A smoke guide plate control method and device for range hood and range hood

Abstract

The present invention discloses a smoke guide plate control method and device for a range hood and a range hood including the same. The range hood includes a smoke guide plate control device, a body, an adjustment motor, and a controllable horizontal limiter; the adjustment motor is fixedly connected to the body, including a rotating shaft; the smoke guide plate is fixedly connected to the rotating shaft; the horizontal limiter is connected to the adjustment motor; when the horizontal limiter is in a limiting state and the smoke guide plate rotates to a horizontal position, the horizontal limiter is triggered to send a control signal to control the adjustment motor to stop rotating. The method includes: when the smoke guide plate needs to rotate counterclockwise or clockwise from a horizontal position, the horizontal limiter is controlled to be in a non-limiting state; when the smoke guide plate needs to be reset horizontally, the horizontal limiter is controlled to be in a limiting state; when the smoke guide plate rotates to a horizontal position, the horizontal limiter is triggered; the horizontal limiter sends a control signal to control the adjustment motor to stop rotating. The smoke guide plate is made parallel to the bottom surface of the body when it is reset horizontally, thereby improving user experience.

Description

Technical Field

[0001] This invention belongs to the field of household appliance technology, specifically, it relates to a method, device and range hood for controlling the smoke guide plate of a range hood. Background Art

[0002] Existing range hoods can intelligently adjust the airflow and static pressure by changing the angle of the guide plate according to the amount of cooking fumes. When cooking, if the consumer's hands are oily, the range hood's automatic adjustment of the guide plate angle can prevent oil from getting onto the control panel. However, the rotatable guide plate has a problem of not being parallel to the ground when resetting, affecting the user experience. Summary of the Invention

[0003] This invention provides a method, device, and range hood for controlling the smoke guide plate, ensuring that the smoke guide plate is parallel to the bottom surface of the range hood body when it is horizontally reset, thereby improving the user experience.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A method for controlling a smoke guide plate in a range hood, the range hood comprising a smoke guide plate, an adjusting motor, and a controllable horizontal limiter; the adjusting motor being electrically connected to the horizontal limiter; the method comprising:

[0006] When the smoke guide plate needs to be rotated counterclockwise or clockwise from a horizontal position, the horizontal limiter is controlled to be in a non-limited state;

[0007] When the smoke guide plate needs to be horizontally reset, the horizontal limiter is controlled to be in the limit state;

[0008] When the smoke guide plate rotates to the horizontal position, the horizontal limiter is triggered; the horizontal limiter sends a control signal; the control signal controls the regulating motor to stop.

[0009] Furthermore, the range hood also includes a left limit switch and a right limit switch; the method further includes:

[0010] When the range hood only receives the signal to turn on the left stove, the smoke guide plate rotates counterclockwise from the horizontal position to the left limit position;

[0011] When the range hood only receives the signal to turn on the right stove, the smoke guide plate rotates clockwise from the horizontal position to the right limit position;

[0012] When the range hood receives both the signal to turn on the left stove and the signal to turn on the right stove, the smoke guide plate will not rotate.

[0013] When a change in the current state is received, it is determined that the left stove is on, the right stove is on, both the left and right stoves are on, or both the left and right stoves are off.

[0014] When a signal is received that both the left and right stoves are either off or both are on, a horizontal reset is performed.

[0015] When a signal is received that the left or right stove is turned on, the smoke guide plate is controlled to rotate counterclockwise to the left limit position or the smoke guide plate is controlled to rotate to the right limit position.

[0016] A smoke guide plate control device for a range hood, the range hood including a smoke guide plate and a body, the smoke guide plate control device comprising:

[0017] An adjusting motor, which is fixedly connected to the body, includes a rotating shaft; the smoke guide plate is fixedly connected to the rotating shaft and rotates with the rotating shaft or stops rotating;

[0018] A horizontal limiter, which is a controllable limiter, is connected to the regulating motor. When the horizontal limiter is in the limit state and the smoke guide plate rotates to the horizontal position, the horizontal limiter is triggered to send a control signal to control the regulating motor to stop rotating.

[0019] As a specific design of the smoke guide plate control device, the horizontal limiter includes:

[0020] An electromagnet, which is fixedly connected to the machine body;

[0021] A jacking pin is located below the electromagnet; when the electromagnet is energized, the jacking pin moves upward and connects with the electromagnet; when the electromagnet is de-energized, the jacking pin disengages from the electromagnet and moves downward.

[0022] The slot is fitted to the lower end of the pin and is fixed in position relative to the smoke guide plate. When the pin disengages from the electromagnet and the smoke guide plate rotates to a horizontal position, the pin engages in the slot, and the adjusting motor stops rotating.

[0023] Furthermore, the horizontal limiter also includes an electromagnet box; the electromagnet is located inside the electromagnet box; a guide rail, a first limiting structure, and a second limiting structure adapted to the mounting of the pin are provided inside the electromagnet box; the pin is mounted inside the guide rail and can move along the guide rail between the first limiting structure and the second limiting structure.

[0024] Preferably, the jacking pin includes a head and legs; the legs are cylindrical; the lateral or longitudinal dimension of the head is greater than the lateral or longitudinal dimension of the legs; the electromagnet box includes a cavity adapted to the head, which includes an upper wall and a lower wall; the head is located in the cavity; the upper wall is connected to the electromagnet and serves as the first limiting structure; the lower wall serves as the second limiting structure; the jacking pin passes through the lower wall.

[0025] Furthermore, it also includes a horizontal limiting rod, one end of which is fixedly connected to the rotating shaft; the other end is provided with a slot on its outer side, and the two sides of the slot are set as downward inclined arcs.

[0026] As another design of the smoke guide plate control device, the horizontal limiter includes:

[0027] A micro switch, which is fixedly connected to the body;

[0028] A horizontal limiting rod has one end fixedly connected to the rotating shaft, and a trigger part is provided on the outer side of the other end; the trigger part is a protrusion; when the micro switch is energized and the smoke guide plate rotates to the horizontal position, the trigger part triggers the micro switch; the micro switch sends out the control signal to control the regulating motor to stop.

[0029] Preferably, it also includes a smoke guide plate bracket, which includes at least one horizontal beam and at least one vertical beam; each of the horizontal beams is arranged horizontally and fixedly connected to the smoke guide plate; one end of each of the vertical beams is fixedly connected to each of the horizontal beams; and the other end of one of the vertical beams is fixedly connected to the rotating shaft.

[0030] A range hood includes a smoke guide plate, a body, and a smoke guide plate control device.

[0031] Compared with the prior art, the advantages and positive effects of the present invention are as follows: The smoke guide plate control method, device and smoke guide plate of the present invention, by setting a horizontal limiter, controls the horizontal limiter to be in a limited state when the smoke guide plate needs to be horizontally reset, so that it limits the smoke guide plate when it is rotated to a horizontal position, so that the smoke guide plate is parallel to the bottom surface of the machine body when it is in a horizontal position, thereby improving the user experience. Attached Figure Description

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1This is a schematic diagram of the structure of an embodiment of a smoke guide plate control device proposed in this invention;

[0034] Figure 2 yes Figure 1 A schematic diagram of an embodiment of the smoke guide plate control device;

[0035] Figure 3 This is a schematic diagram of the structure of a range hood according to an embodiment of the present invention when the smoke guide plate is in a horizontal position;

[0036] Figure 4 yes Figure 3 A schematic diagram of the structure of the range hood in the embodiment when the smoke guide plate is in the left limit position;

[0037] Figure 5 yes Figure 3 A schematic diagram of the structure of the range hood in the embodiment when the smoke guide plate is in the right limit position;

[0038] Figure 6 This is a schematic diagram of the structure of a range hood according to another embodiment of the present invention when the smoke guide plate is in a horizontal position;

[0039] Figure 7 yes Figure 6 A schematic diagram of the structure of the range hood in the embodiment when the smoke guide plate is in the left limit position;

[0040] Figure 8 yes Figure 6 A schematic diagram of the structure of the range hood in the embodiment when the smoke guide plate is in the right limit position;

[0041] Figure 9 This is a flowchart of an embodiment of a smoke guide plate control method for a range hood proposed in this invention;

[0042] Figure 10 This is a flowchart of another embodiment of the smoke guide plate control method for a range hood proposed in this invention.

[0043] In the picture,

[0044] 1. Smoke guide plate; 2. Body; 3. Adjusting motor; 4. Horizontal limiter; 5. First fixing component; 6. Second fixing component; 7. Crossbeam; 8. Vertical beam; 9. Longitudinal beam; 10. Driven rotating shaft; 20. Rotating connecting component; 30. Bushing; 40. Left limiter; 50. Right limiter; 21. Bottom surface; 31. Rotating shaft; 41. Electromagnet; 42. Pin; 43. Slot; 44. Electromagnet box; 45. Guide rail; 46. Cavity; 81. First vertical beam; 82. Second vertical beam; 421. Head; 422. Legs; 431. Horizontal limiter rod. DETAILED DESCRIPTION

[0045] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0046] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 This invention discloses a method, device, and range hood for controlling the smoke guide plate of a range hood. The range hood includes the aforementioned smoke guide plate control device, a smoke guide plate 1, and a body 2. The smoke guide plate control device includes an adjusting motor 3 and a horizontal limiter 4. The adjusting motor 3 is fixedly connected to the body 2 and includes a rotating shaft 31. The smoke guide plate 1 is fixedly connected to the rotating shaft 31 and rotates or stops rotating with the rotating shaft 31, thereby increasing the air intake area of ​​the range hood for an open cooktop or ensuring that two open cooktops have the same air intake area. The horizontal limiter 4 is a controllable limiter connected to the adjusting motor 3. When the horizontal limiter 4 is in the limit state and the smoke guide plate 1 rotates to a horizontal position, the horizontal limiter 4 is triggered to send a control signal, controlling the adjusting motor 3 to stop rotating, thus stopping the smoke guide plate 1 in the horizontal position and improving the user experience. The control method is that when the smoke guide plate 1 needs to rotate counterclockwise or clockwise from the horizontal position, the horizontal limiter 4 is controlled to be in the non-limit state. When the smoke guide plate 1 needs to be horizontally reset, the horizontal limiter 4 is controlled to be in the limit state. When the smoke guide plate 1 is rotated to the horizontal position, the horizontal limiter 4 is triggered, and the horizontal limiter 4 sends a control signal to control the regulating motor 3 to stop rotating, so that the smoke guide plate 1 stops in the horizontal position, improving the user experience.

[0047] The structure and working principle of a smoke guide plate control method, device, and range hood of the present invention will be described in detail below through specific embodiments.

[0048] Example 1, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The smoke guide plate control device also includes a smoke guide plate bracket, which includes at least one horizontal beam 7 and at least one vertical beam 8. Each horizontal beam 7 is arranged laterally and fixedly connected to the smoke guide plate 1. One end of each vertical beam 8 is fixedly connected to each horizontal beam 7; the other end of one of the vertical beams 8 is fixedly connected to the rotating shaft 31 of the adjusting motor 3, so that the smoke guide plate 1 is driven to rotate by the smoke guide plate bracket. Preferably, each horizontal beam 7 is located in the middle of the left-right direction of the smoke guide plate 1, and one end of each vertical beam 8 is located in the middle of the left-right direction of each horizontal beam 7, increasing the stability of the smoke guide plate 1 during rotation. Preferably, there are two horizontal beams 7, located at both ends of the smoke guide plate 1 in the front-rear direction; there are two vertical beams 8, each fixedly connected to each horizontal beam 7 in a one-to-one correspondence. Preferably, the smoke guide plate bracket also includes a longitudinal beam 9, whose two ends are fixedly connected to the two horizontal beams 7 respectively.

[0049] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The smoke guide plate control device also includes a first fixing member 5 and a second fixing member 6, which are fixedly connected to the body 2 respectively. Preferably, the adjusting motor 3 is fixedly connected to the first fixing member 5. The vertical beam 8 includes a first vertical beam 81 and a second vertical beam 82; the first vertical beam 81 is fixedly connected to the rotating shaft 31 and rotatably connected to the second fixing member 6. Preferably, the smoke guide plate control device also includes a driven rotating shaft 10 and two rotating connecting members 20. The driven rotating shaft 10 is fixedly connected to the end of the second vertical beam 82 through a rotating connecting member 20. A hole is provided on the second fixing member 6 at the position corresponding to the driven rotating shaft 10, which is rotatably adapted to the driven rotating shaft 10; the driven rotating shaft 10 is installed in the hole. Preferably, the hole is a through hole, and a bushing 30 is provided on the through hole to reduce the rotational resistance of the driven rotating shaft 10. Preferably, the bushing 30 is a POM sleeve. Of course, the bushing 30 can also be a bearing, which connects the driven rotating shaft 10 and the second fixing member 6. The rotating shaft 31 is fixedly connected to the end of the first vertical beam 81 via a rotating connector 20. Preferably, the first fixing member 5 and the second fixing member 6 are both flat bent parts.

[0050] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The horizontal limiter 4 includes an electromagnet 41, a locking pin 42, and a locking slot 43. The locking pin 42 is located below the electromagnet 41 and can move vertically up and down. When the electromagnet 41 is energized, the locking pin 42 moves upward and connects with the electromagnet 41; when the electromagnet 41 is de-energized, the locking pin 42 disengages from the electromagnet 41 and moves downward. The locking slot 43 is fitted and adapted to the lower end of the locking pin 42 and is located below the locking pin 42, fixed in position relative to the smoke guide plate 1. When the electromagnet 41 is de-energized and the smoke guide plate 1 rotates to a horizontal position, the lower end of the locking pin 42 engages with the locking slot 43, causing the smoke guide plate 1 to stop rotating and remain in a horizontal position, and sending a control signal to control the regulating motor 3 to stop rotating. Preferably, the smoke guide plate control device also includes a controller, which is connected to the regulating motor 3; the control signal is that when the smoke guide plate 1 cannot rotate due to the locking pin 42 engaging with the locking slot 43, the regulating motor 3 generates a stall current signal, which the controller receives and controls the regulating motor 3 to stop rotating according to the stall current signal. When the smoke guide plate 1 of the present invention is reset to the horizontal position, the horizontal position of the smoke guide plate 1 is maintained by the physical structure, and the control signal generated therefrom controls the regulating motor 3 to stop rotating, which improves the user experience and has a low cost.

[0051] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 Preferably, the smoke guide plate control device further includes an electromagnet box 44; an electromagnet 41 is disposed inside the electromagnet box 44, and a guide rail 45 adapted to the mounting of the pin 42 and a first limiting structure and a second limiting structure are provided inside the electromagnet box 44 to ensure that the pin 42 can move vertically up and down between the first limiting structure and the second limiting structure along the guide rail 45. Preferably, a cavity 46 adapted to the mounting of the head 421 is provided inside the electromagnet box 44, which includes an upper wall and a lower wall; the upper wall is connected to the electromagnet 41 and serves as the first limiting structure; the lower wall serves as the second limiting structure. The pin 42 includes a head 421 and a leg 422. The lateral or longitudinal dimension of the head 421 is greater than the lateral or longitudinal dimension of the leg 422, and the leg 422 passes through the lower wall and is located in the guide rail 45, so that the head 421 can move up and down between the upper wall and the lower wall, ensuring the travel of the lower end of the pin 42 in the vertical direction.

[0052] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 Preferably, the smoke guide plate control device further includes a horizontal limiting rod 431, the lower end of which is fixedly connected to the rotating shaft 31, and the upper outer side is provided with a slot 43. Preferably, the slot 43 is an elongated slot. Preferably, the two sides of the slot 43 are set as downward sloping arcs, so that the locking pin 42 can be smoothly locked into the slot 43 when the electromagnet 41 is de-energized.

[0053] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 Preferably, a left limiter 40 and a right limiter 50 are respectively provided on both sides of the horizontal limiter 431, so that the horizontal limiter 431 can rotate between the left limiter 40 and the right limiter 50, and stops rotating at the left limiter 40 when rotating counterclockwise and at the right limiter 50 when rotating clockwise. Preferably, the left limiter 40 and the right limiter 50 are horizontally arranged columns, both of which are fixedly connected to the first fixing member 5.

[0054] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 9 The smoke guide plate control method of the present invention is as follows: When a stove ignition start signal is received, the electromagnet 41 is energized. Then, the start direction of the stove is determined, whether it is a single-side stove start or a double-side stove start; when it is a double-side stove start, the smoke guide plate 1 is not rotated; when it is a single-side stove start, it is determined whether it is a left-side stove start or a right-side stove start; when it is a left-side stove start, the regulating motor 3 is controlled to rotate counterclockwise to the left limit 40, and the electromagnet 41 is de-energized; when it is a right-side stove start, the regulating motor 3 is controlled to rotate clockwise to the right limit 50, and the electromagnet 41 is de-energized. When a signal is received that changes the current stove opening state, it is determined whether the stove opening state is that only one stove is on, both stoves are on, or both stoves are off; when only one stove is on, the electromagnet 41 is energized and the stove direction is determined, and the regulating motor 3 is rotated according to the stove opening direction; when both stoves are on or both stoves are off, the electromagnet 41 remains de-energized, and the smoke guide plate 1 is reset to a horizontal position. The range hood continuously receives signals from the cooktop when it is turned on and off and continuously judges changes in the current state.

[0055] Example 2, refer to Figure 6 , Figure 7 and Figure 8The horizontal limiter 4 includes a micro switch and a trigger. The trigger is a protrusion and is fixedly connected to the smoke guide plate 1. The micro switch is located above the trigger. When the micro switch is energized and the smoke guide plate 1 rotates to the horizontal position, the trigger triggers the micro switch, which sends a control signal to stop the regulating motor 3 from rotating. Preferably, the horizontal limiter 4 includes a horizontal limit rod 431; the trigger is located at one end of the horizontal limit rod 431, and the other end is fixedly connected to the rotating shaft 31. Preferably, the two sides of the trigger are set as downward-sloping arcs to reduce the resistance of the horizontal limit rod 431 before triggering the micro switch. Considering the time delay between the micro switch triggering the regulating motor 3 to stop rotating and the regulating motor 3 actually stopping, preferably, the area of ​​the protrusion can be appropriately increased so that the smoke guide plate 1 triggers the micro switch before reaching the horizontal position, controls the regulating motor 3 to be de-energized, eliminates the delay in stopping the regulating motor 3, and stops the smoke guide plate 1 in the horizontal position, parallel to the bottom surface 21 of the body 2, which improves the user experience and has a lower cost. Except for the horizontal limiter 4, the other structures in this embodiment are the same as in Embodiment 1.

[0056] Reference Figure 6 , Figure 7 , Figure 8 and Figure 10 The smoke guide plate control method in this embodiment is as follows: when the stove ignition start signal is received, the micro switch is de-energized. Then, the start direction of the stove is determined, whether it is a single-side stove start or a double-side stove start; when it is a double-side stove start, the smoke guide plate 1 is controlled not to rotate; when it is a single-side stove start, it is determined whether it is a left-side stove start or a right-side stove start; when it is a left-side stove start, the regulating motor 3 is controlled to rotate counterclockwise to rotate the smoke guide plate 1 to the left limit 40, and the regulating motor 3 is de-energized to stop the smoke guide plate 1 from rotating; when it is a right-side stove start, the regulating motor 3 is controlled to rotate clockwise to rotate the smoke guide plate 1 to the right limit 50, and the regulating motor 3 is de-energized to stop the smoke guide plate 1 from rotating. When a signal is received indicating a change in the current stove's on / off status, the system determines whether only one stove is on, both are on, or both are off. If only one stove is on, the system determines its opening direction and controls the regulating motor 3 to rotate accordingly. If both stoves are on or both are off, the system powers on a microswitch, resets the smoke guide plate 1 to a horizontal position, triggers the microswitch, and sends a control signal to de-energize the regulating motor 3. During operation, the range hood continuously receives stove on / off signals, determines whether its status has changed and how, and executes relevant control actions based on the determination results.

[0057] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0059] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0061] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0062] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A smoke guide plate control method for a range hood, characterized in that: The range hood comprises a body, a smoke guide plate, an adjustment motor, and a controllable horizontal limiter; the adjustment motor is electrically connected to the horizontal limiter; the horizontal limiter comprises: An electromagnet fixedly connected to the fuselage; A card pin is located below the electromagnet; when the electromagnet is powered on, the card pin moves upward and connects with the electromagnet; when the electromagnet is powered off, the card pin separates from the electromagnet and moves downward; A card slot, which is adapted to be clamped with the lower end of the card pin and fixed relative to the smoke guide plate; when the card pin is separated from the electromagnet and the smoke guide plate rotates to a horizontal position, the card pin is clamped into the card slot; and the regulating motor stops rotating; The method comprises: When the smoke guide plate needs to rotate counterclockwise or clockwise from a horizontal position, the horizontal limiter is controlled to be in a non-limiting state; When the smoke guide plate needs to be reset horizontally, the horizontal limiter is controlled to be in a limited state; When the smoke guide plate rotates to the horizontal position, the horizontal limiter is triggered; the horizontal limiter sends a control signal; and the control signal controls the regulating motor to stop rotating.

2. The smoke guide plate control method according to claim 1, characterized in that: The range hood further includes a left limiter and a right limiter; and the method further includes: When the range hood receives only a signal to turn on the left stove, the smoke guide plate rotates counterclockwise from the horizontal position to the left limit position; When the range hood receives only a signal to turn on the right stove, the smoke guide plate rotates clockwise from the horizontal position to the right limit position; When the range hood receives a signal to turn on both the left stove and the right stove, the smoke guide plate does not rotate; When receiving a change in the current state, it is determined that the left range is turned on, the right range is turned on, the left range and the right range are both turned on, or the left range and the right range are both turned off; When receiving a signal that both the left stove and the right stove are turned off or on, performing a horizontal reset; When a signal indicating that the left stove is turned on or the right stove is turned on is received, the smoke guide plate is controlled to rotate counterclockwise to the left limit position or the smoke guide plate is controlled to rotate to the right limit position.

3. A smoke guide plate control device for a range hood, the range hood comprising a smoke guide plate and a body, characterized in that: include: An adjusting motor, which is fixedly connected to the body and includes a rotating shaft; the smoke guide plate is fixedly connected to the rotating shaft and rotates or stops rotating with the rotating shaft; A horizontal limiter, which is a controllable limiter, is connected to the regulating motor; when the horizontal limiter is in a limiting state and the smoke guide plate rotates to a horizontal position, the horizontal limiter is triggered to send a control signal to control the regulating motor to stop rotating; the horizontal limiter includes: An electromagnet fixedly connected to the fuselage; A card pin is located below the electromagnet; when the electromagnet is powered on, the card pin moves upward and connects with the electromagnet; when the electromagnet is powered off, the card pin separates from the electromagnet and moves downward; The card slot is an elongated card slot, which is adapted to be clamped with the lower end of the card pin and fixed relative to the smoke guide plate; when the card pin is disengaged from the electromagnet and the smoke guide plate rotates to a horizontal position, the card pin is clamped into the card slot; and the regulating motor stops rotating.

4. The smoke guide plate control device according to claim 3, characterized in that: The horizontal limiter also includes an electromagnet box; the electromagnet is located in the electromagnet box; a guide rail, a first limit structure and a second limit structure adapted for the installation of the card pin are arranged in the electromagnet box; the card pin is installed in the guide rail and can move along the guide rail between the first limit structure and the second limit structure.

5. The smoke guide plate control device according to claim 4, characterized in that: The card pin includes a head and a leg; the leg is cylindrical; the lateral or longitudinal size of the head is larger than the lateral or longitudinal size of the leg; the electromagnet box includes a cavity adapted for installation with the head, which includes an upper wall and a lower wall; the head is located in the cavity; the upper wall is connected to the electromagnet and is the first limiting structure; the lower wall is the second limiting structure; the card pin passes through the lower wall.

6. The smoke guide plate control device according to claim 3, characterized in that: It also includes a horizontal limiting rod, one end of which is fixedly connected to the rotating shaft; the outer side of the other end is provided with the clamping groove, and both sides of the clamping groove are provided with arcs inclined downward.

7. The smoke guide plate control device according to any one of claims 3 to 6, characterized in that: It also includes a smoke guide plate bracket, which includes at least one horizontal beam and at least one vertical beam; each of the horizontal beams is arranged horizontally and fixedly connected to the smoke guide plate; one end of each of the vertical beams is respectively fixedly connected to each of the horizontal beams; the other end of one of the vertical beams is fixedly connected to the rotating shaft.

8. A range hood, characterized in that: It comprises a smoke deflector plate, a body and a smoke deflector plate control device as claimed in any one of claims 3 to 7.

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