Range hood

Abstract

This application discloses a range hood, relating to the field of kitchen equipment technology. The range hood includes a housing and a flow guiding device; the housing forms a smoke collection chamber, and the flow guiding device forms a flow guiding cavity for communicating with the smoke collection chamber. The flow guiding device is movably connected to the housing, having a switchable first state and a second state. In the first state, the flow guiding device is entirely housed within the smoke collection chamber; in the second state, at least part of the flow guiding device extends out of the housing, allowing the flow guiding cavity to communicate with the outside. This application's technical solution allows the flow guiding device to be entirely housed within the smoke collection chamber when the range hood is in an idle state, saving the overall space occupied by the range hood.

Description

Technical Field

[0001] This application relates to the field of kitchen equipment technology, and in particular to a range hood. Background Technology

[0002] A range hood is a household appliance used to purify the kitchen environment. Installed above the stove, it quickly removes waste from combustion and harmful fumes produced during cooking, expelling them outdoors. It also condenses and collects these fumes, reducing pollution, purifying the air, and providing safety features such as protection against toxic substances and explosions.

[0003] To ensure sufficient air inlet size for range hoods while reducing their overall volume, side-draft range hoods were developed. By tilting the end face of the air inlet, the space occupied at the bottom of the range hood is reduced. However, to ensure the smoke collection capacity of the air inlet, the upper part of the end face of the air inlet still needs to occupy a large space, and it also affects the aesthetics when not in use. Summary of the Invention

[0004] This application provides a range hood that solves the problem of existing range hoods occupying a large amount of space when not in use.

[0005] This application provides a range hood, including:

[0006] The casing forms a smoke collection chamber; and

[0007] A flow guiding device is formed with a flow guiding cavity for communicating with the smoke collection chamber, and the flow guiding device is movably connected to the housing to have a switchable first state and a second state. When the flow guiding device is in the first state, it is completely housed in the smoke collection chamber. When the flow guiding device is in the second state, it extends at least partially out of the housing so that the flow guiding cavity communicates with the outside.

[0008] In one embodiment, the flow guiding device is rotatably connected to the housing, and the range hood further includes:

[0009] A drive component is connected to the housing and drives the flow guiding device to switch between a first state and a second state.

[0010] In one embodiment, the housing is provided with an installation port. When the flow guiding device is in the second state, the flow guiding device extends out of the housing through the installation port. The range hood further includes:

[0011] An opening and closing panel is movably connected to the housing. The opening and closing panel is used to cover the flow guiding cavity and the mounting port when the flow guiding device is in the first state.

[0012] In one embodiment, the upper end of the opening and closing panel is rotatably connected to the housing;

[0013] The upper end of the flow guiding device is rotatably connected to the opening and closing panel, and the lower end of the flow guiding device is slidably connected to the housing.

[0014] When the flow guiding device switches to the first state, the opening and closing panel simultaneously covers the mounting port.

[0015] In one embodiment, a sliding assembly slidably connected to the housing is further included, the sliding assembly comprising:

[0016] Two sliding grooves are provided on two opposite inner sidewalls of the housing, the sliding grooves being inclined downwards in a direction away from the mounting opening; and...

[0017] A slider is slidably connected within the groove, and the flow guiding device is rotatably connected to the slider.

[0018] In one embodiment, the upper end of the opening and closing panel is rotatably connected to the housing;

[0019] The upper end of the flow guiding device is slidably connected to the opening and closing panel, and the lower end of the flow guiding device is rotatably connected to the housing;

[0020] When the flow guiding device switches to the first state, the opening and closing panel simultaneously covers the mounting port.

[0021] In one embodiment, the driving component includes:

[0022] Drive components;

[0023] The telescopic rod is connected to the output end of the drive unit; and

[0024] The connecting rod is rotatably connected at one end to the telescopic rod and at the other end to the opening / closing panel or the flow guide device.

[0025] In one embodiment, the flow guiding device includes:

[0026] The flow guide portion, wherein the flow guide cavity is formed in the flow guide portion; and

[0027] Two mounting parts are located on the left and right sides of the flow guide and are rotatably connected to the housing and the opening and closing panel;

[0028] The connecting rod passes between the two mounting parts and is located on the rear side of the guide part.

[0029] In one embodiment, the opening and closing panel is provided with a first bracket, and the flow guiding device is provided with a second bracket, wherein the first bracket is rotatably connected to the second bracket via a rotating shaft.

[0030] In one embodiment, when the flow guiding device is in the second state, the opening of the flow guiding cavity is inclined downward in a direction away from the housing.

[0031] In one embodiment, it further includes:

[0032] A control module is located in the housing and electrically connected to the drive assembly, used to control the operation of the drive assembly.

[0033] This application's range hood achieves two different states for the guide device relative to the housing, and the ability to switch between these states. In the second state, the guide device extends at least partially outside the housing. When the range hood is operating, the guide device switches to this second state, connecting the guide cavity formed by the device to the outside environment and the smoke collection chamber, thus guiding external fumes into the smoke collection chamber for cleaning and purification of the kitchen environment. In the first state, the guide device is entirely housed within the smoke collection chamber. When the range hood is idle, the guide device switches back to the first state, completely concealing itself within the smoke collection chamber, saving the space occupied by the portion extending from the housing for its guide function. Simultaneously, the housing's overall concealment of the guide device improves the aesthetics of the range hood when idle. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of an embodiment of the range hood of the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of an embodiment of the range hood of the present invention, in which the flow guiding device is in the second state;

[0037] Figure 3 for Figure 2 Schematic diagram of the cross section at point AA;

[0038] Figure 4 This is a schematic diagram of the structure of an embodiment of the range hood of the present invention, in which the flow guiding device is in the first state;

[0039] Figure 5 for Figure 4 Schematic diagram of the cross section at point BB;

[0040] Figure 6 This is a schematic diagram of the flow guiding device in one embodiment of the range hood of the present invention.

[0041] Explanation of icon numbers:

[0042] 10. Range hood; 100. Housing; 110. Smoke collection chamber; 120. Mounting port; 200. Flow guiding device; 210. Flow guiding part; 211. Flow guiding cavity; 220. Mounting part; 300. Drive assembly; 310. Drive component; 320. Telescopic rod; 330. Connecting rod; 400. Opening and closing panel; 500. Sliding assembly; 510. Slide groove; 520. Slider; 610. First bracket; 620. Second bracket.

[0043] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0045] Where the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0046] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0048] In order to reduce its own space occupation while meeting the requirements of smoke collection capacity at the air inlet, existing range hoods have been designed with the end face of the air inlet set at an angle. This reduces the space occupied at the bottom of the range hood, but the top part still needs to occupy a large space, and it affects the aesthetics while occupying space when not in use.

[0049] To address the aforementioned issues, this application proposes a range hood 10.

[0050] Please see Figures 1 to 5 In this embodiment, the range hood 10 includes a housing 100 and a flow guiding device 200. The housing 100 forms a smoke collection chamber 110, and the flow guiding device 200 forms a flow guiding cavity 211 for communicating with the smoke collection chamber 110. The flow guiding device 200 is movably connected to the housing 100 and has a switchable first state and a second state. When the flow guiding device 200 is in the first state, it is entirely housed within the smoke collection chamber 110. When the flow guiding device 200 is in the second state, it extends at least partially outside the housing 100, so that the flow guiding cavity 211 communicates with the outside.

[0051] The range hood 10 movably connects the flow guiding device 200 to the housing 100, enabling the flow guiding device 200 to have two different states relative to the housing 100, and the ability to switch between the two states. When the flow guiding device 200 is in the second state, it extends at least partially outside the housing 100. When the range hood 10 is operating, the flow guiding device 200 switches to the second state, causing the flow guiding cavity 211 formed by the flow guiding device 200 to connect the outside environment and the smoke collection chamber 110, thereby guiding external fumes into the smoke collection chamber 110 and achieving a clean and purified kitchen environment. When the flow guiding device 200 is in the first state, it is completely housed within the smoke collection chamber 110. When the range hood 10 is in an idle state, the flow guiding device 200 switches to the first state, so that the flow guiding device 200 is completely housed within the smoke collection chamber 110, saving the space occupied by the portion of the flow guiding device 200 that extends out of the housing 100 to achieve the flow guiding function. At the same time, because the housing 100 completely covers the flow guiding device 200, the overall aesthetics of the range hood 10 are improved when it is in an idle state.

[0052] The flow guiding device 200 is movably connected to the housing 100 in several ways, including a detachable connection. The flow guiding device 200 is fixed relative to the housing 100 in both the first and second states via snap-fit ​​or magnetic connection, and can be switched between the first and second states by manual disassembly and installation. Alternatively, the flow guiding device 200 can be movably connected to the housing 100 via a sliding connection. The flow guiding device 200 is slidable relative to the housing 100. Pulling the flow guiding device 200 away from the housing 100 switches it to the second state, and pushing it towards the housing 100 switches it to the first state. The flow guiding device 200 can also be movably connected to the housing 100 in other ways, as long as it can achieve the function of being fixed relative to the housing 100 in both the first and second states and switching between the two states.

[0053] Please see Figure 3 and Figure 5 Specifically, in one embodiment, the flow guiding device 200 is rotatably connected to the housing 100. The flow guiding device 200 can rotate around its connection point with the housing 100. Taking the lower end of the flow guiding device 200 rotatably connected to the housing 100 as an example, the upper part of the flow guiding device 200 rotates away from the housing 100 until it extends outside the housing 100. As the rotation angle increases, the portion of the flow guiding device 200 extending outside the housing 100 increases until the flow guiding device 200 switches to the second state. Similarly, the upper part of the flow guiding device 200 rotates towards the housing 100 until the entire flow guiding device 200 is housed within the smoke collection chamber 110, thus switching the flow guiding device 200 to the first state.

[0054] Furthermore, the range hood 10 also includes a drive assembly 300, which is connected to the housing 100 and drives the flow guiding device 200 to switch between a first state and a second state. By providing the drive assembly 300, assistance is provided to the user when switching the state of the flow guiding device 200, and even automatic switching of the state of the flow guiding device 200 is achieved, avoiding manual operation by the user and making the process of switching the state of the flow guiding device 200 more convenient and faster.

[0055] Please see Figure 2 and Figure 3In one embodiment, the housing 100 is provided with an installation port 120. When the flow guiding device 200 is in the second state, the flow guiding device 200 extends out of the housing 100 through the installation port 120. The range hood 10 also includes an opening and closing panel 400, which is movably connected to the housing 100. The opening and closing panel 400 is used to cover the flow guiding cavity 211 and the installation port 120 when the flow guiding device 200 is in the first state.

[0056] By providing an installation port 120 on the housing 100, the flow guiding device 200 can extend out of the housing 100 through the installation port 120 to switch to the second state, and then retract back into the smoke collection chamber 110 through the installation port 120 to switch to the first state. Considering that some oil fumes remain in the smoke collection chamber 110 and the flow guiding chamber 211 after the flow guiding device 200 switches from the second state to the first state, in order to prevent the residual oil fumes from flowing back into the room through the installation port 120, the opening and closing panel 400 is movably installed on the housing 100. When the flow guiding device 200 is in the first state, the opening and closing panel 400 can cover the flow guiding chamber 211 and the installation port 120 to block the oil fumes in the smoke collection chamber 110 and the flow guiding chamber 211. Meanwhile, after the opening and closing panel 400 covers the air guide cavity 211 and the mounting port 120, it further improves the overall integrity and aesthetics of the range hood 10 when it is idle. It can also prevent dust from entering through the mounting port 120 and accumulating in the smoke collection cavity 110 and the air guide cavity 211 when the range hood 10 is idle for a long time.

[0057] It is understood that the size and shape of the mounting opening 120 are adapted to the size and shape of the guide device 200, so that the guide device 200 can just pass through the mounting opening 120, while ensuring that when the guide device 200 extends out of the housing 100, the gap between the guide device 200 and the edge of the mounting opening 120 is not too large, thus avoiding affecting the normal discharge of oil fumes from the smoke collection chamber 110 and the guide chamber 211. Correspondingly, the size and shape of the opening and closing panel 400 are adapted to the size and shape of the mounting opening 120, so that the opening and closing panel 400 can completely cover the mounting opening 120.

[0058] Please continue reading. Figure 3 and Figure 5 In one embodiment, the upper end of the opening and closing panel 400 is rotatably connected to the housing 100; the upper end of the flow guiding device 200 is rotatably connected to the opening and closing panel 400, and the lower end of the flow guiding device 200 is slidably connected to the housing 100; wherein, when the flow guiding device 200 is switched to the first state, the opening and closing panel 400 simultaneously covers the mounting port 120.

[0059] Taking the installation of the range hood 10 with the user-facing side of the housing 100 as an example, the mounting port 120 is located on the front of the housing 100. The upper end of the opening panel 400 is rotatably connected to the housing 100, allowing the lower end of the opening panel 400 to rotate upwards relative to its upper end, thus opening the opening panel 400 and the mounting port 120. During the upward rotation of the upper end of the opening panel 400, because the upper end of the airflow guiding device 200 is rotatably connected to the opening panel 400, and the lower end of the airflow guiding device 200 is rotatably connected to the housing 100, the upper end of the airflow guiding device 200 tends to rotate forward relative to its lower end under the influence of the opening panel 400. As the upward rotation angle of the opening and closing panel 400 increases, the distance between the connection point of the flow guiding device 200 and the opening and closing panel 400 and the mounting port 120 also increases. In order to satisfy the linkage between the opening and closing action of the opening and closing panel 400 and the state switching action of the flow guiding device 200, the lower end of the flow guiding device 200 can slide relative to the housing 100 while being rotatably connected to the housing 100. This allows the upper end of the flow guiding device 200 to rotate forward relative to the lower end under the action of opening the opening and closing panel 400, while the entire flow guiding device 200 slides forward under the action of opening the opening and closing panel 400 until the flow guiding device 200 switches to the first state.

[0060] Similarly, the upper end of the flow guiding device 200 rotates backward relative to the lower end under the action of closing the opening and closing panel 400. At the same time, the entire flow guiding device 200 slides backward under the action of closing the opening and closing panel 400 until the flow guiding device 200 switches to the second state, that is, the opening and closing panel 400 covers the mounting port 120, so that the opening and closing action of the opening and closing panel 400 and the state switching action of the flow guiding device 200 are synchronized.

[0061] Please see Figure 3 In one embodiment, the range hood 10 further includes a sliding assembly 500 slidably connected to the housing 100. The sliding assembly 500 includes two sliding grooves 510 and two sliding blocks 520. The two sliding grooves 510 are respectively disposed on two opposite inner sidewalls of the housing 100, and the sliding grooves 510 are inclined downward in a direction away from the mounting port 120. The two sliding blocks 520 are slidably connected to the two sliding grooves 510, and the flow guiding device 200 is rotatably connected to the sliding blocks 520.

[0062] It is understood that during the opening and closing process of the panel 400, the connection point between the flow guiding device 200 and the panel 400 can be considered as a connection point. As the panel 400 opens, the movement trajectory of this connection point is a forward-convex arc. That is, during the process of switching to the second state, the overall movement trajectory of the flow guiding device 200 is obliquely upward. By providing sliding grooves 510 that are inclined downward toward the mounting port 120 on the two opposite inner sidewalls of the housing 100, i.e., the left and right inner sidewalls, and then providing sliders 520 that are slidably connected to the two sliding grooves 510, the flow guiding device 200 can be rotated relative to the housing 100 and also slide relative to the housing 100 by rotating the lower end of the flow guiding device 200 to the slider 520.

[0063] In another embodiment, the upper end of the opening and closing panel 400 is rotatably connected to the housing 100; the upper end of the flow guiding device 200 is slidably connected to the opening and closing panel 400, and the lower end of the flow guiding device 200 is rotatably connected to the housing 100; wherein, when the flow guiding device 200 is switched to the first state, the opening and closing panel 400 simultaneously covers the mounting port 120.

[0064] By slidably connecting the upper end of the flow guiding device 200 to the opening and closing panel 400, when the opening and closing panel 400 is opened, the upper end of the flow guiding device 200 rotates forward relative to the lower end under the action of the opening and closing panel 400, while the upper end of the flow guiding device 200 slides downward relative to the opening and closing panel 400. This avoids the problem that the flow guiding device 200 needs to be moved as a whole to achieve synchronous action between the two because the connection position with the opening and closing panel 400 is fixed.

[0065] Specifically, a vertically extending groove can be provided on the inner side of the opening and closing panel 400, and a slider can be provided slidably connected in the groove. Finally, by rotating the upper end of the flow guiding device 200 to the slider, the upper end of the flow guiding device 200 can rotate relative to the lower end and slide relative to the opening and closing panel 400.

[0066] As can be seen from the above, through the reasonable connection between the housing 100, the flow guiding device 200 and the opening and closing panel 400, the opening and closing action of the opening and closing panel 400 and the state switching action of the flow guiding device 200 can be synchronized. Therefore, the driving component 300 can drive the opening and closing panel 400 to perform opening and closing actions, thereby driving the flow guiding device 200 to switch states, and thus realizing that the driving component 300 drives the flow guiding device 200 to switch between the first state and the second state.

[0067] In one embodiment, the drive assembly 300 includes a drive member 310, a telescopic rod 320, and a connecting rod 330; the telescopic rod 320 is connected to the output end of the drive member 310, one end of the connecting rod 330 is rotatably connected to the telescopic rod 320, and the other end is rotatably connected to the opening and closing panel 400.

[0068] Taking the telescopic rod 320 arranged vertically and the connecting rod 330 extending in the front-to-back direction as an example, one end of the connecting rod 330 is rotatably connected to the telescopic rod 320, and the other end is rotatably connected to the opening and closing panel 400. During the telescopic movement of the telescopic rod 320, it drives the connecting rod 330 to move synchronously upward or downward at one end connected to the telescopic rod 320, i.e., the rear end. At the same time, the connecting rod 330 rotates relative to the rear end at one end connected to the opening and closing panel 400, causing the length of the projection of the connecting rod 330 in the horizontal direction to change. When the projected length increases, the connecting rod 330 pushes forward against the opening and closing panel 400, realizing the opening and closing of the panel 400; when the projected length decreases, the connecting rod 330 pulls back the opening and closing panel 400, realizing the closing of the panel 400.

[0069] It is understandable that when the opening / closing panel 400 operates first, its opening and closing action can drive the state switching action of the flow guiding device 200. Similarly, when the flow guiding device 200 operates first, its state switching action can also drive the opening and closing action of the opening / closing panel 400. Therefore, the driving component 300 can drive the flow guiding device 200, directly enabling the flow guiding device 200 to switch between a first state and a second state, and then using the flow guiding device 200 to drive the opening / closing panel 400, thus realizing the opening and closing of the opening / closing panel 400. In another embodiment, the driving component 300 includes a driving member 310, a telescopic rod 320, and a connecting rod 330; the telescopic rod 320 is connected to the output end of the driving member 310, one end of the connecting rod 330 is rotatably connected to the telescopic rod 320, and the other end is rotatably connected to the flow guiding device 200.

[0070] Specifically, the driving component 310 includes, but is not limited to, a motor, a cylinder, etc., which converts the rotation of the motor into the extension and retraction of the telescopic rod 320 through gear transmission or belt transmission.

[0071] Please see Figure 3 and Figure 6In one embodiment, the flow guiding device 200 includes a flow guiding section 210 and a connecting rod 330 mounting section 220. The flow guiding cavity 211 is formed in the flow guiding section 210. The two mounting sections 220 are respectively disposed on the left and right sides of the flow guiding section 210 and are rotatably connected to the housing 100 and the opening and closing panel 400. The connecting rod 330 passes between the two mounting sections 220 and is located on the rear side of the flow guiding section 210.

[0072] Specifically, the guide cavity 211 is flared in the front-to-back direction, with a larger opening at its front end, which increases the smoke extraction area of ​​the range hood 10 during operation. By inserting the connecting rod 330 between the two mounting portions 220 and positioning it behind the guide portion 210, the sidewalls of the mounting portions 220 and the guide portion 210 can provide some shielding for the connecting rod 330 and the telescopic rod 320, preventing the inhaled fumes from flowing directly across them and affecting their normal operation and service life.

[0073] Preferably, when the flow guiding device 200 is in the second state, the upper end face of the mounting part 220 abuts against the opening and closing panel 400, and the mounting part 220 serves to support the opening and closing panel 400.

[0074] In one embodiment, when the flow guiding device 200 is in the second state, the opening of the flow guiding cavity 211 is inclined downwards in a direction away from the housing 100. It can be understood that at this time, an angle is formed between the opening panel 400 and the flow guiding device 200, which improves the smoke collection ability of the range hood 10 and reduces the escape of smoke and oil to the surroundings.

[0075] Please see Figure 3 and Figure 5In one embodiment, the opening / closing panel 400 is provided with a first bracket 610, and the flow guiding device 200 is provided with a second bracket 620. The first bracket 610 is rotatably connected to the second bracket 620 via a rotating shaft. Specifically, the first bracket 610 and the second bracket 620 are provided with opposing connecting holes, and the rotating shaft passes through the connecting holes of the first bracket 610 and the second bracket 620, realizing the rotation of the first bracket 610 and the second bracket 620 around the rotating shaft, that is, realizing the rotational connection between the opening / closing panel 400 and the flow guiding device 200. Preferably, the opening / closing panel 400 is provided with the first bracket 610 at both ends in the length direction, and the flow guiding device 200 is also provided with two corresponding second brackets 620. By increasing the number of connection points between the opening / closing panel 400 and the flow guiding device 200, the stability of the rotational connection between the two is improved. When the connecting rod 330 is rotatably connected to the opening and closing panel 400 or the flow guiding device 200, the connection can also be achieved through the first bracket 610 and the second bracket 620. It is only necessary to provide multiple different connection holes on the first bracket 610 and the second bracket 620.

[0076] Specifically, a hinge connects the upper end of the opening / closing panel 400 and the housing 100, enabling a rotatable connection between the opening / closing panel 400 and the housing 100. Alternatively, a third bracket can be provided on the housing 100, with the first bracket 610 and the third bracket rotatably connected via a pivot, thus achieving a rotatable connection between the opening / closing panel 400 and the housing 100.

[0077] In one embodiment, the range hood 10 further includes a control module, which is located in the housing 100 and electrically connected to the drive assembly 300, for controlling the operation of the drive assembly 300.

[0078] By pre-setting corresponding control commands within the control module, the states of the flow guiding device 200 can be easily switched. For example, a closing command corresponding to the first state and an opening command corresponding to the second state can be provided. When the control module receives the opening command, the flow guiding device 200 switches to the second state, at which point the range hood 10 can be turned on to draw cooking fumes into the smoke collection chamber 110 through the flow guiding cavity 211. When the control module receives the closing command, the flow guiding device 200 switches to the first state, at which point the entire flow guiding device 200 is housed within the smoke collection chamber 110, reducing the space occupied by the range hood 10. Specifically, commands can be sent wirelessly to the control module via a remote control device, or multiple command buttons connected to the control module can be installed on the exterior of the housing 100 or on the panel to send commands.

[0079] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0080] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A range hood, characterized in that, include: The casing has a smoke collection chamber. as well as A flow guiding device is formed with a flow guiding cavity for communicating with the smoke collection chamber, and the flow guiding device is movably connected to the housing to have a switchable first state and a second state. When the flow guiding device is in the first state, it is completely housed in the smoke collection chamber. When the flow guiding device is in the second state, it extends at least partially out of the housing so that the flow guiding cavity communicates with the outside.

2. The range hood as described in claim 1, characterized in that, The flow guiding device is rotatably connected to the housing, and the range hood further includes: A drive component is connected to the housing and drives the flow guiding device to switch between a first state and a second state.

3. The range hood as described in claim 2, characterized in that, The housing is provided with an installation port. When the flow guiding device is in the second state, the flow guiding device extends out of the housing through the installation port. The range hood also includes: An opening and closing panel is movably connected to the housing. The opening and closing panel is used to cover the flow guiding cavity and the mounting port when the flow guiding device is in the first state.

4. The range hood as described in claim 3, characterized in that, The upper end of the opening and closing panel is rotatably connected to the housing; The upper end of the flow guiding device is rotatably connected to the opening and closing panel, and the lower end of the flow guiding device is slidably connected to the housing. When the flow guiding device switches to the first state, the opening and closing panel simultaneously covers the mounting port.

5. The range hood as described in claim 4, characterized in that, It also includes a sliding assembly slidably connected to the housing, the sliding assembly comprising: Two sliding grooves are provided on two opposite inner sidewalls of the housing, the sliding grooves being inclined downwards in a direction away from the mounting opening; and... A slider is slidably connected to the groove, and the flow guiding device is rotatably connected to the slider.

6. The range hood as described in claim 3, characterized in that, The upper end of the opening and closing panel is rotatably connected to the housing; The upper end of the flow guiding device is slidably connected to the opening and closing panel, and the lower end of the flow guiding device is rotatably connected to the housing; When the flow guiding device switches to the first state, the opening and closing panel simultaneously covers the mounting port.

7. The range hood as described in any one of claims 4 to 6, characterized in that, The driving component includes: Drive components; The telescopic rod is connected to the output end of the drive unit; and The connecting rod is rotatably connected at one end to the telescopic rod and at the other end to the opening / closing panel or the flow guide device.

8. The range hood as described in claim 7, characterized in that, The flow guiding device includes: The flow guide portion, wherein the flow guide cavity is formed in the flow guide portion; and Two mounting parts are located on the left and right sides of the flow guide and are rotatably connected to the housing and the opening and closing panel; The connecting rod passes between the two mounting parts and is located on the rear side of the guide part.

9. The range hood as described in claim 7, characterized in that, The opening and closing panel is provided with a first bracket, and the flow guiding device is provided with a second bracket. The first bracket is rotatably connected to the second bracket via a rotating shaft.

10. The range hood as described in claim 1, characterized in that, When the flow guiding device is in the second state, the opening of the flow guiding cavity is inclined downwards in a direction away from the box body.

11. The range hood as described in claim 2, characterized in that, Also includes: A control module is located in the housing and electrically connected to the drive assembly, used to control the operation of the drive assembly.

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