range hoods

Abstract

The present application relates to the field of household appliances and discloses a range hood comprising: a housing and a groove, wherein a flue is provided within the housing; the groove is provided on the housing, and the recessed portion of the housing diverts the oil smoke entering the flue. In the present application, the flue of the range hood is diverted by the groove, forming a non-linear flue. Noise is naturally attenuated as it passes through the non-linear flue, thereby reducing noise. The opening of the groove is on the housing, allowing for storage of items. The oil smoke that often passes through the flue is relatively hot, thus maintaining a relatively high temperature within the groove, allowing for storage of items that require insulation. This allows the range hood to achieve a good noise reduction effect while also allowing for storage, thereby improving the utilization of the range hood's internal space.

Description

Technical Field

[0001] The present application relates to the field of household appliance technology, for example, to a range hood. Background Art

[0002] Range hoods have become an essential kitchen appliance in most households. Typically, range hoods generate noise during operation, a complex mix of noises generated by various components. The primary noise component affecting the overall noise level of a range hood is fan flue noise. Currently, range hoods typically employ a muffler core within the flue to achieve optimal noise reduction. To achieve this, the core is typically thick.

[0003] During the implementation of the embodiments of the present disclosure, it was found that at least the following problems exist in the related art:

[0004] Using a larger space for noise reduction results in lower space utilization inside the range hood. Summary of the Invention

[0005] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0006] An embodiment of the present disclosure provides a range hood to solve the problem of low space utilization inside the range hood.

[0007] In some embodiments, the range hood includes: a shell and a groove, wherein a flue is provided inside the shell; the groove is provided on the shell, and the portion sunken in the shell diverts the oil smoke entering the flue.

[0008] The range hood provided by the embodiments of the present disclosure can achieve the following technical effects:

[0009] The flue of the range hood is diverted by the groove, making the flue into a non-linear shape. The noise is naturally attenuated when passing through the non-linear flue, thereby reducing the noise. The opening of the groove is on the shell, and items can be placed in the groove. The oil smoke passing through the flue is often at a higher temperature, so the temperature in the groove is relatively high, which can be used to store some items that need to be kept warm. The range hood has a better noise reduction effect while being able to store items, thereby improving the utilization of the internal space of the range hood.

[0010] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0012] Figure 1 is a structural schematic diagram of a range hood provided by an embodiment of the present disclosure;

[0013] Figure 2 is a side sectional view of a range hood provided by an embodiment of the present disclosure;

[0014] Figure 3 is a structural schematic diagram of another range hood provided by an embodiment of the present disclosure;

[0015] Figure 4 is a side sectional view of another range hood provided by an embodiment of the present disclosure;

[0016] Figure 5 is a cross-sectional view of a cover plate provided by an embodiment of the present disclosure;

[0017] Figure 6 Schematic diagram of the structure of a silencer core provided by an embodiment of the present disclosure;

[0018] Figure 7 is an exploded schematic diagram of a silencer core provided by an embodiment of the present disclosure;

[0019] Figure 8 is a structural schematic diagram of another range hood provided by an embodiment of the present disclosure;

[0020] Figure 9 is a side sectional view of another range hood provided by an embodiment of the present disclosure;

[0021] Figure 10 is a schematic structural diagram of another silencer core provided by an embodiment of the present disclosure;

[0022] Figure 11 is an exploded schematic diagram of another silencer core provided by an embodiment of the present disclosure;

[0023] Figure 12 is a cross-sectional view of another range hood provided by an embodiment of the present disclosure;

[0024] Figure 13 is a front view of a microplate provided by an embodiment of the present disclosure;

[0025] Figure 14 is a side view of a microplate provided in an embodiment of the present disclosure.

[0026] Reference numerals:

[0027] 100. Shell; 101. Flue; 102. Mounting hole; 103. Partition plate; 200. Groove; 201. Cover plate; 202. Sound insulation layer; 203. Thermal insulation layer; 204. Bracket; 300. Silencing core; 301. Connecting part; 302. Silencing part; 303. Shell connecting piece; 304. Silencing connecting rod; 305. Connecting hole; 306. Positioning protrusion; 307. Positioning groove; 400. Microporous plate; 401. Orifice plate; 402. Perforation; 403. Back plate; 500. Sealing element; 600. Sound insulation layer. DETAILED DESCRIPTION

[0028] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0029] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0030] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0031] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0032] Unless otherwise stated, the term "plurality" means two or more.

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0034] Combine Figure 1-7 As shown, an embodiment of the present disclosure provides a range hood including: a shell 100 and a groove 200 , wherein a flue 101 is provided inside the shell 100 ; the groove 200 is provided on the shell 100 , and the portion recessed in the shell 100 diverts the oil smoke entering the flue 101 .

[0035] The range hood provided by the embodiment of the present disclosure can divert the flue 101 of the range hood through the groove 200, so that the flue 101 forms a non-linear shape. The noise is naturally attenuated when passing through the non-linear flue 101, thereby reducing the noise. The opening of the groove 200 is on the shell 100, and items can be placed in the groove 200. In addition, the temperature of the oil smoke passing through the flue 101 is often relatively high, so that the temperature in the groove 200 is relatively high, and some items that need to be kept warm can be stored, so that the range hood has a better noise reduction effect while being able to store items, thereby improving the utilization of the internal space of the range hood.

[0036] Optionally, the groove 200 is a recessed portion on the housing 100 and is integrally formed with the housing 100. In this way, the groove 200 is completely isolated from the interior space of the housing 100, preventing the oil smoke from flowing out of the housing 100 through the groove 200.

[0037] Optionally, the side of the groove 200 facing the air inlet end of the flue 101 is arc-shaped. In this way, the arc-shaped structure of the groove 200 diverts the oil smoke passing through the flue 101, facilitating the oil smoke to be evenly diverted to both sides of the groove 200, making the diversion more uniform and effectively reducing wind resistance.

[0038] Optionally, the groove 200 is circular. In this way, the circular groove 200 is arc-shaped all around, which facilitates the diversion of the oil smoke entering the flue 101, so that the airflow is kept uniform everywhere on the side wall of the groove 200, reduces the formation of vortex, better guides the oil smoke, and improves the circulation efficiency of the oil smoke.

[0039] Optionally, the portion of the flue 101 corresponding to the sidewall of the groove 200 expands to both sides. In this way, the portion of the flue 101 corresponding to the groove 200 is expanded to prevent the portion of the flue 101 corresponding to the groove 200 from being too narrow to affect the passage of oil smoke.

[0040] Optionally, the portion of the flue 101 corresponding to the side wall of the groove 200 is a portion of the inner wall of the flue 101 corresponding to the left and right sides of the groove 200 .

[0041] Optionally, the shape of the flue 101 expanding to both sides is the same as the shape of the sidewalls of the groove 200. In this way, the width of the flue 101 corresponding to the sidewalls of the groove 200 can be made uniform, keeping the oil smoke passing smoothly and improving the efficiency of the oil smoke circulating in the flue 101.

[0042] Optionally, the portion of the flue 101 corresponding to the sidewall of the groove 200 is expanded in an arc shape. In this way, the oil smoke can be diverted to both sides to form a semicircular channel when passing through the groove 200 in the flue 101. In this way, the noise also needs to pass through the semicircular channel when it is transmitted outward through the flue 101, so that the noise is naturally dissipated in the semicircular channel, reducing the noise and improving the noise reduction effect of the range hood.

[0043] Optionally, a silencer core 300 is provided on the inner wall of the groove 200. In this way, by providing the silencer core 300 on the groove 200, the noise in the flue 101 can be absorbed by the silencer core 300, thereby improving the noise reduction effect of the range hood.

[0044] Optionally, the silencer core 300 is detachably connected to the groove 200. In this way, the silencer core 300 can be replaced, and a different silencer core 300 can be selected according to the requirements of the noise reduction frequency, which makes the selection of the noise reduction frequency more flexible.

[0045] Optionally, the silencer core 300 includes: a connecting portion 301, which is snap-fitted or screw-connected to the groove 200; and a silencer portion 302, which is connected to the connecting portion 301. In this way, the silencer core 300 is installed in the groove 200 by snap-fitting, which facilitates the removal and installation of the silencer core 300.

[0046] Optionally, a storage plate is provided in the groove 200. In this way, by placing items on the storage plate provided in the groove 200, it is convenient to store items in the groove 200 and improve the utilization rate of the internal space of the range hood.

[0047] Optionally, the storage plate is detachably connected to the inner wall of the groove 200. In this way, the storage space in the groove 200 can be changed by removing the storage plate, making the storage space in the groove 200 more variable.

[0048] Optionally, slots are provided on both sides of the inner wall of the groove 200, and the storage board is inserted into the slots. In this way, the storage board is fixed by the plug-in structure, which is convenient for installation, and the storage board is inserted into the slots without affecting the loading capacity of the storage board.

[0049] Optionally, the groove 200 opens to the front side of the housing 100, and a cover 201 is provided on the opening. In this way, it is convenient for the user to store items in the groove 200 through the opening on the front side, and the opening is closed by the cover 201, so that an independent space is formed in the groove 200, which is more convenient for storage.

[0050] Optionally, the cover plate 201 includes a sound insulation layer 202 and a heat preservation layer 203. This allows the cover plate 201 to have good sound insulation and heat preservation effects, improving the noise reduction effect of the range hood, and allows the cover plate 201 to maintain the temperature in the groove 200 of the range hood, making it convenient to store items that need to be kept warm or heated.

[0051] Optionally, the cover plate 201 further comprises a support 204, an inner side of which is provided with a heat-insulating layer 203, and an outer side of which is provided with a sound-insulating layer 202. Thus, arranging the heat-insulating layer 203 on the inner side can achieve a better heat-insulating effect.

[0052] Optionally, the cover plate 201 is connected to the housing 100 via a hinge, so that the cover plate 201 can be opened easily.

[0053] Optionally, the cover 201 is fixed to the housing 100 by magnetic attraction or snap fastening, so that the cover 201 is kept fixed when closed to prevent it from opening automatically.

[0054] Optionally, a partition plate 103 is further provided in the flue 101, configured to separate the flue 101 into mutually independent flue paths. Thus, by providing the partition plate 103 in the flue 101 of the range hood, the flue 101 is separated into mutually independent flue gas flow paths, which can relatively reduce the ventilation cross-sectional area, increase the noise absorption area, increase the high-frequency noise failure cutoff frequency, broaden the sound absorption frequency band, enhance the sound absorption effect, and increase the fluid flow rate, thereby accelerating the smoking process.

[0055] Optionally, the partition plate 103 is a hollow structure filled with sound absorbing material. In this way, the partition plate 103 is filled with sound absorbing material to absorb the medium and high frequency noise in the flue and improve the noise reduction effect.

[0056] Optionally, the sound absorbing material is fiber, foam, etc.

[0057] Combine Figure 8-11 As shown, the embodiment of the present disclosure provides another range hood including: a housing 100 and a muffler core 300. A flue 101 is provided inside the housing 100; the muffler core 300 is detachably connected to the housing 100 and penetrates into the housing 100 to divert the oil smoke entering the flue 101.

[0058] The range hood provided by the embodiment of the present disclosure can divert the flue 101 through the silencer core 300, so that the flue 101 forms a non-straight route. The noise will naturally decay when passing through the flue 101, thereby improving the noise reduction effect. The noise reduction core is set to penetrate into the shell 100 and is detachably connected. The silencer core 300 can be directly disassembled and replaced from the outside of the shell 100 of the range hood. Different silencer cores 300 can be selected according to different noise reduction frequency requirements, which makes the selection of noise reduction frequency more flexible. Regularly replacing or disassembling the silencer core 300 for cleaning can prevent oil smoke from accumulating on the surface of the silencer core 300 and affecting the noise reduction effect of the silencer core 300.

[0059] Optionally, the housing 100 is provided with a mounting hole 102 communicating with the flue 101, and the muffler core 300 is inserted into the flue 101 through the mounting hole 102. In this way, the muffler core 300 can be removed or installed outside the housing 100, making it easy to remove and replace the muffler core 300.

[0060] Optionally, a sealing gasket is provided between the rear side of the muffler core 300 and the inner wall of the flue 101. This ensures a high degree of sealing between the muffler core 300 and the side wall of the flue 101, preventing smoke from passing through the narrow gap between the muffler core 300 and the side wall of the flue 101 and generating sharp airflow noise.

[0061] Optionally, the muffler core 300 is inserted into the housing 100 perpendicular to the flue 101. In this way, the muffler core 300 is arranged perpendicular to the flue 101, so that the muffler core 300 can divert the oil smoke in the flue 101, making the flow of the oil smoke more stable and balanced, thereby preventing the generation of oil smoke flow noise. In addition, the muffler core 300 arranged perpendicular to the flue 101 is more convenient to install.

[0062] Optionally, the muffler core 300 passes through the center line of the flue 101 to evenly divert the oil smoke entering the flue 101. In this way, the muffler core 300 evenly diverts the oil smoke entering the flue 101, making the oil smoke flow on both sides of the muffler core 300 more balanced, preventing the uneven airflow from forming turbulence and increasing additional noise.

[0063] Optionally, the center line of the flue 101 is a straight line passing through the center point of the flue 101 along the airflow direction in the flue 101 .

[0064] Optionally, the center line of the muffler core 300 passes through the center line of the flue 101. In this way, the muffler core 300 is located exactly in the middle of the flue 101, dividing the flue 101 evenly into two channels, thereby diverting the oil smoke in the flue 101 and making the diversion of the oil smoke more uniform.

[0065] Optionally, the center line of the silencer core 300 is a straight line passing through the center point of the silencer core 300 and perpendicular to the center line of the flue 101 .

[0066] Optionally, the sidewall portion of the flue 101 corresponding to the muffler core 300 is expanded to both sides. In this way, the portion of the flue 101 corresponding to the muffler core 300 is expanded to prevent the portion of the flue 101 corresponding to the muffler core 300 from being too narrow to affect the passage of oil smoke.

[0067] Optionally, the outwardly expanded portion of the side wall of the flue 101 corresponding to the muffler core 300 has the same shape as the side wall of the muffler core 300. In this way, the width of the flue 101 corresponding to the side wall of the muffler core 300 can be made uniform, ensuring smooth passage of oil smoke and improving the efficiency of oil smoke circulation in the flue 101.

[0068] Optionally, the side of the muffler core 300 facing the air inlet end of the flue 101 is arc-shaped. In this way, the arc on one side of the muffler core 300 diverts the oil smoke in the flue 101, making it easier for the oil smoke to flow evenly to both sides of the muffler core 300, which can effectively reduce wind resistance.

[0069] Optionally, the muffler core 300 is circular. Thus, the four sides of the circular muffler core 300 are all arc-shaped, which facilitates diversion of the oil smoke entering the flue 101, maintains uniform airflow at all locations on the sidewall of the muffler core 300, reduces the formation of vortices, better guides the oil smoke, and improves the circulation efficiency of the oil smoke.

[0070] Optionally, the sidewall of the flue 101 corresponding to the muffler core 300 is expanded outward in an arc shape. This allows the oil smoke to be diverted to both sides of the muffler core 300 in the flue 101 to form a semicircular channel. In this way, the noise also needs to pass through the semicircular channel when it is transmitted outward through the flue 101, so that the noise is naturally dissipated in the semicircular channel, reducing the noise and improving the noise reduction effect of the range hood.

[0071] Optionally, the interior of the silencer core 300 is a hollow structure. In this way, the interior of the silencer core 300 is a hollow structure, and storage can be performed in the hollow structure, so that the range hood maintains a good noise reduction effect while allowing for appropriate storage and improving the utilization rate of the interior space of the range hood.

[0072] Optionally, the shape of the hollow structure inside the silencer core 300 is the same as that of the silencer core 300 and is located in the center of the silencer core 300. In this way, the thickness of the side wall of the silencer core 300 can be made more uniform, the noise absorption effect can be better, and the noise reduction effect of the range hood can be improved.

[0073] Optionally, the muffler core 300 includes a connecting portion 301 including a shell connecting piece 303 and a muffler connecting rod 304 perpendicular to the shell connecting piece 303; and a muffler portion 302 connected to the muffler connecting rod 304. This allows the muffler core 300 to be better connected to the shell 100, making it easier to remove and install the muffler core 300.

[0074] Optionally, the silencer core 300 is circular, and the housing connecting piece 303 is disc-shaped, with the disc-shaped housing connecting piece 303 being threadedly connected to the housing 100. Thus, the silencer core 300 is mounted on the housing 100 via the threaded connection, which facilitates installation and provides a tighter connection between the disc-shaped housing connecting piece 303 and the housing 100, preventing oil smoke from leaking through the gap between the housing connecting piece 303 and the housing 100.

[0075] Optionally, the shell connecting piece 303 is connected to the shell 100 in a plug-in manner. In this way, the plug-in connection makes it more convenient to disassemble the silencer core 300.

[0076] Optionally, the size of the housing connecting piece 303 is larger than the size of the mounting hole 102 on the housing 100. In this way, the housing connecting piece 303 can cover the mounting hole 102 to prevent the oil smoke from leaking through the mounting hole 102.

[0077] Optionally, the muffler connecting rod 304 is vertically connected to the center point of the shell connecting piece 303. In this way, the muffler part 302 mounted on the muffler connecting rod 304 is concentric with the shell connecting piece 303, maintaining the thickness of each part of the muffler part 302 consistent, thereby improving the noise reduction effect.

[0078] Optionally, the connection portion 301 is sealed to the housing 100. In this way, the connection portion 301 and the housing 100 are tightly connected to prevent the oil smoke from leaking through the gap between the connection portion 301 and the housing 100.

[0079] Optionally, a sealing gasket is provided in the gap between the connecting portion 301 and the housing 100. In this way, the sealing between the silencer core 300 and the housing 100 can be maintained to prevent oil smoke leakage.

[0080] Optionally, an oil-proof and sound-permeable layer is provided on the outside of the muffler 302. In this way, it is possible to prevent the oil smoke from solidifying and adsorbing on the muffler 302 and thus affecting the muffler effect of the muffler 302.

[0081] Optionally, the oil-proof sound-permeable layer is a film made of polytetrafluoroethylene material. In this way, polytetrafluoroethylene has good oleophobicity and can prevent oil from adhering to the muffler 302 and affecting the noise reduction effect of the muffler 302.

[0082] Optionally, the muffler portion 302 is detachably connected to the muffler connecting rod 304. In this way, the muffler portion 302 can be detached separately, making it easy to replace the muffler portion 302 separately, and the connecting portion 301 can be reused, saving costs.

[0083] Optionally, a connecting hole 305 is provided in the middle of the muffler 302, and the connecting hole 305 is connected to the muffler connecting rod 304. In this way, the muffler 302 can be sleeved on the muffler connecting rod 304, maintaining a uniform thickness of each part of the muffler 302, and improving the noise reduction effect of the muffler 302.

[0084] Optionally, the silencer connecting rod 304 is threadedly connected to the connecting hole 305. In this way, the threaded connection is more stable, the silencer portion 302 can be prevented from falling off, and the position of the silencer core 300 is restricted to prevent it from rotating.

[0085] Optionally, a positioning protrusion 306 is provided on the muffler connecting rod 304, and a positioning groove 307 is provided in the connecting hole 305 and extends along the depth direction of the connecting hole 305. In this way, after the positioning protrusion 306 is inserted into the positioning groove 307, the muffler part 302 can be prevented from rotating along the muffler connecting rod 304, thereby maintaining the stability of the muffler part 302.

[0086] Optionally, the diameter of the muffler portion 302 is less than or equal to the diameter of the disc-shaped housing connecting piece 303. In this way, the muffler portion 302 can be directly inserted into the housing 100 through the mounting hole 102, making it easier to remove and install the muffler core 300.

[0087] Optionally, the muffler 302 is made of sound-absorbing materials such as fibers and foams, so as to reduce the noise of medium and high frequencies.

[0088] Combine Figure 12-14 As shown, another range hood provided by the embodiment of the present disclosure includes: a flue 101 and a microporous plate 400. The microporous plate 400 covers the side wall of the flue 101, and a sealing member 500 is provided in the gap between the microporous plate 400 and the flue 101.

[0089] Using the range hood provided by the embodiment of the present disclosure, a microporous plate 400 is set in the flue 101 of the range hood, and the gap between the microporous plate 400 and the flue 101 is sealed to prevent the air flow from passing through the narrow gap and generating additional noise. The microporous plate 400 is small in size and has a good noise reduction effect, so that the noise reduction effect can be guaranteed when the internal space of the range hood is limited. In addition, the microporous plate 400 is resistant to moisture and not easy to be damaged, and has a long service life.

[0090] Optionally, the micro-perforated plate 400 includes: a perforated plate 401 having perforations 402; and a back plate 403 covering one side of the perforated plate 401 with an air layer between the back plate 403 and the perforated plate 401. Thus, noise enters the air layer between the perforated plate 401 and the back plate 403 through the perforations 402, resonates within the air layer, and attenuates the noise, achieving a good noise reduction effect within a limited space.

[0091] Optionally, multiple microporous plates 400 are provided, and each microporous plate 400 may differ in at least one of the following parameters: perforation rate; plate thickness; perforation diameter; and air layer thickness. Thus, the perforation rate, plate thickness, perforation diameter, and air layer thickness of the microporous plate 400 directly affect the noise reduction frequency of the microporous plate 400. By providing multiple microporous plates 400 with different characteristics, the range hood can absorb noise of various frequencies, thereby enhancing the noise reduction effect of the range hood.

[0092] Optionally, the relationship between the noise reduction frequency and the perforation rate, plate thickness, perforation diameter, and air layer thickness is as follows:

[0093] in,

[0094] f r is the noise reduction frequency; c is the speed of sound; P is the perforation ratio; t is the plate thickness, i.e., the thickness of the orifice plate 401; d is the perforation diameter; and L is the thickness of the air layer. Using this optional embodiment, the values ​​of the various parameters are adjusted according to the formula to absorb noise of different frequencies.

[0095] Optionally, a sealant 500 is also provided in the gaps between the plurality of microporous plates 400. In this way, the gaps between the plurality of microporous plates 400 are sealed by the sealant 500 to prevent the airflow from passing through the narrow gaps to form sharp noises, thereby reducing the generation of noise.

[0096] Optionally, the plurality of micro-perforated plates 400 are connected by welding. In this way, the plurality of micro-perforated plates 400 are connected as a whole by welding, so that the micro-perforated plates 400 form a large whole, thereby improving the stability of the connection between the micro-perforated plates 400 and avoiding the formation of gaps between the micro-perforated plates 400, thereby preventing the airflow from passing through the narrow gaps and generating sharp noise.

[0097] Optionally, the flue 101 is a rectangular flue 101, and four different microporous plates 400 are used to enclose a rectangle, so as to cover part or all of the four side walls of the flue 101. In this way, each position in the flue 101 can absorb noise of different frequencies, thereby improving the noise reduction effect.

[0098] Optionally, the sealing member 500 is a rubber gasket or a sealant. In this way, the rubber gasket is used for sealing, and the installation and removal of the microporous plate 400 are conducive to the replacement of the microporous plate 400, and the use of the sealant has a better sealing effect.

[0099] Optionally, a rubber sealing gasket is attached to the other side surfaces of the micro-perforated plate 400 except the side with the perforation 402. In this way, the side of the micro-perforated plate 400 in contact with the flue 101 and the sides of the micro-perforated plates 400 in contact with each other can all be in contact through the rubber sealing gasket, thereby improving the sealing effect of the gap, preventing the sharp noise generated by the airflow passing through the gap, and improving the noise reduction effect of the range hood.

[0100] Optionally, one side of the microporous plate 400 is covered with an oil-proof sound-permeable membrane. In this way, the oil-proof sound-permeable membrane prevents condensed smoke from sticking to the microporous plate 400 and causing clogging of the perforations 402 on the microporous plate 400, thereby affecting the noise reduction effect of the microporous plate 400.

[0101] Optionally, the oil-proof sound-permeable layer is a film made of polytetrafluoroethylene material. In this way, polytetrafluoroethylene has good oleophobicity and can prevent oil from adhering to the muffler 302 and affecting the noise reduction effect of the muffler 302.

[0102] Optionally, the microporous plate 400 is detachably connected to the flue 101. In this way, the microporous plate 400 can be disassembled and replaced, and by replacing different microporous plates 400, the frequency selectivity of the range hood noise reduction is higher, thereby improving the noise reduction effect.

[0103] Optionally, screws are used to fix the micro-porous plate 400 and the flue 101. In this way, the micro-porous plate 400 and the flue 101 are fixed more firmly and the disassembly of the micro-porous plate 400 and the flue 101 is convenient.

[0104] Optionally, the microporous plate 400 is connected to the flue 101 via a snap-fit ​​connection, which makes installation and removal more convenient and quick.

[0105] Optionally, a claw is provided on the side wall of the flue 101, and a slot is provided on one side of the microporous plate 400. In this way, the claw is engaged with the slot to fix the microporous plate 400 on the side wall of the flue 101. The claw is provided on the side wall of the flue 101 without damaging the side wall of the flue 101, thereby preventing oil smoke from escaping from the side wall of the flue 101.

[0106] Optionally, the side wall of the flue 101 is also covered with a sound-absorbing layer 600. In this way, by covering the sound-absorbing layer 600, the space inside the range hood is fully utilized, so that the noise reduction effect of the range hood is better.

[0107] Optionally, the sound-absorbing layer 600 is disposed in the space between the outer wall of the flue 101 and the shell 100. In this way, the space between the side wall of the flue 101 and the shell 100 is fully utilized, reducing the amount of noise that is directly transmitted through the flue 101 and the shell 100, thereby improving the noise reduction effect.

[0108] Optionally, the flue 101 includes a straight portion, wherein the airflow direction inside the flue 101 is parallel to the inner wall thereof. In this way, the oil smoke in the flue 101 will not impact the inner wall of the flue 101 during flow, thereby reducing the impact force on the microporous plate 400 and preventing the airflow from flowing into the perforations 402 of the microporous plate 400, thereby affecting the noise reduction effect of the microporous plate 400.

[0109] Optionally, the microporous plate 400 is disposed on the side wall of the straight portion of the flue 101. In this way, the airflow direction inside the straight portion is parallel to its inner wall, reducing the impact force on the microporous plate 400 and preventing the airflow from flowing into the perforations 402 of the microporous plate 400, thereby affecting the noise reduction effect of the microporous plate 400.

[0110] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A range hood, characterized in that: include: a shell having a flue provided therein; A groove is provided on the shell, and the part recessed in the shell diverts the oil smoke entering the flue. A silencer core is provided on the inner wall of the groove. The silencer core and the groove are detachably connected, and the silencer core can be replaced. The interior of the silencer core is a hollow structure.

2. The range hood according to claim 1, characterized in that: The side of the groove facing the air inlet end of the flue is arc-shaped.

3. The range hood according to claim 2, characterized in that: The groove is circular.

4. The range hood according to claim 1, characterized in that: The portion of the flue corresponding to the side wall of the groove expands toward both sides.

5. The range hood according to claim 4, characterized in that: The shape of the flue expanding toward both sides is the same as the shape of the side wall of the groove.

6. The range hood according to any one of claims 1 to 5, characterized in that: The silencer core comprises: A connecting portion, which is snap-connected or spirally connected to the groove; The muffler is connected to the connecting portion.

7. The range hood according to any one of claims 1 to 5, characterized in that: A storage plate is provided in the groove.

8. The range hood according to any one of claims 1 to 5, characterized in that: A storage plate is provided in the groove.

9. The range hood according to any one of claims 1 to 5, characterized in that: The groove opens to the front side of the shell, and a cover plate is provided on the opening.

10. The range hood according to claim 9, characterized in that: The cover plate comprises a sound insulation layer and a heat preservation layer.

Images