Smoke collecting main body and range hood

Abstract

The smoke collection main body comprises a smoke collection shell and a flow guide assembly, the smoke collection shell is provided with a smoke collection cavity, a smoke suction port and a smoke exhaust port, the smoke suction port and the smoke exhaust port are communicated with the smoke collection cavity, the smoke exhaust port is used for being communicated with a smoke exhaust channel of the extractor hood, and the flow guide assembly is arranged in the smoke collection cavity. The smoke guide pipe is used for guiding smoke flowing in from the smoke suction port to the smoke exhaust port; the flow guide assembly comprises a first flow guide part and a second flow guide part which are arranged in a spaced mode, the first flow guide part is provided with a first flow guide face facing the smoke exhaust port, the second flow guide part is provided with a second flow guide face facing the first flow guide face and the smoke suction port, and noise transmitted out of the smoke exhaust channel can be reflected through the first flow guide face and the second flow guide face in sequence and then is transmitted to the smoke suction port. And the smoke is sprayed to the outside through the smoke suction port. According to the technical scheme, the situation that noise transmitted out of the smoke suction opening is too large can be improved, and noise generated when the whole extractor hood runs can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a smoke collecting body and a range hood using the smoke collecting body. Background Art

[0002] A range hood is an appliance installed above a kitchen stove. It can quickly extract the waste from stove combustion and the fumes that are harmful to the human body generated during cooking and discharge them outdoors to purify the kitchen environment. However, the range hoods in the related art generate too much noise during operation, resulting in a poor user experience when using the range hoods. Utility Model Content

[0003] The embodiments of the present application provide a smoke collecting body and a range hood, which can improve the situation where the noise transmitted from the smoke outlet is too loud, and are helpful to reduce the noise generated when the range hood is in operation.

[0004] In a first aspect, an embodiment of the present application provides a smoke collecting body, which is suitable for a range hood and includes a smoke collecting shell and a flow guide assembly;

[0005] The smoke collecting shell has a smoke collecting cavity and a smoke inlet and a smoke exhaust outlet respectively connected to the smoke collecting cavity, and the smoke exhaust outlet is used to be connected to the smoke exhaust channel of the range hood;

[0006] The guide assembly is arranged in the smoke collecting chamber and is used to guide the smoke flowing in from the smoking port to the smoke exhaust port; the guide assembly comprises a first guide member and a second guide member arranged at intervals, the first guide member has a first guide surface facing the smoke exhaust port, and the second guide member has a second guide surface facing the first guide surface and the smoking port;

[0007] The noise transmitted from the smoke exhaust channel can be reflected by the first guide surface and the second guide surface in sequence, and then emitted to the outside through the smoking port.

[0008] In some embodiments, along the height direction of the range hood, the second air guide member is disposed closer to the smoke exhaust port than the first air guide member.

[0009] In some embodiments, along the height direction of the range hood, the suction port is located between the second air guide member and the first air guide member.

[0010] In some embodiments, the smoke collecting body satisfies at least one of the following conditions:

[0011] Along the height direction, the projection of the smoke inlet on a horizontal plane is staggered from the projection of the smoke exhaust outlet on the same horizontal plane;

[0012] Along the height direction, the projection of the smoke exhaust port is located within the first guide surface;

[0013] Along the height direction, the projection of the smoking port is located within the second flow guiding surface;

[0014] Along the height direction, a projection of the first flow guide member on a horizontal plane partially overlaps with a projection of the second flow guide member on the same horizontal plane.

[0015] In some embodiments, the first guide member is tilted as a whole relative to the height direction, so that the first guide surface can have an angle with the height direction, and the noise transmitted from the smoke exhaust port is deflected to the second guide surface.

[0016] In some embodiments, the first flow guide comprises a flow guide portion and a reflection portion;

[0017] The guide portion has the first guide surface, the reflective portion is connected to the guide portion and has a reflective surface arranged at an angle to the first guide surface, and the reflective surface is used to reflect the noise part transmitted from the smoke exhaust channel into the smoke exhaust channel.

[0018] In some embodiments, the smoke collecting body further has a silencer cavity, the first flow guide is configured to form at least a portion of the cavity wall of the silencer cavity, and the first flow guide is provided with a sound absorbing hole connecting the smoke collecting cavity and the silencer cavity.

[0019] In some embodiments, the first flow guide member abuts against a cavity wall of the smoke collecting cavity, and a surface of the first flow guide member opposite to the first flow guide surface cooperates with the cavity wall of the smoke collecting cavity to enclose the silencing cavity.

[0020] In some embodiments, the smoke collecting shell includes an opening plate, the opening plate is provided with the smoking port, and the smoke collecting chamber includes a main body section and a gradually expanding section;

[0021] The main body section is connected to the smoke exhaust port, the gradually expanding section is connected to the smoke outlet and the main body section, the second guide surface and the opening plate have an angle, and cooperate to form a part of the gradually expanding section;

[0022] Wherein, along the flow direction of smoke flowing in from the smoking port, the flow area of ​​the gradually expanding section gradually increases.

[0023] In some of the embodiments, in a direction from front to rear of the range hood, the second air guide surface is inclined toward a direction close to the opening plate.

[0024] In some embodiments, the second flow guide member further has a transition surface and a third flow guide surface, and the transition surface is connected between the second flow guide surface and the third flow guide surface.

[0025] In some embodiments, the smoke collecting housing includes a first housing portion and a second housing portion;

[0026] The first housing portion is configured with the gradually expanding section and part of the main body section, and has the smoking port;

[0027] The second shell part is connected to the first shell part, forming the remaining part of the main body section, and has the smoke exhaust port;

[0028] Wherein, the second flow guide member and the first shell portion are separate structures or integrated components.

[0029] In some embodiments, the smoke collecting housing includes a first housing portion and a second housing portion;

[0030] The first housing portion is configured with the gradually expanding section and part of the main body section, and has the smoking port;

[0031] The second shell part is connected to the first shell part, forming the remaining part of the main body section, and has the smoke exhaust port;

[0032] Wherein, the shell wall of the second shell portion is formed with a transition surface and a third flow guide surface, and the transition surface is connected between the second flow guide surface and the third flow guide surface.

[0033] In some embodiments, the smoke collecting housing includes a first housing portion and a second housing portion;

[0034] The first housing portion is configured with the gradually expanding section and part of the main body section, and has the smoking port;

[0035] The second shell part is connected to the first shell part, forming the remaining part of the main body section and having the smoke exhaust port, and the shell wall of the second shell part is formed with a third guide surface;

[0036] The guide assembly further includes a third guide member, the third guide member having a transition surface, and the transition surface is connected between the second guide surface and the third guide surface.

[0037] In some embodiments, the transition surface is a curved surface or an inclined surface; and / or,

[0038] The shell wall of the second shell portion forms a smoke exhaust surface, and the third guide surface smoothly transitions to the smoke exhaust surface.

[0039] In some embodiments, at least one of the first flow guide and the second flow guide includes a silencer, and the silencer is used to reduce noise flowing through the smoke collecting chamber.

[0040] In some embodiments, the sound-absorbing member includes sound-absorbing cotton; and / or,

[0041] The muffler comprises a perforated plate portion and a muffler portion, and the muffler portion is arranged between the perforated plate portion and the inner wall of the smoke collecting shell.

[0042] In a second aspect, an embodiment of the present application provides a range hood, the range hood comprising the smoke collecting body and a range hood body as described above;

[0043] The range hood body comprises a flue assembly and a fan assembly. The flue assembly is connected to the smoke collecting shell and has a smoke exhaust passage connected to the smoke exhaust port. The fan assembly is connected to the flue assembly and has a fan chamber connected to the smoke exhaust passage.

[0044] Based on the smoke collecting body and range hood of the embodiment of the present application, the noise can utilize multiple reflections to reduce the energy of the noise on the basis of being reflected successively by the first guide surface and the second guide surface, and the multiple reflections can also extend the propagation path of the noise, thereby helping to reduce the energy of the noise by extending the propagation path. In summary, through the cooperation of the first guide surface and the second guide surface, the noise transmitted from the smoke exhaust channel can be effectively reduced, so that the energy of the noise can be effectively reduced and then emitted to the outside through the smoke outlet, which helps to reduce the impact of the noise emitted to the outside from the smoke exhaust outlet on the user, thereby greatly improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0046] Figure 1 This is a schematic structural diagram of an embodiment of a range hood of the present application;

[0047] Figure 2 for Figure 1 A schematic diagram of the structure of the central range hood when it is in working state;

[0048] Figure 3 for Figure 1 Schematic diagram of the exploded structure of the mid-range hood;

[0049] Figure 4A cross-sectional schematic diagram of an embodiment of the range hood of the present application;

[0050] Figure 5 for Figure 4 A partial enlarged view of the middle A;

[0051] Figure 6 for Figure 5 A schematic structural diagram of the second flow guide member;

[0052] Figure 7 This is a structural schematic diagram of an embodiment of the second housing portion of the present application;

[0053] Figure 8 A cross-sectional schematic diagram of another embodiment of the range hood of the present application;

[0054] Fig. 9 for Figure 8 A partial enlarged view of point B in the middle.

[0055] Description of Figure Numbers:

[0056] 1. Range hood; 10. Range hood body; 11. Fan assembly; 111. Fan box; 111A. Fan cavity; 112. Fan; 12. Smoke duct assembly; 12A. Smoke exhaust passage; 121. Smoke duct shell; 14. Lifting drive assembly; 20. Smoke collecting body; 20A. Smoke collecting cavity; 20B. Smoke inlet; 20C. Smoke exhaust outlet; 20D. Gradually expanding section; 20E. Main section; 20F. Muffler cavity; 24. Smoke collecting shell; 241. First shell portion; 24 2. Second shell part; 2421. Smoke exhaust surface; 243. Opening plate; 25. Guide assembly; 251. First guide piece; 2511. First guide surface; 2512. Guide part; 2513. Reflection part; 2514. Reflection surface; 252. Second guide piece; 2521. Second guide surface; 2522. Transition surface; 2523. Third guide surface; 253. Silencer; 2531. Silencer cotton; 2532. Orifice plate part; 2533. Silencer part.

[0057] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0058] In order to make the objectives, technical solutions and advantages of the present application clearer, the following part will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0059] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0060] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0062] Please refer to Figure 1-Figure 2 The present application proposes a range hood 1, which is usually installed above a kitchen stove and can quickly extract waste burned by the stove and fumes harmful to the human body generated during cooking and discharge them outdoors to purify the kitchen environment.

[0063] Among them, the range hood 1 can be divided into multiple types, common types include top-suction range hoods, side-suction range hoods and cross-over range hoods, and this embodiment does not specifically limit the type of the range hood 1.

[0064] It is understandable that the top suction range hood is also commonly referred to as the European-style range hood 1, which is usually installed above the ceiling of the kitchen and sucks the oil smoke upwards through the suction force of the top. Compared with the top suction range hood, the side suction range hood is closer to the stove and can suck the oil smoke from the side in time during the cooking process, thereby more effectively preventing the oil smoke from escaping and also improving the efficiency of oil smoke extraction. The crossover range hood is a top-side suction combined range hood, which combines the advantages of top suction and side suction, and can absorb oil smoke from the side and top at the same time, with a higher efficiency of oil smoke extraction.

[0065] See also Figure 3In some embodiments, the range hood 1 includes a range hood body 10 and a smoke collecting body 20. The range hood body 10 includes a flue assembly 12 and a fan assembly 11. The flue assembly 12 is connected between the fan assembly 11 and the smoke collecting body 20. The flue assembly 12 includes a flue shell 121. The flue shell 121 has a smoke exhaust passage 12A. The smoke collecting body 20 has a smoke collecting chamber 20A and a smoke exhaust port 20C connected to the smoke collecting chamber 20A and a smoke exhaust port 20B respectively. The smoke exhaust port 20C is connected to the smoke exhaust passage 12A. The fan assembly 11 may include a fan box 111 and a fan 112. The fan box 111 has a fan chamber 111A connected to the smoke exhaust passage 12A. The fan 112 is arranged in the fan chamber 111A. In this way, the exhaust efficiency of oil smoke can be improved through the operation of the fan 112. It is understandable that the smoke collecting chamber 20A, the interior of the smoke exhaust channel 12A and the fan chamber 111A are connected in sequence, so that the smoke inhaled from the smoking port 20B can flow through the smoke collecting chamber 20A, the interior of the smoke exhaust channel 12A and the fan chamber 111A in sequence and then flow out to the outside.

[0066] The noise generated by the range hood 1 in the related art during operation is too loud, resulting in a poor user experience when using the range hood 1. The inventor discovered during the research and development process that part of the noise generated by the range hood 1 is the noise generated by the fan 112 during operation, and this part of the noise will be directly transmitted to the smoke outlet 20B through the smoke exhaust channel 12A, and then transmitted to the outside through the smoke outlet 20B. The smoke outlet 20B of the conventional range hood 1 will directly face the user or be close to the user, which will cause this part of the noise to have a greater impact on the user, thereby affecting the user's experience.

[0067] Based on this, in order to solve the technical problems found by the above inventors during the research and development process, please refer to Figure 4 Specifically, the smoke collecting body 20 of this embodiment includes a smoke collecting shell 24 and a flow guide component 25 .

[0068] The smoke collecting shell 24 can collect and gather smoke, wherein the smoke collecting shell 24 can be made of metal. Exemplarily, the smoke collecting body 20 can be stamped and welded from A3 cold-rolled steel plate (or stainless steel plate), and the surface of the smoke collecting body 20 can be treated with phosphating and spraying to reduce the probability of rusting of the smoke collecting body 20, thereby allowing the range hood 1 to have a longer service life. Not only that, when the surface of the smoke collecting body 20 is treated with phosphating and spraying, the smoke collecting body 20 can also be made smooth and easy to clean. Of course, the smoke collecting shell 24 can also be a plastic structure, which is not limited in this embodiment. The smoke collecting shell 24 has a smoke collecting chamber 20A, a smoke inlet 20B and a smoke outlet 20C, and the smoke collecting shell 24 is connected to the flue shell 121.

[0069] The guide assembly 25 is disposed in the smoke collecting chamber 20A, and is used to guide the smoke flowing in from the smoke inlet 20B to the smoke outlet 20C. It can be understood that the arrangement of the guide assembly 25 can make the smoke flow more smoothly, so as to better suppress the formation of vortex, thereby reducing the noise generated by the range hood 1 during operation to a certain extent, and at the same time can reduce the flow loss of the smoke, and improve the smoke exhaust efficiency of the range hood 1.

[0070] The guide assembly 25 includes a first guide 251 and a second guide 252. Both the first guide 251 and the second guide 252 may include at least one of a silencer 253, a metal part, and a plastic part, which is not limited in this embodiment. The first guide 251 and the second guide 252 are arranged in the smoke collecting chamber 20A at intervals, so that the different arrangement positions of the two guides can be used to enhance the guiding effect of the guide assembly 25 on the smoke in the smoke collecting chamber 20A. It should be noted that the guide assembly 25 of this embodiment may not be limited to only including the first guide 251 and the second guide 252, but may further include a third guide, etc., and along the transmission direction of the noise, the third guide may be arranged upstream of the first guide 251, which is not limited in this embodiment.

[0071] The first guide member 251 has a first guide surface 2511, and the first guide surface 2511 faces the smoke outlet 20C. The second guide member 252 has a second guide surface 2521, and the second guide surface 2521 faces the first guide surface 2511 and the smoke outlet 20B. In this way, the noise transmitted from the smoke exhaust channel 12A can be reflected by the first guide surface 2511 and the second guide surface 2521 in sequence, and then emitted to the outside through the smoke outlet 20B.

[0072] It can be understood that after the noise is reflected successively by the first guide surface 2511 and the second guide surface 2521, multiple reflections can be used to reduce the energy of the noise, and multiple reflections can also extend the propagation path of the noise, so that the extension of the propagation path also helps to reduce the energy of the noise. In summary, through the cooperation of the first guide surface 2511 and the second guide surface 2521, the noise transmitted from the smoke exhaust channel 12A can be effectively reduced, so that the energy of the noise can be effectively reduced and then emitted to the outside through the smoking port 20B, which helps to reduce the impact of the noise emitted to the outside by the smoke exhaust port 20C on the user, thereby greatly improving the user experience.

[0073] Please refer to Figure 4-Figure 5In some embodiments, at least one of the first flow guide 251 and the second flow guide 252 includes a silencer 253, that is, the first flow guide 251 may include the silencer 253, the second flow guide 252 may include the silencer 253, or both the first flow guide 251 and the second flow guide 252 may include the silencer 253.

[0074] The silencer 253 is used to reduce the noise flowing through the smoke collecting chamber 20A. In this way, the silencer 253 can be used to further reduce the energy of the noise transmitted from the smoke exhaust channel 12A, so that the energy of the noise can be effectively reduced and then emitted to the outside through the smoke outlet 20B, thereby further reducing the noise generated by the range hood 1 during operation.

[0075] See also Figure 5 Furthermore, the silencer 253 may include silencer cotton 2531, and the silencer cotton 2531 may be attached to the inner wall of the smoke collecting shell 24. It is understood that the fluffy porous structure in the silencer cotton 2531 can effectively absorb the noise generated by the smoke, and the silencer cotton 2531 has good elasticity and is not easily damaged even if subjected to a large external force. In addition, the reduced weight of the silencer cotton 2531 is conducive to reducing the overall weight of the smoke collecting body 20.

[0076] See also Figure 5 Optionally, the muffler 253 may include a perforated plate portion 2532 and a muffler portion 2533. The perforated plate portion 2532 has a plurality of muffler holes, and the specific size and arrangement of the plurality of muffler holes can allow noise of certain frequency bands to enter the muffler portion 2533 in a targeted manner. For example, a smaller aperture can generally absorb noise with a higher frequency, while a larger aperture can absorb noise with a lower frequency. The muffler portion 2533 may be a muffler cotton 2531, or may be a mixture of the muffler cotton 2531 and a fiber cloth, and this embodiment does not limit this.

[0077] It is understandable that the orifice plate portion 2532 can filter out noise of a specific frequency, and enable the muffler portion 2533 to reduce the noise of the specific frequency. For example, high-frequency noise is relatively sharp and harsh to human hearing. Therefore, based on the screening of the orifice plate portion 2532, the muffler portion 2533 can specifically reduce high-frequency noise to prevent the range hood 1 from generating sharp and harsh noise during operation. In this way, the muffler portion 2533 does not need to absorb noise of all frequency bands, and can reduce noise of some frequencies that have a greater impact on human hearing. Therefore, the muffler portion 2533 does not need to use a more complex structure and material, which is conducive to reducing the cost of the muffler 253.

[0078] See also Figure 4In some embodiments, along the height direction of the range hood 1, the second air guide 252 is disposed closer to the smoke outlet 20C than the first air guide 251. It is understandable that there is a height difference between the second air guide 252 and the first air guide 251, and the second air guide 252 is disposed higher than the first air guide 251, that is, along the height direction, the smoke outlet 20C, the second air guide 252 and the first air guide 251 are disposed sequentially from top to bottom.

[0079] In this way, compared with the form in which the first guide member 251 is arranged closer to the smoke exhaust port 20C than the second guide member 252, the form of this embodiment can extend the path of the noise from the smoke exhaust port 20C to the first guide surface 2511. On this basis, it can also extend the path of the noise from the first guide surface 2511 to the second guide surface 2521, thereby further increasing the total path length of the noise transmitted from the smoke exhaust channel 12A to the smoking port 20B, thereby effectively reducing the energy of the noise.

[0080] Please continue reading Figure 4 Further, along the height direction of the range hood 1, the smoke outlet 20B is located between the second air guide 252 and the first air guide 251, that is, along the height direction, the smoke outlet 20C, the second air guide 252, the smoke outlet 20B and the first air guide 251 are arranged in sequence from top to bottom.

[0081] In this way, after the noise is transmitted from the high-position smoke exhaust port 20C, it will be transmitted to the low-position first guide member 251. After being reflected by the first guide surface 2511, it will be deflected by the first guide surface 2511 and shot toward the middle-position second guide surface 2521. After being reflected by the middle-position second guide surface 2521, it will be deflected by the second guide surface 2521 and shot toward the smoking port 20B, thereby effectively reducing the energy of the noise.

[0082] Of course, the present application is not limited thereto. In other embodiments, the smoke exhaust port 20C, the second guide member 252, the first guide member 251 and the smoking port 20B may be arranged in sequence along the height direction.

[0083] Please continue reading Figure 4 In some embodiments, the smoke collecting body 20 satisfies at least one of the following conditions:

[0084] In the height direction, the projection of the smoke inlet 20B on the horizontal plane is staggered from the projection of the smoke outlet 20C on the same horizontal plane. In this way, the probability of the noise transmitted from the smoke exhaust passage 12A being directly emitted outward through the smoke inlet 20B along the height direction can be reduced, thereby ensuring the noise reduction effect of the range hood 1.

[0085] In the height direction, the projection of the smoke exhaust port 20C is located in the first guide surface 2511. In this way, the noise transmitted from the smoke exhaust channel 12A can be directed to the first guide surface 2511 as much as possible and deflected by the first guide surface 2511 to be directed to the second guide surface 2521, thereby effectively ensuring that the transmission path of the noise transmitted from the smoke exhaust channel 12A is longer, so as to better reduce the energy of the noise.

[0086] In the height direction, the projection of the inhalation port 20B is located inside the second guide surface 2521. In this way, the smoke flowing from the inhalation port 20B can be guided by the second guide surface 2521 as much as possible, which helps to improve the flow smoothness of the smoke and further reduce the probability of vortex.

[0087] In the height direction, the projection of the first guide member 251 on the horizontal plane partially overlaps with the projection of the second guide member 252 on the same horizontal plane. In this way, the smoke flowing from the smoking port 20B can be guided by the first guide surface 2511 or the second guide surface 2521 as much as possible, which helps to improve the flow smoothness of the smoke and further reduce the probability of vortex generation.

[0088] See also Figure 4 In some embodiments, the first guide member 251 can be a plate-shaped structure as a whole, and the first guide member 251 can be inclined relative to the height direction as a whole, so that the first guide surface 2511 can have an angle with the height direction, and deflect the noise transmitted from the smoke exhaust port 20C to the second guide surface 2521.

[0089] Based on this, this embodiment can utilize the inclined placement of the first guide member 251 so that the first guide surface 2511 has an angle with the height direction. In this way, the structure of the first guide member 251 is relatively simple, and there is no need to design an overly complex structure to make the first guide surface 2511 have an angle with the height direction.

[0090] In order to further enhance the noise reduction effect of the first guide member 251, please refer to Figure 4-Figure 5 In some embodiments, the smoke collecting body 20 further has a silencer cavity 20F, and the first flow guide 251 is configured to form at least a portion of the cavity wall of the silencer cavity 20F. It can be understood that the silencer cavity 20F can be formed by directly forming the silencer cavity 20F inside the first flow guide 251, or the first flow guide 251 and the cavity wall of the smoke collecting cavity 20A cooperate to enclose the silencer cavity 20F. This embodiment does not limit this.

[0091] The first guide member 251 is provided with a sound-absorbing hole, which connects the smoke collecting chamber 20A and the silencer chamber 20F. In this way, the noise in the smoke collecting chamber 20A can enter the silencer chamber 20F through the sound-absorbing hole, so that the noise can be reflected in the silencer chamber 20F, and the energy of the noise can be reduced by using the cavity wall of the silencer chamber 20F, thereby further improving the noise reduction effect of the first guide member 251.

[0092] It can be understood that if the first guide member 251 includes the above-mentioned orifice plate portion 2532 and the silencer portion 2533, the orifice plate portion 2532 is formed with a first guide surface 2511, and the silencer holes on the orifice plate portion 2532 are the sound-absorbing holes in this embodiment, and the silencer cavity 20F can be formed by the back side of the silencer portion 2533 and the cavity wall of the smoke collecting cavity 20A, and this embodiment does not limit this.

[0093] Please refer to Figure 4-Figure 5 Furthermore, the first guide member 251 abuts against the cavity wall of the smoke collecting chamber 20A, and the surface of the first guide member 251 opposite to the first guide surface 2511 and the cavity wall of the smoke collecting chamber 20A cooperate to enclose a silencer cavity 20F. It can be understood that the noise emitted into the silencer cavity 20F through the sound-absorbing hole will be repeatedly reflected by the surface of the first guide member 251 opposite to the first guide surface 2511 and the cavity wall of the smoke collecting chamber 20A, so as to better reduce the energy of the noise and achieve the noise reduction effect of the range hood 1.

[0094] In this way, the silencer chamber 20F can be formed by using a part of the surface of the first guide member 251 and a part of the cavity wall of the smoke collecting cavity 20A, so that the structure of the first guide member 251 is simple and the silencer chamber 20F is easy to construct.

[0095] Please refer to Figure 4-Figure 5 In some embodiments, the smoke collecting shell 24 includes an opening plate 243, and the opening plate 243 is provided with a smoke outlet 20B. The smoke collecting chamber 20A includes a main body section 20E and a gradually expanding section 20D that are connected to each other, wherein the gradually expanding section 20D is connected to the smoke outlet 20B, and the main body section 20E is connected to the smoke outlet 20C. It can be understood that the smoke flowing from the smoke outlet 20B will first flow to the gradually expanding section 20D, then flow from the gradually expanding section 20D to the main body section 20E, and finally flow from the main body section 20E to the smoke outlet 20C.

[0096] Specifically, the second flow guide surface 2521 and the opening plate 243 have an angle, and cooperate to form a part of the gradually expanding section 20D, and the flow area of ​​the gradually expanding section 20D gradually increases along the flow direction of the smoke flowing in from the smoke outlet 20B. In this way, on the one hand, the smoke can improve its own flow efficiency in the smoke collecting chamber 20A on the basis of the setting of the gradually increasing flow area of ​​the gradually expanding section 20D, which helps to improve the smoke exhaust efficiency, and on the other hand, along the direction opposite to the flow direction of the smoke flowing in from the smoke outlet 20B, the flow area of ​​the gradually expanding section 20D gradually decreases, which can increase the difficulty of noise transmission from the gradually expanding section 20D to the smoke outlet 20B, so as to more effectively reduce the situation where the noise transmitted from the smoke outlet 20B is too loud, thereby improving the noise reduction effect of the whole range hood 1.

[0097] Please refer to Figure 4-Figure 5 Furthermore, in the direction from front to back of the range hood 1, the second flow guide surface 2521 is inclined toward the direction close to the opening plate 243. In this way, the flow area at the connection between the gradually expanding section 20D and the main section 20E can be made smaller, which helps to increase the difficulty of noise transmission from the main section 20E to the gradually expanding section 20D, thereby improving the situation where the noise transmitted from the suction port 20B is too loud.

[0098] Of course, in other embodiments, the opening plate 243 may be inclined toward the second guide member 252 in the direction from front to back of the range hood 1, so that the flow area at the connection between the gradually expanding section 20D and the main section 20E is smaller, and this embodiment does not impose any limitation on this.

[0099] On the basis that the second guide surface 2521 is inclined toward the direction close to the opening plate 243 in the direction from the front to the rear of the range hood 1, Figure 6 In some embodiments, the second guide member 252 further has a transition surface 2522 and a third guide surface 2523, and the transition surface 2522 is connected between the second guide surface 2521 and the third guide surface 2523. In this embodiment, the transition surface 2522 is provided so that the smoke can flow along the transition surface 2522 to the third guide surface 2523 after being guided by the second guide surface 2521, so that the smoke flows more smoothly, further reducing the probability of vortex generation and improving the smoke exhaust efficiency of the range hood 1.

[0100] See also Figure 5 Furthermore, the smoke collecting housing 24 includes a first housing portion 241 and a second housing portion 242 connected to each other. The first housing portion 241 is configured with a gradually expanding section 20D and a portion of a main section 20E, and the first housing portion 241 has a smoking port 20B, that is, the first housing portion 241 includes an opening plate 243. The second housing portion 242 is configured with the remaining portion of the main section 20E, and the second housing portion 242 has a smoking port 20B.

[0101] The second flow guide 252 and the first housing portion 241 are separate structures, so that the second flow guide 252 and the first housing portion 241 can be formed separately and then connected to reduce the manufacturing difficulty. Alternatively, the second flow guide 252 and the first housing portion 241 are integrated components, so that the second flow guide 252 and the first housing portion 241 can be manufactured in a one-time molding form, thereby reducing the assembly steps of the two and improving the connection strength of the two.

[0102] See also Figure 7 In other embodiments, the smoke collecting housing 24 includes a first housing portion 241 and a second housing portion 242 connected to each other. The first housing portion 241 is configured with a gradually expanding section 20D and a portion of a main section 20E, and the first housing portion 241 has a smoking port 20B, that is, the first housing portion 241 includes an opening plate 243. The second housing portion 242 is configured with the remaining portion of the main section 20E, and the second housing portion 242 has a smoking port 20B.

[0103] The shell wall of the second shell portion 242 is formed with a transition surface 2522 and a third flow guide surface 2523, and the transition surface 2522 is connected between the second flow guide surface 2521 and the third flow guide surface 2523. Thus, on the one hand, by setting the transition surface 2522, the smoke can flow along the transition surface 2522 to the third flow guide surface 2523 after being guided by the second flow guide surface 2521, so that the smoke flows more smoothly, further reducing the probability of vortex generation and improving the smoke exhaust efficiency of the range hood 1; on the other hand, the shell wall of the second shell portion 242 can be used to directly form the transition surface 2522 and the third flow guide surface 2523, which is convenient for manufacturing and forming.

[0104] In some other embodiments, the smoke collecting housing 24 includes a first housing portion 241 and a second housing portion 242 connected to each other. The first housing portion 241 is configured with a gradually expanding section 20D and a portion of a main section 20E, and the first housing portion 241 has a smoking port 20B, that is, the first housing portion 241 includes an opening plate 243. The second housing portion 242 is configured with the remaining portion of the main section 20E, and the second housing portion 242 has a smoking port 20B, and the housing wall of the second housing portion 242 is formed with a third guide surface 2523.

[0105] The guide assembly 25 further includes a third guide member (not shown in the figure), which has a transition surface 2522, and the transition surface 2522 is connected between the second guide surface 2521 and the third guide surface 2523. In this way, the smoke can flow more smoothly, further reduce the probability of vortex generation, and improve the smoke exhaust efficiency of the range hood 1.

[0106] Please refer to Figure 5-Figure 6In some embodiments, the transition surface 2522 may be a curved surface or an inclined surface so that the smoke flows more smoothly through the transition surface 2522 , thereby further reducing the probability of vortex generation and improving the smoke exhaust efficiency of the range hood 1 .

[0107] Please refer to Figure 5-Figure 6 In some embodiments, the shell wall of the second shell portion 242 is formed with a smoke exhaust surface 2421, and the third guide surface 2523 smoothly transitions to the smoke exhaust surface 2421. In this way, the probability of the smoke hitting the smoke exhaust surface 2421 when flowing out from the third guide surface 2523 and generating aerodynamic noise can be reduced, and the noise reduction effect of the range hood 1 is effectively improved.

[0108] In some embodiments, the second shell portion 242 is sleeved on the flue shell 121, and the range hood 1 also includes a lifting drive assembly 14, which is installed on the fan box 111 and is transmission-connected to the second shell portion 242 of the smoke collecting shell 24 so as to drive the second shell portion 242 to move relative to the flue shell 121.

[0109] Thus, when the range hood 1 is working, the lifting drive assembly 14 can drive the second housing portion 242 to descend, and the smoke collecting body 20 can be located below the user's breathing area, so that the smoke collecting body 20 can be prevented from being higher than the user's breathing area and causing the user to inhale oil smoke, and the diffusion path of the oil smoke can be reduced, thereby improving the situation of oil smoke escaping. After the range hood 1 has finished absorbing oil smoke, the lifting drive assembly 14 can drive the second housing portion 242 to rise, so that the smoke collecting body 20 does not occupy too much space under the kitchen cabinet when the range hood 1 is not in working state.

[0110] Please refer to Figure 8-Figure 9 In some embodiments, the first flow guide 251 includes a flow guide portion 2512 and a reflection portion 2513 connected to each other, the flow guide has a first flow guide surface 2511 , and the reflection portion 2513 has a reflection surface 2514 .

[0111] Among them, the guide portion 2512 can be directly set at an angle with the reflecting portion 2513 to form a wedge structure, so that the first guide surface 2511 and the reflecting surface 2514 are set at an angle; or, the reflecting portion 2513 directly forms an inclined reflecting surface 2514, so that the first guide surface 2511 and the reflecting surface 2514 are set at an angle, and this embodiment does not impose any restrictions on this.

[0112] The reflective surface 2514 is used to reflect part of the noise transmitted from the smoke exhaust channel 12A into the smoke exhaust channel 12A, so that part of the noise can be retained in the smoke exhaust channel 12A and cannot be emitted outward through the smoke outlet 20B, so as to improve the situation where the noise transmitted from the smoke outlet 20B is too loud. In addition, the first guide surface 2511 and the reflective surface 2514 set at an angle can disperse the noise transmitted from the smoke exhaust channel 12A, so that the noise exists in two parts that are emitted to the first guide member 251 at different angles, so that the situation of reverberation caused by emitting the same angle to the first guide member 251 can be avoided, and the noise of the whole range hood 1 can be effectively reduced.

[0113] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0114] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A smoke collecting body, characterized in that: Suitable for range hoods, including: A smoke collecting shell having a smoke collecting chamber and a smoke inlet and a smoke exhaust outlet respectively connected to the smoke collecting chamber, wherein the smoke exhaust outlet is used to be connected to a smoke exhaust passage of the range hood; and A flow guide assembly is arranged in the smoke collecting chamber and is used to guide the smoke flowing in from the smoking port to the smoke exhaust port; the flow guide assembly comprises a first flow guide member and a second flow guide member arranged at intervals, the first flow guide member has a first flow guide surface facing the smoke exhaust port, and the second flow guide member has a second flow guide surface facing the first flow guide surface and the smoking port; The noise transmitted from the smoke exhaust channel can be reflected by the first guide surface and the second guide surface in sequence, and then emitted to the outside through the smoking port.

2. The smoke collecting body according to claim 1, characterized in that: Along the height direction of the range hood, the second air guide member is arranged closer to the smoke exhaust port than the first air guide member.

3. The smoke collecting body according to claim 2, characterized in that: Along the height direction of the range hood, the suction port is located between the second air guide member and the first air guide member.

4. The smoke collecting body according to claim 2, characterized in that: The smoke collecting body meets at least one of the following conditions: Along the height direction, the projection of the smoke inlet on a horizontal plane is staggered from the projection of the smoke exhaust outlet on the same horizontal plane; Along the height direction, the projection of the smoke exhaust port is located within the first guide surface; Along the height direction, the projection of the smoking port is located within the second flow guiding surface; Along the height direction, a projection of the first flow guide member on a horizontal plane partially overlaps with a projection of the second flow guide member on the same horizontal plane.

5. The smoke collecting body according to claim 2, characterized in that: The first guide member is tilted as a whole relative to the height direction, so that the first guide surface can have an angle with the height direction, and the noise transmitted from the smoke exhaust port is deflected to be emitted to the second guide surface.

6. The smoke collecting body according to claim 2, characterized in that: The first flow guide comprises: a flow guide portion having the first flow guide surface; and The reflecting part is connected to the guide part and has a reflecting surface arranged at an angle with the first guide surface, and the reflecting surface is used to reflect the noise part transmitted from the smoke exhaust channel into the smoke exhaust channel.

7. The smoke collecting body according to claim 2, characterized in that: The smoke collecting body further comprises a silencer cavity, the first flow guide is configured to form at least a part of the cavity wall of the silencer cavity, and the first flow guide is provided with a sound absorbing hole connecting the smoke collecting cavity and the silencer cavity.

8. The smoke collecting body according to claim 7, characterized in that: The first flow guide member abuts against the cavity wall of the smoke collecting cavity, and the surface of the first flow guide member opposite to the first flow guide surface cooperates with the cavity wall of the smoke collecting cavity to enclose the muffler cavity.

9. The smoke collecting body according to claim 2, characterized in that: The smoke collecting shell comprises an opening plate, the opening plate is provided with the smoking port, and the smoke collecting cavity comprises: a main body section, connected to the smoke exhaust port; and A gradually expanding section is connected to the smoking port and the main section, the second guide surface and the opening plate have an included angle and cooperate to form a part of the gradually expanding section; Wherein, along the flow direction of smoke flowing in from the smoking port, the flow area of ​​the gradually expanding section gradually increases.

10. The smoke collecting body according to claim 9, characterized in that: In the direction from front to rear of the range hood, the second air guide surface is inclined toward a direction close to the opening plate.

11. The smoke collecting body according to claim 10, characterized in that: The second flow guide member further has a transition surface and a third flow guide surface, and the transition surface is connected between the second flow guide surface and the third flow guide surface.

12. The smoke collecting body according to claim 11, characterized in that: The smoke collecting shell comprises: A first housing portion, which forms the gradually expanding section and part of the main body section and has the smoking port; and A second shell part, connected to the first shell part, forming the remaining part of the main body section and having the smoke exhaust port; Wherein, the second flow guide member and the first shell portion are separate structures or integrated components.

13. The smoke collecting body according to claim 10, characterized in that: The smoke collecting shell comprises: A first housing portion, which forms the gradually expanding section and part of the main body section and has the smoking port; and A second shell part, connected to the first shell part, forming the remaining part of the main body section and having the smoke exhaust port; Wherein, the shell wall of the second shell portion is formed with a transition surface and a third flow guide surface, and the transition surface is connected between the second flow guide surface and the third flow guide surface.

14. The smoke collecting body according to claim 10, characterized in that: The smoke collecting shell comprises: A first housing portion, which forms the gradually expanding section and part of the main body section and has the smoking port; and A second shell part is connected to the first shell part, forms the remaining part of the main body section, and has the smoke exhaust port, and a shell wall of the second shell part forms a third flow guide surface; The flow guide component further includes a third flow guide member, wherein the third flow guide member has a transition surface, and the transition surface is connected between the second flow guide surface and the third flow guide surface.

15. The smoke collecting body according to any one of claims 12 to 14, characterized in that: The transition surface is a curved surface or an inclined surface; and / or, The shell wall of the second shell portion forms a smoke exhaust surface, and the third guide surface smoothly transitions to the smoke exhaust surface.

16. The smoke collecting body according to any one of claims 1 to 14, characterized in that: At least one of the first flow guide and the second flow guide includes a silencer, and the silencer is used to reduce noise flowing through the smoke collecting chamber.

17. The smoke collecting body according to claim 16, characterized in that: The sound-absorbing member includes sound-absorbing cotton; and / or, The muffler comprises a perforated plate portion and a muffler portion, and the muffler portion is arranged between the perforated plate portion and the inner wall of the smoke collecting shell.

18. A range hood, characterized in that: include: The smoke collecting body according to any one of claims 1 to 17; as well as The range hood body comprises a flue assembly and a fan assembly, wherein the flue assembly is connected to the smoke collecting shell and has a smoke exhaust passage connected to the smoke exhaust port, and the fan assembly is connected to the flue assembly and has a fan cavity connected to the smoke exhaust passage.

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