Air duct side plate and range hood

Abstract

The utility model provides a kind of air duct side plate and range hood, it is related to the technical field of kitchen appliance, the air duct side plate provided by the utility model is set in the total air inlet side of fan, comprising: first side plate and second side plate are set apart along inside and outside direction, first side plate is provided with the first air inlet that penetrates its inside and outside surface;Second side plate is provided with the second air inlet that penetrates its inside and outside surface, first air inlet and second air inlet at least partially overlap in inside and outside direction;First side plate is densely provided with noise reduction hole;First air inlet is used to connect with total air inlet.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a duct side panel and a range hood. Background Technology

[0002] With the widespread use and development of modern kitchen appliances, range hoods have become an indispensable piece of equipment in family kitchens. Range hoods primarily absorb cooking fumes generated during cooking by using a fan assembly to create negative pressure, thus maintaining clean and healthy air in the kitchen. The fan assembly typically consists of a motor and an impeller, which rotate at high speed to generate powerful suction.

[0003] In existing technologies, the fan components of range hoods inevitably generate vibration and airflow noise during operation. These noises mainly include mechanical noise from the motor operation, aerodynamic noise from the impeller rotation, and turbulence noise from the airflow within the flue. Since the flue is usually made of metal and rigidly connected to the building structure, the noise propagates through the flue walls and the building structure, ultimately reaching the indoor space.

[0004] Especially in high-power operating mode, the increased fan speed leads to a significant increase in noise intensity. This continuous high-frequency noise not only affects the comfort of the kitchen environment but may also interfere with normal activities in adjacent rooms. Although some noise reduction measures have been implemented in existing technologies, such as using sound-insulating materials or improving impeller design, the problem of noise transmitted through the flue has not yet been effectively solved. Utility Model Content

[0005] The purpose of this utility model is to provide a duct side plate and a range hood to alleviate the technical problem of excessive noise during operation of existing range hoods.

[0006] In a first aspect, the present invention provides a duct side plate, which is disposed on one side of the main air inlet of a fan, and includes: a first side plate and a second side plate spaced apart in the inward and outward directions; a first air inlet penetrating its inner and outer surfaces is provided on the first side plate; and a second air inlet penetrating its inner and outer surfaces is provided on the second side plate; the first air inlet and the second air inlet at least partially overlap in the inward and outward directions. The first side panel is densely covered with noise reduction holes; the first air inlet is used to connect with the main air inlet.

[0007] Furthermore, the side of the second side plate facing away from the first side plate forms a guide surface, and the guide surface is recessed towards the location of the second air inlet from the edge of the guide surface towards the second air inlet.

[0008] Furthermore, the guide surface includes a first inclined surface located to the left of the second air inlet, and the distance between the first inclined surface and the first side plate gradually decreases from the left side to the right side of the first inclined surface; The airflow guide surface includes a second inclined surface located to the left of the second air inlet. From the right side of the second inclined surface to its left side, the distance between the second inclined surface and the first side plate gradually decreases.

[0009] Furthermore, a sound-absorbing structure is provided on the side of the first side panel facing away from the second side panel.

[0010] Furthermore, the material of the sound-absorbing structure is a porous sound-absorbing material.

[0011] Furthermore, the duct side plate also includes a vibration mechanism for causing at least one of the first side plate and the second side plate to vibrate.

[0012] Furthermore, the vibration mechanism is disposed inside the gap between the first side plate and the second side plate.

[0013] Furthermore, there are multiple vibration mechanisms.

[0014] Furthermore, the edge of the first side plate has a flange that folds towards the second side plate, and the flange is connected to the edge of the second side plate. The first side plate, the flange, and the second side plate form a cavity.

[0015] Secondly, the present invention provides a range hood, including the aforementioned air duct side plate.

[0016] This utility model has at least the following advantages or beneficial effects: The air duct side plate provided by this utility model is disposed on one side of the main air inlet of the fan, including: a first side plate and a second side plate spaced apart in the inward and outward directions; a first air inlet penetrating through its inner and outer surfaces is provided on the first side plate; a second air inlet penetrating through its inner and outer surfaces is provided on the second side plate; the first air inlet and the second air inlet at least partially overlap in the inward and outward directions; noise reduction holes are densely distributed on the first side plate; the first air inlet is used to connect with the main air inlet.

[0017] The noise generated by the fan is first transmitted to the first air inlet, then through the gap between the first and second side plates, and finally out through the second air inlet. During the noise transmission process, the gap between the first and second side plates forms a cavity structure, and the first side plate is densely covered with noise reduction holes. The operating noise generated by the fan undergoes a change in diameter in the cavity structure. That is, when the noise passes through the cavity structure, the cross-sectional area of ​​the path first increases and then decreases, resulting in sound energy dissipation.

[0018] The range hood provided by this utility model includes the aforementioned duct side plate. Because the range hood provided by this utility model uses the aforementioned duct side plate, it also possesses the advantages of a duct side plate. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the duct side plate and the fan after being combined according to an embodiment of this utility model; Figure 2 A schematic diagram of the air duct side plate provided in an embodiment of this utility model; Figure 3 A schematic diagram of the first side plate of the air duct side plate provided in an embodiment of this utility model; Figure 4 A schematic diagram of the second side plate of the air duct side plate provided in an embodiment of this utility model; Figure 5 Airflow diagram of the second side plate of the duct side plate provided in this embodiment of the utility model; Figure 6 A schematic diagram of the internal structure of the air duct side plate provided in an embodiment of this utility model.

[0021] Icons: 1-Fan; 2-First side plate; 21-First air inlet; 22-Noise reduction hole; 23-Flanged edge; 3-Second side plate; 31-Second air inlet; 32-Guide surface; 321-First inclined surface; 322-Second inclined surface; 4-Vibration mechanism; 5-Air duct side plate; 6-Cavity structure. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] like Figure 1 As shown, the air duct side plate 5 provided by this utility model is located on the front side of the main air inlet of the fan 1 and is closely connected to the fan 1.

[0029] like Figure 2 As shown, the duct side plate 5 includes: a first side plate 2 and a second side plate 3 arranged parallel to each other and spaced apart in the inward and outward directions, wherein the inner side is the side closer to the fan 1.

[0030] The first side plate 2 is provided with a first air inlet 21 that penetrates its inner and outer surfaces, and the second side plate 3 is provided with a second air inlet 31 that penetrates its inner and outer surfaces. The first air inlet 21 and the second air inlet 31 are roughly completely overlapped in the inner and outer directions.

[0031] like Figure 4 As shown, the first side plate 2 is densely covered with noise reduction holes 22, which are through holes penetrating the first side plate 2.

[0032] In use, the first air inlet 21 can be directly or indirectly connected to the main air inlet, and the negative pressure generated by the fan 1 acts on the first air inlet 21.

[0033] like Figure 2 As shown, the noise generated by the fan 1 is first transmitted to the first air inlet 21, then through the gap between the first side plate 2 and the second side plate 3, and finally out from the second air inlet 31. During the noise transmission process, the gap between the first side plate 2 and the second side plate 3 forms a cavity structure 6, and the first side plate 2 is densely covered with noise reduction holes 22. The operating noise generated by the fan 1 undergoes a change in diameter in the cavity structure 6. That is, when the noise passes through the cavity structure 6, the cross-sectional area of ​​the path first increases and then decreases, resulting in sound energy dissipation.

[0034] like Figure 3 As shown, the second side plate 3 is away from the fan 1, and its side facing away from the first side plate 2 forms a guide surface 32. The oil fumes on the front side of the air duct side plate 5 enter the second air inlet 31 under the guidance of the guide surface 32. The oil fumes are directed from the edge of the guide surface 32 toward the second air inlet 31. The guide surface 32 is recessed toward the location of the second air inlet 31. The recessed structure can form a diversion effect. The oil fumes adhere to the guide surface 32 and gradually flow toward the second air inlet 31.

[0035] Specifically, such as Figure 5 As shown, the guide surface 32 includes a first inclined surface 321 located to the left of the second air inlet 31. From the left side to the right side of the first inclined surface 321, the distance between the first inclined surface 321 and the first side plate 2 gradually decreases. The guide surface 32 also includes a second inclined surface 322 located to the left of the second air inlet 31. From the right side to the left side of the second inclined surface 322, the distance between the second inclined surface 322 and the first side plate 2 gradually decreases.

[0036] The first inclined surface 321 and the second inclined surface 322 are arranged in a "V" shape. From the second air inlet 31 to the left and right sides, the first inclined surface 321 and the second inclined surface 322 gradually rise outward, and the airflow on both sides enters the second air inlet 31 along the guide surface.

[0037] A sound-absorbing structure is provided on the side of the first side plate 2 facing away from the second side plate 3. The material of the sound-absorbing structure is a porous sound-absorbing material. The sound-absorbing structure can completely cover the first side plate 2 to reduce the noise of the fan 1 during operation.

[0038] like Figure 6 As shown, the air duct side plate 5 also includes a vibration mechanism 4, which can be connected to the first side plate 2 to clear the oil stains in the noise reduction holes 22 on the first side plate 2.

[0039] The vibration mechanism 4 can also be connected to the second side plate 3. After the second side plate 3 vibrates, the oil stains attached to its guide surface 32 flow downward, reducing the oil stains.

[0040] In this embodiment, the vibration mechanism 4 is disposed inside the gap between the first side plate 2 and the second side plate 3, and is in contact with the first side plate 2 and the second side plate 3 respectively.

[0041] The number of vibration mechanisms 4 can be multiple, for example, two, which are respectively set on the left and right sides.

[0042] like Figure 4 As shown, the edge of the first side plate 2 has a flange 23 that folds towards the second side plate 3. The flange 23 is connected to the edge of the second side plate 3 by welding or by threaded connection. The first side plate 2, the flange 23 and the second side plate 3 form a cavity.

[0043] The range hood provided by this utility model includes the aforementioned duct side plate 5. Because the range hood provided by this utility model uses the aforementioned duct side plate 5, it also possesses the advantages of the duct side plate 5.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A duct side plate, wherein the duct side plate (5) is disposed on one side of the main air inlet of a fan (1), characterized in that, include: A first side plate (2) and a second side plate (3) are spaced apart along the inner and outer directions. The first side plate (2) is provided with a first air inlet (21) that penetrates its inner and outer surfaces. The second side plate (3) is provided with a second air inlet (31) that penetrates its inner and outer surfaces. The first air inlet (21) and the second air inlet (31) overlap at least partially in the inner and outer directions. The first side plate (2) is densely covered with noise reduction holes (22); the first air inlet (21) is used to connect with the main air inlet.

2. The duct side plate according to claim 1, characterized in that, The side of the second side plate (3) facing away from the first side plate (2) forms a guide surface (32), and the guide surface (32) is recessed toward the location of the second air inlet (31) from the edge of the guide surface (32).

3. The duct side plate according to claim 2, characterized in that, The guide surface (32) includes a first inclined surface (321) located to the left of the second air inlet (31). From the left side to the right side of the first inclined surface (321), the distance between the first inclined surface (321) and the first side plate (2) gradually decreases. The guide surface (32) includes a second inclined surface (322) located to the left of the second air inlet (31). From the right side of the second inclined surface (322) to its left side, the distance between the second inclined surface (322) and the first side plate (2) gradually decreases.

4. The duct side plate according to claim 1, characterized in that, The side of the first side plate (2) facing away from the second side plate (3) is provided with a sound-absorbing structure.

5. The duct side plate according to claim 4, characterized in that, The sound-absorbing structure is made of porous sound-absorbing material.

6. The duct side plate according to claim 1, characterized in that, The duct side plate (5) further includes a vibration mechanism (4) for causing at least one of the first side plate (2) and the second side plate (3) to vibrate.

7. The duct side plate according to claim 6, characterized in that, The vibration mechanism (4) is disposed inside the gap between the first side plate (2) and the second side plate (3).

8. The duct side plate according to claim 6, characterized in that, The number of vibration mechanisms (4) is multiple.

9. The duct side plate according to claim 1, characterized in that, The edge of the first side plate (2) has a flange (23) that folds towards the second side plate (3). The flange (23) is connected to the edge of the second side plate (3). The first side plate (2), the flange (23), and the second side plate (3) form a cavity.

10. A range hood, characterized in that, Includes the duct side plate as described in any one of claims 1-9.

Images