Air guide device, range hood and method for determining parameters of air guide device

Abstract

The present invention provides an air guide device, a range hood and a method for determining parameters of the air guide device. The air guide device comprises an air guide plate, a first connecting arm, a second connecting arm and a transmission motor. The air guide plate can pivot between a first station and a second station with a first pivot axis as an axis. The rotating shaft of the transmission motor can pivot around the second pivot axis. The first end of the first connecting arm can be pivotally connected to a predetermined position on the air guide plate. The second end of the first connecting arm can be pivotally connected to the first end of the second connecting arm. The second end of the second connecting arm is connected to the rotating shaft of the transmission motor. The rotation angle β of the rotating shaft of the transmission motor during the process of the air guide plate pivoting from the first station to the second station and the rotation speed n of the rotating shaft of the transmission motor satisfy a specific relationship. By limiting the parameters of the components in the air guide device, the opening and closing speed of the air guide plate in the air guide device is slowed down and the opening and closing time is prolonged. This is conducive to the precise control of the air guide plate in the air guide device.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical design, and in particular to an air guide device, a range hood and a method for determining parameters of the air guide device. Background Art

[0002] As the public pursues a higher quality of life, people have increasingly higher requirements for the air intake volume of the air inlet corresponding to the air guide device, and thus require that the air guide device be able to be precisely controlled.

[0003] Taking range hoods as an example, some existing range hoods have air guide plates that can be opened and closed. When the range hood is in use, the air guide plate is opened to open the air inlet corresponding to the air guide plate; when the range hood is stopped, the air guide plate is closed to close the air inlet. The movement of the air guide plate is usually achieved through a four-bar linkage, and its power is generated by a motor. The motor drives the four-bar linkage to move, realizing the opening and closing of the air guide plate.

[0004] However, in the existing air guide device, it is difficult to accurately control the air guide plate. For example, it may be very difficult to control the air guide plate to a certain position where it is half-open. Summary of the invention

[0005] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, there is provided an air guide device, including an air guide plate, a first connecting arm, a second connecting arm, and a transmission motor, wherein the air guide plate can be pivoted between a first station and a second station with a first pivot axis as an axis, the rotating shaft of the transmission motor can be pivoted around the second pivot axis, the first pivot axis is parallel to the second pivot axis, the first connecting arm and the second connecting arm are located in a pivot plane perpendicular to the first pivot axis and the second pivot axis, the first end of the first connecting arm can be pivotally connected to a predetermined position on the air guide plate, and the second end of the first connecting arm is connected to the second connecting arm The first end of the arm is pivotally connected, and the second end of the second connecting arm is connected to the rotating shaft of the transmission motor. When the air guide plate is in the first position, the air inlet corresponding to the air guide device is closed, and when the air guide plate is in the second position, the air inlet is opened. The air guide plate, the first connecting arm, the second connecting arm and the mechanism determined according to the first pivot axis and the second pivot axis constitute a plane hinge four-bar linkage, wherein the air guide plate is a first rocker of the plane hinge four-bar linkage, the first connecting arm is a connecting rod of the plane hinge four-bar linkage, the second connecting arm is a second rocker of the plane hinge four-bar linkage, and the mechanism is a frame of the plane hinge four-bar linkage, and the following formula is satisfied:

[0006] Wherein, β represents the rotation angle of the rotating shaft of the transmission motor when the air guide plate pivots from the first station to the second station, and n represents the rotation speed of the rotating shaft of the transmission motor.

[0007] It can be seen that by limiting the parameters of each component in the air guide device, the opening and closing speed of the air guide plate in the air guide device is slowed down, and correspondingly, the opening and closing time is prolonged. This is conducive to the precise control of the air guide plate in the air guide device. In particular, it helps to control the air guide plate to accurately stay in other stations between the first station and the second station. For manufacturers, this makes it possible to mass-produce products with higher consistency. For users, mechanical equipment has stronger reliability and better user experience.

[0008] Exemplarily, the parameter relationship of the planar hinge four-bar linkage is expressed by the following formula:

[0009]

[0010] Among them, L1 represents the distance between the predetermined position and the first pivot axis, L2 represents the distance between the pivot points of the first end and the second end of the first connecting arm, L3 represents the distance between the pivot points of the first end and the second end of the second connecting arm, D1 represents the length of the line segment between the intersection points of the first pivot axis and the second pivot axis with the pivot plane respectively, θ represents the angle between the line segment and the air guide plate when the air guide plate is in the first station, γ represents the angle between the line segment and the second connecting arm when the air guide plate is in the first station, and α represents the angle between the air guide plate in the first station and the air guide plate in the second station.

[0011] The above formula can obtain the parameter relationship of each component in the air guide device through simple calculation. Therefore, when designing the air guide device, the unknown parameters can be easily determined, reducing the difficulty of calculation.

[0012] Exemplarily, the angle α between the air guide plate at the first station and the air guide plate at the second station is 8 to 45 degrees.

[0013] The flip angle of the air guide plate is controlled between 8 and 45 degrees, which does not affect the human-computer interaction and can exhaust the oil smoke with maximum efficiency during the exhaust process, thereby improving the user experience.

[0014] By way of example, the rotational speed n is 2 to 8 rpm.

[0015] The transmission motor within this speed range is compact and can be installed in the range hood to reduce the space it occupies. At the same time, the transmission motor with this speed has low power consumption and can reduce energy consumption when the output power is constant. In addition, this type of motor has been widely used in many products, which can reduce the procurement cost of the product and further reduce the cost of the product.

[0016] Exemplarily, the second pivot axis is located above the second pivot axis, and the first pivot axis and the predetermined position are located on both sides of the first pivot axis, respectively.

[0017] This setting is not only conducive to applying power to the air guide plate and improving the working efficiency of the transmission motor, but also reasonably utilizes the space inside the range hood. In addition, this setting can also keep the transmission motor away from the air duct of the range hood. On the one hand, it can prevent the oil smoke from polluting the transmission motor and shortening its service life. On the other hand, the transmission motor is away from the air duct of the range hood and does not affect the exhaust efficiency of the range hood.

[0018] Exemplarily, the first pivot axis is located at a first end of the wind deflector, and / or the predetermined position is located at a second end of the wind deflector.

[0019] This arrangement makes it easier to apply force to the air deflector. According to the principle of lever, the farther the predetermined position is from the first pivot axis, the smaller the force the transmission motor can use to rotate the air deflector. Therefore, by setting the first pivot axis at the first end of the air deflector and the predetermined position at the second end of the air deflector, the transmission motor can control the opening and closing of the air deflector with the smallest force. In this way, a transmission motor with smaller power can be used, which can further reduce energy consumption, reduce the size of the transmission motor, and thus reduce the size of the air guide device.

[0020] According to a second aspect of the present invention, there is provided a range hood comprising any one of the above-mentioned air guiding devices.

[0021] Exemplarily, the range hood has two air guide plates.

[0022] The structure and control method of the air guide device are more suitable for a range hood with two air guide plates, or a double-wing range hood. The double-wing range hood can not only improve the exhaust efficiency of the range hood, but also control the opening and closing of the air guide plates in the air guide device according to the oil smoke generated by each burner of the stove, thereby reducing the power consumption of the range hood and extending the service life of the range hood. The double-wing range hood has higher requirements for accuracy because it controls the air guide plates on both sides separately. The structure and control method of the present invention can achieve better accurate control and control consistency, and is therefore more suitable for the double-wing range hood.

[0023] According to a third aspect of the present invention, a method for determining parameters of an air guide device is provided, wherein the air guide device comprises an air guide plate, a first connecting arm, a second connecting arm, and a transmission motor, wherein the air guide plate can be pivoted between a first station and a second station with a first pivot axis as an axis, the rotating shaft of the transmission motor can be pivoted around the second pivot axis, the first pivot axis is parallel to the second pivot axis, the first connecting arm and the second connecting arm are located in a pivot plane perpendicular to the first pivot axis and the second pivot axis, the first end of the first connecting arm can be pivotally connected to a predetermined position on the air guide plate, and the second end of the first connecting arm is connected to the second The first end of the connecting arm is pivotally connected, and the second end of the second connecting arm is connected to the rotating shaft of the transmission motor. When the air guide plate is in the first position, the air inlet corresponding to the air guide device is closed, and when the air guide plate is in the second position, the air inlet is opened. The method includes: according to the parameter relationship of the plane hinge four-bar linkage with the air guide plate as the first rocker, the first connecting arm as the connecting rod, the second connecting arm as the second rocker, and the mechanism determined according to the first pivot axis and the second pivot axis as the frame, the known parameters in the parameters of the plane hinge four-bar linkage and the following formula, determine the unknown parameters in the parameters of the plane hinge four-bar linkage, the formula is Wherein, β represents the rotation angle of the rotating shaft of the transmission motor when the air guide plate pivots from the first station to the second station, and n represents the rotation speed of the rotating shaft of the transmission motor.

[0024] In the above method, the unknown parameters are determined according to a specific formula using the known parameters of each component in the air guide device, so that the opening and closing speed of the air guide plate in the air guide device is slowed down, and the opening and closing time is correspondingly prolonged. This is conducive to the precise control of the air guide plate in the air guide device. In particular, it is helpful to control the air guide plate to accurately stay at other stations between the first station and the second station. For manufacturers, this makes it possible to mass-produce products with high consistency.

[0025] Exemplarily, the parameters of the planar hinge four-bar linkage include: a distance L1 from a predetermined position to a first pivot axis, a distance L2 between the pivot points of the first end and the second end of the first connecting arm, a distance L3 between the pivot points of the first end and the second end of the second connecting arm, a length D1 of a line segment between the intersection points of the first pivot axis and the second pivot axis with the pivot plane, an angle θ between the line segment and the wind deflector when the wind deflector is in the first position, an angle γ between the line segment and the second connecting arm when the wind deflector is in the first position, an angle α between the wind deflector in the first position and the wind deflector in the second position,

[0026] Among them, the parameter relationship of the plane hinge four-bar linkage is expressed by the following formula:

[0027]

[0028] Exemplarily, the known parameters of the planar hinge four-bar linkage include: the distance L1 from the predetermined position to the first pivot axis, the length D1 of the line segment between the intersection points of the first pivot axis and the second pivot axis with the pivot plane, the angle θ between the line segment and the air guide plate when the air guide plate is in the first position, and the rotation angle β of the shaft of the transmission motor during the process of pivoting the air guide plate from the first position to the second position.

[0029] For the design of the air guide device, it is generally necessary to consider the requirements of the mechanical equipment in which it is located. The above parameters are first determined based on the performance indicators of the mechanical equipment, and then the unknown parameters are determined based on these known parameters. Under the premise of meeting the overall requirements of the mechanical equipment, the best solution can be determined, thereby obtaining a mechanical equipment that can be precisely controlled and has a better user experience.

[0030] A series of simplified concepts are introduced in the summary of the invention, which will be further described in detail in the detailed description. The summary of the invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0031] The advantages and features of the present invention are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The following drawings of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0033] Figure 1 is a schematic diagram of an air guide device according to an exemplary embodiment of the present invention, wherein the air guide plate is in a first working position;

[0034] Figure 2 for Figure 1 Another schematic diagram of the air guide device shown, wherein the air guide plate is in the second working position; and

[0035] Figure 3 for Figure 1 Schematic diagram of the movement principle of the air guide device shown.

[0036] The above drawings include the following reference numerals:

[0037] 100, wind deflector; 110, first pivot axis; 101, predetermined position; 200, first connecting arm; 201, first end of the first connecting arm; 202, second end of the first connecting arm; 300, second connecting arm; 301, first end of the second connecting arm; 302, second end of the second connecting arm; 400, transmission motor; 410, second pivot axis; 500, air inlet. DETAILED DESCRIPTION

[0038] In the following description, a large amount of details are provided so that the present invention can be thoroughly understood. However, it will be appreciated by those skilled in the art that the following description only exemplarily illustrates a preferred embodiment of the present invention, and the present invention can be implemented without one or more such details. In addition, in order to avoid confusion with the present invention, some technical features well known in the art are not described in detail.

[0039] For the air guide device in the mechanical equipment, there is a demand to control it in other positions except the two extreme positions (closed and fully open). For example, for the range hood, when the range hood is stopped, the air guide plate in the air guide device closes the air inlet, and when the fan of the range hood is running at a high speed, the air guide plate can be in a fully open state to maximize the air volume at the air inlet. When the fan of the range hood is running at a low speed, it may be desirable for the air guide plate to be in a half-open state, that is, a specific position between the two extreme positions. Of course, according to actual needs, it may be expected that the air guide plate can reside in more positions, such as more than 3. However, in the current mechanical equipment, the opening and closing time of the air guide plate is generally only 1-2 seconds, and due to the time delay of the system, it is difficult to accurately control the half-open angle of the air guide plate. For manufacturers, the air guide plates in mass-produced mechanical equipment may have different half-open angles, and the consistency is poor. As a result, the user experience is greatly affected.

[0040] According to one aspect of the present invention, a wind guide device is provided. The wind guide device can be applied to various mechanical equipment, such as a range hood. Figure 1-3 As shown, the air guide device includes an air guide plate 100, a first connecting arm 200, a second connecting arm 300 and a transmission motor 400. The air guide plate 100 has at least a first position and a second position. When the air guide plate 100 is in the first position, the air inlet 500 corresponding to the air guide device is closed. When the air guide plate 100 is in the second position, the air inlet 500 is opened. Of course, the air guide plate 100 can also have other positions between the first position and the second position to present a semi-open state.

[0041] The wind deflector 100 can be pivoted between the first station and the second station with the first pivot axis 110 as the axis. The rotating shaft of the transmission motor 400 can be pivoted around the second pivot axis 410. The first pivot axis 110 is parallel to the second pivot axis 410. A first connecting arm 200 and a second connecting arm 300 are also provided between the wind deflector 100 and the transmission motor 400. The first connecting arm 200 and the second connecting arm 300 are located in a pivot plane perpendicular to the first pivot axis 110 and the second pivot axis 410. That is, it can be understood that the movement process of the wind deflector is in the same plane. The first end 201 of the first connecting arm is pivotally connected to a predetermined position 101 on the wind deflector 100. The predetermined position 101 can be the end point of the wind deflector 100 away from the first pivot axis 110. The second end 202 of the first connecting arm is pivotally connected to the first end 301 of the second connecting arm. The second end 302 of the second connecting arm is connected to the rotating shaft of the transmission motor 400.

[0042] In this way, the above-mentioned wind guide device constitutes a plane hinge four-bar linkage. The first pivot axis 110 and the second pivot axis 410 are fixed, that is, there is no spatial displacement. According to the first pivot axis 110 and the second pivot axis 410, the fixed component of the four-bar linkage, the frame, can be determined. The wind guide plate 100 and the second connecting arm 300 are directly connected to the frame, and can swing back and forth but cannot rotate a full circle, and can be used as the rocker of the four-bar linkage. Exemplarily, the wind guide plate 100 can be used as the first rocker of the plane hinge four-bar linkage. The second connecting arm 300 can be used as the second rocker of the plane hinge four-bar linkage. The first connecting arm 200 is not directly connected to the frame, but two rockers are connected at both ends, which can be used as a connecting rod between the two. Thus, the above-mentioned wind guide device constitutes a plane hinge four-bar linkage with a double rocker structure.

[0043] Based on this structure, the rotation of the rotating shaft of the transmission motor 400 can drive the second connecting arm 300 to rotate around the second end 302 within a certain angle, thereby driving the first connecting arm 200 to move. As the first connecting arm 200 moves, its first end can pull the predetermined position of the air deflector 100 to move upward or downward, that is, the air deflector 100 rotates clockwise or counterclockwise around the first pivot axis. In this way, the air deflector 100 opens or closes the air inlet.

[0044] According to an embodiment of the present invention, it is expected that the opening and closing time t of the air guide plate 100 is longer. For example, 3 seconds ≤ t ≤ 5 seconds. Assuming that the rotation angle of the shaft of the transmission motor 400 during the process of the air guide plate 100 pivoting from the first station to the second station is β degrees, and the speed of the shaft of the transmission motor 400 is n revolutions per minute, the following formula is obtained:

[0045]

[0046] Substituting this formula into the above inequality, we have the following relationship:

[0047]

[0048] In the above-mentioned air guide device, by limiting the parameters of each component in the air guide device, the opening and closing speed of the air guide plate 100 in the air guide device is slowed down, and correspondingly, the opening and closing time is prolonged. This is conducive to the precise control of the air guide plate 100 in the air guide device. In particular, it helps to control the air guide plate 100 to accurately stay in other stations between the first station and the second station. For manufacturers, this makes it possible to mass-produce products with higher consistency. For users, mechanical equipment has stronger reliability and better user experience.

[0049] Exemplarily, the second pivot axis 410 is located above the first pivot axis 110. The second pivot axis 410 and the predetermined position 101 are located on both sides of the first pivot axis 110, as shown in the figure. This arrangement is not only conducive to applying power to the air guide plate 100 and improving the working efficiency of the transmission motor 400, but also reasonably utilizes the space inside the range hood. In addition, this arrangement can also keep the transmission motor 400 away from the air duct of the range hood. On the one hand, it can prevent the oil smoke from polluting the transmission motor 400 and shorten its service life. On the other hand, the transmission motor is away from the air duct of the range hood and does not affect the exhaust efficiency of the range hood.

[0050] Exemplarily, the first pivot axis 110 is located at the first end of the wind deflector 100, and / or the predetermined position 101 is located at the second end of the wind deflector 100. That is, the first pivot axis 110 and the predetermined position 101 of the wind deflector 100 can be located at both ends of the wind deflector 100, respectively. This arrangement facilitates the application of force to the wind deflector 100. According to the principle of lever, the farther the predetermined position 101 is from the first pivot axis 110, the smaller the force that the transmission motor 400 can use to rotate the wind deflector 100. Therefore, setting the first pivot axis 110 at the first end of the wind deflector 100 and setting the predetermined position 101 at the second end of the wind deflector 100 can enable the transmission motor 400 to control the opening and closing of the wind deflector 100 with the minimum force. In this way, a transmission motor 400 with less power can be used, which can further reduce energy consumption, reduce the size of the transmission motor, and thus reduce the size of the wind guide device.

[0051] Exemplarily, the parameter relationship of the above-mentioned planar hinge four-bar linkage is expressed by the following formula:

[0052]

[0053] refer to Figure 3, it can be set that the distance between the predetermined position 101 and the first pivot axis 110 is L1. The distance between the pivot point of the first end 201 of the first connecting arm and the second end 202 of the first connecting arm is L2. The distance between the pivot point of the first end 301 of the second connecting arm and the second end 302 of the second connecting arm is L3. The length of the line segment between the intersection of the first pivot axis 110 and the second pivot axis 410 with the pivot plane is D1, that is, the length of the line segment between the rotation axis of the air deflector 100 and the rotation axis of the transmission motor 400 is D1. When the air deflector 100 is in the first station, the angle between the above line segment and the air deflector 100 is θ. When the air deflector 100 is in the first station, the angle between the above line segment and the second connecting arm 300 is γ. The angle between the air deflector 100 in the first station and the air deflector 100 in the second station is α, that is, the maximum flip angle of the air deflector 100.

[0054] The above formula can obtain the parameter relationship of each component in the air guide device through simple calculation. Therefore, when designing the air guide device, the unknown parameters can be easily determined, reducing the difficulty of calculation.

[0055] Preferably, the speed n of the transmission motor 400 can be 2 to 8 rpm. If the opening and closing time of the air guide plate 100 is 5 seconds and the speed n is 2 rpm, the rotation angle of the second connecting arm 300 driven by the transmission motor 400 is 0≤β≤60, in degrees, which can meet actual needs. The transmission motor within this speed range is compact and can be installed in the range hood to reduce the space it occupies. At the same time, the transmission motor of this speed has low power consumption and can reduce energy consumption when the output power is constant. In addition, this type of motor has been widely used in multiple products, which can reduce the procurement cost of the product and further reduce the cost of the product.

[0056] For example, the maximum flip angle α of the air deflector 100 may be 8 to 45 degrees. In practical applications, if the maximum flip angle α of the air deflector 100 is less than 8 degrees, the corresponding air inlet is very narrow and the air intake may be insufficient; if α is greater than 45 degrees, it may cause structural difficulties in the control operation of the four-link, making it difficult to obtain smooth control operation.

[0057] In addition, for the air guide device used in the range hood, since the front panel of the range hood usually has a certain inclination angle when the range hood is installed and used, it prevents the user from bumping his head during use. The end close to the user is higher than the end far from the user, so the air guide plate 100 will have an initial angle. According to ergonomic design, the angle should be greater than 8 degrees. When the range hood starts to exhaust smoke, the air guide plate 100 opens. In order to allow the smoke to be exhausted by the range hood with the greatest efficiency, the angle of the air guide plate 100 is not the larger the better, but it is best to be at an angle with the path of the rising smoke. According to experience, the angle should be less than 45 degrees.

[0058] It can be seen that the flip angle of the air guide plate 100 is controlled between 8 degrees and 45 degrees, which can not only not affect the human-computer interaction, but also can exhaust the oil smoke with the highest efficiency during the smoke exhaust process, thereby improving the user experience.

[0059] According to a second aspect of the present invention, a range hood is provided, comprising any of the above-mentioned air guide devices. The air guide device may include an air guide plate 100, a first connecting arm 200, a second connecting arm 300 and a transmission motor 400. The above components may enable the air guide device to form a planar articulated four-bar linkage. The transmission motor 400 may enable the first connecting arm 200 to rotate, drive the second connecting arm 300 to move, thereby driving the air guide plate 100 to rotate through the second connecting arm 300, and realizing the control of opening and closing of the air inlet 500.

[0060] Exemplarily, the range hood may have two air guide plates 100. According to the mechanical structure with two air guide plates 100, the range hood may be referred to as a double-wing range hood. The double-wing range hood may have two air inlets corresponding to the burners of the stove, and an air guide device is provided at each of the two air inlets. The two air guide devices may be controlled separately so that the oil smoke generated during cooking can be sucked in and discharged by the range hood in an optimal path. The smoke exhaust efficiency of the range hood may be improved. Moreover, the opening and closing of the air guide plates 100 in the air guide device may be controlled separately according to the oil smoke generated by each burner of the stove, so as to reduce the power consumption of the range hood and extend the service life of the range hood. The double-wing range hood has higher requirements for accuracy because it controls the air guide plates on both sides separately. The structure and control method of the present invention can achieve better precision control and control consistency, and is therefore more suitable for double-wing range hoods.

[0061] According to a third aspect of the present invention, a method for determining parameters of an air guide device is provided. The air guide device includes an air guide plate 100, a first connecting arm 200, a second connecting arm 300, and a transmission motor 400. The air guide plate 100 can be pivoted between a first station and a second station with a first pivot axis 110 as an axis. The rotating shaft of the transmission motor 400 can be pivoted around a second pivot axis 410. The first pivot axis 110 is parallel to the second pivot axis 410. The first connecting arm 200 and the second connecting arm 300 are located in a pivot plane perpendicular to the first pivot axis 110 and the second pivot axis 410. The first end 201 of the first connecting arm is pivotally connected to a predetermined position 101 on the air guide plate 100. The second end 202 of the first connecting arm is pivotally connected to the first end 301 of the second connecting arm. The second end 302 of the second connecting arm is connected to the rotating shaft of the transmission motor 400. When the air guide plate 100 is in the first station, the air inlet 500 corresponding to the air guide device is closed. When the air guide plate 100 is in the second position, the air inlet 500 is opened.

[0062] The method comprises: determining unknown parameters in the parameters of the plane hinge four-bar linkage according to the parameter relationship of the plane hinge four-bar linkage with the air deflector 100 as the first rocker, the first connecting arm 200 as the connecting rod, the second connecting arm 300 as the second rocker and the mechanism determined according to the first pivot axis 110 and the second pivot axis 410 as the frame, the known parameters in the parameters of the plane hinge four-bar linkage and the following formula, wherein the formula is Wherein, β represents the rotation angle of the rotating shaft of the transmission motor 400 when the air guide plate 100 pivots from the first station to the second station, and n represents the rotation speed of the rotating shaft of the transmission motor 400 .

[0063] In the above method, the unknown parameters are determined according to a specific formula using the known parameters of each component in the wind guide device, so that the opening and closing speed of the wind guide plate 100 in the wind guide device is slowed down, and correspondingly, the opening and closing time is prolonged. This is conducive to the precise control of the wind guide plate 100 in the wind guide device. In particular, it is helpful to control the wind guide plate 100 to accurately stay in other stations between the first station and the second station. For manufacturers, this makes it possible to mass-produce products with high consistency.

[0064] Exemplarily, the parameter relationship of the above-mentioned planar hinge four-bar linkage is expressed by the following formula:

[0065]

[0066] The parameters of the planar hinge four-bar linkage include: the distance L1 between the predetermined position 101 and the first pivot axis 110, the distance L2 between the pivot points of the first end 201 of the first connecting arm and the second end 202 of the first connecting arm, the distance L3 between the pivot points of the first end 301 of the second connecting arm and the second end 302 of the second connecting arm, the length D1 of the line segment between the intersection points of the first pivot axis 110 and the second pivot axis 410 with the pivot plane respectively, the angle θ between the above line segment and the wind deflector 100 when the wind deflector 100 is in the first position, the angle γ between the above line segment and the second connecting arm 300 when the wind deflector 100 is in the first position, and the angle α between the wind deflector 100 in the first position and the wind deflector 100 in the second position, that is, the maximum flipping angle of the wind deflector 100.

[0067] Furthermore, the above-mentioned known parameters include: the distance L1 between the predetermined position 101 and the first pivot axis 110, the length D1 of the line segment between the intersection points of the first pivot axis 110 and the second pivot axis 410 with the pivot plane respectively, the angle θ between the line segment and the air guide plate 100 when the air guide plate 100 is in the first station, and the rotation angle β of the shaft of the transmission motor 400 during the process of the air guide plate 100 pivoting from the first station to the second station.

[0068] For the design of the air guide device, it is generally necessary to consider the requirements of the mechanical equipment in which it is located. The above parameters are first determined based on the performance indicators of the mechanical equipment, and then the unknown parameters are determined based on these known parameters. Under the premise of meeting the overall requirements of the mechanical equipment, the best solution can be determined, thereby obtaining a mechanical equipment that can be precisely controlled and has a better user experience.

[0069] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by directional words such as "front", "back", "up", "down", "left", "right", "lateral", "vertical", "vertical", "horizontal", "top", "bottom", etc. is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words 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, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside" and "outside" refer to the inside and outside relative to the contour of each component itself.

[0070] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between one or more components or features shown in the figure and other components or features. It should be understood that spatially relative terms include not only the orientation of the components as described in the figure, but also different orientations in use or operation. For example, if the components in the accompanying drawings are inverted as a whole, the components "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Therefore, the exemplary term "above" may include both "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this article is intended to include all of these situations.

[0071] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, parts, components and / or combinations thereof.

[0072] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0073] The present invention has been described by the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the present invention to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the present invention is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of the protection claimed by the present invention. The protection scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A wind guide device, comprising a wind guide plate (100), a first connecting arm (200), a second connecting arm (300), and a transmission motor (400), wherein the wind guide plate is pivotable between a first station and a second station with a first pivot axis (110) as an axis, the rotating shaft of the transmission motor is pivotable around a second pivot axis (410), the first pivot axis is parallel to the second pivot axis, the first connecting arm and the second connecting arm are located in a pivot plane perpendicular to the first pivot axis and the second pivot axis, the first end (201) of the first connecting arm is pivotably connected to a predetermined position (101) on the wind guide plate, the second end (202) of the first connecting arm is pivotally connected to the first end (301) of the second connecting arm, the second end (302) of the second connecting arm is connected to the rotating shaft of the transmission motor, when the wind guide plate is in the first station, the air inlet (500) corresponding to the wind guide device is closed, and when the wind guide plate is in the second station, the air inlet is opened, characterized in that The air guide plate, the first connecting arm, the second connecting arm, and a mechanism determined according to the first pivot axis and the second pivot axis constitute a plane hinge four-bar linkage, wherein the air guide plate is a first rocker of the plane hinge four-bar linkage, the first connecting arm is a connecting rod of the plane hinge four-bar linkage, the second connecting arm is a second rocker of the plane hinge four-bar linkage, and the mechanism is a frame of the plane hinge four-bar linkage, and the following formula is satisfied: Wherein, β represents the rotation angle of the rotating shaft of the transmission motor when the air guide plate is pivoted from the first station to the second station, and n represents the rotation speed of the rotating shaft of the transmission motor.

2. The air guide device according to claim 1, characterized in that: The parameter relationship of the planar hinge four-bar linkage is expressed by the following formula: Wherein, L1 represents the distance between the predetermined position (101) and the first pivot axis (110), L2 represents the distance between the pivot points of the first end (201) and the second end (202) of the first connecting arm (200), L3 represents the distance between the pivot points of the first end (301) and the second end (302) of the second connecting arm (300), D1 represents the length of the line segment between the intersection points of the first pivot axis and the second pivot axis (410) with the pivot plane, respectively, θ represents the angle between the line segment and the air guide plate when the air guide plate (100) is in the first working position, γ represents the angle between the line segment and the second connecting arm when the air guide plate is in the first working position, α represents the angle between the air guide plate at the first station and the air guide plate at the second station.

3. The air guide device according to claim 2, characterized in that: The included angle α between the air guide plate (100) at the first workstation and the air guide plate at the second workstation is 8 to 45 degrees.

4. The air guide device according to claim 1, characterized in that: The rotation speed n is 2 to 8 rpm.

5. The air guide device according to claim 1, characterized in that: The second pivot axis (410) is located above the first pivot axis (110), and the second pivot axis and the predetermined position (101) are respectively located on both sides of the first pivot axis.

6. The air guide device according to claim 1, characterized in that: The first pivot axis (110) is located at a first end of the wind deflector (100), and / or the predetermined position (101) is located at a second end of the wind deflector.

7. A range hood, characterized in that: It comprises the wind guiding device as described in any one of claims 1 to 6.

8. The range hood according to claim 7, characterized in that: The range hood has two air guide plates (100).

9. A method for determining parameters of an air guiding device, characterized in that: The wind guide device comprises a wind guide plate (100), a first connecting arm (200), a second connecting arm (300), and a transmission motor (400); the wind guide plate is pivotable between a first station and a second station with a first pivot axis (110) as an axis; the rotation shaft of the transmission motor is pivotable around a second pivot axis (410); the first pivot axis is parallel to the second pivot axis; the first connecting arm and the second connecting arm are located in a pivot plane perpendicular to the first pivot axis and the second pivot axis; the first end (201) of the first connecting arm is pivotably connected to a predetermined position (101) on the wind guide plate; the second end (202) of the first connecting arm is pivotably connected to the first end (301) of the second connecting arm; the second end (302) of the second connecting arm is connected to the rotation shaft of the transmission motor; when the wind guide plate is in the first station, the air inlet (500) corresponding to the wind guide device is closed; when the wind guide plate is in the second station, the air inlet is opened; The method comprises: According to the parameter relationship of a planar hinge four-bar linkage with the air guide plate as the first rocker, the first connecting arm as the connecting rod, the second connecting arm as the second rocker, and the mechanism determined according to the first pivot axis and the second pivot axis as the frame, the known parameters in the parameters of the planar hinge four-bar linkage and the following formula, the unknown parameters in the parameters of the planar hinge four-bar linkage are determined, The formula is Wherein, β represents the rotation angle of the rotating shaft of the transmission motor when the air guide plate is pivoted from the first station to the second station, and n represents the rotation speed of the rotating shaft of the transmission motor.

10. The method according to claim 9, characterized in that The parameters of the planar hinge four-bar linkage include: a distance L1 between the predetermined position (101) and the first pivot axis (110), The distance L2 between the pivot points of the first end (201) and the second end (202) of the first connecting arm (200), The distance L3 between the pivot points of the first end (301) and the second end (302) of the second connecting arm (300), The length D1 of the line segment between the intersection points of the first pivot axis and the second pivot axis (410) with the pivot plane, respectively, When the air guide plate (100) is in the first working position, the angle θ between the line segment and the air guide plate is When the air guide plate is in the first working position, the angle γ between the line segment and the second connecting arm is The angle α between the air guide plate at the first station and the air guide plate at the second station, The parameter relationship of the planar hinge four-bar linkage is expressed by the following formula:

11. The method according to claim 9 or 10, characterized in that The known parameters of the planar hinge four-bar linkage include: a distance L1 between the predetermined position (101) and the first pivot axis (110), The length D1 of the line segment between the intersection points of the first pivot axis and the second pivot axis (410) with the pivot plane, respectively, When the air guide plate (100) is in the first working position, the angle θ between the line segment and the air guide plate, and The rotation angle β of the rotating shaft of the transmission motor (400) during the process of the air guide plate pivoting from the first station to the second station.

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