A silencer for an atomiser

Abstract

The utility model discloses a kind of muffler of atomizer.It includes air intake muffler box, first shell interior is equipped with the flow channel separated by baffle and mutually intercommunicate, straight-through flow channel is formed to the rear flow through between first baffle and first right side plate;The rear end of straight-through flow channel is blocked by the front side of second baffle and opposite left rear side of first baffle forms the turning flow channel of left front direction;First buffer cavity is formed between the right side of third baffle and the left side of second baffle, horizontal flow channel is formed between bending section and first rear side plate, vertical flow channel is formed between third baffle and first left side plate and communicated with air outlet;Air current enters from air inlet and sequentially passes through straight-through flow channel, turning flow channel, first buffer cavity, horizontal flow channel, vertical flow channel and air outlet to form air intake muffling circuit.Advantages are: outlet and inlet are completely independent, effectively isolate mutual interference in the process of air inlet and outlet flow, eliminate resonance phenomenon, enhance the sound attenuation effect of structure.

Description

Technical Field

[0001] This utility model relates to a noise reduction device for a medical nebulizer, and more particularly to a noise reduction device for a nebulizer. Background Technology

[0002] Nebulizers, as common medical devices, atomize air or medication using an air pump or compressor to generate a continuous airflow for users to inhale. However, due to the high airflow velocity and frequent flow channel switching, nebulizers often generate significant noise during operation, affecting user comfort and environmental quietness. Therefore, silencing devices are typically installed inside nebulizers to reduce noise levels. However, existing nebulizer silencing devices have several structural design shortcomings, resulting in unsatisfactory silencing effects. First, in current technology, the inlet and outlet silencing chambers are usually located adjacent to each other, with the inlet and outlet channels close together, easily generating a resonance effect during operation, thus amplifying some noise. Second, the inlet and outlet paths are mostly straight-line structures, lacking effective flow channel variations and buffer spaces, resulting in insufficient airflow deflection and diffusion, reducing overall silencing efficiency. Furthermore, some products fail to balance airflow velocity and pressure loss in their airway diameter settings, causing the silencing device to introduce significant airflow resistance while reducing noise, thus affecting nebulization efficiency. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a silencing device for an atomizer that features inlet and outlet air isolation, multi-stage flow channel design, and significantly improved silencing effect.

[0004] To solve the above-mentioned technical problems, the silencing device of the atomizer of this utility model includes a silencing device, which includes an air inlet silencing box. The air inlet silencing box includes a square first shell and a first cover plate for sealing the first shell. The first shell includes a first front side plate, a first rear side plate, a first left side plate, and a first right side plate. The left and right sides of the first front side plate are respectively provided with an air outlet and an air inlet. The interior of the first shell is provided with flow channels that are separated by baffles and are interconnected. A first baffle extending to the right rear is connected to the first front side plate, and a straight flow channel for rearward flow is formed between the first baffle and the first right side plate. The first right side plate is connected to... A second baffle is connected, the front side of which blocks the rear end of the straight flow channel and forms a left-front turning flow channel opposite to the left rear side of the first baffle; a third baffle is connected to the middle of the first front side plate, the third baffle extends backward and bends to the right to form a bending section, a first buffer cavity is formed between the right side of the third baffle and the left side of the second baffle, a horizontal flow channel is formed between the bending section and the first rear side plate, and a vertical flow channel communicating with the air outlet is formed between the third baffle and the first left side plate; the airflow enters from the air inlet and passes through the straight flow channel, the turning flow channel, the first buffer cavity, the horizontal flow channel, the vertical flow channel and the air outlet in sequence to form an intake silencer circuit.

[0005] The vertical flow channel is provided with a fourth baffle connected to the first left side plate, and a narrow section is formed between the fourth baffle and the third baffle.

[0006] The silencing device further includes an exhaust silencing box, which includes a square second housing and a second cover plate sealing the top of the second housing. The second housing includes a second front side plate, a second rear side plate, a second left side plate, and a second right side plate. The left and right sides of the second front side plate are respectively provided with a second air inlet and a second air outlet. A partition block is provided inside the second housing. A left flow channel is formed between the partition block and the second left side plate, a right flow channel is formed between the partition block and the second right side plate, and a rear flow channel is formed between the partition block and the second rear side plate. The left side of the partition block is provided with multiple raised and vertical grid bars along the curved direction.

[0007] The left flow channel is provided with a raised buffer block connected to the second left side plate.

[0008] The first front side plate, the first rear side plate, the first left side plate, the first right side plate, the first baffle, the second baffle, and the third baffle are integrally formed.

[0009] The second front side panel, the second rear side panel, the second left side panel, and the second right side panel are integrally formed with the partition block.

[0010] The straight flow channel, the turning flow channel, the first buffer chamber, the horizontal flow channel, and the vertical flow channel are connected by a curved transition.

[0011] The outer edges of both the first and second housings are provided with a number of ear plates for installation.

[0012] The first housing and the second housing are fixedly connected by fasteners inserted into the ear plates.

[0013] Advantages of this utility model:

[0014] (1) The straight flow channel can guide the airflow to transition naturally along the first baffle, avoid straight impact on the inner wall, and reduce initial turbulence and noise;

[0015] (2) After passing through the straight channel, the airflow is forced to turn and form a turning channel under the action of the second baffle, which can cause the airflow to change direction at this point and effectively disrupt the continuous propagation path of high-frequency noise.

[0016] (3) The volume of the first buffer chamber is larger than that of the upstream and downstream channels. When the airflow enters the first buffer chamber, it can buffer the pressure fluctuations here, so that the airflow can achieve the effect of slowing down and reducing pressure in advance before entering the next section.

[0017] (4) The horizontal flow channel extends the overall noise reduction path and improves energy dissipation. The vertical flow channel effectively avoids backflow disturbances caused by airflow rebound, ensuring the stability of the overall flow direction and further reducing high-frequency noise.

[0018] (5) The narrow flow channel restricts the airflow through the cross section, causing it to be compressed and generating local turbulence, thereby effectively absorbing residual high-frequency noise;

[0019] (6) The exhaust silencer box is equipped with a partition block that divides the internal space into a left flow channel and a right flow channel, and is also equipped with a buffer block and vertical grid bars, which can disturb the airflow again and dissipate the eddy current to achieve secondary silencer;

[0020] (7) The inlet and outlet of the air intake silencer box and the air exhaust silencer box are completely independent, effectively isolating the mutual interference during the air intake and exhaust flow process, eliminating resonance phenomenon, and enhancing the sound absorption effect of the structure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the internal structure of the air intake silencer box in the atomizer silencer device of this utility model;

[0022] Figure 2 This is a side view structural diagram of the air intake silencer box in the atomizer silencer device of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the cover plate in the air intake silencer box of the atomizer silencer device of this utility model;

[0024] Figure 4 This is a schematic diagram of the overall structure of the air intake silencer box in the atomizer silencer device of this utility model;

[0025] Figure 5 This is a schematic diagram of the overall structure of the exhaust silencer box in the atomizer silencer device of this utility model;

[0026] Figure 6 This is a schematic diagram of the internal structure of the exhaust silencer box in the atomizer silencer device of this utility model. Detailed Implementation

[0027] The silencing device of the atomizer of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0028] The atomizer silencing device includes an air intake silencing box 1, which includes a first housing 2 and a first cover plate 3 for sealing the first housing 2. The first housing 2 includes a first front side plate 6, a first rear side plate 7, a first left side plate 8, and a first right side plate 9. The left and right sides of the first front side plate 6 are respectively provided with an air outlet 5 and an air inlet 4. The interior of the first housing 2 is provided with flow channels that are separated by baffles and are interconnected. A first baffle 10 extending to the right rear is connected to the first front side plate 6. The first baffle 10 and the first rear side plate 9 are connected to the first front side plate 6. A straight flow channel 13 is formed between the right side plates 9, allowing rearward flow. The first baffle 10 has a closed, arc-shaped inclined structure. A second baffle 11 is connected to the first right side plate 9. The second baffle 11 has a herringbone structure. The front side of the second baffle 11 blocks the rear end of the straight flow channel 13 and forms a left-front turning flow channel 14 opposite to the left rear side of the first baffle 10. A third baffle 12 is connected to the middle of the first front side plate 6. The third baffle 12 has an L-shaped structure and extends rearward and bends to the right to form a... A first buffer chamber 15 is formed between the right side of the third baffle 12 and the left side of the second baffle 11 in the bending section 16; a horizontal flow channel 17 is formed between the bending section 16 and the first rear side plate 7; and a vertical flow channel 18 communicating with the air outlet 5 is formed between the third baffle 12 and the first left side plate 8. The straight flow channel 13, the turning flow channel 14, the first buffer chamber 15, the horizontal flow channel 17, and the vertical flow channel 18 are connected by a curved transition. The airflow enters from the air inlet 4 and passes through the straight flow channel 13 and the turning flow channel 14 in sequence. The air intake silencing circuit is formed by the air passage 14, the first buffer chamber 15, the horizontal flow passage 17, the vertical flow passage 18 and the air outlet 5; the vertical flow passage 18 is provided with a fourth baffle 19 connected to the first left side plate 8. The fourth baffle 19 has an upward convex curved arc structure, and a narrow section 20 is formed between the fourth baffle 19 and the third baffle 12; the first front side plate 6, the first rear side plate 7, the first left side plate 8, the first right side plate 9 and the first baffle 10, the second baffle 11 and the third baffle 12 are integrally formed structures.

[0029] The exhaust silencer box 21 includes a square second housing 22 and a second cover plate 23 sealing the top of the second housing 22. The second housing 22 includes a second front side plate, a second rear side plate, a second left side plate, and a second right side plate. The left and right sides of the second front side plate are respectively provided with a second air inlet 30 and a second air outlet 31. The second housing 22 is provided with a partition block 24 inside. The rear side of the partition block 24 is recessed. A left flow channel 26 is formed between the partition block 24 and the second left side plate. A right flow channel 27 is formed between the partition block 24 and the second right side plate. A rear flow channel 28 is formed between the partition block 24 and the second rear side plate. The left side of the partition block 24 is provided with multiple raised and vertical grid bars 29 along the curved direction. A raised buffer block 25 connected to the second left side plate is provided in the left flow channel 26. The second front side plate, the second rear side plate, the second left side plate, and the second right side plate are integrally formed with the partition block 24.

[0030] The outer edges of the first housing 2 and the second housing 22 are provided with a number of ear plates for installation. The first housing 2 and the second housing 22 are fixedly connected by fasteners inserted into the ear plates.

Claims

1. A silencing device for an atomizer, characterized in that: The device includes a silencing device, which includes an air intake silencing box (1). The air intake silencing box (1) includes a square first housing (2) and a first cover plate (3) for closing the first housing (2). The first housing (2) includes a first front side plate (6), a first rear side plate (7), a first left side plate (8), and a first right side plate (9). The left and right sides of the first front side plate (6) are respectively provided with an air outlet (5) and an air inlet (4). The first housing (2) has flow channels that are separated by baffles and are interconnected. The first front side plate (6) is connected to a first baffle (10) extending to the right rear. The first baffle (10) and the first right side plate (9) form a straight flow channel (13) that flows backward. The first right side plate (9) is connected to a second baffle (11). The front side of the second baffle (11) blocks the straight flow. The rear end of the channel (13) and the left rear side of the first baffle (10) form a left-front turning flow channel (14); the middle of the first front side plate (6) is connected to a third baffle (12), the third baffle (12) extends backward and bends to the right to form a bending section (16), the right side of the third baffle (12) and the left side of the second baffle (11) form a first buffer cavity (15), the bending section (16) and the first rear side plate (7) form a horizontal flow channel (17), the third baffle (12) and the first left side plate (8) form a vertical flow channel (18) communicating with the air outlet (5); the airflow enters from the air inlet (4) and passes through the straight flow channel (13), the turning flow channel (14), the first buffer cavity (15), the horizontal flow channel (17), the vertical flow channel (18) and the air outlet (5) in sequence to form an air intake silencer circuit.

2. The atomizer silencer according to claim 1, characterized in that: The vertical flow channel (18) is provided with a fourth baffle (19) connected to the first left side plate (8), and a narrow section (20) is formed between the fourth baffle (19) and the third baffle (12).

3. The atomizer silencer according to claim 1, characterized in that: The silencing device also includes an exhaust silencing box (21), which includes a square second housing (22) and a second cover plate (23) sealed on the top of the second housing (22). The second housing (22) includes a second front side plate, a second rear side plate, a second left side plate and a second right side plate. The left and right sides of the second front side plate are respectively provided with a second air inlet (30) and a second air outlet (31). The second housing (22) is provided with a partition block (24). The partition block (24) and the second left side plate form a left flow channel (26). The partition block (24) and the second right side plate form a right flow channel (27). The partition block (24) and the second rear side plate form a rear flow channel (28). The left side of the partition block (24) is provided with multiple raised and vertical grid bars (29) along the curved direction.

4. The atomizer silencer according to claim 3, characterized in that: The left flow channel (26) is provided with a raised buffer block (25) connected to the second left side plate.

5. The atomizer silencer according to claim 1, characterized in that: The first front side plate (6), the first rear side plate (7), the first left side plate (8), the first right side plate (9), the first baffle (10), the second baffle (11), and the third baffle (12) are integrally formed structures.

6. The atomizer silencer according to claim 4, characterized in that: The second front side plate, the second rear side plate, the second left side plate, the second right side plate, and the partition block (24) are integrally formed.

7. The atomizer silencer according to claim 1, characterized in that: The straight flow channel (13), the turning flow channel (14), the first buffer chamber (15), the horizontal flow channel (17), and the vertical flow channel (18) are connected by a curved transition.

8. The atomizer silencer according to claim 3, characterized in that: The outer edges of the first housing (2) and the second housing (22) are provided with a number of ear plates for installation.

9. The atomizer silencer according to claim 3, characterized in that: The first housing (2) and the second housing (22) are fixedly connected by fasteners inserted into the ear plate.

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