Shell assembly and range hood

Abstract

The shell assembly comprises a smoke collecting shell and a smoke discharging shell, the smoke collecting shell is provided with a smoke collecting cavity and a smoke sucking opening communicating with the smoke collecting cavity, the smoke discharging shell is connected with the smoke collecting shell and provided with a smoke discharging channel, and the smoke discharging channel is provided with a communicating opening used for communicating with the smoke collecting cavity; smoke sequentially passes through the smoke suction port and the smoke collection cavity and enters the smoke exhaust channel through the communication port, and the projections of the communication port and the smoke suction port on the same horizontal plane are staggered in the height direction of the range hood. According to the technical scheme, the noise generated in the operation process of the range hood can be reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a shell assembly and a range hood using the shell assembly. 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 shell assembly and a range hood, which can reduce the noise generated during the operation of the range hood and improve the user experience.

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

[0005] The smoke collecting shell has a smoke collecting cavity and a smoke inlet connected to the smoke collecting cavity. The smoke exhaust shell is connected to the smoke collecting shell and has a smoke exhaust passage. The smoke exhaust passage has a connecting opening for connecting to the smoke collecting cavity. The smoke passes through the smoke inlet, the smoke collecting cavity and the connecting opening in sequence into the smoke exhaust passage.

[0006] Wherein, along the height direction of the range hood, the projections of the connecting port and the suction port on the same horizontal plane are staggered.

[0007] In some embodiments, along the front-to-back direction of the range hood, the smoke intake port is spaced apart from the smoke exhaust passage and is located in front of the smoke exhaust passage.

[0008] In some embodiments, the smoke exhaust channel extends continuously along the height direction of the range hood, and is staggered as a whole with the projection of the smoke outlet on the same horizontal plane.

[0009] In some embodiments, along the front-to-back direction of the range hood, the length of the communication port is L1, and the distance from the rear side wall of the smoke collecting shell to the rear side wall of the smoke exhaust shell is L2;

[0010] Wherein, the distance from the rear edge of the smoking port to the rear side wall of the smoke exhaust shell is L3, and satisfies the condition: 1.05×L1+L2≤L3≤1.5×L1+L2; and / or,

[0011] The distance from the front edge of the smoking port to the rear side wall of the smoke exhaust shell is L4, and satisfies the condition: 2.1×L1+L2≤L4≤2.2×L1+L2.

[0012] In some embodiments, the smoke exhaust housing includes a flue housing and a fan housing;

[0013] The flue shell comprises a bottom channel, a middle channel and a top channel connected in sequence, the bottom channel, the middle channel and the top channel are connected in sequence to cooperate to form the smoke exhaust channel, and the bottom channel is connected to the smoke collecting shell;

[0014] The fan housing is connected to the top channel and has a fan cavity communicated with the smoke exhaust channel, and the fan cavity is used to accommodate the fan of the range hood;

[0015] Wherein, the flow area of ​​the top channel and the flow area of ​​the bottom channel are both larger than the flow area of ​​the middle channel.

[0016] In some embodiments, the bottom channel can be raised and lowered relative to the middle channel, and / or the middle channel can be raised and lowered relative to the top channel, so as to adjust the height of the smoke collecting shell.

[0017] In some embodiments, the flue shell has a guide flue, and the shell assembly further includes a flow-rectifying member, which is arranged inside the intermediate channel and connected to the inner wall of the intermediate channel, and the flow-rectifying member at least forms a first flow-guiding section, or the flow-rectifying member and the intermediate channel at least jointly form a first flow-guiding section; the flow-rectifying member also forms a second flow-guiding section, or the flow-rectifying member and the intermediate channel jointly form a second flow-guiding section, or a section of the intermediate channel where the flow-rectifying member is not provided is the second flow-guiding section;

[0018] Wherein, the guide flue comprises the first guide section and the second guide section, the first guide section is connected to the second guide section, and the flow area of ​​the first guide section is larger than the flow area of ​​the second guide section.

[0019] In some of the embodiments, the fairing is arranged on the inner wall of the middle channel, or the fairing is arranged on the inner wall of a part of the middle channel.

[0020] In some embodiments, along the front-to-rear direction of the range hood, the distance from the center line of the oil suction port to the rear side wall of the smoke exhaust shell is L5, and the distance from the center line of the external burner to the rear side wall of the smoke exhaust shell is L6;

[0021] Among them, the condition is satisfied: 0.8×L6≤L5≤1.2×L6.

[0022] In some embodiments, along the front-to-back direction of the range hood, the distance from the front edge of the inhalation port to the rear side wall of the smoke exhaust shell is L4, and the distance from the rear edge of the inhalation port to the rear side wall of the smoke exhaust shell is L3;

[0023] Among them, the condition is satisfied: L5 = L3 + 0.5 × (L4 - L3).

[0024] In some embodiments, the smoke collecting shell includes a shell body and an opening plate, and the shell body is connected to the smoke exhaust shell;

[0025] The opening plate is connected to the shell body and cooperates with the shell body to enclose the smoke collecting chamber, and the smoking port is arranged on the opening plate;

[0026] Wherein, in the direction from front to rear of the range hood, the opening plate is arranged tilted in a direction away from the smoke exhaust shell.

[0027] In some embodiments, the angle between the opening plate and the horizontal plane is α, which satisfies the condition: 0°<α≤45°.

[0028] In some embodiments, along the height direction of the range hood, the height from the rear edge of the smoke outlet to the external stove is H1, the height from the front edge of the smoke outlet to the stove is H2, and the height from the bottom of the smoke collecting shell to the external stove is H3;

[0029] Among them, the condition is satisfied: H3≤H1+0.5×(H2-H1)≤2.4×H3.

[0030] In some embodiments, the housing assembly further includes a first flow guide and a second flow guide, the first flow guide and the second flow guide are arranged in the smoke collecting chamber at intervals, and are both used to guide the smoke flowing into the smoking port to the connecting port, the first flow guide has a first flow guide surface facing the connecting port, and the second flow guide has a second flow guide surface facing the first flow guide surface and the smoking port;

[0031] 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.

[0032] In some embodiments, along the height direction of the range hood, the second air guide member is arranged closer to the connecting port than the first air guide member.

[0033] 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.

[0034] In a second aspect, an embodiment of the present application provides a range hood, which includes a housing assembly and a fan as described above, wherein the fan is disposed in the smoke exhaust shell.

[0035] Based on the housing assembly and the range hood of the embodiment of the present application, by setting the connecting port to be staggered along the height direction of the range hood and the projection of the suction port on the same horizontal plane, the embodiment of the present application has at least the following technical effects:

[0036] On the one hand, it can prevent the noise in the smoke exhaust channel from being transmitted to the connecting port and then radiating outward directly through the smoking port, so that the noise is radiated outward from the smoking port after multiple reflections and energy reduction, which helps to reduce the noise energy transmitted outward from the smoking port and improve the noise reduction effect.

[0037] On the other hand, when smoke flows through the smoke exhaust channel, oil stains will inevitably be generated on the inner wall of the smoke exhaust channel, and the oil stains will drip downwards. The staggered setting of the connecting port and the smoking port in this embodiment can prevent the oil stains from dripping along the connecting port and directly dripping onto the smoking port, thereby ensuring the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] 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.

[0039] Figure 1 This is a schematic structural diagram of an embodiment of a range hood of the present application;

[0040] Figure 2 for Figure 1 A schematic diagram of the structure of the central range hood when it is in working state;

[0041] Figure 3 for Figure 1 Schematic diagram of the exploded structure of the mid-range hood;

[0042] Figure 4 A cross-sectional schematic diagram of an embodiment of the range hood of the present application;

[0043] Figure 5 for Figure 4 Schematic diagram of the coordination between the central range hood and the external stove and burner;

[0044] Figure 6 A cross-sectional schematic diagram of another embodiment of the range hood of the present application;

[0045] Figure 7for Figure 6 Schematic diagram of the connection between the middle channel and the rectifier;

[0046] Figure 8 It is a cross-sectional schematic diagram of another embodiment of the range hood of the present application.

[0047] Description of Figure Numbers:

[0048] 1. Range hood; 10. Range hood body; 11. Fan assembly; 111. Fan housing; 111A. Fan cavity; 112. Fan; 12. Flue assembly; 12A. Smoke exhaust passage; 12B. Flue guide; 12C. First guide section; 12D. Second guide section; 12E. Connecting port; 121. Flue housing; 1211. Bottom channel; 1212. Middle channel; 1213. Top channel; 122. Regulator; 13. Smoke exhaust housing; 20. Smoke collecting body; 20A. Smoke collecting cavity; 20B. Smoke inlet; 24. Smoke collecting housing; 241. Housing body; 242. Opening plate; 251. First guide piece; 2511. First guide surface; 252. Second guide piece; 2521. Second guide surface; 26. Oil cup; 30. Housing assembly; 2. Burner head; 3. Cooktop.

[0049] 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

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] See also Figure 1 The embodiment of 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.

[0055] 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.

[0056] It is understandable that the top suction range hood is also commonly known as the European-style range hood, which is usually installed above the ceiling of the kitchen and sucks the fumes 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 fumes from the side in time during the cooking process, thereby more effectively preventing the fumes from escaping and also improving the efficiency of absorbing fumes. 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 fumes from the side and top at the same time, with a higher efficiency of absorbing fumes.

[0057] Please refer to Figure 1-Figure 3 In 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, and 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, and the flue shell 121 has a smoke exhaust passage 12A; the smoke collecting body 20 includes a smoke collecting shell 24, and the smoke collecting shell 24 has a smoke collecting cavity 20A and a smoke inlet 20B connected to the smoke collecting cavity 20A; the fan assembly 11 may include a fan shell 111 and a fan 112, and the fan shell 111 has a fan cavity 111A connected to the smoke exhaust passage 12A, and the fan 112 is arranged in the fan cavity 111A, so that the exhaust efficiency of oil smoke can be improved through the operation of the fan 112.

[0058] It can be understood that the flue shell 121 is connected between the smoke collecting shell 24 and the smoke collecting body 20, and the smoke collecting chamber 20A, 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 flue shell 121 and the fan chamber 111A in sequence and then flow out to the outside.

[0059] The range hood 1 in the related art generates too much noise during operation, resulting in a poor user experience when using the range hood 1. The inventor discovered during the research and development process that the reason for the excessive noise is that the noise discharged from the smoke outlet 20B is too loud, which directly affects the user. Therefore, in order to solve this technical problem, please refer to Figure 3-Figure 4 This embodiment provides a housing assembly 30 , which includes the above-mentioned smoke collecting housing 24 and smoke exhaust housing 13 .

[0060] The smoke collecting shell 24 can be made of metal. For example, the smoke collecting shell 24 can be stamped and welded from A3 cold-rolled steel plate (or stainless steel plate), and the surface of the smoke collecting shell 24 can be treated by phosphating and spraying to reduce the probability of rusting of the smoke collecting shell 24, thereby allowing the range hood 1 to have a longer service life. Moreover, when the surface of the smoke collecting shell 24 is treated by phosphating and spraying, the smoke collecting shell 24 can also be 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.

[0061] The smoke exhaust shell 13 at least includes the above-mentioned flue shell 121. The smoke exhaust shell 13 can be made of metal or plastic, which is not limited in this embodiment. The smoke exhaust shell 13 is connected to the smoke collecting shell 24 and has a smoke exhaust channel 12A. The smoke exhaust channel 12A has a connecting port 12E, and the connecting port 12E is used to connect the smoke collecting chamber 20A. It can be understood that the smoke sucked by the range hood 1 will enter the smoke exhaust channel 12A through the smoke port 20B, the smoke collecting chamber 20A and the connecting port 12E in sequence.

[0062] In this embodiment, along the height direction of the range hood 1, the projections of the connecting port 12E and the smoke outlet 20B on the same horizontal plane are staggered. For example, along the front-to-back direction or the left-to-right direction of the range hood 1, the smoke outlet 20B is spaced from the connecting port 12E of the smoke exhaust passage 12A.

[0063] In this way, on the one hand, it can prevent the noise in the smoke exhaust channel 12A from propagating to the connecting port 12E and then radiating outward through the smoking port 20B, so that the noise can be radiated outward from the smoking port 20B after multiple reflections and energy reduction, which helps to reduce the noise energy propagating outward from the smoking port 20B and improve the noise reduction effect; on the other hand, when the smoke flows through the smoke exhaust channel 12A, oil stains will inevitably be generated on the inner wall of the smoke exhaust channel 12A, and the oil stains will drip downwards. The staggered setting of the connecting port 12E and the smoking port 20B in this embodiment can prevent the oil stains from dripping along the connecting port 12E and directly dripping to the smoking port 20B, thereby ensuring the user experience.

[0064] Please refer to Figure 4-Figure 5In some embodiments, along the front-to-rear direction of the range hood 1 , the smoke intake port 20B is spaced apart from the smoke exhaust passage 12A, and the smoke intake port 20B is located in front of the smoke exhaust passage 12A.

[0065] It is understandable that the front of the range hood 1 is generally the area where the user stands, and the stove burner 2 of the cooker is usually arranged close to the area where the user stands, so as to facilitate the user to cook. Therefore, in this embodiment, by arranging the position of the smoke outlet 20B in front of the smoke exhaust channel 12A, the smoke outlet 20B can be arranged closer to the burner 2, so that the smoke generated by the pot placed on the burner 2 can be better absorbed by the range hood 1 and enter the smoke collecting chamber 20A, effectively reducing the probability of smoke escaping and improving the smoke exhaust effect of the range hood 1.

[0066] Please refer to Figure 4-Figure 5 In some embodiments, the smoke exhaust passage 12A extends continuously along the height direction of the range hood 1, and is staggered as a whole with the projection of the smoke outlet 20B on the same horizontal plane.

[0067] On the basis that the smoke exhaust channel 12A extends continuously along the height direction, the smoke exhaust channel 12A itself has no abrupt bending part, so when the smoke flows in the smoke exhaust channel 12A, it can not only reduce the probability of the smoke forming vortices in the smoke exhaust channel 12A and generating noise, but also reduce the resistance encountered by the smoke when flowing, thereby improving the smoke exhaust efficiency of the range hood 1. At the same time, the staggered form of the smoke exhaust channel 12A as a whole and the smoking port 20B can further ensure that the noise in the smoke exhaust channel 12A will not be directly transmitted outward from the smoking port 20B, which is conducive to improving the noise reduction effect.

[0068] See also Figure 4 In some embodiments, along the front-to-back direction of the range hood 1, the length of the connecting port 12E is L1, the distance from the rear side wall of the smoke collecting shell 24 to the rear side wall of the smoke exhaust shell 13 is L2, and the distance from the rear edge of the smoking port 20B to the rear side wall of the smoke exhaust shell 13 is L3.

[0069] The condition is satisfied: 1.05×L1+L2≤L3≤1.5×L1+L2. In this way, the smoke collecting shell 24 can have a better smoke collecting effect while achieving a better noise reduction effect.

[0070] It is understandable that if L3 is less than 1.05×L1+L2, the connecting port 12E will be too close to the smoke outlet 20B in the front-to-back direction of the range hood 1, so that the noise in the smoke exhaust passage 12A is easily radiated directly outward from the smoke outlet 20B. If L3 is greater than 1.5×L1+L2, the opening area of ​​the smoke outlet 20B will be too small on the basis of the length from the front edge of the smoke outlet 20B to the rear side wall of the smoke exhaust shell 13 remaining unchanged, and the smoke collection effect of the smoke outlet 20B will be poor.

[0071] Exemplarily, the specific value of L3 can be 1.05×L1+L2, 1.1×L1+L2, 1.15×L1+L2, 1.2×L1+L2, 1.25×L1+L2, 1.3×L1+L2, 1.35×L1+L2, 1.4×L1+L2, 1.45×L1+L2 or 1.5×L1+L2, which is not limited in this embodiment.

[0072] See also Figure 4 In some embodiments, along the front-to-back direction of the range hood 1, the length of the connecting port 12E is L1, the distance from the rear side wall of the smoke collecting shell 24 to the rear side wall of the smoke exhaust shell 13 is L2, and the distance from the front edge of the smoking port 20B to the rear side wall of the smoke exhaust shell 13 is L4.

[0073] The condition is satisfied: 2.1×L1+L2≤L4≤2.2×L1+L2. In this way, the smoke collecting shell 24 has a better smoke collecting effect while preventing the user's head from interfering with or colliding with the smoke exhaust shell 13 during use.

[0074] It is understandable that, on the basis that the smoking port 20B is located in front of the smoke exhaust channel 12A, if L4 is greater than 2.2×L1+L2, the length of the smoke collecting shell 24 along the front-to-back direction of the range hood 1 will be too long, which will cause the smoke collecting shell 24 to be closer to the area where the user stands, so that the user's head is likely to interfere with and collide with the smoke exhaust shell 13 during use, affecting the user's experience. If L4 is less than 2.1×L1+L2, on the basis that the length from the rear edge of the smoking port 20B to the rear side wall of the smoke exhaust shell 13 remains unchanged, the opening area of ​​the smoking port 20B will be too small, and the smoke collection effect of the smoke will be poor.

[0075] For example, the specific value of L4 may be 2.1×L1+L2, 2.12×L1+L2, 2.14×L1+L2, 2.16×L1+L2, 2.18×L1+L2 or 2.2×L1+L2, which is not limited in this embodiment.

[0076] It should be noted that the distance from the front side wall of the shell assembly 30 to the rear side wall of the shell assembly 30 is usually 320mm to 450mm, so as to ensure a better smoke exhaust effect while avoiding the shell assembly 30 being too large in the front and rear direction of the range hood 1 and occupying too much space in the cabinet.

[0077] In some embodiments, the housing assembly 30 further includes a drainage assembly, which is connected to the bottom of the fan housing 111, wherein the smoke collecting housing 24 can be retracted into the drainage assembly when raised, so that the drainage assembly can have a certain shielding effect on the smoke collecting housing 24. Along the left and right directions of the range hood 1, the width of the smoke collecting housing 24 should be greater than or equal to 500 mm, and less than or equal to the width of the drainage assembly, so as to avoid the smoke collecting housing 24 being too small to cause a poor smoke collection effect, and also avoid the smoke collecting housing 24 being too large to be retracted into the drainage assembly.

[0078] See also Figure 5 In some embodiments, along the front-to-back direction of the range hood 1, the distance from the center line of the oil suction port to the rear side wall of the smoke exhaust shell 13 is L5, and the distance from the center line of the external burner 2 to the rear side wall of the smoke exhaust shell 13 is L6.

[0079] The condition is satisfied: 0.8×L6≤L5≤1.2×L6. In this way, the center line of the smoke outlet 20B can be closer to or overlap with the center line of the burner head 2, thereby ensuring the smoke-inducing effect.

[0080] If L5 is less than 0.8×L6, the center line of the smoking port 20B will be too far away from the center line of the burner 2, which will cause the smoking port 20B to have a poor smoke absorption effect. Similarly, if L5 is greater than 1.2×L6, the center line of the smoking port 20B will be too far away from the center line of the burner 2, which will cause the smoking port 20B to have a poor smoke absorption effect.

[0081] For example, the specific value of L5 may be 0.8×L6, 0.9×L6, 1×L6, 1.1×L6 or 1.2×L6, which is not limited in this embodiment.

[0082] Please refer to Figure 4-Figure 5 In some embodiments, along the front-to-back direction of the range hood 1, the distance from the front edge of the inlet 20B to the rear side wall of the smoke exhaust shell 13 is L4, and the distance from the rear edge of the inlet 20B to the rear side wall of the smoke exhaust shell 13 is L3. The condition is satisfied: L5 = L3 + 0.5 × (L4 - L3).

[0083] In this way, the center point of the oil suction port will pass through the midpoint of the front edge and the rear edge of the smoking port 20B, so as to obtain the distance from the center point of the oil suction port to the rear side wall of the smoke exhaust shell 13 through the distance from the front edge of the smoking port 20B to the rear side wall of the smoke exhaust shell 13 and the distance from the rear edge of the smoking port 20B to the rear side wall of the smoke exhaust shell 13.

[0084] See also Figure 4In some embodiments, the smoke exhaust housing 13 includes the above-mentioned flue housing 121 and the fan housing 111. The flue housing 121 includes a bottom channel 1211, a middle channel 1212, and a top channel 1213, which are sequentially connected and communicated to form a smoke exhaust channel 12A. The bottom channel 1211, the middle channel 1212, and the top channel 1213 can all be arranged in a long strip shape, and all three can be made of metal or plastic, which is not limited in this embodiment.

[0085] The bottom channel 1211 is connected to the smoke collecting housing 24 and communicates with the smoke collecting chamber 20A, and the communication port 12E is provided on the bottom channel 1211. The top channel 1213 may be located at one side of the fan housing 111, for example, located at one side of the fan housing 111 along the front-to-back direction of the range hood 1, or located at one side of the fan housing 111 along the front-to-back direction of the range hood 1. The top channel 1213 is connected to the fan housing 111, and the top channel 1213 is communicated with the fan chamber 111A. In some exemplary structural forms, the top channel 1213 and the fan housing 111 may be an integrally formed structure, so as to prevent smoke from escaping from the gap between the top channel 1213 and the fan housing 111. Of course, in other exemplary structural forms, the top channel 1213 and the fan housing 111 may also be a split structure, which is not limited in this embodiment.

[0086] The flow area of ​​the top channel 1213 and the flow area of ​​the bottom channel 1211 are both greater than the flow area of ​​the middle channel 1212 . In this way, the flow areas of the top channel 1213, the flow areas of the middle channel 1212 and the flow areas of the bottom channel 1211 will present a form in which the flow areas are large in size. This arrangement, on the one hand, can make it difficult for the noises located in the top channel 1213, the middle channel 1212 and the bottom channel 1211 to form resonance, reduce the probability of the superposition of the noises located in the top channel 1213, the noises located in the middle channel 1212 and the noises located in the bottom channel 1211, and help reduce the intensity of the noise; on the other hand, the top channel 1213 and the bottom channel 1211 will both form areas with larger impedance, while the middle channel 1212 will form an area with smaller impedance, so that the noise will be hindered in the process of propagating from the top channel 1213 to the middle channel 1212 and in the process of propagating from the bottom channel 1211 to the middle channel 1212, and can effectively consume the energy of the noise, thereby helping to weaken the energy of the noise, so as to reduce the noise generated when the range hood 1 is in operation.

[0087] See also Figure 4Furthermore, in this embodiment, the smoke collecting housing 24 is configured to be height-adjustable, and the specific height-adjusting method includes any one of the following methods:

[0088] The first one is that the bottom channel 1211 can be raised and lowered relative to the middle channel 1212, that is, a one-stage lifting form, so that the bottom channel 1211 can drive the smoke collecting shell 24 to be raised and lowered to adjust the height of the smoke collecting shell 24;

[0089] The second type is that the middle channel 1212 can be raised and lowered relative to the top channel 1213, that is, a one-stage lifting form, so that the middle channel 1212 can drive the bottom channel 1211 and the smoke collecting shell 24 to be raised and lowered together to adjust the height of the smoke collecting shell 24;

[0090] Thirdly, the bottom channel 1211 can be raised and lowered relative to the middle channel 1212, and the middle channel 1212 can be raised and lowered relative to the top channel 1213, that is, a multi-stage lifting form. In this way, the height of the smoke collecting shell 24 can be adjusted through the multi-stage lifting adjustment form.

[0091] In this way, when the range hood 1 is working, the smoke collecting shell 24 can be lowered and located below the user's breathing area, so as to prevent the smoke collecting shell 24 from being higher than the user's breathing area and causing the user to inhale the smoke when collecting smoke. At the same time, the diffusion path of the smoke can be reduced and the situation of smoke escape can be improved. After the range hood 1 finishes absorbing the smoke, the smoke collecting shell 24 can be raised again, so that the smoke collecting shell 24 does not occupy too much space under the kitchen cabinet when the range hood 1 is not working.

[0092] See also Figure 4 In some embodiments, the smoke collecting shell 24 includes a shell body 241 and an opening plate 242. The shell body 241 is the main part of the smoke collecting shell 24, and the opening plate 242 is provided with a smoke outlet 20B. The opening plate 242 is connected to the shell body 241, and cooperates with the shell body 241 to form a smoke collecting chamber 20A. In the direction from front to back of the range hood 1, the opening plate 242 is inclined in a direction away from the smoke exhaust shell 13.

[0093] Thus, the oil suction port on the opening plate 242 is oriented sideways, so that the smoke inlet 20B can be closer to the smoke than the one on the top, so as to better draw the smoke and reduce the probability of smoke escaping.

[0094] It is understandable that the smoke collecting shell 24 may further include an oil cup 26, which is connected to the bottom of the shell body 241 and is used to receive and collect oil stains. Therefore, when the opening plate 242 is tilted, the oil stains can flow along the tilted direction of the opening plate 242 under its own action, and finally flow to the oil cup 26 and be collected by the oil cup 26, so as to better handle the oil stains in the smoke collecting shell 24.

[0095] See also Figure 5 Furthermore, the angle between the opening plate 242 and the horizontal plane is α, which satisfies the condition: 0°<α≤45°, for example, specifically 25°≤α≤35°. In this way, the oil suction port can be directed as directly as possible toward the pot on the basis of realizing the inclination of the opening plate 242, so as to better collect the oil smoke.

[0096] If α is equal to 0°, the opening plate 242 is parallel to the horizontal plane, and if α is greater than 45°, the inclination of the opening plate 242 is too large, resulting in the smoke outlet 20B not being directly facing the cooker, which has a poor effect on smoke collection and converging, and a greater possibility of smoke escaping.

[0097] Exemplarily, α may be 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40° or 45°, etc., which is not limited in this embodiment.

[0098] See also Figure 5 In some embodiments, along the height direction of the range hood 1, the height from the rear edge of the smoke outlet 20B to the stove 3 outside is H1, the height from the front edge of the smoke outlet 20B to the stove 3 is H2, and the height from the bottom of the smoke collecting shell 24 to the stove 3 outside is H3, for example, the height from the oil cup 26 to the stove 3 is H3. It can be understood that the value range of H3 is usually 650mm to 850mm.

[0099] The condition is satisfied: H3≤H1+0.5×(H2-H1)≤2.4×H3. It should be noted that, in the present embodiment, the smoke collecting housing 24 is in a descending state and is located at the lowest position, and the value of H3 is usually in the range of 300 mm to 650 mm.

[0100] In this way, the smoke collecting shell 24 has a better smoke collecting effect while ensuring that the space occupied by the cabinet is not too large. It can be understood that if H1+0.5×(H2-H1)<H3, the position of the smoke outlet 20B will be low, and the smoke collecting shell 24 will occupy too much space in the cabinet along the height direction of the range hood 1. If H1+0.5×(H2-H1)>H3, the position of the smoke outlet 20B will be too high, and the smoke collecting and collecting effects of the smoke collecting shell 24 will be poor.

[0101] For example, the specific value of H1+0.5×(H2-H1) may be H3, 1.2×H3, 1.4×H3, 1.6×H3, 1.8×H3, 2×H3, 2.2×H3 or 2.4×H3, which is not limited in this embodiment.

[0102] To further reduce noise within the housing assembly 30, see Figure 6-Figure 7In some embodiments, the flue shell 121 has a flue guide 12B. The housing assembly 30 further includes a fairing 122 .

[0103] The rectifying member 122 may include at least one of a muffler, a metal member, and a plastic member, and this embodiment does not limit this. When the rectifying member 122 is a muffler, it can further reduce the noise and achieve a better noise reduction effect. It is understandable that the rectifying member 122 itself can rectify and guide the flow of smoke, that is, rectify and guide the smoke flowing from the inside of the middle channel 1212 to the inside of the top channel 1213, so that the probability of eddy currents generated when the smoke flows can be reduced, so as to reduce the flow loss of the smoke, improve the smoking efficiency, and effectively reduce the noise generated when the smoke flows. The rectifying member 122 is arranged inside the middle channel 1212, that is, the rectifying member 122 is arranged in the part of the smoke exhaust channel 12A constructed by the middle channel 1212, and the rectifying member 122 is connected to the inner wall of the middle channel 1212. It can be understood that, based on the fact that the middle channel 1212 is made of a rigid material such as metal, the rectifying member 122 can be relatively stably installed on the middle channel 1212, thereby ensuring the stability of the connection and also ensuring the safety of the user when using the range hood 1.

[0104] The flue gas duct 12B includes a first flow guiding section 12C and a second flow guiding section 12D which are connected to each other. It is understood that in one form, the interior of the bottom channel 1211 is connected to the first flow guiding section 12C, and the second flow guiding section 12D is connected to the interior of the top channel 1213; in another form, the bottom channel 1211 is connected to the second flow guiding section 12D, and the top channel 1213 is connected to the fan chamber 111A.

[0105] Specifically, the flow straightener 122 at least forms a first flow guide section 12C, or the flow straightener 122 and the intermediate channel 1212 at least jointly form the first flow guide section 12C; the flow straightener 122 also forms a second flow guide section 12D, or the flow straightener 122 and the intermediate channel 1212 jointly form the second flow guide section 12D, or a section of the intermediate channel 1212 where the flow straightener 122 is not provided is the second flow guide section 12D. It is understandable that the first flow guide section 12C and the second flow guide section 12D may be formed in any of the following forms:

[0106] The first type: the fairing 122 forms a first guide section 12C, and the fairing 122 also forms a second guide section 12D;

[0107] The second type: the fairing 122 forms a first guide section 12C, and a section of the middle channel 1212 where the fairing 122 is not provided forms a second guide section 12D;

[0108] The third type: the fairing 122 forms a first guide section 12C, and the fairing 122 and the middle channel 1212 form a second guide section 12D together;

[0109] The fourth type: the fairing 122 and the middle channel 1212 together form a first guide section 12C, and the fairing 122 forms a second guide section 12D;

[0110] The fifth type: the rectifying member 122 and the middle channel 1212 together form a first flow guide section 12C, and a section of the middle channel 1212 where the rectifying member 122 is not provided forms a second flow guide section 12D;

[0111] The sixth type: the flow straightening member 122 and the middle channel 1212 jointly form a first flow guiding section 12C, and the flow straightening member 122 and the middle channel 1212 jointly form a second flow guiding section 12D.

[0112] In order to reduce the noise generated by the shell assembly 30 during the operation of the range hood 1, the flow area of ​​the first guide section 12C is set to be larger than the flow area of ​​the second guide section 12D in this embodiment. This setting, on the one hand, makes it difficult for the first guide section 12C and the second guide section 12D to form resonance, reduces the probability of the noise located in the first guide section 12C and the noise located in the second guide section 12D being superimposed, and is conducive to reducing the intensity of the noise; at the same time, the first guide section 12C is formed into a region with a larger impedance, and the second guide section 12D is formed into a region with a smaller impedance, so that the noise is hindered in the process of propagating from the first guide section 12C to the second guide section 12D, or from the second guide section 12D to the first guide section 12C, and can effectively consume the energy of the noise, thereby helping to weaken the energy of the noise. Combined with the setting that the flow area of ​​the top channel 1213 and the flow area of ​​the bottom channel 1211 are both larger than the flow area of ​​the middle channel 1212, the noise of the entire range hood 1 is greatly reduced.

[0113] On the other hand, based on the form of internal connection between the first guide section 12C and the bottom channel 1211, the first guide section 12C with a larger flow area can increase the flow area of ​​the smoke flowing into the guide flue 12B, so that the middle channel 1212 has a better smoke gathering effect and improves the smoke exhaust efficiency; and based on the form of internal connection between the first guide section 12C and the top channel 1213, the first guide section 12C with a larger flow area can reduce the flow rate of the oil smoke, which helps to reduce the impact intensity of the oil smoke on the fan 112, thereby effectively reducing the noise of the entire range hood 1.

[0114] It is worth mentioning that, based on the fact that the rectifying member 122 is arranged on the inner wall of the middle channel 1212 and the rectifying member 122 can construct the form of the first guide section 12C, in the actual manufacturing process, the middle channel 1212 and the rectifying member 122 can be manufactured and formed separately, and then the two can be assembled. This facilitates the manufacturing and production of the middle channel 1212 and the rectifying member 122, and at the same time avoids the shape of the middle channel 1212 being too complicated due to the separate construction of the guide flue 12B through the middle channel 1212 itself, making the design of the middle channel 1212 simpler, so that the shape of the middle channel 1212 can be designed to be more regular.

[0115] Further, the fairing 122 is arranged in a ring on the inner wall of the middle channel 1212. It is understandable that the fairing 122 can be arranged in a ring shape and arranged on the inner wall of the middle channel 1212, so that the first guide section 12C can be directly constructed by using the fairing 122, and in some forms, the second guide section 12D can also be directly constructed by using the fairing 122. Based on this embodiment, the first guide section 12C and the second guide section 12D can be constructed in any of the following forms:

[0116] The first type: the fairing 122 forms a first guide section 12C, and the fairing 122 also forms a second guide section 12D;

[0117] The second type: the fairing 122 forms a first guide section 12C, and a section of the middle channel 1212 where the fairing 122 is not provided forms a second guide section 12D;

[0118] The third type: the fairing 122 forms a first guide section 12C, and the fairing 122 and the middle channel 1212 form a second guide section 12D together.

[0119] Thus, by the annular arrangement of the rectifying member 122, on the one hand, when the smoke flows through the guide flue 12B, it can be rectified and guided by the rectifying member 122, thereby further reducing the overall flow loss of the smoke, improving the smoking efficiency, and effectively reducing the noise generated when the smoke flows. On the other hand, a single rectifying member 122 can be arranged on the inner wall of the middle channel 1212, with fewer assembly steps, and the annular rectifying member 122 has a more regular structure, which is convenient for manufacturing and production.

[0120] Alternatively, the fairing 122 is disposed on a portion of the inner wall of the intermediate channel 1212. It is understandable that the inner wall of the intermediate channel 1212 is partially covered by the fairing 122, so the intermediate channel 1212 can at least jointly construct the first guide section 12C with the fairing 122, and in some forms, the fairing 122 and the intermediate channel 1212 can also be further used to jointly construct the second guide section 12D. Based on this embodiment, the first guide section 12C and the second guide section 12D can be constructed in any of the following forms:

[0121] The first type: the fairing 122 and the middle channel 1212 together form a first guide section 12C, and a section of the middle channel 1212 where the fairing 122 is not provided forms a second guide section 12D;

[0122] The second type: the flow straightening member 122 and the middle channel 1212 jointly form a first flow guiding section 12C, and the flow straightening member 122 and the middle channel 1212 jointly form a second flow guiding section 12D.

[0123] In this way, the first guide section 12C can be constructed through the cooperation of the rectifying component 122 and the middle channel 1212 to reduce the material usage of the rectifying component 122, which is beneficial to reducing production costs. In addition, the rectifying component 122 can be flexibly set at a specific position in the middle channel 1212 according to the actual required rectifying and guiding effects, which makes operation more convenient.

[0124] See also Figure 8 In some embodiments, the housing assembly 30 further includes a first guide 251 and a second guide 252. The first guide 251 and the second guide 252 are both disposed in the smoke collecting chamber 20A. It is understood that the first guide 251 and the second guide 252 are used to guide the smoke flowing in from the smoke inlet 20B to the connecting port 12E, so that the smoke flows 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 reducing the flow loss of the smoke, and improving the smoke exhaust efficiency of the range hood 1.

[0125] The first guide 251 and the second guide 252 may both include at least one of a silencer, a metal part, and a plastic part, and this embodiment does not limit this. 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 smoke guiding effect. It should be noted that this embodiment may not be limited to only including the first guide 251 and the second guide 252, and 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, and this embodiment does not limit this.

[0126] The first guide member 251 has a first guide surface 2511, and the first guide surface 2511 faces the connecting port 12E. 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 smoking port 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 smoking port 20B.

[0127] 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 by the smoke exhaust port to the outside on the user, thereby greatly improving the user experience.

[0128] See also Figure 8 In some embodiments, along the height direction of the range hood 1, the second guide member 252 is disposed closer to the communication port 12E than the first guide member 251. It is understandable that there is a height difference between the second guide member 252 and the first guide member 251, and the second guide member 252 is disposed higher than the first guide member 251, that is, along the height direction, the communication port 12E, the second guide member 252 and the first guide surface 2511 are disposed sequentially from top to bottom.

[0129] In this way, compared with the form in which the first guide member 251 is arranged closer to the connecting port 12E than the second guide member 252, the form of this embodiment can extend the path of the noise from the connecting port 12E to the first guide surface 2511. On this basis, the path of the noise from the first guide surface 2511 to the second guide surface 2521 can also be extended, 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.

[0130] See also Figure 8 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 connecting port 12E, the first air guide 251, the smoke outlet 20B and the second air guide 252 are arranged in sequence from top to bottom.

[0131] In this way, after the noise is transmitted from the high-position connecting port 12E, it will be transmitted to the low-position first guide surface 2511. 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 below the second guide member 252, thereby effectively reducing the energy of the noise.

[0132] 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.

[0133] 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 housing assembly, characterized in that: Suitable for range hoods, including: A smoke collecting shell having a smoke collecting cavity and a smoking port communicated with the smoke collecting cavity; and a smoke exhaust shell connected to the smoke collecting shell and having a smoke exhaust channel, wherein the smoke exhaust channel has a connecting port for communicating with the smoke collecting chamber, and smoke sequentially passes through the smoke outlet, the smoke collecting chamber and the connecting port into the smoke exhaust channel; Wherein, along the height direction of the range hood, the projections of the connecting port and the suction port on the same horizontal plane are staggered.

2. The housing assembly according to claim 1, wherein: Along the front-to-back direction of the range hood, the smoke intake port is spaced apart from the smoke exhaust passage and is located in front of the smoke exhaust passage.

3. The housing assembly according to claim 2, wherein: The smoke exhaust channel extends continuously along the height direction of the range hood, and is staggered as a whole with the projection of the smoke outlet on the same horizontal plane.

4. The housing assembly according to claim 2, wherein: Along the front-to-back direction of the range hood, the length of the communication port is L1, and the distance from the rear side wall of the smoke collecting shell to the rear side wall of the smoke exhaust shell is L2; Wherein, the distance from the rear edge of the smoking port to the rear side wall of the smoke exhaust shell is L3, and satisfies the condition: 1.05×L1+L2≤L3≤1.5×L1+L2; and / or, The distance from the front edge of the smoking port to the rear side wall of the smoke exhaust shell is L4, and satisfies the condition: 2.1×L1+L2≤L4≤2.2×L1+L2.

5. The housing assembly according to claim 2, wherein: The smoke exhaust shell comprises: A flue shell, comprising a bottom channel, a middle channel and a top channel connected in sequence, wherein the bottom channel, the middle channel and the top channel are connected in sequence to cooperate to form the smoke exhaust channel, and the bottom channel is connected to the smoke collecting shell; and A fan housing, connected to the top channel and having a fan cavity communicated with the smoke exhaust channel, wherein the fan cavity is used to accommodate a fan of the range hood; Wherein, the flow area of ​​the top channel and the flow area of ​​the bottom channel are both larger than the flow area of ​​the middle channel.

6. The housing assembly according to claim 5, characterized in that: The bottom channel can be raised and lowered relative to the middle channel, and / or the middle channel can be raised and lowered relative to the top channel, so as to adjust the height of the smoke collecting shell.

7. The housing assembly according to claim 5, characterized in that: The flue shell has a guide flue, and the shell assembly further includes: A flow straightener is arranged inside the intermediate channel and connected to the inner wall of the intermediate channel, the flow straightener at least forms a first flow guide section, or the flow straightener and the intermediate channel at least form a first flow guide section together; the flow straightener also forms a second flow guide section, or the flow straightener and the intermediate channel form a second flow guide section together, or a section of the intermediate channel where the flow straightener is not provided is the second flow guide section; Wherein, the guide flue comprises the first guide section and the second guide section, the first guide section is connected to the second guide section, and the flow area of ​​the first guide section is larger than the flow area of ​​the second guide section.

8. The housing assembly according to claim 7, wherein: The fairing member is arranged on the inner wall of the middle channel in a ring shape, or the fairing member is arranged on a part of the inner wall of the middle channel.

9. The housing assembly according to claim 2, wherein: Along the front-to-back direction of the range hood, the distance from the center line of the smoke inlet to the rear side wall of the smoke exhaust shell is L5, and the distance from the center line of the external burner to the rear side wall of the smoke exhaust shell is L6; Among them, the condition is satisfied: 0.8×L6≤L5≤1.2×L6.

10. The housing assembly according to claim 9, wherein: Along the front-to-back direction of the range hood, the distance from the front edge of the smoke inlet to the rear side wall of the smoke exhaust shell is L4, and the distance from the rear edge of the smoke inlet to the rear side wall of the smoke exhaust shell is L3; Among them, the condition is satisfied: L5 = L3 + 0.5 × (L4 - L3).

11. The housing assembly according to claim 2, wherein: The smoke collecting shell comprises: A shell body connected to the smoke exhaust shell; and An opening plate is connected to the shell body and cooperates with the shell body to enclose the smoke collecting chamber, and the smoking port is arranged on the opening plate; Wherein, in the direction from front to rear of the range hood, the opening plate is arranged tilted in a direction away from the smoke exhaust shell.

12. The housing assembly according to claim 11, wherein: The angle between the opening plate and the horizontal plane is α, which satisfies the condition: 0°<α≤45°.

13. The housing assembly according to claim 11, wherein: Along the height direction of the range hood, the height from the rear edge of the smoke outlet to the stove outside is H1, the height from the front edge of the smoke outlet to the stove outside is H2, and the height from the bottom of the smoke collecting shell to the stove outside is H3; Among them, the condition is satisfied: H3≤H1+0.5×(H2-H1)≤2.4×H3.

14. The housing assembly according to any one of claims 2 to 13, characterized in that: Also includes: A first guide member and a second guide member are arranged in the smoke collecting chamber at intervals, and are both used to guide smoke flowing into the smoking port to the connecting port, the first guide member has a first guide surface facing the connecting port, and the second guide member has a second guide surface facing the first 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.

15. The housing assembly according to claim 14, wherein: Along the height direction of the range hood, the second air guide member is arranged closer to the connecting port than the first air guide member.

16. The housing assembly according to claim 15, wherein: 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.

17. A range hood, characterized in that: include: The housing assembly according to any one of claims 1 to 16; and The fan is arranged in the smoke exhaust shell.

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