A range hood

Abstract

The present application relates to the technical field of kitchen appliances, and discloses a range hood. The range hood comprises a rack assembly, a first flap and a second flap, the rack assembly is formed with a smoke collecting cavity, the smoke collecting cavity is provided with a smoke inlet, the first flap has a closed state and an open state of being turned over to the inside of the smoke collecting cavity, the second flap has a closed state and an open state of being turned over to the outside and the upper part of the smoke collecting cavity, in the closed state, the first flap and the second flap jointly block the smoke inlet, and the first flap is arranged above the second flap. The range hood of the present application can turn over the first flap above to the inside of the smoke collecting cavity, and turn over the second flap below to the outside of the smoke collecting cavity, which not only ensures that the range hood has a large enough negative pressure coverage area and improves the oil fume suction effect, but also avoids the interference of the flaps with the user's activities.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and more particularly to a range hood. Background Technology

[0002] As people's living standards improve, the use of range hoods is becoming increasingly widespread. A range hood includes a smoke collection chamber with a smoke inlet. Some range hoods also have a flap that closes and blocks the smoke inlet when the range hood is not in use. When the range hood is in use, the flap flips open to the outside, exposing the smoke inlet. At this time, the flap can also collect smoke.

[0003] In this structure, to avoid interfering with the movement of the user in front of the range hood when the flap is open, the size of the flap cannot be too large, thus limiting the size of the smoke inlet and consequently limiting the smoke extraction effect. Existing technology proposes a range hood with upper and lower flaps that together block the smoke inlet. The upper flap can flip outwards to gather smoke, while the lower flap flips inwards. However, the negative pressure area formed near the smoke inlet in this structure is still not large enough, and the inward flipping of the lower flap requires a large space at the lower part of the range hood, which negatively impacts the slimming effect of the range hood.

[0004] Therefore, there is an urgent need for a range hood to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a range hood in which the first flap located at the top can be flipped into the smoke collection chamber, and the second flap located at the bottom can be flipped outward from the smoke collection chamber. This not only ensures that the range hood has a sufficiently large negative pressure coverage area to improve the smoke extraction effect, but also prevents the flaps from extending too far outward, thus avoiding interference with the user's activities.

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

[0007] A range hood, comprising:

[0008] The frame assembly has a smoke collection chamber, which has a smoke inlet.

[0009] The first flap has a closed state and an open state that flips into the smoke collection chamber.

[0010] The second flap has a closed state and an open state that flips outward and upward toward the outside of the smoke collection chamber;

[0011] In the closed state, the first flap and the second flap together block the smoke inlet, and the first flap is positioned above the second flap.

[0012] As an alternative, in the open state, the lower end of the first flap overlaps with the upper end of the second flap.

[0013] As an alternative, the angle between the plane where the second flap is in the open state and the plane where the first flap is in the closed state is α, and the angle between the plane where the second flap is in the open state and the plane where the first flap is in the open state is β, where α≤β≤180°+α.

[0014] As an optional solution, when the first flap is in the open state, its inner surface faces the smoke inlet.

[0015] As an optional solution, the range hood also includes an oil cup connected to the frame assembly. When closed, the oil stains on the inner surfaces of the first and second flaps can flow into the oil cup from top to bottom.

[0016] As an optional solution, the aforementioned range hood also includes:

[0017] The first drive mechanism is connected to the frame assembly and can drive the first flap to switch between the open and closed states.

[0018] The second drive mechanism is connected to the frame assembly and can drive the second flap to switch between the open and closed states.

[0019] As an optional solution, the first drive mechanism includes a first drive source and a first rotating shaft. The first drive source is connected to the frame assembly and can output rotational motion. One end of the first rotating shaft is connected to the output end of the first drive source, and the other end is connected to the first flap.

[0020] As an optional solution, the first drive mechanism further includes a first transmission member, one end of which is connected to the inner surface of the first flap and the other end of which is connected to the first rotating shaft. The first transmission member is configured to make the inner surface of the first flap face the smoke inlet when it is open.

[0021] As an optional solution, the frame assembly includes a frame body and a smoke collection chamber assembly, wherein the smoke collection chamber assembly is disposed inside the frame body and forms the smoke collection chamber.

[0022] The first drive source is disposed between the smoke collection chamber assembly and the frame body. The first rotating shaft passes through the smoke collection chamber assembly and extends into the smoke collection chamber to connect with the first transmission component.

[0023] As an optional solution, the aforementioned second drive mechanism includes:

[0024] The second drive source is hinged to the frame assembly and can output reciprocating linear motion.

[0025] The second transmission component includes a first end, a second end, and a third end. The first end is hinged to the frame assembly, the second end is hinged to the output end of the second drive source, and the third end is connected to the inner surface of the second flap.

[0026] As an optional solution, the frame assembly includes a frame body and a smoke collection chamber assembly, wherein the smoke collection chamber assembly is disposed inside the frame body and forms the smoke collection chamber.

[0027] The second drive source is located between the smoke collection chamber assembly and the frame body.

[0028] As an optional solution, the range hood also includes a first decorative panel, which is connected to the outside of the frame assembly, and a lighting component is provided on the inside of the first decorative panel.

[0029] The beneficial effects of this invention are:

[0030] In the range hood of the present invention, when not in operation, the smoke inlet is blocked by a first flap and a second flap. When in operation, the upper first flap can be flipped into the smoke collection chamber, and the lower second flap can be flipped outward and upward from the smoke collection chamber, thereby making the smoke inlet completely open. Under the smoke-gathering effect of the second flap, the range hood has a sufficiently large negative pressure coverage area, improving the smoke extraction effect. The first flap can also guide the smoke, greatly reducing the escape of smoke from the gap between the second flap and the outer surface of the frame assembly, further improving the smoke extraction effect. In addition, only the second flap extends outward from the range hood, thereby avoiding excessive extension and preventing the flap from interfering with the user's activities or hitting the user's head. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the range hood provided in a specific embodiment of the present invention, in which both the first and second flaps are in a closed state;

[0032] Figure 2 This is an exploded view of the range hood provided in a specific embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of a range hood installed above a stove, according to a specific embodiment of the present invention.

[0034] Figure 4 This is a schematic diagram of a range hood in a smoke-collecting state according to a specific embodiment of the present invention;

[0035] Figure 5 This is a side view of the range hood in the smoke collection state provided in a specific embodiment of the present invention (with some frame components hidden);

[0036] Figure 6 This is a schematic diagram of the range hood in the second smoke collection state according to a specific embodiment of the present invention;

[0037] Figure 7 This is a side view of the range hood in the second smoke collection state provided by a specific embodiment of the present invention (with some frame components hidden);

[0038] Figure 8 This is a schematic diagram simulating the position of the first flap of the range hood in the second smoke-collecting state, provided by a specific embodiment of the present invention;

[0039] Figure 9 This is a schematic diagram of the internal structure of a range hood provided in a specific embodiment of the present invention. Figure 1 ;

[0040] Figure 10 This is a schematic diagram of the connection relationship of the first flap near the first driving component according to a specific embodiment of the present invention. Figure 1 ;

[0041] Figure 11 This is a schematic diagram of the connection relationship of the first flap near the first driving component according to a specific embodiment of the present invention. Figure 2 (Hidden smoke collection chamber components);

[0042] Figure 12 This is a schematic diagram of the connection relationship of the first flap at the end furthest from the first driving component according to a specific embodiment of the present invention;

[0043] Figure 13 This is a schematic diagram of the internal structure of the range hood when the second flap is in the closed state, provided by a specific embodiment of the present invention;

[0044] Figure 14 This is a schematic diagram of the internal structure of a range hood when the second flap is in the open state, according to a specific embodiment of the present invention.

[0045] In the picture:

[0046] 1. Frame assembly; 11. Frame body; 111. Main unit housing; 112. Outer shell; 1121. Opening; 1122. Through hole; 12. Smoke collection chamber assembly; 121. Lower shell; 1211. Smoke inlet; 1212. Clearance hole; 122. Top cover; 1221. Smoke outlet; 123. Filter screen;

[0047] 2. First flip-flop;

[0048] 3. Second flip-flop;

[0049] 4. First drive mechanism; 41. First drive source; 42. First rotating shaft; 43. First transmission component; 431. Abutment part; 432. Extension part; 44. First support base; 45. Support shaft;

[0050] 5. Second drive mechanism; 51. Second drive source; 52. Second transmission component; 521. First end; 522. Second end; 523. Third end; 53. Second support base; 54. Second rotating shaft; 55. Third support base; 56. Third rotating shaft; 57. Fourth rotating shaft;

[0051] 6. Oil cup;

[0052] 71. First decorative panel; 72. Second decorative panel;

[0053] 8. Control Panel;

[0054] 9. Stove. Detailed Implementation

[0055] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention and not the entire structure.

[0056] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0059] This embodiment provides a range hood, such as Figure 1 and Figure 2 As shown, the range hood includes a frame assembly 1, a control panel 8, and a fan (not shown). The frame assembly 1 includes a frame body 11 and a smoke collection chamber assembly 12. The frame body 11 encloses a receiving space with an opening 1121. Both the fan and the smoke collection chamber assembly 12 are housed within this receiving space. The control panel 8 is mounted on the frame assembly 1 and is used to control the operation of the fan and other electrical components and drives of the range hood. The smoke collection chamber assembly 12 encloses a smoke collection chamber with an inlet 1211 and an outlet 1221. When the smoke collection chamber assembly 12 is installed in the frame body 11, the inlet 1211 of the smoke collection chamber is directly opposite the opening 1121 of the frame body 11. The fan inlet is connected to the smoke collection chamber outlet 1221, and the fan outlet is connected to an external duct or the atmosphere. Figure 3 As shown, the range hood is usually installed above the stove 9. When the range hood is working, the fan rotates, which creates a negative pressure at the smoke inlet 1211, thereby drawing the oil fumes generated by the stove 9 into the smoke collection chamber, and finally expelling them to the external duct or the atmosphere through the fan.

[0060] In this embodiment, as Figure 2 As shown, the frame body 11 includes a main housing 111 and an outer housing 112 that are connected to each other. The smoke collection chamber assembly 12 is disposed in the outer housing 112, and the opening 1121 is disposed on the outer housing 112. The main housing 111 is disposed above the outer housing 112, and the fan is disposed inside the main housing 111. Optionally, both the main housing 111 and the outer housing 112 can be assembled from multiple sheet metal parts. Optionally, the smoke collection chamber assembly 12 includes a lower housing 121 and an upper cover 122. The lower housing 121 and the upper cover 122 together form a smoke collection chamber. The smoke inlet 1211 is disposed on the lower housing 121, and the smoke outlet 1221 is disposed on the upper cover 122. Preferably, a filter screen 123 is also provided at the smoke outlet 1221 to prevent large particles of impurities from entering the fan.

[0061] Preferably, such as Figure 1As shown, the range hood also includes a first flap 2 and a second flap 3. Both the first flap 2 and the second flap 3 are movably connected to the frame assembly 1 and each has a closed state and an open state. When the range hood is not working, both the first flap 2 and the second flap 3 are in the closed state. The first flap 2 is positioned above the second flap 3, and the first flap 2 and the second flap 3 together block the smoke inlet 1211; Figures 4-7 As shown, when the range hood is working, the first flap 2 and the second flap 3 are in the open state, thereby exposing the smoke inlet 1211. The first flap 2 flips inward toward the smoke collection chamber, and the second flap 3 flips outward and upward toward the smoke collection chamber.

[0062] The range hood in this embodiment includes at least two smoke collection states, wherein... Figure 4 and Figure 5 The diagram shows the first smoke collection state of the range hood. In this state, only the first flap 2 rotates inward into the smoke collection chamber, while the second flap 3 remains closed. This means the smoke inlet 1211 is partially open. This first smoke collection state is suitable for cooking activities that produce relatively little smoke. It should be noted that when the first flap 2 is open, one edge of the first flap 2 aligns with the upper end of the smoke inlet 1211, while the opposite edge extends inward into the smoke collection chamber. Figure 5 As shown, in the first state of smoke collection, some of the oil fumes directly enter the smoke collection chamber from the open smoke inlet 1211, and some of the oil fumes move upward along the second flap 3 to the open position of the smoke inlet 1211 and finally enter the smoke collection chamber.

[0063] Figure 6 and Figure 7 The image shows the second smoke collection state of the range hood. In this state, the upper first flap 2 flips inward into the smoke collection chamber, while the lower second flap 3 flips outward and upward from the smoke collection chamber. Figure 7As shown, in the second state of smoke collection, a portion of the oil fumes move upward along the first decorative plate 71 outside the frame assembly 1 to the smoke inlet 1211 and are sucked into the smoke collection chamber; a portion of the oil fumes move directly upward from the bottom and enter the smoke collection chamber; and a portion of the oil fumes move along the second flap 3 and the first flap 2 and then enter the smoke collection chamber. In the second smoke-gathering state, the smoke inlet 1211 is completely open, meaning there is no obstruction at the smoke inlet 1211, ensuring that the range hood has a sufficiently large negative pressure coverage area. Under the smoke-gathering action of the second flap 3, the smoke is prevented from escaping upwards, thereby improving the smoke extraction effect. The first flap 2 can also guide the smoke, greatly reducing the escape of smoke from the gap between the second flap 3 and the outer surface of the frame assembly 1, further improving the smoke extraction effect. In addition, since only the second flap 3 extends outwards from the range hood, while the first flap 2 does not extend outwards, the flap extension is not too large, thus preventing the flap from interfering with user activities or hitting the user's head.

[0064] Preferably, such as Figure 5 As shown, the first flap 2 is hinged to the frame assembly 1. When switched to the open state, the first flap 2 rotates counterclockwise around the hinge axis (i.e., the first rotating shaft 42), so that the inner surface of the first flap 2 faces the smoke inlet 1211. During the process of the range hood sucking up oil fumes, the oil fumes will be deposited on the inner surface of the first flap 2, while the outer surface of the first flap 2 will not directly contact the oil fumes. Therefore, less oil fumes are deposited on the outer surface of the first flap 2, which can reduce the frequency and burden of cleaning the first flap 2 for the user.

[0065] Preferably, such as Figure 5 As shown, the range hood also includes an oil cup 6, which is connected to the frame assembly 1. Specifically, the oil cup 6 is located below the frame body 11 and is connected to the interior of the frame body 11. When both the first flap 2 and the second flap 3 are closed, the oil droplets deposited on the first flap 2 will flow down the first flap 2 and eventually into the oil cup 6, and the oil droplets deposited on the second flap 3 will also flow into the oil cup 6. Preferably, the oil cup 6 is detachably connected to the frame body 11, thereby facilitating cleaning of the oil cup 6 by the user. The specific connection structure between the oil cup 6 and the frame body 11 can be any of the existing technologies such as plug-in connection or fastener connection, and is not specifically limited here.

[0066] Preferably, such as Figure 6 and Figure 7 As shown, in the open state, the lower end of the first flap 2 overlaps with the upper end of the second flap 3, which greatly reduces the gap between the first flap 2 and the second flap 3 at the joint, thereby preventing oil fumes from escaping from the joint of the first flap 2 and the second flap 3 and improving the range hood's fume extraction effect. In this embodiment, as... Figure 7As shown, in the open state, the upper end of the second flap 3 overlaps with the lower end of the first flap 2 on the side facing the smoke inlet 1211. It should be noted that in this embodiment, "overlap" only means that the projection of the second flap 3 on the plane of the first flap 2 overlaps with the first flap 2, and does not mean that the two are in contact. Therefore, when switching from the open state to the closed state, positional interference between the first flap 2 and the second flap 3 can be avoided.

[0067] Preferably, such as Figure 8 As shown, the angle between the plane where the second flap 3 is in the open state and the plane where the first flap 2 is in the closed state is α, and the angle between the plane where the second flap 3 is in the open state and the plane where the first flap 2 is in the open state is β, where α≤β≤180°+α. By setting β within the above range, the first flap 2 can be prevented from obstructing the airflow entering the smoke inlet 1211 as much as possible, thereby improving the smoke extraction effect of the range hood. Optionally, in this embodiment, as... Figure 7 As shown, β is 180°. In this state, the first flap 2 and the second flap 3 are parallel, so the first flap 2 will not obstruct the airflow moving upward along the second flap 3. In other embodiments, the value of β can also be greater than 180°, which is not specifically limited here.

[0068] It should be noted that when the angles between the first flap 2 and the second flap 3 and the horizontal plane are both small, the range hood is a top-mounted range hood; when the angles between the first flap 2 and the second flap 3 and the horizontal plane are large, the range hood is a side-mounted range hood.

[0069] Preferably, such as Figures 1-3 As shown, the range hood also includes a first decorative panel 71, which is installed on the outside of the outer casing 112 and positioned below the second flap 3. The first decorative panel 71 can be made of glass, which is not only aesthetically pleasing but also easy to clean. Preferably, the range hood also includes a lighting component, which creates an illuminated area below the range hood, allowing the user to see the cookware and food on the stove 9 more clearly, thus improving the user experience. Optionally, the lighting component can be used when the range hood is extracting fumes, or it can be used independently; this is not limited here. When the range hood is extracting fumes and the second flap 3 is open, the second flap 3 causes the light generated by the lighting component to be focused downwards, making it easier for the user to see the food on the stove 9 while also blocking light scattered towards the user's eyes, reducing eye strain.

[0070] Preferably, the lighting component is disposed on the back of the first decorative panel 71, and the position of the first decorative panel 71 corresponding to the lighting component is made of transparent or semi-transparent material to ensure that the light from the lighting component can illuminate the cooktop 9. This arrangement of the lighting component eliminates the need to carve additional slots in the frame assembly 1 for mounting the lighting component, and ensures a smooth outer surface of the range hood, making the range hood more aesthetically pleasing and easier for users to clean. In this embodiment, the lighting component is a long strip LED light, and the lighting component extends along the left-right direction of the range hood.

[0071] Preferably, such as Figure 1 and Figure 2 As shown, the range hood also includes a second decorative panel 72, which is connected to the outer casing 112. The second decorative panel 72 is generally U-shaped and surrounds the area above the first flap 2. In this embodiment, the first decorative panel 71, the second decorative panel 72, the first flap 2, and the second flap 3 together cover the surface of the outer casing 112 facing the cooktop 9, further improving the aesthetics of the range hood.

[0072] Preferably, such as Figure 2 and Figure 9 As shown, the range hood also includes a first drive mechanism 4, which is connected to the frame assembly 1 and can drive the first flap 2 to switch between an open state and a closed state. In this embodiment, as... Figures 9-11 As shown, the first drive mechanism 4 includes a first drive source 41 and a first rotating shaft 42. The first drive source 41 is connected to the frame assembly 1 and can output rotational motion. One end of the first rotating shaft 42 is connected to the output end of the first drive source 41, and the other end is connected to the first flap 2. During the process of the first drive source 41 driving the first rotating shaft 42 to rotate, the first rotating shaft 42 drives the first flap 2 to rotate, thereby enabling the first flap 2 to switch between an open state and a closed state. Optionally, in this embodiment, the first drive source 41 is a motor.

[0073] Preferably, such as Figure 9 As shown, the first drive source 41 is positioned between the smoke collection chamber assembly 12 and the frame body 11, that is, the first drive source 41 is positioned outside the smoke collection chamber, thereby preventing excessive oil fumes from accumulating on the first drive source 41 and causing it to malfunction. Figure 10 As shown, the smoke collection chamber assembly 12 is provided with a clearance hole 1212. The first rotating shaft 42 passes through the clearance hole 1212 from the position between the smoke collection chamber assembly 12 and the frame body 11 and extends into the smoke collection chamber, so that it can be connected with the first flap 2.

[0074] Preferably, such as Figure 5 , Figure 10 and Figure 11As shown, the first driving mechanism 4 also includes a first transmission member 43. One end of the first transmission member 43 is connected to the inner surface of the first flap 2, and the other end is connected to the first rotating shaft 42. The first transmission member 43 adjusts the rotation radius of the first flap 2, so that the inner surface of the first flap 2 faces the smoke inlet 1211 when it is open. In this embodiment, the first transmission member 43 includes an abutment portion 431 and an extension portion 432. The abutment portion 431 is connected to the inner surface of the first flap 2, and the extension portion 432 is constructed in a "V" shape, with the included angle of the "V" being an obtuse angle. Optionally, the abutment portion 431 and the first flap 2 can be connected by means of bonding, fastener connection, etc., which is not specifically limited here. Figure 5 As shown, when the first drive source 41 drives the first flap 2 to rotate clockwise, the first flap 2 switches from the open state to the closed state. When the first drive source 41 drives the first rotating shaft 42 to rotate counterclockwise, the first flap 2 rotates counterclockwise around the first rotating shaft 42 and switches from the closed state to the open state.

[0075] In this embodiment, as Figure 9 As shown, the first drive mechanism 4 includes two first transmission components 43, which are respectively disposed at both ends of the first flap 2 in the left-right direction. That is, one of the first transmission components 43 is disposed at the end closer to the first drive source 41, and the other first transmission component 43 is disposed at the end farther away from the first drive source 41.

[0076] Preferably, such as Figure 12 As shown, the first driving mechanism 4 also includes a first support base 44 and a support shaft 45. The first support base 44 is connected to the frame body 11, and the first support base 44 and the first driving source 41 are respectively disposed on the left and right sides of the smoke collection chamber assembly 12. The support shaft 45 is rotatably supported on the first support base 44 and is coaxially disposed with the first rotating shaft 42. The support shaft 45 is connected to the first transmission member 43 away from the first driving source 41. At this time, the left and right ends of the first flap 2 are supported by the first transmission member 43 and the first rotating shaft 42, and the first transmission member 43 and the support shaft 45, respectively. During the process of the first driving source 41 driving the first flap 2 to rotate, both the left and right ends of the first flap 2 can be supported, thereby ensuring the stability of the rotation of the first flap 2. In this embodiment, the first support base 44 is also disposed between the smoke collection chamber assembly 12 and the frame body 11, and the smoke collection chamber assembly 12 is provided with holes for the support shaft 45 to pass through.

[0077] Preferably, such as Figure 13 and Figure 14 As shown, the range hood also includes a second drive mechanism 5, which is connected to the frame assembly 1 and can drive the second flap 3 to switch between an open and closed state. Specifically, as... Figure 13 and Figure 14As shown, the second drive mechanism 5 includes a second drive source 51 and a second transmission member 52. The second drive source 51 is hinged to the frame assembly 1 and can output reciprocating linear motion. The second transmission member 52 is approximately "V"-shaped and includes a first end 521, a second end 522, and a third end 523. The first end 521 of the second transmission member 52 is hinged to the frame assembly 1, the second end 522 of the second transmission member 52 is hinged to the output end of the second drive source 51, and the third end 523 of the second transmission member 52 is connected to the inner surface of the second flap 3. Figure 13 As shown, when the output terminal of the second drive source 51 is in the extended state, the second flap 3 is in the closed state; as Figure 14 As shown, when the output end of the second drive source 51 is in the retracted state, the second flap 3 is in the open state. In this embodiment, the second drive source 51 can be an electric cylinder, which is a mature existing drive component, and its specific structure will not be described in detail here. Preferably, the second drive source 51 is located between the frame body 11 and the smoke collection chamber assembly 12, that is, the second drive source 51 is located outside the smoke collection chamber, thereby avoiding excessive oil fume deposition on the second drive source 51, which would cause the second drive source 51 to malfunction.

[0078] In this embodiment, as Figure 13 and Figure 14 As shown, the second drive mechanism 5 further includes a second support base 53 and a second rotating shaft 54. The second support base 53 is connected to the frame body 11, and the second rotating shaft 54 ​​is rotatably supported on the second support base 53. The second drive source 51 is connected to the second rotating shaft 54, thereby achieving a hinge connection between the second drive source 51 and the frame assembly 1, so that the second drive source 51 can rotate relative to the frame body 11. Preferably, as Figure 14 As shown, the second drive mechanism 5 also includes a third support base 55 and a third rotating shaft 56. The third support base 55 is connected to the frame body 11, and the third rotating shaft 56 is rotatably supported on the third support base 55. The first end 521 of the second transmission member 52 is connected to the third rotating shaft 56, thereby achieving a hinge connection between the first end 521 of the second transmission member 52 and the frame assembly 1. In this embodiment, as... Figure 2 and Figure 14 As shown, a through hole 1122 is provided on the frame body 11. The third end 523 of the second transmission member 52 passes through the through hole 1122 and extends out of the frame assembly 1, and is connected to the inner surface of the second flip plate 3. The second drive mechanism 5 also includes a fourth rotating shaft 57. The second drive source 51 is hinged to the second end 522 of the second transmission member 52 through the fourth rotating shaft 57.

[0079] Preferably, such as Figure 2 and Figure 13As shown, the second drive mechanism 5 includes two second transmission components 52, and correspondingly provides two third support seats 55 and two third rotating shafts 56. The two second transmission components 52 are respectively located at the left and right ends of the second flap 3, and the two third support seats 55 are respectively located at the left and right ends of the second flap 3. That is, one third support seat 55 is located at the end closer to the second drive source 51, and the other third support seat 55 is located at the end farther from the second drive source 51. Each third rotating shaft 56 is rotatably mounted on a corresponding third support seat 55. The connection relationship of one second transmission component 52 is as described above, while the other second transmission component 52 is not connected to the second drive source 51. Specifically, the first end 521 of the second transmission component 52 is hinged to the third support seat 55 farther from the second drive source 51 through the corresponding third rotating shaft 56, the third end 523 of the second transmission component 52 is connected to the inner surface of the second flap 3, and the second end 522 of the second transmission component 52 is not connected to any structure. In this embodiment, the purpose of setting two sets of second transmission components 52 and third support base 55 is to make the support and rotation of the second flap 3 more stable.

[0080] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, based on the concept of the present invention, there will be changes in specific implementation methods and application scope. The content of this specification should not be construed as a limitation of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A range hood, characterized in that, include: A frame assembly (1) is formed with a smoke collection chamber having a smoke inlet (1211); The first flap (2) has a closed state and an open state that flips into the smoke collection chamber; The second flap (3) has a closed state and an open state that flips outward and upward toward the outside of the smoke collection chamber; In the closed state, the first flap (2) and the second flap (3) together block the smoke inlet (1211), and the first flap (2) is positioned above the second flap (3).

2. The range hood as described in claim 1, characterized in that, In the open state, the lower end of the first flap (2) overlaps with the upper end of the second flap (3).

3. The range hood as described in claim 1, characterized in that, The angle between the plane where the second flap (3) is in the open state and the plane where the first flap (2) is in the closed state is α, and the angle between the plane where the second flap (3) is in the open state and the plane where the first flap (2) is in the open state is β, where α≤β≤180°+α.

4. The range hood as described in claim 1, characterized in that, In the open state, the inner surface of the first flap (2) is positioned facing the smoke inlet (1211).

5. The range hood as described in claim 4, characterized in that, The range hood also includes an oil cup (6) connected to the frame assembly (1). In the closed state, the oil stains on the inner surface of the first flap (2) and the inner surface of the second flap (3) can flow into the oil cup (6) from top to bottom.

6. The range hood according to any one of claims 1-5, characterized in that, The range hood also includes: The first drive mechanism (4) is connected to the frame assembly (1) and can drive the first flap (2) to switch between the open state and the closed state; The second drive mechanism (5) is connected to the frame assembly (1) and can drive the second flap (3) to switch between the open state and the closed state.

7. The range hood as described in claim 6, characterized in that, The first drive mechanism (4) includes a first drive source (41) and a first rotating shaft (42). The first drive source (41) is connected to the frame assembly (1) and can output rotational motion. One end of the first rotating shaft (42) is connected to the output end of the first drive source (41), and the other end is connected to the first flip plate (2).

8. The range hood as described in claim 7, characterized in that, The first drive mechanism (4) further includes a first transmission member (43), one end of which is connected to the inner surface of the first flap (2) and the other end is connected to the first rotating shaft (42). The first transmission member (43) is configured to make the inner surface of the first flap (2) face the smoke inlet (1211) when it is open.

9. The range hood as described in claim 8, characterized in that, The frame assembly (1) includes a frame body (11) and a smoke collection chamber assembly (12), the smoke collection chamber assembly (12) being disposed inside the frame body (11) and forming the smoke collection chamber; The first drive source (41) is disposed between the smoke collection chamber assembly (12) and the frame body (11), and the first rotating shaft (42) passes through the smoke collection chamber assembly (12) and extends into the smoke collection chamber to connect with the first transmission member (43).

10. The range hood as described in claim 6, characterized in that, The second drive mechanism (5) includes: The second drive source (51) is hinged to the frame assembly (1), and the second drive source (51) can output reciprocating linear motion; The second transmission component (52) is V-shaped and includes a first end (521), a second end (522) and a third end (523). The first end (521) is hinged to the frame assembly (1), the second end (522) is hinged to the output end of the second drive source (51), and the third end (523) is connected to the inner surface of the second flap (3).

11. The range hood as described in claim 10, characterized in that, The frame assembly (1) includes a frame body (11) and a smoke collection chamber assembly (12), the smoke collection chamber assembly (12) being disposed inside the frame body (11) and forming the smoke collection chamber; The second drive source (51) is disposed between the smoke collection chamber assembly (12) and the frame body (11).

12. The range hood according to any one of claims 1-5, characterized in that, The range hood also includes a first decorative panel (71), which is connected to the outside of the frame assembly (1), and a lighting assembly is provided on the inside of the first decorative panel (71).

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