An extractor hood and a control method applied thereto

Abstract

The application provides an oil fume exhauster and a control method applied to the oil fume exhauster. The oil fume exhauster comprises a smoke baffle, a touch strip, a transmission member, a driving device and a controller. The touch strip is located below the smoke baffle and is electrically connected with the controller. The controller is electrically connected with the driving device. The driving device is drivingly connected with the transmission member. The transmission member is drivingly connected with the smoke baffle and is used for driving the smoke baffle to open and close. The touch strip is configured to have an initial capacitance in a state without a contact object and to generate a capacitance change in response to the contact of the contact object. The controller is configured to acquire the capacitance data of the touch strip and to trigger the output power adjustment of the driving device in response to the capacitance change of the touch strip, so as to adjust the running speed of the transmission member for driving the smoke baffle to close. The touch strip is arranged below the smoke baffle, the contact object below the smoke baffle can be effectively identified, the current contact state can be accurately judged according to the capacitance change, the anti-pinch time can be accurately controlled, the hand pinching can be effectively prevented, and the cost is low.

Description

Technical Field

[0001] This invention relates to the field of intelligent electrical appliance technology, and in particular to a range hood and a control method applied thereto. Background Technology

[0002] In the cleaning mode of the range hood, the opening angle of the baffle needs to be increased to clean the grease on the filter. However, in actual operation, the baffle may close and pinch your hand due to accidental button presses on the panel.

[0003] Most existing technologies use infrared sensors to detect whether there are obstacles under the smoke baffle to prevent pinching. However, they can usually only detect whether there are obstacles, making it difficult to accurately control the timing of the anti-pinch action. This may result in delays in the anti-pinch action, and the deployment cost of infrared sensors is relatively high. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a range hood and a control method thereon; the technical solution is as follows:

[0005] On one hand, the present invention provides a range hood, including a smoke baffle, a touch strip, a transmission component, a drive device, and a controller. The touch strip is located below the smoke baffle and is electrically connected to the controller. The controller is electrically connected to the drive device, the drive device is drivenly connected to the transmission component, and the transmission component is drivenly connected to the smoke baffle for driving the smoke baffle to open and close.

[0006] The touch strip is configured to have an initial capacitance in the absence of a contact object, and to generate a capacitance change in response to contact with a contact object;

[0007] The controller is configured to acquire capacitance data of the touch strip and trigger output power adjustment of the drive device in response to capacitance changes of the touch strip, so as to adjust the operating speed of the transmission component driving the smoke baffle to close.

[0008] Furthermore, the range hood also includes a detection circuit, in which the touch strip is disposed, and the detection circuit is configured to: respond to the contact status of the touch strip with a contact object, and feed back the capacitance data of the touch strip to the controller.

[0009] Furthermore, the touch strip is also configured to generate a capacitance change greater than or equal to a first proportional threshold when the contact of the contact object reaches a preset contact condition, the first proportional threshold being the ratio between the first preset capacitance of the touch strip and the initial capacitance, the first proportional threshold being 115% to 120%.

[0010] Furthermore, the touch strip is also configured to generate a capacitance change less than a first proportional threshold and greater than or equal to a second proportional threshold in response to the contact of the contact object not reaching a preset contact condition. The first proportional threshold is the ratio between the first preset capacitance of the touch strip and the initial capacitance, and the first proportional threshold is 115% to 120%. The second proportional threshold is the ratio between the second preset capacitance of the touch strip and the initial capacitance, and the second proportional threshold is 75% to 80%.

[0011] Furthermore, the touch strip is also configured to generate a capacitance change less than a second proportional threshold when a touch strip fault condition is met, the second proportional threshold being the ratio between the second preset capacitance of the touch strip and the initial capacitance, the second proportional threshold being 75% to 80%.

[0012] Furthermore, the touch strip is also configured to generate a capacitance change greater than or equal to a third proportional threshold when the contact state of the contact object reaches a critical state, the third proportional threshold being the ratio between the third preset capacitance of the touch strip and the initial capacitance, the third proportional threshold being 135% to 140%.

[0013] Furthermore, the controller is configured to: when the capacitance data indicates that the touch strip produces a capacitance change greater than or equal to a first proportional threshold, adjust the output power of the drive device based on a preset correspondence to adjust the operating speed of the transmission component driving the smoke baffle to close; the preset correspondence is used to indicate the correspondence between multiple capacitance changes and multiple output powers.

[0014] Furthermore, the controller is configured to output fault information when the capacitance data indicates that the touch strip produces a capacitance change less than a second proportional threshold, the fault information being used to indicate that the touch strip is in a fault state.

[0015] Furthermore, the controller is also configured to: acquire the motion state of the transmission component, the motion state including an open state, a locked state, and a closed state; and, when the motion state of the transmission component is in the closed state, trigger the output power adjustment of the drive device in response to the capacitance change of the touch strip, so as to adjust the running speed of the transmission component driving the smoke baffle to close.

[0016] On the other hand, the present invention also provides a control method for a range hood, the range hood including a smoke baffle, a touch strip, a transmission component, and a drive device, the touch strip being located below the smoke baffle, the drive device being drivenly connected to the transmission component, and the transmission component being drivenly connected to the smoke baffle for driving the smoke baffle to open and close; the touch strip is configured to have an initial capacitance in a state without contact with an object, and to generate a capacitance change in response to contact with an object; the method includes:

[0017] The capacitance data of the touch strip is acquired, and the output power of the drive device is adjusted in response to the capacitance change of the touch strip, so as to adjust the running speed of the transmission component driving the smoke baffle to close.

[0018] On the other hand, the present invention also provides a controller for a range hood, the range hood including a smoke baffle, a touch strip, a transmission component, and a drive device. The touch strip is located below the smoke baffle, the drive device is drivenly connected to the transmission component, and the transmission component is drivenly connected to the smoke baffle for driving the smoke baffle to open and close. The touch strip is configured to have an initial capacitance in the absence of contact with an object, and to generate a capacitance change in response to contact with an object. The controller is configured to:

[0019] The capacitance data of the touch strip is acquired, and the output power of the drive device is adjusted in response to the capacitance change of the touch strip, so as to adjust the running speed of the transmission component driving the smoke baffle to close.

[0020] On the other hand, the present invention also provides a control device for a range hood, the device including a processor and a memory, the memory storing at least one instruction or at least one program, the at least one instruction or the at least one program being loaded and executed by the processor to realize the control method for the range hood as described above.

[0021] Implementing this invention has the following beneficial effects:

[0022] This invention features a touch strip positioned below the smoke baffle. This touch strip is configured to have an initial capacitance when there is no contact object and to change capacitance in response to contact with an object. A controller electrically connected to the touch strip is configured to acquire capacitance data of the touch strip and trigger the output power adjustment of a drive device in response to capacitance changes. The drive device is driven and connected to a transmission component, which in turn is driven and connected to the smoke baffle to adjust the speed at which the transmission component drives the smoke baffle to close. This not only effectively identifies whether there is a contact object below the smoke baffle but also accurately determines the current contact state of the object based on capacitance changes. Combined with the drive device, this allows for precise control of the anti-pinch timing, effectively preventing hand pinching. Furthermore, the touch strip is cost-effective, significantly reducing the cost of anti-pinch features on range hoods. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a range hood provided in an embodiment of the present invention;

[0025] Figure 2 A logic structure diagram of a control method provided in an embodiment of the present invention;

[0026] Figure 3 A logic structure diagram of another control method provided in an embodiment of the present invention;

[0027] Figure 4 This is a flowchart of a control method in a specific embodiment of the present invention;

[0028] Figure 5 This is a hardware structure block diagram of an electronic device that performs a control method applied to a range hood, according to an embodiment of the present invention. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments, and therefore should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention can be implemented in orders other than those shown in the figures or descriptions below. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0031] The following combination Figure 1This invention introduces a range hood comprising a touch strip, a controller, a drive unit, a transmission component, and a smoke baffle. The touch strip is located below the smoke baffle and is configured to have an initial capacitance in the absence of contact with an object, and to generate a capacitance change in response to contact with an object. The touch strip is electrically connected to the controller, the controller is electrically connected to the drive unit, the drive unit is drivenly connected to the transmission component, and the transmission component is drivenly connected to the smoke baffle to drive the smoke baffle to open and close. The controller is configured to acquire the capacitance data of the touch strip and trigger the output power adjustment of the drive unit in response to the capacitance change of the touch strip, thereby adjusting the operating speed at which the transmission component drives the smoke baffle to close. Thus, based on the different capacitance changes generated by the touch strip in response to different contact states, the controller can accurately control the anti-pinch timing and precisely control the anti-pinch action of the transmission component and the smoke baffle by adjusting the output power of the drive unit, achieving an effective and reliable anti-pinch function. Furthermore, the touch strip is easy to arrange, low in cost, and occupies little space, effectively reducing the modification cost of the range hood.

[0032] In some exemplary embodiments, the contact conditions of the touch strip include a state with no contact, a state with slight contact between the contact and the touch strip, and a state where the contact is blocked by the touch strip. Accordingly, the capacitance change of the touch strip is related to the contact conditions, specifically to the contact area between the contact and the touch strip, the contact pressure, etc. For example, the capacitance change generated by the touch strip is different when the contact area is different; the capacitance change generated by the touch strip is also different when the contact pressure is different; the touch strip can generate different capacitance changes in response to different contact conditions of the contact.

[0033] The initial capacitance is the capacitance value generated by the touch strip in the absence of contact with an object, denoted as α. The capacitance data is used to indicate the real-time capacitance change of the touch strip, that is, the current capacitance value of the touch strip. Furthermore, the touch strip is configured such that the current capacitance generated by the touch strip is positively correlated with the contact condition of the object, that is, the larger the contact area and / or the greater the contact pressure, the larger the corresponding current capacitance, and vice versa. When there is contact between the object and the touch strip, the capacitance change or current capacitance value generated by the touch strip is greater than or equal to the initial capacitance value α.

[0034] Specifically, in some exemplary embodiments, the range hood further includes a detection circuit, in which a touch strip is disposed. The detection circuit is configured to: respond to the contact status of the touch strip with a contact object, and feed back the capacitance data of the touch strip to the controller; thus, improving the accuracy and reliability of data feedback transmission.

[0035] Specifically, the touch strip is also configured to generate a capacitance change greater than or equal to a first proportional threshold when the contact of the contact object reaches a preset contact condition. The first proportional threshold is the ratio between the first preset capacitance of the touch strip and the initial capacitance, and the first proportional threshold is 115% to 120%.

[0036] The contact condition of the contact object reaching the preset contact condition means that the contact object of the touch strip reaches a state of slight contact with the touch strip. In other words, the preset contact condition is the critical state between the state of no contact object and the state of slight contact between the contact object and the touch strip. When the preset contact condition is reached, it means that there may be a risk of pinching the hand.

[0037] Accordingly, the first preset capacitance is the current capacitance value generated by the touch strip under the critical state of the preset contact condition, and the first proportional threshold is the ratio between the current capacitance value of the object about to contact the touch strip under the critical state and the initial capacitance. Understandably, the first proportional threshold can be any value between 115% and 120%. For example, the first proportional threshold can be 115%, 116%, 117%, 118%, 119%, 120%, etc. In this way, the contact status of the object can be classified, which is beneficial for the subsequent controller to control the object based on the capacitance data, trigger different output power adjustments according to different capacitance changes, and achieve precise control of the anti-pinch timing and anti-pinch action. For example, in some optional embodiments, the first proportional threshold is 120%, then the touch strip is configured to generate a capacitance change greater than or equal to 120%α when the contact of the object reaches the preset contact condition. At this time, the current capacitance value of the touch strip is greater than or equal to 120%α, indicating that there is slight contact between the object and the touch strip.

[0038] Specifically, the touch strip is further configured to generate a capacitance change less than a first proportional threshold and greater than or equal to a second proportional threshold in response to the contact of the contact object not reaching a preset contact condition. The first proportional threshold is the ratio between the first preset capacitance of the touch strip and the initial capacitance, and the first proportional threshold is 115% to 120%. The second proportional threshold is the ratio between the second preset capacitance of the touch strip and the initial capacitance, and the second proportional threshold is 75% to 80%.

[0039] Among them, "not meeting the preset contact conditions" means that the touch strip itself is in normal operation and the contact object of the touch strip is in a state of no contact. In addition, the capacitance change at this time has a value range from the second proportional threshold to the first proportional threshold, so as to prevent the error caused by individual differences of the touch strip and improve the accuracy and reliability of anti-pinch.

[0040] The second preset capacitance is the current capacitance value of the touch strip when it is in a critical state between normal operation and failure. The second proportional threshold is the ratio between the current capacitance value and the initial capacitance when the touch strip is about to fail. If the touch strip produces a capacitance change greater than or equal to the second proportional threshold, it means that the touch strip is currently in normal operation. Furthermore, if the capacitance change produced by the touch strip is less than the first proportional threshold, it means that the touch strip is in normal operation and there is no contact object.

[0041] Understandably, the second proportional threshold can be any value between 75% and 80%; for example, the second proportional threshold can be 75%, 76%, 77%, 78%, 79%, 80%, etc.; in this way, the adverse effects of problems with the touch strip itself on the final anti-pinch control can be effectively eliminated, which is beneficial to improving the accuracy, reliability and safety of anti-pinch; for example, in some optional embodiments, the first proportional threshold is 120% and the second proportional threshold is 80%, then the touch strip is configured to: generate a capacitance change greater than or equal to 80%α and less than 120%α in response to the contact of the contact object not reaching the preset contact condition. At this time, the current capacitance value of the touch strip is greater than or equal to 80%α and less than 120%α, indicating that the touch strip is in normal operating condition and no contact object is in contact with the touch strip.

[0042] Specifically, the touch strip is also configured to generate a capacitance change less than a second proportional threshold when the touch strip malfunction condition is met. The second proportional threshold is the ratio between the second preset capacitance and the initial capacitance of the touch strip, and the second proportional threshold is 75% to 80%.

[0043] The touch strip fault condition refers to the critical state between the touch strip itself being in a normal operating state and a fault state. Meeting the touch strip fault condition means that the touch strip itself has malfunctioned, and not meeting the touch strip fault condition means that the touch strip itself is in a normal operating state. Correspondingly, if the touch strip produces a capacitance change less than the second proportional threshold, it indicates that the touch strip is currently in a fault state. In this way, misjudgment that may be caused by the touch strip itself malfunctioning is further prevented, which is conducive to improving the reliability of anti-pinch.

[0044] Specifically, the touch strip is also configured to generate a capacitance change greater than or equal to a third proportional threshold when the contact state of the contact object reaches a critical state. The third proportional threshold is the ratio between the third preset capacitance of the touch strip and the initial capacitance, and the third proportional threshold is 135% to 140%.

[0045] The critical state refers to the critical state between the state where the contact object of the touch strip is in slight contact with the touch strip and the state where the contact object is blocked from the touch strip; when the touch strip produces a capacitance change greater than or equal to the first proportional threshold and less than the third proportional threshold, the contact object of the touch strip is in slight contact with the touch strip; while when the touch strip produces a capacitance change greater than or equal to the third proportional threshold, the contact object of the touch strip is blocked from the touch strip.

[0046] Accordingly, the third preset capacitance is the current capacitance value generated by the touch strip in the critical state between slight contact and phase blockage, and the third proportional threshold is the ratio between the current capacitance value in the critical state and the initial capacitance.

[0047] Understandably, the third proportional threshold can be any value between 135% and 140%; for example, the third proportional threshold can be 135%, 136%, 137%, 138%, 139%, 140%, etc.; in this way, the contact status of the contacting object can be graded, which is beneficial for the subsequent controller to control based on capacitance data, trigger more efficient output power adjustment according to higher capacitance changes, and improve the reliability and safety of anti-pinch. For example, in some optional embodiments, the third proportional threshold is 140%, then the touch strip is configured to generate a capacitance change greater than or equal to 140%α in response to the contact state of the contacting object reaching a critical state. At this time, the current capacitance value of the touch strip is greater than or equal to 140%α, indicating that the contact between the contacting object and the touch strip has blocked each other.

[0048] Next, the controller is the main control module of the range hood and the core of the control logic. It is used to control the operation of various modules of the range hood. Specifically, based on the capacitance data of the touch strip, it controls the output power of the drive device to adjust the opening, operation or closing of the transmission components and the smoke baffle.

[0049] In some exemplary embodiments, the initial capacitance of the touch strip is configured to be pre-stored in the controller so that when the controller subsequently obtains the capacitance data of the touch strip, it can directly call the initial capacitance for comparison, determine the current capacitance change of the touch strip, and trigger different output power adjustment commands.

[0050] Furthermore, in some exemplary embodiments, after acquiring the capacitance data, the controller first compares it with the initial capacitance, and triggers different adjustment methods according to the comparison result. The controller is configured to: acquire the capacitance data of the touch strip; determine the ratio between the capacitance data and the initial capacitance; and trigger the output power adjustment of the drive device according to the ratio to adjust the running speed of the transmission component driving the smoke baffle to close.

[0051] In some exemplary embodiments, the output power adjustment of the drive device may specifically include the output current adjustment of the drive device. The controller is specifically configured to: acquire the capacitance data of the touch strip and trigger the output current adjustment of the drive device in response to the capacitance change of the touch strip, so as to adjust the running speed of the transmission component driving the smoke baffle to close.

[0052] In some exemplary embodiments, the output power of the drive device is positively correlated with the operating speed of the transmission component (and the operating speed of the smoke baffle closing). That is, the higher the output power of the drive device, the higher the operating speed of the transmission component and the smoke baffle closing, and vice versa.

[0053] Furthermore, in some other exemplary embodiments, the output current of the drive device is positively correlated with the operating speed of the transmission component (and the operating speed of the smoke baffle closing), that is, the higher the output current of the drive device, the higher the operating speed of the transmission component and the smoke baffle closing, and vice versa.

[0054] In some exemplary embodiments, the controller is configured such that the change in capacitance of the touch strip, or the current capacitance, is negatively correlated with the output power of the drive device; that is, the greater the change in capacitance (or the current capacitance) of the touch strip, the lower the output power of the triggered drive device. Further, in some exemplary embodiments, the controller is configured such that the change in capacitance of the touch strip, or the current capacitance, is negatively correlated with the output current of the drive device; that is, the greater the change in capacitance (or the current capacitance) of the touch strip, the lower the output current of the triggered drive device. In this way, the real-time contact status of the object can be reflected based on the real-time capacitance of the touch strip, and the output power or output current can be gradually reduced based on the real-time capacitance, causing the transmission component and the smoke baffle to gradually decelerate, resulting in a good anti-pinch effect.

[0055] Specifically, the controller is configured to: when the capacitance data indicates that the touch strip produces a capacitance change greater than or equal to a first proportional threshold, adjust the output power of the drive device based on a preset correspondence to adjust the running speed of the transmission component driving the smoke baffle to close; the preset correspondence is used to indicate the correspondence between multiple capacitance changes and multiple output powers.

[0056] The capacitance data indicates that the touch strip produces a capacitance change greater than or equal to the first proportional threshold, indicating that there is a contact object at the touch strip position below the smoke baffle, and the contact situation is either a slight contact state or a blocking state. At this time, the controller determines the output power corresponding to the current capacitance change (or current capacitance value) produced by the touch strip according to the preset correspondence, sets it as the target output power, and controls the output power of the drive device to be adjusted to the target output power. The target output power is less than the preset output power of the drive device under normal operating conditions, so as to reduce the running speed of the transmission component driving the smoke baffle to close, effectively preventing pinching.

[0057] Furthermore, the preset correspondence is used to indicate the correspondence between multiple capacitance changes and multiple output currents. The controller can determine the output current corresponding to the current capacitance change generated by the touch strip according to the preset correspondence, set it as the target output current, and control the output current of the drive device to be adjusted to the target output current. The target output current is less than the preset output current under normal operation of the drive device, so as to reduce the running speed of the transmission component driving the smoke baffle to close.

[0058] In some exemplary embodiments, the preset correspondence, that is, the relationship between the output current and the current capacitance of the touch strip, satisfies the following formula:

[0059]

[0060] Among them, I S I is the target output current of the adjusted drive device, C is the preset output current of the drive device when there is no contact with the smoke baffle during normal operation, and α is the current capacitance value of the touch strip.

[0061] The transmission component will drive the smoke baffle to gradually close. When the contact object is present, the degree of contact between the contact object and the touch strip gradually increases, and the capacitance change generated by the touch strip also becomes larger. During the controller adjustment process, as the current capacitance value of the touch strip gradually increases, the corresponding target output current gradually decreases, which makes the running speed of the transmission component driving the smoke baffle to close gradually decrease, thus achieving effective anti-pinch.

[0062] Specifically, in some exemplary embodiments, the controller is also configured to stop the drive when the capacitance data indicates that the touch strip produces a capacitance change greater than or equal to a third proportional threshold.

[0063] In this scenario, if the touch strip experiences a capacitance change greater than or equal to the third proportional threshold, it indicates that the contact between the object and the touch strip has reached a level of obstruction. At this point, if the transmission component continues to drive the smoke baffle to close, even at a slow speed, it is easy to pinch a hand. Therefore, the control drive device is immediately stopped to effectively prevent pinching. Furthermore, in some exemplary embodiments, the capacitance change of the touch strip gradually increases from greater than or equal to the first proportional threshold to equal to or even greater than the third proportional threshold. During the controller adjustment process, as the current capacitance value of the touch strip gradually increases, the corresponding target output current gradually decreases. When the capacitance change reaches the third proportional threshold, the corresponding target output current decreases to zero, i.e., I... S =0, the transmission component stops running, and the smoke baffle also stops closing. That is, during the adjustment process, the running speed of the transmission component is gradually reduced until it stops, which can accurately and effectively prevent the hand from being pinched. It has good reliability and high safety.

[0064] Specifically, the controller is configured to output fault information when the capacitance data indicates that the touch strip produces a capacitance change less than a second proportional threshold. The fault information is used to indicate that the touch strip is in a fault state.

[0065] When the touch strip is in normal operation, it will only produce a capacitance change greater than or equal to the second proportional threshold. When the capacitance data indicates that the touch strip produces a capacitance change less than the second proportional threshold, it indicates that there is a problem with the touch strip itself. The controller generates and outputs fault information based on the capacitance change less than the second proportional threshold to indicate the fault status of the touch strip and prevent incorrect judgment from causing anti-pinch delay or even failure. In some specific embodiments, the fault information can be further reported to the upper controller and a command can be sent to the display device so that the display device can report the fault, which has a high degree of visualization and good reliability.

[0066] Specifically, in some exemplary embodiments, the controller is further configured to maintain a constant output power of the drive device when the capacitance data indicates that the touch strip produces a capacitance change greater than or equal to a second proportional threshold and less than a first proportional threshold.

[0067] The capacitance data indicates that the touch strip produces a capacitance change greater than or equal to the second proportional threshold and less than the first proportional threshold, indicating that the touch strip is in normal operation and there is no contact object under the smoke baffle. At this time, there is no need to adjust the output power of the drive device, that is, no additional control is required. It is sufficient to maintain the output power of the drive device at the preset output power constant so that the transmission component can drive the smoke baffle to continue to close.

[0068] Specifically, the controller is also configured to: acquire the motion state of the transmission component, including an open state, a locked state, and a closed state; and, when the motion state of the transmission component is in the closed state, trigger the output power adjustment of the drive device in response to the capacitance change of the touch strip, so as to adjust the running speed of the transmission component driving the smoke baffle to close.

[0069] In the range hood's cleaning mode, the controller implements anti-pinch protection. There is no risk of pinching when the transmission component is in the open or locked state. However, when the transmission component is in the closing state, the smoke baffle closes, posing a pinching risk. Therefore, before triggering the drive device's output power adjustment in response to changes in the touch strip's capacitance, the controller first obtains the transmission component's movement status. Only when the transmission component is in the closing state does it trigger the drive device's output power adjustment in response to changes in the touch strip's capacitance. This design offers high precision, reliability, and saves on the controller's computational power.

[0070] The following describes the control method of the present invention applied to a range hood. The range hood includes a smoke baffle, a touch strip, a transmission component, and a drive device. The touch strip is located below the smoke baffle. The drive device is drivenly connected to the transmission component, and the transmission component is drivenly connected to the smoke baffle to drive the smoke baffle to open and close. The touch strip is configured to have an initial capacitance in the absence of a contact object and to generate a capacitance change in response to contact with a contact object.

[0071] This application provides method operation steps as shown in the embodiments or flowcharts, but based on conventional or non-inventive labor, more or fewer operation steps may be included. The order of steps listed in the embodiments is merely one possible execution order among many steps and does not represent the only execution order. In actual device, system, or equipment products, the method can be executed sequentially according to the embodiments or drawings, or in parallel (e.g., in a parallel processor or multi-threaded processing environment). Figure 2 As shown, the method may include S201-S203:

[0072] S201, Obtain the capacitance data of the touch strip;

[0073] S203, in response to the capacitance change of the touch strip, the output power of the drive device is adjusted to adjust the operating speed of the transmission member driving the smoke baffle to close.

[0074] In some exemplary embodiments, the method includes: acquiring capacitance data of a touch strip; determining a ratio between the capacitance data and an initial capacitance; and, based on the ratio, triggering an output power adjustment of the drive device to adjust the operating speed at which the transmission member drives the smoke baffle to close.

[0075] In some exemplary embodiments, S201-S203 includes: acquiring capacitance data of the touch strip and triggering output current adjustment of the drive device in response to capacitance changes of the touch strip, so as to adjust the operating speed of the transmission member driving the smoke baffle to close.

[0076] In some exemplary embodiments, S203 includes: maintaining the output power of the driving device constant when the capacitance data indicates that the touch strip produces a capacitance change greater than or equal to a second proportional threshold and less than a first proportional threshold.

[0077] In some exemplary embodiments, S203 includes: when the capacitance data indicates that the touch strip produces a capacitance change greater than or equal to a first proportional threshold, adjusting the output power of the driving device based on a preset correspondence to adjust the operating speed of the transmission member driving the smoke baffle to close; the preset correspondence is used to indicate the correspondence between multiple capacitance changes and multiple output powers.

[0078] In some exemplary embodiments, S203 includes: controlling the driving device to stop when the capacitance data indicates that the touch strip produces a capacitance change greater than or equal to a third proportional threshold.

[0079] In some exemplary embodiments, S203 includes: when the capacitance data indicates that the touch strip produces a capacitance change less than a second proportional threshold, outputting fault information, the fault information being used to indicate that the touch strip is in a fault state.

[0080] In some exemplary implementations, such as Figure 3 As shown, before S201, the method further includes S301: obtaining the motion state of the transmission member, the motion state including an open state, a locked state, and a closed state; then S203 includes: when the motion state of the transmission member is in the closed state, triggering the output power adjustment of the drive device in response to the capacitance change of the touch strip, so as to adjust the running speed of the transmission member driving the smoke baffle to close.

[0081] The following combination Figure 4 This section introduces a control method applied to range hoods. It should be understood that, although Figure 4 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 4At least some of the steps in the process may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but may be executed at different times. The execution order of these steps or stages is not necessarily sequential, but may be executed in turn or alternately with other steps or at least some of the steps or stages in other steps.

[0082] See Figure 4 The control method includes:

[0083] S11, In the cleaning mode of the range hood, the controller acquires the motion state of the transmission components;

[0084] S12, Obtain the capacitance data of the touch strip;

[0085] S13, when the motion state of the transmission component is in the closed state, the controller determines the ratio between the current capacitance value and the initial capacitance based on the capacitance data and the initial capacitance.

[0086] S14, the controller determines whether the ratio is greater than or equal to the first proportional threshold. If yes, proceed to S18; otherwise, proceed to S15.

[0087] S15, the controller determines whether the ratio is greater than or equal to the second proportional threshold. If yes, proceed to S16; otherwise, proceed to S17.

[0088] S16, control the output current of the drive device to remain constant, and return to S14;

[0089] S17, output fault information;

[0090] S18, the controller determines whether the ratio is greater than or equal to the third ratio threshold. If yes, proceed to S20; otherwise, proceed to S19.

[0091] S19, based on the preset correspondence, reduce the output current of the drive device to reduce the running speed of the transmission component driving the smoke baffle to close, and return to S18;

[0092] S20, control the drive device to stop, and end the process.

[0093] Embodiments of the present invention also provide a controller for a range hood. The range hood includes a smoke baffle, a touch strip, a transmission component, and a drive device. The touch strip is located below the smoke baffle. The drive device is drivenly connected to the transmission component, and the transmission component is drivenly connected to the smoke baffle to drive the smoke baffle to open and close. The touch strip is configured to have an initial capacitance in the absence of contact with an object, and to generate a capacitance change in response to contact with an object. The controller is configured to:

[0094] The capacitance data of the touch strip is acquired and the output power of the drive device is adjusted in response to the capacitance change of the touch strip, so as to adjust the running speed of the transmission component driving the smoke baffle to close.

[0095] The controller embodiments, method embodiments, and range hoods in this invention are based on similar implementation methods, and will not be described again here.

[0096] This invention also provides a control device for a range hood, the device including a processor and a memory, the memory storing at least one instruction or at least one program, the at least one instruction or the at least one program being loaded and executed by the processor to implement the control method for the range hood as described above.

[0097] The methods and embodiments provided in this invention can be executed in electronic devices such as mobile terminals, computer terminals, servers, or similar computing devices. Figure 5 This is a hardware structure block diagram of an electronic device used in a control method for a range hood, as provided in an embodiment of the present invention. Figure 5 As shown, the electronic device 500 can vary significantly due to differences in configuration or performance. It may include one or more central processing units (CPUs) 510 (CPUs 510 may include, but are not limited to, microprocessors such as MCUs or programmable logic devices such as FPGAs), a memory 530 for storing data, and one or more storage media 520 (e.g., one or more mass storage devices) for storing application programs 523 or data 522. The memory 530 and storage media 520 may be temporary or persistent storage. The program stored in the storage media 520 may include one or more modules, each module may include a series of instruction operations on the electronic device. Furthermore, the CPU 510 may be configured to communicate with the storage media 520 and execute the series of instruction operations in the storage media 520 on the electronic device 500. Electronic device 500 may also include one or more power supplies 560, one or more wired or wireless network interfaces 550, one or more input / output interfaces 540, and / or one or more operating systems 521, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, etc.

[0098] The input / output interface 540 can be used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the communication provider of the electronic device 500. In one example, the input / output interface 540 includes a network interface controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the input / output interface 540 may be a radio frequency (RF) module for wireless communication with the Internet.

[0099] Those skilled in the art will understand that Figure 5 The structure shown is for illustrative purposes only and does not limit the structure of the electronic device described above. For example, the electronic device 500 may also include... Figure 5 The more or fewer components shown, or having the same Figure 5 The different configurations shown.

[0100] This invention also provides a storage medium storing at least one instruction or at least one program segment, which is loaded and executed by a processor to implement the control method for a range hood described above. Optionally, the storage medium may be located at at least one network server among multiple network servers in a computer network. Furthermore, the storage medium may include, but is not limited to, random access memory (RAM), read-only memory (ROM), non-volatile memory (NVM), USB flash drive, portable hard drive, disk storage device, flash memory device, other volatile solid-state storage devices, and other storage media capable of storing program code.

[0101] According to one aspect of the present invention, a computer program product or computer program is provided, the computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and executes the computer instructions, causing the computer device to perform the methods provided in the various alternative implementations described above.

[0102] It should be noted that the order of the above embodiments of the present invention is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. Furthermore, specific embodiments have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims can be performed in a different order than that shown in the embodiments and still achieve the desired result. Additionally, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0103] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0104] The above description is merely some embodiments of the present invention and is not intended to limit the present invention. Those skilled in the art should understand that the present invention can have various changes and improvements, and any modifications, equivalent substitutions and improvements made in accordance with the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A range hood, characterized in that, The device includes a smoke baffle, a touch strip, a transmission component, a drive unit, and a controller. The touch strip is located below the smoke baffle and is electrically connected to the controller. The controller is electrically connected to the drive unit, which is drivenly connected to the transmission component. The transmission component is drivenly connected to the smoke baffle and is used to drive the smoke baffle to open and close. The touch strip is configured to have an initial capacitance in the absence of a contact object, and to generate a capacitance change in response to contact with a contact object; The controller is configured to acquire capacitance data of the touch strip and trigger output power adjustment of the drive device in response to capacitance changes of the touch strip, so as to adjust the operating speed of the transmission component driving the smoke baffle to close.

2. The range hood according to claim 1, characterized in that, The range hood also includes a detection circuit, in which the touch strip is disposed. The detection circuit is configured to: respond to the contact status of the touch strip with a contact object, and feed back the capacitance data of the touch strip to the controller.

3. The range hood according to claim 1, characterized in that, The touch strip is also configured to generate a capacitance change greater than or equal to a first proportional threshold when the contact of the contact object reaches a preset contact condition. The first proportional threshold is the ratio between the first preset capacitance of the touch strip and the initial capacitance, and the first proportional threshold is 115% to 120%.

4. The range hood according to claim 1, characterized in that, The touch strip is further configured to generate a capacitance change less than a first proportional threshold and greater than or equal to a second proportional threshold in response to a contact condition where the contact of the contact object does not reach a preset contact condition. The first proportional threshold is the ratio between a first preset capacitance of the touch strip and the initial capacitance, and the first proportional threshold is 115% to 120%. The second proportional threshold is the ratio between a second preset capacitance of the touch strip and the initial capacitance, and the second proportional threshold is 75% to 80%.

5. The range hood according to claim 1, characterized in that, The touch strip is also configured to generate a capacitance change less than a second proportional threshold when a touch strip fault condition is met. The second proportional threshold is the ratio between the second preset capacitance of the touch strip and the initial capacitance, and the second proportional threshold is 75% to 80%.

6. The range hood according to claim 1, characterized in that, The touch strip is also configured to generate a capacitance change greater than or equal to a third proportional threshold when the contact state of the contact object reaches a critical state. The third proportional threshold is the ratio between the third preset capacitance of the touch strip and the initial capacitance, and the third proportional threshold is 135% to 140%.

7. The range hood according to any one of claims 1-6, characterized in that, The controller is configured to: when the capacitance data indicates that the touch strip produces a capacitance change greater than or equal to a first proportional threshold, adjust the output power of the drive device based on a preset correspondence to adjust the operating speed of the transmission component driving the smoke baffle to close; the preset correspondence is used to indicate the correspondence between multiple capacitance changes and multiple output powers.

8. The range hood according to any one of claims 1-6, characterized in that, The controller is configured to output fault information when the capacitance data indicates that the touch strip produces a capacitance change less than a second proportional threshold. The fault information is used to indicate that the touch strip is in a fault state.

9. The range hood according to any one of claims 1-6, characterized in that, The controller is further configured to: acquire the motion state of the transmission component, including an open state, a locked state, and a closed state; and, when the motion state of the transmission component is in the closed state, trigger the output power adjustment of the drive device in response to the capacitance change of the touch strip, so as to adjust the operating speed of the transmission component driving the smoke baffle to close.

10. A control method for a range hood, the range hood comprising a smoke baffle, a touch strip, a transmission component, and a drive device, wherein the touch strip is located below the smoke baffle, the drive device is drivenly connected to the transmission component, and the transmission component is tractively connected to the smoke baffle for driving the smoke baffle to open and close; the touch strip is configured to have an initial capacitance in a state without contact with an object, and to generate a capacitance change in response to contact with an object; characterized in that... The method includes: The capacitance data of the touch strip is acquired, and the output power of the drive device is adjusted in response to the capacitance change of the touch strip, so as to adjust the running speed of the transmission component driving the smoke baffle to close.

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