Telescopic smoke guide device and range hood
The design of the telescopic smoke guide device solves the problems of ultra-thin range hoods and smoke escape, achieving better smoke extraction effect and user experience.
Patent Information
- Application Number
- CN202520009364.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-02
AI Technical Summary
Existing range hoods require a sufficient depth in their smoke collection chamber to accommodate the baffle, which prevents ultra-thin designs from being achieved. Furthermore, there is a problem of smoke escaping at the connection between the baffle and the body.
A telescopic smoke guiding device is adopted, including a smoke baffle, a flow guide plate and a telescopic plate. By flipping the smoke baffle and extending or retracting the telescopic plate, an extended or retracted flow guide hood is formed to avoid structural interference and optimize the flow path of oil fumes.
It achieves an ultra-thin design for the range hood while improving the smoke extraction effect, reducing smoke escape, and enhancing the user experience.
Smart Images
Figure CN223726439U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to range hood technical field, in particular to a telescopic smoke guide device and range hood. BACKGROUND
[0002] With the improvement of people's life quality, the range hood has become one of the indispensable kitchen household appliances in modern family, which is usually installed above the kitchen stove, can suck the oil fume generated in the cooking process, thereby realizing the purification of the kitchen environment and improving the comfort of people when cooking.
[0003] In order to expand the smoke range, the existing range hood usually adopts the turnover smoke baffle to realize the expansion of the smoke area, but the triangular smoke area formed by the smoke baffle is far away from the smoke source, the negative pressure is high, which leads to the unsatisfactory effect of sucking the oil fume; in addition, there will be a gap between the top edge of the smoke baffle and the connecting part of the range hood body, which leads to the escape of part of the oil fume from the gap when the oil fume enters the inside of the smoke collecting cavity along the inner wall of the smoke baffle, and the bottom of the fan box will accumulate oil stains all the year round, which not only reduces the effect of sucking the oil fume, but also affects the user's experience.
[0004] Therefore, the applicant puts forward a technical scheme of setting the flow guide cover on the inner wall of the smoke baffle, wherein the flow guide cover is an L-shaped flow guide cover composed of two plates which are integrally formed or mutually welded in L shape, and the ends of the two plates are fixedly connected with the smoke baffle respectively to form a three-dimensional space with the inner wall of the smoke baffle, which not only can make the negative pressure area below the smoke baffle move downward, thereby improving the effect of sucking the oil fume, but also can change the flow path of the oil fume and reduce the escape of the oil fume from the gap between the smoke baffle and the body.
[0005] However, when the range hood is not working, in order to reduce the space occupation and improve the overall aesthetics, the smoke baffle is used to close the smoke inlet, and the L-shaped flow guide cover is accommodated in the cavity passage of the smoke collecting cavity, and in order to ensure a certain effect of sucking the oil fume and preventing the escape of the oil fume, the L-shaped flow guide cover must have a large enough size, which leads to the fact that the cavity passage of the smoke collecting cavity must also have a certain accommodation space to accommodate the L-shaped flow guide cover, which causes that the depth of the cavity passage of the smoke collecting cavity cannot be small, that is, the width of the smoke collecting cavity under the side view is still wide, and the ultra-thin design of the range hood cannot be realized. UTILITY MODEL CONTENTS
[0006] In view of the problem that the existing range hood needs to ensure a sufficient depth to avoid structural interference when accommodating the inverted triangular flow guide cover, thereby limiting the ultra-thin design of the smoke collecting cavity, the present application provides a telescopic smoke guide device and range hood, which can meet the requirement of the ultra-thin design of the range hood while avoiding the structural interference between the flow guide cover and the smoke collecting cavity.
[0007] To achieve at least one of the above-mentioned advantages or other benefits and objectives of this utility model, this utility model provides a telescopic smoke guiding device, comprising:
[0008] The smoke baffle has an open state for opening the smoke inlet of the smoke collection chamber and a closed state for closing the smoke inlet;
[0009] A deflector includes a pivot end rotatably connected to the lower portion of the smoke baffle, a fixed end remote from the smoke baffle, and a deflector body integrally extending from the pivot end to the fixed end; and
[0010] The telescopic plate has an upper end fixedly connected to the upper part of the smoke baffle and a lower end fixedly connected to the fixed end of the guide plate, and the telescopic plate can be extended or retracted to increase or decrease the distance between the upper end and the lower end.
[0011] In some embodiments of this application, when the smoke baffle is in the open state, the telescopic plate is extended to form an extended guide hood with the guide plate on the inner side of the smoke baffle, for moving the negative pressure area formed below the smoke baffle downward; when the smoke baffle is in the closed state, the telescopic plate is retracted to form a retracted guide hood with the guide plate on the inner side of the smoke baffle, for being housed within the smoke collection chamber.
[0012] In some embodiments of this application, the telescopic plate includes a fixed plate body fixedly mounted on the upper part of the smoke baffle and providing the upper end portion, and a movable plate body fixedly mounted on the fixed end portion of the guide plate and providing the lower end portion; when the smoke baffle is in the open state, the upper edge of the movable plate body overlaps with the lower edge of the fixed plate body, so that the movable plate body and the fixed plate body are spliced together to extend the telescopic plate; when the smoke baffle is in the closed state, the upper edge of the movable plate body separates from the lower edge of the fixed plate body, so that the movable plate body and the fixed plate body are stacked together to retract the telescopic plate.
[0013] In some embodiments of this application, the lower edge of the fixed plate is bent toward the direction of approaching the smoke baffle, and the upper edge of the movable plate is bent toward the direction of away from the smoke baffle, so that when the smoke baffle is in the open state, the upper edges of the movable plate overlap each other with the lower edge of the fixed plate.
[0014] In some embodiments of the present application, the telescopic plate is a flexible plate body, an upper edge of the flexible plate body is fixedly connected to an upper portion of the smoke baffle as the upper end portion of the telescopic plate, and a lower edge of the flexible plate body is fixedly connected to the fixed end portion of the flow guide plate; when the smoke baffle is in the open state, the flexible plate body is flattened to extend the telescopic plate; when the smoke baffle is in the closed state, the flexible plate body is bent to retract the telescopic plate.
[0015] In some embodiments of the present application, the smoke baffle comprises a smoke baffle body for matching the smoke inlet, a fixed base plate fixedly connected to the smoke baffle body, and a pair of fixed wing plates downwardly protruding from the fixed base plate and arranged at intervals; the upper end portion of the telescopic plate is fixedly connected to the fixed base plate of the smoke baffle, and the pivot shaft end portion of the flow guide plate is pivotally connected to the fixed wing plate of the smoke baffle.
[0016] In some embodiments of the present application, the flow guide plate further comprises a pair of flow guide wing plates upwardly protruding from left and right sides of the flow guide plate body and respectively lap-jointed with the two fixed wing plates.
[0017] In some embodiments of the present application, lower edges of the two fixed wing plates are inwardly bent, and upper edges of the two flow guide wing plates are outwardly bent, so that when the smoke baffle is in the open state, the upper edges of the flow guide wing plates are lap-jointed with the lower edges of the fixed wing plates.
[0018] In some embodiments of the present application, the telescopic smoke guide device further comprises a driving mechanism arranged between the flow guide plate and the smoke baffle; the driving mechanism is an electric push-pull rod or a telescopic connecting rod.
[0019] According to another aspect of the present application, the present application further provides an extractor hood, comprising:
[0020] a fan box;
[0021] a smoke collecting cavity arranged below the fan box and provided with a smoke inlet; and
[0022] the telescopic smoke guide device as described above, the telescopic smoke guide device being reversibly arranged in the smoke collecting cavity for opening or closing the smoke inlet.
[0023] In summary, on the one hand, the telescopic smoke guide device can increase the distance between the fixed end and the smoke baffle by the extension of the telescopic plate and the rotation of the flow guide plate when the smoke baffle is in the open state, so that the flow guide plate, the telescopic plate and the smoke baffle together form an extended flow guide cover with a triangular space section, facilitating the downward movement of the negative pressure area formed below the smoke baffle to improve the oil fume extraction effect; on the other hand, the telescopic smoke guide device can also reduce the distance between the fixed end and the smoke baffle by the contraction of the telescopic plate and the rotation of the flow guide plate when the smoke baffle is in the closed state, so that the flow guide plate, the telescopic plate and the smoke baffle together form a contracted flow guide cover occupying a smaller space, so as to be accommodated in the ultra-thin smoke collecting cavity without structural interference. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 Fig. 1 shows a first example of an extractor hood according to an embodiment of the present application, wherein the smoke baffle is in an open state;
[0025] Figure 2 Fig. 2 shows a sectional view of the extractor hood shown in Fig. 1; Figure 1 Fig. 3 shows a sectional view of the extractor hood shown in Fig. 1;
[0026] Figure 3 Fig. 4 shows a state diagram of the smoke baffle in a closed state in the extractor hood according to the above first example of the present application;
[0027] Figure 4 Fig. 5 shows a sectional view of the extractor hood shown in Fig. 4; Figure 3 Fig. 6 shows a sectional view of the extractor hood shown in Fig. 4;
[0028] Figure 5 Fig. 7 shows a state diagram of the telescopic smoke guide device in an extended state in the extractor hood according to the above first example of the present application;
[0029] Figure 6 Fig. 8 shows a state diagram of the telescopic smoke guide device in a contracted state according to the above first example of the present application;
[0030] Figure 7 Fig. 9 shows an exploded view of the telescopic smoke guide device according to the above first example of the present application;
[0031] Figure 8 Fig. 10 shows a second example of an extractor hood according to the above embodiment of the present application, wherein the smoke baffle is in an open state;
[0032] Figure 9 Fig. 11 shows a state diagram of the smoke baffle in a closed state in the extractor hood according to the above second example of the present application;
[0033] Figure 10 A third example of a range hood according to the above embodiments of the present application is shown, wherein the baffle is in an open state;
[0034] Figure 11 A state diagram showing the baffle in a closed state in a range hood according to the above third example of the present application is shown.
[0035] Main element symbol explanation:
[0036] 1, telescopic smoke guide device; 10, baffle; 11, baffle body; 12, fixed base plate; 13, fixed wing plate; 20, guide plate; 21, shaft end; 22, fixed end; 23, guide plate body; 24, guide wing plate; 30, telescopic plate; 301, upper end; 302, lower end; 31, fixed plate body; 310, lower flange; 32, movable plate body; 320, upper flange; 33, flexible plate body; 40, driving mechanism; 41, electric push-pull rod; 42, telescopic connecting rod; 2, smoke collecting cavity; 3, smoke inlet; 4, fan box.
[0037] The above main element symbol explanation, in combination with the drawings and specific embodiments, further details the present application. Specific embodiments
[0038] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below in combination with the drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0040] In addition, the terms "first", "second", "third", etc. are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance or an ordered sequence. Thus, features referring to "first", "second" etc. can include, explicitly or implicitly, one or more of each such feature. In the description of the application, the meaning of "plurality" is at least two, for example two, three, etc., unless explicitly specified otherwise.
[0041] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0042] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0043] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only embodiment.
[0044] Considering that the smoke collecting cavity of the existing range hood needs to ensure sufficient depth to accommodate the inverted triangular flow guide cover, otherwise the inverted triangular flow guide cover will interfere with the back plate of the smoke collecting cavity, causing the ultra-thin design of the range hood to be limited, it is difficult to achieve the ultra-thin design of the range hood. Therefore, the present application creatively provides a telescopic smoke guide device and a range hood, which can meet the ultra-thin design requirement of the range hood while avoiding structural interference between the flow guide cover and the smoke collecting cavity.
[0045] Specifically, according to another aspect of the present application, asFigures 1 to 11 As shown, one embodiment of this application provides a range hood, which may include a fan box 4, a smoke collection chamber 2 disposed below the fan box 4 and having a smoke inlet 3, and a telescopic smoke guide device 1 rotatably disposed in the smoke collection chamber 2 for opening or closing the smoke inlet 3, for smoke extraction when the smoke inlet 3 is open. It is understood that the range hood of this application may also include, but is not limited to, a water tank, a water collection box, and / or sensors to assist in completing the smoke extraction function; these will not be elaborated upon here.
[0046] More specifically, such as Figures 1 to 11 As shown, the telescopic smoke guide device 1 may include a smoke baffle 10, a flow guide 20, and a telescopic plate 30. The smoke baffle 10 has an open state for opening the smoke inlet 3 and a closed state for closing the smoke inlet 3. The flow guide 20 includes a pivot end 21 rotatably connected to the lower part of the smoke baffle 10, a fixed end 22 away from the smoke baffle 10, and a flow guide body 23 integrally extending from the pivot end 21 to the fixed end 22. The telescopic plate 30 has an upper end 301 fixedly connected to the upper part of the smoke baffle 10 and a lower end 302 fixedly connected to the fixed end 22 of the flow guide 20, and the telescopic plate 30 can be extended or retracted to increase or decrease the distance between the upper end 301 and the lower end 302. It is understood that the upper part of the smoke baffle 10 refers to the part of the smoke baffle 10 that is close to the fan box 4, and the lower part of the smoke baffle 10 refers to the part of the smoke baffle 10 that is far away from the fan box 4; the inner side of the smoke baffle 10 refers to the side of the smoke baffle 10 facing the smoke collection chamber 2.
[0047] Thus, when the smoke baffle 10 is in the open state, the telescopic plate 30 is extended to form an extended guide hood with the guide plate 20 on the inner side of the smoke baffle 10, for moving the negative pressure area formed below the smoke baffle 10 downward; when the smoke baffle 10 is in the closed state, the telescopic plate 30 is retracted to form a retracted guide hood with the guide plate 20 on the inner side of the smoke baffle 10, for being housed within the smoke collection chamber 2.
[0048] Optionally, such as Figure 2 and Figure 4 As shown, the guide plate 23 extends straight from the shaft end 21 to the fixed end 22, so that the extended guide shroud has a triangular spatial cross section, which facilitates the downward movement of the negative pressure area.
[0049] Optionally, such as Figure 2 and Figure 4As shown, the rotation axis of the deflector 20 at the rotation shaft end 21 is parallel to the smoke baffle 10, so as to ensure that the deflector body 23 of the deflector 20 can move away from or close to the smoke baffle 10 when the deflector body 23 rotates around the rotation shaft end 21.
[0050] It is worth noting that, since the deflector 20 in the telescopic smoke guiding device 1 of the present application is rotatable relative to the smoke baffle 10, and the telescopic plate 30 itself can be extended or retracted, even if the upper end 301 and the lower end 302 of the telescopic plate 30 are fixedly connected to the upper portion of the smoke baffle 10 and the fixed end 22 of the deflector 20 respectively, as Figure 1 and Figure 2 shown, the telescopic smoke guiding device 1 of the present application can still increase the distance between the fixed end 22 and the smoke baffle 10 by the extension of the telescopic plate 30 and the rotation of the deflector 20 when the smoke baffle 10 is in the open state, so that the deflector 20, the telescopic plate 30 and the smoke baffle 10 together form an extended deflector cover with a triangular space section, facilitating the downward movement of the negative pressure area formed below the smoke baffle 10 to improve the oil fume extraction effect; in addition, as Figure 3 and Figure 4 shown, the telescopic smoke guiding device 1 of the present application can also decrease the distance between the fixed end 22 and the smoke baffle 10 by the retraction of the telescopic plate 30 and the rotation of the deflector 20 when the smoke baffle 10 is in the closed state, so that the deflector 20, the telescopic plate 30 and the smoke baffle 10 together form a retracted deflector cover occupying a smaller space, so as to be accommodated in the ultra-thin smoke collecting cavity 2 without structural interference.
[0051] Optionally, when the smoke baffle 10 is in the open state, the included angle β between the deflector body 23 of the deflector 20 and the back plate of the smoke collecting cavity 2 is less than or equal to 90°; that is, the deflector body 23 extends horizontally or obliquely upward in the direction away from the smoke baffle 10 (i.e. in the direction close to the back plate of the smoke collecting cavity 2), so as to better guide the oil fume into the smoke collecting cavity 2 while moving the negative pressure area downward, improving the oil fume extraction effect. It can be understood that, if the included angle between the deflector body 23 and the back plate of the smoke collecting cavity 2 is greater than 90°, i.e. the deflector body 23 extends obliquely downward in the direction away from the smoke baffle 10, the oil fume will flow downward along the deflector body 23 to enter the smoke collecting cavity 2 after turning, and then flow upward in the opposite direction under the action of the fan suction, so that the oil fume flow rate at the smoke inlet is reduced, resulting in poor oil fume extraction effect.
[0052] According to the above embodiments of the present application, as Figures 5 to 7As shown, the smoke baffle 10 can include a smoke baffle body 11 matched with the smoke inlet 3, a fixed base plate 12 fixedly connected to the smoke baffle body 11, and a pair of fixed wing plates 13 downwardly protruding from the fixed base plate 12 and arranged at intervals; the upper end 301 of the telescopic plate 30 is fixedly connected to the fixed base plate 12 of the smoke baffle 10; the pivot end 21 of the flow guide plate 20 is pivoted to the fixed wing plate 13 of the smoke baffle 10, so as to reserve a rotating space for the flow guide plate 20. It can be understood that the smoke baffle body 11 mentioned in the present application can generally be implemented as a glass plate, and the fixed base plate 12 and the two fixed wing plates 13 can be but not limited to be implemented by punching and processing a steel plate; the fixed base plate 12 can be but not limited to be adhesively fixed to the smoke baffle body 11 so as to be attached to the inner side of the smoke baffle body 11.
[0053] Optionally, as shown in Figures 5 to 7 The flow guide plate 20 further includes a pair of flow guide wing plates 24 upwardly protruding from the left and right sides of the flow guide plate body 23 and respectively lapping the two fixed wing plates 13, so as to block the oil fume from flowing into the space between the flow guide plate body 23 and the smoke baffle 10 from the left and right sides of the flow guide plate body 23, and help to ensure that the space between the flow guide plate body 23 and the smoke baffle 10 remains clean.
[0054] Optionally, as shown in Figure 5 and Figure 7 The lower edges of the two fixed wing plates 13 of the smoke baffle 10 are inwardly bent (i.e. oppositely bent), and the upper edges of the two flow guide wing plates 24 of the flow guide plate 20 are outwardly bent (i.e. oppositely bent), so that when the smoke baffle 10 is in the open state, the upper edges of the flow guide wing plates 24 are lapped on the lower edges of the fixed wing plates 13 to form a better lapping sealing effect, so as to avoid the oil fume leaking into the interior space of the telescopic flow guide cover through the lapping part between the fixed wing plates 13 and the flow guide wing plates 24.
[0055] It is worth noting that the telescopic plate 30 mentioned in the present application can be composed of two relatively movable rigid plates, or can be implemented as a flexible plate, as long as the required expansion and contraction can be achieved.
[0056] Exemplarily, in the first example of the present application, as shown in Figures 1 to 7As shown, the telescopic plate 30 comprises a fixed plate body 31 fixed to the upper portion of the smoke baffle 10 and providing the upper end portion 301, and a movable plate body 32 fixed to the fixed end portion 22 of the flow guide plate 20 and providing the lower end portion 302, and the upper edge of the movable plate body 32 is used to lap the lower edge of the fixed plate body 31. In this way, when the smoke baffle 10 is in the open state, the upper edge of the movable plate body 32 and the lower edge of the fixed plate body 31 lap each other, so that the movable plate body 32 and the fixed plate body 31 are spliced with each other to expand the telescopic plate 30, thereby forming the expanded flow cover inside the smoke baffle 10; when the smoke baffle 10 is in the closed state, the upper edge of the movable plate body 32 and the lower edge of the fixed plate body 31 are separated from each other, so that the movable plate body 32 and the fixed plate body 31 are stacked with each other to shrink the telescopic plate 30, thereby forming the shrunk flow cover inside the smoke baffle 10.
[0057] Optionally, as shown in Figure 2 , the lower edge of the fixed plate body 31 is bent towards the direction close to the smoke baffle 10 to form a lower turning edge 310, and the upper edge of the movable plate body 32 is bent towards the direction away from the smoke baffle 10 to form an upper turning edge 320, so that the lower surface of the upper turning edge 320 is lapped on the upper surface of the lower turning edge 310 in a mutually abutting manner when the smoke baffle 10 is in the open state, so as to form a better lap sealing effect, avoiding the leakage of oil fume to the internal space of the expanded flow cover through the lap joint between the fixed plate body 31 and the movable plate body 32.
[0058] Optionally, as shown in Figure 2 , Figure 4 and Figure 7 , the movable plate body 32 is integrally connected to the fixed end portion 22 of the flow guide plate 20; that is, the flow guide plate 20 and the movable plate body 32 can be stamped or integrally injection molded from a plate.
[0059] In summary, as shown in Figure 2 and Figure 5 , when the smoke baffle 10 is flipped to switch from the closed state to the open state, the flow guide plate 20 is turned downward to drive the movable plate body 32 of the telescopic plate 30 to move downward until the upper edge of the movable plate body 32 is lapped on the lower edge of the fixed plate body 31, so as to form the expanded flow cover inside the smoke baffle 10; as shown in Figure 4 and Figure 6 , when the smoke baffle 10 is flipped to switch from the open state to the closed state, the flow guide plate 20 is turned upward to drive the movable plate body 32 of the telescopic plate 30 to move upward, so that the upper edge of the movable plate body 32 and the lower edge of the fixed plate body 31 are separated from each other, so as to form the shrunk flow cover inside the smoke baffle 10.
[0060] Exemplarily, in the second example of the present application, as shown in Figure 8 and Figure 9 the telescopic plate 30 can be implemented as a flexible plate body 33, the upper edge of which is fixedly connected to the upper portion of the smoke baffle 10 as the upper end 301 of the telescopic plate 30, and the lower edge of which is fixedly connected to the fixed end 22 of the flow guide plate 20 as the lower end 302 of the telescopic plate 30. In this way, when the smoke baffle 10 is in the open state, the flexible plate body 33 is flattened to stretch the telescopic plate 30, thereby forming the stretched flow cover on the inner side of the smoke baffle 10; when the smoke baffle 10 is in the closed state, the flexible plate body 33 is bent to shrink the telescopic plate 30, thereby forming the shrunk flow cover on the inner side of the smoke baffle 10.
[0061] In other words, as shown in Figure 8 when the smoke baffle 10 is flipped to switch from the closed state to the open state, the flow guide plate 20 is rotated downward to drive the lower edge of the flexible plate body 33 (i.e. the lower end 302 of the telescopic plate 30) to move downward until the flexible plate body 33 is flattened to form the stretched flow cover on the inner side of the smoke baffle 10; as shown in Figure 9 when the smoke baffle 10 is flipped to switch from the open state to the closed state, the flow guide plate 20 is rotated upward to drive the lower edge of the flexible plate body 33 to move upward so that the flexible plate body 33 is bent to form the shrunk flow cover on the inner side of the smoke baffle 10.
[0062] It is worth noting that the flexible plate body 33 can be, but is not limited to, implemented as a rubber-made piece, so as to achieve the required flattening and bending effects by virtue of the elastic deformation of its own material.
[0063] In addition, in the above two examples, when the smoke baffle 10 is flipped to switch from the closed state to the open state, the flow guide plate 20 can be rotated downward under the action of its own gravity to stretch the telescopic plate 30 to form the stretched flow cover on the inner side of the smoke baffle 10; when the smoke baffle 10 is flipped to switch from the open state to the closed state, the flow guide plate 20 can be rotated upward under the push of the back plate of the smoke collecting cavity 2 to shrink the telescopic plate 30 to form the shrunk flow cover on the inner side of the smoke baffle 10.
[0064] And in order to adjust the downward moving degree of the negative pressure area when the smoke baffle 10 is in the open state, as shown in Figures 1 to 11 the telescopic smoke guide device 1 of the present application can further include a driving mechanism 40 arranged between the flow guide plate 20 and the smoke baffle 10, for driving the flow guide plate 20 to rotate relative to the smoke baffle 10 to adjust the included angle between the flow guide plate 20 and the smoke baffle 10, thereby adjusting the downward moving degree of the negative pressure area.
[0065] Exemplarily, as shown in Figures 1 to 9 , the driving mechanism 40 can be implemented as an electric push-pull rod 41 fixed to the fixed base plate 12, which is drivingly connected to the deflector plate body 23 of the deflector plate 20 to drive the fixed end portion 22 of the deflector plate 20 to approach or move away from the smoke baffle 10.
[0066] Thus, in the above first example of the present application, when the electric push-pull rod 41 pulls the deflector plate body 23 to drive the fixed end portion 22 to approach the smoke baffle 10, the movable plate body 32 of the telescopic plate 30 is driven by the fixed end portion 22 to approach the smoke baffle 10, so as to realize the stacking of the movable plate body 32 and the fixed plate body 31, so that the degree of the negative pressure area is reduced; while as Figure 1 and Figure 2 shown, when the electric push-pull rod 41 pushes the deflector plate body 23 to drive the fixed end portion 22 to move away from the smoke baffle 10, the movable plate body 32 of the telescopic plate 30 is driven by the fixed end portion 22 to move away from the smoke baffle 10, so as to realize the lapping of the movable plate body 32 and the fixed plate body 31, so that the degree of the negative pressure area is increased.
[0067] In the above second example of the present application, when the electric push-pull rod 41 pulls the deflector plate body 23 to drive the fixed end portion 22 to approach the smoke baffle 10, the lower edge of the flexible plate body 33 is driven by the fixed end portion 22 to approach the smoke baffle 10, so as to realize the bending of the flexible plate body 33, so that the degree of the negative pressure area is reduced; while as Figure 8 shown, when the electric push-pull rod 41 pushes the deflector plate body 23 to drive the fixed end portion 22 to move away from the smoke baffle 10, the lower edge of the flexible plate body 33 is driven by the fixed end portion 22 to move away from the smoke baffle 10, so as to realize the flattening of the flexible plate body 33, so that the degree of the negative pressure area is increased.
[0068] Optionally, as Figure 2 , Figure 4 , Figure 8 and Figure 9 shown, the pushing and pulling end of the electric push-pull rod 41 can be slidably pivoted to the deflector plate body 23 adjacent to the fixed end portion 22, so as to avoid the problem of jamming when the deflector plate 20 is pushed and pulled. It can be understood that the driving mechanism 40 of the present application can also be implemented as other active driving members such as pneumatic cylinder, hydraulic rod, linear motor or electromagnetic mechanism, and the present application will not be described in detail.
[0069] In addition, in other examples of the present application, the driving mechanism 40 can also be implemented as a non-powered driving mechanism such as telescopic link or folding link. For example, in the third example of the present application, as Figure 10and Figure 11 As shown in the figure, the driving mechanism 40 can be implemented as a telescopic connecting rod 42, one end of which is connected to the smoke baffle 10, and the other end of which is connected to the flow guide plate 20, so as to slow down the rotation speed of the flow guide plate 20, and avoid the flow guide plate 20 from falling too fast under the action of gravity and affecting the service life. It can be understood that the telescopic connecting rod 42 mentioned in the present application can be composed of two pull rods, one of which is slidably sleeved outside the other.
[0070] It is worth noting that since the telescopic plate 30 in the telescopic smoke guide device 1 can be switched between the expanded state and the contracted state, the telescopic smoke guide device 1 can not only form an expanded flow cover to move the negative pressure area downward, but also form a contracted flow cover to be accommodated in the smoke collecting cavity 2, so that the smoke collecting cavity 2 in the range hood of the present application can be implemented as a wedge-shaped cover body with the upper part being wide and the lower part being narrow, or a rectangular cover body with the upper part and the lower part being equal in width, so as to meet the ultra-thin design of the smoke collecting cavity 2.
[0071] The technical features of the above embodiments can be combined in any way. In order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.
[0072] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.
Claims
1. A telescopic smoke guide, characterized in that The utility model relates to a smoke baffle, a guide plate and a telescopic plate, and belongs to the technical field of smoke exhaust. The utility model discloses a smoke baffle, a guide plate and a telescopic plate, and belongs to the technical field of smoke exhaust. The utility model discloses a smoke baffle, a guide plate and a telescopic plate, and belongs to the technical field of smoke exhaust. The utility model discloses a smoke baffle, a guide plate and a telescopic plate, and belongs to the technical field of smoke exhaust.
2. A telescopic smoke guide according to claim 1, characterized in that The utility model discloses a smoke baffle, a guide plate and a telescopic plate, and belongs to the technical field of smoke exhaust.
3. A telescopic smoke guide according to claim 2, characterised in that The utility model discloses a smoke baffle, a guide plate and a telescopic plate, and belongs to the technical field of smoke exhaust.
4. A telescopic smoke guide according to claim 3, characterised in that The utility model discloses a smoke baffle, a guide plate and a telescopic plate, and belongs to the technical field of smoke exhaust.
5. The telescoping smoke guide of claim 2, wherein, The utility model discloses a smoke baffle, a guide plate and a telescopic plate, and belongs to the technical field of smoke exhaust.
6. A telescopic smoke guide according to any one of claims 1 to 5, characterized in that The utility model discloses a smoke baffle, a guide plate and a telescopic plate, and belongs to the technical field of smoke exhaust.
7. A telescopic smoke guide according to claim 6, characterised in that 8. A telescopic smoke guide according to claim 7, characterised in that The lower edges of the two fixed wing plates are bent inwardly, and the upper edges of the two guide wing plates are bent outwardly, so that the upper edges of the guide wing plates are overlapped with the lower edges of the fixed wing plates when the smoke baffle is in the open state.
9. A telescopic smoke guide according to any one of claims 1 to 5, characterized in that The telescopic smoke guide device further comprises a driving mechanism arranged between the guide plate and the smoke baffle; the driving mechanism is an electric push-pull rod or a telescopic connecting rod.
10. A range hood characterized by, Comprise: a fan box; a smoke collecting cavity arranged below the fan box and provided with a smoke inlet; and The telescopic smoke guide device according to any one of claims 1 to 9 is reversibly arranged in the smoke collecting cavity and used for opening or closing the smoke inlet.