Range hood and control method thereof

Abstract

The present invention relates to a range hood and a control method thereof. The range hood includes a fume suction body, a smoke guide plate, a control unit and a driving member. A first detection member is arranged on the surface of the smoke guide plate facing the air inlet, and a second detection member is arranged on the surface of the smoke guide plate facing away from the air inlet. If the user is of low height, the first detection member can detect the user, but the second detection member cannot detect the user. The controller obtains a first detection signal from the first detection member and controls the driving member to drive the smoke guide plate to move in a direction away from the air inlet, so as to keep the smoke guide plate away from the user. If the user is of high height, the second detection member can detect the user. The controller obtains a second detection signal from the second detection member and controls the driving member to drive the smoke guide plate to move in a direction close to the air inlet. The above-mentioned range hood is suitable for users of different heights, and can prevent users of different heights from hitting the smoke guide plate with their heads during use, thereby improving the safety of use.

Description

Technical Field

[0001] The present invention relates to the technical field of range hoods, and in particular to a range hood and a control method thereof. Background Art

[0002] Range hoods have become one of the indispensable kitchen appliances in modern families. Range hoods can quickly remove the fumes generated during cooking, reduce pollution, purify the air, and ensure safety during cooking. However, traditional range hoods generally open the smoke guide plate during the process of extracting fumes, which causes the smoke guide plate to bulge outward. When users are cooking, it is easy for them to touch the smoke guide plate, causing harm to the users. Summary of the invention

[0003] In view of the problem that users are prone to bumping into a smoke guide plate, causing harm to the users, the present invention proposes a range hood and a control method thereof, which can effectively prevent users from bumping into the smoke guide plate and improve the safety of use.

[0004] A range hood, the range hood comprising a range hood main body, a smoke guide plate, a control unit and a driving member, the range hood main body being provided with an air inlet; the smoke guide plate being movably arranged on a side of the range hood main body provided with the air inlet, and the smoke guide plate being capable of covering the air inlet; the control unit comprising a controller, a first detection member and a second detection member, the first detection member being arranged on a surface of the smoke guide plate facing the air inlet, and the second detection member being arranged on a surface of the smoke guide plate facing away from the air inlet; the first detection member and the second detection member being electrically connected to the controller; the driving member being electrically connected to the controller, and the controller being used to control the driving member to drive the smoke guide plate to move relative to the range hood main body according to detection signals of the first detection member and the second detection member.

[0005] In one embodiment, one end of the smoke guide plate is a connecting end, and the connecting end can be movably arranged on the oil smoke absorbing body, and the end of the smoke guide plate away from the connecting end is a movable end, and the first detection component and the second detection component are both arranged on the movable end.

[0006] In one embodiment, the angle b1 between the detection direction of the first detection member and the direction from the connection end of the smoke guide plate toward the movable end is 0° to 90°; and / or

[0007] An included angle b2 between a detection direction of the second detection member and a direction of the connecting end of the smoke guide plate toward the movable end is in a range of 0° to 90°.

[0008] In one embodiment, the range hood further includes a sensing element, which is arranged on the surface of the smoke guide plate facing the air inlet, and is used to sense the distance between the smoke guide plate and a sensing object, and an angle c between a sensing direction of the sensing element and a direction of the connecting end of the smoke guide plate toward the movable end is greater than an angle b1 between a detection direction of the first detection element and a direction of the connecting end of the smoke guide plate toward the movable end, and the sensing element is electrically connected to the controller.

[0009] In one embodiment, the range hood further includes a warning member, which is disposed on the range hood body or the smoke guide plate, and is electrically connected to the controller, and the controller is used to control the operation of the warning member according to the sensing signal of the sensing member.

[0010] In one embodiment, the number of the first detection members is at least two, different first detection members are electrically connected in parallel, and different first detection members are arranged at intervals on the surface of the smoke guide plate facing the air inlet; and / or

[0011] The number of the second detection members is at least two, different second detection members are electrically connected in parallel, and different second detection members are arranged at intervals on the surface of the smoke guide plate facing away from the air inlet.

[0012] In one embodiment, the first detection element is an infrared sensor or an image detection element; and / or

[0013] The second detection element is an infrared sensor and an image detection element.

[0014] In one embodiment, the driving member is used to drive the smoke guide plate to rotate relative to the oil smoke absorbing body; or

[0015] The driving member is used for driving the smoke guide plate to move up and down relative to the oil smoke absorbing body.

[0016] In one embodiment, if the driving member is used to drive the smoke guide plate to rotate relative to the oil smoke suction body, the driving member includes a driving source and a crank, the driving source is arranged on the oil smoke suction body, one end of the crank is rotatably connected to the driving source, and the other end of the crank is arranged on the smoke guide plate, and the driving source pushes the crank to drive the smoke guide plate to rotate; or

[0017] If the driving member is used to drive the smoke guide plate to move up and down relative to the oil fume suction body, the driving member includes a driving source and a moving member, the smoke guide plate is set on the oil fume suction body through the moving member, and the driving source is used to drive the moving member to drive the smoke guide plate to move relative to the oil fume suction body.

[0018] In one embodiment, the smoke guide plate is an electrochromic plate, the electrochromic plate is electrically connected to the controller, and the controller is used to control the electrochromic plate to change color according to the detection signal of the second detection element; or

[0019] The smoke guide plate is a transparent plate.

[0020] In one of the embodiments, an angle detection component is further provided on the smoke guide plate or the oil smoke suction body, and the angle detection component is used to sense the opening and closing angle of the smoke guide plate and the plane where the air inlet is located, and the angle detection component is electrically connected to the controller.

[0021] A control method for a range hood, the range hood comprising a range hood body, a smoke guide plate, a driving member and a control unit, the range hood body being provided with an air inlet, the smoke guide plate being movably arranged on a side of the range hood body provided with the air inlet, and the smoke guide plate being capable of covering the air inlet; the control unit comprising a first detection member and a second detection member, the first detection member being arranged on a surface of the smoke guide plate facing the air inlet, and the second detection member being arranged on a surface of the smoke guide plate facing away from the air inlet;

[0022] The control method comprises the following steps:

[0023] Acquire a first detection signal of the first detection element and a second detection signal of the second detection element;

[0024] If the second detection signal is obtained, the driving member is controlled to drive the smoke guide plate to move toward the air inlet of the oil smoke suction body;

[0025] If the second detection signal is not obtained, and the first detection signal is obtained, the driving member is controlled to drive the smoke guide plate to move in a direction away from the air inlet of the oil smoke suction body.

[0026] In one embodiment, if the second detection signal is obtained, after the step of controlling the driving member to drive the smoke guide plate to move toward the air inlet of the oil smoke suction body, the step further includes:

[0027] The smoke guide plate is controlled to change color to a transparent color, and the smoke guide plate is an electrochromic plate.

[0028] In one embodiment, if the second detection signal is obtained, after the step of controlling the driving member to drive the smoke guide plate to move toward the air inlet of the oil smoke suction body, the method further includes:

[0029] Acquiring a sensing signal from a sensing element;

[0030] If the sensing signal is less than a preset value, the warning element is controlled to be activated, and / or the smoke guide plate is controlled to be displayed in a non-transparent color.

[0031] In one embodiment, if the detection signal of the second detection element is obtained, the step of controlling the driving element to drive the smoke guide plate to move toward the air inlet of the oil smoke suction body includes:

[0032] If a second detection signal of the second detection element is obtained, the second detection signal is a distance value between the second detection element and the user;

[0033] If the second detection signal is smaller than the anti-collision distance, the driving member is controlled to drive the smoke guide plate to move toward the air inlet, so that the second detection signal is greater than or equal to the anti-collision distance.

[0034] In one embodiment, if the second detection signal is not obtained and the first detection signal is obtained, the step of controlling the driving member to drive the smoke guide plate to move in a direction away from the air inlet of the oil smoke suction body includes:

[0035] If a first detection signal of the first detection element is obtained, the first detection signal is a distance value between the first detection element and the user;

[0036] If the first detection signal is smaller than the anti-collision distance, the driving member is controlled to drive the smoke guide plate to move toward the air inlet, so that the first detection signal is greater than or equal to the anti-collision distance.

[0037] In one embodiment, the anti-collision distance is 5 mm to 30 mm.

[0038] In one embodiment, the step of obtaining the first detection signal of the first detection element and the second detection signal of the second detection element includes:

[0039] The smoke guide plate is controlled to rotate relative to the oil smoke absorption body so that the angle between the smoke guide plate and the plane where the air inlet is located is a first angle.

[0040] In one embodiment, the first angle is 60° to 100°.

[0041] In one embodiment, the control method further includes:

[0042] The smoke guide plate is driven to rotate relative to the oil fume suction body so that the angle between the smoke guide plate and the plane where the air inlet is located is a second angle, and the oil fume suction body is controlled to stop running.

[0043] In one embodiment, the second angle is 10° to 30°.

[0044] The range hood and control method thereof start the range hood main body, and the driving member drives the smoke guide plate to release the cover on the air inlet, so that the smoke can be effectively discharged through the air inlet. Since the first detection member is arranged on the surface of the smoke guide plate facing the air inlet, and the second detection member is arranged on the surface of the smoke guide plate facing away from the air inlet. When the user stands in front of the range hood main body, if the user is of low height, the first detection member can detect the user, and the second detection member cannot detect the user. Then, when the controller does not obtain the second detection signal of the second detection member, but obtains the first detection signal of the first detection member, the driving member is controlled to drive the smoke guide plate to move in the direction away from the air inlet of the range hood main body, so that the smoke guide plate moves in the direction away from the user, reducing the possibility of the user hitting his head during use. If the user is of high height, the second detection member can detect the user, and then when the controller obtains the second detection signal of the second detection member, the driving member is controlled to drive the smoke guide plate to move in the direction close to the air inlet of the range hood main body, so that the smoke guide plate moves in the direction away from the user's head, reducing the possibility of the user hitting his head during use. The range hood is suitable for users of different heights and can prevent the heads of users of different heights from hitting the smoke guide plate during use, thereby improving safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0047] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are drawn only as examples in the drawings and are not necessarily drawn according to the true scale.

[0048] Figure 1 is a schematic structural diagram of a range hood in one embodiment;

[0049] Figure 2 for Figure 1 A side view of the range hood shown;

[0050] Figure 3 for Figure 2 Schematic diagram of the partial structure of the middle smoke guide plate;

[0051] Figure 4 for Figure 1 The structural schematic diagram of the range hood shown in FIG. 1 is in use;

[0052] Figure 5 4 is a flow chart of a control method of a range hood in one embodiment.

[0053] Description of reference numerals:

[0054] 10. Range hood, 100. Range hood body, 110. Air inlet, 200. Smoke guide plate, 210. Connecting end, 220. Movable end, 300. Driving member, 310. Driving source, 320. Crank, 410. First detecting member, 420. Second detecting member, 500. Warning member, 600. Induction member. DETAILED DESCRIPTION

[0055] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0056] See also Figure 1 and Figure 2 The range hood 10 in one embodiment is used to extract oil smoke and improve the safety during cooking. Specifically, the range hood 10 includes an oil smoke suction body 100, a smoke guide plate 200, a control unit and a driving member 300.

[0057] The oil fume suction body 100 is provided with an air inlet 110; the smoke guide plate 200 is movably arranged on the side of the oil fume suction body 100 where the air inlet 110 is provided, and the smoke guide plate 200 can be covered at the air inlet 110. The control unit includes a controller, a first detection member 410 and a second detection member 420, wherein the first detection member 410 is arranged on the surface of the smoke guide plate 200 facing the air inlet 110, and the second detection member 420 is arranged on the surface of the smoke guide plate 200 facing away from the air inlet 110; the first detection member 410 and the second detection member 420 are both electrically connected to the controller. The driving member 300 is electrically connected to the controller, and the controller is used to control the driving member 300 to drive the smoke guide plate 200 to move relative to the oil fume suction body 100 according to the detection signals of the first detection member 410 and the second detection member 420.

[0058] See also Figure 4When the range hood 10 is in use, the range hood main body 100 is started, and the driving member 300 drives the smoke guide plate 200 to release the cover of the air inlet 110, so that the smoke can be effectively discharged through the air inlet 110. Since the first detection member 410 is arranged on the surface of the smoke guide plate 200 facing the air inlet 110, and the second detection member 420 is arranged on the surface of the smoke guide plate 200 facing away from the air inlet 110. When a user stands in front of the range hood main body 100, if the user is short, the first detection member 410 can detect the user, but the second detection member 420 cannot detect the user. Then, when the controller does not obtain the second detection signal of the second detection member 420, but obtains the first detection signal of the first detection member 410, the driving member 300 is controlled to drive the smoke guide plate 200 to move in a direction away from the air inlet 110 of the range hood main body 100, so that the smoke guide plate 200 moves in a direction away from the user, thereby reducing the possibility of the user hitting his head during use. If the user is tall, the second detection member 420 can detect the user, and when the controller obtains the second detection signal of the second detection member 420, the driving member 300 is controlled to drive the smoke guide plate 200 to move toward the air inlet 110 of the range hood body 100, so that the smoke guide plate 200 moves away from the user's head, reducing the possibility of the user hitting his head during use. The range hood 10 is suitable for users of different heights, and can prevent users of different heights from hitting the smoke guide plate 200 during use, thereby improving the safety of use.

[0059] In one embodiment, one end of the smoke guide plate 200 is a connecting end 210, and the connecting end 210 is movably disposed on the oil smoke absorbing body 100. One end of the smoke guide plate 200 away from the connecting end 210 is a movable end 220, and the first detection member 410 and the second detection member 420 are both disposed on the movable end 220. Specifically, the first detection member 410 and the second detection member 420 are both disposed at a position of the movable end 220 away from the connecting end 210.

[0060] When the user is in use, the smoke guide plate 200 moves relative to the oil smoke absorbing body 100, so that the movable end 220 is away from the air inlet 110, which makes it easy for the user to collide with the movable end 220. By arranging the first detection member 410 and the second detection member 420 at a position where the movable end 220 is away from the connecting end 210, the first detection member 410 and the second detection member 420 can detect the user easily, and avoid the user from hitting the movable end 220.

[0061] Specifically, the first detecting member 410 is disposed on the surface of the movable end 220 facing the air inlet 110 , and the second detecting member 420 is disposed on the surface of the movable end 220 facing away from the air inlet 110 .

[0062] In one embodiment, the number of the first detection members 410 is at least two, different first detection members 410 are electrically connected in parallel, and different first detection members 410 are arranged at intervals on the surface of the smoke guide plate 200 facing the air inlet 110. Specifically, different first detection members 410 are arranged on the surface of the movable end 220 facing the air inlet 110, and are located at a position away from the connection end 210. By providing at least two first detection members 410, as long as one of the first detection members 410 can detect the user, the first detection signal can be fed back to the controller, and the user can be detected more accurately and stably.

[0063] In this embodiment, there are three first detection members 410, and the three first detection members 410 are arranged at intervals on the surface of the movable end 220 facing the air inlet 110. The stability of the first detection member 410 detecting the user is further improved by providing three first detection members 410. In other embodiments, the first detection member 410 can also be two, four, or other numbers, as long as the purpose of detecting the user can be achieved. In another embodiment, the first detection member 410 can also be one, and the user is detected by one first detection member 410.

[0064] In one embodiment, the first detection member 410 is an infrared sensor, and the position of the user is detected by the infrared sensor. In another embodiment, the first detection member 410 may also be an image detection member, such as a camera, etc., which determines the position of the user by collecting an image of the user. In other embodiments, the first detection member 410 may also be other detection devices that can detect the user.

[0065] In one embodiment, the number of the second detection members 420 is at least two, different second detection members 420 are electrically connected in parallel, and different second detection members 420 are arranged at intervals on the surface of the smoke guide plate 200 facing away from the air inlet 110. Specifically, different second detection members 420 are arranged on the surface of the movable end 220 facing away from the air inlet 110, and are located at a position away from the connection end 210. By providing at least two second detection members 420, as long as one of the second detection members 420 can detect the user, the second detection signal can be fed back to the controller, and the user can be detected more accurately and stably.

[0066] In this embodiment, there are three second detection members 420, and the three second detection members 420 are arranged at intervals on the surface of the movable end 220 facing away from the air inlet 110. The stability of the second detection member 420 detecting the user can be further improved by providing three second detection members 420. In other embodiments, the second detection member 420 can also be two, four, or other numbers, as long as it is convenient to detect the user. In another embodiment, the second detection member 420 can also be one, and the user is detected by one second detection member 420.

[0067] In one embodiment, the second detection member 420 is an infrared sensor, and the position of the user is detected by the infrared sensor. In another embodiment, the second detection member 420 may also be an image detection member, such as a camera, etc., which determines the position of the user by collecting an image of the user. In other embodiments, the second detection member 420 may also be other detection devices capable of detecting the user.

[0068] Please also read Figure 2 and Figure 3 In one embodiment, the angle b1 between the detection direction of the first detection member 410 and the direction from the connection end 210 of the smoke guide plate 200 toward the movable end 220 is 0° to 90°. When the user enters the detection range of the first detection member 410, the user can be detected.

[0069] Specifically, the detection range of the first detection member 410 can be 0° to 90°, with the position where the connection end 210 is facing the movable end 220 being 0°. 0° is the angle between the minimum detection direction of the first detection member 410 and the direction of the connection end 210 facing the movable end 220, and 90° is the angle between the maximum detection direction of the first detection member 410 and the direction of the connection end 210 facing the movable end 220. Specifically, the detection range of the first detection member 410 can also be 20° to 90°, with 20° being the angle between the minimum detection direction of the first detection member 410 and the direction of the connection end 210 facing the movable end 220.

[0070] In another embodiment, the detection range of the first detection member 410 may be only one detection direction. For example, the detection direction of the first detection member 410 is 0°, 20°, 30°, etc.

[0071] In one embodiment, the angle b2 between the detection direction of the second detection member 420 and the direction from the connection end 210 of the smoke guide plate 200 toward the movable end 220 is 0° to 90°. When the user enters the detection range of the second detection member 420, the user can be detected.

[0072] Specifically, the detection range of the second detection member 420 can be 0° to 90°, with the position where the connection end 210 is facing the movable end 220 being 0°. 0° is the angle between the minimum detection direction of the second detection member 420 and the direction of the connection end 210 toward the movable end 220, 90° is the angle between the maximum detection direction of the second detection member 420 and the direction of the connection end 210 toward the movable end 220, and the maximum detection direction of the second detection member 420 is away from the air inlet 110. Specifically, the detection range of the second detection member 420 can also be 20° to 90°, with 20° being the angle between the minimum detection direction of the second detection member 420 and the direction of the connection end 210 toward the movable end 220.

[0073] In another embodiment, the detection range of the second detection member 420 may be only one detection direction. For example, the detection direction of the second detection member 420 is 0°, 20°, 30°, etc.

[0074] See also Figure 2 and Figure 4 In one embodiment, the driving member 300 is used to drive the smoke guide plate 200 to rotate relative to the oil fume suction body 100. When the second detection member 420 detects a user, a second detection signal is fed back to the controller, and the controller controls the driving member 300 to drive the smoke guide plate 200 to rotate in a direction toward the oil fume suction body 100, thereby preventing the user from colliding with the smoke guide plate 200. When the second detection member 420 does not detect a user and the first detection member 410 detects a user, the first detection member 410 feeds back a first detection signal to the controller, and the controller controls the driving member 300 to drive the smoke guide plate 200 to rotate in a direction away from the oil fume suction body 100, thereby preventing the user from colliding with the smoke guide plate 200.

[0075] Specifically, the driving member 300 includes a driving source 310 and a crank 320. The driving source 310 is disposed on the oil fume suction body 100. One end of the crank 320 is rotatably connected to the driving source 310. The other end of the crank 320 is disposed on the smoke guide plate 200. The driving source 310 pushes the crank 320 to drive the smoke guide plate 200 to rotate. When in use, the driving source 310 drives the crank 320 to rotate, and the crank 320 further drives the smoke guide plate 200 to rotate relative to the oil fume suction body 100.

[0076] In this embodiment, the driving source 310 is an electric push rod, which drives the crank 320 to rotate relative to the oil smoke suction body 100, and then drives the smoke guide plate 200 to rotate through the crank 320.

[0077] In other embodiments, the driving source 310 may also be a motor, or a transmission structure driven by a motor, and the motor drives the crank 320 to rotate through the transmission structure, thereby driving the smoke guide plate 200 to rotate. For example, the rotation structure may be a gear rotation structure. In another embodiment, the driving source 310 may also be a cylinder, the crank 320 is rotatably disposed on the oil smoke suction body 100, the smoke guide plate 200 is disposed on one end of the crank 320, and the cylinder drives the other end of the crank 320 to rotate relative to the oil smoke suction body 100, thereby driving the smoke guide plate 200 to rotate relative to the oil smoke suction body 100.

[0078] In another embodiment, the driving member 300 is used to drive the smoke guide plate 200 to move up and down relative to the oil fume suction body 100. When the second detection member 420 detects a user, a second detection signal is fed back to the controller, and the controller controls the driving member 300 to drive the smoke guide plate 200 to move in a direction close to the oil fume suction body 100. When the second detection member 420 does not detect a user and the first detection member 410 detects a user, the first detection member 410 feeds back a first detection signal to the controller, and the controller controls the driving member 300 to drive the smoke guide plate 200 to move in a direction away from the oil fume suction body 100. In this embodiment, the up and down movement can be understood as the movement of the smoke guide plate 200 relative to the oil fume suction body 100 in the vertical direction. Of course, it can also be understood that after the smoke guide plate 200 moves relative to the range hood 10, the position in the vertical direction changes, and the movement path of the smoke guide plate 200 is not limited.

[0079] Specifically, the driving member 300 includes a driving source and a moving member, the smoke guide plate 200 is arranged on the oil smoke suction body 100 through the moving member, and the driving source is used to drive the moving member to drive the smoke guide plate 200 to move relative to the oil smoke suction body 100. When in use, the driving source drives the moving member to move, thereby driving the smoke guide plate 200 to move relative to the oil smoke suction body 100, so as to adjust the position of the smoke guide plate 200 to adapt to users of different heights.

[0080] In this embodiment, the driving source may be a cylinder, which pushes the moving member to drive the smoke guide plate 200 to move. In another embodiment, the driving source may also be an electric push rod, which pushes the moving rod to drive the smoke guide plate 200 to move. In other embodiments, the driving member 300 may also be other driving structures, as long as the smoke guide plate 200 can be moved up and down relative to the oil smoke suction body 100.

[0081] In one embodiment, a rotating member may be further provided on the connection end 210 of the smoke guide plate 200, and the smoke guide plate 200 is provided on the driving member 300 through the rotating member. The rotating member is used to drive the smoke guide plate 200 to rotate relative to the oil smoke suction body 100, so that the smoke guide plate 200 is arranged at an angle with the plane where the air inlet 110 is located, thereby facilitating the oil smoke to be sucked away from the air inlet 110.

[0082] When the driving member 300 is used to drive the smoke guide plate 200 to rotate relative to the oil smoke suction body 100, the rotating member can be omitted, and the smoke guide plate 200 is directly driven to rotate by the driving member 300 so that the smoke guide plate 200 is set at an angle with the plane where the air inlet 110 is located.

[0083] In one embodiment, the opening and closing angle a of the smoke guide plate 200 relative to the plane where the air inlet 110 is located is 0° to 180°, so as to facilitate adjusting the opening and closing angle of the smoke guide plate 200 and the plane where the air inlet 110 is located according to the usage.

[0084] Specifically, when in use, the opening and closing angle a between the smoke guide plate 200 and the plane where the air inlet 110 is located is a first angle, and the first angle is 60° to 100°. When in use, since the oil smoke will be blocked by the smoke guide plate 200 and drawn away by the air inlet 110, by setting the opening and closing angle a between the smoke guide plate 200 and the plane where the air inlet 110 is located to 60° to 100°, the smoke collecting effect of the smoke guide plate 200 can be ensured, so that the oil smoke can effectively enter the air inlet 110.

[0085] In other embodiments, during use, the opening and closing angle a between the smoke guide plate 200 and the plane where the air inlet 110 is located can be 70°, 80°, 90° or 100°.

[0086] In one embodiment, an angle detection member may be provided on the smoke guide plate 200 or the oil smoke suction body 100, and the angle detection member is used to sense the opening and closing angle of the smoke guide plate 200 and the plane where the air inlet 110 is located, and the angle detection member is electrically connected to the controller. By providing the angle detection member, it is convenient to detect the rotation angle of the smoke guide plate 200 relative to the oil smoke suction body 100.

[0087] Optionally, when the angle detection component detects that the opening and closing angle between the smoke guide plate 200 and the plane where the air inlet 110 is located is a first angle, the controller controls the driving component 300 to stop driving the smoke guide plate 200 to rotate.

[0088] Optionally, when the angle detection member detects that the opening and closing angle between the smoke guide plate 200 and the plane where the air inlet 110 is located is a second angle, the controller controls the oil smoke suction body 100 to stop working. Specifically, the second angle is 10° to 30°.

[0089] In one embodiment, the smoke guide plate 200 is an electrochromic plate, and the electrochromic plate is electrically connected to the controller, and the controller is used to control the electrochromic plate to change color according to the detection signal of the second detection member 420. When the user is tall, the second detection member 420 can detect the user, and the smoke guide plate 200 is located below the user's line of sight. Since the smoke guide plate 200 is an electrochromic plate, at this time, the controller controls the electrochromic plate to change color to a transparent color, thereby avoiding the smoke guide plate 200 from blocking the user's line of sight. When not in use or the second detection member 420 does not detect the user, the smoke guide plate 200 can change color to a non-transparent color.

[0090] In another embodiment, the smoke guide plate 200 may also be a transparent plate. When the user is tall, the smoke guide plate 200 is located below the user's line of sight. By setting the smoke guide plate 200 as a transparent plate, it is possible to avoid the smoke guide plate 200 blocking the user's line of sight. In other embodiments, the smoke guide plate 200 may also be other colored plate structures.

[0091] See also Figure 2 and Figure 3 In one embodiment, the range hood 10 further includes a sensing member 600, which is disposed on the surface of the smoke guide plate 200 facing the air inlet 110, and is used to sense the distance between the smoke guide plate 200 and the sensing object, and the angle c between the sensing direction of the sensing member 600 and the direction of the connecting end 210 of the smoke guide plate 200 toward the movable end 220 is greater than the angle b1 between the detection direction of the first detection member 410 and the direction of the connecting end 210 of the smoke guide plate 200 toward the movable end 220, and the sensing member 600 is electrically connected to the controller. In this embodiment, the sensing object is a pot, and in other embodiments, the sensing object may also be other objects disposed on the side of the smoke guide plate 200 facing the air inlet 110.

[0092] Since the angle c of the sensing direction of the sensing member 600 is greater than the angle b1 of the sensing direction of the first detection member 410, the first detection member 410 is used to detect the position of the user, while the sensing member 600 can detect the position of the pot during the cooking process, and then when the smoke guide plate 200 moves toward the air inlet 110, the sensing member 600 detects the pot. When the sensing signal detected by the sensing member 600 is less than the preset value, the smoke guide plate 200 is about to hit the pot. The driving member 300 can be stopped to drive the smoke guide plate 200 to continue to move, ensuring the safety of use.

[0093] Specifically, the sensing element 600 is disposed on the side of the first detection element 410 facing the connection end 210. Alternatively, the sensing element 600 can also be disposed on the movable end 220 of the smoke guide plate 200, as long as the sensing element 600 can detect the sensing object and determine the position of the sensing object.

[0094] In one embodiment, the sensing element 600 is an image acquisition element, which acquires the position of the sensing object through the image acquisition element, and then determines the distance between the smoke guide plate 200 and the sensing object. In another embodiment, the sensing element 600 can also be an infrared sensor or other sensing component, as long as it can sense the distance between the sensing object and the smoke guide plate 200.

[0095] like Figure 1 As shown, in one embodiment, the range hood 10 further includes a warning member 500, which is disposed on the range hood body 100 or the smoke guide plate 200, and the warning member 500 is electrically connected to the controller, and the controller is used to control the operation of the warning member 500 according to the sensing signal of the sensing member 600.

[0096] When the sensing element 600 senses that the distance between the sensing object and the smoke guide plate 200 is less than a preset value, the controller controls the alarm to start to remind the user to pay attention, thereby further improving the safety of use.

[0097] In other embodiments, when the sensing member 600 senses that the distance between the sensing object and the smoke guide plate 200 is less than a preset value, the controller can also control the smoke guide plate 200 to display as a non-transparent color. Since when the second detection member 420 detects a user, the controller controls the smoke guide plate 200 to move toward the air inlet 110, the smoke guide plate 200 is located in the user's line of sight, and the distance between the sensing member 600 and the sensing object is shortened. The user can be further reminded by displaying the smoke guide plate 200 as a non-transparent color. For example, the smoke guide plate 200 is controlled to display red to further alert the user.

[0098] In this embodiment, the warning member 500 is a buzzer. In other embodiments, the warning member 500 can also be a display light, or the warning member 500 can include a display light and a buzzer at the same time. As long as the warning member 500 can play a warning role.

[0099] In this embodiment, the range hood 10 is a side-suction range hood.

[0100] See also Figure 4 and Figure 5 In one embodiment, the control method of the range hood 10 in any of the above embodiments comprises the following steps:

[0101] Step S110: acquiring a first detection signal of the first detection element 410 and a second detection signal of the second detection element 420;

[0102] Step S120: if the second detection signal is obtained, the driving member 300 is controlled to drive the smoke guide plate 200 to move toward the air inlet 110 of the oil smoke absorbing body 100;

[0103] Step S130 : if the second detection signal is not obtained, and the first detection signal is obtained, the driving member 300 is controlled to drive the smoke guide plate 200 to move in a direction away from the air inlet 110 of the oil fume suction body 100 .

[0104] In the control method of the range hood 10, when a user stands in front of the range hood main body 100, if the user is of low height, the first detection member 410 can detect the user, and the second detection member 420 cannot detect the user. When the first detection signal of the first detection member 410 is obtained, the driving member 300 is controlled to drive the smoke guide plate 200 to move in a direction away from the air inlet 110 of the range hood main body 100, so that the smoke guide plate 200 moves in a direction away from the user. If the user is of high height, the second detection member 420 can detect the user, and then when the second detection signal of the second detection member 420 is obtained, the driving member 300 is controlled to drive the smoke guide plate 200 to move in a direction close to the air inlet 110 of the range hood main body 100, so that the smoke guide plate 200 moves in a direction away from the user's head. The range hood 10 is suitable for users of different heights, and can prevent users of different heights from hitting the smoke guide plate 200 with their heads during use, thereby improving the safety of use.

[0105] In one embodiment, after step S120, the following steps are further included:

[0106] Step S122: controlling the smoke guide plate 200 to change color to a transparent color, wherein the smoke guide plate 200 is an electrochromic plate.

[0107] Since the second detection member 420 can detect the user, the user is tall, and the smoke guide plate 200 is located below the user's line of sight. By changing the color of the smoke guide plate 200 to a transparent color, it is easy to observe the cooking conditions through the smoke guide plate 200, further improving the convenience of use. In other embodiments, step S122 can also be omitted.

[0108] In one embodiment, after step S120, the following steps are further included:

[0109] Step S124: obtaining a sensing signal from the sensing element 600;

[0110] Step S126: If the sensing signal is less than a preset value, the warning element 500 is controlled to start.

[0111] When the sensing element 600 senses that the distance between the sensing object and the smoke guide plate 200 is less than a preset value, the controller controls the alarm to start to alert the user, thereby further improving the safety of use and preventing the smoke guide plate 200 from hitting the sensing object while moving toward the air inlet 110.

[0112] In another embodiment, in one embodiment, after step S120, the process further includes:

[0113] Acquire the sensing signal of the sensing element 600;

[0114] If the sensing signal is less than a preset value, the smoke guide plate 200 is controlled to display a non-transparent color.

[0115] When the sensing member 600 senses that the distance between the sensing object and the smoke guide plate 200 is less than a preset value, the controller can also control the smoke guide plate 200 to display a non-transparent color. Since the controller controls the smoke guide plate 200 to move toward the air inlet 110 when the second detection member 420 detects a user, the smoke guide plate 200 is located in the user's line of sight. The smoke guide plate 200 can be further reminded by displaying a non-transparent color. For example, the smoke guide plate 200 is controlled to display red to further warn the user.

[0116] In other embodiments, if the sensing signal is less than a preset value, the warning element 500 can be controlled to start, and at the same time, the smoke guide plate 200 can be controlled to display a non-transparent color.

[0117] Optionally, if the sensing signal is less than a preset value, the driving member 300 is controlled to stop driving the smoke guide plate 200 to continue to move, thereby preventing the smoke guide plate 200 from continuing to move toward the air inlet 110 and hitting the sensing object.

[0118] In one embodiment, step S120 includes:

[0119] If a second detection signal of the second detection element 420 is obtained, the second detection signal is a distance value between the second detection element 420 and the user;

[0120] If the second detection signal is smaller than the anti-collision distance, the driving member 300 is controlled to drive the smoke guide plate 200 to move toward the air inlet 110 so that the second detection signal is greater than or equal to the anti-collision distance.

[0121] Since the second detection signal is a distance signal, when the distance value between the second detection component 420 and the user is less than the anti-collision distance, the user is likely to hit the smoke guide plate 200. By driving the smoke guide plate 200 to move toward the direction close to the air inlet 110 to move the smoke guide plate 200 away from the user's head until the distance value between the second detection component 420 and the user is greater than or equal to the anti-collision distance, the possibility of the user hitting the smoke guide plate 200 is reduced.

[0122] In one embodiment, step S130 includes:

[0123] If a first detection signal of the first detection element 410 is obtained, the first detection signal is a distance value between the first detection element 410 and the user;

[0124] If the first detection signal is smaller than the anti-collision distance, the driving member 300 is controlled to drive the smoke guide plate 200 to move toward the air inlet 110 so that the first detection signal is greater than or equal to the anti-collision distance.

[0125] Since the first detection signal is a distance signal, when the distance between the first detection component 410 and the user is less than the anti-collision distance, the user is likely to hit the smoke guide plate 200. By driving the smoke guide plate 200 to move in a direction away from the air inlet 110 so as to keep the smoke guide plate 200 away from the user's head until the distance between the first detection component 410 and the user is greater than or equal to the anti-collision distance, the possibility of the user hitting the smoke guide plate 200 is reduced.

[0126] In one embodiment, the anti-collision spacing is 5 mm to 30 mm. For example, the anti-collision spacing can be 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, etc.

[0127] In one embodiment, before step S110, the following steps are further included:

[0128] Step S112: controlling the smoke guide plate 200 to rotate relative to the fume absorbing body 100 so that the angle between the smoke guide plate 200 and the plane where the air inlet 110 is located is a first angle.

[0129] Before starting the first detection component 410 and the second detection component 420 to detect the user's position, the smoke guide plate 200 is set at a first angle to the plane where the air inlet 110 is located, so that the oil smoke can be effectively drawn away through the air inlet 110 and an initial position is provided for the detection of the first detection component 410 and the second detection component 420.

[0130] In one embodiment, the first angle is 60° to 100°. By setting the angle between the smoke guide plate 200 and the plane where the air inlet 110 is located to 60° to 100°, the smoke collection effect of the smoke guide plate 200 can be ensured, thereby ensuring the smoke suction effect. Specifically, the first angle can be 60°, 70°, 80°, 90°, 100°, etc. In other embodiments, the first angle can also be greater than 100° or less than 60°.

[0131] In one embodiment, the control method further includes:

[0132] Step S140: driving the smoke guide plate 200 to rotate relative to the oil fume absorbing body 100 so that the angle between the smoke guide plate 200 and the plane where the air inlet 110 is located is a second angle, and controlling the oil fume absorbing body 100 to stop running.

[0133] When the angle between the smoke guide plate 200 and the plane where the air inlet 110 is located is a second angle, it can be considered that the smoke guide plate 200 is close to or covers the air inlet 110, and the smoke guiding ability of the smoke guide plate 200 is poor at this time. It can be considered that the range hood 10 is not in use, and the range hood body 100 is controlled to stop running.

[0134] In this embodiment, the second angle is smaller than the first angle. Specifically, the second angle is 10° to 30°. In other embodiments, the second angle may be smaller than 10°. When the angle between the smoke guide plate 200 and the plane where the air inlet 110 is located is the second angle, the range hood 100 is controlled to stop running, so that the range hood 10 enters the shutdown state.

[0135] It should be understood that although Figure 5 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 5 At least part of the steps may include multiple steps or multiple stages. These steps or stages are not necessarily performed at the same time, but can be performed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

[0136] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0137] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0138] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0139] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0140] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0141] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0142] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

Claims

1. A range hood, characterized in that: The range hood comprises: An oil fume absorbing body, wherein an air inlet is provided on the oil fume absorbing body; A smoke guide plate, the smoke guide plate is movably arranged on a side of the oil smoke suction body where the air inlet is opened, and the smoke guide plate can be covered at the air inlet; A control unit, the control unit comprising a controller, a first detection member and a second detection member, the first detection member being arranged on a surface of the smoke guide plate facing the air inlet, and the second detection member being arranged on a surface of the smoke guide plate facing away from the air inlet; the first detection member and the second detection member are both electrically connected to the controller; and A driving member, the driving member is electrically connected to the controller, and the controller is used to control the driving member to drive the smoke guide plate to move relative to the oil smoke absorption body according to the detection signals of the first detection member and the second detection member; The range hood is capable of acquiring a first detection signal of the first detection element and a second detection signal of the second detection element; If the second detection signal is obtained, the driving member is controlled to drive the smoke guide plate to move toward the air inlet of the smoke suction body; If the second detection signal is not obtained, and the first detection signal is obtained, the driving member is controlled to drive the smoke guide plate to move in a direction away from the air inlet of the oil smoke suction body.

2. The range hood according to claim 1, characterized in that: One end of the smoke guide plate is a connecting end, and the connecting end can be movably arranged on the oil smoke suction body. The end of the smoke guide plate away from the connecting end is a movable end, and the first detection member and the second detection member are both arranged on the movable end.

3. The range hood according to claim 2, characterized in that: An included angle b1 between the detection direction of the first detection member and the direction of the connection end of the smoke guide plate toward the movable end is 0° to 90°; and / or An included angle b2 between a detection direction of the second detection member and a direction of the connecting end of the smoke guide plate toward the movable end is in a range of 0° to 90°.

4. The range hood according to claim 2, characterized in that: The invention also includes a sensing component, which is arranged on the surface of the smoke guide plate facing the air inlet, and is used to sense the distance between the smoke guide plate and the sensing object. The angle c between the sensing direction of the sensing component and the direction of the connecting end of the smoke guide plate toward the movable end is greater than the angle b1 between the detection direction of the first detection component and the direction of the connecting end of the smoke guide plate toward the movable end. The sensing component is electrically connected to the controller.

5. The range hood according to claim 4, characterized in that: It also includes a warning member, which is arranged on the oil fume suction body or the smoke guide plate, and the warning member is electrically connected to the controller, and the controller is used to control the operation of the warning member according to the sensing signal of the sensing member.

6. The range hood according to claim 1, characterized in that: The number of the first detection members is at least two, different first detection members are electrically connected in parallel, and different first detection members are arranged at intervals on the surface of the smoke guide plate facing the air inlet; and / or The number of the second detection members is at least two, different second detection members are electrically connected in parallel, and different second detection members are arranged at intervals on the surface of the smoke guide plate facing away from the air inlet.

7. The range hood according to any one of claims 1 to 6, characterized in that: The first detection element is an infrared sensor or an image detection element; and / or The second detection element is an infrared sensor and an image detection element.

8. The range hood according to any one of claims 1 to 6, characterized in that: The driving member is used to drive the smoke guide plate to rotate relative to the oil smoke absorbing body; or The driving member is used for driving the smoke guide plate to move up and down relative to the oil smoke absorbing body.

9. The range hood according to claim 8, characterized in that: If the driving member is used to drive the smoke guide plate to rotate relative to the oil smoke suction body, the driving member includes a driving source and a crank, the driving source is arranged on the oil smoke suction body, one end of the crank is rotatably connected to the driving source, and the other end of the crank is arranged on the smoke guide plate, and the driving source pushes the crank to drive the smoke guide plate to rotate; or If the driving member is used to drive the smoke guide plate to move up and down relative to the oil fume suction body, the driving member includes a driving source and a moving member, the smoke guide plate is set on the oil fume suction body through the moving member, and the driving source is used to drive the moving member to drive the smoke guide plate to move relative to the oil fume suction body.

10. The range hood according to any one of claims 1 to 6, characterized in that: The smoke guide plate is an electrochromic plate, the electrochromic plate is electrically connected to the controller, and the controller is used to control the electrochromic plate to change color according to the detection signal of the second detection element; or The smoke guide plate is a transparent plate.

11. The range hood according to any one of claims 1 to 6, characterized in that: An angle detection component is also provided on the smoke guide plate or the oil smoke suction body. The angle detection component is used to sense the opening and closing angle of the smoke guide plate and the plane where the air inlet is located. The angle detection component is electrically connected to the controller.

12. A control method for a range hood, characterized in that: The range hood comprises a range hood body, a smoke guide plate, a driving member and a control unit, wherein an air inlet is provided on the range hood body, the smoke guide plate can be movably arranged on a side of the range hood body where the air inlet is provided, and the smoke guide plate can be covered at the air inlet; the control unit comprises a first detection member and a second detection member, wherein the first detection member is arranged on a surface of the smoke guide plate facing the air inlet, and the second detection member is arranged on a surface of the smoke guide plate facing away from the air inlet; The control method comprises the following steps: Acquire a first detection signal of the first detection element and a second detection signal of the second detection element; If the second detection signal is obtained, the driving member is controlled to drive the smoke guide plate to move toward the air inlet of the smoke suction body; If the second detection signal is not obtained, and the first detection signal is obtained, the driving member is controlled to drive the smoke guide plate to move in a direction away from the air inlet of the oil smoke suction body.

13. The control method of the range hood according to claim 12, characterized in that: If the second detection signal is obtained, after the step of controlling the driving member to drive the smoke guide plate to move toward the air inlet of the oil smoke suction body, the method further includes: The smoke guide plate is controlled to change color to a transparent color, and the smoke guide plate is an electrochromic plate.

14. The control method of the range hood according to claim 13, characterized in that: If the second detection signal is obtained, after the step of controlling the driving member to drive the smoke guide plate to move toward the air inlet of the oil smoke suction body, the method further includes: Acquiring a sensing signal of a sensing element, wherein the sensing element is disposed on a surface of the smoke guide plate facing the air inlet, and the sensing element is used to sense a distance between the smoke guide plate and a sensing object; If the sensing signal is less than a preset value, the warning element is controlled to be activated, and / or the smoke guide plate is controlled to be displayed in a non-transparent color.

15. The control method of the range hood according to claim 12, characterized in that: If the detection signal of the second detection element is obtained, the step of controlling the driving element to drive the smoke guide plate to move toward the air inlet of the oil smoke suction body comprises: If a second detection signal of the second detection element is obtained, the second detection signal is a distance value between the second detection element and the user; If the second detection signal is smaller than the anti-collision distance, the driving member is controlled to drive the smoke guide plate to move toward the air inlet, so that the second detection signal is greater than or equal to the anti-collision distance.

16. The control method of the range hood according to claim 12, characterized in that: If the second detection signal is not obtained, and the first detection signal is obtained, the step of controlling the driving member to drive the smoke guide plate to move in a direction away from the air inlet of the oil smoke suction body comprises: If a first detection signal of the first detection element is obtained, the first detection signal is a distance value between the first detection element and the user; If the first detection signal is smaller than the anti-collision distance, the driving member is controlled to drive the smoke guide plate to move toward the air inlet, so that the first detection signal is greater than or equal to the anti-collision distance.

17. The control method of the range hood according to claim 15 or 16, characterized in that: The anti-collision spacing is 5mm to 30mm.

18. The control method of a range hood according to any one of claims 12 to 16, characterized in that: The step of obtaining the first detection signal of the first detection element and the second detection signal of the second detection element includes: The smoke guide plate is controlled to rotate relative to the oil smoke suction body so that the angle between the smoke guide plate and the plane where the air inlet is located is a first angle.

19. The control method of the range hood according to claim 18, characterized in that: The first angle is 60° to 100°.

20. The control method of a range hood according to any one of claims 12 to 16, characterized in that: The control method further comprises: The smoke guide plate is driven to rotate relative to the oil fume suction body so that the angle between the smoke guide plate and the plane where the air inlet is located is a second angle, and the oil fume suction body is controlled to stop running.

21. The control method of the range hood according to claim 20, characterized in that: The second angle is 10° to 30°.

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