A sound-absorbing and noise-reducing structure for a vacuum cleaner

Abstract

This utility model discloses a sound absorption and noise reduction structure for a vacuum cleaner, including an airflow channel pipe. One end of the airflow channel pipe is snapped into a vacuum cleaner connector. Dust chamber shell one and dust chamber shell two are respectively attached to both sides of the airflow channel pipe. The mating surfaces of dust chamber shell one and dust chamber shell two are snapped into each other, and a handle ring is snapped into the outer side of the dust chamber shell one near the vacuum cleaner connector end, and a limit ring is snapped into the outer side of the dust chamber shell one away from the handle ring end. A dust chamber shell cover is snapped into the top of dust chamber shell one and dust chamber shell two. Heat dissipation holes are opened on the bottom side of each dust chamber shell one and dust chamber shell two, and a motor assembly is fixedly connected inside the corresponding heat dissipation holes. Through the integrated design of airflow channel optimization, vibration isolation, composite noise reduction and efficient heat dissipation, the acoustic performance of the vacuum cleaner is improved while ensuring heat dissipation efficiency and structural reliability, achieving a comprehensive technical effect of low noise and high stability.

Description

Technical Field

[0001] This utility model relates to the field of vacuum cleaner technology, specifically to a sound-absorbing and noise-reducing structure for vacuum cleaners. Background Technology

[0002] Vacuum cleaners use an electric motor to drive a fan to rotate at high speed, creating a partial vacuum inside the dust collection chamber. This creates a pressure difference between the dust collection chamber and the outside of the chamber, generating airflow. Dust is drawn into the dust collection chamber along with the airflow, filtered, and retained inside the chamber, while clean air is discharged. However, the high-speed rotation of the fan generates noise as it moves the air. With the improvement of living standards, noise has become a major issue, so noise reduction structures are needed.

[0003] Currently, traditional vacuum cleaners have many shortcomings in noise control and structural design: airflow channels and motor components mostly adopt a straight-through design, which is prone to generating high-frequency noise due to airflow turbulence and mechanical vibration, while ordinary shells lack targeted noise reduction measures; at the same time, the motor's heat dissipation requirements and noise reduction requirements are contradictory, and traditional heat dissipation structures often amplify noise propagation, making it difficult to balance heat dissipation efficiency and acoustic performance; in addition, the rigid connection of the motor causes vibration to be directly transmitted to the shell, exacerbating structural noise transmission.

[0004] Therefore, a sound-absorbing and noise-reducing structure for vacuum cleaners is proposed to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a sound-absorbing and noise-reducing structure for vacuum cleaners, so as to solve the problem mentioned in the background art that the current traditional vacuum cleaners have a straight airflow channel, rigid connection to the motor and a design that contradicts the relationship between heat dissipation and noise reduction, which makes it difficult to balance high-frequency airflow noise, vibration noise transmission and heat dissipation acoustic performance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sound-absorbing and noise-reducing structure for a vacuum cleaner, comprising an airflow channel pipe, one end of which is snapped into a vacuum cleaner connector, and two dust chamber shells, a first dust chamber shell and a second dust chamber shell, are respectively attached to both sides of the airflow channel pipe.

[0007] The mating surfaces of the dust chamber shell one and the dust chamber shell two are engaged with each other, and a handle ring is engaged with the outer side of the dust collection connector end, while a limit ring is engaged with the outer side of the dust collection connector end.

[0008] The top of the dust chamber shell 1 and the dust chamber shell 2 are engaged with the dust chamber shell cover, and heat dissipation holes are opened on the bottom side of each, and motor components are fixedly connected inside the corresponding heat dissipation holes.

[0009] The motor assembly has a first curved portion and a second curved portion on one side. A heat sink is fixedly connected to one side of the first curved portion and a first end cap is fixedly connected to the other side. A heat sink is fixedly connected to one side of the second curved portion and a second end cap is fixedly connected to the other side.

[0010] The first end cap and the second end cap are symmetrically provided with mounting holes at their upper and lower ends, which are respectively engaged with the second dust chamber shell and the first dust chamber shell.

[0011] Preferably, the mating surfaces of the dust chamber outer shell one and the dust chamber outer shell two adopt a planar labyrinth-type interlocking structure.

[0012] Preferably, the first curved portion and the second curved portion are symmetrically distributed at 180°, and the first curved portion and the second curved portion together define a symmetrical dual airflow channel.

[0013] Preferably, the inner side of the handle ring is provided with an annular groove that matches the dust chamber outer shell one and the dust chamber outer shell two.

[0014] Preferably, the heat sink and heat dissipation fins are made of aluminum alloy and have a sound-absorbing coating on their surface. The heat sink and heat dissipation fins are arranged radially.

[0015] Preferably, a layer of polyester fiber sound-absorbing cotton is pasted on the inner surface of the dust chamber outer shell cover.

[0016] Preferably, the mounting holes of the first end cap and the second end cap are fitted with shock-absorbing rubber rings.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This sound-absorbing and noise-reducing structure for vacuum cleaners, through the integrated design of optimized airflow channels, vibration isolation, composite noise reduction, and efficient heat dissipation, improves the acoustic performance of the vacuum cleaner while ensuring heat dissipation efficiency and structural reliability, achieving a comprehensive technical effect of low noise and high stability. The specific details are as follows:

[0018] 1. Optimized airflow channels for noise reduction

[0019] The dual airflow channel structure is formed by the first and second curved sections symmetrically distributed at 180°. The straight-through design is changed to a detour guide channel, which reduces the high-frequency noise generated by airflow turbulence. At the same time, the symmetrical layout balances the airflow pressure fluctuation and further suppresses the noise source.

[0020] 2. Composite noise reduction structure

[0021] Dust chamber shell 1 and dust chamber shell 2 adopt a planar labyrinthine interlocking surface, which, together with the polyester fiber sound-absorbing cotton layer on the inner surface of the dust chamber shell cover, forms a composite barrier of multiple sound wave reflections and absorptions, blocking the noise propagation path; the heat sink and heat sink fins are coated with a sound-absorbing coating, which takes into account both heat dissipation and sound energy conversion functions, and resolves the contradiction between heat dissipation and noise reduction.

[0022] 3. Vibration isolation design

[0023] The mounting holes of the first and second end caps are inlaid with shock-absorbing rubber rings, which transform the rigid connection between the motor assembly and the housing into an elastic connection, effectively absorbing the vibration energy of the motor and avoiding structural noise transmission; the radially arranged heat dissipation fins work together with the curved part to disperse mechanical vibration and reduce the risk of resonance.

[0024] 4. Modular high-efficiency heat dissipation

[0025] The aluminum alloy heat sink and heat dissipation fins are arranged radially to increase the heat exchange area, and together with the heat dissipation holes, they form a directional airflow circulation, achieving efficient heat dissipation in a limited space. In addition, the sound-absorbing coating suppresses secondary noise from the heat dissipation airflow.

[0026] 5. Improved assembly stability

[0027] The double-ring engagement structure of the handle ring and the limit ring enhances the overall integrity of the housing, while the planar labyrinth-style mating surface and annular groove design reduce vibration and friction noise between components and extend the structural life. Attached Figure Description

[0028] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This utility model Figure 1 A schematic diagram of the exploded structure;

[0030] Figure 3 This is a schematic diagram of the internal structure of the dust bin shell in this utility model;

[0031] Figure 4 This utility model Figure 3 A schematic diagram of the structure viewed from below;

[0032] Figure 5 This is a three-dimensional structural diagram of the first and second curved portions of this utility model.

[0033] In the diagram: 1. Airflow channel pipe; 2. Dust suction connector; 3. Handle ring; 4. Dust chamber outer shell one; 5. Dust chamber outer shell two; 6. Dust chamber outer shell top cover; 7. Limiting ring; 8. Heat dissipation hole; 9. Motor assembly; 10. First bend; 11. Heat sink; 12. First end cover; 13. Second bend; 14. Heat dissipation fins; 15. Second end cover; 16. Mounting hole. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figure 1-5 The present invention provides a technical solution: a sound absorption and noise reduction structure for a vacuum cleaner, including an airflow channel pipe 1, one end of which is connected to a vacuum cleaner connector 2, and dust chamber shell 1 4 and dust chamber shell 2 5 respectively attached to both sides of the airflow channel pipe 1; the mating surfaces of dust chamber shell 1 4 and dust chamber shell 2 5 are connected to each other, and the outer side of the dust chamber shell 1 4 near the vacuum cleaner connector 2 is connected to a handle ring 3, and the outer side of the dust chamber shell 1 4 away from the handle ring 2 is connected to a limit ring 7.

[0036] The airflow channel pipe 1 is connected to the dust suction connector 2 by a snap-fit ​​connection, which facilitates quick disassembly and maintenance, while ensuring airtightness and preventing increased noise caused by airflow leakage; the dust chamber shell 1 4 and the dust chamber shell 2 5 are connected by a snap-fit ​​connection through the mating surface, and combined with the ring constraint of the handle ring 3 and the limiting ring 7, a stable closed structure is formed, which effectively enhances the overall rigidity and reduces additional noise caused by shell vibration.

[0037] The top of the dust chamber outer shell 4 and the dust chamber outer shell 5 are engaged together to form a dust chamber outer shell cover 6. The bottom side is provided with heat dissipation holes 8 and a motor assembly 9 is fixedly connected inside the corresponding heat dissipation holes 8.

[0038] The snap-fit ​​connection of the dust chamber outer shell cover 6 enhances the overall structural stability and effectively suppresses structural noise caused by vibration; the reasonable layout of the heat dissipation holes 8 not only ensures the necessary heat dissipation requirements, but also avoids airflow resonance through precise hole diameter design, further reducing the noise level.

[0039] The motor assembly 9 has a first curved part 10 and a second curved part 13 on one side. A heat sink 11 is fixedly connected to one side of the first curved part 10 and a first end cover 12 is fixedly connected to the other side. A heat sink fin 14 is fixedly connected to one side of the second curved part 13 and a second end cover 15 is fixedly connected to the other side.

[0040] The symmetrical arrangement of the first curved section 10 and the second curved section 13 forms a dual airflow channel structure, making the airflow more stable and orderly. This design effectively reduces airflow turbulence and eddy currents, and reduces high-frequency noise caused by airflow disturbance. At the same time, the streamlined design of the curved section reduces airflow resistance and improves dust collection efficiency.

[0041] The first end cap 12 and the second end cap 15 are symmetrically provided with mounting holes 16 at their upper and lower ends, which are respectively engaged with the dust chamber outer shell 2 5 and the dust chamber outer shell 1 4.

[0042] The first end cap 12 and the second end cap 15 are connected to the dust chamber shell 1 4 and the dust chamber shell 2 5 through symmetrically arranged mounting holes 16. This symmetrical design ensures the stability of the connection and uniform force distribution, effectively prevents the connection from loosening due to vibration, and improves the reliability of the overall structure.

[0043] The mating surfaces of dust chamber outer shell 1 4 and dust chamber outer shell 2 5 adopt a planar labyrinth-type interlocking structure;

[0044] The planar labyrinthine interlocking structure adopted by the dust chamber shell 1 4 and the dust chamber shell 2 5 forms a complex sound wave reflection path through the design of multiple tortuous joint surfaces, effectively blocking the transmission of internal noise to the outside.

[0045] The first curved portion 10 and the second curved portion 13 are symmetrically distributed at 180°, and the first curved portion 10 and the second curved portion 13 together define a symmetrical dual airflow channel.

[0046] The symmetrical dual-channel structure allows airflow pressure fluctuations to cancel each other out, effectively suppressing structural resonance caused by airflow pulsation.

[0047] The inner side of the handle ring 3 is provided with an annular groove that matches the dust chamber outer shell 4 and the dust chamber outer shell 5.

[0048] The annular groove on the inner side of the handle ring 3 is made by precision injection molding, forming a millimeter-level precision fit with the dust chamber outer shell 1 4 and the dust chamber outer shell 2 5; moreover, a special elastic sealing strip is integrated inside the groove to form a double sound insulation barrier.

[0049] The heat sink 11 and heat dissipation fins 14 are made of aluminum alloy and their surfaces are coated with a sound-absorbing coating. The heat sink 11 and heat dissipation fins 14 are arranged radially.

[0050] The use of aluminum alloy with high thermal conductivity improves the heat dissipation efficiency of heat sink 11 and heat dissipation fins 14; the surface coating of nano-level sound-absorbing coating can absorb wide-band noise.

[0051] The inner surface of the dust chamber outer cover 6 is covered with a layer of polyester fiber sound-absorbing cotton.

[0052] The polyester fiber sound-absorbing cotton layer adopts a gradient density design, which achieves efficient absorption of broadband noise through a layered structure of different densities;

[0053] The mounting holes 16 of the first end cap 12 and the second end cap 15 are fitted with shock-absorbing rubber rings.

[0054] The shock-absorbing rubber ring embedded in the mounting hole 16 is made of high-damping elastic material, which can effectively attenuate the vibration energy transmitted from the motor to the housing.

[0055] Working principle: Before using this type of sound-absorbing and noise-reducing structure for vacuum cleaners, it is necessary to check the overall condition of the device to ensure it can function properly. Figure 1 - Figure 5 As shown, the airflow channel pipe 1 is connected to the dust suction connector 2, and the sucked-in airflow enters the dust chamber to store dust and other debris in a designated location. When the motor assembly 9 is running, the airflow passes through a 180° symmetrical dual airflow channel formed by the first bend 10 and the second bend 13, causing the airflow direction to change in a detour, avoiding turbulence noise caused by a straight-through structure. The symmetrical design can balance airflow pressure fluctuations and reduce vibration and howling caused by airflow impact;

[0056] Secondly, the dust chamber outer shell 4 and the dust chamber outer shell 5 are connected by a planar labyrinth-type interlocking structure, which effectively blocks the direct propagation path of sound waves and reduces noise leakage. The handle ring 3 and the limiting ring 7 are respectively interlocked at both ends of the dust chamber outer shell, which enhances the overall structural sealing and prevents noise from escaping from the seams.

[0057] Meanwhile, a layer of polyester fiber sound-absorbing cotton is pasted on the inner surface of the dust bin outer shell cover 6, which can absorb high-frequency noise, reduce sound wave reflection, and further optimize the noise reduction effect; the first end cover 12 and the second end cover 15 are connected to the dust bin outer shell through the mounting hole 16, and the mounting hole is embedded with a shock-absorbing rubber ring, which can effectively absorb motor vibration, prevent mechanical vibration from being directly transmitted to the outer shell, and reduce structural noise transmission.

[0058] Finally, the heat sink 11 and heat sink 14 are made of aluminum alloy and coated with a sound-absorbing coating. While ensuring efficient heat dissipation, the material damping characteristics are used to suppress vibration noise. Their radial arrangement design can optimize airflow distribution and avoid generating additional noise from the heat dissipation airflow. The heat dissipation holes 8 are located at the bottom of the dust chamber shell. Together with the heat dissipation structure of the motor assembly, they form a directional airflow circulation, ensuring heat dissipation efficiency while avoiding mutual interference between the hot airflow and the main suction airflow.

[0059] Therefore, this utility model achieves low noise performance of the vacuum cleaner during efficient operation through multiple technical means, including airflow channel optimization (double bending section design), application of acoustic materials (sound-absorbing cotton, sound-absorbing coating), vibration isolation (vibration-damping rubber ring), and integrated heat dissipation and noise reduction (heat sink and sound-absorbing coating).

[0060] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sound absorbing and noise reducing structure for a vacuum cleaner, comprising an airflow passage tube (1), characterized in that: One end of the airflow channel pipe (1) is connected to a dust suction connector (2), and the two sides of the airflow channel pipe (1) are respectively attached to a dust chamber shell one (4) and a dust chamber shell two (5). The mating surfaces of the dust chamber shell 1 (4) and the dust chamber shell 2 (5) are engaged with each other, and the outer side of the dust chamber shell 1 (4) near the dust suction connector (2) is engaged with the handle ring (3), and the outer side of the dust chamber shell 2 (5) away from the handle ring (3) is engaged with the limit ring (7). The top of the dust chamber shell 1 (4) and the dust chamber shell 2 (5) are engaged with the dust chamber shell cover (6), and the bottom side is provided with heat dissipation holes (8) and a motor assembly (9) is fixedly connected inside the corresponding heat dissipation holes (8). The motor assembly (9) has a first curved part (10) and a second curved part (13) on one side. A heat sink (11) is fixedly connected to one side of the first curved part (10) and a first end cap (12) is fixedly connected to the other side. A heat sink (14) is fixedly connected to one side of the second curved part (13) and a second end cap (15) is fixedly connected to the other side. The first end cap (12) and the second end cap (15) are symmetrically provided with mounting holes (16) at their upper and lower ends, which are respectively engaged with the dust chamber shell 2 (5) and the dust chamber shell 1 (4).

2. The sound absorption and noise reduction structure for a dust collector according to claim 1, characterized in that: The mating surfaces of the dust chamber shell 1 (4) and the dust chamber shell 2 (5) adopt a planar labyrinth interlocking structure.

3. The sound absorbing and noise reducing structure for a vacuum cleaner according to claim 1, characterized in that: The first curved portion (10) and the second curved portion (13) are symmetrically distributed at 180°, and the first curved portion (10) and the second curved portion (13) together define a symmetrical dual airflow channel.

4. The sound absorbing and noise reducing structure for a vacuum cleaner according to claim 1, characterized in that: The inner side of the handle ring (3) is provided with an annular groove that matches the dust chamber outer shell one (4) and the dust chamber outer shell two (5).

5. The sound absorbing and noise reducing structure for a vacuum cleaner according to claim 1, characterized in that: The heat sink (11) and heat dissipation fins (14) are made of aluminum alloy and are coated with a sound-absorbing coating. The heat sink (11) and heat dissipation fins (14) are arranged radially.

6. The sound absorbing and noise reducing structure for a vacuum cleaner according to claim 1, characterized in that: The inner surface of the dust chamber outer shell cover (6) is covered with a layer of polyester fiber sound-absorbing cotton.

7. The sound absorbing and noise reducing structure for a vacuum cleaner according to claim 1, wherein: The mounting holes (16) of the first end cap (12) and the second end cap (15) are fitted with shock-absorbing rubber rings.

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