Oil smoke treatment device

Abstract

The utility model discloses an oil smoke treatment device and belongs to the technical field of household appliances. The oil smoke treatment device comprises a pipeline assembly, a fan system and a smoke collection system, the pipeline assembly comprises a connecting pipe and a noise reduction assembly arranged outside the connecting pipe, the noise reduction assembly is provided with a noise reduction cavity with the variable size, the fan system is arranged on the upper portion of the connecting pipe in a communicating mode, and the smoke collection system is arranged on the lower portion of the connecting pipe in a communicating mode. By changing the volume of the noise reduction cavity, the resonance noise elimination effect on noise of different frequency bands is achieved, and the applicability is improved, so that the low-frequency noise reduction purpose of the oil smoke treatment device is achieved, and the use experience of a user is improved.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to an oil fume treatment device. Background Technology

[0002] Range hoods have become an indispensable kitchen appliance in modern homes. Their primary function is to remove cooking fumes during cooking, thus maintaining a clean kitchen environment. Existing range hoods consist of a fan housing, a fan, and a smoke collection system. The fan is housed inside the fan housing, while the smoke collection system is located below and connected to it. When in use, the fan operates, creating a negative pressure zone above the stove, drawing cooking fumes into the hood. The fumes are then exhausted outdoors through ductwork.

[0003] Existing range hoods typically use passive noise reduction, which usually involves installing sound-absorbing cotton to achieve a noise reduction effect. However, the sound absorption frequency of the cotton is mainly concentrated in the mid-to-high frequency range, and its noise reduction effect on the low frequency range is poor.

[0004] Therefore, there is an urgent need to design a new fume treatment device to improve the problem of poor low-frequency noise reduction effect. Utility Model Content

[0005] The purpose of this invention is to provide an oil fume treatment device that can achieve low-frequency noise reduction and improve the user experience.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The fume treatment device includes:

[0008] A piping assembly, including a connecting pipe and a noise reduction component disposed outside the connecting pipe, the noise reduction component having a noise reduction cavity with variable volume;

[0009] The fan system is connected to the upper part of the connecting pipe; and,

[0010] The smoke collection system is connected to the lower part of the connecting pipe.

[0011] As an optional technical solution for oil fume treatment devices, an installation part is provided on the outer wall of the connecting pipe, and the noise reduction component can be detachably connected to the installation part.

[0012] As an optional technical solution for the fume treatment device, the installation part is a slide rail, which extends along the height direction of the connecting pipe, and the noise reduction component is slidably connected to the slide rail.

[0013] As an optional technical solution for fume treatment devices, a limiting part is provided on the outer wall of the connecting pipe. The limiting part is used to restrict the installation position of the noise reduction components.

[0014] As an optional technical solution for oil fume treatment devices, the noise reduction component includes a housing and a sliding member. The housing is detachably connected to the mounting part. The housing has an opening facing the connecting pipe to form a noise reduction cavity with the connecting pipe. The sliding member is disposed in the housing and is slidably connected to the inner wall of the housing to change the volume of the noise reduction cavity.

[0015] As an optional technical solution for the fume treatment device, one of the sliding parts and the inner wall surface of the housing is provided with a slide rail, and the other is provided with a slider. The slide rail is arranged in the front-back direction, and the slider is slidably connected to the slide rail.

[0016] As an optional technical solution for oil fume treatment devices, the sliding component is provided with a handle, which at least partially protrudes from the housing and is used to drag the sliding component to move.

[0017] As an optional technical solution for fume treatment devices, the connecting pipe has multiple noise reduction through holes on its wall, which connect the internal space of the connecting pipe with the noise reduction cavity.

[0018] As an optional technical solution for the fume treatment device, the cross-section of the connecting pipe is rectangular, and the dimension of the connecting pipe in the left-right direction is greater than the dimension in the front-back direction. Noise reduction components are provided on the left side wall and / or right side wall of the connecting pipe.

[0019] As an optional technical solution for fume treatment devices, the fume collection system includes a fume collection chamber, in which a shielding component is provided. The shielding component can change the cross-sectional shape of the internal cavity of the fume collection chamber, thereby creating an expansion cavity with noise reduction effect in the fume collection chamber.

[0020] This utility model includes at least the following technical effects:

[0021] The oil fume treatment device disclosed in this utility model includes a pipeline assembly, a fan system, and a smoke collection system. The pipeline assembly includes a connecting pipe and a noise reduction component disposed outside the connecting pipe. The noise reduction component has a variable-volume noise reduction cavity. The fan system is connected to the upper part of the connecting pipe, and the smoke collection system is connected to the lower part of the connecting pipe. By changing the volume of the noise reduction cavity, the resonance silencing effect of noise in different frequency bands is achieved, improving applicability and thus achieving the purpose of low-frequency noise reduction in this oil fume treatment device, thereby enhancing the user experience. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the fume treatment device provided in a specific embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the connecting pipe and noise reduction component after assembly according to a specific embodiment of this utility model;

[0025] Figure 3 This is a schematic diagram of the connecting pipe provided in a specific embodiment of the present utility model;

[0026] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0027] Figure 5 yes Figure 3 A magnified view of a section at point B in the middle;

[0028] Figure 6 This is a schematic diagram of the structure of the noise reduction component provided in a specific embodiment of this utility model;

[0029] Figure 7 yes Figure 6 A magnified view of a section at point C;

[0030] Figure 8 This is a schematic diagram of the structure of the shell provided in a specific embodiment of this utility model;

[0031] Figure 9 yes Figure 8 A magnified view of a section at point D;

[0032] Figure 10 This is a schematic diagram of the structure of the sliding component provided in a specific embodiment of this utility model;

[0033] Figure 11 This is a schematic diagram of the structure of the smoke collection chamber of the smoke collection system provided in a specific embodiment of this utility model;

[0034] Figure 12 This is a schematic diagram of the flow channel cross-section of the smoke collection chamber provided in a specific embodiment of this utility model.

[0035] In the picture:

[0036] 1. Fan system;

[0037] 2. Piping assembly; 21. Connecting pipe; 22. Noise reduction assembly; 211. Mounting part; 212. Limiting part; 213. Noise reduction through hole; 221. Housing; 222. Sliding part; 2211. Slide rail; 2221. Slider; 2222. Handle; 2223. Slide plate; 2224. Cover plate;

[0038] 3. Smoke collection system; 31. Shielding component; 32. Expansion chamber;

[0039] 100. Fume treatment device. Detailed Implementation

[0040] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0046] like Figure 1 As shown, this embodiment discloses an oil fume treatment device 100. The oil fume treatment device 100 can be any type of device with oil fume treatment function, such as a top-mounted range hood, a side-suction range hood, or a top-suction range hood. All types of devices with oil fume treatment function are within the protection scope of this embodiment. This embodiment takes a top-mounted range hood as an example to describe the structure of the oil fume treatment device 100.

[0047] like Figure 1 As shown, the fume treatment device 100 includes a pipe assembly 2, a fan system 1, and a fume collection system 3. One end of the pipe assembly 2 is connected to the fan system 1, and the other end of the pipe assembly 2 is connected to the fume collection system 3. The fan system 1 includes a fan housing and a fan installed inside the fan housing. The fan can generate negative pressure, which allows the fumes from the cooking area to pass sequentially through the fume collection system 3, the pipe assembly 2, and the fan housing before being discharged outdoors. It should be noted that... Figure 1 In the diagram, ab represents the front-back direction, cd represents the left-right direction, and ef represents the up-down direction.

[0048] Specifically, the piping assembly 2 includes a connecting pipe 21 and a noise reduction assembly 22 disposed outside the connecting pipe 21. The noise reduction assembly 22 has a variable-volume noise reduction cavity. The fan system 1 is connected to the upper part of the connecting pipe 21, and the smoke collection system 3 is connected to the lower part of the connecting pipe 21. By changing the volume of the noise reduction cavity, the resonance silencing effect of noise in different frequency bands is achieved, improving applicability and thus achieving the goal of low-frequency noise reduction of the fume treatment device 100, thereby enhancing the user experience.

[0049] like Figure 2 As shown, the connecting pipe 21 has multiple noise reduction through holes 213 on its wall, which connect the internal space of the connecting pipe 21 to the noise reduction cavity. By providing noise reduction through holes 213 on the wall of the connecting pipe 21, the noise reduction effect is improved.

[0050] like Figure 3 and Figure 4 As shown, a mounting part 211 is provided on the outer wall of the connecting pipe 21, and the noise reduction component 22 is detachably connected to the mounting part 211. The detachable connection facilitates subsequent maintenance and replacement of the noise reduction component 22, improving operational convenience.

[0051] In this embodiment, the mounting part 211 is a slide rail, which extends along the height direction of the connecting pipe 21, and the noise reduction component 22 is slidably connected to the slide rail. During assembly, the noise reduction component 22 can be easily assembled with the connecting pipe 21 via the slide rail, and during disassembly, the noise reduction component 22 can also be easily removed from the connecting pipe 21 via the slide rail, saving time and effort and facilitating operation. At the same time, the slide rail guides the assembly of the noise reduction component 22. It should be noted that the mounting part 211 is not limited to a slide rail structure. In other feasible embodiments, the mounting part 211 can also be a snap-fit ​​structure, a magnetic structure, or other structures that enable detachable connection, which will not be listed here.

[0052] like Figure 3 and Figure 5 As shown, a limiting part 212 is also provided on the outer wall of the connecting pipe 21. The limiting part 212 is used to limit the installation position of the noise reduction component 22 to avoid the noise reduction component 22 being installed improperly, thereby affecting the noise reduction effect. Specifically, the limiting part 212 is located below the mounting part 211. The noise reduction component 22 is assembled along the slide and cooperates with the limiting part 212 to limit its final installation position. In this embodiment, the limiting part 212 is a bracket structure that protrudes from the outer wall of the connecting pipe 21 and extends outward. When the noise reduction component 22 abuts against the surface of the bracket structure, it indicates that the noise reduction component 22 is installed in place. The outward extension distance of the bracket structure should not be too large, just enough to have a certain contact area with the noise reduction component 22.

[0053] like Figure 6As shown, the noise reduction component 22 includes a housing 221 and a slider 222. The housing 221 is detachably connected to the mounting portion 211 and can abut against the limiting portion 212. The housing 221 has an opening facing the connecting pipe 21 to form a noise reduction cavity between itself and the outer wall of the connecting pipe 21. The slider 222 is disposed in the housing 221 and is slidably connected to the inner wall of the housing 221 to change the volume of the noise reduction cavity. By adjusting the position of the slider 222 in the housing 221, the volume of the noise reduction cavity can be adjusted, thereby reducing noise in different frequency bands. Specifically, when the slider 222 moves closer to the connecting pipe 21, the depth and volume of the noise reduction cavity decrease; conversely, when the slider 222 moves away from the connecting pipe 21, the depth and volume of the noise reduction cavity increase. In this embodiment, the greater the depth of the noise reduction cavity, the better the low-frequency noise reduction effect. It should be noted that the low-frequency noise of the fan system 1 is approximately 500Hz-1000Hz.

[0054] In this embodiment, the connecting pipe 21 has a rectangular cross-section, and its dimension in the left-right direction is greater than its dimension in the front-back direction. That is, the connecting pipe 21 is a rectangular thin-walled tube structure. Noise reduction components 22 are provided on the left and / or right walls of the connecting pipe 21. This structural design allows the connecting pipe 21 to be installed close to the wall, reducing the size of the connecting pipe 21 protruding from the wall and facilitating installation. It is understood that the cross-section of the connecting pipe 21 can also be elliptical, trapezoidal, or circular, etc.

[0055] In the above structure, the side wall of the connecting pipe 21 is provided with noise reduction through holes 213, mounting part 211 and limiting part 212. The noise reduction through holes 213 are distributed in a rectangular array on the side wall. Each side edge of the side wall is provided with a mounting part 211, that is, each is provided with a slide. The bottom of the side wall is provided with a limiting part 212. The protruding dimension of the limiting part 212 is consistent along the front and back direction of the side wall.

[0056] The cross-section of the slideway is Z-shaped, including a first side, a second side, and a third side that are sequentially connected at an angle. The first side is fixed on the outer wall surface of the connecting pipe 21, and there is a gap between the third side and the outer wall surface of the connecting pipe 21. On both sides of the housing 221 of the noise reduction component 22, there are respectively outward flanges. During assembly, the outward flanges can be inserted into the gap and move along the gap until the assembly is in place. This gap not only provides a guiding function for the assembly of the housing 221 but also has a limiting effect on the housing 221. It should be noted that the length of the slideway is not greater than the length of the outward flange, preferably less than. That is, after the assembly is completed, the housing 221 of the noise reduction component 22 extends beyond the slideway by a certain distance to provide an operating force application point. Optionally, there is a distance between the top of the slideway and the top of the connecting pipe 21. The housing 221 of the noise reduction component 22 is inserted into the slideway from this position and slides down from top to bottom until the bottom surface of the outward flange of the housing 221 abuts against the top surface of the limiting portion 212, completing the assembly of the noise reduction component 22 and the connecting pipe 21.

[0057] In this embodiment, the first side is parallelly affixed and fixed to the outer wall surface of the connecting pipe 21. The angles between the first side and the second side and between the second side and the third side are both right angles, and the third side is parallel to the outer wall surface of the connecting pipe 21. To improve the guiding and connection stability of the mounting portion 211 to the housing 221 of the noise reduction component 22, the width of the third side can be greater than the widths of the first side and the second side respectively. Optionally, the width of the third side can be equal to the width of the outward flange. Under this structure, the third side can better prevent the outward flange from skewing or shaking, thereby improving the assembly stability of the noise reduction component 22 and the connecting pipe 21.

[0058] To achieve the sliding fit between the sliding member 222 and the housing 221, as Figures 6 to 10 shown, on one of the inner wall surfaces of the sliding member 222 and the housing 221, there is a slideway 2211, and on the other, there is a slider 2221. The slideway 2211 is arranged in the front-rear direction, and the slider 2221 is slidably connected to the slideway 2211. The connection method between the slideway 2211 and the slider 2221 is simple and easy to implement. In this embodiment, as Figure 9 and Figure 10 shown, on the inner wall surface of the housing 221, there is a slideway 2211, and on the sliding member 222, there is a slider 2221.

[0059] Optionally, as Figure 8 shown, the housing 221 is a rectangular housing, integrally in a U-shaped, including a large surface and two side surfaces. The two side surfaces are respectively connected to both sides of the large surface, and the large surface faces the opening of the housing 221. Correspondingly, as Figure 10As shown, the slider 222 includes a slide plate 2223, which is a rectangular thin plate structure. The slide plate 2223 and the housing 221 are of equal length, or the length of the slide plate 2223 is slightly less than the length of the housing 221. The width of the slide plate 2223 is approximately equal to the internal width of the housing 221. In this structure, slide rails 2211 are provided on the inner walls of the two sides of the housing 221, and sliders 2221 are provided on both sides of the slide plate 2223. To improve the stability and smoothness of the slider 222 sliding along the housing 221, such as... Figure 8 and Figure 10 As shown, at least two slide rails 2211 are provided on the inner walls of both sides of the housing 221, and the at least two slide rails 2211 are spaced apart. Correspondingly, at least two sliders 2221 are provided on both sides of the slide plate 2223, and the sliders 2221 and the slide rails 2211 are connected in a one-to-one correspondence. In this embodiment, a pair of slide rails 2211 are provided near the top of the housing 221, and a pair of slide rails 2211 are provided in the middle of the housing 221.

[0060] like Figure 7 and Figure 10 As shown, the slider 222 is provided with a handle 2222, which at least partially protrudes from the housing 221. The handle 2222 is used to drag the slider 222 to move, making it convenient for the user to adjust the position of the slider 222 in the housing 221. In this embodiment, the slider 222 also includes a cover plate 2224 connected to the top of the slide plate 2223. The handle 2222 is disposed on the cover plate 2224. During assembly, the slide plate 2223 is located in the housing 221, and the cover plate 2224 is located on top of the housing 221. By dragging the handle 2222, the slide plate 2223 can be moved.

[0061] In this embodiment, such as Figure 11 and Figure 12As shown, to further improve the noise reduction effect, a shielding component 31 is provided in the smoke collection chamber of the smoke collection system 3. The shielding component 31 can change the cross-sectional shape of the internal cavity of the smoke collection chamber, thereby creating an expansion cavity 32 with a noise reduction effect within the smoke collection chamber. Specifically, before the shielding component 31 is provided, the internal cavity of the smoke collection chamber includes a wide flow channel (large volume) and a narrow flow channel (small volume), which are connected sequentially. After a large amount of airflow enters the smoke collection chamber, it first flows through the wide flow channel and then into the narrow flow channel. Due to the sudden narrowing of the cross-section, the noise is very loud when a large amount of airflow enters the narrow flow channel. Therefore, the shielding component 31 is provided in the wide flow channel of the smoke collection chamber to create an expansion cavity 32 within the wide flow channel. The expansion cavity 32 has a noise reduction and sound attenuation function. Its working principle is as follows: The noise reduction principle of the expansion cavity 32 is mainly based on the working principle of the reactive silencer. Its core is to use the abrupt change in cross section to form an impedance mismatch in the sound propagation channel, so that the sound wave propagating along the pipe is reflected towards the sound source. In this way, the phase difference between the forward sound wave and the reflected sound wave at different interfaces of the pipe is 180 degrees, and they interfere with each other to cancel each other out, thus achieving the purpose of sound attenuation.

[0062] Optionally, the shielding component 31 is a shielding plate, which is arranged perpendicular to the flow direction of the flue gas. One shielding component 31 is arranged on each of the left and right sides of the wide flow channel, making the structure of the expansion chamber 32 more symmetrical and improving the noise reduction effect.

[0063] Obviously, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

[0064] Note that in the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An oil fume treatment device, characterized in that, include: The piping assembly (2) includes a connecting pipe (21) and a noise reduction assembly (22) disposed outside the connecting pipe (21), the noise reduction assembly (22) having a noise reduction cavity with variable volume; The fan system (1) is connected to the upper part of the connecting pipe (21); as well as, The smoke collection system (3) is connected to the lower part of the connecting pipe (21).

2. The fume treatment device according to claim 1, characterized in that, The outer wall of the connecting pipe (21) is provided with a mounting part (211), and the noise reduction component (22) is detachably connected to the mounting part (211).

3. The oil fume treatment device according to claim 2, characterized in that, The mounting part (211) is a slide (2211), which extends along the height direction of the connecting pipe (21), and the noise reduction component (22) is slidably connected to the slide (2211).

4. The fume treatment device according to claim 1, characterized in that, A limiting part (212) is provided on the outer wall surface of the connecting pipe (21), and the limiting part (212) is used to limit the installation position of the noise reduction component (22).

5. The fume treatment device according to claim 2, characterized in that, The noise reduction component (22) includes a housing (221) and a slider (222). The housing (221) is detachably connected to the mounting part (211). The housing (221) has an opening facing the connecting pipe (21) to form the noise reduction cavity with the connecting pipe (21). The slider (222) is disposed in the housing (221) and is slidably connected to the inner wall of the housing (221) to change the volume of the noise reduction cavity.

6. The fume treatment device according to claim 5, characterized in that, The inner wall surface of the slider (222) and the housing (221) is provided with a slide rail (2211) on one of them and a slider (2221) on the other. The slide rail (2211) is arranged in the front-back direction, and the slider (2221) is slidably connected to the slide rail (2211).

7. The fume treatment device according to claim 5, characterized in that, The slider (222) is provided with a handle (2222), which at least partially protrudes from the housing (221) and is used to drag the slider (222) to move.

8. The fume treatment device according to claim 1, characterized in that, The connecting pipe (21) has a plurality of noise reduction through holes (213) on its wall, and the noise reduction through holes (213) connect the internal space of the connecting pipe (21) with the noise reduction cavity.

9. The fume treatment device according to any one of claims 1-8, characterized in that, The cross-section of the connecting pipe (21) is rectangular, and the dimension of the connecting pipe (21) in the left-right direction is greater than the dimension in the front-back direction. The noise reduction component (22) is provided on the left side wall and / or right side wall of the connecting pipe (21).

10. The fume treatment device according to any one of claims 1-8, characterized in that, The smoke collection system (3) includes a smoke collection chamber, in which a shielding member (31) is provided. The shielding member (31) can change the cross-sectional shape of the internal cavity of the smoke collection chamber, thereby creating an expansion cavity (32) with noise reduction effect in the smoke collection chamber.

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