A damping and silencing mechanism for air pumps

Abstract

The utility model discloses a kind of damping silencing mechanisms for air pump, including main fixed frame, detachable mounting has sound-absorbing fixed partition in one side of the main fixed frame, the main fixed frame and sound-absorbing fixed partition form closed noise reduction space, pump body is equipped in the noise reduction space.Sound-absorbing fixed partition is detachably connected with the main fixed frame, cooperation half-wrapping part design, both ensure structural stability, and simplify dismounting maintenance process, without integral disassembly can overhaul component such as air pump, air pipe, solve the malpractice of inconvenient maintenance of full-wrapping structure.

Description

Technical Field

[0001] This utility model relates to a vibration damping and noise reduction mechanism for an air pump, belonging to the field of noise reduction technology. Background Technology

[0002] During the operation of pump-type equipment, especially air pumps and vacuum pumps used for vacuuming in washing machines, the vibrations generated during operation and the interaction between gas and pipes can easily cause significant noise. This includes noise generated by the vibration transmission of the air pump itself and pulse noise generated by the airflow in the pipes. These noises can affect the user experience.

[0003] In existing technologies, although sound-absorbing methods such as sound-absorbing cotton are used for noise reduction, the effect is limited and may hinder heat dissipation. Some solutions achieve noise reduction by setting up modules such as vacuum jackets with fully enclosed structures; however, such structures are difficult to manufacture, the air extraction operation is complicated, and vibrations are easily transmitted to the outside through the connection points, resulting in poor noise reduction. At the same time, fully enclosed structures also have the problems of high cost and inconvenience for equipment disassembly and maintenance. In addition, in traditional fixing methods, if only flexible vibration damping structures are used to support the pump body, the pump body and other precision components are prone to collision with surrounding structures due to equipment shaking during transportation, which not only aggravates noise but may also cause damage to components.

[0004] To address the aforementioned problems in the existing technology, improvements are needed to the vibration damping and noise reduction mechanism for pumps. Utility Model Content

[0005] The purpose of this utility model is to provide a vibration damping and noise reduction mechanism for air pumps, addressing the aforementioned problems such as limited noise reduction effect, complex structure, high cost, inconvenient maintenance, and susceptibility to damage from collisions.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A vibration damping and noise reduction mechanism for an air pump includes a main fixed frame, on one side of which a noise reduction fixed partition is detachably installed, and a sealed noise reduction space is formed between the main fixed frame and the noise reduction fixed partition, and a pump body is disposed within the noise reduction space.

[0008] Alternatively, the main fixing frame and / or the sound-absorbing fixing partition may have a semi-enclosed portion.

[0009] Alternatively, the pump body is connected to a bracket, which is connected to the main fixed frame and / or a sound-absorbing fixed partition via a vibration damper.

[0010] Alternatively, the pump body is positioned above the bracket, which is connected to the bottom of the main fixing frame and / or the sound-absorbing fixing partition.

[0011] Alternatively, one end of the vibration damper is connected to the bracket, and the other end of the vibration damper is connected to the main fixed frame or the sound-absorbing fixed partition; the vibration damper is provided with a damping part in the middle of the bracket and the main fixed frame or the sound-absorbing fixed partition.

[0012] Alternatively, the main fixing frame and / or the silencing fixing partition are provided with a silencing box, and an air pipe is connected to the outside of the pump body, the air pipe passing through the silencing box and connecting to the air pump.

[0013] Alternatively, the silencer box may be located at the end where the air pipe connects to the air pump.

[0014] Alternatively, the cross-section of the silencer box along the direction of the trachea is larger at the middle than at both ends.

[0015] Alternatively, the sound-absorbing fixing partition may be provided with a wire clip on the outside.

[0016] Alternatively, the inner side of the sound-absorbing fixing partition is provided with a shock-absorbing pad, which is arranged opposite to the air pump.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] 1. The vibration damping and noise reduction mechanism for air pumps provided by this utility model has a detachable connection between the noise reduction fixing partition and the main fixing frame. Combined with the semi-enclosed part design, it not only ensures structural stability but also simplifies the disassembly and maintenance process. The air pump, air pipe and other components can be inspected and repaired without the need for overall disassembly, which solves the disadvantage of the inconvenience of maintenance of the fully enclosed structure.

[0019] 2. The vibration damping and noise reduction mechanism for an air pump provided by this utility model has the pump body indirectly connected to the vibration damping body through a bracket. The damping part in the middle of the vibration damping body can efficiently absorb vibration energy and block the transmission of vibration to the main fixed frame or the noise reduction fixed partition, thus avoiding the generation of secondary noise. At the same time, the noise reduction box located at the end of the air pipe with a cross-section in the middle larger than that at both ends can specifically reduce the airflow pulse noise, thereby achieving dual control of mechanical vibration noise and airflow noise, and solving the problem of limited effectiveness of traditional noise reduction methods.

[0020] 3. The vibration damping and noise reduction mechanism for air pumps provided by this utility model has a vibration damping pad on the inner side of the noise reduction fixing partition that can prevent rigid collision between the air pump and the partition, reducing damage to components caused by shaking during transportation or operation; the design of the bracket connected to the bottom enhances the stability of the pump body, reduces the risk of failure of precision components caused by vibration or collision, and extends the service life of the equipment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a washing machine without its side panels.

[0022] Figure 2 This is a three-dimensional schematic diagram of the outer side of the sound-absorbing fixed partition.

[0023] Figure 3 This is a three-dimensional top view of the internal structure of the sound-absorbing fixed partition.

[0024] Figure 4 This is a three-dimensional, bottom-view diagram of the interior of the sound-absorbing fixed partition.

[0025] The markings in the diagram are: 1-Main fixed frame, 2-Silence fixed partition, 3-Pump body, 4-Bracket, 5-Vibration damper, 6-Silence box, 7-Air pipe, 8-Wire clip, 9-Shock damping pad. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings.

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0028] A vibration damping and noise reduction mechanism for an air pump, such as Figure 1-4 As shown, it includes a main fixing frame 1, and a sound-absorbing fixing partition 2 is detachably installed on one side of the main fixing frame 1. A sealed noise reduction space is formed between the main fixing frame 1 and the sound-absorbing fixing partition 2, and a pump body 3 is provided in the noise reduction space.

[0029] The main fixed frame 1 serves as the load-bearing foundation, providing stable support for the overall structure. The sound-absorbing fixed partition 2 not only has sound insulation function, reducing noise transmission, but also allows for flexible assembly and disassembly of the structure through its detachable connection with the main fixed frame 1. The sealed noise reduction space formed by the two effectively limits the propagation of noise generated by the pump body 3 within the space, reducing noise leakage to the external environment, and simultaneously reducing the efficiency of airborne noise transmission through the sealed environment. The sealed noise reduction space directly addresses the problems of noise diffusion and limited noise reduction effect in existing technologies by reducing the noise propagation path through physical isolation, thereby enhancing the noise reduction effect. The detachable installation design of the sound-absorbing fixed partition 2 and the main fixed frame 1 solves the problems of inconvenient disassembly and maintenance and high cost of the fully enclosed structure in existing technologies, reducing maintenance difficulty and processing costs. The combined structure of the main fixed frame 1 and the sound-absorbing fixed partition 2 avoids direct connection between the pump body 3 and the external structure, reducing the transmission of vibration of the pump body 3 to the outside, alleviating the problem of noise transmission through the connection points in existing technologies, and is easier to implement than the fully enclosed structure, balancing noise reduction effect and practicality.

[0030] Example 2

[0031] As an optional implementation, the main fixing frame 1 and / or the sound-absorbing fixing partition 2 have a semi-enclosed portion. While ensuring the constraint and isolation of the main noise and vibration of the pump body 3, this simplifies the structural processing difficulty, reduces material costs, and solves the problem of inconvenient maintenance of a fully enclosed structure through a detachable design. This embodiment can be implemented in three ways: the main fixing frame 1 adopts a flat design, providing stable support as the basic load-bearing structure; its flat surface can be directly connected to other structures of the equipment, simplifying overall installation. The sound-absorbing fixing partition 2 has an inwardly recessed semi-enclosed portion. The inner side of the semi-enclosed portion corresponds to the main noise source and vibration area of ​​the pump body 3. When the sound-absorbing fixing partition 2 is detachably connected to the main fixing frame 1, the semi-enclosed portion surrounds the pump body 3, forming a sealed noise reduction space. The semi-enclosed portion of the main fixing frame 1 can pre-enclose the pump body 3 at the bottom, top, and sides, undertaking the main vibration constraint and noise isolation functions; the sound-absorbing fixing partition 2 is flat and installed as a detachable cover on the open side of the main fixing frame 1, cooperating with the semi-enclosed portion of the main fixing frame 1. Both the main fixing frame 1 and the sound-absorbing fixing partition 2 have a semi-enclosed part. For example, the semi-enclosed part of the main fixing frame 1 can be designed to enclose the left half of the pump body 3, and the semi-enclosed part of the sound-absorbing fixing partition 2 corresponds to enclosing the right half of the pump body 3. The edges of the semi-enclosed parts of the two are adapted to be joined together, and after splicing, a multi-faceted enclosed space is formed around the pump body 3.

[0032] Example 3

[0033] As an optional implementation method, such as Figure 3 , 4 As shown, the pump body 3 is connected to a bracket 4, and the bracket 4 is connected to the main fixed frame 1 and / or the sound-absorbing fixed partition 2 via a vibration damper 5. The pump body 3 is connected to the bracket 4, which, as an intermediate load-bearing structure, concentrates the weight and vibration of the pump body 3 to the vibration damper 5, preventing the pump body 3 from directly contacting the main fixed frame 1 or the sound-absorbing fixed partition 2, thus reducing the direct path of vibration transmission. The vibration damper 5, as a flexible connecting component, can absorb the vibration energy generated by the pump body 3 through its own deformation, blocking the transmission of vibration from the bracket 4 to the main fixed frame 1 and / or the sound-absorbing fixed partition 2, thereby reducing secondary noise caused by vibration transmission. Simultaneously, the combination of the bracket 4 and the vibration damper 5 can also provide stable support for the pump body 3, preventing the pump body 3 from shaking and colliding with surrounding structures during transportation or operation, reducing the risk of component damage. In this embodiment, there are three possible scenarios: one end of the bracket 4 fixes the pump body 3, and the other end is connected to the main fixed frame 1 via the vibration damper 5; the sound-absorbing fixed partition 2 only serves as a sound insulation component, cooperating with the main fixed frame 1 to form a noise reduction space, and does not participate in vibration load bearing. The bracket 4 is connected to the sound-absorbing fixed partition 2 via vibration dampers 5. The main fixed frame 1 serves as the basic frame for installation positioning and does not directly contact the bracket 4 or the vibration dampers 5. The bracket 4 is connected to the main fixed frame 1 and the sound-absorbing fixed partition 2 via multiple vibration dampers 5.

[0034] Example 4

[0035] As an optional implementation, the pump body 3 is positioned above the bracket 4, and the bracket 4 is connected to the bottom of the main fixing frame 1 and / or the sound-absorbing fixing partition 2. With the pump body 3 positioned above the bracket 4, due to gravity, the bracket 4 becomes the direct load-bearing component of the pump body 3, centrally bearing the weight of the pump body 3 and the vibrations generated during operation. This avoids direct contact between the pump body 3 and the main fixing frame 1 or the sound-absorbing fixing partition 2, reducing the direct transmission of vibration from the pump body 3 to the surrounding structure. The bracket 4, connected to the bottom of the main fixing frame 1 and / or the sound-absorbing fixing partition 2, provides stable support to the bracket 4 through the bottom structure, further constraining the displacement of the pump body 3. Especially during transportation or when the pump body 3 experiences high-frequency vibration, this significantly reduces the swaying amplitude of the pump body 3, minimizing collision noise and the risk of component damage caused by swaying. In this embodiment, the specific implementation of the semi-enclosed portion can be one of the following three scenarios: 1) The bracket 4 is only connected to the bottom of the semi-enclosed portion of the main fixing frame 1. In this case, the bottom of the main fixing frame 1 serves as the core support foundation, bearing the main weight and vibration load of the pump body 3, while the sound-absorbing fixing partition 2 primarily functions as a sound insulation unit. 2) The bracket 4 is only connected to the bottom of the semi-enclosed portion of the sound-absorbing fixing partition 2. The bottom of the sound-absorbing fixing partition 2 has both support and sound insulation functions, while the main fixing frame 1 serves as an auxiliary positioning structure. 3) The bracket 4 connects both the bottom of the semi-enclosed portion of the main fixing frame 1 and the bottom of the semi-enclosed portion of the sound-absorbing fixing partition 2, forming a double-bottom support. This improves overall stability by distributing the load, and is particularly suitable for scenarios where the pump body 3 is heavy or experiences strong vibration. It should be noted that this embodiment is only an optional implementation. Therefore, in other embodiments, the pump body 3 can be mounted on the side and top of the main fixing frame 1 and / or the sound-absorbing fixing partition 2 using the bracket 4.

[0036] Example 5

[0037] As an optional implementation, one end of the vibration damper 5 is connected to the bracket 4, and the other end of the vibration damper 5 is connected to the main fixed frame 1 or the sound-absorbing fixed partition 2. The vibration damper 5 has a damping section located in the middle of the bracket 4 and the main fixed frame 1 or the sound-absorbing fixed partition 2. The two ends of the vibration damper 5 are connected to the bracket 4 and the main fixed frame 1 or the sound-absorbing fixed partition 2 respectively, avoiding rigid contact between the bracket 4 and the main fixed frame 1 / sound-absorbing fixed partition 2, thus reducing the direct transmission of vibration at the source. The damping section located in the middle can absorb the vibration energy transmitted from the pump body 3 through the bracket 4 through its own material properties or structural design. The vibration damper has limiting parts at both ends, which can accurately lock the connection position of the vibration damper 5 with the bracket 4, the main fixed frame 1, or the sound-absorbing fixed partition 2, preventing the vibration damper 5 from shifting or falling off when the pump body 3 vibrates or shakes during transportation, ensuring the stability of the connection. The damping component is a damping ball, whose elastic material can absorb the vibration energy transmitted from the pump body 3 to the support 4 through its own deformation, gradually attenuating the vibration in the transmission path, thereby blocking the transmission of vibration from the support 4 to the main fixed frame 1 or the sound-absorbing fixed partition 2, reducing secondary noise caused by vibration transmission at the source. The number of damping bodies 5 can be 3, achieving stable support for the pump body 3 with the minimum number, reducing material usage and cost, while avoiding structural redundancy and maintenance complexity caused by too many damping bodies 5.

[0038] Example 6

[0039] As an optional implementation, a silencer box 6 is provided on the main fixed frame 1 and / or the silencer fixed partition 2. An air pipe 7 is externally connected to the pump body 3, and the air pipe 7 passes through the silencer box 6 and connects to the air pump. When the air pump is working, the airflow in the air pipe 7 will generate periodic pulses, forming high-frequency noise. The silencer box 6, by expanding the airflow space or internal structure, buffers and disperses the airflow pulses within the box, reducing noise energy and preventing it from propagating outward through the air or solid structure. Combined with the sealed noise reduction space formed by the main fixed frame 1 and the silencer fixed partition 2, the silencer box 6's treatment of the air pipe 7 noise and the overall structure's vibration reduction design work synergistically to achieve dual control of the air pump's mechanical vibration noise and airflow noise, improving the overall noise reduction capability. In this embodiment, the following form can be adopted: a cavity is opened on the main fixed frame 1 or the silencer box 6 as the silencer box 6, through which the air pipe 7 passes; the silencer box 6 is set independently and connected to the main fixed frame 1 and / or the silencer fixed partition 2.

[0040] Example 7

[0041] As an optional implementation, the silencer box 6 is located at the end of the air pipe 7 where it connects to the air pump. When the air pump is working, the gas at the outlet end generates a strong airflow pulse due to a sudden pressure change. This is the main source of airflow noise. The design close to the noise source significantly improves noise reduction efficiency. Compared to setting the silencer device in the middle or end of the air pipe 7, it can more directly block the propagation path of the pulse noise and reduce energy loss. Furthermore, the end-integrated layout makes the connection between the silencer box 6 and the air pump and air pipe 7 more compact, saving internal space of the equipment.

[0042] Example 8

[0043] As an optional implementation, the silencing box 6 has a larger cross-section in the middle than at both ends along the direction of the air pipe 7. When the airflow generated by the air pump enters the silencing box 6 through the air pipe 7, it transitions from a narrow cross-section at both ends to a wide cross-section in the middle. The airflow space suddenly expands, the flow velocity decreases, and the pressure is released, which can effectively reduce turbulent noise caused by violent airflow disturbance. At the same time, when the sound waves pass through the space with the changing cross-section, they will be reflected, refracted, and interfered at the interface between the narrow end and the wide end. The wide space in the middle also provides more reflection paths for the sound waves, so that some sound waves cancel each other out internally. The noise intensity is significantly reduced through energy dissipation, weakening the propagation energy of airflow noise from the source.

[0044] Example 9

[0045] As an optional implementation method, such as Figure 2 As shown, the outer side of the silencing fixing partition 2 is provided with wire clips 8. This allows the connection and maintenance of circuit terminals to be completed directly from the outside without disassembling the silencing fixing partition 2, greatly simplifying the assembly and maintenance process and reducing the difficulty and time cost of maintenance.

[0046] Example 10

[0047] As an optional implementation method, such as Figure 3 , 4 As shown, the inner side of the sound-absorbing fixed partition 2 is provided with a shock-absorbing pad 9, which is positioned opposite to the air pump. The vibrations generated during air pump operation, due to the flexible structure of the damping body 5, may cause this precision component to malfunction due to repeated impacts with the partition. The shock-absorbing pad 9, being a soft pad, acts as a flexible isolation layer, directly absorbing the impact force from accidental collisions between the air pump and the partition (collisions generally do not occur during normal use), preventing rigid contact between the air pump and the partition, thereby reducing additional noise caused by collisions. Furthermore, during transportation, even though the bracket 4 and the damping body 5 provide basic support for the air pump, equipment swaying may still cause slight displacement of the air pump. The shock-absorbing pad 9 can limit the swaying amplitude of the air pump through its own deformation, preventing damage from frequent impacts with the partition and extending the service life of the equipment.

[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. The present utility model extends to any new features or combinations disclosed in this specification, and any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model. It is obvious to those skilled in the art that the present utility model is not limited to the details of the above exemplary embodiments, and that detailed technical features not disclosed in this embodiment, such as specific structures, are existing technologies that can be directly applied to this solution, and those skilled in the art can obtain them from the prior art; the connection method can be a fixed connection, a detachable connection, or an integral part; it can be a fixed connection, a movable connection, or a hinged connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific manner of the above terms in the embodiments of the present utility model according to the specific circumstances, and the present disclosure does not specifically limit this aspect.

Claims

1. A vibration damping and noise reduction mechanism for an air pump, characterized in that: Includes a main fixing frame (1), on one side of which a sound-absorbing fixing partition (2) is detachably installed, and a sealed noise reduction space is formed between the main fixing frame (1) and the sound-absorbing fixing partition (2), and a pump body (3) is provided in the noise reduction space.

2. The vibration damping and noise reduction mechanism for an air pump as described in claim 1, characterized in that: The main fixing frame (1) and / or the sound-absorbing fixing partition (2) have a semi-enclosed portion.

3. The vibration damping and noise reduction mechanism for an air pump as described in claim 1, characterized in that: The pump body (3) is connected to a bracket (4), which is connected to the main fixed frame (1) and / or the sound-absorbing fixed partition (2) through a vibration damper (5).

4. The vibration damping and noise reduction mechanism for an air pump as described in claim 3, characterized in that: The pump body (3) is located above the bracket (4), and the bracket (4) is connected to the bottom of the main fixing frame (1) and / or the sound-absorbing fixing partition (2).

5. The vibration damping and noise reduction mechanism for an air pump as described in claim 3, characterized in that: One end of the vibration damper (5) is connected to the bracket (4), and the other end of the vibration damper (5) is connected to the main fixed frame (1) or the sound-absorbing fixed partition (2); the vibration damper (5) is provided with a damping part in the middle of the bracket (4) and the main fixed frame (1) or the sound-absorbing fixed partition (2).

6. The vibration damping and noise reduction mechanism for an air pump as described in claim 1, characterized in that: The main fixing frame (1) and / or the silencing fixing partition (2) are provided with a silencing box (6), and the pump body (3) is externally connected to an air pipe (7), which passes through the silencing box (6) and is connected to the air pump.

7. The vibration damping and noise reduction mechanism for an air pump as described in claim 6, characterized in that: The silencer box (6) is located at the end of the air pipe (7) that is connected to the air pump.

8. The vibration damping and noise reduction mechanism for an air pump as described in claim 6, characterized in that: The cross-section of the silencer box (6) along the direction of the trachea (7) is larger at the middle than at both ends.

9. The vibration damping and noise reduction mechanism for an air pump as described in claim 1, characterized in that: The sound-absorbing fixing partition (2) is provided with a wire buckle (8) on the outside.

10. The vibration damping and noise reduction mechanism for an air pump as described in claim 1, characterized in that: The inner side of the sound-absorbing fixed partition (2) is provided with a shock-absorbing pad (9), which is arranged opposite to the air pump.

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