Range hood

Abstract

The present application discloses a range hood, belonging to the technical field of electrical equipment. The range hood includes a frame assembly and a smoke collecting assembly. The frame assembly includes a frame, a connecting flange and a fan. The connecting flange is connected to the bottom end of the frame and together with the frame, a fan cavity is formed. The fan is located in the fan cavity and above the connecting flange. The smoke collecting assembly includes a smoke collecting hood and a rectifying member. The smoke collecting hood has a smoke collecting cavity and a connecting port. The connecting port connects the smoke collecting cavity and the fan cavity. The rectifying member is arranged in the smoke collecting cavity, and along the up and down direction of the range hood, the projection of the rectifying member and the projection of the connecting flange partially overlap in the connecting port, so that the oil droplets of the connecting flange drip onto the upper surface of the rectifying member through the connecting port. The oil stains in this embodiment can fall on the rectifying member during the dripping process, which can more efficiently guide the oil stains to flow to the designated area and reduce the splashing of the oil stains in the frame and the smoke collecting hood.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a smoke collecting component and a range hood. Background Art

[0002] As modern families pursue a higher quality of life, range hoods have become an indispensable appliance in the kitchen. The main function of a range hood is to exhaust the fumes, odors and steam generated during cooking to the outside, keeping the kitchen environment clean and hygienic.

[0003] A range hood generally comprises a frame assembly and a smoke collecting assembly, wherein the frame assembly is used to support the fan, and the smoke collecting assembly is responsible for collecting and guiding the oil smoke to the fan chamber.

[0004] However, the oil guide structure of the range hood in the related art cannot effectively guide the flow path of the oil, causing the oil to splash everywhere, increasing the difficulty of cleaning; and users need to clean it frequently during use, increasing maintenance costs and time. Summary of the invention

[0005] An embodiment of the present application provides a range hood that can effectively guide the flow path of oil stains in the range hood.

[0006] The embodiment of the present application provides a range hood, comprising:

[0007] A frame assembly, comprising a frame, a connecting flange and a fan, wherein the connecting flange is connected to the bottom end of the frame and together with the frame forms a fan cavity, and the fan is located in the fan cavity and above the connecting flange;

[0008] A smoke collecting assembly includes a smoke collecting hood and a rectifying member, wherein the smoke collecting hood has a smoke collecting cavity and a connecting port, wherein the connecting port connects the smoke collecting cavity with the fan cavity, and the rectifying member is arranged in the smoke collecting cavity, and along the up and down directions of the range hood, the projection of the rectifying member and the projection of the connecting flange partially overlap in the connecting port, so that oil droplets on the connecting flange drip onto the upper surface of the rectifying member through the connecting port.

[0009] In some embodiments, the smoke collecting hood further comprises an upper smoke inlet and a lower smoke inlet, both of which are connected to the smoke collecting chamber, the upper smoke inlet is higher than the lower smoke inlet, and the smoke collecting hood comprises a front panel, at least the upper smoke inlet is arranged on the front panel;

[0010] The rectifying member is used to divide the smoke collecting chamber into an auxiliary air duct and a main air duct, the auxiliary air duct is connected with the upper smoke inlet and the connecting port, and the main air duct is connected with the lower smoke inlet and the connecting port.

[0011] In some embodiments, the upper smoke inlet includes an upper left smoke inlet and an upper right smoke inlet; the number of the rectifying parts is two, and the two rectifying parts are respectively:

[0012] a left side rectifying member, which is disposed in the smoke collecting chamber and defines a left side auxiliary air duct with the smoke collecting cover, wherein the left side auxiliary air duct is connected with the upper left smoke inlet and the connecting port; and

[0013] A right side rectifying member and the left side rectifying member are respectively arranged in the smoke collecting chamber along the left and right directions, and a right side auxiliary air duct is defined between the right side rectifying member and the smoke collecting hood, and the right side auxiliary air duct is connected with the upper right smoke inlet and the connecting port;

[0014] The main air duct is defined between the left side fairing, the right side fairing and the smoke collecting hood, the main air duct is connected with the lower smoke inlet and the connecting port, and the auxiliary air duct includes the left side auxiliary air duct and the right side auxiliary air duct;

[0015] Wherein, the upper surface of the left side fairing is arranged to be tilted downward from right to left and tilted downward from front to back; and / or, the upper surface of the right side fairing is arranged to be tilted downward from left to right and tilted downward from front to back.

[0016] In some embodiments, the connecting flange has a first oil guide groove located in the smoke collecting chamber, and the first oil guide groove extends in the left-right direction to guide the oil droplets of the connecting flange to the left fairing and the right fairing.

[0017] In some embodiments, the connecting flange comprises:

[0018] The oil receiving bottom plate is arranged below the fan and is arranged to be inclined downward from the front to the rear;

[0019] A surrounding plate is connected to the frame and the smoke collecting hood and is arranged around the oil receiving bottom plate. The rear side wall of the surrounding plate is spaced apart from the rear side wall of the oil receiving bottom plate to form a conducting port, and the conducting port is embedded in the communicating port to communicate with the smoke collecting chamber; and

[0020] The oil guide member is connected to the oil receiving bottom plate and is located in the conducting port, and has the first oil guide groove.

[0021] In some embodiments, the oil guide member includes:

[0022] a connecting plate connected to the rear side wall of the oil receiving bottom plate and extending downward from the oil receiving bottom plate toward the smoke collecting chamber; and

[0023] The slotted plate is connected to the bottom end of the connecting plate and has the first oil guide groove.

[0024] In some embodiments, the first oil guiding groove has a groove bottom wall, and along the left-right direction, the groove bottom wall is an arc-shaped groove bottom wall that is high in the middle and low at both ends.

[0025] In some embodiments, along the left-right direction, the bottom surface of the slotted plate is an arc-shaped bottom surface that is high in the middle and low at both ends.

[0026] In some of the embodiments, the left edge region and / or the right edge region of the oil receiving bottom plate further has a second oil guiding groove, and the second oil guiding groove extends in the front-rear direction.

[0027] In some of the embodiments, the front edge region of the oil receiving bottom plate further has a third oil guiding groove, the third oil guiding groove extends in the left-right direction and is connected to the second oil guiding groove.

[0028] In some embodiments, the left side fairing member includes a left side fairing section and a left side guide section which are connected to each other and arranged at an angle, the left side fairing section extends upwardly from left to right and obliquely, and the left side guide section extends upwardly from left to right and obliquely from one end of the left side fairing section and toward the connecting port;

[0029] The right side fairing member comprises a right side fairing section and a right side guide section which are connected to each other and arranged at an angle, the right side fairing section extends upwardly from right to left and obliquely, and the right side guide section extends upwardly from right to left and obliquely from one end of the right side fairing section and toward the connecting port;

[0030] Wherein, the projections of the left guide section and the right guide section along the up-down direction at least partially fall into the connecting opening.

[0031] In some embodiments, the left-side fairing member further includes a left-side flow stabilizing section, the left-side flow stabilizing section is connected to an end of the left-side flow guide section away from the left-side fairing section, and the left-side flow stabilizing section is extended from bottom to top toward the communication port;

[0032] The right side flow straightening member further comprises a right side flow stabilizing section, the right side flow stabilizing section is connected to one end of the right side flow guiding section away from the right side flow straightening section, and the right side flow stabilizing section is extended from bottom to top toward the communication port;

[0033] The projections of the left-side steady flow section and the right-side steady flow section along the up-down direction both fall into the flow opening.

[0034] In some of the embodiments, along the left-right direction, there is a sixth distance D6 between the left-side steady flow section and the left mouth wall of the connecting port, 25mm≤D6≤35mm; and / or, along the left-right direction, there is a seventh distance D7 between the right-side steady flow section and the right mouth wall of the connecting port, 25mm≤D7≤35mm.

[0035] In some embodiments, the smoke collecting hood includes an upper cover shell and a lifting shell, the lower smoke inlet is arranged on the lifting shell, and the lifting shell can be lifted and lowered relative to the upper cover shell to open or close the lower smoke inlet.

[0036] In some embodiments, the fume hood further comprises:

[0037] An oil cup is connected to the bottom end of the lifting shell, and oil droplets on the upper surface of the fairing can flow into the oil cup.

[0038] The connecting flange of the embodiment of the present application serves as a connecting structure between the frame and the smoke hood to ensure the connection stability between the frame and the smoke hood, and the rectifying component is located in the smoke collecting chamber of the smoke hood to rectify the inhaled oil smoke and make the oil smoke flow to the fan chamber more smoothly.

[0039] In this embodiment, the connecting flange and the rectifier can not only assume the above functions, but also serve as an oil guide structure to guide the flow path of the oil. The oil dripping in the frame can smoothly drip along the surface of the connecting flange through the connecting port to the upper surface of the rectifier, making use of the existing structure without adding additional oil guide components, which is both economical and efficient.

[0040] And because the projections of the connecting flange and the fairing partially overlap in the connecting port, the oil guided to the connecting flange can fall on the fairing during the dripping process, which can more efficiently guide the oil to the designated area and reduce the splashing of oil in the rack and the fume hood. And the oil is effectively guided, which reduces the accumulation of oil in non-designated areas, thereby reducing the difficulty and frequency of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] 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.

[0042] Figure 1 A schematic diagram of the structure of a range hood provided in one embodiment of the present application;

[0043] Figure 2A schematic diagram of the structure of a range hood provided by an embodiment of the present application in an upper single suction mode;

[0044] Figure 3 A schematic diagram of the structure of a range hood provided by an embodiment of the present application in a single suction mode;

[0045] Figure 4 A schematic diagram of the structure of a range hood provided by an embodiment of the present application in a top and bottom dual suction mode;

[0046] Figure 5 for Figure 4 The schematic diagram of the flow direction of the main air duct and the auxiliary air duct of the range hood shown in the upper and lower double suction mode;

[0047] Figure 6 A schematic cross-sectional view of a range hood provided in the related art in a single-suction mode (without a rectifying component);

[0048] Figure 7 A schematic cross-sectional view of a range hood in a top and bottom dual-suction mode provided in the related art (without a rectifying component);

[0049] Figure 8 It is another cross-sectional structural schematic diagram of the range hood provided in the related art in the upper and lower double suction mode (without the rectifying component);

[0050] Fig. 9 A schematic structural diagram of a range hood provided in another embodiment of the present application;

[0051] Fig.10 A schematic structural diagram of a range hood provided in yet another embodiment of the present application;

[0052] Fig.11 A schematic structural diagram of a range hood provided in yet another embodiment of the present application;

[0053] Fig.12 for Figure 4 The cross-sectional structure diagram of the range hood shown in the upper and lower dual suction mode;

[0054] Fig.13 for Figure 4 Another cross-sectional structural schematic diagram of the range hood shown in the upper and lower dual suction mode;

[0055] Fig.14 A schematic diagram of the structure of a rectifier provided in one embodiment of the present application;

[0056] Fig.15 A schematic diagram of the structure of a rectifier provided in another embodiment of the present application;

[0057] Fig.16A schematic cross-sectional view of the range hood provided by an embodiment of the present application in the upper single suction mode;

[0058] Fig.17 for Fig.16 Another cross-sectional structural schematic diagram of the range hood shown in the upper single suction mode;

[0059] Fig.18 A schematic cross-sectional view of the range hood provided by an embodiment of the present application in a single suction mode;

[0060] Fig.19 A schematic cross-sectional view of the range hood provided by an embodiment of the present application in a top and bottom dual suction mode;

[0061] Fig. 20 for Fig.19 Another cross-sectional structural schematic diagram of the range hood shown in the upper and lower dual suction mode;

[0062] Fig.21 for Fig.18 Another cross-sectional structural schematic diagram of the range hood shown in the single-suction mode;

[0063] Fig. 22 A schematic diagram of the flow of oil and dirt when the range hood provided in the related art is in the upper and lower double suction mode (without the rectifier);

[0064] Fig.23 for Figure 4 The schematic diagram of the oil flow direction of the range hood shown in the figure when it is in the upper and lower double suction mode;

[0065] Fig.24 for Fig.23 A partial enlarged view of the middle A;

[0066] Fig.25 for Figure 4 Another schematic diagram of the oil flow direction of the range hood when it is in the upper and lower dual suction mode;

[0067] Fig.26 for Fig.25 A partial enlarged view of point B in the middle;

[0068] Fig. 27 A schematic diagram of the structure of a connecting flange provided in an embodiment of the present application;

[0069] Fig.28 for Fig. 27 Another structural schematic diagram of the connecting flange shown;

[0070] Fig.29 for Fig. 27 Schematic diagram of the cross-sectional structure of the connecting flange shown.

[0071] Description of Figure Numbers:

[0072] 1. Range hood;

[0073] 100, smoke collecting assembly; 11, smoke collecting hood; 11a, smoke collecting chamber; 111a, auxiliary air duct; 1111a, left auxiliary air duct; 1112a, right auxiliary air duct; 112a, main air duct; 11b, upper smoke inlet; 111b, upper left smoke inlet; 112b, upper right smoke inlet; 11c, lower smoke inlet; 11d, connecting port; 111d, left inlet wall; 112d, right inlet wall; 11e, left smoke inlet; 11f, right smoke inlet; 111, upper cover shell; 1111, front panel; 1112, back panel; 1113, left side panel; 1114, right side panel; 1115, top panel; 112, lifting shell; 1121, lifting frame ;1122, air inlet net;113, guide plate;12, rectifying part;121, rectifying section;122, guide section;123, steady flow section;12a, rectifying part on the left;121a, rectifying section on the left;1211a, first folding edge;122a, guide section on the left;1221a, third folding edge;123a, steady flow section on the left;124a, left rotating shaft;1231a, fifth folding edge;12b, rectifying part on the right;121b, rectifying section on the right;122b, guide section on the right;123b, steady flow section on the right;124b, rotating shaft on the right;13, upper opening and closing part;14, glass baffle;15, push rod motor;16, oil cup;

[0074] 200, rack assembly; 21, rack; 21a, fan cavity; 211, left mounting plate; 212, right mounting plate; 213, top mounting plate; 22, connecting flange; 22a, guide port; 221, oil receiving bottom plate; 222, enclosure plate; 223, oil guide member; 2231, connecting plate; 2232, slotted plate; 2232a, first oil guide groove; 23, fan; 24, top oil guide structure; 241, left oil guide structure; 242, right oil guide structure;

[0075] 300. Check valve assembly.

[0076] 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

[0077] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0078] First, see Figure 1 and Figure 5The embodiment of the present application provides a smoke collecting assembly 100, which is applied to a range hood 1. The range hood 1 can be used in a kitchen and is usually installed near the stove surface to better capture the oil smoke and steam generated by cooking utensils during the cooking process. The range hood 1 includes a frame assembly 200, and the frame assembly 200 has a fan cavity 21a. A fan 23 is arranged in the fan cavity 21a, and the fan 23 is used to generate negative pressure suction. The smoke collecting assembly 100 is the core component of the range hood 1, and its main function is to collect and guide the oil smoke and transport it to the fan 23 of the range hood 1 for exhaust treatment.

[0079] like Figure 2 , Figure 3 and Figure 5 As shown, specifically, the smoke collecting assembly 100 includes a smoke collecting hood 11, and the smoke collecting hood 11 may be in a cubic shape. The cubic smoke collecting hood 11 has a regular shape and is easy to clean and maintain. The smoke collecting hood 11 may be made of stainless steel or aluminum alloy, and has good heat resistance and corrosion resistance. The smoke collecting hood 11 has a smoke collecting chamber 11a, an upper smoke inlet 11b, a lower smoke inlet 11c, and a connecting port 11d. The upper smoke inlet 11b, the lower smoke inlet 11c, and the connecting port 11d are all connected to the smoke collecting chamber 11a. It can be understood that the upper smoke inlet 11b and the lower smoke inlet 11c can be opened or closed separately. Among them, the lower smoke inlet 11c can be extended along the left-right direction AA on the smoke collecting hood 11, and is in the shape of a long strip.

[0080] The smoke collecting chamber 11a is a temporary storage space for oil smoke, which is used to accommodate and guide the flow of oil smoke. Its spacious internal space can accommodate a large amount of oil smoke to prevent oil smoke from escaping. The connecting port 11d is used to communicate with the frame assembly 200 of the range hood 1 to ensure that the oil smoke can smoothly enter the frame assembly 200 for exhaust treatment. The upper smoke inlet 11b and the lower smoke inlet 11c are respectively located at the upper and lower parts of the smoke collecting hood 11, that is, the upper smoke inlet 11b is higher than the lower smoke inlet 11c. The upper smoke inlet 11b and the lower smoke inlet 11c are provided to enable the smoke collecting assembly 100 to have a larger smoke collection area, thereby improving the oil smoke absorption effect of the range hood 1. And the upper smoke inlet 11b and the lower smoke inlet 11c can effectively capture the oil smoke generated by different cooking methods. The upper smoke inlet 11b is suitable for cooking methods where oil smoke rises, such as steaming; while the lower smoke inlet 11c is suitable for cooking methods where oil smoke sinks, such as frying.

[0081] The oil smoke generated during the actual cooking process, whether rising or sinking, can be effectively captured by the upper smoke inlet 11b and / or the lower smoke inlet 11c, and enter the smoke collecting chamber 11a through the connecting port 11d, enter the frame assembly 200 of the range hood 1, and be forcefully discharged to the outside through the exhaust duct connected to the fan 23, thereby reducing the concentration of oil smoke in the kitchen and keeping the kitchen air fresh.

[0082] In order to enable the range hood 1 to provide flexible fume extraction modes according to different cooking requirements, the fume collection assembly 100 has an upper single extraction mode (such as Figure 2 ), order absorption mode (such as Figure 3 ) and upper and lower double suction mode (such as Figure 4 ), the upper single suction mode is a mode in which only the upper smoke inlet 11b is opened. At this time, the upper smoke inlet 11b is far away from the heat source of the stove, which can better ensure the thermal efficiency of the stove and prevent too much heat from being taken away by the lower smoke inlet 11c. For example, the required air volume is low during cooking operations such as making soup and frying steak. The lower single suction mode is a mode in which only the lower smoke inlet 11c is opened. The oil smoke is mainly generated at the bottom, and the oil smoke is large, requiring a large air volume. For example, the lower single suction mode can be turned on during cooking operations such as frying and stir-frying. The upper and lower double suction mode is to open the upper smoke inlet 11b and the lower smoke inlet 11c at the same time. It is suitable for the situation where multiple cooking methods are carried out in parallel. The position where the oil smoke is generated is not fixed. In the upper and lower double suction mode, the oil smoke generated from the upper and lower parts can be captured at the same time. The smoke collection component 100 has multiple modes so that the user can choose a suitable smoking mode, which can more effectively deal with the oil smoke generated during the cooking process.

[0083] Please continue reading Figure 2 and Figure 3 There are various ways to open and close the upper smoke inlet 11b and the lower smoke inlet 11c. In one setting, the smoke collecting assembly 100 also includes an upper opening and closing member 13 and a lower opening and closing member, and the upper opening and closing member 13 and the lower opening and closing member are both movably connected to the smoke collecting hood 11. The specific form of the movable connection can be a rotating connection or a sliding connection. The user can flexibly open or close the upper smoke inlet 11b and the lower smoke inlet 11c according to cooking needs. In another setting form, the smoke collecting hood 11 includes an upper cover shell 111 and a lifting shell 112. The upper smoke inlet 11b is arranged on the upper cover shell 111 and is opened or closed by the upper opening and closing member 13, and the lower smoke inlet 11c is arranged on the lifting shell 112. The lifting shell 112 can be lifted and lowered relative to the upper cover shell 111 to open or close the lower smoke inlet 11c. When the lower smoke inlet 11c needs to be opened, the lifting shell 112 descends relative to the upper cover shell 111 to open the lower smoke inlet 11c. The lower smoke inlet 11c is closer to the area where oil smoke is generated, and can more effectively capture and collect oil smoke, thereby improving the smoking efficiency.

[0084] like Figure 4 As shown, further, the smoke collecting assembly 100 also includes a glass baffle 14, which is located between the upper opening and closing piece 13 and the lower opening and closing piece. The glass baffle 14 can be located on the front side of the smoke collecting hood 11 facing the user, so that the smoke collecting assembly 100 is more beautiful; at the same time, the glass baffle 14 is easier to clean than the metal baffle after being stained with oil, which makes it convenient for the user to clean the appearance of the smoke collecting assembly 100.

[0085] like Figure 5As shown, illustratively, the smoke collecting assembly 100 also includes a push rod motor 15, which is installed in the smoke collecting chamber 11a. The push rod motor 15 is used to drive the lifting shell 112 to perform lifting movement relative to the upper cover shell 111. The automatically lifting lower smoke inlet 11c design can provide a more convenient operating experience.

[0086] Please continue reading Figure 5 Furthermore, in order to guide the inflow path of the oil smoke inhaled by the lower smoke inlet 11c, the smoke collecting hood 11 also includes a guide plate 113. The guide plate 113 is connected to the lifting shell 112 and can be lifted and lowered along with the lifting shell 112. The guide plate 113 is tilted upward from front to back, which helps to guide the smoke inhaled by the lower smoke inlet 11c to flow smoothly into the smoke collecting chamber 11a, thereby reducing the diffusion of oil smoke in the kitchen space. The lifting shell 112 includes a lifting frame 1121 and an air inlet net 1122. The air inlet net 1122 is mounted on the lifting frame 1121 and is located above the guide plate 113. The mesh of the air inlet net 1122 is connected to the lower smoke inlet 11c. The air inlet net 1122 has a filtering function, which can prevent foreign matter from entering the smoke collecting chamber 11a along with the oil smoke airflow, thereby making the use of the range hood 1 safer.

[0087] Understandably, when the smoke collecting assembly 100 is in the upper single suction mode and the upper and lower double suction mode, the upper opening and closing member 13 opens the upper smoke inlet 11b; when the smoke collecting assembly 100 is in the lower single suction mode, the upper opening and closing member 13 closes the upper smoke inlet 11b. The user can flexibly choose whether to open the upper smoke inlet 11b according to the amount and type of oil smoke generated during cooking to achieve a personalized smoking effect.

[0088] like Figure 4 and Figure 5 As shown, optionally, the smoke hood 11 includes a front panel 1111, a left side panel 1113, a back panel 1112 and a right side panel 1114 connected in sequence, and the front panel 1111, the left side panel 1113, the back panel 1112 and the right side panel 1114 are all thin plates, and the front panel 1111 and the back panel 1112 are arranged oppositely along the front-to-back direction BB. It can be understood that the front panel 1111 is located at the front of the smoke collection assembly 100, usually opposite to the cooking area, so as to better capture the oil smoke generated during the cooking process. The left side panel 1113 and the right side panel 1114 are arranged oppositely along the left and right sides, that is, they are located on both sides of the front panel 1111 along the left-right direction AA. The left side panel 1113 and the right side panel 1114 can be parallel to each other and vertically connected to the front panel 1111 and the back panel 1112. The front panel 1111, the left side panel 1113, the back panel 1112 and the right side panel 1114 constitute the above-mentioned smoke collection chamber 11a, which is used to collect the oil smoke generated during the cooking process.

[0089] Understandably, the smoke hood 11 further includes a top plate 1115, which is covered above the smoke collecting chamber 11a formed by the front panel 1111, the left side panel 1113, the back panel 1112 and the right side panel 1114, providing a closed space for the smoke collecting chamber 11a, and the top plate 1115 defines the above-mentioned connecting port 11d and is connected to the frame assembly 200, so that the oil smoke can flow smoothly from the smoke collecting chamber 11a to the frame assembly 200, thereby improving the oil smoke extraction efficiency. Along the left-right direction AA, the frame assembly 200 is connected to the middle of the top plate 1115, and this symmetrical layout gives people a sense of balance and harmony visually.

[0090] Furthermore, in one embodiment, the smoke hood 11 may also include a bottom plate, which is arranged opposite to the top plate 1115 in the up and down direction, and the bottom plate, the left plate 1113, the right plate 1114, the front panel 1111, the back plate 1112 and the top plate 1115 together form a smoke collecting chamber 11a.

[0091] In one embodiment, at least the upper smoke inlet 11b is disposed on the front panel 1111. Understandably, the lower smoke inlet 11c can be disposed on the bottom plate or the lifting shell 112, or on the front panel 1111. The position of the lower smoke inlet 11c can be designed according to different user needs and kitchen space layout. When the lower smoke inlet 11c is disposed on the front panel 1111, it is easier for the user to clean and maintain; when the lower smoke inlet 11c is disposed on the bottom plate or the lifting shell 112, it is closer to the cooker and can quickly absorb the fumes generated during cooking.

[0092] Please continue reading Figure 5 , wherein the smoke collecting assembly 100 further includes a rectifying member 12, which is disposed in the smoke collecting chamber 11a and divides the smoke collecting chamber 11a into an auxiliary channel and a main air channel 112a, wherein the auxiliary air channel 111a connects the upper smoke inlet 11b and the connecting port 11d, and provides a smooth flow path for the oil smoke inhaled by the upper smoke inlet 11b, thereby preventing the oil smoke inhaled by the upper smoke inlet 11b from colliding with the oil smoke inhaled by the lower smoke inlet 11c to generate vortex in the smoke collecting chamber 11a, and the main air channel 112a connects the lower smoke inlet 11c and the connecting port 11d, and provides a smooth flow path for the oil smoke inhaled by the lower smoke inlet 11c, thereby guiding the corresponding oil smoke to smoothly enter the frame assembly 200. Therefore, the arrangement of the rectifying member 12 can effectively guide the oil smoke inhaled by the upper smoke inlet 11b and / or the lower smoke inlet 11c to flow according to their respective preset paths, thereby reducing the chaos and vortex of the smoke in the smoke collecting chamber 11a.

[0093] The arrangement of the rectifying member 12 can guide the oil smoke to flow smoothly, prevent the oil smoke from generating eddy currents or collisions in the smoke collecting chamber 11a, and thus reduce noise. In addition, the rectifying member 12 can also optimize the path of the oil smoke flow, reduce the friction between the inhaled oil smoke and the cavity wall of the smoke collecting chamber 11a, further reduce noise, and provide a comfortable cooking environment for users.

[0094] like Figure 5 As shown, further, a rectifying member 12 is provided to divide the smoke collecting chamber 11a into an auxiliary air duct 111a and a main air duct 112a, so as to avoid interference between the fumes sucked in from the upper smoke inlet 11b and the lower smoke inlet 11c, reduce wind resistance, improve the exhaust efficiency of the range hood 1, reduce the energy consumption of the range hood 1, and allow the fumes to more smoothly enter the fan 23 of the frame assembly 200 for exhaust treatment, thereby reducing the concentration of fumes in the kitchen.

[0095] like Figure 6 As shown, the range hood 1 in the figure is not provided with an upper smoke inlet 11b and a rectifying member, that is, in the lower single-suction mode, the rising smoke flow of the lower smoke inlet 11c will have partial vortexes at the left and right shoulders in the smoke collecting chamber 11a and at the junction of the frame assembly 200 and the smoke collecting assembly 100. Figure 7 and Figure 8 As shown, in the upper and lower double suction mode, the oil fume airflows simultaneously sucked in by the lower smoke inlet 11c and the upper smoke inlet 11b will converge at the connecting port 11d, but since the rising oil fume of the lower smoke inlet 11c flows vertically upward, and the oil fume of the upper smoke inlet 11b converges from both sides, the two oil fume airflows affect each other, that is, the oil fume airflow of the upper smoke inlet 11b and the oil fume airflow of the lower smoke inlet 11c interfere with each other, resulting in low oil fume airflow efficiency of the range hood 1.

[0096] Therefore, the arrangement of the rectifying member 12 can reduce the partial vortexes in the left and right shoulders of the smoke collecting chamber 11a and the junction between the frame assembly 200 and the smoke collecting assembly 100 at the rising oil and smoke airflow of the lower smoke inlet 11c in the lower single-suction mode, and reduce the mutual interference between the oil and smoke airflow of the upper smoke inlet 11b and the smoke and oil airflow of the lower smoke inlet 11c in the upper and lower double-suction mode.

[0097] In one setting, the upper smoke inlet 11b is arranged on the front panel 1111, and the upper smoke inlet 11b extends horizontally to form a long strip, which can form a larger oil fume absorption area and cover a larger oil fume absorption area, thereby increasing the oil fume absorption range. The long strip-shaped upper smoke inlet 11b can inhale smoke more evenly and reduce oil fume accumulation in local areas.

[0098] Correspondingly, in this arrangement, the number of the rectifying member 12 can be one, and the rectifying member 12 is a long strip rectifying member 12 extending along the left-right direction AA, and the long strip rectifying member 12 divides the smoke collecting chamber 11a into a main air duct 112a and an auxiliary air duct 111a along the front-back direction BB, and the auxiliary air duct 111a is the front upper side space of the smoke collecting chamber 11a, and the higher oil smoke generated during cooking is sucked into the long strip upper smoke inlet 11b located on the front panel 1111, and the oil smoke passes through the upper After passing through the smoke inlet 11b, the smoke enters the upper front space of the smoke collecting chamber 11a, namely the auxiliary air duct 111a. This space is divided by a long strip of rectifying parts 12, which can guide the oil smoke sucked in by the upper smoke inlet 11b to flow to the connecting port 11d; the lower oil smoke generated during the cooking process is captured by the lower smoke inlet 11c located at the lower part of the smoke collecting hood 11, enters the main air duct 112a of the smoke collecting chamber 11a through the lower smoke inlet 11c, and flows to the connecting port 11d along the guidance of the rectifying part 12.

[0099] like Figure 2 and Figure 5 As shown, in another configuration, the upper smoke inlet 11b includes an upper left smoke inlet 111b and an upper right smoke inlet 112b. The upper left smoke inlet 111b is arranged at the upper left corner of the left side panel 1113 and / or the front panel 1111, which can effectively capture the oil smoke generated by cooking on the left side of the stove, ensuring that the oil smoke will not spread to the right side space; the upper right smoke inlet 112b is arranged at the upper right corner of the right side panel 1114 and / or the front panel 1111, which can effectively capture the oil smoke generated by cooking on the right side of the stove, ensuring that the oil smoke will not spread to the left side space. The upper left smoke inlet 111b and the upper right smoke inlet 112b correspond to the cooking areas on both sides respectively, which can effectively capture the oil smoke, reduce the diffusion of the oil smoke, and improve the efficiency of oil smoke absorption. In actual use, the stove top is usually equipped with two burners, which are spaced apart along the left-right direction AA. The upper left smoke inlet 111b and the upper right smoke inlet 112b can correspond to the oil smoke generated by cooking on one stove, ensuring the independence and efficiency of the cooking areas on both sides.

[0100] Please continue reading Figure 5 It can be understood that the upper left smoke inlet 111b and the upper right smoke inlet 112b can be arranged symmetrically, which can ensure that the fumes from the cooking areas on both sides are evenly collected, avoiding the pollution caused by uneven collection of fumes in the kitchen, and the symmetrically arranged upper left smoke inlet 111b and upper right smoke inlet 112b are more visually balanced and harmonious, which can enhance the overall aesthetics of the smoke collection assembly 100.

[0101] Furthermore, the upper left smoke inlet 111b and the upper right smoke inlet 112b both extend in the horizontal direction. The horizontal extension increases the contact area between the upper left smoke inlet 111b and the upper right smoke inlet 112b and the oil smoke, so that the oil smoke generated during cooking on the left and right sides of the stove can be sucked in more quickly by the upper left smoke inlet 111b and the upper right smoke inlet 112b, respectively, thereby reducing the residence time of the oil smoke in the kitchen and keeping the air in the kitchen fresh.

[0102] like Figure 5 As shown, correspondingly, the auxiliary air duct 111a includes a left auxiliary air duct 1111a and a right auxiliary air duct 1112a, and the number of the rectifying parts 12 can be two, the two rectifying parts 12 are respectively a left rectifying part 12a and a right rectifying part 12b, the right rectifying part 12b and the left rectifying part 12a are respectively arranged in the smoke collecting chamber 11a along the left and right directions AA. It can be understood that the left rectifying part 12a and the right rectifying part 12b can be relatively arranged along the central axis of the smoke collecting assembly 100.

[0103] See also Figure 4 As shown in FIG5 , a left auxiliary air duct 1111a is defined between the left side rectifying member 12a and the smoke collecting hood 11. Specifically, the left side rectifying member 12a, a part of the front panel 1111, a part of the left side panel 1113 and a part of the back panel 1112 form the left auxiliary air duct 1111a, and the left auxiliary air duct 1111a connects the upper left smoke inlet 111b with the connecting port 11d; and a right auxiliary air duct 1112a is defined between the right side rectifying member 12b and the smoke collecting hood 11. Specifically, the right side rectifying member 12b, a part of the front panel 1111, a part of the right side panel 1114 and a part of the back panel 1112 form the right auxiliary air duct 1112a, and the right auxiliary air duct 1112a connects the upper right smoke inlet 112b with the connecting port 11d. The left auxiliary air duct 1111a and the right auxiliary air duct 1112a provide independent air flow channels, which can respectively process the smoke inhaled from the upper left smoke inlet 111b and the upper right smoke inlet 112b, thereby improving the smoking efficiency. The flow paths of the smoke inhaled from the upper left smoke inlet 111b and the upper right smoke inlet 112b are more reasonably distributed to avoid mutual interference between the smoke on both sides and reduce the confusion of the air flow.

[0104] Among them, in a specific use scenario, for example, in the single suction mode, due to the geometric structure of the shoulder of the smoke hood 11, the oil smoke sucked by the lower smoke inlet 11c needs to change direction to adapt to the flow path inside the smoke hood 11. This change in direction may cause the generation of vortices, affecting the smoking effect of the lower smoke inlet 11c. The left side rectifying member 12a and the right side rectifying member 12b are arranged on both sides of the smoke hood 11, so that the oil smoke flow path is smoother, that is, the left side rectifying member 12a, the right side rectifying member 12b and the smoke hood 11 define a main air duct 112a, and the main air duct 112a connects the lower smoke inlet 11c and the connecting port 11d, so that the oil smoke sucked by the lower smoke inlet 11c smoothly enters the connecting port 11d along the main air duct 112a, reducing the possibility of oil smoke generating vortices in the smoke collecting chamber 11a. Due to the optimization of the oil smoke flow path, the noise during the oil smoke flow is reduced, making the operation of the range hood 1 quieter and improving the user experience.

[0105] like Figure 5 and Fig. 9 As shown, in one embodiment, the smoke hood 11 also has a left smoke inlet 11e and a right smoke inlet 11f, the left smoke inlet 11e is arranged on the left side panel 1113 or the left side area of ​​the front panel 1111, and the right smoke inlet 11f is arranged on the right side panel 1114 or the right side area of ​​the front panel 1111; along the up and down direction CC, the left smoke inlet 11e extends between the upper left smoke inlet 111b and the lower smoke inlet 11c, and the right smoke inlet 11f extends between the upper right smoke inlet 112b and the lower smoke inlet 11c; it ensures that the smoke hood 11 can inhale oil smoke from both sides of the stove, that is, it can carry out targeted inhalation of oil smoke in a specific area, providing a more comprehensive smoking coverage, and users can enjoy a faster and more effective oil smoke suction effect.

[0106] Among them, the left auxiliary air duct 1111a is also connected to the left smoke inlet 11e, and the right auxiliary air duct 1112a is also connected to the right smoke inlet 11f, which helps to optimize the flow path of the oil smoke inhaled by the left smoke inlet 11e and the right smoke inlet 11f, so as to reduce the mutual interference of the smoke flow on both sides and reduce the generation of vortices and turbulence.

[0107] In one setting, the bottom end of the left auxiliary air duct 1111a is separated from the main air duct 112a, and the bottom end of the right auxiliary air duct 1112a is separated from the main air duct 112a. In a specific usage scenario, such as in the lower single suction mode, for example, if the bottom end of the left auxiliary air duct 1111a is separated from the main air duct 112a, it means that the bottom end of the left side rectifying member 12a close to the left auxiliary air duct 1111a completely isolates the left auxiliary air duct 1111a and the main air duct 112a, so that the oil smoke inhaled from the left side of the lower smoke inlet 11c will converge to the connecting port 11d along the guiding effect of the left side rectifying member 12a toward the main air duct 112a, thereby avoiding the oil smoke inhaled from the lower smoke inlet 11c from generating vortex in the smoke collecting chamber 11a, thereby improving the oil smoke suction efficiency of the lower smoke inlet 11c.

[0108] In another configuration, the bottom end of the left auxiliary air duct 1111a is connected to the main air duct 112a, and the bottom end of the right auxiliary air duct 1112a is connected to the main air duct 112a. In a specific usage scenario, such as in the single suction mode, for example, if the bottom end of the left auxiliary air duct 1111a is connected to the main air duct 112a, it means that the bottom end of the left fairing 12a close to the left auxiliary air duct 1111a does not extend to completely isolate the left auxiliary air duct 1111a and the main air duct 112a. a, so that the oil smoke sucked from the side of the lower smoke inlet 11c close to the left auxiliary air duct 1111a can flow into the left auxiliary air duct 1111a, and the left fairing 12a can guide the oil smoke sucked from the left side of the lower smoke inlet 11c to eliminate the vortex generated by the shoulder of the original smoke collecting hood 11 to the maximum extent, eliminate the vortex, improve the flow, and thus enhance the suction force on the left side of the lower smoke inlet 11c; at the same time, the oil smoke sucked from the center of the lower smoke inlet 11c will flow from the main air duct 112a from bottom to top into the connecting port 11d. When the bottom end of the left auxiliary air duct 1111a is connected to the main air duct 112a, the oil smoke suction force on the left side of the lower smoke inlet 11c can be enhanced, and the oil smoke in a specific area can be more effectively sucked.

[0109] It is understandable that since the left and right sides are symmetrically arranged, the effect on the left side can be explained, and the effect on the right side can be deduced by the same logic, and will not be repeated here. It is explained that the connected configuration can distribute smoke between the left auxiliary air duct 1111a, the right auxiliary air duct 1112a and the main air duct 112a, thereby enhancing the smoking effect in specific areas (such as the area near the bottom of the left auxiliary air duct 1111a and the right auxiliary air duct 1112a).

[0110] like Fig.10As shown, in one embodiment, the left smoke inlet 11e is connected to the lower smoke inlet 11c, and the right smoke inlet 11f is connected to the lower smoke inlet 11c, that is, in a "ㄩ" shape, so that the left smoke inlet 11e and the right smoke inlet 11f arranged opposite to each other on the left and right sides can work together with the lower smoke inlet 11c, thereby enhancing the ability of the range hood 1 to extract oil smoke on the left and right sides. In addition, the connected design makes the oil smoke flow path more direct, reduces the energy loss during the flow process, and improves the efficiency of the range hood 1 in extracting oil smoke.

[0111] In one embodiment, the left smoke inlet 11e and the upper left smoke inlet 111b are both arranged on the front panel 1111, and the right smoke inlet 11f and the upper right smoke inlet 112b are both arranged on the front panel 1111. The centralized design of the left smoke inlet 11e and the upper left smoke inlet 111b, and the right smoke inlet 11f and the upper right smoke inlet may facilitate the user to perform daily cleaning and maintenance, and the cleaning work can be concentrated on the front panel 1111. The left smoke inlet 11e is connected to the upper left smoke inlet 111b, and the right smoke inlet 11f is connected to the upper right smoke inlet 112b. By connecting the left smoke inlet 11e with the upper left smoke inlet 111b, and the right smoke inlet 11f with the upper right smoke inlet 112b, it is helpful to optimize the space utilization inside the smoke hood 11, making the structure more compact. The connected design also helps to reduce the interference of different directions of oil smoke inhalation, reduce the generation of vortices and turbulence, and can more effectively guide and concentrate the flow direction of oil smoke, thereby improving the smoking efficiency.

[0112] like Fig.11 As shown, in one embodiment, the connection between the left smoke inlet 11e and the upper left smoke inlet 111b is located at the upper left corner of the front panel 1111, and the connection between the right smoke inlet 11f and the upper right smoke inlet 112b is located at the upper right corner of the front panel 1111. That is, the vertical left smoke inlet 11e and the right smoke inlet 11f are respectively combined with the horizontally arranged upper left smoke inlet 111b and the upper right smoke inlet 112b. The right smoke inlet 11f and the upper right smoke inlet 112b on the right side are in a "7" shape, while the left smoke inlet 11e and the upper left smoke inlet 111b on the left side are symmetrically arranged with the right smoke inlet 11f and the upper right smoke inlet 112b on the right side, that is, in a "Γ" shape. The vertical left smoke inlet 11e and the right smoke inlet 11f are responsible for sucking in the oil smoke near the two sides of the stove, while the horizontal left smoke inlet and the right smoke inlet are responsible for sucking in the oil smoke in the rising process. Whether it is a large amount of oil smoke generated by frying or a small amount of oil smoke generated by stewing, this layout can provide efficient oil smoke extraction efficiency. And this layout can make full use of the space of the front panel 1111, ensuring that the range hood 1 provides an efficient smoking effect without occupying too much space.

[0113] like Fig.12 and Fig.13As shown, in order to further enhance the oil fume guiding function of the left side rectifying member 12a and the right side rectifying member 12b, in the structure of the left side rectifying member 12a and the right side rectifying member 12b, in one embodiment, the left side rectifying member 12a includes a left side rectifying section 121a and a left side guide section 122a which are connected to each other and arranged at an angle. The left side rectifying section 121a extends upwardly and obliquely from left to right, and the left side rectifying section 121a helps to gather the oil fume rising from the lower smoke inlet 11c. The left side guide section 122a extends upwardly and obliquely from left to right and toward the connecting port 11d from the end of the left side rectifying section 121a away from the left side plate 1113. The left side guide section 122a can guide the oil fume inhaled by the lower smoke inlet 11c and gradually change its flow direction so that it flows smoothly to the connecting port 11d.

[0114] Similarly, the right side rectifying member 12b includes a right side rectifying section 121b and a right side guide section 122b which are interconnected and arranged at an angle. The right side rectifying section 121b extends upwardly from right to left and obliquely, and the right side guide section 122b extends upwardly from right to left and obliquely from the end of the right side rectifying section 121b away from the right side plate 1114 and toward the connecting port 11d. Through the design of the left side rectifying section 121a and the left side guide section 122a, the right side rectifying section 121b and the right side guide section 122b, the oil smoke inhaled by the lower smoke inlet 11c can be effectively gathered and guided, reducing the collision of the oil smoke in the smoke collecting chamber 11a.

[0115] like Fig.14 As shown, in one embodiment, the left rectifying section 121a, the left guide section 122a, the right rectifying section 121b and the right guide section 122b are each a flat plate or an arc plate. It can be understood that the design of the flat plate is relatively simple, easy to manufacture and process, which can improve production efficiency and reduce manufacturing costs. The design of the arc plate can better guide the flow of oil smoke, and can gradually change the flow direction of the oil smoke, so that the oil smoke flows more smoothly to the connecting port 11d.

[0116] like Figure 5 and Fig.12In one embodiment, the left side rectifying section 121a is sealed and connected to the front panel 1111 and the back panel 1112, and the left side guide section 122a is sealed and connected to the front panel 1111 and the back panel 1112. The sealed connection can prevent the oil smoke from overflowing from the connection gap between the left side rectifying section 121a and the left side guide section 122a and the front panel 1111 and the back panel 1112. The oil smoke can flow according to the preset path of the left side rectifying member 12a, so that the oil smoke can be effectively guided to the connecting port 11d. Further, the left end of the left side rectifying section 121a is sealed and connected to the left side panel 1113 or is arranged at intervals. The sealed connection can prevent the oil smoke from flowing into the left side auxiliary air duct 1111a from the connection gap between the left end of the left side rectifying section 121a and the left side panel 1113, thereby ensuring the accuracy of guiding the flow of the oil smoke. The interval setting can optimize the flow of the oil smoke in certain circumstances. For example, in the single suction mode, the interval setting can enhance the suction force of the left side auxiliary air duct 1111a.

[0117] Please continue reading Fig.14 , exemplarily, along the front-to-back direction BB, the left side rectifying section 121a has a first folded edge 1211a and a second folded edge arranged opposite to each other, and a plurality of first connecting holes are provided on the first folded edge 1211a and the second folded edge, and the left side guide section 122a has a third folded edge 1221a and a fourth folded edge arranged opposite to each other, and a plurality of second connecting holes are provided on the third folded edge 1221a and the fourth folded edge, and a first plugging hole and a second plugging hole respectively adapted to the first connecting hole and the second connecting hole are provided on the front panel 1111 and the back panel 1112, and a first connecting member is inserted into the first connecting hole and the first plugging hole, and a second connecting member is inserted into the second connecting hole and the second plugging hole, so as to realize the sealed connection between the left side rectifying section 121a and the front panel 1111 and the back panel 1112, and the sealed connection between the left side guide section 122a and the front panel 1111 and the back panel 1112.

[0118] As above, the right side rectifying section 121b is sealedly connected to the front panel 1111 and the back panel 1112, and the right side guide section 122b is sealedly connected to the front panel 1111 and the back panel 1112. The right end of the right side rectifying section 121b is sealedly connected to the right side panel 1114 or spaced apart, and the relevant effects are the same as those of the left side rectifying section 121a and the left side guide section 122a, which will not be repeated here.

[0119] like Fig.12As shown, in one embodiment, along the direction from bottom to top, the first distance D1 between the left side rectifying section 121a and the right side rectifying section 121b in the left-right direction AA gradually decreases, and the second distance D2 between the left side guide section 122a and the right side guide section 122b in the left-right direction AA also gradually decreases, which makes the cross-sectional area in the main air duct 112a gradually smaller, so that the oil smoke gradually concentrates to the middle area during the rising process, which helps to gather the oil smoke inhaled by the lower smoke inlet 11c, thereby accelerating the flow speed of the oil smoke inhaled by the lower smoke inlet 11c when it flows into the connecting port 11d, thereby improving the oil smoke extraction efficiency of the range hood 1.

[0120] Please continue reading Fig.12 Furthermore, the decreasing rate of the first distance D1 is greater than the decreasing rate of the second distance D2, which helps to enhance the guiding effect of the left-side rectifying section 121a and the right-side rectifying section 121b on the incoming oil smoke, so that the smoke is more concentratedly gathered to flow to the space between the left-side guide section 122a and the right-side guide section 122b. As D1 takes effect quickly, the channel through which the oil smoke can flow becomes narrower, which can reduce the diffusion of the oil smoke to both sides. By accelerating the flow of the oil smoke, the suction force required by the fan 23 is reduced, thereby reducing the energy consumption of the range hood 1.

[0121] like Fig.12 and Fig.14 As shown, in one embodiment, the left side flow regulating member 12a further includes a left side flow stabilizing section 123a, which is connected to the end of the left side flow guiding section 122a away from the left side flow regulating section 121a, continuing the function of the left side flow guiding section 122a, and the left side flow stabilizing section 123a extends from bottom to top toward the connecting port 11d, further guiding the oil smoke to flow smoothly toward the connecting port 11d. The left side flow stabilizing section 123a extends from bottom to top toward the connecting port 11d, which is consistent with the overall flow trend of the oil smoke in the smoke collecting hood 11, and can provide a vertically upward stable flow area for the oil smoke.

[0122] Furthermore, the left-side flow stabilizing section 123a is sealed and connected to the front panel 1111 and the back panel 1112. For example, along the front-to-back direction BB, the left-side flow stabilizing section 123a has a fifth folded edge 1231a and a sixth folded edge that are relatively arranged, and a plurality of third connecting holes are provided on the fifth folded edge 1231a and the sixth folded edge. The front panel 1111 and the back panel 1112 are provided with third plugging holes that are adapted to the third connecting holes, and third connecting parts are inserted in the third connecting holes and the third plugging holes, which are used to achieve a sealed connection between the left-side flow stabilizing section 123a and the front panel 1111 and the back panel 1112. The provision of the left-side flow stabilizing section 123a can also enhance the structural stability of the left-side rectifying component 12a, and reduce the vibration of the left-side rectifying component 12a caused by the impact of oil smoke.

[0123] As above, the right flow straightener 12b also includes a right flow stabilizing section 123b, which is connected to the end of the right flow guide section 122b away from the right flow straightening section 121b, and extends from bottom to top toward the connecting port 11d. The relevant effects are the same as those of the left flow stabilizing section 123a, which will not be repeated here.

[0124] like Fig.12 As shown, in one embodiment, the left side fairing 12a satisfies one of the following conditions: a circular arc transition is arranged between the left side fairing section 121a and the left side guide section 122a; a circular arc transition is arranged between the left side guide section 122a and the left side flow stabilizing section 123a; along the up and down direction CC, the left side flow stabilizing section 123a has a first height H1, H1≥5mm.

[0125] Among them, the left side rectifying section 121a and the left side guide section 122a are set with an arc transition, which reduces the turbulence generated when the oil smoke turns between the left side rectifying section 121a and the left side guide section 122a, making the smoke flow smoother. The arc transition as a natural curve helps to guide the oil smoke to smoothly turn from the left side rectifying section 121a to the left side guide section 122a. Compared with sharp corners, the arc transition can reduce the resistance of the oil smoke during turning, increase the flow speed of the oil smoke, and reduce the possibility of oil smoke staying at the corner.

[0126] The left guide section 122a and the left flow stabilizing section 123a are arranged in an arc transition, which can reduce the eddy current generated when the oil smoke contacts the connection between the left guide section 122a and the left flow stabilizing section 123a, thereby reducing the flow resistance, allowing the oil smoke to pass smoothly through the connection between the left guide section 122a and the left flow stabilizing section 123a, avoiding collision and interference during the flow of the oil smoke.

[0127] Please continue reading Fig.12 Along the up-down direction CC, the left steady flow section 123a has a first height H1, H1≥5mm. Limiting a certain height can provide a sufficiently long stable flow area for the oil smoke, help maintain the continuity of the oil smoke flow, and reduce disordered changes in the oil smoke flow process.

[0128] In terms of the structure of the left fairing 12a, the left flow stabilizing section 123a has a certain height, which can provide better support for the left fairing 12a and improve the stability and durability of the left fairing 12a.

[0129] In one embodiment, the right side flow straightener 12b satisfies one of the following conditions: the right side flow straightener 121b and the right side flow guide 122b are arranged in an arc transition; the right side flow guide 122b and the right side flow stabilizing section 123b are arranged in an arc transition; along the up-down direction CC, the right side flow stabilizing section 123b has a second height H2, H2 ≥ 5mm. The relevant effects are the same as those of the left side flow straightener 12a, which will not be repeated here.

[0130] like Fig.15 As shown, in one embodiment, the rectifying member 12 is at least partially rotatable relative to the smoke collecting hood 11, so that at least one of the auxiliary air duct 111a and the main air duct 112a is connected to the connecting port 11d. The rectifying member 12, which is at least partially rotatable, can change its shape by rotating to plan the flow path of the oil smoke inhaled by the upper smoke inlet 11b and the lower smoke inlet 11c at different positions, reduce unnecessary interference and vortexes, and thus optimize the effect of oil smoke collection and discharge.

[0131] The at least partially rotatable rectifying member 12 can also adjust the connection state between the auxiliary air duct 111a and / or the main air duct 112a and the connecting port 11d according to actual use requirements to adapt to different cooking and fume extraction requirements to achieve the best fume extraction effect.

[0132] Exemplarily, in the setting form in which the upper smoke inlet 11b is arranged on the front panel 1111 and is long and strip-shaped, and the number of the rectifying member 12 is one, when the rectifying member 12 is a long and strip-shaped rectifying member 12 extending along the left and right sides, in the upper single suction mode, the long and strip-shaped rectifying member 12 rotates to connect the front panel 1111 and the back panel 1112, isolates the main air duct 112a and the auxiliary air duct 111a, connects the auxiliary air duct 111a and the connecting port 11d, and increases the volume of the auxiliary air duct 111a, so as to facilitate the upper smoke inlet 11b to inhale a large amount of oil smoke, more effectively guide the oil smoke to be inhaled from the upper smoke inlet 11b, and quickly pass through the auxiliary air duct 111a into the connecting port 11d, thereby improving the oil smoke suction efficiency of the upper smoke inlet 11b. In the lower single suction mode, the long strip rectifying member 12 can be rotated to cover the upper smoke inlet 11b, connecting the main air duct 112a and the connecting port 11d, and increasing the volume of the main air duct 112a, more effectively guiding the oil smoke to be sucked in from the lower smoke inlet 11c, and quickly passing through the main air duct 112a into the connecting port 11d, thereby improving the smoking efficiency of the lower smoke inlet 11c. In the upper and lower double suction mode, the long strip rectifying member 12 rotates to a position between the front panel 1111 and the back panel 1112 along the front-to-back direction BB, at which time, the auxiliary air duct 111a and the main air duct 112a are both connected to the connecting port 11d, the oil smoke flow path is optimized, and the range hood 1 provides a comprehensive smoking effect.

[0133] Please continue reading Fig.15In one embodiment, the rectifying member 12 includes a rectifying section 121 and a guide section 122 which are rotatably connected to each other, so that the guide section 122 can rotate relative to the smoke collecting hood 11. By adjusting the position of the guide section 122, the flow direction and speed of the oil smoke can be optimized, the air flow resistance and turbulence can be reduced, and the smoking efficiency can be improved. The guide section 122 can rotate to block or connect the auxiliary air duct 111a and the connecting port 11d, that is, the smoke collecting assembly 100 can change the rotation angle of the guide section 122 relative to the rectifying section 121 according to the actual cooking situation.

[0134] It can be understood that the rectifying member 12 also includes a flow stabilizing section 123, which is connected to one end of the guide section 122 away from the rectifying section 121, and the flow stabilizing section 123 extends along the up and down direction CC. When the guide section 122 rotates relative to the rectifying section 121, it drives the flow stabilizing section 123 to rotate together.

[0135] In the above-mentioned arrangement of the long strip upper smoke inlet 11b and the long strip rectifying member 12, the rectifying section 121 can be fixedly connected to the front panel 1111 and the back panel 1112, and the guide section 122 can be rotatably connected to one end of the rectifying section 121, and the rectifying section 121 can provide a stable support foundation for the long strip rectifying member 12. In the upper single suction mode, the guide section 122 rotates in the direction away from the upper smoking port, so that the auxiliary air duct 111a is connected with the connecting port 11d; in the lower single suction mode, the guide section 122 rotates in the direction close to the upper smoking port, so that the auxiliary air duct 111a is separated from the connecting port 11d; in the upper and lower double suction mode, along the front-to-back direction BB, the guide section 122 rotates to the position between the upper smoking port and the back panel 1112, so that the auxiliary air duct 111a and the main air duct 112a are both connected with the connecting port 11d.

[0136] Understandably, the servo motor can be set to ensure that the guide section 122 remains relatively stable after rotating to a suitable angle. At the same time, by setting minimum and maximum soft limits, it is ensured that the guide section 122 does not exceed a predetermined range during rotation, thereby maintaining a relative state.

[0137] like Fig.16 and Fig.17 As shown, specifically, different rotation states of the guide section 122 relative to the rectifying section 121 correspond to different working modes of the smoke collecting assembly 100. When the smoke collecting assembly 100 is in the upper single suction mode, the guide section 122 rotates to the first conducting position relative to the smoke collecting hood 11 to conduct the auxiliary air duct 111a and the connecting port 11d, thereby improving the oil smoke suction efficiency of the upper smoke inlet 11b. To avoid the interference of the lower smoke inlet 11c below the upper smoke inlet 11b sucking in oil smoke, the lower opening and closing member closes the lower smoke inlet 11c or the lifting shell 112 moves upward to close the lower smoke inlet 11c, which can also prevent oil smoke from escaping from the bottom, and is suitable for cooking methods such as steaming and stewing, where oil smoke is mainly generated at a higher position.

[0138] like Fig.18 As shown, when the smoke collecting assembly 100 is in the lower single suction mode, the lower opening and closing piece opens the lower smoke inlet 11c or the lifting shell 112 moves downward to open the lower smoke inlet 11c, that is, the suction force is concentrated on the lower smoke inlet 11c, so that the fumes generated during cooking can be quickly sucked in. At this time, the guide section 122 rotates to the closed position relative to the smoke collecting hood 11 to close the auxiliary air duct 111a and the connecting port 11d, thereby isolating the auxiliary air duct 111a and preventing the fumes sucked in by the lower smoke inlet 11c from escaping from the upper smoke inlet 11b.

[0139] like Fig.19 and Fig. 20 As shown, when the smoke collecting assembly 100 is in the upper and lower double suction mode, the guide section 122 rotates to the second conduction position relative to the smoke collecting hood 11 to conduct the auxiliary air duct 111a and the connecting port 11d, and the lower opening and closing member opens the lower smoke inlet 11c or the lifting shell 112 moves downward to open the lower smoke inlet 11c. At this time, the upper smoke inlet 11b and the lower smoke inlet 11c are opened at the same time, which can fully capture the oil smoke generated by the user during the cooking process, wherein, in the rotation direction of the guide section 122, the second conduction position is located between the first conduction position and the closed position, and the flow path of the upper smoke inlet 11b and the lower smoke inlet 11c to inhale the oil smoke is reasonably planned. The oil smoke can be effectively collected and discharged from the upper and lower directions, and the vortex and collision of the oil smoke in the smoke collecting hood 11 are reduced, thereby improving the smoking efficiency.

[0140] like Fig.15 As shown, in one embodiment, the angle between the rectifying section 121 and the guiding section 122 is α; when the guiding section 122 is in the first conducting position, α≥180, so that the volume of the auxiliary air duct 111a is in a larger state, so as to maximize the guarantee of sufficient air intake of the upper smoke inlet 11b. In this state, it can cope with light cooking scenes, such as steaming, frying steaks, etc. Avoid opening the lifting lower smoke inlet 11c to occupy too much kitchen space. And the upper smoke inlet 11b is originally away from the heat source, which can better ensure the thermal efficiency of the stove and avoid excessive heat being taken away by the lower smoke inlet 11c, reducing the thermal efficiency. Steaming, frying steaks, etc. require low air volume, which can minimize the operating noise of the range hood.

[0141] Please continue reading Fig.15 When the guide section 122 is in the closed position, α≤90°, which can ensure that the air intake of the lower smoke inlet 11c is sufficient to the maximum extent. The oil smoke is concentrated to the lower smoke inlet 11c, so that the oil smoke generated by stir-frying can be quickly sucked away. The lower smoke inlet 11c is placed downward, which can quickly suck away the oil smoke generated during cooking and prevent the oil from spreading to the user's breathing area and affecting the user's health.

[0142] Please continue reading Fig.15When the guide section 122 is in the second conducting position, 90°<α<180, so that the auxiliary air duct 111a and the main air duct 112a are both connected to the connecting port 11d, which can balance the oil fume absorption capacity of the upper smoke inlet 11b and the lower smoke inlet 11c, and adapt to various cooking methods. When the guide section 122 is in the second conducting position, the upper smoke inlet 11b and the lower smoke inlet 11c are allowed to work at the same time, which increases the oil fume absorption area and improves the oil fume absorption efficiency.

[0143] like Fig.19 and Fig.21 As shown, in the above-mentioned upper smoke inlet 11b including the upper left smoke inlet 111b and the upper right smoke inlet 112b, and in the setting form in which the number of the rectifying components 12 is two, a left-side rotating shaft 124a is provided between the left-side rectifying section 121a and the left-side guide section 122a, and a right-side rotating shaft 124b is provided between the right-side rectifying section 121b and the right-side guide section 122b. The design of the rotating shaft provides greater flexibility, so that the left-side rectifying component 12a and the right-side rectifying component 12b can be dynamically rotated and adjusted according to actual usage conditions. In the closed position, that is, in the lower single-suction mode, along the direction from top to bottom, the second distance D2 between the left guide section 122a and the right guide section 122b in the left-right direction AA gradually decreases, that is, the oil fume circulation area for the main air duct 112a tends to gradually expand. As the circulation area increases, unnecessary retention of oil fume in the smoke collecting chamber 11a can be reduced. The gradually expanding circulation area helps the flow of oil fume inhaled by the lower smoke inlet 11c, and the oil fume can be sucked away faster, and it helps to reduce the noise that may be generated by airflow acceleration.

[0144] Please continue reading Fig.21 Furthermore, in the closed position, that is, in the lower single suction mode, along the direction from top to bottom, the third distance D3 between the left steady flow section 123a and the right steady flow section 123b in the left-right direction AA gradually decreases, that is, the flow area of ​​the oil smoke flowing into the steady flow area of ​​the main air duct 112a tends to gradually expand. As the flow area increases, the resistance to the flow of oil smoke decreases, and the oil smoke flows more smoothly, avoiding unnecessary retention of oil smoke in the smoke collecting chamber 11a, thereby improving the oil smoke absorption capacity of the lower smoke inlet 11c.

[0145] Second, see Figure 1 and Figure 5 An embodiment of the present application provides a range hood 1, comprising a frame assembly 200 and a smoke collecting assembly 100 as in any of the above embodiments. The frame assembly 200 is used to accommodate components such as a fan 23 and a motor, and cooperates with the smoke collecting assembly 100 to effectively exhaust the fumes and steam generated during the cooking process.

[0146] like Fig.21As shown, the smoke collecting assembly 100 is arranged below the frame assembly 200, and the connecting port 11d connects the smoke collecting chamber 11a and the frame assembly 200, wherein the fan 23 in the frame assembly 200 is a noise source. When the noise of the fan 23 inside the frame 21 diffuses downward, the projection of the rectifying member 12 partially overlaps with the projection of the connecting port 11d along the up-down direction CC of the range hood 1, that is, the rectifying member 12 can serve as a barrier to block or reduce the noise generated by the fan 23 from diffusing downward, and by controlling the propagation direction of the noise, reducing the noise radiation to the user's activity area, reducing the sound of the range hood 1 running, and providing a quieter cooking environment for the user.

[0147] In this embodiment, the rectifying member 12 has the function of blocking noise while guiding the airflow, thus realizing the design concept of one object with multiple uses.

[0148] like Fig.18 and Fig.21 As shown, in the above-mentioned upper smoke inlet 11b including the upper left smoke inlet 111b and the upper right smoke inlet 112b, and the number of the rectifying parts 12 is two, the fan 23 is arranged in the frame assembly 200, and the noise transmitted by it is radiated into the smoke collecting chamber 11a through the connecting port 11d to cause abnormal noise. Along the left-right direction AA, the minimum distance between the left rectifying part 12a and the right rectifying part 12b is the fourth distance D4, and there is a fifth distance D5 between the left mouth wall 111d and the right mouth wall 112d of the connecting port 11d, D4<D5, that is, the distance between the left rectifying part 12a and the right rectifying part 12b is smaller than the distance between the left and right mouth walls 112d of the connecting port 11d. At this time, the left rectifying part 12a and the right rectifying part 12b can form a certain sound isolation zone at the connecting port 11d, thereby reducing the noise of the fan 23 from being directly radiated into the smoke collecting chamber 11a. This causes the sound waves to scatter when passing through the communication port 11d, thereby reducing the propagation of noise.

[0149] And in the lower single suction mode, the left guide section 122a and the right guide section 122b are rotated to the closed position relative to the smoke collecting hood 11, so that the oil fume airflow can be concentrated first and then diffused, avoiding the formation of vortex, making the oil fume airflow sucked in by the lower smoke inlet 11c flow more smoothly, thereby improving the oil fume suction efficiency.

[0150] like Fig.19As shown, in one embodiment, the projections of the left guide section 122a and the right guide section 122b along the up-down direction CC at least partially fall into the connecting port 11d. Since at least partially the projections of the left guide section 122a and the right guide section 122b fall into the connecting port 11d, a physical barrier is formed to prevent the noise transmitted by the fan 23 from entering the smoke collecting chamber 11a, thereby reducing abnormal noise. The left guide section 122a and the right guide section 122b can change the propagation mode of sound waves in the smoke collecting chamber 11a, and reduce the linear propagation of noise through reflection and absorption.

[0151] Please continue reading Fig.19 In one embodiment, the projections of the left-side steady flow section 123a and the right-side steady flow section 123b along the up-down direction CC both fall into the connecting port 11d, and the projections of the left-side steady flow section 123a and the right-side steady flow section 123b fall into the connecting port 11d, that is, the left-side steady flow section 123a and the right-side steady flow section 123b form a built-in acoustic barrier, which changes the propagation path of sound waves in the smoke collecting chamber 11a, reduces the linear propagation of noise, and helps to block the noise generated by the fan 23 from propagating downward. By blocking the noise radiated directly from the connecting port 11d, the possibility of noise propagating to the kitchen space through the upper smoke inlet 11b and the lower smoke inlet 11c is reduced. The left-side steady flow section 123a and the right-side steady flow section 123b cause the sound waves to be scattered or partially absorbed when passing through the connecting port 11d, thereby reducing the noise intensity.

[0152] In one embodiment, the rectifying member 12 includes a first rectifying plate and a second rectifying plate, the second rectifying plate is connected to the first rectifying plate to jointly form a silencer cavity, the silencer cavity can be used as a noise absorption and dispersion area, and helps to reduce the propagation of noise in the smoke hood 11; wherein, the first rectifying plate and / or the second rectifying plate has a silencer hole connected to the silencer cavity, and the setting of the silencer hole enables the silencer cavity to be connected to the external airflow, further dispersing and absorbing the noise generated in the smoke hood 11. By setting the silencer cavity and the silencer hole, the noise propagated in the smoke hood cavity 11a can be significantly reduced, thereby reducing the sound of the range hood 1 when it is running, and providing a quieter cooking environment for the user.

[0153] In one embodiment, the fairing 12 also includes a muffler, which is usually made of a porous material, such as polyurethane foam, glass fiber, rock wool or a special plastic material, which has good sound wave absorption performance. The muffler may also have a specific geometric structure, such as a labyrinth, a tortuous channel or a chamber, which is used to increase the propagation path of the sound wave in the material and improve the absorption efficiency. The muffler is arranged in the muffler cavity, and through its structure and material characteristics, it effectively absorbs and reduces the noise generated by the range hood 1.

[0154] like Fig. 22As shown, during the use of the range hood 1, the motor drives the fan 23 to form a strong negative pressure area, which can effectively suck the oil fume gas generated in the kitchen into the interior of the range hood 1. However, the grease in the oil fume tends to condense into oil droplets after passing through the strong suction force of the fan 23. These oil droplets continue to accumulate inside the frame assembly 200 with the airflow, causing the oil stains on the inner top wall of the frame assembly 200 to accumulate more and more, and will gather into oil droplets and fall. The oil stains on the side wall of the frame assembly 200 will flow downward and drip onto the guide plate 113.

[0155] In order to solve the above problem, in one implementation, please refer to Fig.23 and Fig.24 The rack assembly 200 includes a rack 21, a connecting flange 22 and a fan 23. The rack 21 serves as a supporting structure of the rack assembly 200 and provides a stable installation platform for the fan 23, the motor and other components. It is usually made of strong and durable materials, such as steel plates, aluminum alloys or other metal alloys, to withstand the force and weight generated when the equipment is running. The rack 21 can be a cube with a regular shape and is easy to clean. The upper side of the connecting flange 22 is connected to the rack 21, and the lower side of the connecting flange 22 is connected to the top plate 1115. The connecting flange 22 is connected to the bottom end of the rack 21 and together with the rack 21, a fan cavity 21a is formed. The fan cavity 21a is connected to the connecting port 11d. The fan 23 is located in the fan cavity 21a and above the connecting flange 22. The motor drives the fan 23 to form a negative pressure zone to suck the oil fume gas in the kitchen into the range hood 1.

[0156] The frame 21 includes a left mounting plate 211 and a right mounting plate 212 which are arranged relatively to each other along the left-right direction AA, and a top mounting plate 213 connecting the left mounting plate 211 and the right mounting plate 212. The range hood 1 also includes a check valve assembly 300, which is installed on the top mounting plate 213. The fan 23 has an air outlet, which passes through the mounting plate and is connected to the check valve assembly 300. The check valve assembly 300 can prevent the oil smoke generated during cooking from flowing back into the room through the air outlet of the fan 23, thereby ensuring fresh indoor air.

[0157] Please continue to refer to Fig.23 and Fig.24Further, the rack assembly 200 also includes a top oil guiding structure 24, and the top oil guiding structure 24 includes a left oil guiding structure 241 and a right oil guiding structure 242 that are connected to each other. The left oil guiding structure 241 and the right oil guiding structure 242 are arranged opposite to each other. The left oil guiding structure 241 is connected to the left mounting plate 211, and is arranged upwardly from left to right. The right oil guiding structure 242 is connected to the right mounting plate 212, and is arranged upwardly from right to left. That is, the top oil guiding structure 24 can be in a "︿" shape as a whole, so that the oil on the top mounting plate 213 can be guided from the left mounting plate 211 and the right mounting plate 212 to the lower connecting flange 22 along the top oil guiding structure 24. In this embodiment, the connecting flange 22 not only plays a connecting role, but also has an oil guiding function.

[0158] Among them, along the up-down direction CC of the range hood 1, the projection of the rectifying member 12 and the projection of the connecting flange 22 partially overlap in the connecting port 11d, so that the oil droplets of the connecting flange 22 drip onto the upper surface of the rectifying member 12 through the connecting port 11d, and a natural oil guide path is formed by the overlapping of the projection of the rectifying member 12 and the projection of the connecting flange 22, so that the oil droplets can smoothly drip from the connecting flange 22 to the rectifying member 12. It can reduce the accumulation of oil in the fan chamber 21a, keep the fan 23 and the air flow channel unobstructed, and help maintain the efficient operation of the range hood 1. In this embodiment, in addition to the functions of connection and rectification respectively, the connecting flange 22 and the rectifying member 12 can also serve as an oil guide component to guide the flow path of the oil, that is, the existing structure of the connecting flange 22 and the rectifying member 12 is utilized, and no additional oil guide component is required, which is both economical and efficient.

[0159] Please continue to refer to Fig.23 , it can be understood that the smoke collecting assembly 100 also includes an oil cup 16, which is connected to the smoke collecting hood 11. Specifically, the oil cup 16 is connected to the bottom end of the lifting shell 112 and is extended along the left-right direction AA, which can cover a wider area. The oil droplets on the upper surface of the rectifying member 12 can flow into the oil cup 16. The design of the oil cup 16 prevents the oil from dripping directly onto the stove or cooking area. Along the up-down direction CC of the range hood 1, the projection of the oil cup 16 can cover the projection of the rectifying member 12. An oil leakage hole (not shown) is provided on the upper surface of the oil cup 16. The oil collected on the rectifying member 12 can enter the oil cup 16 through the oil leakage hole, avoiding direct dripping onto the guide plate 113. Keeping the guide plate 113 clean helps maintain the smoke extraction efficiency of the range hood 1 and avoids the obstruction of the lower smoke inlet 11c from sucking in oil due to the accumulation of oil.

[0160] like Fig. 22As shown in the figure, if the flow straightener 12 is not provided, the flowing oil on the left mounting plate 211 and the right mounting plate 212 will directly drip onto the guide plate 113, while the flow straightener 12 is used in this embodiment, that is, the flow straightener 12 not only plays an important role in guiding the airflow, but also can serve as a structure for guiding the flow of oil, thereby improving the versatility of the structure. This design enables the oil to be effectively guided and concentrated by the connecting flange 22 and the flow straightener 12 in the process of entering the oil cup 16, thereby preventing the oil from accumulating in the range hood and even dripping into the food being cooked by the user.

[0161] Understandably, when the fairing 12 is also used as a physical barrier to reduce noise, the first fairing plate has an upper surface for oil flow, and the second fairing plate is stacked on the first fairing plate, arranged on the lower side of the first fairing plate, and has a silencer hole.

[0162] like Fig.25 and Fig.26 In the above-mentioned upper smoke inlet 11b including the upper left smoke inlet 111b and the upper right smoke inlet 112b, and the number of the rectifying members 12 is two, the left rectifying member 12a is arranged to be tilted downward from right to left and tilted downward from front to back; and / or the right rectifying member 12b is arranged to be tilted downward from left to right and tilted downward from front to back. The inclined design of the upper surface of the rectifying member 12 helps to guide the oil to flow in a specific direction and reduce the retention of oil on the surface of the rectifying member 12. Specifically, when the upper surfaces of the left side fairing 12a and the right side fairing 12b are both configured as described above, in the actual flow process, the oil first converges from the left side mounting plate 211 and the right side mounting plate 212 to the connecting flange 22. Along the front-to-back direction BB, the upper surfaces of the left side fairing 12a and the right side fairing 12b are both inclined, so that the oil flows along the side toward the back plate 1112, preventing the oil from accumulating on the side close to the front panel 1111. Since the upper smoke inlet 11b is provided on the front panel 1111, the oil can be prevented from blocking the upper smoke inlet 11b. Along the left-right direction AA, the oil dripping from the connecting flange 22 onto the left side fairing 12a and the right side fairing 12b can flow to the two sides of the smoke hood 11, preventing it from dripping onto the guide plate 113, reducing the possibility of the oil dripping directly onto the guide plate 113, and preventing the oil from interfering with the guide effect of the guide plate 113.

[0163] like Fig.23As shown, in one embodiment, the left guide section 122a extends from the end of the left side rectifying section 121a away from the left side plate 1113 from left to right and upward and toward the connecting port 11d, and the right guide section 122b extends from the end of the right side rectifying section 121b away from the right side plate 1114 from right to left and upward and toward the connecting port 11d, and the projections of the left guide section 122a and the right guide section 122b along the up-down direction CC at least partially fall into the connecting port 11d, which helps to control the dripping trajectory of the oil droplets, so that the dripping oil droplets can fall on the left guide section 122a and the right guide section 122b, reducing the splashing of oil droplets to the outside of the left rectifying component 12a and the right rectifying component 12b, and the left guide section 122a and the right guide section 122b inclined toward the direction of the connecting port 11d help to guide the oil pollution to flow to the left rectifying section 121a and the right rectifying section 121b respectively.

[0164] Please continue reading Fig.23 In one embodiment, the left flow stabilizing section 123a and the right flow stabilizing section 123b are both extended from bottom to top toward the connecting port 11d, and the projections of the left flow stabilizing section 123a and the right flow stabilizing section 123b along the up-down direction CC both fall into the connecting port 11d. The left flow stabilizing section 123a and the right flow stabilizing section 123b can form a barrier to prevent the oil stains dripping onto the upper surfaces of the left fairing 12a and the right fairing 12b from splashing out, thereby reducing the situation where the oil stains dripping onto the upper surface are splashed onto the guide plate 113.

[0165] It can be understood that in this embodiment, the left end of the left side rectifying section 121a is spaced from the left side plate 1113, and the right end of the right side rectifying section 121b is spaced from the right side plate 1114, so that the oil on the left side rectifying member 12a can drip through the space between the left side rectifying section 121a and the left side plate 1113, and similarly, the oil on the right side rectifying member 12b can drip through the space between the right side rectifying section 121b and the right side plate 1114. In addition, the guide plate 113 has a certain gap with the smoke collecting hood 11 on both sides along the left-right direction AA, so that the oil flowing to the ends of the left side rectifying member 12a and the right side rectifying member 12b can pass through the gap and fall into the oil leakage hole, and the oil is finally collected in the oil cup 16 below the oil leakage hole, which is convenient for regular cleaning.

[0166] Furthermore, during the rising process of the oil smoke airflow from the lower smoke inlet 11c, it will also condense into oil droplets on the lower surfaces of the left side rectifying component 12a and the right side rectifying component 12b. The inclined setting can also guide the oil droplets on the lower surfaces of the left side rectifying component 12a and the right side rectifying component 12b to the left and right sides, as well as the side close to the back plate 1112, so that the oil stains condensed on the left side rectifying component 12a and the right side rectifying component 12b can enter the oil cup 16 through the oil leakage hole.

[0167] like Fig.23 and Fig.24 Furthermore, in order to enable the oil flowing on the left mounting plate 211 of the frame 21 to directly drip onto the left fairing 12a, in one embodiment, along the left-right direction AA, there is a sixth distance D6 between the left flow stabilizing section 123a and the left mouth wall 111d of the connecting port 11d, 25mm≤D6≤35mm. By limiting the range of the sixth distance D6, it can be ensured that the oil accurately drips onto the left fairing 12a, and the oil splashing or deviation from the target area can be avoided. The appropriately sized sixth distance D6 helps to improve the efficiency of oil collection, ensure that the oil flowing on the left mounting plate 211 is effectively guided to the left fairing 12a, and reduce the pollution to other components of the range hood 1.

[0168] Same as above, please continue to refer to Fig.24 In order to allow the oil flowing on the right mounting plate 212 of the frame 21 to directly drip onto the right rectifying member 12b, a seventh distance D7 is provided between the right flow stabilizing section 123b and the right mouth wall 112d of the connecting port 11d, 25mm≤D7≤35mm. Since the left and right sides are symmetrically arranged, the effect on the left side is explained, and the effect on the right side can be deduced by the same logic, which will not be repeated here.

[0169] In one embodiment, the connecting flange 22 has a first oil guide groove 2232a located in the smoke collecting chamber 11a, the first oil guide groove 2232a extends along the left-right direction AA, and the first oil guide groove 2232a has a left notch and a right notch opposite to each other along the left-right direction AA, the left notch is directly opposite to the top of the left fairing 12a, and the right notch is directly opposite to the top of the right fairing 12b, and the oil in the first oil guide groove 2232a is discharged from the left notch and the right notch to guide the oil droplets of the connecting flange 22 to the left fairing 12a and the right fairing 12b. The first oil guide groove 2232a provides a clear oil guide path, ensuring that the oil droplets can be guided from the connecting flange 22 to the left fairing 12a and the right fairing 12b in an orderly manner, thereby preventing the oil droplets from dripping disorderly in the smoke collecting chamber 11a.

[0170] like Fig.23 and Fig. 27As shown, in one embodiment, the connecting flange 22 includes an oil receiving bottom plate 221, a surrounding plate 222 and an oil guide 223. The oil receiving bottom plate 221 is disposed below the fan 23 and arranged opposite to the top mounting plate 213 of the frame 21. The oil receiving bottom plate 221 may be a square plate, and the oil receiving bottom plate 221 is used to receive oil droplets dripping from the fan 23 area and guide the oil droplets to the oil guide 223. The surrounding plate 222 is connected to the frame 21 and the smoke hood 11, and the surrounding plate 222, the frame 21 and the smoke hood 11 may be connected by screw riveting. The enclosure 222 is arranged around the oil receiving bottom plate 221, and the enclosure 222 serves to connect and fix the oil receiving bottom plate 221. The rear side wall of the enclosure 222 and the rear side wall of the oil receiving bottom plate 221 are spaced apart to form a conducting port 22a. The conducting port 22a is embedded in the connecting port 11d to communicate with the smoke collecting chamber 11a. The oil guide member 223 is connected to the oil receiving bottom plate 221 and is located in the conducting port 22a, and has a first oil guide groove 2232a. The oil guide member 223 is used to guide the oil droplets on the oil receiving bottom plate 221 to the left side rectifying member 12a and the right side rectifying member 12b.

[0171] The oil receiving bottom plate 221 can be tilted downward from front to back, that is, tilted toward the oil guide member 223 , which can effectively guide the oil droplets dripping on the oil receiving bottom plate 221 to flow to a predetermined area and prevent the oil droplets from accumulating on the oil receiving bottom plate 221 .

[0172] Please continue to refer to Fig. 27 Furthermore, the oil guide member 223 includes a connecting plate 2231 and a slotted plate 2232. The connecting plate 2231 is connected to the rear side wall of the oil receiving bottom plate 221 and extends downward from the oil receiving bottom plate 221 toward the smoke collecting chamber 11a. The connecting plate 2231 and part of the surrounding plate 222 enclose a guide port 22a. A step surface is formed between the connecting plate 2231 and the oil receiving bottom plate 221. When the oil droplets on the oil receiving bottom plate 221 flow to the connection between the oil receiving bottom plate 221 and the connecting plate 2231, they can flow down along the connecting plate 2231 due to gravity. The slotted plate 2232 is connected to the bottom end of the connecting plate 2231 and has a first oil guide groove 2232a, so that the flowing oil droplets accumulate in the first oil guide groove 2232a, ensuring that the oil droplets can flow in a predetermined direction. The first oil guide groove 2232a of the slotted plate 2232 provides a space for accumulating and guiding the flowing oil droplets, thereby ensuring that the oil droplets can be collected efficiently.

[0173] like Fig.28 and Fig.29As shown, in one embodiment, the first oil guide groove 2232a has a groove bottom wall, and along the left-right direction AA, the groove bottom wall is an arc-shaped groove bottom wall that is higher in the middle and lower at both ends. The shape of the arc-shaped groove bottom wall that is higher in the middle and lower at both ends helps to evenly disperse the oil from the middle to the left and right sides, reduces the retention of oil droplets in the groove, accelerates the flow speed of the oil droplets, improves the oil guide efficiency, and reduces the overflow risk of the first oil guide groove 2232a caused by the accumulation of oil droplets.

[0174] Furthermore, the bottom wall of the first oil guide groove 2232a is an arc-shaped bottom wall, which can enable the oil stains dripping onto the groove wall of the first oil guide groove 2232a to first flow to the bottom wall of the first oil guide groove 2232a, and then flow to the left and right sides along the arc-shaped bottom wall, and directly drip onto the left side rectifying component 12a and the right side rectifying component 12b, thereby simplifying the collection path.

[0175] like Fig.23 As shown, in one embodiment, along the left-right direction AA, the bottom surface of the slotted plate 2232 is an arc-shaped bottom surface with a high middle and low ends. The arc-shaped bottom surface reduces the resistance of the inhaled oil smoke contacting the slotted plate 2232 during the rising process, making the rising oil smoke easier to be inhaled, thereby improving the efficiency of oil smoke absorption. Reducing the resistance can reduce the noise generated by airflow turbulence, creating a quieter use environment for users.

[0176] In one embodiment, the left edge area of ​​the oil receiving bottom plate 221 also has a left oil guide groove, which extends along the front-rear direction BB to guide the oil droplets of the connecting flange 22 to the left fairing 12a. The end of the left oil guide groove close to the connecting plate 2231 is located above the left fairing 12a, so that the oil contaminated in the left oil guide groove can directly drip onto the upper surface of the left fairing 12a. The provision of the left oil guide groove allows the oil contaminated to be concentrated in an area that is easy to observe and clean, thereby simplifying subsequent maintenance and cleaning work.

[0177] In one embodiment, the right edge area of ​​the oil receiving bottom plate 221 also has a right oil guide groove, which extends along the front-rear direction BB to guide the oil droplets of the connecting flange 22 to the right fairing 12b. The end of the right oil guide groove close to the connecting plate 2231 is located above the right fairing 12b, so that the oil contaminated by the right oil guide groove can directly drip onto the upper surface of the right fairing 12b. The right oil guide groove is provided to concentrate the oil contaminated in an area that is easy to observe and clean, thereby simplifying subsequent maintenance and cleaning work.

[0178] In one embodiment, the front edge area of ​​the oil receiving bottom plate 221 also has a front oil guide groove, which extends along the left-right direction AA, that is, it is arranged opposite to the first oil guide groove 2232a, and the front oil guide groove is connected with the left oil guide groove and / or the right oil guide groove, providing a continuous flow path for the oil, ensuring that the oil flows smoothly from the front edge of the oil receiving bottom plate 221 to both sides. The presence of the front oil guide groove reduces the accumulation of oil at the front edge of the oil receiving bottom plate 221, reduces the risk of oil droplets overflowing or dripping, and through the front oil guide groove, the oil can be more quickly guided from the front edge of the oil receiving bottom plate 221 to the second oil guide grooves on both sides, thereby improving the oil guiding efficiency.

[0179] In the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 positional 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.

[0180] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0181] In the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0182] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0183] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A range hood, characterized in that: include: A frame assembly, comprising a frame, a connecting flange and a fan, wherein the connecting flange is connected to the bottom end of the frame and together with the frame forms a fan cavity, and the fan is located in the fan cavity and above the connecting flange; A smoke collecting assembly, comprising a smoke collecting hood and a rectifying member, wherein the smoke collecting hood has a smoke collecting cavity and a connecting port, wherein the connecting port connects the smoke collecting cavity with the fan cavity, and the rectifying member is disposed in the smoke collecting cavity, and along the up-down direction of the range hood, a projection of the rectifying member and a projection of the connecting flange partially overlap in the connecting port, so that oil droplets of the connecting flange drip onto an upper surface of the rectifying member through the connecting port; There are two fairings, which are a left fairing and a right fairing respectively. The right fairing and the left fairing are respectively arranged in the smoke collecting chamber along the left and right directions. The connecting flange has a first oil guide groove located in the smoke collecting chamber, and the first oil guide groove extends along the left and right directions to guide oil droplets of the connecting flange to the left fairing and the right fairing.

2. The range hood according to claim 1, characterized in that: The smoke collecting hood further comprises an upper smoke inlet and a lower smoke inlet, both of which are connected to the smoke collecting chamber, the upper smoke inlet is higher than the lower smoke inlet, and the smoke collecting hood comprises a front panel, at least the upper smoke inlet is arranged on the front panel; The rectifying member is used to divide the smoke collecting chamber into an auxiliary air duct and a main air duct, the auxiliary air duct is connected with the upper smoke inlet and the connecting port, and the main air duct is connected with the lower smoke inlet and the connecting port.

3. The range hood according to claim 2, characterized in that: The upper smoke inlet includes an upper left smoke inlet and an upper right smoke inlet; A left auxiliary air duct is defined between the left fairing and the smoke collecting hood, and the left auxiliary air duct is connected with the upper left smoke inlet and the connecting port; as well as A right auxiliary air duct is defined between the right fairing and the smoke collecting hood, and the right auxiliary air duct is connected with the upper right smoke inlet and the connecting port; The main air duct is defined between the left side fairing, the right side fairing and the smoke collecting hood, the main air duct is connected with the lower smoke inlet and the connecting port, and the auxiliary air duct includes the left side auxiliary air duct and the right side auxiliary air duct; Wherein, the left side fairing is arranged to be tilted downward from right to left and tilted downward from front to back; and / or, the right side fairing is arranged to be tilted downward from left to right and tilted downward from front to back.

4. The range hood according to claim 1, characterized in that: The connecting flange comprises: The oil receiving bottom plate is arranged below the fan and is arranged to be inclined downward from the front to the rear; A surrounding plate is connected to the frame and the smoke collecting hood and is arranged around the oil receiving bottom plate. The rear side wall of the surrounding plate is spaced apart from the rear side wall of the oil receiving bottom plate to form a conducting port, and the conducting port is embedded in the communicating port to communicate with the smoke collecting chamber; and The oil guide member is connected to the oil receiving bottom plate and is located in the conducting port, and has the first oil guide groove.

5. The range hood according to claim 4, characterized in that: The oil guide member comprises: a connecting plate connected to the rear side wall of the oil receiving bottom plate and extending downward from the oil receiving bottom plate toward the smoke collecting chamber; and The slotted plate is connected to the bottom end of the connecting plate and has the first oil guide groove.

6. The range hood according to claim 1, characterized in that: The first oil guide groove has a groove bottom wall, and along the left-right direction, the groove bottom wall is an arc-shaped groove bottom wall that is high in the middle and low at both ends.

7. The range hood according to claim 5, characterized in that: Along the left-right direction, the bottom surface of the slotted plate is an arc-shaped bottom surface that is high in the middle and low at both ends.

8. The range hood according to claim 4, characterized in that: The left edge area of ​​the oil receiving bottom plate also has a left oil guide groove, which extends in the front-to-back direction to guide the oil droplets of the connecting flange to the left fairing; and / or, the right edge area of ​​the oil receiving bottom plate also has a right oil guide groove, which extends in the front-to-back direction to guide the oil droplets of the connecting flange to the right fairing.

9. The range hood according to claim 8, characterized in that: The front edge area of ​​the oil receiving bottom plate also has a front oil guide groove, which extends in the left-right direction and is connected to the left oil guide groove and / or the right oil guide groove.

10. The range hood according to claim 1, characterized in that: The left side fairing member comprises a left side fairing section and a left side guide section which are connected to each other and arranged at an angle, the left side fairing section extends upwardly from left to right and obliquely, and the left side guide section extends upwardly from left to right and obliquely from one end of the left side fairing section and toward the connecting port; The right side fairing member comprises a right side fairing section and a right side guide section which are connected to each other and arranged at an angle, the right side fairing section extends upwardly from right to left and obliquely, and the right side guide section extends upwardly from right to left and obliquely from one end of the right side fairing section and toward the connecting port; Wherein, the projections of the left guide section and the right guide section along the up-down direction at least partially fall into the connecting opening.

11. The range hood according to claim 10, characterized in that: The left side flow regulating member further comprises a left side flow regulating section, the left side flow regulating section is connected to an end of the left side flow guiding section away from the left side flow regulating section, and the left side flow regulating section is extended from bottom to top toward the connecting port; The right side flow straightening member further comprises a right side flow stabilizing section, the right side flow stabilizing section is connected to one end of the right side flow guiding section away from the right side flow straightening section, and the right side flow stabilizing section is extended from bottom to top toward the communication port; The projections of the left-side steady flow section and the right-side steady flow section along the up-down direction both fall into the connecting port.

12. The range hood according to claim 11, characterized in that: Along the left-right direction, there is a sixth distance D6 between the left-side steady flow section and the left wall of the connecting port, 25mm≤D6≤35mm; and / or, along the left-right direction, there is a seventh distance D7 between the right-side steady flow section and the right wall of the connecting port, 25mm≤D7≤35mm.

13. The range hood according to any one of claims 2 to 3, characterized in that: The smoke collecting hood comprises an upper cover shell and a lifting shell, the lower smoke inlet is arranged on the lifting shell, and the lifting shell can be lifted and lowered relative to the upper cover shell to open or close the lower smoke inlet.

14. The range hood according to claim 13, characterized in that: The smoke collecting hood also includes: An oil cup is connected to the bottom end of the lifting shell, and oil droplets on the upper surface of the fairing can flow into the oil cup.

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