Range hood

Abstract

The present invention provides a range hood, which relates to the technical field of kitchen appliances. The range hood includes a smoke collecting hood and a smoke guide plate. The smoke collecting panel of the smoke collecting hood is provided with a smoke inlet. The smoke guide plate is located outside the smoke inlet and corresponds to the smoke inlet. The left area of ​​the inner wall of the smoke guide plate is rotatably connected to a left supporting arm, and the right area is rotatably connected to a right supporting arm. The smoke collecting hood is equipped with a driving device. The driving end of the driving device is connected to the left supporting arm and the right supporting arm, and is used to drive the left supporting arm and the right supporting arm to perform telescopic movement. The smoke guide plate rotates relative to the smoke collecting panel under the telescopic action of the left supporting arm and the right supporting arm, and forms a left smoke collecting chamber and / or a right smoke collecting chamber with the smoke collecting panel. The range hood can adjust the form of the smoke collecting chamber formed by the smoke guide plate according to the user's use of the burner, so that the suction intensity when cooking with a single burner is greatly enhanced, and the suction effect of the range hood on cooking with a single burner is correspondingly improved.

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 appliances widely used in kitchens. Range hoods mainly include top-suction range hoods and side-suction range hoods according to the position of the smoke inlet. Among them, the smoke inlet of the side-suction range hood is arranged on the side of the smoke collecting hood. In order to improve the smoke collection effect of the smoke collecting hood on the oil fume gas, a smoke guide plate is generally provided on one side of the smoke inlet. The smoke collection cavity formed by the smoke guide plate and the smoke collecting panel of the smoke collecting hood can collect the oil fume generated by cooking on the stove, and the smoke collection range determines the suction effect of the range hood. Existing stoves are generally provided with two left and right burners. In actual use, users often only use one of the burners for cooking, and the smoke collection range of the smoke collection cavity involves both burners, resulting in dispersed suction force of the range hood and poor suction effect for cooking with a single burner. Summary of the invention

[0003] The object of the present invention is to provide a range hood to alleviate the technical problem in the prior art that the range hood has a poor suction effect on cooking with a single burner.

[0004] An embodiment provides a range hood, comprising a smoke collecting hood and a smoke guide plate, the smoke collecting panel of the smoke collecting hood being provided with a smoke inlet, the smoke guide plate being located outside the smoke inlet and corresponding to the smoke inlet; a left area of ​​an inner wall of the smoke guide plate is rotatably connected to a left supporting arm, and a right area is rotatably connected to a right supporting arm, the smoke collecting hood is provided with a driving device, a driving end of the driving device is connected to the left supporting arm and the right supporting arm, and is used for driving the left supporting arm and the right supporting arm to perform telescopic movement, the smoke guide plate rotates relative to the smoke collecting panel under the telescopic action of the left supporting arm and the right supporting arm, and forms a left smoke collecting chamber and / or a right smoke collecting chamber with the smoke collecting panel.

[0005] In an optional embodiment, the left supporting arm and the right supporting arm both extend toward the outside of the smoke collecting panel, a left guide rail is fixedly provided on the left area of ​​the smoke collecting hood, and the left supporting arm is slidably connected to the left guide rail along the length direction of the left guide rail; a right guide rail is fixedly provided on the right area of ​​the smoke collecting hood, and the right supporting arm is slidably connected to the right guide rail along the length direction of the right guide rail.

[0006] In an optional embodiment, the driving device includes a telescopic driving assembly, a connecting arm and a limiting arm, one end of the connecting arm is hinged to the left supporting arm, and the other end is hinged to the right supporting arm, and the left supporting arm, the smoke guide plate, the right supporting arm and the connecting arm together constitute a parallelogram linkage mechanism; one end of the limiting arm is fixedly connected to the smoke collecting hood, and the other end is pivotally connected to the connecting arm;

[0007] The driving end of the telescopic driving assembly is connected to the left supporting arm, and is used to drive the left supporting arm to slide back and forth along the left guide rail; or, the driving end of the telescopic driving assembly is connected to the right supporting arm, and is used to drive the right supporting arm to slide back and forth along the right guide rail.

[0008] In an optional embodiment, the pivotal connection between the limiting arm and the connecting arm is located in the middle of the length direction of the connecting arm.

[0009] In an optional embodiment, a plug connector is provided at one end of the limiting arm facing the connecting arm, the connecting arm is provided with a plug slot, and the plug connector is plugged into the plug slot.

[0010] In an optional embodiment, the angle between the smoke guide plate and the smoke collecting panel ranges from 0° to 8°.

[0011] In an optional embodiment, the left support arm is provided with a left plug-in tube with an upward opening at one end facing the smoke guide plate, and a left plug-in shaft is provided on the inner wall of the smoke guide plate, and the left plug-in shaft is plugged into the left plug-in tube from top to bottom; the right support arm is provided with a right plug-in tube with an upward opening at one end facing the smoke guide plate, and a right plug-in shaft is provided on the inner wall of the smoke guide plate, and the right plug-in shaft is plugged into the right plug-in tube from top to bottom;

[0012] Alternatively, a left plug-in shaft is provided at one end of the left supporting arm facing the smoke guide plate, a left plug-in tube with an opening facing downward is provided on the inner wall of the smoke guide plate, and the left plug-in shaft is plugged into the left plug-in tube from bottom to top; a right plug-in shaft is provided at one end of the right supporting arm facing the smoke guide plate, a right plug-in tube with an opening facing downward is provided on the inner wall of the smoke guide plate, and the right plug-in shaft is plugged into the right plug-in tube from bottom to top.

[0013] In an optional embodiment, a connecting plate is glued to the inner wall of the smoke guide plate, and the left supporting arm and the right supporting arm are both hinged to the connecting plate.

[0014] In an optional embodiment, the smoke guide plate is an integrally formed plate.

[0015] In an optional embodiment, an oil collecting box is detachably fixed to the bottom of the smoke collecting hood.

[0016] In an optional embodiment, the smoke collecting hood is provided with a guide component, and the guide component is located between the oil collecting box and the smoke guide plate, and is used for guiding the oil stains dripping from the smoke guide plate into the oil collecting box.

[0017] The beneficial effects of the range hood of the present invention include:

[0018] The range hood provided by the present invention comprises a smoke collecting hood with a smoke collecting chamber formed inside which can be used to install components and contain oil fume gas, a smoke guide plate used to block the smoke inlet of the smoke collecting hood or form a smoke collecting chamber together with the smoke collecting panel, a driving device used to drive the smoke guide plate to move, and a left supporting arm and a right supporting arm connected between the driving device and the smoke guide plate as a linkage.

[0019] The left supporting arm and the right supporting arm are rotatably connected to the left and right parts of the smoke guide plate, respectively, and the left supporting arm and the right supporting arm can extend outward from the smoke collecting panel or retract into the smoke collecting chamber under the driving action of the driving device, wherein the length of the left supporting arm and the right supporting arm extending outward from the smoke collecting panel directly determines the distance between the left and right rotating connections of the smoke guide plate relative to the smoke collecting panel, and can correspondingly determine the angle formed between the smoke guide plate and the smoke collecting panel in the left and right directions, that is, the size of the smoke collecting chamber. Specifically, when the range hood is not needed, the smoke guide plate can be located at any position, preferably, the driving device can drive both the left supporting arm and the right supporting arm to retract into the smoke collecting chamber, and the smoke guide plate moves toward the smoke collecting panel accordingly, until the smoke guide plate blocks the smoke inlet of the smoke collecting panel, at which time, the smoke guide plate separates the smoke collecting chamber and the outside of the range hood into two relatively independent spaces, thereby reducing the secondary pollution of the kitchen caused by the oil smoke in the public flue being re-injected into the kitchen through the smoke collecting chamber. When the user uses two burners to cook and produces oil smoke at the same time, the driving device can be controlled to drive the left supporting arm and the right supporting arm to extend outward, and the smoke guide plate moves outward accordingly. There are gaps between the left and right sides of the smoke guide plate and the smoke collecting panel. Accordingly, the plate body in the left area of ​​the smoke guide plate and the smoke collecting panel form a left smoke chamber, and the position of the left smoke chamber corresponds to the position of the left burner up and down. The oil smoke gas generated by the left burner can flow into the left smoke chamber through the opening on the left side of the left smoke chamber, and then flow into the smoke collecting chamber through the smoke inlet, and then be transported to the common flue; at the same time, the plate body in the right area of ​​the smoke guide plate and the smoke collecting panel form a right smoke chamber, and the position of the right smoke chamber corresponds to the position of the right burner up and down. The oil smoke gas generated by the right burner can flow into the right smoke chamber through the opening on the right side of the right smoke chamber, and then flow into the smoke collecting chamber through the smoke inlet, and then be transported to the common flue.

[0020] When the user only uses the left burner to cook and generate oil smoke, the driving device can be controlled to drive the left supporting arm to extend outward, and the left side of the smoke guide plate is forced to rotate outward to form a left smoke collecting chamber between the smoke collecting panel (in this process, the driving device can be controlled to drive the right supporting arm to extend outward a certain distance according to actual conditions to reduce the interference between the right plate and the smoke collecting panel during the rotation of the smoke guide plate). At this time, the right side position of the smoke guide plate is approximately unchanged, and the distance from the smoke collecting panel is small or even abuts. When the suction power in the smoke collecting chamber is constant, compared with the openings on both sides of the smoke inlet, the smoke guide plate at this time can block the right side area of ​​the air inlet, and the effective air inlet area of ​​the smoke inlet is reduced. The corresponding smoke collecting chamber enhances the suction effect of the oil smoke gas at the left burner through the left smoke collecting chamber; in addition, an effective clamping chamber with an opening facing left is formed between the smoke guide plate and the smoke collecting panel, which can block the right side to reduce the amount of oil smoke gas entering the left smoke collecting chamber to escape outward, thereby further improving the suction effect of the range hood on the oil smoke gas at the left burner. Similarly, when the user only uses the right burner to cook and produces oil smoke, the drive device can be controlled to drive the right support arm to extend outward, and the right side of the smoke guide plate is forced to rotate outward to form a right smoke collection chamber with the smoke collecting panel. At this time, the smoke guide plate blocks the left area of ​​the smoke inlet, and the smoke collection chamber effectively enhances the suction effect of the oil smoke gas at the right burner through the right smoke collection chamber. In addition, the user can also control the extension distance of the left support arm or the right support arm to adjust the opening size of the smoke collection chamber according to the amount of oil smoke generated by cooking, and accordingly adjust the suction intensity of the smoke collection chamber on the oil smoke gas at the corresponding burner.

[0021] That is, the range hood can adjust the form of the smoke collecting chamber formed by the smoke guide plate according to the user's usage of the burner, so that the suction intensity when cooking with a single burner is greatly enhanced, and the suction effect of the range hood on cooking with a single burner is correspondingly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A front view of a range hood provided by an embodiment of the present invention;

[0024] Figure 2 A left side view of a range hood provided by an embodiment of the present invention, wherein the smoke guide plate is approximately parallel to the smoke collecting panel;

[0025] Figure 3A top view of a range hood in a first state provided by an embodiment of the present invention, wherein the smoke guide plate and the smoke collecting panel form a left smoke chamber;

[0026] Figure 4 A top view of the range hood in the second state provided by an embodiment of the present invention, wherein the smoke guide plate and the smoke collecting panel form a right smoke collecting chamber;

[0027] Figure 5 A schematic diagram of a smoke guide plate in a range hood provided by an embodiment of the present invention being connected to a driving device via a left supporting arm and a right supporting arm;

[0028] Figure 6 for Figure 5 A top view of the structure in which the middle smoke guide plate is connected to the drive device through the left support arm and the right support arm;

[0029] Figure 7 for Figure 6 A simplified diagram of the connection relationship between the middle smoke guide plate, the left support arm, the right support arm and the drive device.

[0030] Icons: 100-smoke hood; 110-smoke collecting panel; 120-smoke inlet; 130-left smoke chamber; 140-right smoke chamber; 200-smoke guide plate; 210-left plug-in shaft; 220-right plug-in shaft; 230-connecting plate; 310-left supporting arm; 311-left plug-in cylinder; 320-right supporting arm; 321-right plug-in cylinder; 330-right guide rail; 400-driving device; 410-telescopic driving assembly; 420-connecting arm; 430-limiting arm; 500-oil collecting box; 510-flow guide assembly; 600-fan cover; 700-fan. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0038] This embodiment provides a range hood, such as Figure 1-Figure 6 As shown, it includes a smoke collecting hood 100 and a smoke guide plate 200. The smoke collecting panel 110 of the smoke collecting hood 100 is provided with a smoke inlet 120. The smoke guide plate 200 is located outside the smoke inlet 120 and corresponds to the smoke inlet 120. The left area of ​​the inner wall of the smoke guide plate 200 is rotatably connected to the left supporting arm 310, and the right area is rotatably connected to the right supporting arm 320. The smoke collecting hood 100 is installed with a driving device 400. The driving end of the driving device 400 is connected to the left supporting arm 310 and the right supporting arm 320, and is used to drive the left supporting arm 310 and the right supporting arm 320 to perform telescopic movement. The smoke guide plate 200 rotates relative to the smoke collecting panel 110 under the telescopic action of the left supporting arm 310 and the right supporting arm 320, and forms a left smoke collecting chamber 130 and / or a right smoke collecting chamber 140 with the smoke collecting panel 110.

[0039] The range hood provided by the present invention includes a smoke collecting hood 100 with a smoke collecting chamber formed inside that can be used to install components and contain oil fume gas, a smoke guide plate 200 used to block the smoke inlet 120 of the smoke collecting hood 100 or to form a smoke collecting chamber together with the smoke collecting panel 110, a driving device 400 for driving the smoke guide plate 200 to move, and a left supporting arm 310 and a right supporting arm 320 connected between the driving device 400 and the smoke guide plate 200 as a linkage.

[0040] The left supporting arm 310 and the right supporting arm 320 are rotatably connected to the left and right parts of the smoke guide plate 200 respectively, and the left supporting arm 310 and the right supporting arm 320 can be extended toward the outside of the smoke collecting panel 110 or retracted toward the smoke collecting chamber under the driving action of the driving device 400, wherein the length of the left supporting arm 310 and the right supporting arm 320 extending outside the smoke collecting panel 110 directly determines the distance between the left and right rotating connections of the smoke guide plate 200 relative to the smoke collecting panel 110, and correspondingly can determine the angle formed between the smoke guide plate 200 and the smoke collecting panel 110 in the left and right directions, that is, the size of the smoke collecting chamber. Specifically, when the range hood is not needed, the smoke guide plate 200 can be located at any position. Preferably, the driving device 400 can drive the left supporting arm 310 and the right supporting arm 320 to retract into the smoke collecting chamber, and the smoke guide plate 200 moves toward the smoke collecting panel 110 accordingly until the smoke guide plate 200 is blocked at the smoke inlet 120 of the smoke collecting panel 110. At this time, the smoke guide plate 200 separates the smoke collecting chamber and the outside of the range hood into two relatively independent spaces, thereby reducing the secondary pollution to the kitchen caused by the oil smoke in the common flue returning to the kitchen through the smoke collecting chamber. When the user uses two burners to cook and produces oil smoke at the same time, the driving device 400 can be controlled to drive the left supporting arm 310 and the right supporting arm 320 to extend outward, and the smoke guide plate 200 moves outward accordingly. There are gaps between the left and right sides of the smoke guide plate 200 and the smoke collecting panel 110. Accordingly, the plate body in the left area of ​​the smoke guide plate 200 and the smoke collecting panel 110 form a left smoke chamber 130. The position of the left smoke chamber 130 corresponds to the position of the left burner up and down. The oil smoke gas generated by the left burner can pass through the left smoke chamber 130. The opening on the left side of the smoke chamber 130 flows into the left smoke chamber 130, and then flows into the smoke collecting chamber through the smoke inlet 120, and is then transported to the common flue; at the same time, the plate body in the right area of ​​the smoke guide plate 200 and the smoke collecting panel 110 form a right smoke chamber 140, and the position of the right smoke chamber 140 corresponds to the position of the right burner up and down. The oil smoke gas generated by the right burner can flow into the right smoke chamber 140 through the opening on the right side of the right smoke chamber 140, and then flow into the smoke collecting chamber through the smoke inlet 120, and is then transported to the common flue.

[0041] When the user only uses the left burner to cook and produces oil smoke, the driving device 400 can be controlled to drive the left supporting arm 310 to extend outward, and the left side of the smoke guide plate 200 is forced to rotate outward to form a left smoke chamber 130 between the smoke collecting panel 110 (in this process, the driving device 400 can be controlled to drive the right supporting arm 320 to extend outward a certain distance according to actual conditions to reduce the interference between the right side plate of the smoke guide plate 200 and the smoke collecting panel 110 during the rotation process). At this time, the right side position of the smoke guide plate 200 is approximately unchanged, and the distance between it and the smoke collecting panel 110 is small or even abutted. When the suction power in the cavity is constant, compared with the openings on both sides of the smoke inlet 120, the smoke guide plate 200 at this time can block the right area of ​​the air inlet, and the effective air inlet area of ​​the smoke inlet 120 is reduced, and the corresponding smoke collecting cavity enhances the suction effect of the oil fume gas at the left burner through the left smoke chamber 130; in addition, an effective clamping chamber with an opening facing left is formed between the smoke guide plate 200 and the smoke collecting panel 110, which can block the right side to reduce the amount of oil fume gas entering the left smoke chamber 130 and escaping to the outside, thereby further improving the suction effect of the range hood on the oil fume gas at the left burner. Similarly, when the user only uses the right burner to cook and produces oil smoke, the driving device 400 can be controlled to drive the right support arm 320 to extend outward, and the right side of the smoke guide plate 200 is forced to rotate outward to form a right smoke collecting chamber 140 with the smoke collecting panel 110. At this time, the smoke guide plate 200 blocks the left area of ​​the smoke inlet 120, and the smoke collecting chamber also effectively enhances the suction effect of the oil smoke gas at the right burner through the right smoke collecting chamber 140. In addition, the user can also control the extension distance of the left support arm 310 or the right support arm 320 according to the amount of oil smoke generated by cooking to adjust the opening size of the smoke collecting chamber, and accordingly adjust the suction strength of the smoke collecting chamber on the oil smoke gas at the corresponding burner.

[0042] That is, the range hood can adjust the form of the smoke collecting cavity formed by the smoke guide plate 200 according to the user's use of the burner, so that the suction intensity when cooking with a single burner is greatly enhanced, and the suction effect of the range hood on cooking with a single burner is correspondingly improved. According to simulation analysis, the range hood of the present application improves the suction effect of the single burner by nearly 15% compared with the prior art. In addition, the smoke guide plate 200 is rotatably connected to the left supporting arm 310 and the right supporting arm 320. The driving device 400 can realize the movement of the smoke guide plate 200 towards or away from the smoke collecting panel 110, as well as the rotational movement of the smoke guide plate 200 relative to the smoke collecting panel 110, only by driving the telescopic movement of the left supporting arm 310 and the right supporting arm 320. That is, the smoke guide plate 200 can achieve the adjustment of the distance and the rotation angle with the smoke collecting panel 110 under the telescopic action of the left supporting arm 310 and the right supporting arm 320, thereby achieving the adjustment of the orientation, form and size of the smoke chamber. Compared with the prior art that uses different driving devices to respectively drive the telescopic movement of the smoke guide plate and the rotational movement of the smoke guide plate, the structure of the present application is simpler and the linkage accuracy is higher.

[0043] It is understandable that the rotational connection between the smoke guide plate 200 and the left supporting arm 310 and the right supporting arm 320 can be a hinge, or other connection methods that can realize the rotation of the smoke guide plate 200 relative to the left supporting arm 310 and the right supporting arm 320.

[0044] Specifically, the telescopic movement of the left supporting arm 310 and the right supporting arm 320 relative to the smoke collecting panel 110 may include two situations: the supporting arm may be a telescopic rod whose length can be extended and retracted, and the driving device 400 drives the telescopic rod to extend or shorten to achieve telescopic movement relative to the smoke collecting panel 110, thereby achieving telescopic drive of the smoke guide plate 200; or, the supporting arm is a rigid arm, and the driving device 400 drives the supporting arm to move inward and outward relative to the smoke collecting panel 110 to achieve telescopic movement relative to the smoke collecting panel 110. Preferably, the smoke guide plate 200 can be an integrally formed plate body. When the driving device 400 drives the left supporting arm 310 and the right supporting arm 320 to telescope, the left and right side areas of the smoke guide plate 200 are respectively subjected to the telescopic forces of the left supporting arm 310 and the right supporting arm 320. The smoke guide plate 200 as a whole rotates relative to the smoke collecting panel 110 under the joint action of the two telescopic forces. The integrally formed plate body has high anti-deformation strength and linkage stability, thereby improving the position accuracy of the smoke guide plate 200 as the left supporting arm 310 and the right supporting arm 320 telescope or rotate.

[0045] It should be noted that the directions such as “left” and “right” mentioned in the text are defined based on the user facing the range hood when the range hood is in use, and are not limited thereto.

[0046] Optionally, in this embodiment, the left supporting arm 310 and the right supporting arm 320 can both extend toward the outside of the smoke collecting panel 110, and a left guide rail is fixedly provided in the left area of ​​the smoke collecting hood 100, and the left supporting arm 310 is slidably connected to the left guide rail along the length direction of the left guide rail; a right guide rail 330 is fixedly provided in the right area of ​​the smoke collecting hood 100, and the right supporting arm 320 is slidably connected to the right guide rail 330 along the length direction of the right guide rail 330. First, the left supporting arm 310 and the right supporting arm 320 are parallel to each other and both extend toward the outside of the smoke collecting panel 110. Then, the driving device 400 drives the extension length of the left supporting arm 310 and the right supporting arm 320 to control the distance and angle of the smoke guide plate 200 relative to the smoke collecting panel 110 more simply and conveniently, and the corresponding control accuracy is also higher; in addition, the movement stroke of the left supporting arm 310 and the right supporting arm 320 in the smoke collecting chamber is relatively regular, and the occupation of the smoke collecting chamber space and the interference with other components are also greatly reduced; secondly, the left guide rail can guide and limit the telescopic movement of the left supporting arm 310, and at the same time, the right guide rail 330 can also guide and limit the telescopic movement of the right supporting arm 320, which can further improve the position accuracy of the driving device 400 driving the telescopic movement of the two supporting arms, and correspondingly improve the movement position accuracy of the smoke guide plate 200. It should be noted that at this time, both the left supporting arm 310 and the right supporting arm 320 are rigid arms.

[0047] Optionally, in this embodiment, if Figure 5 and Figure 6 As shown, the driving device 400 may include a telescopic driving assembly 410, a connecting arm 420 and a limiting arm 430. One end of the connecting arm 420 is hinged to the left supporting arm 310, and the other end is hinged to the right supporting arm 320. The left supporting arm 310, the smoke guide plate 200, the right supporting arm 320 and the connecting arm 420 together constitute a parallelogram linkage mechanism. One end of the limiting arm 430 is fixedly connected to the smoke hood 100, and the other end is pivotally connected to the connecting arm 420. The driving end of the telescopic driving assembly 410 is connected to the left supporting arm 310, and is used to drive the left supporting arm 310 to slide back and forth along the left guide rail. This is a specific form of the driving device 400 driving the left supporting arm 310 and the right supporting arm 320 to telescopically move. In the initial state, as shown in FIG. Figure 2As shown, the left supporting arm 310 and the right supporting arm 320 extend a certain distance outside the smoke collecting panel 110. At this time, a left smoke collecting chamber 130 is formed between the left side of the smoke guide plate 200 and the smoke collecting panel 110, and a right smoke collecting chamber 140 is formed between the right side of the smoke guide plate 200 and the smoke collecting panel 110. When the user uses the left burner and the right burner to cook and produce oil smoke at the same time, the range hood can be directly turned on for use; in the parallelogram linkage mechanism composed of the left supporting arm 310, the right supporting arm 320, the connecting arm 420 and the smoke guide plate 200, the left supporting arm 310 is guided and limited in the length direction of the left guide rail, the right supporting arm 320 is guided and limited in the length direction of the right guide rail 330, and the connecting arm 420 is limited by the limiting arm 430 at the pivot point between the two. The relationship diagram is as shown in Figure 7 As shown in the figure (the solid line represents the initial position of the smoke guide plate 200, and the dotted line represents the position when the smoke guide plate 200 and the smoke collecting panel 110 form the left smoke chamber 130), the degree of freedom of the parallelogram linkage mechanism is 1, and the movement trajectory of the smoke guide plate 200 driven by the telescopic movement of the left supporting arm 310 is unique, and the movement position accuracy of the smoke guide plate 200 can be guaranteed.

[0048] When the user only uses the left burner to cook and produces oil smoke, Figure 3 As shown, the telescopic drive assembly 410 can be controlled to drive the left supporting arm 310 to extend outward along the left guide rail. Then, the connecting arm 420 rotates around the pivot point between the connecting arm 420 and the limiting arm 430 under the outward force of the left supporting arm 310 and the limiting action of the limiting arm 430. Accordingly, the right end of the connecting arm 420 drives the right supporting arm 320 to move inward along the right guide rail 330. Then, the left side of the smoke guide plate 200 moves outward under the pushing action of the left supporting arm 310, and the right side of the smoke guide plate 200 moves inward under the pulling back of the right supporting arm 320, until the right side of the smoke guide plate 200 reaches a smaller set distance with the smoke collecting panel 110 or even abuts against it, and the smoke guide plate 200 and the smoke collecting panel 110 form a left smoke chamber 130 with its opening facing left. When the user only uses the right burner to cook and generate oil smoke, as shown in FIG. Figure 4 As shown, the driving assembly can be controlled to drive the left supporting arm 310 to retract inward along the left guide rail, and the right supporting arm 320 to extend outward under the driving action of the connecting arm 420. Under the pulling action of the left supporting arm 310 and the pushing action of the right supporting arm 320, the smoke guide plate 200 forms a right smoke collecting chamber 140 with the smoke collecting panel 110, opening to the right.

[0049] The above arrangement enables a single drive assembly to be used in the range hood to realize the telescopic drive of both the left supporting arm 310 and the right supporting arm 320. On the one hand, it can reduce the number of power devices in the range hood, correspondingly reduce the cost of original parts, reduce the occupation of the internal space of the smoke collecting chamber by components, and reduce the consumption of electric energy by the drive assembly, thereby reducing the cost of use. On the other hand, compared with two drive assemblies driving the left supporting arm 310 and the right supporting arm 320 respectively, the driving synchronization and accuracy of the two drive assemblies are difficult to ensure. In the present application, only a single drive assembly is used for driving, and the left supporting arm 310 and the right supporting arm 320 are linked by the connecting arm 420, and the movement synchronization and position accuracy of the two are greatly improved. In addition, in actual use, the user can adjust the size of the smoke collecting chamber formed by the smoke guide plate 200 by controlling the telescopic length of the left supporting arm 310 according to the amount of oil smoke generated by the stove head; specifically, if Figure 3 As shown, the angle β between the smoke guide plate 200 and the smoke collecting panel 110 may be in the range of 0°-8°, and preferably, the angle between the left smoke collecting chamber 130 and the right smoke collecting chamber 140 may be in the range of 5°-8°.

[0050] Similarly, the driving end of the telescopic driving assembly 410 can also be connected to the right supporting arm 320 to drive the right supporting arm 320 to slide back and forth along the right guide rail 330. The working principle is similar to the above and will not be repeated here. In addition, it should be noted that during the rotation of the parallelogram linkage mechanism, the left supporting arm 310 and the right supporting arm 320 will have a small displacement in the left and right directions ( Figure 7 The displacement change is not shown in the figure), the thickness of the left guide rail and the right guide rail 330 can be deepened so that on the basis of guiding the left support arm 310 and the right support arm 320 in the length direction, they can also allow the left and right movements of the two.

[0051] Specifically, the telescopic driving assembly 410 may be a push rod motor, or may be a gear rack assembly, a screw nut assembly, or other assembly that can drive the supporting arm to reciprocate along its length direction.

[0052] In addition to the above-mentioned form, the driving device 400 may also include two driving components, which are respectively connected to the left supporting arm 310 and the right supporting arm 320 to drive the telescopic movement of the left supporting arm 310 and the right supporting arm 320 respectively.

[0053] Optionally, in this embodiment, if Figure 5 and Figure 6As shown, the pivotal connection between the limiting arm 430 and the connecting arm 420 is located in the middle of the length direction of the connecting arm 420 . When the pivot joint between the limiting arm 430 and the connecting arm 420 is located in the middle position of the connecting arm 420, the left supporting arm 310 is taken as the active arm for analysis. The left supporting arm 310 extends outward by a distance L under the driving action of the telescopic driving assembly 410, and the left end of the connecting arm 420 rotates around the pivot joint by an angle α. Then the right end of the connecting arm 420 rotates around the pivot joint in the opposite direction by an angle α, and the right end of the connecting arm 420 drives the right supporting arm 320 to retract inward by a distance L. Correspondingly, the left and right sides of the smoke guide plate 200 have opposite rotation directions and equal rotation angles. Then, the rotation movement of the smoke guide plate 200 is relatively uniform, and the size of the left smoke collecting chamber 130 and the right smoke collecting chamber 140 formed with the smoke collecting panel 110 are consistent, reducing the pivot joint from being biased toward one end, resulting in the rotation process of the smoke guide plate 200 being restricted by the interference of the smoke collecting panel 110, and the opening of the smoke collecting chamber corresponding to this end is smaller, which affects the suction effect. In addition, the above arrangement also makes it easier for designers to adjust the rotation angle of the smoke guide plate 200 and the like, with higher adjustment accuracy.

[0054] Specifically, in this embodiment, a plug connector can be provided at one end of the limit arm 430 facing the connecting arm 420, and the connecting arm 420 is provided with a plug slot, and the plug connector is plugged into the plug slot. This is a specific form in which the limit arm 430 is pivotally connected to the connecting arm 420, and the plug connector of the limit arm 430 is plugged into the plug slot on the connecting arm 420, and the plug connector can rotate in the plug slot, thereby realizing the rotation of the connecting arm 420 around the pivot point; in addition, since the position of the plug connector is fixed, the radial position of the plug slot can be limited accordingly, thereby realizing the position limitation of the hinge axis.

[0055] Optionally, in this embodiment, if Figure 3 and Figure 5As shown, a left plug-in tube 311 with an opening facing upward can be provided at one end of the left supporting arm 310 facing the smoke guide plate 200, a left plug-in shaft 210 is provided on the inner wall of the smoke guide plate 200, and the left plug-in shaft 210 is plugged into the left plug-in tube 311 from top to bottom; similarly, a right plug-in tube 321 with an opening facing upward can be provided at one end of the right supporting arm 320 facing the smoke guide plate 200, a right plug-in shaft 220 is provided on the inner wall of the smoke guide plate 200, and the right plug-in shaft 220 is plugged into the right plug-in tube 321 from top to bottom. This is a specific form in which the left supporting arm 310 and the right supporting arm 320 are rotatably connected to the smoke guide plate 200, wherein the left plug-in shaft 210 can rotate in the left plug-in tube 311 to realize the rotatable connection between the left supporting arm 310 and the smoke guide plate 200; the right plug-in shaft 220 can rotate in the right plug-in tube 321 to realize the rotatable connection between the right supporting arm 320 and the smoke guide plate 200. In addition, when the smoke guide plate 200 needs to be installed, it is only necessary to align the left plug-in shaft 210 on the smoke guide plate 200 with the left plug-in tube 311 and insert it, and at the same time, align the right plug-in shaft 220 with the right plug-in tube 321 and insert it, and the smoke guide plate 200 can be hung on the outer ends of the left supporting arm 310 and the right supporting arm 320; when the smoke guide plate 200 needs to be removed, it is only necessary to move the smoke guide plate 200 upwards, pull out the left plug-in shaft 210 from the left plug-in tube 311, and at the same time, pull out the right plug-in shaft 220 from the right plug-in tube 321. The smoke guide plate 200 is easy to disassemble and assemble, and it is also convenient to repair or clean the smoke guide plate 200 and various components in the smoke collecting chamber, which can effectively improve the convenience of using the range hood.

[0056] Similarly, a left plug-in shaft 210 may be provided at one end of the left support arm 310 facing the smoke guide plate 200, a left plug-in tube 311 with an opening facing downwards is provided on the inner wall of the smoke guide plate 200, and the left plug-in shaft 210 is plugged into the left plug-in tube 311 from bottom to top; a right plug-in shaft 220 may be provided at one end of the right support arm 320 facing the smoke guide plate 200, a right plug-in tube 321 with an opening facing downwards is provided on the inner wall of the smoke guide plate 200, and the right plug-in shaft 220 is plugged into the right plug-in tube 321 from bottom to top. This is another form of rotational connection between the smoke guide plate 200 and the left support arm 310 and the right support arm 320, and the principle and method of use are similar to those above, and will not be repeated here.

[0057] In addition to the above-mentioned forms of rotational connection between the smoke guide plate 200 and the left supporting arm 310 and the right supporting arm 320, a hinge ear can be fixedly connected to the inner wall of the smoke guide plate 200, and one end of the supporting arm facing the smoke guide plate 200 is hinged to the hinge ear through a hinge shaft, thereby realizing the hinge connection between the supporting arm and the smoke guide plate 200. When the driving device 400 drives the left supporting arm 310 and the right supporting arm 320 to telescope, the smoke guide plate 200 can telescope under the telescopic action of the supporting arm, and at the same time rotate around the hinge shaft to realize rotational movement relative to the smoke collecting panel 110.

[0058] In this embodiment, Figure 5As shown, the connecting plate 230 can be glued to the inner wall of the smoke guide plate 200, and the left supporting arm 310 and the right supporting arm 320 are both hinged to the connecting plate 230. The left supporting arm 310 and the right supporting arm 320 are both hinged to the smoke guide plate 200 through the connecting plate 230, which can effectively reduce the damage to the strength and sealing of the connecting structure caused by punching holes in the smoke guide plate 200, thereby extending the service life of the smoke guide plate 200 and improving its sealing and appearance smoothness.

[0059] In this embodiment, Figure 1 and Figure 2 As shown, an oil collecting box 500 can be detachably fixed at the bottom of the smoke collecting hood 100. During the use of the range hood, the oil stains adhered to the smoke collecting hood 100 and other components flow downward into the oil collecting box 500, and the oil collecting box 500 can receive the oil stains to reduce the pollution caused by the oil stains directly dripping downward onto the stove or pots; after using for a period of time, the oil collecting box 500 can be removed for cleaning, and after the cleaning is completed, it can be reinstalled on the smoke collecting hood 100 for repeated use.

[0060] In this embodiment, Figure 1 and Figure 2 As shown, the smoke hood 100 may be provided with a guide assembly 510, which is located between the oil collecting box 500 and the smoke guide plate 200, and is used to guide the oil stains dripping from the smoke guide plate 200 into the oil collecting box 500. Since the smoke guide plate 200 is located outside the smoke hood 100, the oil stains adhered to the smoke guide plate 200 cannot flow directly into the oil collecting box 500, so the guide assembly 510 is provided, and the oil stains on the smoke guide plate 200 can drip downward into the guide assembly 510, and then flow into the oil collecting box 500 under the guiding effect of the guide assembly 510, thereby reducing the pollution caused by the oil stains dripping from the smoke guide plate 200 to the stove and pots.

[0061] Specifically, Figure 3 and Figure 4 As shown, a fan cover 600 may be connected above the smoke collecting hood 100, and a fan 700 may be installed in the fan cover 600. The fan 700 serves as a suction power source of the range hood to suck external oil smoke.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A range hood, characterized in that: The invention comprises a smoke collecting hood (100) and a smoke guide plate (200); the smoke collecting panel (110) of the smoke collecting hood (100) is provided with a smoke inlet (120); the smoke guide plate (200) is located outside the smoke inlet (120) and corresponds to the smoke inlet (120); a left area of ​​the inner wall of the smoke guide plate (200) is rotatably connected to a left supporting arm (310), and a right area is rotatably connected to a right supporting arm (320); the smoke collecting hood (100) is installed with a driving device (400); The driving end of the driving device (400) is connected to the left supporting arm (310) and the right supporting arm (320) and is used to drive the left supporting arm (310) and the right supporting arm (320) to perform telescopic movement. Under the telescopic action of the left supporting arm (310) and the right supporting arm (320), the smoke guide plate (200) rotates relative to the smoke collecting panel (110) to form a left smoke collecting chamber (130) and / or a right smoke collecting chamber (140) with the smoke collecting panel (110); The left supporting arm (310) and the right supporting arm (320) both extend toward the outside of the smoke collecting panel (110); a left guide rail is fixedly provided in the left area of ​​the smoke collecting hood (100), and the left supporting arm (310) is slidably connected to the left guide rail along the length direction of the left guide rail; a right guide rail (330) is fixedly provided in the right area of ​​the smoke collecting hood (100), and the right supporting arm (320) is slidably connected to the right guide rail (330) along the length direction of the right guide rail (330); The driving device (400) comprises a telescopic driving assembly (410), a connecting arm (420) and a limiting arm (430); one end of the connecting arm (420) is hinged to the left supporting arm (310), and the other end is hinged to the right supporting arm (320); and the left supporting arm (310), the smoke guide plate (200), the right supporting arm (320) and the connecting arm (420) together constitute a parallelogram linkage mechanism; one end of the limiting arm (430) is fixedly connected to the smoke collecting hood (100), and the other end is pivotally connected to the connecting arm (420); The driving end of the telescopic driving assembly (410) is connected to the left supporting arm (310) and is used to drive the left supporting arm (310) to slide back and forth along the left guide rail; or, the driving end of the telescopic driving assembly (410) is connected to the right supporting arm (320) and is used to drive the right supporting arm (320) to slide back and forth along the right guide rail (330).

2. The range hood according to claim 1, characterized in that: The pivot point between the limiting arm (430) and the connecting arm (420) is located in the middle of the length direction of the connecting arm (420).

3. The range hood according to claim 1, characterized in that: One end of the limiting arm (430) facing the connecting arm (420) is provided with a plug connector, and the connecting arm (420) is provided with a plug connector slot, and the plug connector is plugged into the plug connector slot.

4. The range hood according to any one of claims 1 to 3, characterized in that: The angle between the smoke guide plate (200) and the smoke collecting panel (110) ranges from 0° to 8°.

5. The range hood according to any one of claims 1 to 3, characterized in that: The left support arm (310) is provided with a left plug-in tube (311) with an opening facing upward at one end thereof facing the smoke guide plate (200), and a left plug-in shaft (210) is provided on the inner wall of the smoke guide plate (200), and the left plug-in shaft (210) is plugged into the left plug-in tube (311) from top to bottom; the right support arm (320) is provided with a right plug-in tube (321) with an opening facing upward at one end thereof facing the smoke guide plate (200), and a right plug-in shaft (220) is provided on the inner wall of the smoke guide plate (200), and the right plug-in shaft (220) is plugged into the right plug-in tube (321) from top to bottom; Alternatively, a left plug-in shaft (210) is provided at one end of the left supporting arm (310) facing the smoke guide plate (200), a left plug-in tube (311) with an opening facing downward is provided on the inner wall of the smoke guide plate (200), and the left plug-in shaft (210) is plugged into the left plug-in tube (311) from bottom to top; a right plug-in shaft (220) is provided at one end of the right supporting arm (320) facing the smoke guide plate (200), a right plug-in tube (321) with an opening facing downward is provided on the inner wall of the smoke guide plate (200), and the right plug-in shaft (220) is plugged into the right plug-in tube (321) from bottom to top.

6. The range hood according to any one of claims 1 to 3, characterized in that: A connecting plate (230) is glued to the inner wall of the smoke guide plate (200), and the left supporting arm (310) and the right supporting arm (320) are both hinged to the connecting plate (230).

7. The range hood according to any one of claims 1 to 3, characterized in that: The smoke guide plate (200) is an integrally formed plate.

8. The range hood according to claim 7, characterized in that: An oil collecting box (500) is detachably fixedly mounted at the bottom of the smoke collecting hood (100), and the smoke collecting hood (100) is provided with a flow guide component (510). The flow guide component (510) is located between the oil collecting box (500) and the smoke guide plate (200) and is used to guide oil stains dripping from the smoke guide plate (200) into the oil collecting box (500).

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