A range hood and its control method
The movable connection and drive structure between the front and rear shells of the smoke hood enables the extension, retraction, and lifting movements of the smoke hood, solving the problems of head bumping and poor smoke extraction in top-mounted range hoods, and providing a better user experience and smoke extraction effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GREE ELECTRIC APPLIANCE INC OF ZHUHAI
- Filing Date
- 2021-05-07
- Publication Date
- 2026-05-26
AI Technical Summary
Top-mounted range hoods are prone to causing head bumps during use and have poor smoke extraction efficiency. The long distance from the air inlet also results in weak anti-interference capabilities.
By movably connecting the front and rear shells of the smoke hood and allowing them to extend and retract, a portion of the smoke hood rises and falls longitudinally. Combined with a drive structure and guide unit, the extension, retraction, and lifting movements of the smoke hood are achieved. The control method ensures that the smoke hood returns to its initial state when shut down.
When in operation, it reduces space occupation, avoids head bumps, improves smoke extraction, enhances oil fume filtration, and remains neat, lightweight, and occupies little space when not in operation.
Smart Images
Figure CN113074397B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of kitchen appliance technology, specifically to a range hood and its control method. Background Technology
[0002] Range hoods have become an indispensable kitchen appliance in modern homes. Common range hoods include top-mounted and side-mounted types. Top-mounted range hoods are more widely used due to their neat appearance, compact design, and small footprint. However, compared to side-mounted range hoods, top-mounted range hoods have a longer air intake because the air inlet is further away from the cooktop. This means the fumes have to travel a longer distance to reach the fan, resulting in less resistance to interference and poorer fume extraction. Furthermore, to ensure adequate coverage, the side of a top-mounted range hood closer to the user often protrudes, making it easier for users to bump their heads and leading to a poor user experience. Summary of the Invention
[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the existing top-mounted range hoods that are easy to bump heads when using them, and thus provide a range hood that can prevent users from bumping their heads when using it.
[0004] To solve the above-mentioned technical problems, the present invention provides a range hood, comprising: a smoke collection hood rear shell;
[0005] The front shell of the smoke hood is horizontally disposed on the front side of the rear shell of the smoke hood and is movably connected to the rear shell of the smoke hood; and
[0006] The drive structure is adapted to directly or indirectly drive the front shell of the smoke hood to extend or retract relative to the rear shell of the smoke hood.
[0007] Optional, also includes:
[0008] The range hood body;
[0009] A smoke hood is at least partially disposed below the rear shell and / or the front shell of the smoke hood; and at least a portion of the smoke hood is adapted to move vertically upward and downward under the drive of the drive structure.
[0010] Optionally, the driving structure includes: an active lifting component, one end of which is directly or indirectly connected to the range hood body, and the other end of which is connected to the end of the smoke collection hood away from the front shell of the smoke collection hood. The active lifting component is adapted to drive the end of the smoke collection hood away from the front shell of the smoke collection hood to move up and down longitudinally.
[0011] Optionally, the end of the smoke hood near the front shell of the smoke hood is hinged to the front shell of the smoke hood; when the end of the smoke hood away from the front shell of the smoke hood moves up and down longitudinally, it simultaneously drives the front shell of the smoke hood to move telescopically relative to the rear shell of the smoke hood.
[0012] Optionally, the range hood further includes: a driven lifting component, which is arranged parallel to the active lifting component, with one end directly or indirectly connected to the range hood body and the other end connected to the smoke collection hood, and the driven lifting component is adapted to follow the movement of the active lifting component.
[0013] Optionally, it may also include: a drive unit, which is directly or indirectly connected to the active lifting member and adapted to drive the active lifting member to move.
[0014] Optionally, it also includes: an oil collection unit, located below the end of the smoke collection hood away from the front shell of the smoke collection hood.
[0015] Optionally, the oil collecting unit is rotatably connected to the end of the smoke collecting hood away from the front shell of the smoke collecting hood, and the lowest point of the inner surface of the oil collecting unit is always lower than the upper edge of the side of the oil collecting unit.
[0016] Optionally, the front shell of the smoke hood includes a covering portion, which is disposed at the junction of the rear shell and the front shell of the smoke hood and is adapted to cover the gap between the rear shell and the front shell of the smoke hood.
[0017] Optionally, it may also include: a guide unit, which is connected to the rear shell and the front shell of the smoke hood respectively, and is adapted to guide the front shell of the smoke hood to move relative to the rear shell of the smoke hood in a preset direction.
[0018] Optionally, the guide unit includes at least one of a slide rail, a slide groove, and a roller.
[0019] The present invention also provides a control method for a range hood, comprising:
[0020] When a shutdown signal is received from the range hood, the current configuration of the front shell and / or the smoke collection hood is obtained.
[0021] Determine whether the current shape is consistent with the initial shape of the front shell of the smoke hood;
[0022] When the current form is inconsistent with the initial form, adjust the front shell of the smoke hood to the initial form.
[0023] Optionally, before obtaining the current shape of the front shell of the smoke collection hood upon receiving a shutdown signal from the range hood, the following steps are included:
[0024] The operating status of the range hood is obtained; the operating status includes the state in which the smoke collection hood moves downward longitudinally or remains in its initial state;
[0025] Work is performed based on the aforementioned operating status.
[0026] Optionally, adjusting the front shell of the smoke collection hood to the initial shape includes:
[0027] The control drive structure is activated, which drives the smoke hood to move upward longitudinally, and the smoke hood simultaneously drives the front shell of the smoke hood to return to the initial state.
[0028] The technical solution of this invention has the following advantages:
[0029] 1. The range hood provided by the present invention, by movably connecting the front shell of the smoke collection hood to the rear shell of the smoke collection hood, and by allowing the front shell of the smoke collection hood to extend and retract relative to the rear shell of the smoke collection hood, reduces the space occupied by the range hood in the working state, leaving more operating space for the user and avoiding head bumps.
[0030] 2. The range hood provided by the present invention, by setting at least a portion of the smoke collection hood in a lifting manner, can lower the position of the air inlet during operation to improve the smoke extraction effect; and after operation, the smoke collection hood returns to the shape of a top-mounted range hood through its reset movement, ensuring that the range hood remains neat, lightweight, and occupies little space when not in operation.
[0031] 3. The range hood provided by the present invention allows the end of the smoke collection hood furthest from the front shell of the smoke collection hood to be raised and lowered along the height direction, thereby making the smoke collection hood tilted in the working state, lowering the air inlet, shortening the time for oil fumes to reach the oil filter, and at the same time, increasing the contact time between oil fumes and the oil filter and the condensation time of the smoke, thus enhancing the filtration effect of the smoke; and ensuring that the grease slides towards one side, avoiding the situation where grease drips directly into the pot during cooking, and facilitating the collection of grease.
[0032] 4. The range hood provided by the present invention converts the lifting motion of the end of the smoke collection hood away from the front shell of the smoke collection hood into the translational motion of the smoke collection hood. This allows the range hood to lower the height of the air inlet and improve the smoke extraction effect when it enters the working state, while also leaving operating space for the user and avoiding head bumping. When the range hood returns to its initial state, it can return to its original shape, ensuring that the whole machine is neat, lightweight and occupies little space.
[0033] 5. The control method for the range hood provided in this embodiment can, upon receiving a shutdown signal, first determine the current form and initial form of the front shell of the smoke collection hood, and adjust the front shell of the smoke collection hood to the initial form when the current form is inconsistent with the initial form, thereby ensuring that the range hood maintains its aesthetic appearance after shutdown and preventing the front shell of the smoke collection hood from being in a retracted state for a long time. Attached Figure Description
[0034] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0035] Figure 1 This is a schematic diagram of the initial state of the range hood of the present invention. Figure 1 ;
[0036] Figure 2 This is a schematic diagram of the initial state of the range hood of the present invention. Figure 2 ;
[0037] Figure 3 This is an exploded view of the range hood of the present invention;
[0038] Figure 4 for Figure 3 Enlarged view of point A in the middle;
[0039] Figure 5 This is a schematic diagram of the working state of the range hood of the present invention. Figure 1 ;
[0040] Figure 6 This is a schematic diagram of the working state of the range hood of the present invention. Figure 2 ;
[0041] Figure 7 for Figure 6 Enlarged view at point B in the middle;
[0042] Figure 8 This is a cross-sectional schematic diagram of the range hood of the present invention in its initial state;
[0043] Figure 9 This is a cross-sectional schematic diagram of the range hood of the present invention in its working state;
[0044] Figure 10 for Figure 9 Enlarged view at point C;
[0045] Figure 11 This is a cross-sectional schematic diagram of a partial structure of the range hood of the present invention.
[0046] Explanation of reference numerals in the attached figures:
[0047] 1-Range hood body, 2-Front shell of smoke collection hood, 21-Covering part, 22-Guide unit, 23-Connector, 24-Front shell hinge part, 3-Rear shell of smoke collection hood, 4-Oil collection unit, 41-Oil collection unit hinge part, 5-Smoke collection hood, 51-First hinge, 52-Second hinge, 6-Driven lifting part, 7-Active lifting part, 8-Drive unit. Detailed Implementation
[0048] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0049] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for 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, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0050] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0051] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0052] Example 1
[0053] Combination Figures 1-11 As shown, the range hood provided in this embodiment includes:
[0054] 3. Rear shell of the smoke hood;
[0055] The front shell 2 of the smoke hood is horizontally disposed on the front side of the rear shell 3 of the smoke hood and is movably connected to the rear shell 3 of the smoke hood; and
[0056] The drive structure is adapted to directly or indirectly drive the front shell 2 of the smoke hood to extend and retract relative to the rear shell 3 of the smoke hood.
[0057] Preferably, the rear shell 3 of the smoke hood is fixed, while the front shell 2 of the smoke hood moves horizontally back and forth relative to the rear shell 3.
[0058] The front shell 2 of the smoke hood has an initial state and a working state. In the initial state, the front shell 2 of the smoke hood and the rear shell 3 of the smoke hood remain stationary at a preset position. When the front shell 2 of the smoke hood enters the working state from the initial state, the front shell 2 of the smoke hood retracts relative to the rear shell 3 in the front-back direction. When the front shell 2 of the smoke hood enters the initial state from the working state, the front shell 2 of the smoke hood extends relative to the rear shell 3 in the front-back direction.
[0059] Preferably, in this embodiment, the driving structure indirectly drives the front shell 2 of the smoke hood to extend and retract relative to the rear shell 3 of the smoke hood through other intermediate structures.
[0060] The range hood provided in this embodiment movably connects the front shell 2 of the smoke collection hood to the rear shell 3 of the smoke collection hood, and allows the front shell 2 of the smoke collection hood to extend and retract relative to the rear shell 3 of the smoke collection hood. This reduces the space occupied by the range hood when it is in operation, leaving more operating space for the user and avoiding head bumps.
[0061] Specifically, in combination Figure 2 , Figure 3 As shown, the range hood also includes:
[0062] Range hood body 1;
[0063] The smoke hood 5 is at least partially disposed below the rear shell 3 and / or the front shell 2 of the smoke hood; and at least a portion of the smoke hood 5 is adapted to move vertically in the longitudinal direction under the drive of the drive structure.
[0064] The range hood provided in this embodiment sets at least a portion of the smoke collection hood 5 into a lifting form, thereby lowering the position of the air inlet during operation to improve the smoke extraction effect; and after operation, the smoke collection hood returns to the shape of a top-mounted range hood through its reset movement, ensuring that the range hood remains neat, lightweight, and occupies little space when not in operation.
[0065] Preferably, the rear shell 3 of the smoke collection hood is fixedly or movably connected to the main body 1 of the range hood.
[0066] Specifically, in combination Figure 5 As shown, the driving structure includes an active lifting component 7, one end of which is directly or indirectly connected to the range hood body (1), and the other end is connected to the end of the smoke collection hood 5 away from the front shell 2 of the smoke collection hood, and is adapted to drive the end of the smoke collection hood 5 away from the front shell 2 of the smoke collection hood to move up and down longitudinally.
[0067] The range hood provided in this embodiment raises and lowers the end of the smoke collection hood 5 away from the front shell 2 along the height direction, so that the smoke collection hood 5 is set in an inclined state when working, which lowers the air inlet and shortens the time for oil fumes to reach the oil filter. At the same time, it increases the contact time between oil fumes and the oil filter and the condensation time of the smoke, thereby enhancing the filtration effect of the smoke. It also ensures that the grease slides to one side, avoiding the situation where grease drips directly into the pot during cooking, and making it easier to collect the grease.
[0068] Existing top-mounted range hoods have a long air inlet distance, poor anti-interference ability, and poor smoke extraction effect. By moving the smoke collection hood 5 and lowering its height, the air inlet can be reduced, thereby improving the smoke extraction effect.
[0069] Preferably, the active lifting component 7 can be a lead screw structure or a traction rope structure.
[0070] Specifically, the end of the smoke hood 5 closest to the front shell 2 of the smoke hood is hinged to the front shell 2 of the smoke hood; when the end of the smoke hood 5 away from the front shell 2 of the smoke hood moves up and down longitudinally, it simultaneously drives the front shell 2 of the smoke hood to move in extension and retraction relative to the rear shell 3 of the smoke hood.
[0071] Combination Figure 4 , Figure 7 As shown, a first hinge 51 is provided at one end of the smoke hood 5 near the front shell 2 of the smoke hood. Correspondingly, a front shell hinge portion 24 is provided on the front shell 2 of the smoke hood, which is hinged to the first hinge 51. This ensures that when the smoke hood 5 rotates, it can maintain both its connection with the front shell 2 of the smoke hood and the relative rotation between the smoke hood 5 and the front shell 2. As a variation, the first hinge 51 and the front shell hinge portion 24 can also be constructed as a hinge.
[0072] The range hood provided in this embodiment converts the lifting motion of the end of the smoke collection hood 5 away from the front shell 2 of the smoke collection hood into the translational motion of the smoke collection hood. This allows the range hood to lower the height of the air inlet and improve the smoke extraction effect when it enters the working state, while also leaving operating space for the user and avoiding head bumps. When the range hood returns to its initial state, it can return to its original shape, ensuring that the whole machine is neat, lightweight, and occupies little space.
[0073] The range hood provided in this embodiment changes the traditional fixed setting of the smoke collection hood unit in top-mounted range hoods. Instead, it breaks down the smoke collection hood unit into multiple parts, which are connected by a transmission structure, allowing the smoke collection hood 5 to rotate relative to the front shell 2. This combines the advantages of both top-mounted and side-mounted range hoods, cleverly integrating the movement states of the smoke collection hood 5 and the front shell 2. When the range hood enters the working state, it lowers the height of the air inlet, improves the smoke extraction effect, and provides operating space for the user, avoiding head bumps. Furthermore, when the range hood returns to its initial state, it can return to its original shape, ensuring a neat, lightweight design and minimal space occupation.
[0074] Specifically, in combination Figure 5 As shown, the range hood also includes a driven lifting member 6, which is arranged parallel to the active lifting member 7. One end is directly or indirectly connected to the range hood body 1, and the other end is connected to the smoke collection hood 5. The driven lifting member 6 is adapted to follow the movement of the active lifting member 7.
[0075] Preferably, the driven lifting member 6 and the active lifting member 7 can have the same structure, or one of the driven lifting member 6 and the active lifting member 7 can be a lead screw structure and the other can be a traction rope structure. The driven lifting member 6 and the active lifting member 7 are respectively connected to the opposite ends of the smoke hood 5 along its length, thereby making the smoke hood 5 rise and fall evenly on both sides.
[0076] Specifically, in combination Figure 8 As shown, the range hood further includes a drive unit 8, which is directly or indirectly connected to the active lifting member 7 and is adapted to drive the active lifting member 7 to move.
[0077] Preferably, in this embodiment, the drive unit 8 can be a motor, which can drive the lead screw to lift or drive the traction rope to wind.
[0078] In this embodiment, after the range hood is started, the drive unit 8 moves the active lifting component 7, causing the end of the smoke collection hood 5 away from the front shell 2 to move downwards. The smoke collection hood 5 changes from a horizontal to an inclined state, lowering the position of the air inlet and improving the smoke extraction effect. The smoke is in contact with the inclined smoke collection hood 5 for a longer period, which increases the contact time between the smoke and the oil filter and the condensation time of the smoke, enhancing the filtration effect. Furthermore, the movement of the smoke collection hood 5 causes the front shell 2 to retract backwards, providing more space for the user and solving the problem of bumping one's head on top-mounted range hoods. Through these coordinated actions, a dual effect is achieved.
[0079] Specifically, the range hood further includes an oil collection unit 4, which is located below the end of the smoke collection hood 5 away from the front shell 2 of the smoke collection hood.
[0080] Preferably, the specific structural form of the oil collecting unit 4 may include an oil cup, an oil tank, an oil pipe, etc.
[0081] Preferably, the active lifting component 7 is fixedly connected to the oil collecting unit 4, so that the active lifting component 7 drives the oil collecting unit 4 to move up and down in the vertical direction, thereby ensuring that the angle between the oil collecting unit 4 and the horizontal plane is always in a state where oil can be collected.
[0082] Specifically, the smoke hood 5 and the oil collection unit 4 are rotatably connected to one end of the smoke hood 5 away from the front shell 2 of the smoke hood, and the lowest point of the inner surface of the oil collection unit 4 is always lower than the upper edge of the side of the oil collection unit 4.
[0083] Combination Figure 9 , Figure 10 , Figure 11 As shown, a second hinge 52 is provided at one end of the smoke hood 5 near the oil collection unit 4. Correspondingly, the oil collection unit 4 is provided with an oil collection unit hinge portion 41 that is hinged to the second hinge 52. This ensures that when the smoke hood 5 rotates, it can maintain both its connection to the oil collection unit 4 and its relative rotation with the oil collection unit 4. As a variation, the second hinge 52 and the oil collection unit hinge portion 41 can also be constructed as a hinge.
[0084] One end of the smoke hood 5 is hinged to the oil collection unit 4, and the other end is hinged to the front shell 2 of the smoke hood. Since the size of the smoke hood 5 does not change with the movement state, the vertical up-and-down movement of the end of the smoke hood 5 near the oil collection unit 4 is transformed into the horizontal back-and-forth movement of the end of the smoke hood 5 near the front shell 2 of the smoke hood, thereby driving the front shell 2 of the smoke hood to retract back and forth, achieving the effect of linkage movement.
[0085] Specifically, the front shell 2 of the smoke collection hood includes a covering part 21, which is disposed at the junction of the rear shell 3 of the smoke collection hood and the front shell 2 of the smoke collection hood, and is adapted to cover the gap between the rear shell 3 of the smoke collection hood and the front shell 2 of the smoke collection hood.
[0086] Preferably, the covering part 21 can be a plate-like structure disposed on the front shell 2 and / or the rear shell 3 of the smoke collection hood, or it can be a flexible sleeve, a flexible connector, etc.
[0087] In this embodiment, the covering part 21 is constructed as a plate-like structure extending from the front shell 2 of the smoke hood toward the rear shell 3 of the smoke hood. The covering part 21 is at least partially disposed above or below the rear shell 3 of the smoke hood, and is adapted to prevent gaps from forming between the rear shell 3 of the smoke hood and the front shell 2 of the smoke hood when the front shell 2 of the smoke hood moves relative to the rear shell 3 of the smoke hood, thereby reducing the occurrence of air leakage.
[0088] Preferably, the covering part 21 is arranged to overlap with the upper or lower surface of the smoke collection hood rear shell 3.
[0089] As a variation, the covering part 21 can also be configured as a flexible telescopic structure, which is suitable for covering the gap between the rear shell 3 and the front shell 2 of the smoke hood when the front shell 2 of the smoke hood moves relative to the rear shell 3 of the smoke hood.
[0090] In some embodiments, the covering part 21 is disposed at the upper connection between the rear shell 3 of the smoke hood and the front shell 2 of the smoke hood. Preferably, in this embodiment, the covering part 21 can be disposed at the upper and left and right connection between the rear shell 3 of the smoke hood and the front shell 2 of the smoke hood, thereby ensuring the shielding effect and preventing air leakage.
[0091] Specifically, in combination Figure 11 As shown, the range hood further includes a guide unit 22, which is adapted to directly or indirectly connect the rear shell 3 of the smoke collection hood and the front shell 2 of the smoke collection hood, and is adapted to guide the front shell 2 of the smoke collection hood to move relative to the rear shell 3 of the smoke collection hood in a preset direction.
[0092] Preferably, the front shell 2 of the smoke collection hood is provided with a connector 23 suitable for fixing to the guide unit 22.
[0093] The guide unit 22 includes at least one of a slide rail, a slide groove, and a roller.
[0094] The range hood also includes a decorative cover, which is positioned above the rear shell 3 of the smoke collection hood and / or the front shell 2 of the smoke collection hood.
[0095] Example 2
[0096] This embodiment provides a control method for a range hood, including:
[0097] When a shutdown signal is received from the range hood, the current configuration of the front shell and / or the smoke collection hood is obtained.
[0098] Determine whether the current shape is consistent with the initial shape of the front shell of the smoke hood;
[0099] When the current form is inconsistent with the initial form, adjust the front shell of the smoke hood to the initial form.
[0100] As a variation, when a shutdown signal is received from the range hood, the current shape of the smoke collection hood can be obtained; it can be determined whether the current shape of the smoke collection hood is consistent with the initial shape of the smoke collection hood; if the current shape is inconsistent with the initial shape, the smoke collection hood can be adjusted to the initial shape.
[0101] As a secondary problem arising from the extension of the front shell of the smoke hood, in order to ensure that the front shell of the smoke hood can return to its initial shape when the range hood is turned off, the control method of the range hood provided in this embodiment can first judge the current shape and the initial shape of the front shell of the smoke hood after receiving the shutdown signal, and adjust the front shell of the smoke hood to the initial shape when the current shape is inconsistent with the initial shape, thereby ensuring that the range hood can maintain its appearance after being turned off and avoiding the front shell of the smoke hood being in a retracted state for a long time.
[0102] Specifically, before obtaining the current shape of the front shell of the smoke collection hood upon receiving a shutdown signal from the range hood, the process includes:
[0103] The operating status of the range hood is obtained; the operating status includes the state in which the smoke collection hood moves downward longitudinally or remains in its initial state;
[0104] Work is performed based on the aforementioned operating status.
[0105] Specifically, adjusting the front shell of the smoke collection hood to the initial shape includes:
[0106] The control drive structure is activated, which drives the smoke hood to move upward longitudinally, and the smoke hood simultaneously drives the front shell of the smoke hood to return to the initial state.
[0107] The operating status of the range hood is obtained; the operating status includes the state in which the smoke collection hood moves downward longitudinally or remains in the initial state; when the operating status of the range hood is the state in which the smoke collection hood moves downward longitudinally, the drive unit 8 is activated to drive the movement of each component, so as to realize the downward movement of the smoke collection hood and the retraction of the front shell of the smoke collection hood, thereby switching the operating status of the range hood from the initial state to the state in which the smoke collection hood moves downward longitudinally; when the operating status of the range hood is the initial state, after the range hood is started, the drive unit 8 is not activated, so that the range hood can be used as a normal top-mounted range hood, which is convenient to avoid interference with the inner cavity of the smoke collection hood when using tall cookware.
[0108] When a shutdown signal is received from the range hood, the current shape of the front shell or the smoke collection hood is obtained; it is then determined whether the current shape is consistent with the initial shape of the front shell or the smoke collection hood.
[0109] When the current form is inconsistent with the initial form, adjust the front shell of the smoke hood or the smoke hood to the initial form; realize the upward movement of the smoke hood and the forward extension of the front shell of the smoke hood, and then turn off the machine.
[0110] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.
Claims
1. A range hood, characterized in that, include: Range hood body (1); The rear shell of the smoke collection hood (3); The front shell (2) of the smoke hood is arranged horizontally on the front side of the rear shell (3) of the smoke hood and is movably connected to the rear shell (3) of the smoke hood; as well as The drive structure is suitable for directly or indirectly driving the front shell (2) of the smoke hood to extend and retract relative to the rear shell (3); A smoke hood (5) is at least partially disposed below the rear shell (3) and / or the front shell (2) of the smoke hood; and at least a portion of the smoke hood (5) is adapted to move vertically along the longitudinal direction under the drive of the drive structure. The end of the smoke hood (5) near the front shell (2) of the smoke hood is hinged to the front shell (2); when the end of the smoke hood (5) away from the front shell (2) moves up and down longitudinally, it simultaneously drives the front shell (2) of the smoke hood to move in extension and retraction relative to the rear shell (3) of the smoke hood.
2. The range hood according to claim 1, characterized in that, The driving structure includes an active lifting component (7), one end of which is directly or indirectly connected to the range hood body (1), and the other end is connected to the end of the smoke hood (5) away from the front shell (2). The active lifting component (7) is adapted to drive the end of the smoke hood (5) away from the front shell (2) to move vertically.
3. The range hood according to claim 2, characterized in that, The range hood also includes a driven lifting member (6), which is arranged parallel to the active lifting member (7). One end is directly or indirectly connected to the range hood body (1), and the other end is connected to the smoke collection hood (5). The driven lifting member (6) is adapted to follow the movement of the active lifting member (7).
4. The range hood according to claim 2, characterized in that, Also includes: The drive unit (8) is directly or indirectly connected to the active lifting member (7) and is adapted to drive the active lifting member (7) to move.
5. The range hood according to any one of claims 1-4, characterized in that, Also includes: The oil collection unit (4) is located below the end of the smoke collection hood (5) away from the front shell (2) of the smoke collection hood.
6. The range hood according to claim 5, characterized in that, The oil collecting unit (4) is rotatably connected to the end of the smoke collecting hood (5) away from the front shell (2) of the smoke collecting hood, and the lowest point of the inner surface of the oil collecting unit (4) is always lower than the upper edge of the side of the oil collecting unit (4).
7. The range hood according to any one of claims 1-4, characterized in that, The front shell (2) of the smoke hood includes a covering part (21), which is disposed at the junction of the rear shell (3) of the smoke hood and the front shell (2) of the smoke hood, and is adapted to cover the gap between the rear shell (3) of the smoke hood and the front shell (2) of the smoke hood.
8. The range hood according to any one of claims 1-4, characterized in that, Also includes: The guide unit (22) is connected to the rear shell (3) and the front shell (2) of the smoke hood, respectively, and is adapted to guide the front shell (2) of the smoke hood to move relative to the rear shell (3) of the smoke hood in a preset direction.
9. The range hood according to claim 8, characterized in that, The guide unit (22) includes at least one of a slide rail, a slide groove, and a roller.
10. A control method for a range hood, characterized in that, Applied to any one of claims 1 to 9, the method comprises: When a shutdown signal is received from the range hood, the current state of the front shell and / or the smoke collection hood is obtained. Determine whether the current shape is consistent with the initial shape of the front shell of the smoke hood; When the current form is inconsistent with the initial form, adjust the front shell of the smoke hood to the initial form.
11. The control method for a range hood according to claim 10, characterized in that, Before obtaining the current shape of the front shell of the smoke collection hood when the range hood is received as a shutdown signal, the process includes: The operating status of the range hood is obtained; the operating status includes the state in which the smoke collection hood moves downward longitudinally or remains in its initial state; Work is performed based on the aforementioned operating status.
12. The control method for a range hood according to claim 11, characterized in that, Adjusting the front shell of the smoke hood to the initial shape includes: The control drive structure is activated, which drives the smoke hood to move upward longitudinally, and the smoke hood simultaneously drives the front shell of the smoke hood to return to the initial state.