Integrated stove noise reduction type air duct structure

Abstract

The utility model discloses a kind of integrated cooker noise reduction type air duct structure, it is related to integrated cooker technical field, to solve the problem of resonance and big noise of existing air duct due to rigid connection and contact with cabinet body easily caused.This utility model includes air duct assembly, air duct inner tube outer side is fixedly connected with sound-absorbing cotton layer, sound-absorbing cotton layer outer side is fixedly connected with air duct outer tube, air duct outer tube both ends are fixedly connected with the connecting plate for connecting air duct assembly with fan mouth and external flue, air duct outer tube both ends are fixedly connected with two groups of buffer assembly for connecting air duct outer tube and integrated cooker internal structure.This technical scheme is suspended in integrated cooker inside by setting the buffer assembly of air duct outer tube both ends, avoid air duct and stove body inner wall rigid contact, thereby absorbing vibration by buffer assembly, prevent resonance and reduce secondary noise transmitted to cabinet, can effectively reduce the vibration and airflow noise of air duct system operation.

Description

Technical Field

[0001] This utility model relates to the field of integrated stove technology, and in particular to a noise-reducing air duct structure for integrated stoves. Background Technology

[0002] Integrated cooktops, as kitchen appliances that combine the functions of a range hood, cooktop, and disinfection cabinet, have one of their core performance characteristics being the efficiency of oil fume extraction. The duct system, as a crucial channel for oil fume delivery, directly impacts the extraction effect and user experience through its design. With consumers increasingly demanding quieter kitchens, the noise problem of traditional integrated cooktop ducts is becoming increasingly prominent.

[0003] Most existing integrated cooktops have their internal air ducts directly integrated and embedded inside the cooktop body. The air ducts are rigidly connected to the cooktop cabinet (e.g., directly fixed with screws), and the outer surface of the air duct is in direct contact with the inner wall of the cooktop. In actual use, when the vibration frequency of the fan and the airflow disturbance frequency are close to the natural frequency of the air duct, resonance will occur. Resonance will intensify the overall vibration of the air duct, amplifying what was originally a small noise into a low-pitched "humming" sound. In severe cases, it may even cause the cabinets and walls to vibrate, leading to uncontrolled vibration transmission.

[0004] Therefore, it is necessary to invent a noise-reducing air duct structure for integrated stoves to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a noise-reducing air duct structure for integrated stoves, in order to solve the problem that existing integrated stove air ducts are prone to resonance and high noise due to rigid connection and direct contact with the inner wall.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An integrated stove noise reduction duct structure includes a duct assembly. The duct assembly includes an inner duct tube, a sound-absorbing cotton layer fixedly connected to the outside of the inner duct tube, an outer duct tube fixedly connected to the outside of the sound-absorbing cotton layer, and connecting plates fixedly connected to both ends of the outer duct tube. The connecting plates are used to connect the duct assembly to the fan outlet and the external flue. Two sets of buffer components for connecting the outer duct tube to the internal structure of the integrated stove are fixedly connected to both ends of the outer duct tube.

[0007] This technical solution uses buffer components at both ends of the outer duct to elastically support the entire duct assembly within the integrated stove, placing it in a "suspended" state. This avoids a rigid connection and direct contact between the duct and the integrated stove cabinet, structurally cutting off the main path of vibration transmission. The buffer components absorb and attenuate the vibrations generated by the duct assembly itself, effectively preventing resonance caused by the coupling of the duct vibration frequency and the cabinet's natural frequency. This significantly reduces structural noise transmitted due to resonance amplification and secondary vibration of the cabinet. By directly covering the outer side of the inner duct with a sound-absorbing cotton layer and adding an outer duct, the sound-absorbing cotton layer effectively absorbs airflow noise propagating inside the duct (sound absorption). Simultaneously, the outer duct and the sound-absorbing cotton layer together form a sound insulation structure, blocking internal noise radiation outward (sound insulation), effectively suppressing airborne noise. Connecting plates are used to connect the duct assembly to the fan outlet and external flue, and standardized connection methods (such as screw fixing) ensure tight sealing at the connections, preventing oil fume leakage and sound leakage from gaps, while also facilitating production assembly and on-site installation.

[0008] As a further description of the above technical solution: the buffer assembly includes two silicone buffer pads that are respectively fixedly connected to the outer pipe of the air duct and the inner wall of the integrated stove. A fixing block is fixedly connected to the silicone buffer pad, and a spherical groove is formed on the fixing block.

[0009] As a further description of the above technical solution: the buffer assembly also includes spherical connecting blocks that are slidably disposed in two spherical grooves, and an outer tube and a sliding inner rod connected by springs are fixedly connected to the two spherical connecting blocks respectively.

[0010] As a further description of the above technical solution: the outer sleeve is slidably sleeved on the outside of the sliding inner rod, and a damper is provided between the outer sleeve and the sliding inner rod.

[0011] As a further description of the above technical solution: the size of the spherical connecting block matches the size of the spherical groove, and both the surface of the spherical connecting block and the spherical groove are coated with a smooth and quiet Teflon coating.

[0012] As a further description of the above technical solution: the air duct assembly also includes a spiral guide plate fixedly connected to the inner tube of the air duct, the pitch of the spiral guide plate being 1.5-2 times the diameter of the air duct.

[0013] As a further description of the above technical solution: a sealing gasket is fixedly connected to the connecting plate, and multiple connecting screw holes are also provided on the surface of the connecting plate.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. This utility model, by incorporating a buffer component, allows the internal air duct of the integrated stove to be suspended within the stove's interior during actual use, avoiding large-area contact with the stove's inner wall. During operation, the buffer component absorbs vibrations from the internal air duct, preventing resonance and significantly reducing noise generated by secondary vibrations of the cabinet.

[0015] 2. This utility model has a spiral guide plate and a sound-absorbing cotton layer installed on the inner tube of the air duct. In actual use, the airflow can be guided into the air duct in a spiral laminar flow state by the spiral guide plate, which reduces the turbulence intensity and prevents the oil fume airflow from forming eddies and turbulence at high speed through the inner tube of the air duct during stir-frying, thereby reducing the generation of high-frequency noise and further reducing the noise of the air duct. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the air duct component structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the buffer component structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the spherical connecting block structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the spherical groove structure of this utility model.

[0021] Legend: 1. Duct assembly; 11. Inner duct tube; 12. Spiral guide plate; 13. Sound-absorbing cotton layer; 14. Outer duct tube; 2. Connecting plate; 21. Sealing gasket; 22. Connecting screw hole; 3. Buffer assembly; 31. Silicone buffer pad; 32. Fixing block; 33. Spherical groove; 34. Outer tube; 35. Sliding inner rod; 36. Spherical connecting block. Detailed Implementation

[0022] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5This utility model provides a technical solution: a noise-reducing air duct structure for an integrated stove, comprising an air duct assembly 1. The air duct assembly 1 includes an inner air duct 11, a sound-absorbing cotton layer 13 fixedly connected to the outside of the inner air duct 11, and an outer air duct 14 fixedly connected to the outside of the sound-absorbing cotton layer. The air duct assembly 1 also includes a spiral guide plate 12 fixedly connected to the inner air duct 11, the pitch of which is 1.5-2 times the diameter of the air duct. Connecting plates 2 are fixedly connected to both ends of the outer air duct 14, connecting the air duct assembly 1 to the fan outlet and the external flue. Sealing gaskets 21 are fixedly connected to the connecting plates 2, and multiple connecting screw holes 22 are also provided on the surface of the connecting plates 2. Two sets of buffer components 3 for connecting the outer air duct 14 to the internal structure of the integrated stove are fixedly connected to both ends of the outer air duct 14.

[0024] Therefore, when installing the air duct structure, the operator connects and fixes the air duct assembly 1 to the fan port and the flue smoke inlet through the connecting screw holes 22 on the connecting plate 2, and seals the connection with the sealing gasket 21 to prevent oil fumes from leaking into the integrated stove and to prevent noise caused by gaps.

[0025] Specifically, such as Figures 3-5 As shown, the buffer assembly 3 includes two silicone buffer pads 31 fixedly connected to the outer duct 14 and the inner wall of the integrated stove, respectively. A fixing block 32 is fixedly connected to each silicone buffer pad 31, and a spherical groove 33 is formed on the fixing block 32. The buffer assembly 3 also includes spherical connecting blocks 36 slidably disposed within the two spherical grooves 33. An outer sleeve 34 and a sliding inner rod 35, connected by springs, are fixedly connected to each of the two spherical connecting blocks 36. The outer sleeve 34 is slidably fitted onto the outside of the sliding inner rod 35, and a damper is provided between the outer sleeve 34 and the sliding inner rod 35. The size of the spherical connecting block 36 matches the size of the spherical groove 33, and both the spherical connecting block 36 and the spherical groove 33 are coated with a smooth and quiet Teflon coating.

[0026] Therefore, in actual use, the air duct inside the integrated stove is suspended inside the stove by the buffer component 3, avoiding large-area contact with the inner wall of the integrated stove. When the integrated stove is working, the fumes are drawn into the air duct by the fan, impacting the inner wall of the inner duct 11, causing vibration of the inner duct 11 and the outer duct 14. The sound-absorbing cotton layer 13 can absorb some of the noise generated by the vibration. The vibration is buffered for the first time by the silicone buffer pad 31, then transmitted to the sliding inner rod 35 and the outer sleeve 34 by the spherical connecting block 36, and then buffered for the second time by the damper. Finally, it is buffered for the third time by the silicone buffer pad 31 on the integrated stove, thereby effectively absorbing most of the vibration, avoiding resonance, and significantly reducing the noise generated by the secondary vibration of the cabinet. After the fumes enter the inner tube 11 of the duct, they are guided by the spiral guide plate 12 to enter the duct in a spiral laminar flow state, reducing the turbulence intensity and preventing the fumes from forming eddies and turbulence at high speed through the inner tube 11 during stir-frying. This reduces the generation of high-frequency noise and further reduces the noise of the duct.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A noise-reducing air duct structure for an integrated stove, characterized in that: The system includes a duct assembly (1), which includes an inner duct tube (11). A sound-absorbing cotton layer (13) is fixedly connected to the outside of the inner duct tube (11). An outer duct tube (14) is fixedly connected to the outside of the sound-absorbing cotton layer. Both ends of the outer duct tube (14) are fixedly connected to a connecting plate (2) for connecting the duct assembly (1) to the fan outlet and the external flue. Both ends of the outer duct tube (14) are fixedly connected to two sets of buffer components (3) for connecting the outer duct tube (14) to the internal structure of the integrated stove.

2. The noise-reducing air duct structure for an integrated stove according to claim 1, characterized in that: The buffer assembly (3) includes two silicone buffer pads (31) that are fixedly connected to the outer pipe (14) of the air duct and the inner wall of the integrated stove, respectively. A fixing block (32) is fixedly connected to the silicone buffer pad (31), and a spherical groove (33) is opened on the fixing block (32).

3. The noise-reducing air duct structure for an integrated stove according to claim 2, characterized in that: The buffer assembly (3) further includes spherical connecting blocks (36) that are slidably disposed in two spherical grooves (33), and an outer sleeve (34) and a sliding inner rod (35) that are connected by springs are fixedly connected to the two spherical connecting blocks (36).

4. The noise-reducing air duct structure for an integrated stove according to claim 3, characterized in that: The outer sleeve (34) is slidably sleeved on the outside of the sliding inner rod (35), and a damper is provided between the outer sleeve (34) and the sliding inner rod (35).

5. The noise-reducing air duct structure for an integrated stove according to claim 4, characterized in that: The size of the spherical connecting block (36) matches the size of the spherical groove (33), and both the spherical connecting block (36) and the spherical groove (33) are coated with a smooth and quiet Teflon coating.

6. The noise-reducing air duct structure for an integrated stove according to claim 5, characterized in that: The air duct assembly (1) also includes a spiral guide plate (12) fixedly connected to the inner tube (11) of the air duct, wherein the pitch of the spiral guide plate (12) is 1.5-2 times the diameter of the air duct.

7. The noise-reducing air duct structure for an integrated stove according to claim 6, characterized in that: A sealing gasket (21) is fixedly connected to the connecting plate (2), and a plurality of connecting screw holes (22) are also provided on the surface of the connecting plate (2).

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