Silent air cabinet for range hood

Abstract

A kind of mute wind cabinet for range hood, it includes volute, and the fume collecting cover covered in volute, the fume collecting cover outside installation has silencer cover, the silencer cover includes front plate and the side plate located at the both sides of front plate, the front plate and both sides plate cover the front and both sides of fume collecting cover in it, the side plate is provided with adjusting groove above, correspondingly, the both sides of fume collecting cover are provided with mounting hole, adjusting screw passes through the adjusting groove and is connected with mounting hole, silencer cover is adjustably connected with fume collecting cover as a whole;The sound insulation cavity is formed between the silencer cover and fume collecting cover, and the sound insulation layer is filled in sound insulation cavity.The beneficial effects of the utility model are: setting silencer cover outside fume collecting cover, and forming sound insulation cavity between the both and filling sound insulation layer, effectively absorbing, attenuating noise, reducing working noise.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, specifically a silent fan cabinet for a range hood. Background Technology

[0002] Range hoods use a fan system to promptly draw in and expel cooking fumes, maintaining a clean and healthy kitchen environment, thus becoming an indispensable household appliance in modern kitchens. Traditional range hoods, however, generate significant noise during high-speed operation due to airflow friction and vibration between the impeller and the casing, as well as the motor itself. This high-decibel noise not only affects the kitchen experience but can also interfere with daily conversations and rest, and prolonged exposure to high noise levels may have adverse health effects. Although some range hoods reduce operating noise by optimizing the duct structure or using silent motors, the results are not ideal and the cost is high.

[0003] Secondly, the exterior design of existing range hoods is usually highly integrated with their internal structure, resulting in a relatively fixed style. Once production is complete, it is difficult to add a dedicated sound insulation structure to the exterior. Even if a dedicated sound insulation structure can be added externally, the structure is complex and mostly fixed connections. Professional personnel are required to disassemble and reassemble the range hood during cleaning and maintenance, increasing usage costs and inconvenience, and limiting the flexibility of use. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a silent fan cabinet for range hoods that is simple in structure, low in manufacturing cost, has a multi-layer silent structure that significantly reduces noise, ensures ideal silent effect, has high structural strength, stable connection, long service life, and is easy for users to disassemble and install for daily maintenance and cleaning.

[0005] The purpose of this utility model is achieved in the following way: a silent fan cabinet for a range hood, comprising a volute and a smoke collection hood covering the volute. A silencer is installed outside the smoke collection hood. The silencer includes a front plate and side plates located on both sides of the front plate. The front plate and the side plates cover the front and sides of the smoke collection hood. An adjustment groove is provided above the side plates. Correspondingly, mounting holes are provided on both sides of the smoke collection hood. An adjustment screw passes through the adjustment groove and connects to the mounting hole. The silencer is adjustablely connected to the smoke collection hood as a whole. A sound insulation cavity is formed between the silencer and the smoke collection hood, and a sound-absorbing layer is filled in the sound insulation cavity. A decorative cover is also installed outside the silencer. Hanging grooves are provided on both sides of the decorative cover extending backward. Hanging rods are provided on both sides of the back of the smoke collection hood. The hanging rods are hooked into the hanging grooves to fix the decorative cover outside the silencer.

[0006] The soundproof cover is integrally stamped from a metal sheet.

[0007] The sound-absorbing layer is sound-absorbing cotton.

[0008] The sound-absorbing layer is a polyurethane foam layer.

[0009] The adjustment groove is a long, waist-shaped groove that extends vertically.

[0010] The decorative cover has connecting plates that bend inward on both sides, and the hanging groove is set on the connecting plates with an open bottom.

[0011] The soundproof cover and the decorative cover are similar in shape.

[0012] The surface of the smoke hood is stamped with several reinforcing ribs.

[0013] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness.

[0014] 2. A soundproof cover is installed outside the smoke collection hood, and a sound insulation cavity is formed between the two and filled with a sound-absorbing layer to effectively absorb and attenuate noise and reduce working noise.

[0015] 3. The smoke collection hood, sound insulation cavity and sound-silencing layer, soundproof cover and decorative cover together form a multi-layer noise reduction structure, ensuring that the range hood has a significant noise reduction effect and improving the user experience.

[0016] 4. The silencer cover is adjustable and can be installed with the smoke hood, allowing users to easily adjust the vertical height of both covers. It is compatible with various sizes of smoke hoods, offering high flexibility. Furthermore, the silencer cover is made of a single piece of stamped metal sheet, resulting in high structural strength, durability, and extended service life.

[0017] 5. The decorative cover is detachable, making it easy and efficient to install and remove, and facilitating cleaning and maintenance of the range hood. Attached Figure Description

[0018] Figure 1 This is a rendering of the final assembly of this utility model.

[0019] Figure 2 This is an exploded view of the structure of the smoke hood and the range hood body in this utility model.

[0020] Figure 3 This is a schematic diagram of the back structure of the smoke hood in this utility model.

[0021] Figure 4 In this utility model Figure 3 Enlarged view of point A.

[0022] Figure 5 This is an exploded view of the structure of the smoke hood, the soundproof hood, and the decorative hood in this utility model.

[0023] Figure 6 This is an exploded view of the structure of the soundproof cover and the decorative cover in this utility model. Detailed Implementation

[0024] The present invention will now be further described in detail with reference to the accompanying drawings. A silent fan cabinet for a range hood includes a volute and a smoke collection hood 1 covering the volute. A silencer hood 2 is installed on the outside of the smoke collection hood 1. The silencer hood 2 includes a front plate 21 and side plates 22 located on both sides of the front plate 21. The front plate 21 and the side plates 22 cover the front and sides of the smoke collection hood 1. An adjustment groove 3 is provided on the top of the side plates 22. Correspondingly, mounting holes 4 are provided on both sides of the smoke collection hood 1. An adjustment screw passes through the adjustment groove 3 and connects to the mounting holes 4. The silencer hood 2 is adjustablely connected to the smoke collection hood 1 as a whole. A sound insulation cavity is formed between the silencer hood 2 and the smoke collection hood 1, and a sound-absorbing layer is filled in the sound insulation cavity. A decorative cover 5 is also installed on the outside of the silencer hood 2. Hanging grooves 51 are provided on both sides of the decorative cover 5 extending backward. Hanging rods 6 are provided on both sides of the back of the smoke collection hood 1. The hanging rods 6 are hooked into the hanging grooves 51 to fix the decorative cover 5 to the outside of the silencer hood 2.

[0025] In this range hood, a silencer is installed on the outside of the smoke collection hood. The silencer includes a front panel and side panels on both sides of the front panel. The front panel and the two side panels cover the front and sides of the smoke collection hood, with an open rear section to facilitate the installation of the range hood body, and open top and bottom sections to facilitate the entry and exit of cooking fumes. It is important to note that a sound insulation cavity is formed between the silencer and the smoke collection hood, and this cavity is filled with a sound-absorbing layer. When the fan system installed inside the smoke collection hood starts operating, the fan system and the volute generate operating noise. This noise propagates within the sound insulation cavity and is absorbed and weakened by the sound-absorbing layer, effectively reducing the intensity of noise propagation outwards. Simultaneously, the silencer itself acts as a physical barrier, further blocking noise. Furthermore, the side panel of the silencer cover is equipped with an adjustment groove. Corresponding to the position of the adjustment groove, mounting holes are provided on both sides of the smoke collection hood. An adjusting screw passes through the adjustment groove and connects to the mounting hole, allowing for relative position adjustment and fixation between the silencer cover and the smoke collection hood. This accommodates various types and sizes of smoke collection hoods, enhancing the installation flexibility and applicability of the range hood. Simultaneously, when users need to clean or maintain the range hood, loosening the adjusting screw allows for vertical adjustment or disassembly, facilitating cleaning and maintenance.

[0026] A decorative cover is installed outside the muffler, forming an outer protective layer. The decorative cover is secured to the outside of the muffler by hooks extending rearward from both sides of the decorative cover, which are then attached to hanging rods protruding from the back of the smoke hood. As an independently detachable outer component, the decorative cover allows for quick assembly and disassembly, facilitating daily cleaning and maintenance, reducing operating costs and maintenance difficulty. Furthermore, the separation of the range hood body from the decorative components allows for diverse aesthetic designs. Secondly, as the outermost layer, the decorative cover provides additional sound insulation, working in conjunction with the muffler, the soundproof cavity's sound-absorbing layer, and the smoke hood to absorb and block noise in multiple layers, significantly improving the quietness of the environment and enhancing the user experience.

[0027] The soundproof enclosure 2 is integrally stamped from a metal sheet. This integral stamping process reduces traditional welding or riveting methods, avoids potential weak points at the joints, and makes the overall structure of the enclosure more robust and stable, less prone to deformation, further reducing the possibility of sound leakage and thus improving sound insulation performance. Secondly, the increased strength of the enclosure structure helps suppress its own vibration, and it boasts high manufacturing efficiency, high surface flatness, and a more integrated and aesthetically pleasing appearance.

[0028] The sound-absorbing layer is made of sound-absorbing cotton. Sound-absorbing cotton has excellent sound absorption properties and is relatively inexpensive, helping users control the range hood and offering high cost-effectiveness. Secondly, the soft texture of the sound-absorbing cotton makes it easy to cut and fill into the sound insulation cavity. The sound-absorbing layer is also made of polyurethane foam. Polyurethane foam has excellent absorption effects on mid-to-high frequency noise. It can be foamed on-site or pre-formed, allowing for a more tight filling of every corner of the sound insulation cavity, reducing sound leakage, and offering high plasticity. Furthermore, polyurethane foam has good moisture-proof and mildew-proof properties, suitable for the humid environment of a kitchen, and good aging resistance and durability, ensuring long-term noise reduction. Users can choose the material of the sound-absorbing layer according to their actual usage needs and the available models of the range hood, offering high flexibility and applicability.

[0029] The adjustment groove 3 is a vertically extending elongated groove. This vertically extending elongated groove allows the adjustment screw to move up and down within a certain range, providing a clear movement path for the screw. This facilitates precise adjustment of the relative position of the muffler and the smoke hood, achieving accurate vertical height adjustment. The adjustment process is intuitive and convenient, and the operation is simple and easy.

[0030] The decorative cover 5 has connecting plates 52 bent inwards on both sides, and hanging grooves 51 are set on the connecting plates 52, with the bottom of the hanging grooves 51 open. The hanging grooves are set on the connecting plates with the bottom open, allowing the hanging rod of the smoke hood to slide from the bottom open end to the top of the hanging groove, achieving a hook connection under gravity. Removing the hanging rod only requires lifting the decorative cover upwards, making installation and removal simple and quick. Installation is easy and requires no tools; simply align the hanging rod and move it up and down to complete the process, facilitating daily cleaning and maintenance. Simultaneously, the inwardly bent connecting plates hold the smoke hood inside the decorative cover, enhancing the overall connection strength and load-bearing capacity, ensuring a stable connection.

[0031] The soundproof cover 2 and the decorative cover 5 are similar in shape. This similarity ensures the uniformity and aesthetics of the overall appearance of the range hood, maintains a consistent overall outline, facilitates modular production, and provides consistent internal space and installation points for different styles of decorative covers, ensuring good compatibility.

[0032] The surface of the smoke hood 1 is stamped with several reinforcing ribs 7. These ribs are manufactured through stamping, significantly improving the rigidity and overall resistance to deformation of the smoke hood material, effectively preventing deformation during prolonged use or exposure to heat and vibration. Furthermore, they reduce resonance caused by vibrations in the fan system, indirectly reducing noise, improving the durability of the smoke hood, and extending its service life.

[0033] In summary, a range hood consists of a volute and a smoke collection hood enclosing it. When the fan system starts working, the negative pressure generated draws in and exhausts the effectively captured fumes through the volute. To reduce operating noise, a soundproof cover is installed on the outside of the smoke collection hood. The front and side panels of the soundproof cover enclose the front and sides of the smoke collection hood, forming a sound insulation cavity filled with sound-absorbing cotton. When noise propagates outward from the inner walls of the volute and smoke collection hood, it first enters the sound insulation cavity, where the sound-absorbing layer absorbs and attenuates most of the sound energy, effectively reducing noise. Furthermore, the soundproof cover itself acts as a physical barrier, effectively blocking noise. Similarly, the decorative cover installed outside the soundproof cover also acts as a physical barrier, effectively blocking noise again. The smoke collection hood, sound insulation cavity and sound-absorbing layer, soundproof cover, and decorative cover together constitute a multi-layered noise reduction structure, ensuring the range hood has a significant quiet operation.

[0034] Secondly, the height of the silencer and smoke hood is adjustable, allowing for flexible adjustment of their relative vertical positions. This adjustment process only requires operating the adjusting screw to achieve both adjustment and disassembly of the silencer, resulting in high installation accuracy and high disassembly efficiency, thus facilitating subsequent cleaning and maintenance. Furthermore, the decorative cover features connecting plates that extend backward and bend inward on both sides, with hanging grooves on these plates. Corresponding hanging rods are installed on the smoke hood at the corresponding groove positions, enabling a hook-and-loop connection. This makes the installation and disassembly of the decorative cover extremely simple and quick, maximizing user efficiency and facilitating easy daily cleaning and maintenance. Therefore, it is widely applicable.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A silent fan cabinet for a range hood, characterized in that: It includes a volute and a smoke hood (1) covering the volute. A silencer (2) is installed on the outside of the smoke hood (1). The silencer (2) includes a front plate (21) and side plates (22) located on both sides of the front plate (21). The front plate (21) and the side plates (22) cover the front and sides of the smoke hood (1) inside. An adjustment groove (3) is provided above the side plate (22). Correspondingly, mounting holes (4) are provided on both sides of the smoke hood (1). An adjustment screw passes through the adjustment groove (3) and connects to the mounting hole (4). The silencer (2) is adjustablely connected to the smoke hood (1) as a whole. A sound insulation cavity is formed between the silencer (2) and the smoke hood (1). A sound insulation layer is filled in the sound insulation cavity. A decorative cover (5) is also installed outside the silencing cover (2). The decorative cover (5) has hanging grooves (51) extending backward on both sides. The smoke collection cover (1) has hanging rods (6) protruding on both sides of its back. The hanging rods (6) are hooked into the hanging grooves (51) to fix the decorative cover (5) outside the silencing cover (2).

2. The silent fan cabinet for a range hood according to claim 1, characterized in that: The soundproof cover (2) is integrally stamped from a metal sheet.

3. The silent fan cabinet for a range hood according to claim 1, characterized in that: The sound-absorbing layer is sound-absorbing cotton.

4. The silent fan cabinet for a range hood according to claim 1, characterized in that: The sound-absorbing layer is a polyurethane foam layer.

5. A silent fan cabinet for a range hood according to claim 1, characterized in that: The adjustment groove (3) is a long, waist-shaped groove that extends vertically.

6. A silent fan cabinet for a range hood according to claim 1, characterized in that: The decorative cover (5) has connecting plates (52) bent inward on both sides, and the hanging groove (51) is set on the connecting plate (52), with the bottom of the hanging groove (51) open.

7. A silent fan cabinet for a range hood according to claim 1, characterized in that: The soundproof cover (2) and the decorative cover (5) are similar in shape.

8. A silent fan cabinet for a range hood according to claim 1, characterized in that: The surface of the smoke hood (1) is stamped with several reinforcing ribs (7).

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