A control method for a range hood baffle

Abstract

The present invention provides a control method for a range hood baffle, by setting a standard current AD value of a range hood baffle driving motor in normal operation as a threshold value Q, and comparing it with the AD value P of the working current of the baffle driving motor collected in real time. The two working conditions of the range hood baffle driving motor in normal operation and failure are obtained by comparison, and steps for starting the control panel under the two working conditions are designed respectively. The present invention can solve the problem of baffle failure caused by aging of the baffle driving motor or improper human operation, which in turn causes the machine to stop working. In the case of a damaged baffle, the user can manually open or remove the baffle without affecting the normal use of the range hood, thereby extending the overall service life of the range hood. The present invention realizes the automatic detection function of the baffle failure by setting a flag event, and can remind the user to perform relevant maintenance on the baffle. The present invention is suitable for range hoods with automatic opening and closing functions of the baffle.

Description

Technical Field

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

[0002] Range hoods are divided into two types: those without baffles and those with baffles. Range hoods without baffles have larger smoke collection channels and direct smoke extraction effects. However, their oil filter grilles are exposed to the kitchen environment for a long time. In addition to accumulating oil stains, they are also easily attached to dust in the kitchen environment, which increases the cleaning work. In addition, when cooking, users are directly facing the oil filter grilles with oil stains attached, which greatly affects the appearance. Therefore, the current mainstream range hoods tend to set baffles outside the oil filter grilles. When the range hood is working, the baffle is open. When the range hood is turned off, the baffle is closed. Range hoods with baffles have better smoke collection effects than those without baffles, and they are more beautiful.

[0003] In the process from power-on to opening the control panel, the range hood that can automatically open and close the baffle will first close the baffle. Then, when the range hood is turned on and the light is turned on, the baffle needs to be opened first, and after a delay of a few seconds, the corresponding power-on and wind speed adjustment gear will be turned on, and the fan will rotate. It can be seen that the control method of the range hood with a baffle is usually open-loop control. Although the open-loop control method is simple, each step of the range hood can be pre-set with a program, and then the controller can execute according to the preset program, but there are also obvious disadvantages. For example, for a range hood with a baffle, if the baffle does not work due to life or improper operation, the range hood will no longer be turned on and the fan will no longer rotate. For users, they hope that the range hood can still operate and be used when the baffle is broken, so as to maximize the utilization of the machine. Existing range hoods are basically equipped with baffles, and the failure rate of the baffles is low, so the control method of the range hood basically does not perform functional logic processing of baffle failures. For example Figure 1 As shown, once the baffle fails, the entire range hood is equivalent to being scrapped in advance. Therefore, in view of the shortcomings of the prior art, the present invention provides a control method for the baffle of a range hood to overcome the shortcomings of the prior art. Summary of the invention

[0004] The purpose of the present invention is to avoid the shortcomings of the prior art and provide a control method for a range hood baffle. The control method can solve the problem that the baffle malfunctions due to aging of the baffle drive motor or improper human operation, which in turn causes the machine to stop working. The method has simple control steps and also has a fault self-checking function, which can remind the user to perform relevant maintenance on the baffle.

[0005] The above-mentioned purpose of the present invention is achieved through the following technical measures.

[0006] The present invention provides a control method for a range hood baffle, which is performed through the following steps:

[0007] S1, execute the command to open the range hood baffle, perform real-time AD sampling on the current value of the range hood baffle driving motor, record the real-time AD value as P, P is a non-negative number; pre-mark the event of the range hood baffle driving motor failure as flag=true, and pre-mark the event of the range hood baffle driving motor normal operation as flag=false.

[0008] S2, compare the real-time AD value P with the threshold Q to determine whether P is less than Q, where Q is a non-negative number;

[0009] If yes, it is determined that the range hood baffle drive motor is faulty and the process goes to S3;

[0010] Otherwise, it is determined that the range hood baffle driving motor operates normally and the process goes to S4.

[0011] S3, delay for △T time, and set flag=false when △T time ends, and enter S4.

[0012] S4, start the range hood control panel.

[0013] Furthermore, the flag mark is detected at any time in the steps S1 to S4, and whether to report the failure of the range hood baffle drive motor to the user is determined according to the type of the detected flag mark.

[0014] Furthermore, only when the flag=true mark is detected, the event that the range hood baffle driving motor fails is reported to the user.

[0015] Specifically, the range hood controller detects a flag mark, and reports to the user the event that the range hood baffle driving motor fails.

[0016] Specifically, in step S1, the range hood controller performs real-time AD sampling on the current value of the baffle driving motor.

[0017] Specifically, in step S1, the event that the range hood baffle driving motor fails is pre-marked in the range hood controller as flag=true, and the event that the range hood baffle driving motor operates normally is pre-marked as flag=false.

[0018] Specifically, in step S2, the range hood controller compares the real-time AD value P with the threshold Q.

[0019] Specifically, in step S2, the comparison result of P﹤Q corresponds to flag=true, and the comparison result of P≧Q corresponds to flag=false.

[0020] Specifically, in step S3, within the ΔT time, the range hood controller locks the button functions of the control panel.

[0021] Preferably, in step S3, the ΔT time is 10 to 20 seconds.

[0022] The present invention provides a control method for a range hood baffle, which sets a standard current AD value of a range hood baffle driving motor in normal operation as a threshold value Q, and compares it with the AD value P of the working current of the baffle driving motor collected in real time. The comparison results in two working conditions of the range hood baffle driving motor in normal operation and failure, and respectively designs a control flow for starting the control panel under the two working conditions. When the baffle driving motor is operating normally, the control panel is directly started after the baffle is opened, and the buttons of the control panel are controllable. When the baffle driving motor fails and does not operate, the control panel is first locked and delayed for a period of time, and then started again. The control method of the present invention can bypass the necessary steps of opening the baffle of the range hood. In the case of damage to the baffle, the user can manually open the baffle or remove the baffle, which does not affect the normal use of the range hood, thereby extending the service life of the range hood as a whole, and saving the user the cost of repairing and purchasing a new machine. The range hood baffle control method of the present invention can also reduce the scrap rate of the machine, maximize the utilization rate of the machine, reduce the generation of solid waste, and thus protect the environment.

[0023] The control method of the range hood baffle of the present invention marks the event of the baffle drive motor failure as flag=true, and marks the event of the baffle drive motor operating normally as flag=false. By detecting the flag mark event, the working condition of the range hood baffle drive motor can be obtained. Only when the mark flag=true is detected, the range hood prompts the user that the baffle is damaged, and the user can manually open the baffle or remove the baffle as needed. The control method of the range hood baffle of the present invention realizes the automatic detection function of the baffle failure by setting the flag mark event. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described with reference to the accompanying drawings, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0025] Figure 1 The present invention is a flow chart of a control method of a range hood baffle in the prior art.

[0026] Figure 2 The present invention is a flow chart of a method for controlling a range hood baffle.

[0027] Figure 3 This is a flow chart of the normal working condition of the range hood baffle in Example 2.

[0028] Figure 4It is a flow chart of the range hood baffle fault condition in Example 2. DETAILED DESCRIPTION

[0029] The present invention will be further described with reference to the following examples.

[0030] Example 1.

[0031] A control method for a range hood baffle, such as Figure 2 As shown, proceed as follows:

[0032] S1, the range hood controller executes the range hood baffle opening instruction, performs real-time AD sampling on the current value of the range hood baffle driving motor, and records the real-time AD value as P, where P is a non-negative number. The range hood controller pre-marks the event that the range hood baffle driving motor fails as flag = true, and pre-marks the event that the range hood baffle driving motor operates normally as flag = false.

[0033] AD sampling of the current value in the circuit can be achieved by selecting a controller with an AD conversion module. Those skilled in the art can select a suitable controller chip according to actual conditions, which will not be described in detail here.

[0034] S2, the range hood controller compares the real-time AD value P with the threshold value Q to determine whether P is less than Q, where Q is a non-negative number; if so, it is determined that the range hood baffle drive motor is faulty and the process goes to S3; otherwise, it is determined that the range hood baffle drive motor is operating normally and the process goes to S4. In this step, the comparison result of P﹤Q corresponds to the flag=true mark, and the comparison result of P≧Q corresponds to the flag=false mark.

[0035] The following are the fault conditions of the baffle drive motor: (1) being stuck by condensed oil; (2) the drive motor itself fails; (3) the telescopic rod connecting the baffle fails; (4) the control circuit fails. When the baffle drive motor fails, its fault current cannot reach the AD value corresponding to the standard current, so as to detect the working condition of the baffle drive motor. The AD value corresponding to the standard current can be set as the threshold value Q. When P﹤Q is detected, it can be judged that the baffle drive motor has failed. When P≧Q is detected, it is judged that the baffle drive motor is operating normally.

[0036] S3, delay for △T time, and set flag=false after △T time, and enter S4.

[0037] During the delay △T time, the range hood controller locks the key functions of the control panel. Clicking the key at this time will not generate any control instructions. The △T time is set to 10 to 20 seconds. The lock time of the range hood control panel must be long enough to distinguish it from the ordinary range hood fan start delay, and be fed back to the range hood controller as a landmark event. In addition, the lock time of the range hood control panel should not be too long. If the time is too long, the user will have to wait for a long time to start the machine, which will affect the user experience.

[0038] In this step, when the △T time is over, set flag=false as the instruction for delay end. When the range hood controller detects flag=false after delaying for 10 to 20 seconds, the control panel locking state will be ended.

[0039] S4, start the range hood control panel.

[0040] The range hood baffle control method of this embodiment is applicable to range hoods with automatic opening and closing functions of the baffle. The present invention provides a range hood baffle control method, which sets the standard current AD value of the range hood baffle driving motor in normal operation as a threshold value Q, and compares it with the AD value P of the working current of the baffle driving motor collected in real time. The comparison results in two working conditions of the range hood baffle driving motor in normal operation and failure, and respectively designs the control flow of starting the control panel under the two working conditions. When the baffle driving motor is operating normally, after opening the baffle, the control panel is directly started, and the buttons of the control panel are controllable. When the baffle driving motor fails and does not operate, the control panel is first locked and delayed for a period of time, and then started. The control method of the present invention can bypass the necessary steps of opening the baffle of the range hood. In the case of damage to the baffle, the user can manually open the baffle or remove the baffle, which does not affect the normal use of the range hood, thereby extending the service life of the range hood as a whole, and saving the user the cost of repairing and purchasing a new machine. The range hood baffle control method of the present invention can also reduce the scrap rate of the machine, maximize the utilization rate of the machine, reduce the generation of solid waste, and thus protect the environment.

[0041] In the range hood baffle control method of the present embodiment, a flag event is applied to control the startup process of the range hood. First, the event of the range hood baffle drive motor failure is pre-marked in the range hood controller as flag=true, corresponding to the comparison result of P﹤Q detected by the range hood controller. When the range hood controller detects the flag=true mark, the range hood controller issues a lock command to the control panel and enters step S3. In addition, the event of the range hood baffle drive motor normal operation is pre-marked in the range hood controller as flag=false, corresponding to the comparison result of P≧Q detected by the range hood controller. When the range hood controller detects the flag=false mark, it enters step S4.

[0042] Then, in step S3, after the △T time is over, the flag=false mark is set. In the prior art, the general control procedure is to perform the input operation of the control panel only after the range hood damper is normally opened. According to the above content, it can be known that the normal operation of the range hood damper drive motor is marked as flag=false. Therefore, it is necessary to set the flag=false mark after the delay in step S3 is over to give an instruction to the range hood controller so that the range hood controller believes that the damper is operating normally, thereby starting the control panel.

[0043] The control method of the present invention utilizes the flag marking event to guide the range hood controller to execute different control paths from the starting link to reach the end link. The startup process of the range hood can proceed smoothly no matter what situation is encountered. In addition, the flag=true mark of the range hood baffle drive motor failure event can be used as a way of self-checking the range hood baffle failure. During the startup process of the range hood, if the controller detects at least one flag=true mark, it can send a baffle failure alarm to the user in combination with sound or signal light, prompting the user to manually open and close the baffle immediately, and to perform subsequent operations such as repairing or disassembling the baffle.

[0044] Example 2.

[0045] A control method for a range hood baffle, the steps of which are the same as those of Example 1. This embodiment uses a motor of model 5525 as the driving motor of the baffle. The AD value of the standard working current corresponding to the driving motor of this model is 5, so in step S2, the threshold Q is set to 5. The driving motors available for household appliances include motors of model 7730 or model 8840, etc. Those skilled in the art can select a suitable motor according to actual conditions, which will not be described one by one here. In step S3 of this embodiment, the △T time is set to 20 seconds.

[0046] When the range hood baffle is normal and has no faults, press Figure 3 The steps for connecting with solid lines are as follows:

[0047] S1, the range hood controller executes the range hood baffle opening instruction, the range hood controller performs real-time AD sampling on the current value of the range hood baffle driving motor, and records the real-time AD value P=5.

[0048] S2, the range hood controller compares the real-time AD value P with the threshold value Q (Q=5), and the comparison result is P≧Q, that is, the range hood baffle drive motor operates normally. At this time, the range hood controller detects the flag=false mark, and the control process enters S4.

[0049] S4, start the range hood control panel.

[0050] The range hood baffle control method of this embodiment can solve the problem of baffle failure caused by aging of the baffle drive motor or improper human operation, which then causes the machine to stop working. The method has simple control steps and also has a fault self-checking function, which can remind the user to perform relevant maintenance on the baffle.

[0051] Example 3.

[0052] A control method for a range hood baffle, the steps of which are the same as those of Example 1. This embodiment uses a motor of model 5525 as the driving motor of the baffle. The AD value of the standard working current corresponding to the driving motor of this model is 5, so in step S2, the threshold Q is set to 5. The driving motors available for household appliances include motors of model 7730 or model 8840, etc. Those skilled in the art can select a suitable motor according to actual conditions, which will not be described one by one here. In step S3 of this embodiment, the △T time is set to 20 seconds.

[0053] When the range hood baffle fails, press Figure 4 The steps for connecting with solid lines are as follows:

[0054] S1, the range hood controller executes the range hood baffle opening instruction, the range hood controller performs real-time AD sampling on the current value of the range hood baffle driving motor, and records the real-time AD value P=1.

[0055] S2, the range hood controller compares the real-time AD value P with the threshold value Q (Q = 5), and the comparison result is P < Q, that is, the range hood baffle drive motor fails. The range hood controller detects the flag = true mark, and the control flow enters S3.

[0056] S3, the range hood controller delays for 20 seconds, during which the case function of the control panel is locked. After 20 seconds, the range hood controller detects that flag=false, and the control flow enters S4.

[0057] S4, start the range hood control panel.

[0058] The range hood baffle control method of this embodiment is applicable to range hood models with glass baffles or stainless steel baffles. The method can be applied to side-suction and top-suction range hood application scenarios. The range hood baffle control method of this embodiment can solve the problem of baffle failure caused by aging of the baffle drive motor or improper human operation, which in turn causes the machine to stop working. The method has simple control steps and also has a fault self-checking function, which can remind the user to perform relevant maintenance on the baffle.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A control method for a range hood baffle, characterized in that: Proceed as follows: S1, execute the command to open the range hood baffle, perform real-time AD sampling on the current value of the range hood baffle driving motor, and record the real-time AD value as P, where P is a non-negative number; The event of pre-marking the range hood baffle drive motor failure is flag = true, and the event of pre-marking the range hood baffle drive motor normal operation is flag = false; S2, compare the real-time AD value P with the threshold value Q to determine whether P is less than Q, the AD value corresponding to the standard current is the threshold value Q, and Q is a non-negative number; If yes, it is determined that the range hood baffle drive motor is faulty and the process goes to S3; Otherwise, it is determined that the range hood baffle driving motor operates normally and the process goes to S4; S3, delay △T time, and set flag = false when △T time ends, enter S4, △T time is 10 to 20 seconds; S4, start the range hood control panel.

2. The control method of the range hood baffle according to claim 1, characterized in that: The flag mark is detected at any time in the steps S1 to S4, and whether to report the failure of the range hood baffle drive motor to the user is determined according to the type of the detected flag mark.

3. The control method of the range hood baffle according to claim 2, characterized in that: Only when the flag=true mark is detected, the event of the range hood baffle driving motor failure is reported to the user.

4. The control method of the range hood baffle according to claim 3, characterized in that: The range hood controller detects the flag=true mark, and reports to the user the event that the range hood baffle driving motor fails.

5. The control method of the range hood baffle according to any one of claims 1 to 4, characterized in that: In step S1, the range hood controller performs real-time AD sampling on the current value of the baffle driving motor.

6. The control method of the range hood baffle according to claim 5, characterized in that: In step S1 , the event that the range hood baffle driving motor fails is pre-marked as flag=true in the range hood controller, and the event that the range hood baffle driving motor operates normally is pre-marked as flag=false.

7. The control method of the range hood baffle according to any one of claims 1 to 4, characterized in that: In step S2, the range hood controller compares the real-time AD value P with the threshold Q.

8. The control method of the range hood baffle according to claim 7, characterized in that: In step S2, the comparison result of P﹤Q corresponds to flag=true, and the comparison result of P≧Q corresponds to flag=false.

9. The control method of a range hood baffle according to any one of claims 1 to 4, characterized in that: In step S3, within the ΔT time, the range hood controller locks the button functions of the control panel.

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