Range hood

Abstract

The invention relates to the technical field of kitchen appliances, and discloses a range hood. The range hood comprises a shell, a turning plate assembly and a filter screen assembly, a first smoke inlet and a second smoke inlet are formed in the shell, and the first smoke inlet is located above the second smoke inlet; the turning plate assembly comprises a first turning plate and a second turning plate, the first turning plate and the second turning plate are rotationally connected with the shell, the first turning plate is used for closing or opening the first smoke inlet, and the second turning plate is used for closing or opening the second smoke inlet; the filter screen assembly is arranged in the shell and located at the first smoke inlet and the second smoke inlet, the filter screen assembly and the turning plate assembly are arranged in a spaced mode, and the filter screen assembly is configured to be capable of driving the first turning plate and / or the second turning plate to turn over. The filter screen assembly can serve as a driving structure of the first turning plate and the second turning plate and can also play a role in filtering oil fume, compared with the prior art, a transmission mechanism with a complex structure is omitted, the structure is simple, arrangement is ingenious, and the extractor hood is good in adaptability to different working conditions.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen appliances, and in particular to a range hood. Background Art

[0002] Range hoods are widely used electrical appliances in kitchens to exhaust fumes generated during cooking. Range hoods usually include a housing and a flap assembly. A smoke inlet is formed on the housing. When the range hood is not working, the flap assembly is in a closed state to block the smoke inlet; when the range hood is working, the flap assembly is in an open state to flip outward and open the smoke inlet, and the flap assembly can play a role in collecting smoke.

[0003] As people's requirements for living standards and quality of life improve, they have higher requirements on the smoke extraction effect of range hoods. At the same time, they hope that the range hoods can adapt their functions according to the specific circumstances of use, so as to achieve a corresponding balance among the smoke extraction effect, energy saving, convenience or appearance.

[0004] In order to meet the above requirements, some range hoods with multiple flaps have been launched on the market. The flap assembly includes a first flap and a second flap. The first flap can be flipped outward at a certain angle relative to the shell, and the second flap can be further flipped outward relative to the first flap, thereby expanding the smoke collection area and ensuring a better smoke collection effect. However, these products use a power mechanism + transmission mechanism to drive the opening and closing of multiple flaps. The structure is complex, difficult to disassemble and repair, and has poor adaptability to different operating conditions. In addition, a fume filtration structure is generally required at the smoke inlet, which increases the complexity of the structure and the difficulty of maintenance, affecting the user experience.

[0005] Therefore, there is an urgent need for a range hood to solve the above-mentioned technical problems. Summary of the invention

[0006] The purpose of the present invention is to provide a range hood with a simple structure, ingenious arrangement and good adaptability to different working conditions.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] A range hood, comprising:

[0009] A housing, on which a first smoke inlet and a second smoke inlet are disposed, and the first smoke inlet is located above the second smoke inlet;

[0010] a flap assembly, comprising a first flap and a second flap, wherein the first flap and the second flap are rotatably connected to the housing, respectively, the first flap is used to close or open the first smoke inlet, and the second flap is used to close or open the second smoke inlet; and,

[0011] A filter assembly is arranged inside the shell and located at the first smoke inlet and the second smoke inlet. The filter assembly is spaced apart from the flap assembly and is configured to drive the first flap and / or the second flap to flip.

[0012] As a preferred technical solution for the above-mentioned range hood, the filter assembly includes a first filter, a second filter and a third filter which are rotated and connected in sequence from top to bottom, the first filter is configured to drive the first flap to flip, and the second filter and the third filter are configured to drive the second flap to flip.

[0013] As a preferred technical solution of the above range hood, the connection position between the first filter screen and the second filter screen is higher or lower than the lower edge of the first flap; and / or,

[0014] The connection position between the second filter screen and the third filter screen is lower than the upper edge of the second flap and higher than the lower edge of the second flap.

[0015] As a preferred technical solution of the above range hood, when the first smoke inlet is opened, the first filter is perpendicular to the smoke flow direction; and / or,

[0016] When the second smoke inlet is opened, the third filter screen is perpendicular to the smoke flow direction.

[0017] As a preferred technical solution for the above-mentioned range hood, the filter assembly also includes a first drive unit and a second drive unit, the output end of the first drive unit is connected to the first filter, the output end of the second drive unit is connected to the second filter or the third filter or the connection position of the second filter and the third filter, and the connection point of the first filter and the second filter is fixed to the shell.

[0018] As a preferred technical solution of the above range hood, the length of the third filter is not less than twice the driving stroke of the second driving unit.

[0019] As a preferred technical solution of the above range hood, the output end of the first driving unit is connected to the upper part of the first filter.

[0020] As a preferred technical solution of the above-mentioned range hood, the filter assembly further includes a limiting structure, and the limiting structure is connected to the third filter to constrain the movement trajectory of the third filter.

[0021] As a preferred technical solution of the above range hood, the limiting structure includes at least one limiting member, and at least one limiting member is arranged on a side of the third filter screen facing the second smoke inlet and can always maintain contact with the third filter screen.

[0022] As a preferred technical solution of the above range hood, the limiting structure includes two limiting members, the two limiting members are arranged at an interval, and the third filter is movably arranged between the two limiting members.

[0023] The beneficial effects of the present invention are:

[0024] The range hood of the present invention comprises a shell, a flap assembly and a filter assembly, the shell is provided with a first smoke inlet and a second smoke inlet, and the first smoke inlet is located above the second smoke inlet; the flap assembly comprises a first flap and a second flap, the first flap and the second flap are respectively rotatably connected to the shell, the first flap is used to close or open the first smoke inlet, and the second flap is used to close or open the second smoke inlet; the filter assembly is arranged inside the shell and located at the first smoke inlet and the second smoke inlet, the filter assembly is spaced apart from the flap assembly, and the filter assembly is configured to be able to drive the first flap and / or the second flap to flip. The filter assembly under this structure can serve as a driving structure for the first flap and the second flap, and can also filter and purify the oil fume. Compared with the prior art, it eliminates the complex transmission mechanism, has a simple structure and is cleverly arranged. In addition, the filter assembly can also selectively drive the first flap and / or the second flap to flip. Therefore, the user can open the first flap and / or the second flap according to actual usage conditions, such as oil fume concentration and pot height, so as to realize the separate opening or simultaneous opening of the first smoke inlet and the second smoke inlet to adapt to different usage scenarios, improve the adaptability of the range hood to different working conditions, and thus improve the user's satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic cross-sectional structural diagram of a range hood in a closed state provided by a specific embodiment of the present invention;

[0026] Figure 2 is a schematic cross-sectional structural diagram of a range hood provided by a specific embodiment of the present invention in a first half-open state;

[0027] Figure 3 is a schematic cross-sectional structural diagram of a range hood provided by a specific embodiment of the present invention in a fully open state;

[0028] Figure 4 It is a schematic cross-sectional structural diagram of a range hood provided by a specific embodiment of the present invention in a second half-open state.

[0029] In the figure:

[0030] 1. Shell; 2. First flap; 3. Second flap; 4. First filter; 5. Second filter; 6. Third filter; 7. First drive unit; 8. Second drive unit; 9. Limiting member; 10. First hinge; 11. Second hinge; 12. Oil fume concentration sensor; 13. Height sensor. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, 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 the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] 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.

[0037] like Figures 1 to 4 As shown, this embodiment provides a range hood, which includes a housing 1, a flap assembly and a filter assembly. The housing 1 is provided with a first smoke inlet and a second smoke inlet, and the first smoke inlet is located above the second smoke inlet; the flap assembly includes a first flap 2 and a second flap 3, the first flap 2 and the second flap 3 are rotatably connected to the housing 1 respectively, the first flap 2 is used to close or open the first smoke inlet, and the second flap 3 is used to close or open the second smoke inlet; the filter assembly is arranged inside the housing 1 and is located at the first smoke inlet and the second smoke inlet, the filter assembly is spaced apart from the flap assembly, and the filter assembly is configured to be able to drive the first flap 2 and / or the second flap 3 to flip. In this embodiment, the first smoke inlet and the second smoke inlet face forward (the descriptions of the front, back, left, right, top, bottom, etc. in this embodiment are all relative to the user when the range hood is in use).

[0038] The filter assembly in the present embodiment can serve as a driving structure for the first flap 2 and the second flap 3, and can also filter and purify the oil fume. Compared with the prior art, it omits the complex transmission mechanism, has a simple structure and is cleverly arranged. In addition, the filter assembly can also selectively drive the first flap 2 and / or the second flap 3 to flip. Therefore, the user can open the first flap 2 and / or the second flap 3 according to the actual usage conditions, such as the oil fume concentration and the height of the pot, so as to realize the separate opening or simultaneous opening of the first smoke inlet and the second smoke inlet to adapt to different usage scenarios, improve the adaptability of the range hood to different working conditions, and thus improve the user's satisfaction.

[0039] The first flap 2 includes a first flap body and a first decorative plate, and the first decorative plate covers the outer surface of the first flap body. The first flap body can be made of sheet metal with good strength, so as to ensure the overall structural strength of the first flap 2. The first decorative plate can be made of glass, which is not only beautiful but also easy to clean. Optionally, the first flap body and the first decorative plate can be fixed by bonding.

[0040] Similarly, the second flap 3 includes a second flap body and a second decorative plate, and the second decorative plate covers the outer surface of the second flap body. The second flap body can be made of sheet metal with good strength, so as to ensure the overall structural strength of the second flap 3. The second decorative plate can be made of glass, which is not only beautiful but also easy to clean. Optionally, the second flap body and the second decorative plate can be fixed by bonding.

[0041] Optionally, the first flap 2 is connected to the housing 1 via a first hinge 10, specifically, the first flap body is rotatably connected to the housing 1 via the first hinge 10. The second flap 3 is connected to the housing 1 via a second hinge 11, specifically, the second flap body is rotatably connected to the housing 1 via the second hinge 11. The hinge connection structure is simple, low-cost, and easy to implement.

[0042] In this embodiment, the filter assembly can drive the first flap 2 and / or the second flap 3 to flip, specifically, the filter assembly can rotate forward to apply force to the first flap 2 and / or the second flap 3, so as to push the first flap 2 and / or the second flap 3 outward. Specifically, the filter assembly includes a first filter 4, a second filter 5 and a third filter 6 that are connected and rotated from top to bottom in sequence, the first filter 4 is configured to drive the first flap 2 to flip, and the second filter 5 and the third filter 6 are configured to drive the second flap 3 to flip. This structure allows the first filter 4 to rotate relative to the second filter 5 and the third filter 6, so as to push the first flap 2 forward, so that the first flap 2 is turned outward to open the first smoke inlet, and the second filter 5 and the third filter 6 are rotated relative to the first filter 4, so as to push the second flap 3 forward, so that the second flap 3 is turned outward to open the second smoke inlet. In this embodiment, the first filter screen 4 and the second filter screen 5, and the second filter screen 5 and the third filter screen 6 are all hingedly connected, and both are realized by a rotating shaft.

[0043] The first filter screen 4, the second filter screen 5 and the third filter screen 6 are rotated and connected in sequence to form a filter screen with two bending positions on one side, one bending position is the connection position of the first filter screen 4 and the second filter screen 5, and the other bending position is the connection position of the second filter screen 5 and the third filter screen 6. In order to realize that the first filter screen 4 drives the first flap 2 to turn outward, the connection position of the first filter screen 4 and the second filter screen 5 is higher or lower than the lower edge of the first flap 2. In order to realize that the second filter screen 5 and the third filter screen 6 drive the second flap 3 to turn outward, the connection position of the second filter screen 5 and the third filter screen 6 is lower than the upper edge of the second flap 3 and higher than the lower edge of the second flap 3. Regarding the connection position of the first filter 4 and the second filter 5, when it is designed to be lower than the lower edge of the first flap 2, it cannot exceed 1 / 2 of the height of the second flap 3, that is, the connection position of the first filter 4 and the second filter 5 cannot be designed too low (that is, the length of the first filter 4 is too long and the length of the second filter 5 is too short). If the connection position is designed too low, for example, lower than 1 / 2 of the height of the second flap 3, it will affect the opening of the second flap 3, causing the second flap 3 to be unable to open normally or not open in place. Therefore, when designing the length of the first filter 4 and the length of the second filter 5, it is necessary to comprehensively consider whether it will affect the smooth opening of the first flap 2 and the second flap 3.

[0044] In order to realize the rotation of the filter assembly, the filter assembly also includes a first drive unit 7 and a second drive unit 8. The output end of the first drive unit 7 is connected to the first filter 4 to drive the first filter 4 to rotate. The output end of the second drive unit 8 is connected to the second filter 5, or the third filter 6, or the connection position of the second filter 5 and the third filter 6. The hinge point of the first filter 4 and the second filter 5 is fixed to the shell 1, that is, during the opening and closing process of the first flap 2 and the second flap 3, the position of the hinge point does not change, so as to ensure that the first filter 4 and the second filter 5 can rotate around the hinge point and ensure the stability of the rotation process. Specifically, the rotating shaft between the first filter 4 and the second filter 5 is fixedly connected to the shell 1 to achieve the fixation of the hinge point. When the output end of the second drive unit 8 is connected to the second filter screen 5, the second drive unit 8 directly drives the second filter screen 5 to rotate to push open the second flap 3. When the output end of the second drive unit 8 is connected to the third filter screen 6, the second drive unit 8 directly drives the third filter screen 6 to rotate to push open the second flap 3. When the output end of the second drive unit 8 is connected to the connection position of the second filter screen 5 and the third filter screen 6, the second drive unit 8 drives the second filter screen 5 and the third filter screen 6 to rotate simultaneously, so that the connection position of the two opens the second flap 3. In this embodiment, the output end of the second drive unit 8 is connected to the connection position of the second filter screen 5 and the third filter screen 6.

[0045] Optionally, the first drive unit 7 and the second drive unit 8 in this embodiment are both push rod motors, which have a simple structure and are easy to install.

[0046] In this embodiment, when the first smoke inlet is opened, the first filter 4 is perpendicular to the flow direction of the smoke, has a good filtering effect on the smoke, and is conducive to the oil smoke entering the interior of the housing 1 along the optimal oil smoke path, which can improve the smoking effect. When the second smoke inlet is opened, the third filter 6 is perpendicular to the flow direction of the smoke, has a good filtering effect on the smoke, and is conducive to the oil smoke entering the interior of the housing 1 along the optimal oil smoke path, which can improve the smoking effect. By setting the second filter 5, part of the smoke is filtered once more, the filtering effect is further improved, and the filtering area and air inlet area of ​​the filter assembly are increased, which can improve the filtering efficiency of the oil smoke and the smoking effect.

[0047] In order to realize that the first filter screen 4 is perpendicular to the smoke flow direction when the first smoke inlet is opened, and in order to shorten the driving stroke of the first driving unit 7, the output end of the first driving unit 7 is connected to the upper part of the first filter screen 4. For example, the connection position between the output end of the first driving unit 7 and the first filter screen 4 is close to the upper edge of the first filter screen 4, about 1 / 10 of the distance from the upper edge. Of course, the specific connection position can be designed according to actual needs.

[0048] The filter assembly in this embodiment also includes a limiting structure, which is connected to the third filter 6. On the one hand, it can support the third filter 6 and promote the effective movement of the entire filter assembly. On the other hand, it can also constrain the movement trajectory of the third filter 6.

[0049] Specifically, in this embodiment, one end of the third filter screen 6 is connected to the second filter screen 5, and the other end of the third filter screen 6 is a free end, and its position is not fixed. During the work of the second drive unit 8, the third filter screen 6 not only has rotational movement, but also has displacement in the front-back direction, that is, the movement of the third filter screen 6 includes rotation and translation. Therefore, in order to prevent the third filter screen 6 from losing its constraint due to excessive displacement during the translation process, thereby causing the entire filter assembly to fail in movement, the length of the third filter screen 6 is designed to be no less than twice the driving stroke of the second drive unit 8. In this way, during the process of the second drive unit 8 driving the second filter screen 5 and the third filter screen 6 to move, the third filter screen 6 can always remain connected to the limiting structure.

[0050] The limiting structure includes at least one limiting member 9, which is arranged on the side of the third filter screen 6 facing the second smoke inlet and can always keep in contact with the third filter screen 6 to prevent the third filter screen 6 from being separated from the limiting member 9. The limiting member 9 is arranged on the side of the third filter screen 6 facing the second smoke inlet, and can support and guide the third filter screen 6 during its movement.

[0051] The limiting structure in this embodiment includes two limiting members 9, which are arranged at intervals, and the third filter screen 6 is movably arranged between the two limiting members 9. The two limiting members 9 are respectively located on both sides of the third filter screen 6, which play a limiting role on the third filter screen 6, making the movement process of the third filter screen 6 more stable and reliable.

[0052] The limiting member 9 may be, but is not limited to, a limiting rod, which is extended along the width direction of the housing 1, i.e., the left-right direction. The cross section of the limiting rod is circular, i.e., the limiting rod is a cylindrical limiting rod, and the arc surface contacts the third filter screen 6, which can reduce friction and make the movement of the third filter screen 6 smoother. Both ends of the limiting rod are connected to the inner wall of the housing 1, respectively.

[0053] In order to prevent the contact friction between the stopper 9 and the third filter screen 6 from causing damage to the surface of the third filter screen 6 , a flexible pad, such as a rubber pad or a silicone pad, may be provided on the surface of the stopper 9 .

[0054] The working process of the range hood in this embodiment is described below.

[0055] like Figures 2 to 4 As shown, first, the push rod of the second driving unit 8 extends, pushing the second filter 5 and the third filter 6 to move to push open the second flap 3, the second smoke inlet is opened, and the first smoke inlet is in a closed state, which is the first half-open state, refer to Figure 2 Then, the push rod of the first drive unit 7 extends, pushing the first filter 4 to rotate to open the first flap 2, and the first smoke inlet is opened, which is now in a fully open state, refer to Figure 3 Of course, the push rod of the first driving unit 7 may be extended first, pushing the first filter screen 4 to rotate to push open the first flap 2, the first smoke inlet is opened, and the second smoke inlet is in a closed state. At this time, it is the second half-open state, refer to Figure 4 Then, the push rod of the second driving unit 8 extends out, pushing the second filter 5 and the third filter 6 to move to open the second flap 3, and the second smoke inlet is opened, which is now in a fully open state.

[0056] The difference between the first half-open state and the second half-open state is that they are applicable to pots of different heights. Specifically, when the pot is high, such as a steamer, the second half-open state can be selected to prevent the operator's hand from touching the second flap 3 when operating the pot, or the pot itself from interfering with the second flap 3; when the pot is low, such as an ordinary frying pan, the first half-open state is selected, and the second smoke inlet is close to the pot, which can better absorb the smoke and prevent the smoke from escaping.

[0057] When the range hood is turned off, the push rod of the first drive unit 7 may be retracted first to close the first smoke inlet, and the push rod of the second drive unit 8 may be retracted later to close the second smoke inlet. Of course, the push rod of the second drive unit 8 may be retracted first to close the second smoke inlet, and the push rod of the first drive unit 7 may be retracted later to close the first smoke inlet.

[0058] In the above-mentioned fully open state, the negative pressure area formed outside the smoke inlet is the largest, and the oil fume extraction effect is the best, which can correspond to the strong gear of the range hood. Therefore, the fully open state is suitable for users to use in cooking activities with large oil fumes; in the above-mentioned first half-open state and the second half-open state, the negative pressure area formed outside the smoke inlet is smaller, and the oil fume extraction effect is slightly worse, which can correspond to the weak gear of the range hood. Therefore, the half-open state is suitable for users to use in cooking activities with smaller oil fumes.

[0059] In this embodiment, a fume concentration sensor 12 and / or a height sensor 13 are provided on the outer wall of the housing 1 below the second flap 3. The fume concentration sensor 12 is used to detect the fume concentration, and the height sensor 13 is used to detect the height of the pot. After the whole machine receives the power-on command, the fume concentration sensor 12 and the height sensor 13 are started, and the opening of the first flap 2 or the second flap 3 and the range hood gear are controlled by monitoring the fume concentration and / or the height of the pot to adapt to different working conditions, thereby improving the intelligence of the range hood and improving the user's satisfaction. Specifically, a decorative panel is also provided on the outer wall of the housing 1 below the second flap 3. The decorative panel is made of glass, and the fume concentration sensor 12 and the height sensor 13 are both arranged on the glass. The fume concentration sensor 12 and the height sensor 13 can be arranged up and down, that is, the fume concentration sensor 12 is located above the height sensor 13. Of course, the two can also be arranged at the same height, or the height sensor 13 is arranged above the fume concentration sensor 12, which can be designed according to actual conditions.

[0060] Here is a brief explanation of the correspondence between range hoods and different working conditions.

[0061] When the height of the cookware is high and the oil fume concentration is low, the first flap 2 is opened and the whole machine is in the weak gear; when the height of the cookware is high and the oil fume concentration is high, the first flap 2 is opened and the whole machine is in the strong gear; when the height of the cookware is low and the oil fume concentration is low, the second flap 3 is opened and the whole machine is in the weak gear; when the height of the cookware is low and the oil fume concentration is high, the second flap 3 is opened and the first flap 2 is opened, and the whole machine is in the strong gear.

[0062] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope, and the content of this specification should not be understood as limiting the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A range hood, characterized in that: include: A housing (1) having a first smoke inlet and a second smoke inlet provided thereon, wherein the first smoke inlet is located above the second smoke inlet; A flap assembly, comprising a first flap (2) and a second flap (3), wherein the first flap (2) and the second flap (3) are respectively rotatably connected to the housing (1), the first flap (2) being used to close or open the first smoke inlet, and the second flap (3) being used to close or open the second smoke inlet; as well as, A filter assembly is arranged inside the housing (1) and located at the first smoke inlet and the second smoke inlet. The filter assembly is spaced apart from the flap assembly and is configured to be able to drive the first flap (2) and / or the second flap (3) to flip.

2. The range hood according to claim 1, characterized in that: The filter assembly comprises a first filter (4), a second filter (5) and a third filter (6) which are connected to rotate in sequence from top to bottom, the first filter (4) being configured to be able to drive the first flap (2) to flip, and the second filter (5) and the third filter (6) being configured to be able to drive the second flap (3) to flip.

3. The range hood according to claim 2, characterized in that: The connection position of the first filter screen (4) and the second filter screen (5) is higher or lower than the lower edge of the first flap (2); and / or, The connection position between the second filter screen (5) and the third filter screen (6) is lower than the upper edge of the second flap (3) and higher than the lower edge of the second flap (3).

4. The range hood according to claim 2, characterized in that: When the first smoke inlet is opened, the first filter (4) is perpendicular to the smoke flow direction; and / or, When the second smoke inlet is opened, the third filter (6) is perpendicular to the smoke flow direction.

5. The range hood according to claim 2, characterized in that: The filter assembly further comprises a first drive unit (7) and a second drive unit (8); the output end of the first drive unit (7) is connected to the first filter (4); the output end of the second drive unit (8) is connected to the second filter (5), or the third filter (6), or a connection position between the second filter (5) and the third filter (6); and the connection point between the first filter (4) and the second filter (5) is fixed to the housing (1).

6. The range hood according to claim 5, characterized in that: The length of the third filter screen (6) is not less than twice the driving stroke of the second driving unit (8).

7. The range hood according to claim 5, characterized in that: The output end of the first driving unit (7) is connected to the upper part of the first filter screen (4).

8. The range hood according to claim 2, characterized in that: The filter assembly further comprises a limiting structure, which is connected to the third filter (6) and is used to constrain the movement trajectory of the third filter (6).

9. The range hood according to claim 8, characterized in that: The limiting structure comprises at least one limiting member (9), and at least one limiting member (9) is arranged on a side of the third filter screen (6) facing the second smoke inlet and can always maintain contact with the third filter screen (6).

10. The range hood according to claim 9, characterized in that: The limiting structure comprises two limiting members (9), the two limiting members (9) are arranged at an interval, and the third filter screen (6) is movably arranged between the two limiting members (9).

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