Range hood transition gear setting method and device, range hood transition gear control method and device, controller and range hood

Abstract

The invention relates to the technical field of smart home, and discloses a range hood transition gear setting method and device, a range hood transition gear control method and device, a controller and a range hood. The range hood transition gear setting method comprises the steps that initial current is adjusted, initial current meeting preset conditions serves as transition current of a transition gear, and a first rotating speed threshold value is obtained according to a first rotating speed and a second rotating speed; and the first rotating speed threshold value is used as a judgment threshold value of the first static pressure section and the transition gear. And according to the third rotating speed and the fourth rotating speed, a second rotating speed threshold value is obtained, and the second rotating speed threshold value serves as a judgment threshold value of the second static pressure section and the transition gear. According to the method, the initial current is adjusted until the preset condition is met, so that the transition gear of the range hood is determined, and the current value corresponding to the transition gear is determined. When the range hood needs to adjust the gear, the current is firstly controlled to be the current of the transition gear, and then the range hood is adjusted to the target gear, so that the stable transition of the current is realized, the noise influence caused by mismatching of the current and the rotating speed is reduced, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the field of control technology, and particularly to a setting, control method, device, controller and range hood for a transition gear of a range hood. Background Art

[0002] The key to the air volume performance of a range hood lies in how to adjust the speed of the fan to ensure the oil fume suction ability of the range hood when the flue of the fan is in different static pressure environments.

[0003] In the related art, the static pressure environment is usually divided into three static pressure segments, namely a high static pressure segment, a medium static pressure segment and a low static pressure segment. The current static pressure environment of the fan is identified through the current speed fed back by the fan, and then the working current of the fan is adjusted to the working current corresponding to the identified static pressure environment, so that the working current output to the fan matches the current static pressure environment, thereby ensuring the oil fume suction ability of the range hood.

[0004] However, in the process of transitioning between adjacent static pressure segments of the existing range hood, the current increase is small, and the user's perception of the power increase is not obvious, affecting the user experience. If the difference in the working current between two adjacent static pressure segments is increased, there may be a problem that the switching is not successful when switching between two adjacent static pressure segments. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a setting, control method, device, controller and range hood for a transition gear of a range hood, which effectively solves the problem that the switching between adjacent static pressure segments is not successful.

[0006] The above technical problem is solved by the following technical solutions:

[0007] A method for setting a transition gear of a range hood, the method comprising:

[0008] Adjust the initial current, and use the initial current that meets the preset conditions as the transition current of the transition gear. The preset conditions are at least that the first speed is greater than the second speed and the fourth speed is greater than the third speed, where the first speed is the speed of the fan when the fan is at the initial static pressure and the working current is the second current, and the second current is the matching working current of the fan in the first static pressure segment; the second speed is the speed of the fan when the fan is in the first static pressure segment and the working current is the initial current; the third speed is the speed of the fan when the fan is in the second static pressure segment and the working current is the initial current; the fourth speed is the speed of the fan when the fan is at the initial static pressure and the working current is the first current, and the first current is the matching working current of the fan in the second static pressure segment;

[0009] A preset first static pressure is used to characterize the critical static pressure point for lifting from the first static pressure section to the second static pressure section, and a preset second static pressure is used to characterize the critical static pressure point for decreasing from the second static pressure section to the first static pressure section. The preset first static pressure is less than the preset second static pressure, and the first static pressure section and the second static pressure section are adjacent;

[0010] The initial current is used to characterize the preset transition current of the transition gear, and the initial static pressure is used to characterize the static pressure of the fan in the transition gear. The initial static pressure is greater than the preset first static pressure and less than the preset second static pressure;

[0011] According to the first rotational speed and the second rotational speed, a first rotational speed threshold is obtained, and the first rotational speed threshold is used as the judgment threshold between the first static pressure section and the transition gear. Among them, the first rotational speed threshold is between the first rotational speed and the second rotational speed;

[0012] According to the third rotational speed and the fourth rotational speed, a second rotational speed threshold is obtained, and the second rotational speed threshold is used as the judgment threshold between the second static pressure section and the transition gear. Among them, the second rotational speed threshold is between the third rotational speed and the fourth rotational speed.

[0013] Compared with the background technology, the method for setting the transition gear of the range hood in the present invention has the beneficial effects as follows: By adjusting the initial current until the preset conditions are met, the transition gear of the range hood and the transition current of the transition gear are determined. The first rotational speed threshold and the second rotational speed threshold are respectively between the first rotational speed and the second rotational speed, and between the third rotational speed and the fourth rotational speed, and operate with the corresponding transition current in the transition gear. As an intermediate state, the transition gear can ensure a smooth gear shift when the rotational speed reaches the threshold. Taking the initial current that meets the preset conditions as the transition current of the transition gear, the transition current is between the matching currents of the two static pressure sections, and can be used as an intermediate state of the current when the static pressure changes, avoiding the influence of non-matching rotational speeds caused by the direct switching of the current between the first current and the second current on the gear shift.

[0014] In one embodiment, the adjusting the initial current and taking the initial current that meets the preset conditions as the transition current of the transition gear includes:

[0015] Recording the first rotational speed when the fan operates at the second current with the initial static pressure and the fourth rotational speed when the fan operates at the first current with the initial static pressure;

[0016] Controlling the fan to operate in a first preset state, where the first preset state includes a static pressure of the first static pressure section and a working current of the initial current;

[0017] Controlling the fan to operate in a second preset state, where the second preset state includes a static pressure of the second static pressure section and a working current of the initial current;

[0018] Adjust the initial current of the first preset state and the initial current of the second preset state, and detect the second rotation speed of the fan in the first preset state and the third rotation speed of the fan operating in the second preset state until the first rotation speed, the second rotation speed, the third rotation speed, and the fourth rotation speed meet the preset conditions, and mark the initial current when the preset conditions are met as the transition current of the transition gear.

[0019] In one embodiment, the preset conditions include that the first difference between the first rotation speed and the second rotation speed is greater than the first rotation speed difference, and the second difference between the third rotation speed and the fourth rotation speed is greater than the second rotation speed difference.

[0020] In one embodiment, obtaining the first rotation speed threshold according to the first rotation speed and the second rotation speed includes:

[0021] Calculating the average value of the first rotation speed and the second rotation speed when the preset conditions are met to obtain the first rotation speed threshold.

[0022] In one embodiment, obtaining the second rotation speed threshold according to the third rotation speed and the fourth rotation speed includes:

[0023] Calculating the average value of the third rotation speed and the fourth rotation speed when the preset conditions are met to obtain the second rotation speed threshold.

[0024] In one embodiment, the first current is greater than the second current, and the difference between the first current and the second current is not less than 0.5 A.

[0025] A control method for a range hood, the range hood is provided with a transition gear, the transition gear is set based on the above-mentioned setting method of the range hood transition gear, and the control method includes:

[0026] Obtain the rotation speed of the motor in real time;

[0027] When the rotation speed increases to be greater than the first rotation speed threshold, adjust the working current of the fan from the second current to the transition current;

[0028] When the rotation speed increases to be greater than the second rotation speed threshold, adjust the working current of the fan from the transition current to the first current;

[0029] When the rotation speed decreases to be less than the first rotation speed threshold, adjust the working current of the fan from the transition current to the second current;

[0030] When the rotation speed decreases to be less than the second rotation speed threshold, adjust the working current of the fan from the first current to the transition current.

[0031] A device for setting a transition gear of a range hood, the device comprising:

[0032] A current adjustment module for adjusting an initial current and taking the initial current that meets a preset condition as a transition current of the transition gear. The preset condition is at least that a first rotational speed is greater than a second rotational speed and a fourth rotational speed is greater than a third rotational speed. Wherein, the first rotational speed is the rotational speed when the blower is at an initial static pressure and the working current is a second current, and the second current is a matching working current of the blower at a first static pressure section; the second rotational speed is the rotational speed when the blower is at the first static pressure section and the working current is the initial current; the third rotational speed is the rotational speed when the blower is at a second static pressure section and the working current is the initial current; the fourth rotational speed is the rotational speed when the blower is at an initial static pressure and the working current is a first current, and the first current is a matching working current of the blower at the second static pressure section;

[0033] The preset first static pressure is used to represent a critical static pressure point for lifting from the first static pressure section to the second static pressure section, and the preset second static pressure is used to represent a critical static pressure point for decreasing from the second static pressure section to the first static pressure section. The preset first static pressure is less than the preset second static pressure, and the first static pressure section and the second static pressure section are adjacent;

[0034] The initial current is used to represent a preset transition current of the transition gear, and the initial static pressure is used to represent the static pressure of the blower at the transition gear. The initial static pressure is greater than the preset first static pressure and less than the preset second static pressure;

[0035] A first threshold determination module for obtaining a first rotational speed threshold according to the first rotational speed and the second rotational speed, and taking the first rotational speed threshold as a judgment threshold between the first static pressure section and the transition gear. Wherein, the first rotational speed threshold is between the first rotational speed and the second rotational speed;

[0036] A second threshold determination module for obtaining a second rotational speed threshold according to the third rotational speed and the fourth rotational speed, and taking the second rotational speed threshold as a judgment threshold between the second static pressure section and the transition gear. Wherein, the second rotational speed threshold is between the third rotational speed and the fourth rotational speed.

[0037] A controller of a range hood, the controller comprising:

[0038] A memory and a processor, which are communicatively connected to each other. The memory stores computer instructions, and the processor executes the computer instructions to execute the above-mentioned method for setting the transition gear of the range hood and / or the control method of the range hood.

[0039] A range hood, the range hood comprising the above-mentioned controller. Description of the Drawings

[0040] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0041] Figure 1 It is a flowchart of the method for setting the transition gear of the range hood in the embodiment of the present invention;

[0042] Figure 2 It is a flowchart of the control method of the range hood in the embodiment of the present invention;

[0043] Figure 3 It is a device for setting the transition gear of the range hood in the embodiment of the present invention;

[0044] Figure 4 It is a schematic structural diagram of the controller of the range hood in the embodiment of the present invention. Specific Embodiments

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0046] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0047] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0048] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0049] The main parameters of the air volume performance of the range hood include the maximum static pressure, the working air volume, the maximum air volume, etc. These parameters respectively correspond to the air volume control of the fan of the range hood under different static pressure conditions. The current static pressure environment of the fan is identified through the currently fed-back rotational speed of the fan, and then the working current of the fan is adjusted to the working current corresponding to the identified static pressure environment, so that the working current output to the fan is adapted to the current static pressure environment. When the fan operates in the low static pressure section (such as a well-ventilated environment), in order to pursue the maximum air volume, it is necessary to maintain a high current and high power, resulting in a significant increase in noise and affecting the user experience; at the same time, in the medium and high static pressure sections (when there is a fume exhaust resistance), the power response lags and the increase amplitude is insufficient, resulting in a decrease in the fume exhaust efficiency. Specifically, the power adjustment is non-linear when the static pressure state switches, the cruise supercharging effect is poor, and the current and rotational speed cannot be intelligently matched according to the real-time duct resistance, resulting in the inability to achieve dynamic balance of energy consumption and noise in high and low pressure scenarios. Based on this, an embodiment of the present invention provides a method for setting the transition gear of a range hood.

[0050] According to an embodiment of the present invention, there is provided a method for setting the transition gear of a range hood, Figure 1 is a flowchart of the method for setting the transition gear of a range hood according to an embodiment of the present invention, as Figure 1 shown, this process includes the following steps:

[0051] Step S101, adjust the initial current, and use the initial current that meets the preset conditions as the transition current of the transition gear.

[0052] The preset conditions are at least that the first rotational speed is greater than the second rotational speed and the fourth rotational speed is greater than the third rotational speed, where the first rotational speed is the rotational speed of the fan when it is at the initial static pressure and the working current is the second current, and the second current is the matching working current of the fan in the first static pressure section. The second rotational speed is the rotational speed of the fan when it is in the first static pressure section and the working current is the initial current. The third rotational speed is the rotational speed of the fan when it is in the second static pressure section and the working current is the initial current. The fourth rotational speed is the rotational speed of the fan when it is at the initial static pressure and the working current is the first current, and the first current is the matching working current of the fan in the second static pressure section. Among them, the rotational speed of the motor is characterized by the quadrature axis current component, and the unit of the current is ampere.

[0053] The preset first static pressure is used to characterize the critical static pressure point for lifting from the first static pressure section to the second static pressure section, and the preset second static pressure is used to characterize the critical static pressure point for decreasing from the second static pressure section to the first static pressure section. The preset first static pressure is less than the preset second static pressure, and the first static pressure section and the second static pressure section are adjacent. The initial current is used to characterize the preset transition current for the transition gear, and the initial static pressure is used to characterize the static pressure of the fan at the transition gear. The initial static pressure is greater than the preset first static pressure and less than the preset second static pressure.

[0054] The range hood is provided with multiple static pressure sections, including a first static pressure section and a second static pressure section. The first static pressure section is less than the second static pressure section and they are adjacent. The preset first static pressure is the static pressure value at the transition area between the first static pressure section and the second static pressure section close to the first static pressure section, and the preset second static pressure is the static pressure value at the transition area between the second static pressure section and the first static pressure section close to the second static pressure section. The working current of the range hood when it is in the first static pressure section is the second current, and the working current when it is in the second static pressure section is the first current.

[0055] As an example, the first static pressure section is the low-pressure section, and the second static pressure section is the medium-pressure section. The preset first static pressure is the static pressure value at the transition area between the low-pressure section and the medium-pressure section close to the low-pressure section, and the preset second static pressure is the static pressure value at the transition area between the medium-pressure section and the low-pressure section close to the medium-pressure section. Both the preset first static pressure and the preset second static pressure are static pressure values determined through experimental tests. When the range hood is operating, if the static pressure rises from less than the preset first static pressure to greater than the preset first static pressure, the range hood will increase the current to increase the power, and the range hood will enter the second static pressure section from the first static pressure section. If the static pressure drops from greater than the preset second static pressure to less than the preset second static pressure, the range hood will decrease the current to reduce the power, and the range hood will enter the first static pressure section from the second static pressure section. When the range hood is in the first static pressure section, the working current is the second current. If the exhaust resistance increases during the working process, the current needs to be increased. The first current is greater than the second current. Since there is a matching requirement between the working current and the motor speed of the fan, and the speed matching ranges for different currents are different, if the difference between the first current and the second current is large, it will cause the speed and current to be unable to match when the static pressure switches between adjacent static pressure sections.

[0056] Before adjusting the initial current, the initial value of the initial current and the initial value of the initial static pressure are preset in advance. The initial current determined after adjustment is used as the preset transition current for the transition gear, and the transition gear is the gear passed through when the range hood switches between the first static pressure section and the second static pressure section.

[0057] The initial value of the initial current is less than the first current, and the initial value of the initial static pressure is less than the preset second static pressure. As an example, the initial value of the initial current can be 0.8 times the first current, and the initial value of the initial static pressure can be 1 / 4 of the preset second static pressure. By adjusting the magnitude of the initial current until the first rotational speed, the second rotational speed, the third rotational speed, and the fourth rotational speed meet the preset conditions, where the preset conditions include that the first rotational speed is greater than the second rotational speed and the fourth rotational speed is greater than the third rotational speed. The initial current that meets the preset conditions is used as the current value corresponding to the transition gear.

[0058] The first rotational speed is the rotational speed of the fan when the initial static pressure is applied and the working current is the second current. The second rotational speed is the rotational speed of the fan when the first static pressure section (e.g., 0 PA) is applied and the working current is the initial current. The third rotational speed is the rotational speed of the fan when the second static pressure section is applied and the working current is the initial current. The fourth rotational speed is the rotational speed of the fan when the initial static pressure is applied and the working current is the first current.

[0059] In some alternative embodiments, the difference between the first current and the second current is at least greater than the preset current threshold. The first current is greater than the second current, and the difference between the first current and the second current is not less than 0.5 A.

[0060] Step S102: Obtain a first rotational speed threshold based on the first rotational speed and the second rotational speed, and use the first rotational speed threshold as the judgment threshold between the first static pressure section and the transition gear.

[0061] The first rotational speed threshold is calculated by combining the first rotational speed and the second rotational speed. Specifically, a weighted average or a dynamic difference can be calculated by combining the first rotational speed and the second rotational speed to obtain the first rotational speed threshold. The first rotational speed threshold is used to determine whether to control the working current of the fan to switch from the second current to the initial current, so as to achieve a natural switch from the first static pressure section to the transition gear. The first rotational speed threshold is between the first rotational speed and the second rotational speed.

[0062] Step S103: Obtain a second rotational speed threshold based on the third rotational speed and the fourth rotational speed, and use the second rotational speed threshold as the judgment threshold between the second static pressure section and the transition gear.

[0063] The second rotational speed threshold is calculated by combining the third rotational speed and the fourth rotational speed. Specifically, a weighted average or a dynamic difference can be calculated by combining the third rotational speed and the fourth rotational speed to obtain the second rotational speed threshold. The second rotational speed threshold is used to determine whether to control the working current of the fan to switch from the initial current to the first current, so as to achieve a natural switch from the transition gear to the second static pressure section. The second rotational speed threshold is greater than the first rotational speed threshold. The second rotational speed threshold is between the third rotational speed and the fourth rotational speed.

[0064] The method for setting the transition gear of a range hood provided by the embodiment of the present invention includes adjusting the initial current, using the initial current that meets the preset conditions as the transition current of the transition gear, obtaining the first speed threshold according to the first speed and the second speed, and using the first speed threshold as the judgment threshold between the first static pressure section and the transition gear. According to the third speed and the fourth speed, obtain the second speed threshold, and use the second speed threshold as the judgment threshold between the second static pressure section and the transition gear. This method determines the transition gear of the range hood by adjusting the initial current until the preset conditions are met, and determines the current value corresponding to the transition gear, using the motor speed of the fan in different scenarios as the threshold for adjusting the gear. When the range hood needs to adjust the gear, first adjust to the transition gear, and then adjust to the target gear to achieve a smooth transition of the current, reduce the noise impact caused by the mismatch between the current and the speed, and improve the user experience.

[0065] According to an embodiment of the present invention, there is provided a method for setting the transition gear of a range hood, the method including the following steps:

[0066] Step S201, adjust the initial current, and use the initial current that meets the preset conditions as the transition current of the transition gear.

[0067] Specifically, step S201 includes:

[0068] Step S2011, record the first speed of the fan when running at the second current with the initial static pressure and the fourth speed of the fan when running at the first current with the initial static pressure.

[0069] First, set the initial value of the initial static pressure, and record the first speed of the motor when running at the second current and the fourth speed when running at the first current when the fan is at the initial value of the initial static pressure.

[0070] Step S2012, control the fan to run in the first preset state, where the first preset state includes a static pressure of the first static pressure section and a working current of the initial current.

[0071] Control the fan to run with a static pressure of the first static pressure section and a working current of the initial current, and record the motor speed (second speed) in this state.

[0072] Step S2013, control the fan to run in the second preset state, where the second preset state includes a static pressure of the second static pressure section and a working current of the initial current.

[0073] Control the fan to run with a static pressure of the second static pressure section and a working current of the initial current, and record the motor speed (third speed) in this state.

[0074] In step S2014, adjust the initial current in the first preset state and the initial current in the second preset state, and detect the second rotational speed of the fan in the first preset state and the third rotational speed of the fan operating in the second preset state until the first rotational speed, the second rotational speed, the third rotational speed, and the fourth rotational speed meet the preset conditions. Mark the initial current when the preset conditions are met as the transition current of the transition gear.

[0075] Compare the magnitudes of the first rotational speed and the second rotational speed, and the magnitudes of the third rotational speed and the fourth rotational speed respectively, and determine whether the preset conditions are met, that is, the first rotational speed is greater than the second rotational speed and the fourth rotational speed is greater than the third rotational speed. If the conditions are met, use the current corresponding initial current value as the transition current of the transition gear. If the preset conditions are not met, adjust the initial current value until the rotational speeds meet the preset conditions.

[0076] In some alternative embodiments, the preset conditions include that the first difference between the first rotational speed and the second rotational speed is greater than the first rotational speed difference, and the second difference between the third rotational speed and the fourth rotational speed is greater than the second rotational speed difference.

[0077] The first rotational speed difference and the second rotational speed difference can be the same or different, and the specific magnitudes are set according to the operating parameters of the motor. By setting the difference in rotational speeds to be greater than a certain value, the current switching between the transition gear and the target gear is achieved, thereby ensuring that the differences in the motor and the entire range hood do not affect the entire switching process.

[0078] In step S202, obtain a first rotational speed threshold based on the first rotational speed and the second rotational speed, and use the first rotational speed threshold as the judgment threshold between the first static pressure section and the transition gear.

[0079] Specifically, step S202 includes: calculating the average value of the first rotational speed and the second rotational speed when the preset conditions are met to obtain the first rotational speed threshold.

[0080] The first rotational speed is the rotational speed of the motor when the fan is at the initial static pressure and the working current is the second current, and the second rotational speed is the rotational speed of the motor when the fan is in the first static pressure section and the working current is the initial current. Here, the initial current is the initial current value that meets the preset conditions. Calculate the average value of the first rotational speed and the second rotational speed, and use the average value as the first rotational speed threshold. The specific static pressure value when the fan is in the first static pressure section is not limited.

[0081] When the fan is in the first static pressure section, if the range hood needs to be raised to the transition gear, that is, the fan needs to be at the static pressure (initial static pressure) of the transition gear, then determine whether the rotational speed of the fan motor is greater than the first rotational speed threshold. If so, switch the current to the initial current (transition current) corresponding to the transition gear. Similarly, if the range hood is in the transition gear and the fan is at the static pressure of the transition gear, then determine whether the rotational speed of the fan motor is less than the first rotational speed threshold. If so, control the current to switch to the second current.

[0082] Step S203: Obtain a second rotational speed threshold based on the third rotational speed and the fourth rotational speed, and use the second rotational speed threshold as the judgment threshold between the second static pressure section and the transition gear.

[0083] Specifically, step S203 includes: calculating the average value of the third rotational speed and the fourth rotational speed when a preset condition is satisfied to obtain the second rotational speed threshold.

[0084] The third rotational speed is the rotational speed of the fan when it is in the second static pressure section and the working current is the initial current, and the fourth rotational speed is the rotational speed of the fan when it is in the initial static pressure and the working current is the first current. Calculate the average value of the third rotational speed and the fourth rotational speed, and use the average value as the second rotational speed threshold. The specific static pressure value when the fan is in the second static pressure section may not be limited.

[0085] When the static pressure of the fan is in the transition gear, if the range hood needs to be lifted to the second static pressure section, determine whether the motor rotational speed of the fan is greater than the second rotational speed threshold. If so, switch the current to the first current. Similarly, if the fan is in the second static pressure section and the range hood needs to be lowered to the transition gear, determine whether the motor rotational speed of the fan is less than the second rotational speed threshold. If so, control the current to be switched to the initial current (transition current) corresponding to the transition gear.

[0086] According to an embodiment of the present invention, a control method for a range hood is provided. The range hood is provided with a transition gear, wherein the transition gear is set according to the method for setting the transition gear of the range hood provided in the above embodiment. Figure 2 It is a flowchart of the control method for the range hood according to an embodiment of the present invention, as Figure 2 shown, and this process includes the following steps:

[0087] Step S301: Obtain the rotational speed of the motor in real time.

[0088] A fan is provided in the range hood, and the motor is used to drive the fan to work. Specifically, the rotational speed of the motor can be monitored in real time through sensors (such as Hall sensors, optical encoders, etc.), and these data are transmitted to the control system.

[0089] Step S302: When the rotational speed increases to be greater than the first rotational speed threshold, adjust the working current of the fan from the second current to the transition current.

[0090] When it is detected that the rotational speed of the motor increases and is greater than the first rotational speed threshold, control the working current of the fan to be switched from the second current to the transition current.

[0091] Step S303: When the rotational speed increases to be greater than the second rotational speed threshold, adjust the working current of the fan from the transition current to the first current.

[0092] When it is detected that the rotational speed of the motor increases and is greater than the second rotational speed threshold, control the working current of the blower to be adjusted from the transition current to the first current.

[0093] Step S304, when the rotational speed decreases to be less than the first rotational speed threshold, adjust the working current of the blower from the transition current to the second current.

[0094] When it is detected that the rotational speed of the motor decreases and is less than the first rotational speed threshold, control the working current of the blower to be adjusted from the transition current to the second current.

[0095] Step S305, when the rotational speed decreases to be less than the second rotational speed threshold, adjust the working current of the blower from the first current to the transition current.

[0096] When it is detected that the rotational speed of the motor decreases and is less than the second rotational speed threshold, adjust the working current of the blower from the first current to the transition current.

[0097] In this embodiment, a setting device for the transition gear of the range hood is further provided. This device is used to implement the above-mentioned embodiments and implementation manners, and those that have been described will not be repeated here. As used hereinafter, the term "module" can be a combination of software and / or hardware that can achieve a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and contemplated.

[0098] This embodiment provides a setting device for the transition gear of a range hood, as Figure 3 shown, including:

[0099] A current adjustment module, configured to adjust the initial current, and use the initial current that meets the preset conditions as the transition current of the transition gear. The preset conditions are at least that the first rotational speed is greater than the second rotational speed and the fourth rotational speed is greater than the third rotational speed. Wherein, the first rotational speed is the rotational speed when the blower is at the initial static pressure and the working current is the second current, and the second current is the matching working current of the blower in the first static pressure section; the second rotational speed is the rotational speed when the blower is in the first static pressure section and the working current is the initial current; the third rotational speed is the rotational speed when the blower is in the second static pressure section and the working current is the initial current; the fourth rotational speed is the rotational speed when the blower is at the initial static pressure and the working current is the first current, and the first current is the matching working current of the blower in the second static pressure section;

[0100] The preset first static pressure is used to represent the critical static pressure point for lifting from the first static pressure section to the second static pressure section, and the preset second static pressure is used to represent the critical static pressure point for decreasing from the second static pressure section to the first static pressure section. The preset first static pressure is less than the preset second static pressure, and the first static pressure section and the second static pressure section are adjacent;

[0101] The initial current is used to characterize the preset transition current of the transition gear, and the initial static pressure is used to characterize the static pressure of the fan at the transition gear. The initial static pressure is greater than the preset first static pressure and less than the preset second static pressure;

[0102] A first threshold determination module, configured to obtain a first speed threshold according to the first speed and the second speed, and use the first speed threshold as the judgment threshold between the first static pressure section and the transition gear, where the first speed threshold is located between the first speed and the second speed;

[0103] A second threshold determination module, configured to obtain a second speed threshold according to the third speed and the fourth speed, and use the second speed threshold as the judgment threshold between the second static pressure section and the transition gear, where the second speed threshold is located between the third speed and the fourth speed.

[0104] In some alternative embodiments, the current adjustment module includes:

[0105] A speed recording unit, configured to record the first speed when the fan operates at the initial static pressure with a second current and the fourth speed when the fan operates at the initial static pressure with a first current;

[0106] A first control unit, configured to control the fan to operate in a first preset state, where the first preset state includes that the static pressure is in the first static pressure section and the working current is the initial current;

[0107] A second control unit, configured to control the fan to operate in a second preset state, where the second preset state includes that the static pressure is in the second static pressure section and the working current is the initial current;

[0108] An adjustment unit, configured to adjust the initial current of the first preset state and the initial current of the second preset state, and detect the second speed of the fan in the first preset state and the third speed of the fan in the second preset state, until the first speed, the second speed, the third speed, and the fourth speed meet the preset conditions, and mark the initial current when the preset conditions are met as the transition current of the transition gear.

[0109] In some alternative embodiments, the preset conditions include that a first difference between the first speed and the second speed is greater than a first speed difference, and a second difference between the third speed and the fourth speed is greater than a second speed difference.

[0110] In some alternative embodiments, the first threshold determination module includes:

[0111] A first threshold calculation unit, configured to calculate an average value of the first speed and the second speed when the preset conditions are met, to obtain the first speed threshold.

[0112] In some alternative embodiments, the second threshold determination module includes:

[0113] A second threshold calculation unit, configured to calculate an average value of the third rotational speed and a fourth rotational speed when a preset condition is satisfied, to obtain the second rotational speed threshold.

[0114] In some alternative embodiments, the first current is greater than the second current, and a difference between the first current and the second current is not less than 0.5 A.

[0115] This embodiment provides a control device for a range hood, including:

[0116] A rotational speed acquisition module, configured to acquire the rotational speed of the motor in real time;

[0117] A first adjustment module, configured to adjust the working current of the blower from the second current to a transition current when the rotational speed increases to be greater than a first rotational speed threshold;

[0118] A second adjustment module, configured to adjust the working current of the blower from the transition current to the first current when the rotational speed increases to be greater than a second rotational speed threshold;

[0119] A third adjustment module, configured to adjust the working current of the blower from the transition current to the second current when the rotational speed decreases to be less than the first rotational speed threshold;

[0120] A fourth adjustment module, configured to adjust the working current of the blower from the first current to the transition current when the rotational speed decreases to be less than the second rotational speed threshold.

[0121] An embodiment of the present invention further provides a controller for a range hood, having the above device.

[0122] Please refer to Figure 4 , Figure 4 which is a schematic structural diagram of a controller for a range hood provided by an alternative embodiment of the present invention. As shown in Figure 4As shown, the controller of the range hood includes one or more processors 10, a memory 20, and interfaces for connecting various components, including a high-speed interface and a low-speed interface. Each component communicates with each other using different buses and can be installed on a common motherboard or installed in other ways as needed. The processor can process instructions executed within the controller of the range hood, including instructions stored in the memory or on the memory to display graphical information of the GUI on an external input / output device (such as a display device coupled to the interface). In some alternative embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple controllers of the range hood can be connected, and each device provides part of the necessary operations (for example, as a server array, a set of blade servers, or a multi-processor system). Figure 4 Taking one processor 10 as an example in

[0123] The processor 10 can be a central processing unit, a network processor, or a combination thereof. Among them, the processor 10 can further include a hardware chip. The above hardware chip can be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The above programmable logic device can be a complex programmable logic device, a field programmable gate array, a generic array logic, or any combination thereof.

[0124] Among them, the memory 20 stores instructions executable by at least one processor 10, so that the at least one processor 10 executes the methods shown in the above embodiments.

[0125] The memory 20 can include a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of the controller of the range hood and the like. In addition, the memory 20 can include a high-speed random access memory, and can also include a non-transitory memory, such as at least one disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some alternative embodiments, the memory 20 can optionally include a memory remotely set relative to the processor 10, and these remote memories can be connected to the controller of the range hood through a network. Examples of the above network include but are not limited to the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0126] The memory 20 can include a volatile memory, such as a random access memory; the memory can also include a non-volatile memory, such as a flash memory, a hard disk, or a solid-state drive; the memory 20 can also include a combination of the above types of memories.

[0127] The controller of the range hood further includes a communication interface 30 for the controller of the range hood to communicate with other devices or a communication network.

[0128] An embodiment of the present invention further provides a range hood, which has the above-mentioned controller. A range hood is a smoke exhaust device, which is provided with a controller, a blower, a motor, a sensor, etc. that have the ability to adjust dynamic current.

[0129] In the specific content of the above specific embodiment, each technical feature can be combined arbitrarily without contradiction. For the sake of concise description, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features does not exist in contradiction, it should be considered as the scope recorded in this specification.

[0130] The specific content of the above specific embodiment only expresses several embodiments of the present invention, and its description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the invention patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent of the present invention should be subject to the appended claims.

Claims

1. A method for setting a range hood transition position, characterized in that: The method comprises: Adjust the initial current, and use the initial current that meets the preset conditions as the transition current of the transition gear, wherein the preset conditions are at least that the first speed is greater than the second speed and the fourth speed is greater than the third speed, wherein the first speed is the speed when the fan is in the initial static pressure and the working current is the second current, and the second current is the matching working current when the fan is in the first static pressure section; the second speed is the speed when the fan is in the first static pressure section and the working current is the initial current; the third speed is the speed when the fan is in the second static pressure section and the working current is the initial current; the fourth speed is the speed when the fan is in the initial static pressure and the working current is the first current, and the first current is the matching working current when the fan is in the second static pressure section; The preset first static pressure is used to characterize the critical static pressure point from the first static pressure section to the second static pressure section, and the preset second static pressure is used to characterize the critical static pressure point from the second static pressure section to the first static pressure section, the preset first static pressure is less than the preset second static pressure, and the first static pressure section and the second static pressure section are adjacent; The initial current is used to characterize the preset transition current of the transition gear, the initial static pressure is used to characterize the static pressure of the fan at the transition gear, and the initial static pressure is greater than the preset first static pressure and less than the preset second static pressure; According to the first speed and the second speed, a first speed threshold is obtained, and the first speed threshold is used as a judgment threshold between the first static pressure section and the transition gear, wherein the first speed threshold is between the first speed and the second speed; A second speed threshold is obtained according to the third speed and the fourth speed, and the second speed threshold is used as a judgment threshold for the second static pressure section and the transition gear, wherein the second speed threshold is between the third speed and the fourth speed.

2. The method according to claim 1, characterized in that The adjusting the initial current to use the initial current that meets the preset condition as the transition current of the transition gear includes: Recording a first speed of the fan when it is operating at the second current at the initial static pressure and a fourth speed of the fan when it is operating at the first current at the initial static pressure; Controlling the fan to operate in a first preset state, wherein the first preset state includes the static pressure being the first static pressure section and the operating current being the initial current; Controlling the fan to operate in a second preset state, wherein the second preset state includes the static pressure being the second static pressure section and the operating current being the initial current; Adjust the initial current of the first preset state and the initial current of the second preset state, and detect the second speed of the fan in the first preset state and the third speed of the fan in the second preset state, until the first speed, the second speed, the third speed and the fourth speed meet the preset conditions, and mark the initial current when the preset conditions are met as the transition current of the transition gear.

3. The method according to claim 1 or 2, characterized in that: The preset condition includes that a first difference between the first speed and the second speed is greater than a first speed difference, and a second difference between the third speed and the fourth speed is greater than a second speed difference.

4. The method according to claim 1, characterized in that: The obtaining a first speed threshold according to the first speed and the second speed includes: An average value of the first speed and a second speed when a preset condition is satisfied is calculated to obtain the first speed threshold.

5. The method according to claim 1, characterized in that The obtaining a second speed threshold according to the third speed and the fourth speed includes: An average value of the third speed and a fourth speed when a preset condition is satisfied is calculated to obtain the second speed threshold.

6. The method according to claim 1, characterized in that The first current is greater than the second current, and a difference between the first current and the second current is not less than 0.5 amperes.

7. A method for controlling a range hood, characterized in that: The range hood is provided with a transition gear, and the transition gear is set based on the setting method of the range hood transition gear according to any one of claims 1 to 6 above, and the control method comprises: Get the motor speed in real time; When the rotation speed increases to be greater than the first rotation speed threshold, adjusting the working current of the fan from the second current to the transition current; When the rotation speed increases to be greater than a second rotation speed threshold, adjusting the operating current of the fan from the transition current to the first current; When the rotation speed decreases to less than the first rotation speed threshold, adjusting the operating current of the fan from the transition current to the second current; When the rotation speed decreases to be less than the second rotation speed threshold, the operating current of the fan is adjusted from the first current to the transition current.

8. A device for setting the transition gear of a range hood, characterized in that: The device comprises: A current adjustment module, used for adjusting the initial current, and taking the initial current that meets the preset conditions as the transition current of the transition gear, wherein the preset conditions are at least that the first speed is greater than the second speed and the fourth speed is greater than the third speed, wherein the first speed is the speed when the fan is in the initial static pressure and the working current is the second current, and the second current is the matching working current when the fan is in the first static pressure section; the second speed is the speed when the fan is in the first static pressure section and the working current is the initial current; the third speed is the speed when the fan is in the second static pressure section and the working current is the initial current; the fourth speed is the speed when the fan is in the initial static pressure and the working current is the first current, and the first current is the matching working current when the fan is in the second static pressure section; The preset first static pressure is used to characterize the critical static pressure point from the first static pressure section to the second static pressure section, and the preset second static pressure is used to characterize the critical static pressure point from the second static pressure section to the first static pressure section, the preset first static pressure is less than the preset second static pressure, and the first static pressure section and the second static pressure section are adjacent; The initial current is used to characterize the preset transition current of the transition gear, the initial static pressure is used to characterize the static pressure of the fan at the transition gear, and the initial static pressure is greater than the preset first static pressure and less than the preset second static pressure; a first threshold determination module, configured to obtain a first speed threshold according to the first speed and the second speed, and use the first speed threshold as a judgment threshold between the first static pressure section and the transition gear, wherein the first speed threshold is between the first speed and the second speed; The second threshold determination module is used to obtain a second speed threshold according to the third speed and the fourth speed, and use the second speed threshold as a judgment threshold for the second static pressure section and the transition gear, wherein the second speed threshold is between the third speed and the fourth speed.

9. A range hood controller, characterized in that: The controller comprises: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method for setting the range hood transition gear described in any one of claims 1 to 6 and / or the method for controlling the range hood described in any one of claim 7 by executing the computer instructions.

10. A range hood, characterized in that: The range hood comprises the controller according to claim 9.

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