Range hood

Abstract

The present invention relates to a range hood, comprising: a smoke collecting hood having a smoke exhaust port; a volute, arranged at the smoke exhaust port, a cavity being arranged in the volute, a cavity wall of the cavity being provided with a window; a detection device, which can be movably extended into or extended out of the cavity through the window, and is used to detect the odor in the cavity; wherein the detection device comprises a driving mechanism, a linkage mechanism and a detection mechanism, the detection mechanism is connected to the linkage mechanism, and the linkage mechanism is connected to the driving mechanism; the driving mechanism drives the linkage mechanism to move, and the linkage mechanism drives the detection mechanism to move, so as to change the position of the detection mechanism, so that the detection mechanism can be movably extended into or extended out of the cavity through the window. The above-mentioned range hood can quickly and accurately detect the odor in the cavity, avoid the detection mechanism being placed in the cavity for a long time and being contaminated by oil, and is conducive to improving the service life of the detection mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of oil fume treatment, in particular to a range hood. Background Art

[0002] With the improvement of modern living standards, range hoods have gradually entered people's kitchens, providing people with oil fume suction and exhaust functions.

[0003] After the range hood has been absorbing and exhausting oil fumes for a long time, a large amount of oil will accumulate on the inner wall of the volute. If the user cannot understand the degree of oil pollution in the volute in time, the oil will often not be cleaned in time. If the oil is not cleaned in time, the accumulated oil will deteriorate and produce odor over time, which is very likely to pollute the air in the kitchen. Summary of the invention

[0004] Based on this, it is necessary to provide a range hood to address the problem that oil stains are not cleaned in time and easily deteriorate and produce odor.

[0005] A range hood, comprising:

[0006] A smoke collecting hood having a smoke exhaust port;

[0007] A volute is arranged at the smoke exhaust port, wherein a cavity is arranged in the volute, and a window is provided on the cavity wall of the cavity;

[0008] A detection device, which can be movably extended from the window into or out of the cavity and is used to detect the smell in the cavity;

[0009] Wherein, the detection device includes a driving mechanism, a linkage mechanism and a detection mechanism, the detection mechanism is connected to the linkage mechanism, and the linkage mechanism is connected to the driving mechanism; the driving mechanism drives the linkage mechanism to move, and the linkage mechanism drives the detection mechanism to move to change the position of the detection mechanism so that the detection mechanism can be movably extended into or out of the cavity through the window.

[0010] The above-mentioned range hood utilizes a driving mechanism and a linkage mechanism to change the position of the detection mechanism so that the detection mechanism extends from the window into the cavity, and quickly and accurately detects the odor in the cavity, so that the user can judge whether the oil needs to be cleaned according to the detection result, thereby preventing the oil in the cavity from deteriorating and producing odor; after the detection is completed, the position of the detection mechanism can be changed again through the driving mechanism and the linkage mechanism, so that the detection mechanism extends from the window outside the cavity, thereby preventing the detection mechanism from being placed in the cavity for a long time and being contaminated by oil, which is beneficial to increasing the service life of the detection mechanism.

[0011] In one embodiment, the linkage mechanism includes a transmission component and a moving component that are connected to each other, the detection mechanism is connected to the moving component, the driving mechanism drives the transmission component to move, the transmission component drives the moving component to lift or retract, and the moving component drives the detection mechanism to lift or retract synchronously.

[0012] In one embodiment, the transmission assembly includes meshing gears and a turbine rod, the moving assembly is connected to the turbine rod, the gear is connected to the driving mechanism, the driving mechanism drives the gear to rotate, the gear meshing drives the turbine rod to lift and lower, and the turbine rod drives the moving assembly to lift or telescope.

[0013] In one embodiment, the moving assembly includes a support and a telescopic frame, the two ends of the telescopic frame are respectively connected to the turbine rod and the support, the support is connected to the detection mechanism, and the lifting movement of the turbine rod can drive the telescopic movement of the telescopic frame.

[0014] In one embodiment, the moving assembly further comprises a slide rail arranged transversely, the telescopic frame comprises a first connecting rod, a second connecting rod and a plurality of third connecting rods, the first end of the first connecting rod and the first end of the second connecting rod are hinged to the turbine rod, the second end of the first connecting rod and the second end of the second connecting rod are respectively hinged to one of the third connecting rods, and the second end of the first connecting rod and the second end of the second connecting rod are slidably arranged on the slide rail, and the plurality of third connecting rods are hinged in a cross shape;

[0015] When the turbine rod rises, the turbine rod drives the first connecting rod and the second connecting rod to move closer to each other, and at the same time drives the plurality of the third connecting rods to move closer to each other, and the telescopic frame is in an extended state; when the turbine rod descends, the turbine rod drives the first connecting rod and the second connecting rod to move away from each other, and at the same time drives the plurality of the third connecting rods to move away from each other, and the telescopic frame is in a retracted state.

[0016] In one embodiment, the moving assembly includes a support and a fixed rod, the two ends of the fixed rod are respectively connected to the turbine rod and the support, the support is connected to the detection mechanism, and the lifting movement of the turbine rod can drive the fixed rod to lift and lower synchronously.

[0017] In one embodiment, the detection device further comprises a sealing plate, wherein the sealing plate is connected to an end surface of the support, and an area of ​​the sealing plate is greater than or equal to an area of ​​the window.

[0018] In one embodiment, the detection mechanism includes a plurality of sensors, each of which is arranged in an array along the periphery of the support.

[0019] In one of the embodiments, the detection device further includes a first fixing seat, the first fixing seat is fixedly connected to the volute and is located outside the cavity, and the driving mechanism is disposed on the first fixing seat.

[0020] In one embodiment, the detection device further includes a second fixing seat, which is fixedly connected to the volute and located outside the cavity, and the first fixing seat cover is disposed outside the linkage mechanism, the detection mechanism and the first fixing seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a retracted state of a telescopic frame in a range hood according to an embodiment;

[0022] Figure 2 for Figure 1 A partial schematic diagram of the range hood shown;

[0023] Figure 3 for Figure 1 A side view of the range hood shown;

[0024] Figure 4 A schematic diagram of an extended state of a telescopic frame in a range hood according to an embodiment;

[0025] Figure 5 for Figure 4 A schematic diagram of a range hood is shown;

[0026] Figure 6 for Figure 4 Side view of the range hood shown.

[0027] Reference numerals:

[0028] 100, volute; 101, cavity; 102, window; 110, shell; 120, blades; 130, motor; 200, detection device; 210, driving mechanism; 220, linkage mechanism; 221, transmission assembly; 222, moving assembly; 223, gear; 224, turbine rod; 225, support; 226, telescopic frame; 226a, first connecting rod; 226b, second connecting rod; 226c, third connecting rod; 227, slide rail; 230, detection mechanism; 231, sensor; 240, sealing plate; 250, first fixed seat; 260, second fixed seat. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] Please refer to Figure 1 In one embodiment, the range hood includes a smoke collecting hood (not shown), a volute 100 and a detection device 200. The smoke collecting hood has a smoke exhaust port, and the volute 100 is arranged at the smoke exhaust port. Figure 2 and Figure 3 A cavity 101 is provided in the volute 100 , and a window 102 is provided on the cavity wall of the cavity 101 . The detection device 200 can be movably extended into or out of the cavity 101 through the window 102 , and is used to detect the odor in the cavity 101 .

[0036] Among them, please refer to Figure 1 and Figure 4 The detection device 200 includes a driving mechanism 210, a linkage mechanism 220 and a detection mechanism 230. The detection mechanism 230 is connected to the linkage mechanism 220, and the linkage mechanism 220 is connected to the driving mechanism 210. The linkage mechanism 220 is driven by the driving mechanism 210 to move, and the linkage mechanism 220 drives the detection mechanism 230 to move to change the position of the detection mechanism 230, so that the detection mechanism 230 can be movably extended from the window 102 into or out of the cavity 101.

[0037] It should be noted that, since the range hood generates oil smoke when the cooker is in use, the smoke collecting hood is used to absorb and exhaust the generated oil smoke, and the volute 100 is used to receive the oil smoke discharged from the smoke collecting hood and discharge it to the outside. Due to long-term use, a large amount of oil stains will accumulate and adhere to the inner wall of the cavity 101 of the volute 100, and the accumulated oil stains will deteriorate and produce oily odors. If not cleaned in time, it is very easy to reversely pollute the air in the kitchen. Therefore, how to accurately and timely detect the oily odors in the cavity 101 of the volute 100 is extremely important.

[0038] With the above settings, Figure 4 As shown, the position of the detection mechanism 230 is changed by using the driving mechanism 210 and the linkage mechanism 220, so that the detection mechanism 230 extends from the window 102 into the cavity 101, and the odor in the cavity 101 is detected quickly and accurately, so that the user can judge whether the oil stain needs to be cleaned according to the detection result, so as to avoid the oil stain in the cavity 101 from deteriorating and generating odor; Figure 1As shown, after the detection is completed, the position of the detection mechanism 230 can be changed again through the driving mechanism 210 and the linkage mechanism 220, so that the detection mechanism 230 extends out of the cavity 101 from the window 102, thereby preventing the detection mechanism 230 from being placed in the cavity 101 for a long time and being contaminated by oil, which is beneficial to increasing the service life of the detection mechanism 230.

[0039] In a specific embodiment, the driving mechanism 210 may be a motor or a cylinder.

[0040] like Figure 2 In the illustrated embodiment, the linkage mechanism 220 includes a transmission assembly 221 and a moving assembly 222 that are connected to each other, and the detection mechanism 230 is connected to the moving assembly 222 .

[0041] In this embodiment, the driving mechanism 210 drives the transmission component 221 to move, the transmission component 221 drives the moving component 222 to move up and down or telescopically, and the moving component 222 drives the detection mechanism 230 to move up and down or telescopically synchronously, so that the detection mechanism 230 can be movably extended into or out of the cavity 101 through the window 102. Through this arrangement, the position adjustment of the detection mechanism 230 is flexible and convenient, and is convenient for users to use.

[0042] like Figure 2 In the illustrated embodiment, the transmission assembly 221 includes a meshing gear 223 and a turbine rod 224 , the moving assembly 222 is connected to the turbine rod 224 , and the gear 223 is connected to the driving mechanism 210 .

[0043] In this embodiment, the driving mechanism 210 drives the gear 223 to rotate, the gear 223 engages the transmission turbine rod 224 to move up and down, the turbine rod 224 drives the moving component 222 to move up and down or telescope, and the moving component 222 drives the detection mechanism 230 to move up and down or telescope synchronously.

[0044] exist Figure 2 In another embodiment not shown, the turbine rod 224 in the transmission assembly 221 can be replaced by a rack.

[0045] In this embodiment, the driving mechanism 210 drives the gear 223 to rotate, the gear 223 engages the transmission rack to move up and down, the rack drives the moving component 222 to move up and down or telescope, and the moving component 222 drives the detection mechanism 230 to move up and down or telescope synchronously.

[0046] exist Figure 2 In other embodiments not shown, the transmission component 221 may not be provided, and the linkage mechanism 220 only includes the moving component 222 to simplify the structure of the device and save energy.

[0047] In this embodiment, the driving mechanism 210 directly drives the moving component 222 to move up and down or to extend and retract, and the moving component 222 drives the detection mechanism 230 to move up and down or to extend and retract synchronously.

[0048] For example, when the driving mechanism 210 is a cylinder, the transmission component 221 is not provided and only the moving component 222 is provided. The cylinder can be extended and retracted to drive the moving component 222 to move up and down, and the moving component 222 drives the detection mechanism 230 to move up and down synchronously to change the position of the detection mechanism 230.

[0049] like Figure 2 and Figure 3 As shown, in one embodiment, the moving assembly 222 includes a support 225 and a telescopic frame 226. The two ends of the telescopic frame 226 are respectively connected to the turbine rod 224 and the support 225. The support 225 is connected to the detection mechanism 230. The lifting and lowering movement of the turbine rod 224 can drive the telescopic frame 226 to telescope.

[0050] Specifically, please refer to Figure 2 and Figure 5 The moving assembly 222 further includes a slide rail 227 disposed transversely, and the telescopic frame 226 is a telescopic structure. The telescopic frame 226 includes a first connecting rod 226a, a second connecting rod 226b and a plurality of third connecting rods 226c, the first end of the first connecting rod 226a and the first end of the second connecting rod 226b are hinged to the turbine rod 224, the second end of the first connecting rod 226a and the second end of the second connecting rod 226b are hinged to a third connecting rod 226c respectively, and the second end of the first connecting rod 226a and the second end of the second connecting rod 226b are slidably disposed on the slide rail 227, and the plurality of third connecting rods 226c are hinged in a cross shape.

[0051] like Figure 5 and Figure 6 As shown, when the turbine rod 224 rises, the turbine rod 224 drives the first connecting rod 226a and the second connecting rod 226b to move closer to each other, and at the same time drives the third connecting rods 226c to move closer to each other, and the telescopic frame 226 is in an extended state. At this time, the detection mechanism 230 can be extended into the cavity 101 through the window 102; Figure 2 and Figure 3 As shown, when the turbine rod 224 descends, the turbine rod 224 drives the first connecting rod 226a and the second connecting rod 226b to move away from each other, and at the same time drives the third connecting rods 226c to move away from each other, and the telescopic frame 226 is in a retracted state. At this time, the detection mechanism 230 can extend out of the cavity 101 through the window 102.

[0052] It should be noted here that the horizontal direction refers to the horizontal direction (i.e. Figure 3 X direction as shown).

[0053] Please refer to Figure 2In another embodiment, the moving assembly 222 includes a support 225 and a fixed rod (not shown), the two ends of the fixed rod are respectively connected to the turbine rod 224 and the support 225, the support 225 is connected to the detection mechanism 230, and the lifting movement of the turbine rod 224 can drive the fixed rod to lift and lower synchronously.

[0054] In this embodiment, the fixed rod is a non-retractable structure. The driving mechanism 210 drives the gear 223 to rotate, the gear 223 meshes with the transmission worm gear 224 to move up and down, and the worm gear 224 drives the fixed rod and the detection mechanism 230 to move up and down synchronously to change the position of the detection mechanism 230.

[0055] In other embodiments, the fixing rod may also be a telescopic structure to more flexibly adjust the position of the detection mechanism 230. For example, while the turbine rod 224 drives the fixing rod and the detection mechanism 230 to move synchronously up and down, the fixing rod may move telescopically to further quickly adjust the position of the detection mechanism 230.

[0056] It is understandable that if the detection mechanism 230 is placed in the cavity 101 for a long time and is contaminated by oil, the service life of the detection mechanism 230 will be shortened. Figure 1 As shown, the detection device 200 further includes a sealing plate 240 , which is connected to the end surface of the support 225 , and the area of ​​the sealing plate 240 is greater than or equal to the area of ​​the window 102 .

[0057] With this arrangement, when the moving assembly 222 drives the detection mechanism 230 to move synchronously up and down or telescope, the sealing plate 240 can open or close the window 102 .

[0058] For example, in an embodiment where the moving assembly 222 includes a support 225 and a telescopic frame 226, Figure 5 As shown, when the telescopic frame 226 is in the extended state, the window 102 is opened, and the detection mechanism 230 can extend into the cavity 101 through the window 102; Figure 2 As shown, when the telescopic frame 226 is in the retracted state, the sealing plate 240 closes the window 102 and the detection mechanism 230 is located outside the window 102 to prevent the detection mechanism 230 from being contaminated by oil due to being housed in the cavity 101 for a long time.

[0059] In this embodiment, the sealing plate 240 and the support 225 are split structures, and the two are connected by riveting or clamping. In other embodiments, the sealing plate 240 and the support 225 can also be an integrally formed structure with good integrity and high mechanical strength.

[0060] In this embodiment, the window 102 is rectangular, and the sealing plate 240 is also rectangular. In other embodiments, the window 102 and the sealing plate 240 may also be circular, triangular or other irregular shapes, as long as the area of ​​the sealing plate 240 can effectively cover the window 102.

[0061] In order to facilitate the installation of the drive mechanism 210, as Figure 1 As shown, the detection device 200 further includes a first fixing seat 250 . The first fixing seat 250 is fixedly connected to the volute 100 and is located outside the cavity 101 . The driving mechanism 210 is disposed on the first fixing seat 250 .

[0062] In this embodiment, the first fixing seat 250 is fixedly connected to the volute 100 by riveting. In other embodiments, the first fixing seat 250 can also be detachably connected to the volute 100 by means of snap connection, screw connection, etc.

[0063] In this embodiment, the fixed part of the driving mechanism 210 is connected to the first fixing seat 250, and the output part of the driving mechanism 210 is connected to the transmission assembly 221. This arrangement facilitates the installation of the driving mechanism 210 and does not interfere with the operation of the driving mechanism 210.

[0064] In order to better protect Figure 1 As shown, the detection device 200 further includes a second fixing seat 260 , which is fixedly connected to the volute 100 and located outside the cavity 101 , and the first fixing seat 250 is covered outside the linkage mechanism 220 , the detection mechanism 230 and the first fixing seat 250 .

[0065] Through this arrangement, the linkage mechanism 220, the detection mechanism 230 and the first fixed seat 250 are all protected in the enclosed space formed by the second fixed seat 260 and the volute 100, thereby preventing the linkage mechanism 220, the detection mechanism 230 and the driving mechanism 210 from being damaged by external impurities such as rainwater and dust, which is beneficial to increasing the service life of each mechanism.

[0066] In this embodiment, the second fixing seat 260 is fixedly connected to the volute 100 by riveting. In other embodiments, the second fixing seat 260 can also be detachably connected to the volute 100 by means of snap connection, screw connection, etc.

[0067] like Figure 1 and Figure 2 As shown, the detection mechanism 230 includes a plurality of sensors 231 , and each sensor 231 is arranged in an array along the periphery of the support 225 .

[0068] By arranging the sensors 231 in a specific geometric distribution, the detection mechanism 230 can detect the oil odor in the volute 100 from multiple angles and directions, and can collect parameters at different angles and directions, which is beneficial to improving the accuracy and reliability of the detection results.

[0069] In this embodiment, the support 225 is rectangular, and the sensors 231 are arranged in a rectangular array along the outer circumference of the support 225. In other embodiments, the sensors 231 may also be in a circular array or other array forms.

[0070] In the main body embodiment, each sensor 231 is a gas sensor 231. In other embodiments, each sensor 231 can also be a combination of a gas sensor 231 and a humidity sensor 231, which can detect the humidity in the volute 100 while detecting the smell, so as to assist the user in further determining the degree of oil pollution in the volute 100.

[0071] like Figure 1 In the illustrated embodiment, the volute 100 includes a housing 110, blades 120 and a motor 130. The housing 110 has a cavity 101 with an open end, the blades 120 and the motor 130 are disposed in the cavity 101, and the motor 130 is used to drive the blades to rotate.

[0072] It should be noted that the chamber 101 is connected to the smoke outlet, and an oil discharge hole (not shown) is provided on the bottom wall of the chamber 101. The oil smoke sucked and discharged by the smoke collecting hood is discharged from the smoke outlet, and the discharged oil smoke enters the housing 210 through the opening of the chamber 101, and the motor 130 drives the blade 120 to rotate, so that the oil smoke in the chamber 101 is discharged from the oil discharge hole.

[0073] like Figure 1 In the illustrated embodiment, the range hood further comprises a controller (not shown), and the controller is electrically connected to the fume hood and the driving mechanism 210 .

[0074] In this embodiment, the controller controls the operation of the driving mechanism 210 according to the opening and closing state of the smoke hood. When the smoke hood is in the open state, the driving mechanism 210 will not operate to prevent the detection mechanism 230 from interfering with the smoke hood's suction and exhaust of oil smoke; only when the smoke hood is in the closed state, the driving mechanism 210 will operate, and the driving mechanism 210 drives the linkage mechanism 220 and the detection mechanism 230 to operate, and the detection mechanism 230 extends into the cavity 101 of the volute 100 to detect odor.

[0075] For example, in an embodiment where the moving assembly 222 includes a support 225 and a telescopic frame 226, Figure 2As shown, when the smoke hood is in working state, the telescopic frame 226 is in a retracted state, and the detection mechanism 230 is protected in the closed space formed by the second fixing seat 260 and the volute 100 to prevent the detection mechanism 230 from being contaminated by oil; Figure 5 As shown, when the smoke collecting hood is in a closed state, the telescopic frame 226 is in an extended state, and the detection mechanism 230 extends into the cavity 101 through the window 102 to detect the odor in the cavity 101 .

[0076] In a specific embodiment, the odor detection result of the detection mechanism 230 is automatically output as a health report of the inner cavity of the volute 100, and can be displayed on a display or printed by the user. The user can determine whether the oil stains in the volute 100 are deteriorated based on the health report. If deteriorated, the user can activate the self-cleaning function of the range hood to clean the volute 100 or clean the volute 100 by itself.

[0077] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A range hood, characterized in that: include: A smoke collecting hood having a smoke exhaust port; A volute is arranged at the smoke exhaust port, wherein a cavity is arranged in the volute, and a window is provided on the cavity wall of the cavity; A detection device, which can be movably extended from the window into or out of the cavity and is used to detect the smell in the cavity; The detection device comprises a driving mechanism, a linkage mechanism and a detection mechanism, wherein the detection mechanism is connected to the linkage mechanism, and the linkage mechanism is connected to the driving mechanism; the driving mechanism drives the linkage mechanism to move, and the linkage mechanism drives the detection mechanism to move, so as to change the position of the detection mechanism, so that the detection mechanism can be movably extended from the window into or out of the cavity; The linkage mechanism includes a transmission component and a moving component connected to each other, the detection mechanism is connected to the moving component, the driving mechanism drives the transmission component to move, the transmission component drives the moving component to move up and down or telescopically, and the mobile component drives the detection mechanism to move up and down or telescopically synchronously; The detection device further comprises a sealing plate, and when the moving assembly drives the detection mechanism to move synchronously up and down or telescopically, the sealing plate can open or close the window.

2. The range hood according to claim 1, characterized in that: The transmission assembly includes meshing gears and a turbine rod, the moving assembly is connected to the turbine rod, the gear is connected to the driving mechanism, the driving mechanism drives the gear to rotate, the gear meshing drives the turbine rod to move up and down, and the turbine rod drives the moving assembly to move up and down or telescopically.

3. The range hood according to claim 2, characterized in that: The moving assembly includes a support and a telescopic frame, the two ends of the telescopic frame are respectively connected to the turbine rod and the support, the support is connected to the detection mechanism, and the lifting movement of the turbine rod can drive the telescopic movement of the telescopic frame.

4. The range hood according to claim 3, characterized in that: The moving assembly further includes a slide rail arranged transversely, the telescopic frame includes a first connecting rod, a second connecting rod and a plurality of third connecting rods, the first end of the first connecting rod and the first end of the second connecting rod are hinged to the turbine rod, the second end of the first connecting rod and the second end of the second connecting rod are respectively hinged to one of the third connecting rods, and the second end of the first connecting rod and the second end of the second connecting rod are slidably arranged on the slide rail, and the plurality of third connecting rods are hinged in a cross shape; When the turbine rod rises, the turbine rod drives the first connecting rod and the second connecting rod to move closer to each other, and at the same time drives the plurality of the third connecting rods to move closer to each other, and the telescopic frame is in an extended state; when the turbine rod descends, the turbine rod drives the first connecting rod and the second connecting rod to move away from each other, and at the same time drives the plurality of the third connecting rods to move away from each other, and the telescopic frame is in a retracted state.

5. The range hood according to claim 2, characterized in that: The moving assembly includes a support and a fixed rod, the two ends of the fixed rod are respectively connected to the turbine rod and the support, the support is connected to the detection mechanism, and the lifting movement of the turbine rod can drive the fixed rod to move synchronously.

6. The range hood according to any one of claims 3 or 5, characterized in that: The sealing plate is connected to the end surface of the support, and the area of ​​the sealing plate is greater than or equal to the area of ​​the window.

7. The range hood according to any one of claims 3 or 5, characterized in that: The detection mechanism includes a plurality of sensors, each of which is arranged in an array along the periphery of the support.

8. The range hood according to claim 1, characterized in that: The detection device further comprises a first fixing seat, the first fixing seat is fixedly connected to the volute and is located outside the cavity, and the driving mechanism is arranged on the first fixing seat.

9. The range hood according to claim 8, characterized in that: The detection device further comprises a second fixing seat, which is fixedly connected to the volute and located outside the cavity, and the first fixing seat cover is arranged outside the linkage mechanism, the detection mechanism and the first fixing seat.

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