Sucker pump assembly and refrigeration equipment with same

Abstract

The utility model provides a sucking pump assembly and refrigeration equipment with the sucking pump assembly. The air extracting pump assembly comprises a mounting box and an air extracting pump arranged in the mounting box, the air extracting pump assembly comprises a suspension part, the suspension part comprises a connecting part arranged in the mounting box and an elastic arm connected with the connecting part, the elastic arm is integrally formed by an elastic material, the air extracting pump is connected with the connecting part, and the air extracting pump is arranged in the mounting box. The elastic arm is connected to the wall of the mounting box, and the hanging piece enables the air extracting pump to be hung in the mounting box through the connecting part and the elastic arm. By means of the arrangement, vibration and noise of the air extracting pump can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of home appliance especially, it relates to a kind of air suction pump assembly and the refrigeration equipment with it. BACKGROUND

[0002] Refrigeration equipment such as refrigerator, it is the equipment for storing food material in contemporary family. The existing refrigeration equipment generally prolongs the shelf life of food material by providing low-temperature environment. However, in the storage process of fresh products such as fruits and vegetables, the gas environment in the storage chamber is also important for delaying the aging of food material and reducing the spoilage rate. For example, low-vacuum environment can reduce air flow and reduce the spread of odor and bacteria between different food materials, which can effectively prevent cross-contamination between food materials. For example, fruits and vegetables can effectively reduce respiration in low-oxygen environment, thereby prolonging freshness. In order to adjust the gas environment in the storage chamber, generally, an air suction pump is needed to extract the gas in the storage chamber. However, the existing design has the following defects: the air suction pump generates vibration and noise during operation, affecting the user experience. SUMMARY

[0003] The utility model aims at providing a kind of air suction pump assembly and the refrigeration equipment with it, the connecting portion and elastic arm of suspension piece make the air suction pump suspend in the installation box, can realize the vibration and noise of air suction pump reduction.

[0004] To achieve the above object, the present application provides an air suction pump assembly, comprising an installation box and an air suction pump arranged in the installation box, the air suction pump assembly comprises a suspension piece, the suspension piece comprises a connecting portion arranged in the installation box and an elastic arm connected with the connecting portion, the elastic arm is integrally formed by elastic material, the air suction pump is connected with the connecting portion, the elastic arm is connected to the installation box wall, and the suspension piece suspends the air suction pump in the installation box through the connecting portion and the elastic arm.

[0005] As one of the embodiments of the present application, a receiving space is formed in the connecting portion, a receiving opening is formed at the upper end of the connecting portion, and at least the lower part of the air suction pump is placed in the receiving space through the receiving opening.

[0006] As one of the embodiments of the present application, the free end of the elastic arm is provided with an elastic limiting protrusion, the installation box wall is formed with a fixing hole, the outer diameter of the elastic limiting protrusion is greater than the hole diameter of the fixing hole at least in part, and the elastic limiting protrusion passes through the fixing hole from the inside of the installation box and abuts against the outside of the installation box wall by elastic deformation.

[0007] As one of the embodiments of the present application, the elastic arm includes a free end away from the connecting part side, the elastic arm includes an upper elastic arm and a lower elastic arm, the free end of the upper elastic arm is connected to the mounting box wall above the connecting part to provide upward tension to the connecting part, and the free end of the lower elastic arm is connected to the mounting box wall below the connecting part to provide downward tension to the connecting part.

[0008] As one of the embodiments of the present application, the upper elastic arm includes a first elastic arm, a second elastic arm, a third elastic arm and a fourth elastic arm which are spaced apart along the circumference of the connecting part.

[0009] As one of the embodiments of the present application, the first elastic arm is located at the front side of the connecting part and connected to the upper middle part of the front wall of the connecting part, the second elastic arm is located at the rear side of the connecting part and connected to the upper middle part of the rear wall of the connecting part, the third elastic arm is located at the left side of the connecting part and connected to the upper middle part of the left wall of the connecting part, the fourth elastic arm is located at the right side of the connecting part and connected to the upper middle part of the right wall of the connecting part, and the lower elastic arm is located below the connecting part and connected to the middle part of the bottom wall of the connecting part.

[0010] As one of the embodiments of the present application, the mounting box includes a shell main body, the shell main body has an open opening at the upper end, the mounting box includes a box cover for opening and closing the open opening, the air suction pump and the connecting part are arranged in the shell main body, the free end of the upper elastic arm is connected to the box cover, and the free end of the lower elastic arm is connected to the bottom wall of the shell main body.

[0011] As one of the embodiments of the present application, the connecting part and the elastic arm are integrally formed by an elastic material, and the elastic material is rubber.

[0012] As one of the embodiments of the present application, the elastic limiting protrusion gradually decreases in the outer diameter in the direction close to the free end of the elastic arm.

[0013] To achieve the above-mentioned purpose, the present application provides a refrigeration equipment, which comprises a box body, a storage room formed in the box body, and a door body for opening and closing the storage room, and further comprises the air suction pump assembly according to any one of the above-mentioned embodiments, the storage room comprises a refrigeration room, and the air suction pump assembly is arranged in the refrigeration room.

[0014] Compared with the prior art, the connecting part and the elastic arm of the suspension part are used to suspend the air suction pump in the mounting box, and the beneficial effects are that the vibration and noise of the air suction pump can be reduced. BRIEF DESCRIPTION OF DRAWINGS

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

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

[0017] Figure 2 is Figure 1 an assembly view of the air pump assembly;

[0018] Figure 3 is Figure 1 a structural view of the air pump in the embodiment;

[0019] Figure 4 is a structural view of the refrigeration device of an embodiment of the present application;

[0020] Figure 5 is Figure 1 a structural view of the muffler in the embodiment;

[0021] Figure 6 is Figure 5 a structural view of the shell body in the embodiment;

[0022] Figure 7 is Figure 5 a longitudinal sectional view of the muffler shown;

[0023] Figure 8 is Figure 5 a transverse sectional view of the muffler shown;

[0024] Figure 9 is Figure 1 an assembly view of the air pump, the damping member, the muffler and related components in the embodiment;

[0025] Figure 10 is Figure 1 an assembly view of the box body, the air pump and related components in the embodiment;

[0026] Figure 11 is Figure 1 an assembly view of the air pump, the muffler and related components in the embodiment;

[0027] Figure 12 is Figure 1 a structural view of the damping member in the embodiment;

[0028] Figure 13 is Figure 12 a structural view of the damping member in the embodiment;

[0029] Figure 14 is Figure 1 a structural view of the box body in the embodiment;

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

[0031] Figure 16 is Figure 15 is assembled with Figure 1 is a schematic diagram of the assembly of the suspension piece and the air pump;

[0032] Figure 17 is Figure 15 is assembled with Figure 1 is a schematic diagram of the assembly of the suspension piece and the mounting box;

[0033] Figure 18 is Figure 17 is a structural schematic diagram of a box cover according to an embodiment of the present application;

[0034] Figure 19 is Figure 1 is a schematic diagram of the assembly of the box body, the air pump, the counterweight piece and related components;

[0035] Figure 20 is a schematic diagram of the assembly of the noise reduction and vibration reduction assembly and the mounting box; Figure 2

[0036] Figure 21 is Figure 20 is a schematic diagram of the assembly of the noise reduction and vibration reduction assembly and the refrigeration chamber. Figure 4

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

[0038] The patent will be described in detail below in combination with the specific embodiments shown in the drawings. However, these embodiments do not limit the patent, and the changes made by those of ordinary skill in the art in structure, method, or function based on these embodiments are all included in the protection scope of the patent.

[0039] Refer toFigures 1 to 3 The present application provides a gas extraction pump assembly 100. In an embodiment of the present application, the gas extraction pump assembly 100 can comprise a gas extraction pump 1. The gas extraction pump 1 can also be referred to as a vacuum pump. The gas extraction pump 1 can be used to remove gas or air from a relatively closed space, which can be referred to as a target gas extraction space of the gas extraction pump 1. The gas extraction pump 1 can reduce the air pressure of the target gas extraction space by removing air in the target gas extraction space, so as to generate a vacuum environment lower than the atmospheric pressure, such as a low vacuum environment. The gas extraction pump 1 can also reduce the oxygen content in the target gas extraction space by removing gas such as oxygen in the target gas extraction space, so as to create a low-oxygen environment.

[0040] The gas extraction pump 1 comprises a pump air inlet 11. The pump air inlet 11 can be connected to the target gas extraction space. The gas extraction pump 1 sucks in gas from the target gas extraction space through the pump air inlet 11.

[0041] The gas extraction pump 1 can comprise a pump air outlet 12. The gas sucked in by the gas extraction pump 1 from the target gas extraction space can be discharged from the pump air outlet 12 to the outside of the gas extraction pump 1. The pump air outlet 12 can be connected to other structures so that the discharged gas enters the inside of the other structures, or the pump air outlet 12 can be in communication with the external environment so that the gas is directly discharged into the atmosphere.

[0042] The gas extraction pump 1 can further comprise a driving system. The driving system can be an electric motor or a pneumatic system. The driving system is used to drive the operation of the gas extraction pump 1, drive the mechanical part of the pump to operate through a transmission mechanism, and promote the movement of the components in the pump cavity of the gas extraction pump 1, so as to complete the process of sucking in and discharging gas.

[0043] Referring to Figure 4 The present application provides a refrigeration device 1000. The refrigeration device 1000 can comprise a cabinet 1001, a storage chamber 1002 formed in the cabinet 1001, and a door body 1003 for opening and closing the storage chamber 1002. The refrigeration device 1000 can further comprise the gas extraction pump assembly 100 of the present application. The target gas extraction space of the gas extraction pump assembly 100 can be the storage chamber 1002, or a space arranged inside the cabinet 1001, the door body 1003, or the storage chamber 1002. Through the gas extraction pump assembly 100, a special gas environment such as a low-oxygen or vacuum environment can be formed inside the refrigeration device 1000, so as to improve the functionality of the refrigeration device 1000 and provide a better storage environment for the stored articles in the refrigeration device 1000. The refrigeration device 1000 of the present application can be a refrigerator, a freezer, a commercial display cabinet, or the like.

[0044] Referring to Figure 4In an embodiment of the present application, the air extraction pump assembly 100 can be arranged in the storage chamber 1002. Arranging the air extraction pump assembly 100 in the storage chamber 1002, the cabinet 1001 and the door 1003 can seal the storage chamber 1002, thereby reducing the propagation of the noise of the air extraction pump assembly 100 and improving the user experience.

[0045] With reference to Figure 1 and Figure 5 In an embodiment of the present application, the air extraction pump assembly 100 can include a muffler 2. The muffler 2 can be used to reduce the noise generated when the air extraction pump 1 discharges the gas. The muffler 2 can include a shell 20. The shell 20 can be made of durable materials such as metal or plastic, and the shell 20 can wrap and protect the internal structure while providing a relatively closed environment to reduce the leakage of noise.

[0046] With reference to Figure 1 , Figures 5 to 8 The muffler 2 can include a muffling cavity 21. The muffling cavity 21 can be formed inside the muffler 2, i.e. inside the shell 20. The muffler 2 can include a muffling air inlet 22. The shell 20 can be provided with the muffling air inlet 22 communicating with the muffling cavity 21. The pump air outlet 12 can be connected with the muffling air inlet 22. The muffling air inlet 22 is used to make the gas discharged by the pump air outlet 12 enter the muffling cavity 21. The muffling cavity 21 can be designed in an expanding manner relative to the muffling air inlet 22, so that the gas entering the muffling cavity 21 from the muffling air inlet can suddenly slow down, the sound waves can be reflected, and the energy of the sound waves can be attenuated, thereby reducing the noise.

[0047] With reference to Figure 1 , Figures 5 to 8 In an embodiment of the present application, the muffler 2 can include a muffling air outlet 23. The shell 20 can be provided with the muffling air outlet 23 communicating with the muffling cavity 21. The muffling air outlet 23 is the gas flow discharge channel of the muffler 2. After the gas flow entering the muffling cavity 21 from the muffling air inlet 22 is muffled by the muffling cavity 21, it can be discharged to the atmosphere from the muffling air outlet 23.

[0048] With reference to Figure 1 , Figures 5 to 8 In an embodiment of the present application, the muffling air outlet 23 includes a metal pipe 231. The inner diameter of the metal pipe 231 is less than 0.7 mm. The gas entering the muffling cavity 21 from the muffling air inlet 22 is discharged through the metal pipe 231.

[0049] The exhaust passage formed by the metal pipe 231 has a small diameter, which greatly increases the expansion ratio of the sound absorption cavity 21 and the exhaust pipe, so that the sound absorber 2 forms a resistive sound absorber 2, significantly reduces the propagation of sound waves, and thus improves the sound absorption effect of the sound absorber 2. The expansion ratio refers to the parameter of the change of the cross-sectional area of the airflow when the airflow enters the metal pipe 231 from the sound absorption cavity 21. The expansion ratio can be calculated by dividing the cross-sectional area of the sound absorption cavity 21 by the cross-sectional area of the metal pipe 231.

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

[0051] In an embodiment of the present application, the diameter of the metal pipe 231 can be 0.5 mm. Calculation shows that the cross-sectional area S2 of the metal pipe 231 is about 0.2 mm2, and if the cross-sectional area S1 of the sound absorption cavity 21 is 480 mm2, then the expansion ratio of the sound absorber 2 is S2 / S1 = 2400. Through actual verification, the sound absorption amount can reach 23 dB or more. The greater the expansion ratio, the more conducive to the diffusion and reflection of sound waves, thereby reducing the energy of the sound waves and thus reducing the noise. The metal needle pipe type resistive sound absorber of the present application has good sound absorption effect, smaller volume, and better cost performance.

[0052] Referring to Figures 5 to 8 In an embodiment of the present application, the sound absorption inlet part 22 includes a sound absorption inlet 222 located in the sound absorption cavity 21. The metal pipe 231 includes a sound absorption exhaust port 2311 located in the sound absorption cavity 21. The orientation of the sound absorption inlet 222 is perpendicular to the orientation of the sound absorption exhaust port 2311. For example, the orientation of the sound absorption inlet 222 can be upward, and the orientation of the sound absorption exhaust port 2311 can be leftward or rightward, etc.

[0053] Since the orientations of the sound-attenuating air inlet 222 and the sound-attenuating air outlet 2311 are vertical, the airflow entering the sound-attenuating cavity 21 from the sound-attenuating air inlet 222 will not directly flow to the sound-attenuating air outlet 2311, but will need to change the path and diffuse, forcing the sound waves to reflect and scatter multiple times in the sound-attenuating cavity 21, thereby increasing the path and time of the sound waves in the wall of the sound-attenuating cavity 21, so that the kinetic energy of the airflow can be further consumed, and the energy of the sound waves can be further reduced, reducing the propagation of noise. In addition, this design can also improve the stability of the airflow in the sound-attenuating device 2, avoiding turbulence to cause additional noise.

[0054] Referring to Figures 5 to 8 In an embodiment of the present application, the height of the sound-attenuating air inlet 222 is higher than the bottom surface of the sound-attenuating cavity 21. The height of the sound-attenuating air outlet 2311 is also higher than the bottom surface of the sound-attenuating cavity 21.

[0055] When the air suction pump assembly 100 is arranged in the refrigeration equipment 1000, if the air suction pump 1 sucks the air in the storage chamber 1002 or other space, the airflow will carry some moisture, causing the gas discharged by the air suction pump 1 into the sound-attenuating cavity 21 to also carry some moisture. After a period of time, water may be stored in the sound-attenuating cavity 21. Since the temperature inside the refrigeration equipment 1000 is relatively low, if the water in the sound-attenuating cavity 21 enters the sound-attenuating air inlet portion 22 or the sound-attenuating air outlet portion 23, it is likely to cause the sound-attenuating air inlet portion 22 or the sound-attenuating air outlet portion 23 to freeze, thereby causing the sound-attenuating air inlet portion 22 and the sound-attenuating air outlet portion 23 to be blocked. The design that the sound-attenuating air inlet 222 and the sound-attenuating air outlet 2311 are both higher than the bottom surface of the sound-attenuating cavity 21 can ensure that there is no risk of water storage in the sound-attenuating air inlet portion 22 and the sound-attenuating air outlet portion 23 of the sound-attenuating device 2 when the air suction pump 1 stops running, thereby avoiding the freezing of the sound-attenuating air inlet portion 22 and the sound-attenuating air outlet portion 23.

[0056] In addition, designing the sound-attenuating air inlet 222 and the sound-attenuating air outlet 2311 at a height higher than the bottom surface can also reduce the accumulation of impurities in the sound-attenuating air inlet portion 22 and the sound-attenuating air outlet portion 23, which helps to keep the sound-attenuating air inlet portion 22 and the sound-attenuating air outlet portion 23 clean, reducing the airflow instability and additional noise caused by impurity accumulation. This design can prolong the service life of the sound-attenuating device 2 and reduce the maintenance frequency.

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

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

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

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

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

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

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

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

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

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

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

[0068] Referring to Figure 1 , Figures 5 to 8In an embodiment of the present application, the shell 20 comprises a shell body 201. The shell body 201 forms an inner sound attenuation chamber 21. The shell body 201 forms a main body portion 245 of a pump air inlet passage 24. The shell body 201 further forms a partition wall 246 separating the sound attenuation chamber 21 and the main body portion 245 of the pump air inlet passage 24. The main body portion 245 of the pump air inlet passage 24 penetrates through the shell body 201. The outer wall of the shell body 201 extends outwardly from one end of the main body portion 245 of the pump air inlet passage 24 to form a first cylinder 243, and extends outwardly from the other end of the main body portion 245 of the pump air inlet passage 24 to form a second cylinder 244. The first cylinder 243 forms a first passage end 241 communicating with the main body portion 245 of the pump air inlet passage 24. The second cylinder 244 forms a second passage end 242 communicating with the main body portion 245 of the pump air inlet passage 24.

[0069] By integrating the sound attenuation chamber 21 and the main body portion 245 of the pump air inlet passage 24 inside the shell body 201, the overall structure of the muffler 2 can be more compact, reducing the volume of the components, reducing the space occupation, and also enhancing the sealing performance during the air intake process of the air pump assembly 100, reducing the possibility of gas leakage.

[0070] The partition wall 246 formed in the shell body 201 is used to separate the sound attenuation chamber 21 and the main body portion 245 of the pump air inlet passage 24. The partition wall 246 not only strengthens the overall rigidity of the shell 20 in structure, but also effectively prevents mutual interference between different cavities, ensures the independent functionality of each part, helps to maintain the air tightness of the system, reduces the transmission of noise and vibration between different cavities, improves the noise control effect, and ensures the efficient working of the muffler 2.

[0071] The first cylinder 243 and the second cylinder 244 form the first passage end 241 and the second passage end 242 of the pump air inlet passage 24, respectively. This design optimizes the input and output path of the airflow. By reasonable layout of the cylinder and the passage, the airflow can be smoother when entering and discharging the pump air inlet passage 24, reducing unnecessary bending and obstacles, reducing airflow turbulence, improving the stability of the airflow, and further improving the working efficiency of the pump.

[0072] By integrating the pump air inlet passage 24, the sound attenuation chamber 21, etc. on the shell 20 of the muffler 2, a unified material and manufacturing process can be used for production, especially using injection molding integrated molding technology, which can simplify the manufacturing process, reduce the production cost, improve the matching precision between the parts, and improve the overall performance and reliability of the equipment.

[0073] Referring to Figure 1 and Figure 9In an embodiment of the present application, the pump outlet section 12 is spaced apart from the muffler inlet section 22. The pump inlet section 11 is spaced apart from the second channel end 242. The exhaust pump assembly 100 comprises an outlet connecting pipe 7 connecting the pump outlet section 12 and the muffler inlet section 22. The exhaust pump assembly 100 comprises an inlet connecting pipe 8 connecting the pump inlet section 11 and the second channel end 242.

[0074] The design of spacing apart the pump outlet section 12 from the muffler inlet section 22, and spacing apart the pump inlet section 11 from the second channel end 242, and connecting the sections by connecting pipes, avoids the bending and crossing of the connecting pipes, and allows easy accessibility of the connection points of each connecting pipe for installation and subsequent maintenance. The design also provides a clear airflow path, ensuring clear separation of the pump inlet and outlet channels, reducing complexity during installation and reducing the risk of incorrect pipe connection. The spaced apart design also ensures that the connecting pipes remain stable after installation, avoiding pipe damage or disconnection caused by excessive pipe length causing pipe swinging or vibration.

[0075] Referring to Figure 1 and Figure 9 In an embodiment of the present application, the outlet connecting pipe 7 is a flexible pipe. The inlet connecting pipe 8 is a flexible pipe. The flexible pipes can effectively absorb the vibrations generated by the exhaust pump assembly 100 during operation, helping to improve the stability of the overall system. The flexible material properties of the flexible pipes also reduce the mechanical resonance that can occur during operation of the exhaust pump 1, thereby extending the service life of the pipes and reducing the vibration and noise of the exhaust pump assembly 100. The flexible pipes can better fit the connecting components during installation, and the deformable properties of their materials allow easier tight fitting during connection to ensure the air tightness of the connection of the outlet connecting pipe 7, the inlet connecting pipe 8, the exhaust pump 1 and the muffler 2.

[0076] Referring to Figure 1 , Figure 3 , Figure 5 , Figure 9 In an embodiment of the present application, the housing body 201 comprises a first wall 204 proximal to the exhaust pump 1. The exhaust pump 1 comprises a second wall 15 spaced apart from the first wall 204. The second column 244 and the muffler inlet section 22 are both arranged on the first wall 204. The pump inlet section 11 and the pump outlet section 12 are both arranged on the second wall 15.

[0077] The pump inlet part 11 and the pump outlet part 12 of the air extraction pump 1 are arranged on the same wall surface opposite to the wall surface of the shell body 201, which can reduce the lengths of the air inlet connecting pipe 8 and the air outlet connecting pipe 7, facilitate the connection of the pump outlet part 12 and the sound-attenuating air inlet part 22, and facilitate the connection of the pump inlet part 11 and the pump air inlet channel 24. Such an arrangement not only simplifies the installation and maintenance of the pipeline of the air extraction pump assembly 100, optimizes the air flow management and system layout, but also improves the overall efficiency and performance of the equipment, reduces air flow interference, and improves the sealing performance and maintainability of the system.

[0078] With reference to Figure 1 , Figure 2 , Figure 10 In an embodiment of the present application, the air extraction pump assembly 100 comprises a mounting box 3. The air extraction pump 1 is arranged in the mounting box 3. The sound attenuator 2 is arranged in the mounting box 3. The shell 20 of the sound attenuator 2 is arranged in the mounting box 3. The mounting box 3 is closed. By placing the air extraction pump 1 and the sound attenuator 2 in the mounting box 3, the mounting box 3 can further isolate the vibration of the air extraction pump 1 and the transmission of sound waves, thereby reducing the vibration and noise of the air extraction pump assembly 100.

[0079] With reference to Figure 1 , Figure 2 and Figure 9 In an embodiment of the present application, the wall of the mounting box 3 is formed with a mounting through hole 33 cooperating with the metal pipe 231. One end of the metal pipe 231 is inserted into the mounting through hole 33. The gas in the sound attenuation cavity 21 is discharged to the outside of the mounting box 3 through the metal pipe 231. By inserting the metal pipe 231 into the mounting through hole 33 of the wall of the mounting box 3, the gas in the sound attenuation cavity 21 can be discharged to the outside of the mounting box 3.

[0080] With reference to Figure 1 , Figure 2 and Figure 9 In an embodiment of the present application, the sleeve 102 is at least partially arranged in the mounting through hole 33. One end of the sleeve 102 can abut against the outer wall of the shell 20, and the other end can be flush with or longer than the end of the metal pipe 231. By arranging the sleeve 102 to completely cover the circumferential wall of the metal pipe 231 located on the outer side of the shell 20, the metal pipe 231 can be prevented from colliding with the wall of the mounting box 3 when the metal pipe 231 is inserted into the mounting through hole 33, thereby better protecting the metal pipe 231 and preventing the metal pipe 231 from being damaged or deformed.

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

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

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

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

[0085] During installation, the silencer 2 can be moved upward relative to the cover 32, so that the first column 243 passes through the larger-diameter part of the installation long hole 36. When the metal tube 231 is opposite the installation through hole 33 of the side wall of the cover 32, the silencer 2 can be moved toward the installation through hole 33, so that the metal tube 231 is gradually inserted into the installation through hole 33. In this process, the first column 243 is gradually moved from the larger-diameter part of the installation long hole 36 to the smaller-diameter part, until the outer wall of the first column 243 abuts against the inner wall of the smaller-diameter part of the installation long hole 36. By providing the installation long hole 36 with a diameter that changes with length, the first column 243 can be easily inserted from the larger-diameter part of the installation long hole 36. Subsequently, as the first column 243 moves, the diameter of the installation long hole 36 decreases, which can better cooperate with the first column 243, achieving fixation of the first column 243.

[0086] The air suction pump 1 is installed in the box body 31. The upper ends of the air inlet connecting pipe 8 and the air outlet connecting pipe 7 are connected to the silencing air inlet part 22 and the second column 244 on the bottom wall of the silencer 2, respectively. The assembly composed of the silencer 2, the cover 32, the air inlet connecting pipe 8, and the air outlet connecting pipe 7 can be moved downward, so that the lower ends of the air inlet connecting pipe 8 and the air outlet connecting pipe 7 are connected to the pump air inlet part 11 and the pump air outlet part 12 on the top wall of the air suction pump 1, respectively. Then, the cover 32 can be connected to the box body 31 by screws or other connecting members. A box seal can be provided between the cover 32 and the box body 31. The box seal can seal the gap between the cover 32 and the box body 31, so as to reduce the vibration and noise of the air suction pump 1 from spreading outward.

[0087] Referring to Figure 1 , Figure 3 , Figure 5 , Figure 9 The pump air outlet part 12 includes a first plug-in column 13 extending from the wall of the air suction pump 1 toward the silencing air inlet part 22. The first plug-in column 13 has an air outlet channel formed inside. The silencing air inlet part 22 includes a third column 221 extending from the housing 20 toward the pump air outlet part 12. The third column 221 has an air inlet channel formed inside. One end of the air outlet connecting pipe 7 is plugged into the third column 221, and the other end is plugged into the first plug-in column 13. The air outlet connecting pipe 7 can limit the movement of the air suction pump 1 toward the silencing air inlet part 22, and limit the movement of the air suction pump 1 toward the circumference of the first plug-in column 13, thereby reducing the vibration of the air suction pump 1.

[0088] The pump air inlet part 11 comprises a second plug-in column 14 extending from the air pump 1 to the second column 244. The second plug-in column 14 is internally formed with an air inlet channel. The second column 244 extends from the shell 20 to the pump air inlet part 11. The air inlet connecting pipe 8 is plugged at one end to the second column 244 and at the other end to the second plug-in column 14. The air inlet connecting pipe 8 can limit the movement of the air pump 1 to the direction of the second column 244 and to the circumferential direction of the second plug-in column 14, thereby reducing the vibration of the air pump 1.

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

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

[0091] The upper end of the air inlet connecting pipe 8 is plugged into the second column 244, and the upper end of the air inlet connecting pipe 8 can abut against the bottom wall of the muffler 2. The lower end of the air inlet connecting pipe 8 is plugged into the second plug-in column 14, and the lower end of the air inlet connecting pipe 8 can abut against the top wall of the air pump 1. The air inlet connecting pipe 8 can limit the upward movement of the air pump 1 and the circumferential movement of the air pump 1 in the front, back, left and right directions. Through the air inlet connecting pipe 8 and the air outlet connecting pipe 7, the air pump 1 can be better limited, and the vibration and noise of the air pump 1 can be reduced.

[0092] Referring to Figure 1 , Figures 5 to 7 In an embodiment of the present application, the muffler 2 can comprise a shell cover 202. The upper end of the shell body 201 can be formed with an opening. The shell cover 202 can be used to open and close the opening at the upper end of the shell body 201. The pump air inlet channel 24 can be fixed to the shell body 201. The shell cover 202 can be formed with a displacement opening 205 cooperating with the first column 243, and the first column 243 can be inserted into the displacement opening 205. A shell seal can be arranged between the shell cover 202 and the shell body 201. The shell seal can seal the gap between the shell cover 202 and the shell body 201, improve the sealing performance of the muffler 2, and reduce noise.

[0093] Referring to Figure 1 , Figure 9 and Figure 11In an embodiment of the present application, the air outlet connecting pipe 7 comprises an air outlet pipe section 71. The air inlet end of the air outlet pipe section 71 is located below the air outlet end thereof. The air outlet pipe section 71 further comprises a floating member 9 movably arranged in the air outlet pipe section 71. When the air pump 1 is in operation, the floating member 9 is floated in the air outlet pipe section 71 under the action of the air flow.

[0094] When the air pump 1 is started, the air flow from the pump air outlet 12 to the sound-attenuating air inlet 22 causes the floating member 9 to rise and float in the air outlet pipe section 71. At this time, the kinetic energy of the air flow is partially converted into the potential energy of the floating member 9. This energy conversion can consume the energy of the air flow, thereby reducing the noise and vibration of the air flow. The floating of the floating member 9 in the air outlet pipe section 71 also generates a certain amount of aerodynamic resistance, which increases the damping effect in the air flow, thereby reducing the speed of the air flow in the air outlet pipe section 71, helping to slow down the impact and fluctuation of the air flow, and further reducing the generation of vibration and noise.

[0095] With the reduction of the air flow speed, the pressure in the air outlet pipe section 71 and the sound-attenuating cavity 21 is also reduced. The lower pressure can effectively reduce the air flow impact and air vortex phenomenon, further reducing the noise in the air flow, and reducing the vibration impact on the surrounding structure. Due to the reduction of the pressure in the air outlet pipe section 71 and the sound-attenuating cavity 21, the overall hardness of the air outlet pipe section 71 is reduced, and the softness of the air outlet pipe section 71 is improved. The vibration transmission path is effectively weakened, the sensitivity to vibration transmission is reduced, and the vibration can be better absorbed and alleviated, reducing the transmission of vibration to other parts.

[0096] The arrangement of the floating member 9 in the air outlet pipe section 71 not only converts the energy of the air flow into the potential energy of the floating member 9, but also increases the air flow damping, reduces the pressure and the hardness of the air outlet pipe section 71, thereby effectively reducing the transmission of vibration and noise of the air pump 1.

[0097] Referring to Figure 1 , Figure 9 and Figure 11 , in an embodiment of the present application, the floating member 9 is internally formed with an air flow channel 91 for the flow of air. The presence of the air flow channel 91 can disperse and slow down the speed and pressure of the air flow, thereby further reducing the vibration and noise caused by the air flow.

[0098] Referring to Figure 1 , Figure 9 and Figure 11 , in an embodiment of the present application, the outer wall of the floating member 9 is spaced from the inner wall of the air outlet pipe section 71 by an air flow space. The outer diameter of the floating member 9 is smaller than the inner diameter of the air outlet pipe section 71.

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

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

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

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

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

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

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

[0106] Referring to Figure 1 , Figure 9 and Figure 11 , in an embodiment of the present application, the sound-attenuating air inlet part 22 is located above the pump air outlet part 12. The air pump assembly 100 comprises a mounting box 3. The mounting box 3, the air pump 1, and the muffler 2 can be arranged as described above. That is, the mounting box 3 comprises a box body 31, the box body 31 has an open end with an open opening 37, the mounting box 3 comprises a box cover 32 for opening and closing the open opening 37, the air pump 1 and the muffler 2 are arranged in the box body 31, the muffler 2 is located above the air pump 1, the sound-attenuating air inlet part 22 is arranged on the bottom wall of the muffler 2, the pump air outlet part 12 is arranged on the top wall of the air pump 1, and the sound-attenuating air inlet part 22 and the pump air outlet part 12 are spaced apart from each other.

[0107] Referring to Figure 1 , Figures 5 to 7 , Figure 9 , in an embodiment of the present application, the length and radial dimension of the air outlet connecting pipe 7 are cooperatively arranged with the volume of the sound-attenuating cavity 21 to form a tubular Helmholtz resonator.

[0108] The Helmholtz resonator not only can absorb noise, but also can effectively reduce the vibration caused by airflow pulsation. When the airflow passes through the air outlet connecting pipe 7, the tubular Helmholtz resonator can suppress the pressure fluctuation caused by airflow disturbance, reduce the vibration transmission of the system structure caused by airflow impact, and thus improve the vibration reduction effect.

[0109] By adjusting the length, radial dimension of the outlet connecting pipe 7 and the volume of the sound damping cavity 21, the resonance frequency of the inserted pipe type Helmholtz resonator formed by the outlet connecting pipe 7 and the sound damping cavity 21 can be flexibly adjusted to optimize the processing for different noise frequencies and vibrations, and to improve the noise and vibration suppression capability of the system.

[0110] The parameter design of the outlet connecting pipe 7 and the sound damping cavity 21 can meet the following formula:

[0111]

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

[0113] With reference to Figure 1 , Figures 5 to 7 , Figure 9 In an embodiment of the present application, the sound damper 2 formed by the inserted pipe type Helmholtz resonator can be provided with a sound damping exhaust part 23 communicating with the sound damping cavity 21. The sound damping exhaust part 23 includes a metal pipe 231. The inner diameter of the metal pipe 231 is less than 0.7 mm. The gas in the sound damping cavity 21 is discharged through the metal pipe 231. The sound damping exhaust part 23 and the metal pipe 231 of the sound damper 2 can be as described above. Since the diameter of the metal pipe 231 is small, the sound damping cavity 21 is approximately closed, and the exhaust has a low impact on the resonance of the sound damping cavity 21 of the inserted pipe type Helmholtz resonator.

[0114] With reference to Figure 1 , Figure 9 , Figures 12 to 14In an embodiment of the present application, the gas extraction pump assembly 100 further comprises a damping member 4. The damping member 4 is fixed in the mounting box 3. The damping member 4 is internally formed with a receiving cavity 40. The damping member 4 is integrally formed of damping material. At least the bottom of the gas extraction pump 1 is fixed in the receiving cavity 40.

[0115] The damping member 4 and the receiving cavity 40 of the gas extraction pump 1 are designed such that the pump can be directly placed in the damping member 4 for fixation without additional complex fasteners, improving the installation efficiency. Since the receiving cavity 40 is integrally formed in the damping member 4, the receiving cavity 40 can not only fix the gas extraction pump 1 but also avoid direct contact between the gas extraction pump 1 and the mounting box 3, simplifying the installation structure, compacting the structure, reducing the space occupation, lowering the cost, facilitating the processing, effectively absorbing and attenuating the vibration generated by the gas extraction pump 1 during operation, thereby reducing the vibration transmission to the mounting box 3 and avoiding the adverse effects of the vibration on other components of the system.

[0116] Referring to Figure 1 , Figure 9 , Figures 12 to 14 In an embodiment of the present application, the damping member 4 comprises a damping bottom wall 41 abutting against the bottom wall of the gas extraction pump 1. The damping bottom wall 41 is provided with a downwardly protruding damping seat 411. The damping seat 411 abuts against the bottom wall of the mounting box 3.

[0117] The double design of the damping bottom wall 41 and the damping seat 411 helps to isolate the vibration source. The vibration of the gas extraction pump 1 during operation is first absorbed by the damping bottom wall 41, and the remaining vibration is further attenuated when transmitted to the bottom wall of the mounting box 3 through the damping seat 411. This layered damping structure significantly reduces the transmission of vibration, and the protruding design of the damping seat 411 can provide better stable support for the gas extraction pump 1 while maintaining the damping performance, avoiding system resonance caused by vibration accumulation.

[0118] Referring to Figure 1 , Figure 9 , Figures 12 to 14 In an embodiment of the present application, the damping seat 411 comprises a damping support wall 412. The damping support wall 412 abuts against the bottom wall of the mounting box 3. The damping seat 411 comprises a damping limiting wall 413. The 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 column 38. The damping limiting wall 413 abuts against the circumferential side wall of the limiting column 38.

[0119] The damping support wall 412 directly abuts against the bottom wall of the mounting box 3, realizing the limiting of the downward movement of the damping member 4 by the mounting box 3, so that the damping member 4 can provide basic support and damping function for the air suction pump 1. The damping limiting wall 413 realizes the lateral limiting of the damping member 4 by the mounting box 3 through abutting against the circumferential side wall of the limiting column 38, thereby enhancing the lateral stability of the damping member 4, preventing the damping member 4 from moving due to vibration or external force during the operation of the air suction pump 1, so that the damping member 4 can provide lateral limiting for the air suction pump 1, and also ensure that the air suction pump 1 always remains in the correct position, avoiding displacement or rotation during vibration.

[0120] The damping limiting wall 413 is arranged in a spaced manner with the bottom wall of the mounting box 3. The damping support wall 412 for longitudinal limiting and the damping limiting wall 413 for lateral limiting are arranged separately, which can reduce the vibration transmission of the damping member 4 to the mounting box 3. Only the damping support wall 412 directly transmits vibration to the bottom wall of the mounting box 3, while the damping limiting wall 413 directly transmits vibration to the limiting column 38, without directly transmitting vibration to the bottom wall of the mounting box 3, thereby improving the damping effect on the air suction pump 1 and reducing the vibration of the mounting box 3.

[0121] Referring to Figure 13 and Figure 14 In an embodiment of the present application, the damping limiting wall 413 is in the form of a closed ring with a tail end joint. The damping support wall 412 is arranged in a spaced manner with the damping limiting wall 413 and surrounds the outside of the damping limiting wall 413.

[0122] The closed ring-shaped damping limiting wall 413 forms a continuous structure, which can uniformly distribute and bear vibration energy in all directions, ensuring that no matter which direction the damping member 4 is subjected to vibration or impact, the limiting wall can prevent the deviation or rotation of the damping member 4 through contact with the limiting column 38. The closed ring-shaped damping limiting wall 413 provides a clear limiting and supporting area, and the installer only needs to insert the limiting column 38 into the area surrounded by the ring-shaped damping limiting wall 413 to realize the fixation and limiting of the damping member 4, without the need for excessive adjustment or alignment, thereby improving the installation efficiency.

[0123] The damping support wall 412 surrounds the outside of the damping limiting wall 413 and is arranged in a spaced manner, thereby further enhancing the effect of support and limiting. The damping support wall 412 mainly bears vertical support and damping, while the damping limiting wall 413 enhances the horizontal limiting effect through the ring design. The two cooperate with each other to make the vibration control of the equipment in the vertical and horizontal directions more efficient.

[0124] Referring to Figure 13In an embodiment of the present application, the support limiting wall has an opening 418. The opening 418 of the support limiting wall is designed to provide a damping buffer zone, allowing the damping limiting wall 413 to undergo a certain elastic deformation, thereby further absorbing and dispersing vibration energy and increasing the damping effect. The design of the opening 418 not only improves the buffering performance of the damping member 4, but also reduces stress concentration caused by excessive vibration, making the air pump assembly 100 run more smoothly. In other embodiments, the support limiting wall can also be a closed ring.

[0125] With reference to Figure 13 and Figure 14 In an embodiment of the present application, the damping limiting wall 413 includes a first ring wall 414 abutting the circumferential side wall of the limiting column 38. The damping limiting wall 413 further includes a second ring wall 415 disposed between the first ring wall 414 and the damping support wall 412. The spacing between the second ring wall 415 and the damping support wall 412 is greater than the spacing between the second ring wall 415 and the first ring wall 414. The first ring wall 414 and the second ring wall 415 are connected by a first damping rib 416. The second ring wall 415 and the damping support wall 412 are connected by a second damping rib 417.

[0126] By closely combining the first ring wall 414 with the limiting column 38, the lateral displacement of the damping member 4 is limited, avoiding the problem of deviation caused by the vibration of the air pump 1. The second ring wall 415 and the first ring wall 414 are connected by the first damping rib 416, making the entire limiting structure more stable. The spacing between the first ring wall 414 and the second ring wall 415 is less than the spacing between the second ring wall 415 and the damping support wall 412. This progressive structural design can distribute vibration forces in layers, ensuring limiting while avoiding stress concentration caused by excessive limiting of the device. By setting up a multi-layer ring wall structure, the damping performance is significantly improved, and each ring wall can withstand vibration impact in different directions and amplitudes, thereby providing more effective vibration absorption and energy dispersion for the system, significantly reducing vibration energy transmission. The first damping rib 416 and the second damping rib 417 further enhance the stability and damping effect of this multi-layer structure. The damping rib, as a structure connecting the ring walls, can not only provide support, but also undergo elastic deformation when vibration occurs, thereby absorbing vibration forces and effectively reducing vibration impact.

[0127] With reference to Figure 1 , Figure 9 , Figures 12 to 14 In an embodiment of the present application, the damping member 4 includes a damping side wall 42 abutting the front and rear walls and the left and right side walls of the air pump 1. The damping side wall 42 is spaced apart from the wall of the mounting box 3. The damping side wall 42 includes a damping limiting rib 421 protruding towards the wall of the mounting box 3.

[0128] The damping side wall 42 directly abuts against the front and rear side walls and the left and right side walls of the air suction pump 1, thereby providing all-around damping protection. This design can absorb vibration energy from different directions, whether it is front and rear vibration or left and right vibration, and the damping side wall 42 can effectively buffer, thereby improving the overall damping effect. The damping side wall 42 tightly abuts against the four side walls of the air suction pump 1, and can also effectively prevent the air suction pump 1 from shifting or shaking during operation, thereby ensuring the stable fixing of the air suction pump 1 and avoiding displacement or inclination of the air suction pump 1.

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

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

[0131] Referring to Figure 1 , Figure 9 , Figure 12 In an embodiment of the present application, the damping member 4 includes a damping upper wall 43. The damping upper wall 43 abuts against part of the top wall of the air suction pump 1. The upper end of the damping member 4 has a mounting opening 44. The air suction pump 1 is placed in the accommodating cavity 40 through the mounting opening 44.

[0132] The damping upper wall 43 can elastically deform, temporarily expand the mounting opening 44 during installation, and allow the air suction pump 1 to be easily placed into the accommodating cavity 40 of the damping member 4, thereby simplifying the installation process and enabling quick installation of the air suction pump 1. After the air suction pump 1 is placed in the accommodating cavity 40, the damping upper wall 43 returns to the initial shape and tightly abuts against and abuts against the top wall of the air suction pump 1, thereby providing fixing and limiting functions. This elastic design avoids complex fastening or additional mechanical limiting mechanisms, thereby improving installation efficiency and convenience. The damping upper wall 43 not only has a limiting function, but also provides additional damping capacity due to the properties of the elastic material. The top wall of the air suction pump 1 can vibrate vertically during operation, and the elastic deformation of the damping upper wall 43 can effectively absorb and disperse these vibrations, thereby reducing the transmission of vibration to other components.

[0133] Referring to Figures 15 to 17In an embodiment of the present application, the exhaust pump assembly 100 comprises a hanger 5. The hanger 5 comprises a connecting portion 51 arranged in the mounting box 3 and an elastic arm 52 connected to the connecting portion 51. The elastic arm 52 is integrally formed by an elastic material. The exhaust pump 1 is connected to the connecting portion 51. The elastic arm 52 is connected to the wall of the mounting box 3. The hanger 5 suspends the exhaust pump 1 in the mounting box 3 through the connecting portion 51 and the elastic arm 52.

[0134] The exhaust pump 1 is suspended in the mounting box 3 by the elastic arm 52, which can effectively reduce the transmission of vibration generated during equipment operation to the mounting box 3 and the external structure. Since the elastic arm 52 has the ability to elastically deform, when the exhaust pump 1 generates vibration during operation, the elastic arm 52 can absorb and buffer the vibration force through its own deformation, thereby significantly reducing the transmission of vibration energy to the wall of the mounting box 3, avoiding direct frictional contact between the exhaust pump 1 and the mounting box 3, not only reducing the wear of the surface of the assembly, but also avoiding noise or loss caused by friction. The elastic arm 52 is integrally formed by an elastic material, which is simple to process, convenient to form, and low in price.

[0135] Referring to Figures 15 to 17 In an embodiment of the present application, the connecting portion 51 forms an accommodation space 53 inside. The connecting portion 51 forms an accommodation opening 54 at the upper end. The lower part of the exhaust pump 1 is placed in the accommodation space 53 through the accommodation opening 54.

[0136] The connecting portion 51 forms the accommodation opening 54 and the accommodation space 53 inside, so that the installer can directly put the lower part of the exhaust pump 1 into the accommodation space 53 through the accommodation opening 54, without the need for complex fixing or alignment steps, reducing the complexity of operation during installation and improving the installation efficiency. After the lower part of the exhaust pump 1 is placed in the accommodation space 53 of the connecting portion 51, it can be fully supported and fixed. The accommodation space 53 provides a stable space, so that the lower part of the exhaust pump 1 can be firmly embedded therein and is not prone to displacement or loosening. By placing the lower part of the exhaust pump 1 in the accommodation space 53, the weight of the exhaust pump 1 can be evenly distributed on the structure of the connecting portion 51, improving the overall carrying capacity and stability.

[0137] Referring to Figures 15 to 18 In an embodiment of the present application, the elastic arm 52 comprises a free end 524 away from the side of the connecting portion 51. The free end 524 of the elastic arm 52 is provided with an elastic limiting protrusion 523. The wall of the mounting box 3 forms a fixing hole 39. The elastic limiting protrusion 523 has an outer diameter at least partially greater than the hole 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 and abuts against the outside of the wall of the mounting box 3 by elastic deformation.

[0138] The elastic limiting protrusion 523 is designed to have an outer diameter larger than the hole diameter of the fixing hole 39, which means that the protrusion must be elastically deformed to pass through the fixing hole 39 during installation. After the elastic limiting protrusion 523 passes through, it will tightly abut the outside of the installation box 3 due to its larger outer diameter than the hole diameter, forming a stable connection. This design ensures a firm connection between the elastic arm 52 and the wall of the installation box 3, effectively preventing the device from loosening or shifting during operation. Through the design of the elastic limiting protrusion 523, the installation process becomes more convenient. The installer only needs to press the protrusion through the fixing hole 39 by elastic deformation, without the need for additional fasteners such as screws and nuts. This integrated connection reduces the installation steps and improves installation efficiency. When the air pump 1 generates vibration or impact during operation, the elastic protrusion can also absorb and buffer the vibration force through its elastic deformation, reducing the impact of vibration on the wall of the installation box 3 and the elastic arm 52, further improving the vibration reduction effect of the system and ensuring the smooth operation of the air pump 1 during operation.

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

[0140] The upper elastic arm 521 and the lower elastic arm 522 provide upward and downward pulling forces to the connecting part 51, respectively. This dual-directional pulling force design ensures that the connecting part 51 is more stable in position in the installation box 3 and will not shift or loosen due to a single-directional force. Through the combined action of the upper and lower elastic arms 52, the air pump 1 can obtain stable support in multiple directions, reducing the likelihood of the air pump 1 moving up and down during operation, ensuring that the air pump 1 always remains in the correct position during operation, and avoiding displacement or tilting caused by vibration or impact.

[0141] Referring to Figures 15 to 17 In an embodiment of the present application, the upper elastic arm 521 includes a first elastic arm 5211, a second elastic arm 5212, a third elastic arm 5213, and a fourth elastic arm 5214, which are spaced apart along the circumference of the connecting part 51.

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

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

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

[0145] Reference 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 arm, and the cover 32 has a fixing hole 39 that mates with the elastic limiting protrusion 523 of the upper elastic arm. A first fixing hole, a second fixing hole, a third fixing hole, and a fourth fixing hole are respectively formed in the middle of the lower ends of the front, rear, left, and right side walls of the cover 32. The first fixing hole, the second fixing hole, the third fixing hole, and the fourth fixing hole are respectively used to mate 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.

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

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

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

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

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

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

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

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

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

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

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

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

[0158] Referring to Figure 1 , Figure 9 , Figure 10 , Figure 12 , Figure 13 In an embodiment of the present application, the damping member 4 can be as described above. The damping member 4 can include damping side walls 42 that abut against the front and rear walls and the left and right side walls of the air extraction pump 1. The damping side walls 42 are spaced apart from the side walls of the mounting box 3. The damping side walls 42 can be provided with damping limiting ribs 421 that protrude towards the walls of the mounting box 3. The damping limiting ribs 421 can abut against the counterweight 10. The damping member 4 can include a damping bottom wall 41 and a damping top wall. In other embodiments, the counterweight 10 can also be arranged between the top wall of the mounting box 3 and the damping top wall, or between the bottom wall of the mounting box 3 and the damping bottom wall 41. By arranging the counterweight 10 between the side walls of the mounting box 3 and the damping member 4, and making the damping limiting ribs 421 abut against the counterweight 10, the damping and noise reduction effect can be improved, and the wear of the damping member 4 can be reduced by avoiding direct contact between the counterweight 10 and the wall of the damping member 4.

[0159] Referring to Figure 14 , Figure 19 In an embodiment of the present application, the inner wall of the mounting box 3 is provided with a fixing rib 34. The fixing rib 34 includes a limiting plate 341 and a connecting plate 342. The limiting plates 341 are spaced apart and opposite to 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 that are spaced apart and opposite to the inner wall of the mounting box 3. The first fixing rib 343 and the second fixing rib 344 enclose a plug-in space 345. The counterweight 10 is inserted into the plug-in space 345. The limiting plates 341 of the first fixing rib 343 and the second fixing rib 344 all abut against the counterweight 10.

[0160] The first fixing rib 343 and the second fixing rib 344 can stably fix the counterweight 10 in the mounting box 3 through the insertion space 345 formed by the limiting plate 341 and the connecting plate 342. After the counterweight 10 is inserted into the insertion space 345, it abuts against the limiting plate 341 of the two fixing ribs 34, preventing the counterweight 10 from shifting or shaking during operation. This can ensure 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 fixing parts 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 taken out of the insertion space 345, making the operation more convenient.

[0161] Referring to Figure 1 and Figure 19 In an embodiment of the present application, the counterweight 10 is arranged on the left side and / or the right side and / or the front side and / or the rear side of the air extraction pump module. The bottom wall of the counterweight 10 abuts against the bottom wall of the mounting box 3. The bottom wall of the counterweight 10 is in contact with the bottom wall of the mounting box 3, providing a solid support for the counterweight 10 and enhancing the stability of the counterweight 10. The counterweight 10 can be installed on the left side, the right side, the front side, or the rear side of the equipment as needed, flexibly adapting to different design and space layout requirements.

[0162] Referring to Figure 1 and Figure 19 In an embodiment of the present application, the counterweight 10 includes a first counterweight 104 and a second counterweight 105. The first counterweight 104 and the second counterweight 105 are oppositely arranged on the left and right sides or the front and rear sides of the air extraction pump module.

[0163] By arranging the first counterweight 104 and the second counterweight 105 on the left and right sides or the front and rear sides of the air extraction 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 extraction pump assembly 100 during operation can be better absorbed and dispersed, preventing the equipment from shaking or tilting due to the shift of the center of gravity, thereby improving the overall stability.

[0164] In an embodiment of the present application, the material of the counterweight 10 is stainless steel. By using stainless steel as the material of the counterweight 10, the equipment not only has higher corrosion resistance, impact resistance, and vibration reduction effect, but also has longer service life and better operation stability. In other embodiments of the present application, the counterweight 10 can also be made of other materials, such as copper.

[0165] Referring to Figure 1 and Figure 19In an embodiment of the present application, the counterweight 10 is in the shape of a rectangular block. The rectangular block-shaped counterweight 10 is simple and stable in shape, and can form a large-area contact with the inner wall or bottom wall of the mounting box 3 to provide stable support. The rectangular block-shaped counterweight 10 also has the advantages of easy manufacturing and processing, thereby reducing production costs.

[0166] With reference to Figure 1 and Figure 19 In an embodiment of the present application, the first counterweight 104 and the second counterweight 105 are identical in shape and weight. The weight of the first counterweight 104 and the second counterweight 105 is greater than or equal to 100g. Preferably, the weight of the first counterweight 104 and the second counterweight 105 is 100g.

[0167] With reference to Figure 1 , Figure 9 , Figure 10 In an embodiment of the present application, the air suction pump 1 is at least partially positioned outside the damping member 4. The air suction pump assembly 100 includes a foam 101. The foam 101 covers at least the peripheral wall of the top portion of the air suction pump 1 positioned outside the damping member 4. The foam 101 is a material with high elasticity and flexibility, which can effectively absorb vibrations and impacts. Covering the foam 101 on the peripheral wall of the top portion of the air suction pump 1 can further buffer the vibrations generated by the operation of the air suction pump assembly 100, and reduce the transmission of vibration energy. The foam 101 also reduces friction and wear between the air suction pump 1 and other components, thereby prolonging the service life of the air suction pump 1.

[0168] With reference to Figure 1 , Figure 9 , Figure 10 In an embodiment of the present application, the box cover 32 is provided with a downwardly protruding limiting rib 35, which abuts against the peripheral side surface of the foam 101. By providing the downwardly protruding limiting rib 35 on the box cover 32 and abutting it against the peripheral side surface of the foam 101, not only is the wear and displacement of the foam 101 prevented, but the fixing and damping effects of the foam 101 are also effectively improved.

[0169] With reference to Figure 1 , Figure 2 , Figure 20 In an embodiment of the present application, the air suction pump assembly 100 includes an air suction pump module and a noise reduction and damping assembly 6 arranged outside the air suction pump module. The noise reduction and damping assembly 6 includes a metal plate 61 and a damping layer 62. The damping layer 62 covers at least one side of the metal plate 61.

[0170] ​The metal plate 61 has a shielding effect on noise due to the high density of metal materials, which makes it difficult for sound waves to penetrate. The damping layer 62 can absorb high-frequency noise, while the metal plate 61 can reflect low-frequency noise, forming a double noise suppression mechanism and further enhancing the noise reduction effect. The metal plate 61 can increase the overall weight of the air suction pump assembly 100, reducing the vibration of the air suction pump assembly 100. The presence of the damping layer 62 can also effectively absorb the vibration generated when the air suction pump assembly 100 is running, reducing the transmission of vibration to the outside. Therefore, the damping effect can be further enhanced. The combination of the metal plate 61 and the damping layer 62 makes the damping and noise reduction assembly have a certain softness while also having a certain rigidity, which can better resist vibration and impact and also provide support for the air suction pump module.

[0171] The noise reduction and damping assembly 6 is designed in a modular manner by the metal plate 61 and the damping layer 62, simplifying the installation process of the equipment. The metal plate 61 and the damping layer 62 can be installed on the outside of the air suction pump module at one time, reducing additional installation steps and making subsequent maintenance and replacement more convenient. Maintenance personnel can easily disassemble or reinstall the noise reduction and damping assembly 6, improving efficiency.

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

[0173] Referring to Figure 1 , Figure 2 , Figure 20 In an embodiment of the present application, the air suction pump module can include a mounting box 3 and an air suction pump 1 arranged in the mounting box 3. The noise reduction and damping assembly 6 is arranged outside the mounting box 3. The metal plate 61 is spaced apart from the wall of the mounting box 3. The damping layer 62 covers at least one side of the metal plate 61 facing the wall of the mounting box 3. The damping layer 62 is in contact with the wall of the mounting box 3. The mounting box 3 can be as described above.

[0174] The damping layer 62 directly contacts the wall of the mounting box 3, which can effectively absorb the vibration generated when the air suction pump 1 is running, preventing the transmission of these vibration energies to the outside of the mounting box 3. The damping layer 62 acts as a buffer, reducing the impact of vibration on the mounting box 3 and avoiding direct friction and wear of the mounting box 3. In addition to the damping and noise reduction effect, the metal plate 61 also provides an additional physical barrier to prevent the mounting box 3 from being impacted or physically damaged by the outside world, thereby improving the overall damping, noise reduction, and impact resistance of the air suction pump assembly 100 and its durability.

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

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

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

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

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

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

[0181] Referring to Figure 20 In an embodiment of the present application, the thickness of the metal plate 61 is greater than or equal to 4 mm. The thickness of the first 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 weight of the thicker metal plate 61 is also relatively high, thereby reducing the noise and vibration generated when the air suction pump 1 is running. The thickness of the first damping layer 621 and the second damping layer 622 is greater than twice the thickness of the metal plate 61, and the thick damping layer 62 can effectively absorb noise and vibration energy, and further block the noise and vibration reflected by the metal plate 61, achieving better noise reduction and vibration reduction effect. By using a metal plate 61 and a damping layer 62 with a larger thickness, better cushioning and protection can be provided to avoid damage to the air suction pump assembly 100 due to external impact or vibration.

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

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

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

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

[0186] By arranging the noise and vibration reduction assembly 6 in six directions (up, down, front, rear, left, right) of the mounting box 3, omnidirectional vibration reduction protection and sound insulation effects are achieved. The metal plate 61 in each direction is spaced apart from the wall of the mounting box 3 and contacts the wall of the mounting box 3 through the vibration reduction layer 62, ensuring the vibration reduction performance, impact resistance, and durability of the noise and vibration reduction assembly 6. This design greatly reduces the mechanical wear of the mounting box 3, prolongs the service life of the air suction pump assembly 100, and improves the protection performance of the air suction pump assembly 100 in complex environments.

[0187] Referring to Figure 4 , Figure 20 , Figure 21In an embodiment of the present application, the storage compartment 1002 comprises a refrigeration compartment 1004. The air extraction pump assembly 100 is arranged in the refrigeration compartment 1004. Arranging the air extraction pump assembly 100 in the refrigeration compartment 1004 can utilize the inner liner, the thermal insulation layer and the door body 1003 of the refrigeration compartment 1004 to isolate the noise and vibration of the air extraction pump assembly 100 from being transmitted to the outside, so as to avoid affecting the user's life and improve the user's experience. The target air extraction space of the air extraction pump assembly 100 can be the refrigeration compartment 1004 or a certain local space in the refrigeration compartment 1004. Arranging the air extraction pump assembly 100 in the refrigeration compartment 1004 and the target air extraction space in the refrigeration compartment 1004 can facilitate the connection between the air extraction pump assembly 100 and the target air extraction space and simplify the connection path.

[0188] Referring to Figure 4 , Figure 20 , Figure 21 In an embodiment of the present application, the refrigeration device 1000 comprises a barrel 1005 arranged in the refrigeration compartment 1004. The barrel 1005 has a front end open to form a front opening. The refrigeration device 1000 comprises a drawer 1006 arranged in the barrel 1005 and being drawable. The air extraction pump assembly 100 is arranged between the rear wall of the barrel 1005 and the rear wall of the refrigeration compartment 1004. The metal plate 61 is spaced apart from the wall of the barrel 1005 or the wall of the refrigeration compartment 1004. The damping layer 62 is in contact with the wall of the barrel 1005 or the wall of the refrigeration compartment 1004.

[0189] The wall of the barrel 1005 and the wall of the refrigeration compartment 1004 surround the mounting space of the air extraction pump assembly 100. The damping layer 62 can be bonded to the wall of the barrel 1005 or the wall of the refrigeration compartment 1004. The first damping layer 621 is located between the metal plate 61 and the wall of the mounting box 3, and the second damping layer 622 is located between the metal plate 61 and the wall of the barrel 1005 or the wall of the refrigeration compartment 1004. The internal space of the barrel 1005 is the target air extraction space of the air extraction pump assembly 100. By bonding the damping layer 62 to the wall of the barrel 1005 or the wall of the refrigeration compartment 1004, the mounting process is simplified, and the stable connection between the noise reduction and vibration reduction assembly 6 and the wall of the barrel 1005 and the wall of the refrigeration compartment 1004 is ensured without the need for additional fixing devices. In this way, the complexity of the assembly steps is reduced, and the firmness of the device installation and the vibration reduction effect are ensured.

[0190] The damping layer 62 is arranged between the metal plate 61 and the wall of the barrel 1005 or the wall of the refrigeration compartment 1004, which can effectively absorb and buffer the vibration generated during the operation of the air extraction pump assembly 100, prevent the vibration from being transmitted to the wall of the barrel 1005 and the wall of the refrigeration compartment 1004, and prevent mechanical friction or collision between the air extraction pump assembly 100 and other components of the barrel 1005 or the refrigeration compartment 1004. In this way, the influence of the vibration on the refrigeration device 1000 and the internal environment of the refrigeration compartment 1004 is reduced, the noise interference of the device is reduced, and the user's experience is improved.

[0191] The air extraction pump assembly 100 is arranged between the rear wall of the cylinder 1005 and the rear wall of the refrigeration chamber 1004. By optimizing the space design, the idle space in the refrigeration chamber 1004 is effectively utilized. Not only does it not occupy the effective storage space of the refrigeration chamber 1004, but also hides the mechanical parts of the device, improves the overall space structure compactness, and the air extraction pump assembly 100 is set at the rear side of the refrigeration chamber 1004 far from the refrigeration door, which prolongs the propagation path of noise and vibration and reduces external noise interference.

[0192] The first column 243 and the space in the cylinder 1005 can be provided with a connecting pipeline, and the connecting pipeline can be provided with an oxygen-permeable membrane, etc., so that the air extraction pump 1 can extract oxygen in the cylinder 1005, and a low-oxygen environment is formed in the cylinder 1005 to prolong the storage time of food materials in the cylinder 1005. The oxygen-permeable membrane is a special membrane material that allows oxygen to pass through, which limits the passage of other gases. The oxygen-permeable membrane can selectively control the inflow or outflow of oxygen, helping to maintain the oxygen concentration in the cylinder 1005 within a predetermined range. By extracting oxygen inside the cylinder 1005 through the air extraction pump 1, a low-oxygen environment is formed, which can significantly prolong the shelf life of fruits, vegetables, meat and other foods, and slow down the oxidation reaction and microbial reproduction.

[0193] In summary, the air extraction pump assembly 100, the manufacturing method of the air extraction pump assembly 100, and the refrigeration equipment 1000 of the present application can solve the problem that the existing design of the air extraction pump 1 will generate vibration and noise during operation, affecting the user's experience. By using the technical solution of the present application, the vibration and noise of the air extraction pump assembly 100 can be reduced, and the user's experience can be improved.

[0194] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0195] The above series of detailed descriptions are only specific descriptions of the feasible embodiments of the present patent, and are not intended to limit the protection scope of the present patent. Any equivalent embodiments or changes made without departing from the spirit of the present patent should be included in the protection scope of the present patent.

Claims

1. A gas booster pump assembly (100) characterized by, The application relates to a pump assembly (100) comprising a mounting box (3) and a suction pump (1) arranged in the mounting box (3), wherein the pump assembly (100) comprises a suspension (5) comprising a connecting part (51) arranged in the mounting box (3) and an elastic arm (52) connected with the connecting part (51), the elastic arm (52) is integrally formed by elastic material, the suction pump (1) is connected with the connecting part (51), the elastic arm (52) is connected to the wall of the mounting box (3), and the suspension (5) suspends the suction pump (1) in the mounting box (3) through the connecting part (51) and the elastic arm (52).

2. A gas pump assembly (100) as claimed in claim 1, characterized in that The connecting part (51) is internally formed with a containing space (53), the upper end of the connecting part (51) is formed with a containing opening (54), and at least the lower part of the suction pump (1) is arranged in the containing space (53) through the containing opening (54).

3. The gas pump assembly (100) of claim 1, wherein, The free end (524) of the elastic arm (52) is provided with an elastic limiting protrusion (523), the wall of the mounting box (3) is formed with a fixing hole (39), the outer diameter of the elastic limiting protrusion (523) is greater than the hole diameter of the fixing hole (39) at least in part, and the elastic limiting protrusion (523) passes through the fixing hole (39) from the inner side of the mounting box (3) and abuts against the outer side of the wall of the mounting box (3) through elastic deformation.

4. A gas booster pump assembly (100) as claimed in claim 2, characterized in that, The elastic arm (52) comprises a free end (524) away from the side of the connecting part (51), the elastic arm (52) comprises an upper elastic arm (521) and a lower elastic arm (522), the free end (524) of the upper elastic arm (521) is connected to the wall of the mounting box (3) above the connecting part (51) to provide upward tension to the connecting part (51), and the free end (524) of the lower elastic arm (522) is connected to the wall of the mounting box (3) below the connecting part (51) to provide downward tension to the connecting part (51).

5. A gas pump assembly (100) as claimed in claim 4, characterized in that The upper elastic arm (521) comprises a first elastic arm (5211), a second elastic arm (5212), a third elastic arm (5213) and a fourth elastic arm (5214) which are spaced apart along the circumference of the connecting part (51).

6. A gas pump assembly (100) as claimed in claim 5, characterized in that The first elastic arm (5211) is located on the front side of the connecting part (51) and connected to the upper middle part of the front wall of the connecting part (51), the second elastic arm (5212) is located on the rear side of the connecting part (51) and connected to the upper middle part of the rear wall of the connecting part (51), the third elastic arm (5213) is located on the left side of the connecting part (51) and connected to the upper middle part of the left wall of the connecting part (51), the fourth elastic arm (5214) is located on the right side of the connecting part (51) and connected to the upper middle part of the right wall of the connecting part (51), and the lower elastic arm (522) is located below the connecting part (51) and connected to the middle part of the bottom wall of the connecting part (51).

7. A gas booster pump assembly (100) as claimed in claim 4, characterized in that The installation box (3) comprises a shell main body (201), the upper end of the shell main body (201) is provided with an open opening (37), the installation box (3) comprises a box cover (32) for opening and closing the open opening (37), the air suction pump (1) and the connecting part (51) are arranged in the shell main body (201), the free end (524) of the upper elastic arm (521) is connected to the box cover (32), and the free end (524) of the lower elastic arm (522) is connected to the bottom wall of the shell main body (201).

8. A gas booster pump assembly (100) as claimed in claim 2, characterized in that, The connecting part (51) and the elastic arm (52) are integrally formed by an elastic material, and the elastic material is rubber.

9. A gas booster pump assembly (100) as claimed in claim 3, characterized in that, The elastic limiting protrusion (523) gradually decreases in the outer diameter along the direction close to the end of the free end (524) of the elastic arm (52).

10. A refrigerating appliance (1000) comprising a cabinet (1001), a storage compartment (1002) formed in the cabinet (1001), a door body (1003) for opening and closing the storage compartment (1002), characterized in that, The refrigeration equipment (1000) further comprises the air suction pump assembly (100) according to any one of claims 1-9, and the storage chamber (1002) comprises a refrigeration chamber (1004), and the air suction pump assembly (100) is arranged in the refrigeration chamber (1004).

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