wall 412. The vibration damping support wall 412 abuts against 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 against the circumferential side wall of the limiting post 38.

[0115] The vibration damping support wall 412 directly abuts against the bottom wall of the mounting box 3, limiting the downward movement of the vibration damper 4 and enabling the vibration damper 4 to provide basic support and vibration damping for the air pump 1. The vibration damping limiting wall 413 abuts against the circumferential side wall of the limiting post 38, thus limiting the lateral movement of the vibration damper 4, enhancing its lateral stability and preventing it from moving due to vibration or external force during the operation of the air pump 1. The vibration damper 4 provides lateral limitation for the air pump 1 and ensures that the air pump 1 remains in the correct position, preventing displacement or rotation during vibration.

[0116] The vibration damping and limiting wall 413 is spaced apart from the bottom wall of the mounting box 3. The vibration damping support wall 412 for longitudinal limiting and the vibration damping and limiting wall 413 for lateral limiting are set separately, which can reduce the vibration transmission from the vibration damping component 4 to the mounting box 3. Only the vibration damping support wall 412 directly transmits vibration to the bottom wall of the mounting box 3, while the vibration damping and limiting wall 413 directly transmits vibration to the limiting post 38 and does not directly transmit it to the bottom wall of the mounting box 3, thereby improving the vibration damping effect on the air pump 1 and reducing the vibration of the mounting box 3.

[0117] Referring to Figures 13 and 14, in one embodiment of this application, the vibration damping limiting wall 413 is a closed ring with its ends connected. The vibration damping support wall 412 is spaced apart from the vibration damping limiting wall 413, and the vibration damping support wall 412 surrounds the outside of the vibration damping limiting wall 413.

[0118] The closed-loop annular vibration damping and limiting wall 413 forms a continuous structure that can evenly distribute and withstand vibration energy in all directions. This ensures that regardless of the direction in which the damper 4 is subjected to vibration or impact, the vibration damping and limiting wall 413 can prevent the damper 4 from shifting or rotating through contact with the limiting post 38. The closed-loop annular vibration damping and limiting wall 413 provides a clearly defined limiting and supporting area. Installers only need to insert the limiting post 38 into the area enclosed by the annular vibration damping and limiting wall 413 to achieve the fixation and limiting of the damper 4, without requiring excessive adjustment or alignment, thus improving installation efficiency.

[0119] Vibration damping support wall 412 surrounds the outside of vibration damping limiting wall 413, with the two spaced apart, further enhancing the support and limiting effects. Vibration damping support wall 412 primarily provides vertical support and vibration damping, while vibration damping limiting wall 413 enhances the horizontal limiting effect through its ring design. Together, they make vibration control of the equipment more efficient in both the vertical and horizontal directions.

[0120] Referring to Figure 13, in one embodiment of this application, the vibration damping support wall 412 has a notch 418. The notch 418 design of the vibration damping support wall 412 provides a vibration damping buffer zone, allowing the vibration damping limiting wall 413 to undergo a certain degree of elastic deformation, thereby further absorbing and dispersing vibration energy and increasing the vibration damping effect. The notch 418 design not only improves the buffering performance of the vibration damper 4 but also reduces stress concentration caused by excessive vibration, making the air pump assembly 100 operate more smoothly. In other embodiments, the vibration damping support wall 412 can also be a closed ring.

[0121] Referring to Figures 13 and 14, in one embodiment of this application, the vibration damping limiting wall 413 includes a first annular wall 414 that abuts against 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 connects the first annular wall 414 and the second annular wall 415. A second vibration damping rib 417 connects the second annular wall 415 and the vibration damping support wall 412.

[0122] By tightly connecting the first annular wall 414 to the limiting post 38, the lateral displacement of the vibration damper 4 is restricted, avoiding the offset problem caused by the vibration of the vacuum pump 1. The second annular wall 415 and the first annular wall 414 are connected by the first damping rib 416, making the entire limiting structure more stable. The interval between the first annular wall 414 and the second annular wall 415 is smaller than the interval between the second annular wall 415 and the vibration damping support wall 412. This progressive structural design can distribute vibration force in layers, ensure limiting, and avoid stress concentration caused by excessive limiting of the equipment.

[0123] By employing a multi-layered ring wall structure, vibration damping performance is significantly improved, with each ring wall capable of withstanding vibration impacts from different directions and amplitudes. This provides the system with more effective vibration absorption and energy dispersion, significantly reducing vibration energy transmission. The first damping rib 416 and the second damping rib 417 further enhance the stability and vibration damping effect of this multi-layered structure. As a structure connecting the ring walls, the damping ribs provide support and can also undergo elastic deformation during vibration, thereby absorbing vibration forces and effectively mitigating vibration impacts.

[0124] Referring to Figures 1, 9, and 12 to 14, in one embodiment of this application, the vibration damping member 4 includes vibration damping sidewalls 42 that abut against the front, rear, left, and right sidewalls of the air pump 1. The vibration damping sidewalls 42 are spaced apart from the wall of the mounting box 3. The vibration damping sidewalls 42 include vibration damping limiting ribs 421 protruding into the wall of the mounting box 3.

[0125] The vibration-damping sidewall 42 directly abuts against the front, rear, left, and right sidewalls of the air pump 1, providing all-around vibration protection. This design can absorb vibration energy from different directions, whether front-to-back or left-to-right. The vibration-damping sidewall 42 effectively buffers the vibration, thereby improving the overall vibration reduction effect. The tight abutment between the vibration-damping sidewall 42 and the four sidewalls of the air pump 1 also effectively prevents the air pump 1 from shifting or shaking during operation, ensuring the stable fixation of the air pump 1 and preventing it from moving or tilting.

[0126] The spacing between the vibration-damping sidewall 42 and the wall of the mounting box 3 provides additional deformation space for the vibration-damping material, ensuring that the vibration-damping sidewall 42 will not rub against the wall of the mounting box 3 during vibration, thus avoiding noise or wear problems caused by vibration friction. When the air pump 1 vibrates, the vibration-damping sidewall 42 can deform to a certain extent within this spacing, thereby absorbing more vibration force and reducing the transmission of vibration to the mounting box 3, effectively protecting both the air pump 1 and the mounting box 3.

[0127] The vibration damping and limiting rib 421 can abut against the wall of the mounting box 3 or against the structure fixed inside the mounting box 3. The design of the vibration damping and limiting rib 421 not only improves the limiting effect, but also provides stronger impact protection for the vibration damper 4, effectively disperses the impact force, and reduces the friction and wear between the vibration damper 4 and the wall of the mounting box 3 or the internal structure of the mounting box 3.

[0128] Referring to Figures 1, 9, and 12, in one embodiment of this application, the vibration damping member 4 includes a vibration damping upper wall 43. The vibration damping upper wall 43 abuts against a portion of the top wall of the air pump 1. The upper end of the vibration damping member 4 has a mounting opening 44. The air pump 1 is placed in the receiving cavity 40 through the mounting opening 44.

[0129] The upper vibration damping wall 43 can undergo elastic deformation, temporarily enlarging the installation opening 44 during installation. This allows the air pump 1 to be easily inserted into the receiving cavity 40 of the vibration damper 4, simplifying the installation process and enabling rapid installation of the air pump 1. After the air pump 1 is inserted into the receiving cavity 40, the upper vibration damping wall 43 returns to its initial shape, closely adhering to and abutting against the top wall of the air pump 1, providing fixation and limiting functions.

[0130] This flexible design avoids complex fastening or additional mechanical limiting mechanisms, improving installation efficiency and convenience. The vibration-damping upper wall 43 not only provides a limiting function, but its elastic material also offers additional vibration damping capabilities. During operation, the top wall of the vacuum pump 1 may experience vertical vibrations. The elastic deformation of the vibration-damping upper wall 43 effectively absorbs and disperses these vibrations, reducing their transmission to other components.

[0131] Referring to Figures 15 to 17, in one embodiment of this application, the vacuum 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 vacuum 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 vacuum pump 1 within the mounting box 3 via the connecting portion 51 and the elastic arm 52.

[0132] Suspending the vacuum pump 1 within the mounting box 3 via the elastic arm 52 effectively reduces the transmission of vibrations generated during equipment operation to the mounting box 3 and external structures. Because the elastic arm 52 possesses elastic deformation capabilities, it absorbs and buffers vibrations generated by the vacuum pump 1 during operation, significantly reducing the transmission of vibration energy to the wall of the mounting box 3. This avoids direct frictional contact between the vacuum pump 1 and the mounting box 3, reducing wear on component surfaces and preventing noise or wear caused by friction. The elastic arm 52 is integrally molded from elastic material, simplifying processing, facilitating molding, and reducing costs.

[0133] Referring to Figures 15 to 17, in one embodiment of this application, a receiving space 53 is formed inside the connecting portion 51. A receiving opening 54 is formed at the upper end of the connecting portion 51. The air pump 1 is placed in the receiving space 53 at least at its lower part through the receiving opening 54.

[0134] By forming an accommodating opening 54 and an internal accommodating space 53, the connecting part 51 allows installers to directly insert the lower part of the vacuum pump 1 into the accommodating space 53 through the accommodating opening 54 without complicated fixing or alignment steps, reducing the operational complexity of the installation process and improving installation efficiency. Once the lower part of the vacuum pump 1 is placed into the accommodating space 53 of the connecting part 51, it receives sufficient support and fixation. The accommodating space 53 provides a stable space, allowing the lower part of the vacuum pump 1 to be firmly embedded within it, preventing 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 is evenly distributed across the structure of the connecting part 51, improving the overall load-bearing capacity and stability.

[0135] Referring to Figures 15 to 18, in one embodiment of this application, the elastic arm 52 includes a free end 524 away from the connecting portion 51. The free end 524 of the elastic arm 52 is provided with an elastic limiting protrusion 523. A fixing hole 39 is formed in the wall of the mounting box 3. The outer diameter of the elastic limiting protrusion 523 is at least partially larger than the diameter of the fixing hole 39. The elastic limiting protrusion 523 passes through the fixing hole 39 from the inside of the mounting box 3 through elastic deformation and abuts against the outer side of the wall of the mounting box 3.

[0136] The elastic limiting protrusion 523 is designed with an outer diameter larger than the diameter of the fixing hole 39. This means that during installation, the protrusion must undergo elastic deformation to pass through the fixing hole 39. After passing through, the elastic limiting protrusion 523, due to its larger outer diameter than the hole diameter, will tightly abut against the outside of the mounting box 3, forming a stable connection. This design ensures a firm connection between the elastic arm 52 and the wall of the mounting box 3, effectively preventing the equipment from loosening or shifting during operation.

[0137] The installation process is simplified thanks to the design of the elastic limiting protrusion 523. Installers simply press the protrusion through the fixing hole 39 using its elastic deformation, eliminating the need for additional screws, nuts, or other fasteners. This integrated connection reduces installation steps and improves efficiency. When the vacuum pump 1 vibrates or experiences impact during operation, the elastic protrusion absorbs and buffers the vibration through its elastic deformation, reducing the impact of vibration on the mounting box 3 wall and the elastic arm 52, further enhancing the system's vibration damping effect and ensuring stable operation of the vacuum pump 1.

[0138] Referring to Figures 15 to 17, in one embodiment of this 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 mounting box 3 wall above the connecting portion 51 to provide an upward pulling force to the connecting portion 51. The free end 524 of the lower elastic arm 522 is connected to the mounting box 3 wall below the connecting portion 51 to provide a downward pulling force to the connecting portion 51.

[0139] The upper elastic arm 521 and the lower elastic arm 522 provide upward and downward pulling forces to the connecting part 51, respectively. This bidirectional pulling force design ensures that the connecting part 51 is more stable in the mounting box 3 and will not be displaced or loosened due to force in one direction.

[0140] With the combined action of the elastic arms 52 on both the upper and lower sides, the air pump 1 can obtain stable support in multiple directions, reducing the possibility of the air pump 1 moving up and down during operation, ensuring that the air pump 1 always stays in the correct position during operation, and avoiding displacement or tilting caused by vibration or impact.

[0141] Referring to Figures 15 to 17, in one embodiment of this 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 that are circumferentially spaced along the connecting portion 51.

[0142] By distributing four elastic arms 52 providing upward tension circumferentially around the connecting portion 51, the connecting portion 51 can obtain uniform tension in four directions. The tension applied to the connecting portion 51 by each elastic arm 52 is balanced with each other, effectively preventing tilting or displacement due to force in one direction. This ensures that the air pump 1 remains stable under multi-directional vibration or impact environments, guaranteeing stable suspension support for the air pump 1 during vibration or external impact, and reducing the possibility of the air pump 1 swaying or shaking in any direction.

[0143] Referring to Figures 15 and 16, in one embodiment of this application, the first elastic arm 5211 is located on the front side of the connecting portion 51 and is connected to the middle 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 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 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 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 of the bottom wall of the connecting portion 51.

[0144] Since the four elastic arms 52 are located in the front, back, left, and right directions of the connecting part 51, and all the elastic arms 52 are connected to the upper middle part of the wall, the tension is evenly distributed. This symmetrical distribution design effectively prevents the connecting part 51 from shifting or tilting under 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.

[0145] The lower elastic arm 522 is located at the bottom center and provides vertical restraint for the connection part 51, enhancing the vertical vibration reduction effect. The elastic arms 52 are distributed around the perimeter and bottom of the air pump 1, providing uniform tension and support to ensure that the air pump 1 remains stable under multi-directional vibration or impact conditions.

[0146] Referring to Figures 15 to 18, in one embodiment of this application, the free end 524 of the upper elastic arm 521 is connected to the cover 32. An elastic limiting protrusion 523 is provided at the upper end of the upper elastic wall, and the cover 32 has a fixing hole 39 that cooperates with the elastic limiting protrusion 523 of the upper elastic wall.

[0147] The lower middle part of the front, back, left and right side walls of the box cover 32 is respectively formed with a first fixing hole, a second fixing hole, a third fixing hole and a fourth fixing hole. 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 limiting protrusions 523 of the first elastic arm 5211, the second elastic arm 5212, the third elastic arm 5213 and the fourth elastic arm 5214.

[0148] The free end 524 of the lower elastic arm 522 is connected to the bottom wall of the shell body 201. An elastic limiting protrusion 523 is provided at the lower end of the lower elastic arm 522, and a fixing hole 39 is formed in the middle of the bottom wall of the shell body 201 to cooperate with the elastic limiting protrusion 523 of the lower elastic arm 522.

[0149] Fixing holes 39 that mate with the elastic arm 52 are formed by the cover 32 and the shell body 201, which facilitates the installation and fixing of the elastic arm 52, provides uniform tension and support for the air pump 1, and ensures that the air pump 1 remains stable under multi-directional vibration or impact conditions.

[0150] Referring to Figures 15 and 16, in one embodiment of this application, the connecting portion 51 is made of an elastic material. The connecting portion 51 and the elastic arm 52 are integrally formed from the elastic material. In other embodiments of this application, the connecting portion 51 may also be a rigid structure.

[0151] Referring to Figures 1, 9, 15, and 16, in one embodiment of this application, the connecting portion 51 can replace the aforementioned vibration damping member 4 as a vibration damping member for the air pump. The specific structure of the connecting portion 51 can be the same as or similar to that of the aforementioned vibration damping member 4. That is, the connecting portion 51 may include a vibration damping bottom wall 41 that abuts against the bottom wall of the air pump 1. However, the connecting portion 51 may not have a downwardly protruding vibration damping seat 411 provided on the vibration damping bottom wall 41. The vibration damping bottom wall 41 may be spaced apart from the mounting box 3 by a certain space.

[0152] The connecting part 51 may include vibration-damping sidewalls 42 that abut against the front, rear, left, and right sidewalls of the vacuum pump 1. The vibration-damping sidewalls 42 may be spaced apart from the wall of the mounting box 3. The vibration-damping sidewalls 42 may include vibration-damping limiting ribs 421 protruding into the wall of the mounting box 3. The vibration-damping sidewalls 42 may also be without vibration-damping limiting ribs 421.

[0153] The connecting part 51 may include a vibration-damping upper wall 43. The vibration-damping upper wall 43 may abut against a portion of the top wall of the air pump 1. The vibration-damping upper wall 43 may undergo elastic deformation to temporarily enlarge the receiving opening 54 during the installation of the air pump 1, so that the air pump 1 can be easily inserted into the receiving space 53 of the connecting part 51.

[0154] The flexible arm 52 and the connecting part 51 work together to suspend the air pump 1 within the mounting box 3, ensuring that the air pump 1 remains stably suspended under multi-directional vibration and impact conditions. The flexible arm 52 and the connecting part 51 are integrally molded from elastic material, simplifying processing and facilitating fixing, thereby improving installation efficiency and reducing costs. Both the flexible arm 52 and the connecting part 51 can absorb vibration energy, improving the operational stability of the air pump 1, enhancing vibration damping, and simplifying the installation and maintenance process.

[0155] In one embodiment of this application, the elastic material can be rubber. In other embodiments, other materials, such as silicone, can also be used as the elastic material. The damping element 4 or the suspension element 5 can both be integrally molded from the elastic material.

[0156] Referring to Figures 15 to 17, in one embodiment of this application, the outer diameter of the elastic limiting protrusion 523 gradually decreases along the direction near the end of the free end 524 of the elastic arm 52. The elastic limiting protrusion 523 may be tapered. This design facilitates the installation of the elastic limiting protrusion 523.

[0157] Referring to Figures 1, 10, and 19, in one embodiment of this application, the vacuum pump assembly 100 may include a vacuum pump module. The vacuum pump module is disposed within the mounting box 3. The vacuum pump assembly 100 also includes a counterweight 10 disposed within the mounting box 3. The counterweight 10 is positioned between the wall of the mounting box 3 and the vacuum pump module, abutting against both the wall of the mounting box 3 and the vacuum pump module.

[0158] The counterweight 10 effectively absorbs and reduces the vibration generated by the air pump module during operation through its own weight and cushioning effect. The presence of the counterweight 10 helps to disperse the vibration force generated by the air pump module, thereby preventing the vibration from being directly transmitted 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.

[0159] The counterweight 10 abuts against the wall of the mounting box 3 and the air pump module, simplifying the installation and fixing process. The counterweight 10 also acts as an intermediate buffer layer, functioning as a vibration damper in vibrating environments, effectively reducing the impact of the air pump module's vibration on the mounting box 3. The presence of the counterweight 10 also effectively prevents excessive displacement or shaking of the air pump module.

[0160] Referring to Figures 1, 10, and 19, in one embodiment of this application, the air pump module includes a vibration damper 4 and an air pump 1. The vibration damper 4 has a cavity 40 formed inside, and the air pump 1 is at least partially placed within the cavity 40. The vibration damper 4 is integrally formed from a vibration damping material. A counterweight 10 is disposed between the wall of the mounting box 3 and the vibration damper 4. The counterweight 10 abuts against the vibration damper 4. In other embodiments of this application, the air pump module may also include only the air pump 1, and may include the air pump 1 and other components, such as a suspension member 5.

[0161] The counterweight 10 abuts against the vibration damper 4, and this combined design further enhances the vibration damping effect of the air pump 1. The vibration damper 4 is integrally molded from vibration damping material, which can effectively absorb the vibration generated by the air pump 1 during operation. As an intermediate buffer layer between the vibration damper 4 and the wall of the mounting box 3, the counterweight 10 also helps to reduce the vibration and noise of the air pump 1 during operation. The counterweight 10 is located between the wall of the mounting box 3 and the vibration damper 4, and it 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.

[0162] Referring to Figures 1, 9, 10, 12, and 13, in one embodiment of this application, the vibration damping member 4 may be as described above. The vibration damping member 4 may include vibration damping sidewalls 42 that abut against the front, rear, left, and right sidewalls of the air pump 1. The vibration damping sidewalls 42 are spaced apart from the sidewalls of the mounting box 3. The vibration damping sidewalls 42 may be provided with vibration damping limiting ribs 421 protruding towards the wall of the mounting box 3. The vibration damping limiting ribs 421 may abut against the counterweight 10. The vibration damping member 4 may include a vibration damping bottom wall 41 and a vibration damping top wall. In other embodiments, the counterweight 10 may also be disposed between the top wall of the mounting box 3 and the vibration damping top wall, or between the bottom wall of the mounting box 3 and the vibration damping bottom wall 41. By placing the counterweight 10 between the mounting box 3 and the side wall of the vibration damper 4, and making the vibration damping limiting rib 421 abut against the counterweight 10, the vibration damping and noise reduction effect can be improved, the counterweight 10 can be prevented from directly contacting the wall of the vibration damper 4, and the wear of the vibration damper 4 can be reduced.

[0163] Referring to Figures 14 and 19, in one embodiment of this application, a fixing rib 34 is provided on the inner wall of the mounting 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 mounting box 3. The connecting plate 342 connects the inner wall of the mounting 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 mounting 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 abut against the counterweight 10.

[0164] The first fixing rib 343 and the second fixing rib 344, through the insertion space 345 formed by the limiting plate 341 and the connecting plate 342, can securely fix the counterweight 10 in the mounting box 3. After the counterweight 10 is inserted into the insertion space 345, it abuts against the limiting plates 341 of the two fixing ribs 34, preventing the counterweight 10 from shifting or shaking during operation. This ensures that the counterweight 10 is always in the correct working position, improving 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 limiting plate 341, without the need for additional fasteners or complex installation operations. This design not only simplifies the installation process but also reduces the risk of errors during installation, improving installation efficiency. At the same time, when maintaining or replacing the counterweight 10, it can be simply removed from the insertion space 345, making the operation more convenient.

[0165] Referring to Figures 1 and 19, in one embodiment of this application, the counterweight 10 is disposed on the left and / or right and / or front and / or rear side of the air pump module. The bottom wall of the counterweight 10 abuts against the bottom wall of the mounting box 3. The contact between the bottom wall of the counterweight 10 and the bottom wall of the mounting box 3 provides solid support for the counterweight 10 and enhances the stability of the counterweight 10. The counterweight 10 can be installed on the left, right, front, or rear side of the equipment as needed, flexibly adapting to different design and spatial layout requirements.

[0166] Referring to Figures 1 and 19, in one embodiment of this application, the counterweight 10 includes a first counterweight 104 and a second counterweight 105. The first counterweight 104 and the second counterweight 105 are disposed opposite to each other on the left and right sides or the front and rear sides of the air pump module.

[0167] By placing the first counterweight 104 and the second counterweight 105 on the left and right sides or the front and rear sides of the air pump module respectively, the center of gravity of the mounting box 3 is evenly distributed. This symmetrical design ensures that the vibration generated by the air pump assembly 100 during operation can be better absorbed and dispersed, and will not sway or tilt due to the shift of the center of gravity, thus improving the overall stability.

[0168] In one embodiment of this application, the counterweight 10 is made of stainless steel. By using stainless steel as the material for the counterweight 10, the equipment not only achieves higher corrosion resistance, impact resistance, and vibration damping, but also improves its service life and operational stability. In other embodiments of this application, the counterweight 10 may also be made of other materials, such as copper.

[0169] Referring to Figures 1 and 19, in one embodiment of this application, the counterweight 10 is in the shape of a rectangular block. The rectangular block counterweight 10 has a simple and stable shape, allowing it to form a large contact area with the inner wall or bottom wall of the mounting box 3, providing stable support. The rectangular block counterweight 10 structure also has the advantage of being easy to manufacture and process, reducing production costs.

[0170] Referring to Figures 1 and 19, in one embodiment of this application, the first counterweight 104 and the second counterweight 105 have the same shape and weight. The weight of both the first counterweight 104 and the second counterweight 105 is greater than or equal to 100g. Preferably, the weight of both the first counterweight 104 and the second counterweight 105 is 100g.

[0171] Referring to Figures 1, 9, and 10, in one embodiment of this application, at least a portion of the top of the vacuum pump 1 is positioned outside the vibration damper 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 damper 4. The foam 101 is a material with high elasticity and flexibility, capable of effectively absorbing vibration and impact. Covering the peripheral wall of the top of the vacuum pump 1 with foam 101 can further buffer the vibration generated by the operation of the vacuum pump assembly 100, reducing the transmission of vibration energy. The foam 101 also reduces friction and wear between the vacuum pump 1 and other components, extending the service life of the vacuum pump 1.

[0172] Referring to Figures 1, 9, and 10, in one embodiment of this application, the cover 32 is provided with a downwardly protruding limiting rib 35, which abuts against the peripheral surface of the foam 101. By providing a downwardly protruding limiting rib 35 on the cover 32 and having it abut against the peripheral surface of the foam 101, not only is wear and displacement of the foam 101 prevented, but the fixation and vibration damping effect of the foam 101 are also effectively improved.

[0173] Referring to Figures 1, 2, and 20, in one embodiment of this application, the air pump assembly 100 includes an air pump module and a noise reduction and vibration damping assembly 6 disposed outside the air pump module. The noise reduction and vibration damping assembly 6 includes a metal plate 61 and a vibration damping layer 62. The vibration damping layer 62 covers at least one side of the metal plate 61.

[0174] Because of the high density of metal materials, sound waves have difficulty penetrating them. Therefore, the metal plate 61 has a noise shielding effect, while the vibration damping layer 62 absorbs high-frequency noise, and the metal plate 61 reflects low-frequency noise, thus forming a dual noise suppression mechanism and further enhancing the noise reduction effect. The metal plate 61 increases the overall weight of the air pump assembly 100, reducing its vibration. The presence of the vibration damping layer 62 can also effectively absorb the vibration generated during the operation of the air pump assembly 100, reducing the transmission of vibration to the outside, thus further enhancing the vibration damping effect. The combination of the metal plate 61 and the vibration damping layer 62 gives the vibration damping and noise reduction assembly a certain degree of flexibility while also possessing a certain degree of rigidity, enabling it to better resist vibration and impact, and also providing a certain degree of support for the air pump module.

[0175] The noise reduction and vibration damping component 6 simplifies the equipment installation process 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 onto the outside of the air pump module in one go, 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, improving efficiency.

[0176] The air pump module here may differ from the air pump module described above. The air pump module can refer to a component module including the air pump 1 and other components, or it can refer only to the air pump 1. That is, the noise reduction and vibration damping component 6 can be directly arranged on the outside of the air pump 1 to reduce vibration and noise, or it can be arranged outside the air pump module composed of the air pump 1 and other structures to reduce vibration and noise in the air pump module. For example, the air pump module may include the air pump 1 and the vibration damping component 4, and the noise reduction and vibration damping component 6 can be arranged outside the vibration damping component 4.

[0177] Referring to Figures 1, 2, and 20, in one embodiment of this application, the air pump module may include a mounting box 3 and an air pump 1 disposed within the mounting box 3. A noise reduction and vibration damping component 6 is disposed outside the mounting box 3. A metal plate 61 is spaced apart from the wall of the mounting box 3. A vibration damping layer 62 at least covers the side of the metal plate 61 facing the wall of the mounting box 3. The vibration damping layer 62 is in contact with the wall of the mounting box 3. The mounting box 3 may be as described above.

[0178] The vibration damping layer 62 is in direct contact with the wall of the mounting box 3, effectively absorbing the vibrations generated during the operation of the air pump 1 and preventing these vibrational energies from being transmitted to the outside of the mounting box 3. The vibration damping layer 62 acts as a buffer, reducing the impact of vibrations on the mounting box 3 through its elastic properties, and avoiding direct friction and wear on the mounting box 3. In addition to its vibration damping and noise reduction effects, the metal plate 61 provides an additional physical barrier to prevent the mounting box 3 from being subjected to external impacts or physical damage, thereby improving the overall vibration damping, noise reduction, impact resistance, and durability of the air pump assembly 100.

[0179] In other embodiments of this application, the metal plate 61 may also directly abut against the wall of the mounting box 3, and the vibration damping layer 62 may cover the side of the metal plate 61 that is away from the wall of the mounting box 3.

[0180] Referring to FIG20, in one embodiment of this application, the vibration damping layer 62 includes 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 mounting box 3. The second vibration damping layer 622 covers the side of the metal plate 61 away from the wall of the mounting box 3.

[0181] By covering the metal plate 61 with a first damping layer 621 on the side facing the wall of the mounting box 3, and covering the metal plate 61 with a second damping layer 622 on the side facing away from the wall of the mounting box 3, this design achieves multiple vibration reduction and noise reduction effects. The synergistic effect of the two damping layers 62 and the metal plate 61 significantly reduces the vibration transmission and noise propagation of the air pump 1, and also improves the shock resistance and operational stability of the air pump assembly 100.

[0182] The first damping layer 621 contacts the wall of the mounting box 3, reducing wear on the wall. The second damping layer 622 is disposed on the outside of the metal plate 61, reducing wear on the metal plate 61 and mitigating the impact of the external environment. This effectively reduces the accumulation of mechanical stress, minimizes damage caused by vibration or impact, and extends the service life of the air pump assembly 100. The damping layer 62 directly covers both sides of the metal plate 61, simplifying the installation process, avoiding errors during installation, and ensuring the long-term stability of the equipment.

[0183] Referring to FIG20, in one embodiment of this application, both the first damping layer 621 and the second damping layer 622 extend outward from the metal plate 61. The portions of the first damping layer 621 and the second damping layer 622 located on the outside of the metal plate 61 are connected to each other to enclose the metal plate 61 within the damping layer 62.

[0184] 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 fully enclosed structure not only achieves stable fixation of the metal plate 61, but also effectively prevents wear and external contact of the metal plate 61, enhances the durability and safety of the air pump assembly 100, prevents dust, moisture or chemicals in the external environment from directly contacting the metal plate 61, avoids oxidation or corrosion of the metal plate 61, and reduces the risk of electric shock, other structural damage or worker injury caused by external exposure of the metal plate 61.

[0185] In other embodiments of this application, the damping layer 62 may also extend flush with the edge of the metal plate 61, with the edge sidewalls of the metal plate 61 exposed. The edge of the damping layer 62 may also be inside the edge of the metal plate 61.

[0186] Referring to Figure 20, in one embodiment of this application, the thickness of the metal plate 61 is greater than or equal to 4 mm. The thickness of both the first damping layer 621 and the second damping layer 622 is 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 during the operation of the vacuum pump 1. The thickness of both the first damping layer 621 and the second damping layer 622 is greater than twice the thickness of the metal plate 61. The thicker damping layer 62 can effectively absorb noise and vibration energy, while further blocking the noise and vibration reflected by the metal plate 61, achieving better noise reduction and vibration damping effects. By using a thicker metal plate 61 and damping layer 62, better buffering and protection can be provided to prevent the vacuum pump assembly 100 from being damaged by external impacts or vibrations.

[0187] Referring to Figure 20, in one embodiment of this application, the vibration damping layer 62 is bonded to the wall of the mounting box 3 and to the metal plate 61. The portions of the first vibration damping layer 621 and the second vibration damping layer 622 located on the outer side of the metal plate 61 are bonded to each other. By bonding the vibration damping layer 62 to the wall of the mounting box 3 and the metal plate 61, a firm connection between the vibration damping layer 62 and each component is ensured, preventing the noise reduction and vibration damping assembly 6 from shifting or loosening due to vibration or impact. This ensures that the noise reduction and vibration damping assembly 6 always functions as vibration damping and noise reduction in its designed position, ensuring that the noise reduction and vibration damping assembly 6 maintains its positional stability during long-term use and improving the overall structural stability of the equipment. Using adhesive bonding to firmly connect the vibration damping layer 62, the metal plate 61, and the wall of the mounting box 3 simplifies the structural design of the equipment, eliminates the need for additional fasteners or complex mechanical connections, reduces assembly steps, and improves the ease and efficiency of installation.

[0188] Referring to Figure 20, in one embodiment of this 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 is interference-fitted with the wall of the mounting box 3. The interference fit between the vibration damping layer 62 and the wall of the mounting box 3 is not less than 3mm. IXPE foam 101 has excellent vibration damping performance, and its flexible structure can absorb and buffer the vibration and impact generated by the air pump assembly 100 during operation. Through the interference fit with the wall of the mounting box 3, the vibration damping layer 62 can maintain continuous close contact, further enhancing the absorption effect of the vibration damping layer 62 on vibration energy and effectively reducing the transmission of vibration to the outside. Stainless steel plate, as a sturdy and durable material, has excellent corrosion resistance, high temperature resistance, and oxidation resistance, and also has good mechanical strength. IXPE foam 101 also has very high durability, with good anti-aging, moisture resistance, and chemical corrosion resistance, which can effectively ensure that the equipment can still operate stably in humid, dusty, or chemically exposed environments.

[0189] Referring to Figures 1 and 20, in one embodiment of this 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 mounting box 3, and the damping layer 62 of the upper noise reduction and vibration damping assembly 63 is in contact with the upper wall of the mounting box 3. The noise reduction and vibration damping assembly 6 also includes a lower noise reduction and vibration damping assembly 64. The metal plate 61 of the lower noise reduction and vibration damping assembly 64 is spaced apart from the bottom wall of the mounting box 3, and the damping layer 62 of the lower noise reduction and vibration damping assembly 64 is in contact with the bottom wall of the mounting box 3. Finally, 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 mounting box 3, and the damping layer 62 of the front noise reduction and vibration damping assembly is in contact with the front wall of the mounting box 3.

[0190] 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 mounting box 3, and the damping layer 62 of the rear noise reduction and vibration damping assembly is in contact with the rear wall of the mounting box 3. The noise reduction and vibration damping assembly 6 also 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 mounting box 3, and the damping layer 62 of the left noise reduction and vibration damping assembly 65 is in contact with the left wall of the mounting box 3. Finally, 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 mounting box 3, and the damping layer 62 of the right noise reduction and vibration damping assembly 66 is in contact with the right wall of the mounting box 3.

[0191] By placing noise reduction and vibration damping components 6 in six directions (up, down, front, back, left, and right) of the mounting box 3, all-round vibration damping protection and sound insulation effects are achieved. The metal plates 61 in each direction are spaced apart from the walls of the mounting box 3, and contact the walls of the mounting box 3 through the vibration damping layer 62, ensuring the vibration damping performance, impact resistance, and durability of the noise reduction and vibration damping components 6. This design significantly reduces mechanical wear on the mounting box 3, extends the service life of the air pump assembly 100, and improves the protective performance of the air pump assembly 100 in complex environments.

[0192] Referring to Figures 4, 20, and 21, in one embodiment of this application, the storage compartment 1002 includes a refrigerator compartment 1004. An air pump assembly 100 is disposed within the refrigerator compartment 1004. By placing the air pump assembly 100 within the refrigerator compartment 1004, the inner liner, insulation layer, and door 1003 of the refrigerator compartment 1004 can effectively isolate the noise and vibration of the air pump assembly 100 from being transmitted outwards, thus avoiding disruption to the user's life and improving the user experience.

[0193] The target air extraction space of the air pump assembly 100 can be the refrigerator compartment 1004 or a local space within the refrigerator compartment 1004. Setting the air pump assembly 100 within the refrigerator compartment 1004, and with the target air extraction space also within the refrigerator compartment 1004, facilitates the connection between the air pump assembly 100 and the target air extraction space, simplifying the connection path.

[0194] Referring to Figures 4, 20, and 21, in one embodiment of this application, the refrigeration device 1000 includes a cylindrical body 1005 disposed within a refrigerator compartment 1004. The cylindrical body 1005 has an open front end forming a front opening. The refrigeration device 1000 includes a pull-out drawer 1006 disposed within the cylindrical body 1005. A vacuum pump assembly 100 is disposed between the rear wall of the cylindrical body 1005 and the rear wall of the refrigerator compartment 1004. A metal plate 61 is spaced apart from the wall of the cylindrical body 1005 or the wall of the refrigerator compartment 1004. A vibration damping layer 62 is in contact with the wall of the cylindrical body 1005 or the wall of the refrigerator compartment 1004.

[0195] The walls of the cylinder 1005 and the refrigerator compartment 1004 enclose the installation space for the air pump assembly 100. The vibration damping layer 62 can be bonded to either the wall of the cylinder 1005 or the wall of the refrigerator compartment 1004. A first vibration damping layer 621 is located between the metal plate 61 and the wall of the mounting box 3, and a second vibration damping layer 622 is located between the metal plate 61 and the wall of the cylinder 1005 or the wall of the refrigerator compartment 1004. The internal space of the cylinder 1005 serves as the target air extraction space for the air pump assembly 100. By bonding the vibration damping layer 62 to the wall of the cylinder 1005 or the wall of the refrigerator compartment 1004, the installation process is simplified, and a stable connection between the noise reduction and vibration damping assembly 6 and the walls of the cylinder 1005 and the refrigerator compartment 1004 is ensured without the need for additional fixing devices. This reduces complex assembly steps while ensuring the robustness of the equipment installation and the vibration damping effect.

[0196] The vibration damping layer 62 is disposed between the metal plate 61 and the wall of the cylinder 1005 or the wall of the refrigerator compartment 1004. It can effectively absorb and buffer the vibration generated during the operation of the air pump assembly 100, prevent the vibration from being transmitted to the walls of the cylinder 1005 and the refrigerator compartment 1004, and prevent mechanical friction or collision between the air pump assembly 100 and other parts of the cylinder 1005 or the refrigerator compartment 1004. This reduces the impact of vibration on the refrigeration equipment 1000 and the internal environment of the refrigerator compartment 1004, reduces noise interference from the equipment, and improves the user experience.

[0197] The air pump assembly 100 is arranged between the rear wall of the cylinder 1005 and the rear wall of the refrigerator compartment 1004. Through optimized space design, it effectively utilizes the unused space in the refrigerator compartment 1004. It not only does not occupy the effective storage space of the refrigerator compartment 1004, but also hides the mechanical parts of the equipment, improving the overall structural compactness of the space. Moreover, the air pump assembly 100 is located on the rear side of the refrigerator compartment 1004, far from the refrigerator door, which extends the propagation path of noise and vibration and reduces outward noise interference.

[0198] The first column 243 and the inner space of the cylinder 1005 can be equipped with connecting pipes, and oxygen-permeable membranes can be installed inside the connecting pipes. This allows the vacuum pump 1 to extract oxygen from the cylinder 1005, creating a low-oxygen environment inside the cylinder 1005 to extend the storage time of the food inside. The oxygen-permeable membrane is a special membrane material that allows oxygen to pass through while restricting the passage of other gases. The oxygen-permeable membrane can selectively control the inflow or outflow of oxygen, helping to maintain the oxygen concentration inside the cylinder 1005 within a predetermined range. By extracting oxygen from the inside of the cylinder 1005 using the vacuum pump 1 to create a low-oxygen environment, the shelf life of fruits, vegetables, meats, and other foods can be significantly extended, and oxidation reactions and microbial growth can be slowed down.

[0199] In summary, the air pump assembly 100, the manufacturing method of the air pump assembly 100, and the refrigeration equipment 1000 of this application can solve the problem that the existing air pump 1 generates vibration and noise during operation, affecting the user experience. By adopting the technical solution of this application, the vibration and noise of the air pump assembly 100 can be reduced, thereby improving the user experience.

[0200] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0201] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this patent, and are not intended to limit the scope of protection of this patent. All equivalent implementation methods or modifications that do not depart from the spirit of the technology of this patent should be included within the scope of protection of this patent.

Claims

1. An air pump assembly, characterized in that, The device includes a vacuum pump and a silencer. The vacuum pump includes a pump inlet and a pump outlet. The silencer has a silencing cavity inside and is provided with a silencing inlet that communicates with the silencing cavity. The silencer is also provided with a pump inlet channel, which includes a first channel end and a second channel end. The first channel end is used to communicate with the target vacuum space of the vacuum pump, and the second channel end is connected to the pump inlet. The pump outlet is connected to the silencing inlet.

2. The air pump assembly as described in claim 1, characterized in that, The muffler includes a housing, which includes a main body. Inside the main body, the muffler cavity, the main body of the pump inlet channel, and a partition wall are formed. The partition wall is spaced between the muffler cavity and the main body of the pump inlet channel. The main body extends through the main body. The outer wall of the main body extends outward from one end of the main body to form a first column, and the outer wall of the main body extends outward from the other end of the main body to form a second column. Inside the first column, a first channel end communicating with the main body is formed, and inside the second column, a second channel end communicating with the main body is formed.

3. The air pump assembly as described in claim 2, characterized in that, The pump outlet and the silencer inlet are spaced apart and opposite to each other, the pump inlet and the second channel end are spaced apart and opposite to each other, the vacuum pump assembly includes an outlet connecting pipe connecting the pump outlet and the silencer inlet, the outlet connecting pipe is an elastic pipe, and the vacuum pump assembly includes an inlet connecting pipe connecting the pump inlet and the second channel end, the inlet connecting pipe is an elastic pipe.

4. The air pump assembly as described in claim 3, characterized in that, The shell body includes a first wall near the air pump, the air pump includes a second wall spaced apart from the first wall, the second column and the silencer air inlet are both disposed on the first wall, and the pump air inlet and the pump air outlet are both disposed on the second wall.

5. The air pump assembly as described in claim 4, characterized in that, The air pump assembly includes a mounting box, which includes a box body with an open opening at the top. The mounting box includes a cover for opening and closing the open opening. The air pump and the silencer are both disposed inside the box body. The silencer is located above the air pump, and the bottom wall of the silencer is the first wall. An elastic gasket is disposed between the top wall of the silencer and the cover.

6. The air pump assembly as described in claim 5, characterized in that, The silencing exhaust section includes a metal pipe with an inner diameter of less than 0.7 mm. One end of the metal pipe is inserted into the mounting through hole formed by the mounting box, and the gas in the silencing cavity is discharged to the outside of the mounting box through the metal pipe.

7. The air pump assembly as described in claim 6, characterized in that, The muffler is provided with a muffler exhaust section communicating with the muffler cavity. The muffler exhaust section is used to discharge the gas that enters the muffler cavity from the muffler inlet section. The muffler exhaust section includes a metal pipe. The muffler inlet section includes a muffler inlet located in the muffler cavity. The metal pipe includes a muffler exhaust port located in the muffler cavity. The orientation of the muffler inlet is perpendicular to the orientation of the muffler exhaust port. The height of both the muffler inlet and the muffler exhaust port is higher than the bottom surface of the muffler cavity.

8. The air pump assembly as claimed in claim 7, characterized in that, The first column is disposed on the top wall of the shell body, the silencing and exhaust part is disposed on the side wall of the shell body, the side wall of the box cover is formed with a mounting through hole that mates with the metal tube, the metal tube is inserted into the mounting through hole, the box cover is formed with a mounting elongated hole that mates with the first column, the first column extends out of the mounting box through the mounting elongated hole, the length direction of the mounting elongated hole is consistent with the extension direction of the metal tube, and the diameter of the mounting elongated hole near the metal tube is smaller than the diameter of the mounting elongated hole away from the metal tube.

9. The air pump assembly as claimed in claim 8, characterized in that, The air pump assembly includes a sleeve located outside the silencer and fitted over the metal tube, with at least a portion of the sleeve placed within the mounting through hole.

10. A refrigeration device, comprising a housing, a storage compartment formed within the housing, and a door for opening and closing the storage compartment, characterized in that, The refrigeration equipment further includes a vacuum pump assembly as described in any one of claims 1-9, the storage compartment including a cold storage compartment, and the vacuum pump assembly disposed in the cold storage compartment.

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